CN112087621B - Lens detection apparatus and method - Google Patents

Abstract

The application provides a lens detection device and a lens detection method. The lens detection apparatus includes: the test bench comprises a plurality of hollowed-out machine positions for accommodating a plurality of lenses; a target positioned above the test station to provide a test image; and a photosensitive assembly part located below the test table and including: the photosensitive assemblies correspond to the hollow machine positions one by one respectively and collect the test image through the lens contained in the corresponding hollow machine position; and the height adjuster bears the photosensitive assemblies and drives the photosensitive assemblies to move along the vertical direction.

Description

Lens detection apparatus and method

Technical Field

The present application relates to the field of measurement and testing, and in particular, to a lens inspection apparatus and method.

Background

The lens produced by the lens manufacturer is generally subjected to an internal detection process before being put on the market to ensure the quality of the released product. For lens manufacturers, the efficiency of lens detection will directly affect the production efficiency of products. Therefore, there is an urgent need for a lens inspection apparatus capable of improving the lens inspection efficiency.

Disclosure of Invention

An aspect of the present application provides a lens detecting apparatus. The lens detection apparatus includes: the test bench comprises a plurality of hollowed-out machine positions for accommodating a plurality of lenses; a target positioned above the test station to provide a test image; and a photosensitive assembly part located below the test table and including: the photosensitive assemblies correspond to the hollow machine positions one by one respectively and collect the test image through the lens contained in the corresponding hollow machine position; and the height adjuster bears the photosensitive assemblies and drives the photosensitive assemblies to move along the vertical direction.

According to an embodiment of the present application, the height adjuster includes a plurality of discrete height adjusters that respectively carry the plurality of photosensitive assemblies and respectively independently drive the plurality of photosensitive assemblies to move in a vertical direction.

According to an embodiment of the present application, the photosensitive assembly portion further includes a plurality of Z-axis rotary drivers respectively provided on the plurality of discrete height adjusters and driving the photosensitive assembly to rotate about a vertical axis.

According to an embodiment of the present application, the photosensitive member section further includes XY-axis rotary drivers provided on the plurality of discrete height adjusters, respectively, and driving the photosensitive members to rotate about two axes perpendicular to each other on a horizontal plane.

According to the embodiment of the application, the lens test jig further comprises a distance-increasing lens arranged between the target and the hollow machine positions.

According to an embodiment of the application, the test bench comprises a first test bench and a second test bench arranged at intervals along a first direction on a horizontal plane.

According to an embodiment of the present application, the lens detecting apparatus further includes: a slide rail extending from below the first test station to below the second test station along the first direction; a photosensitive assembly carrying tray carrying the photosensitive assembly portion and slidably mounted on the slide rail to move between below the first test station and below the second test station; and a loading rack including a first loading rail adjacent to the first test station and a second loading rail adjacent to the second test station to load the lens through the adjacent loading rails at the other one of the first test station and the second test station, respectively, in a state where the photosensitive-component carrier tray is moved to the one of the first test station and the second test station.

According to an embodiment of the application, the loading ledge further comprises: the material taking rail extends along the first direction and is connected to a storage bin in which the lens is placed; and the carrier moves on the material taking rail along the first direction so as to take out the material tray filled with the plurality of lenses from the bin.

According to an embodiment of the present application, the carrier includes: a moving part in contact with the take-out rail to move on the take-out rail; the bearing part is connected to the moving part and is used for bearing the material tray; and the clamping part clamps or loosens the charging tray on the bearing part.

According to an embodiment of the application, the loading ledge comprises: a first transfer unit that moves in the second direction on the first loading rail, the first transfer unit picking up a lens taken out by the carrier from the carrier and transferring the picked lens to the first test stage; and a second transfer unit that moves in the second direction on the second loading rail, and that picks up a lens taken out by the carrier from the carrier and transfers the picked lens to the second test stage.

According to the embodiment of the application, the first transmission part and the second transmission part respectively comprise a camera for positioning the lens on the tray.

According to the embodiment of the application, the lens detection equipment further comprises a turntable, a part of the outer edge of the upper surface of the turntable is located between the target and the photosensitive component part, and the test bench comprises a first test bench and a second test bench which are arranged at intervals along the circumference of the turntable along the outer edge of the upper surface of the turntable.

According to this application embodiment, camera lens check out test set is still including loading the frame first testboard with one kind testboard in the second testboard is along with the rotation of carousel and with the target with under the state that sensitization subassembly portion aimed at in the vertical direction, the camera lens that a plurality of fretwork machine positions that a plurality of sensitization subassemblies penetrated the testboard of aiming at held gathers test image, and the loading frame first testboard with another kind of testboard in the second testboard loads the camera lens.

According to an embodiment of the application, the loading ledge comprises: the material taking rail extends along a first direction on a horizontal plane and is connected to a storage bin in which the lens is placed; a loading rail extending in a second direction perpendicular to the first direction and abutting another portion of an outer edge of an upper surface of a turntable, the loading rail being aligned with one of the first and second test stations in a state where the one of the first and second test stations is aligned in the vertical direction with the target plate and the photosensitive assembly portion as the turntable rotates.

According to an embodiment of the application, the loading bay comprises: a carrier that moves on the take-out rail in the first direction to take out a tray filled with the plurality of lenses from the magazine; and a transfer part moving on the loading rail in the second direction, the transfer part picking up a lens taken out by the carrier from the carrier and transferring the picked lens to the other test table aligned with the loading rail.

According to the embodiment of the application, the transmission part further comprises a camera for positioning the lens on the tray.

According to an embodiment of the present application, the carrier includes: a moving part in contact with the take-out rail to move on the take-out rail; the bearing part is connected to the moving part and is used for bearing the material tray; and the clamping part clamps or loosens the material tray on the bearing part.

Another aspect of the present application provides a lens detecting apparatus. The lens detection apparatus includes: the test device comprises a lens test frame, a first test board and a second test board, wherein the lens test frame comprises a first test board and a second test board which are arranged at intervals along a first direction on a horizontal plane, and the first test board and the second test board respectively comprise hollow machine positions for accommodating lenses; a target positioned above the lens test rig to provide a test image; the photosensitive assembly bearing disc is positioned below the lens testing frame, a height adjuster is arranged on the photosensitive assembly bearing disc, the height adjuster bears a photosensitive assembly and drives the photosensitive assembly to move in the vertical direction, the photosensitive assembly bearing disc moves between the first testing table and the second testing table along the first direction so as to be adjacent to the first testing table or the second testing table, and the photosensitive assembly collects a testing image provided by the target plate through a lens accommodated by the adjacent testing table; and a loading rack including a first loading rail adjacent to the first test station and a second loading rail adjacent to the second test station to load the lens through the adjacent loading rails at the other one of the first test station and the second test station, respectively, in a state where the photosensitive-component carrier tray is moved to the one of the first test station and the second test station.

According to an embodiment of the present application, the first loading rail extends in a second direction perpendicular to the first direction, and the lens is loaded by the first loading rail at the first test station in a state where the photosensitive assembly carrier tray is adjacent to the second test station; and the second loading rail extends in the second direction, and the lens is loaded by the second loading rail at the second test station in a state where the photosensitive assembly carrier tray is adjacent to the first test station.

According to an embodiment of the application, the loading ledge further comprises: the material taking rail extends along the first direction and is connected to a storage bin in which the lens is placed; and the carrier moves on the material taking rail along the first direction to take out the material tray filled with a plurality of lenses from the stock bin.

According to an embodiment of the present application, the carrier includes: a moving part in contact with the take-out rail to move on the take-out rail; the bearing part is connected to the moving part and is used for bearing the material tray; and the clamping part clamps or loosens the material tray on the bearing part.

According to an embodiment of the application, the loading ledge comprises: a first transfer unit that moves in the second direction on the first loading rail, the first transfer unit picking up a lens taken out by the carrier from the carrier and transferring the picked lens to the first test stage; and a second transfer unit that moves in the second direction on the second loading rail, and that picks up a lens taken out by the carrier from the carrier and transfers the picked lens to the second test stage.

According to the embodiment of the application, the first transmission part and the second transmission part respectively comprise a camera for positioning the lens on the tray.

According to this application embodiment, camera lens check out test set still including being located photosensitive assembly bears the below of dish and follows the slide rail that first direction extends, photosensitive assembly bears the dish and installs with sliding on the slide rail.

According to the embodiment of the application, the lens test jig further comprises a distance-increasing lens arranged between the target and the hollow machine positions.

Yet another aspect of the present application provides a lens detecting apparatus. The lens detection apparatus includes: a target having a test image; a height adjuster located below the target and carrying a photosensitive assembly, the height adjuster driving the photosensitive assembly to move in a vertical direction; the outer edge of the upper surface of the turntable is partially positioned between the target and the photosensitive component, and a first test platform and a second test platform which are spaced are arranged on the outer edge of the upper surface of the turntable and are used for accommodating lenses; a loading rack, the photosensitive assembly acquiring the test image through the lens in a state where one of the first test stand and the second test stand is aligned in a vertical direction with the target and the photosensitive assembly with rotation of the turntable, and the loading rack loading the lens at the other of the first test stand and the second test stand.

According to an embodiment of the application, the loading ledge comprises: the material taking rail extends along a first direction on a horizontal plane and is connected to a storage bin in which the lens is placed; a loading rail extending in a second direction perpendicular to the first direction and abutting another portion of an outer edge of an upper surface of a turntable, the loading rail being aligned with the other of the first and second test stations in a state where one of the first and second test stations is vertically aligned with the target and the photosensitive assembly with rotation of the turntable.

According to an embodiment of the application, the loading ledge comprises: the carrier moves on the material taking rail along the first direction to take out a tray filled with a plurality of lenses from the bin; a transfer part moving in the second direction on the loading rail, the transfer part picking up a lens taken out by the carrier from the carrier and transferring the picked lens to the other test table aligned with the loading rail.

According to the embodiment of the application, the transmission part comprises a camera for positioning the lens on the tray.

According to an embodiment of the present application, the carrier includes: a moving part in contact with the take-out rail to move on the take-out rail; the bearing part is connected to the moving part and is used for bearing the material tray; and the clamping part clamps or loosens the material tray on the bearing part.

According to the embodiment of the application, the lens detection equipment further comprises a distance-increasing lens arranged below the target.

According to the embodiment of the application, the lens detection equipment further comprises a photosensitive assembly bearing disc for bearing the photosensitive assembly, and the photosensitive assembly bearing disc moves in the first direction and the second direction.

Still another aspect of the present application provides a shot detection method. The lens detection method comprises the following steps: filling a plurality of lenses in a plurality of hollow machine positions on a test board; and the height adjuster below the test platform drives a plurality of photosensitive assemblies in one-to-one correspondence with the plurality of hollow machine positions to move in the vertical direction, so that the plurality of photosensitive assemblies penetrate through the plurality of lenses to collect test images provided by a target above the test platform.

According to an embodiment of the present application, driving the plurality of photosensitive assemblies to move in the vertical direction by the height adjuster includes: the plurality of photosensitive assemblies are independently driven to move in the vertical direction by a plurality of discrete height adjusters comprised by the height adjuster.

According to an embodiment of the present application, the shot detection method further includes: and driving the photosensitive assembly to rotate around a vertical axis through Z-axis rotary drivers respectively arranged on the plurality of discrete height adjusters.

According to an embodiment of the present application, the shot detection method further includes: the photosensitive assembly is driven to rotate around two axes perpendicular to each other on a horizontal plane by XY-axis rotary drivers respectively provided on the plurality of discrete height adjusters.

According to an embodiment of the present application, the shot detection method further includes: and driving the height adjuster to translate on a horizontal plane through a translation adjuster bearing the height adjuster so as to adjust the horizontal relative positions of the plurality of photosensitive assemblies and the plurality of lenses.

According to an embodiment of the present application, the shot detection method further includes: and distance increasing mirrors are provided between the target plate and the plurality of hollow machine positions.

According to an embodiment of the application, the test stations comprise a first test station and a second test station, and the filling further comprises: when the test images are acquired by the plurality of photosensitive assemblies through the plurality of lenses at the first test bench, filling another plurality of lenses at the second test bench; and when the second test bench utilizes the photosensitive assemblies to collect the test images through the lenses, filling the first test bench with another lenses.

According to an embodiment of the present application, the shot detection method further includes: the slide rail which drives the photosensitive assembly bearing disc bearing the height adjuster to extend along a first direction on a horizontal plane moves between the first test platform and the second test platform; loading an additional plurality of lenses at the second test station through a second loading rail adjacent the second test station while capturing the test image with the plurality of photosensitive assemblies at the first test station; and loading another plurality of lenses at the first test station through a first loading rail adjacent to the first test station while capturing the test image with the plurality of photosensitive assemblies at the second test station.

According to an embodiment of the present application, the shot detection method further includes: the turntable which is used for bearing the first test board and the second test board is driven to rotate at the outer edge of the upper surface; loading the plurality of lenses at one of the first and second test stations while the other of the first and second test stations is vertically aligned with the reticle and the plurality of photosensitive assemblies as the turntable rotates.

According to an embodiment of the application, the priming comprises: the driving carrier moves along a material taking rail extending in a first direction on a horizontal plane to take out the material tray filled with the plurality of lenses from the bin; and driving a transfer part to move along a loading rail extending in a second direction perpendicular to the first direction on a horizontal plane to pick up the plurality of lenses from the carrier and transfer the picked-up plurality of lenses to one of the first test stand and the second test stand.

According to the embodiment of the application, in the filling process, the plurality of lenses on the tray are positioned by using the camera installed on the conveying part.

The lens detection device and method improve lens detection efficiency.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is an overall schematic diagram showing a lens detection apparatus according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating a test image carried by a target according to an embodiment of the present application;

fig. 3 is a schematic view illustrating a vehicle according to an embodiment of the present application;

FIG. 4a is a schematic diagram illustrating an angle adjuster according to an embodiment of the present application;

FIG. 4b is a schematic view showing a photosensitive member portion according to an embodiment of the present application; and

fig. 5 is an overall schematic view showing another lens inspection apparatus according to an embodiment of the present application; and

fig. 6 is a flowchart illustrating a shot detection method according to an embodiment of the present application.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, expressions such as "upper", "lower", and the like are used only for describing relative positional relationships between respective features, and do not represent limitations on any absolute positions of the features. In addition, in this specification, ordinal numbers such as "first", "second", and the like are used only to distinguish different components, regardless of importance, order, and the like. For example, a first test station may also be referred to as a second test station, and vice versa.

In the drawings, the thickness, size, and relative distance of the respective components may be slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale. It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

The terms "substantially," "about," and the like as used herein are used as table-approximating terms and not table-wise terms, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In addition, the embodiments and the features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 is an overall schematic diagram illustrating a lens inspection apparatus according to an embodiment of the present application. Thelens inspection apparatus 100 includes a test stand. Twotest stations 111 and 112 are shown in fig. 1, but the number of test stations is not limited thereto. For example, thelens inspection apparatus 100 may include one test station, three test stations, or more test stations. The test table comprises a plurality of hollow machine positions 113 for accommodating a plurality of lenses. Thelens inspection apparatus 100 further includes atarget 140 positioned above the test stage to provide a test image and aphotosensitive assembly portion 130 positioned below the test stage. Thephotosensitive member portion 130 includes a plurality of photosensitive members and a height adjuster carrying the plurality of photosensitive members. The photosensitive assemblies are respectively in one-to-one correspondence with the hollow machine positions 113, and test images are collected through lenses contained in the corresponding hollow machine positions 113. The height adjuster carries a plurality of photosensitive assemblies and drives the photosensitive assemblies to move in the vertical direction.

According to the technical scheme provided by the application, a plurality of lenses can be simultaneously detected (namely, jointed board detection) in a single test flow, and the detection efficiency is improved.

In the actual production and test process, the lens and the hollow machine position often have manufacturing tolerance. In addition, there is tolerance in the process of placing the lens in the hollow machine position. When the lens is placed in the hollow machine position, the positions of the focuses of the plurality of lenses and the photosensitive elements on the same plane are slightly different due to the manufacturing tolerance of the lens and the hollow machine position and the tolerance generated by the placement of the lens. In this case, only a part of the lens may be detected when the height adjuster of the photosensitive member section performs the Z-axis direction movement.

The lens detection equipment provided by the embodiment of the application can provide different photosensitive assemblies and independently operated height regulators aiming at different lenses. In particular, the height adjuster may include a plurality of discrete height adjusters that respectively carry the plurality of photosensitive assemblies and respectively independently drive the plurality of photosensitive assemblies to move in the vertical direction. Therefore, even if the lens that different fretwork machine positions held has the tolerance in the vertical direction, do not influence the test to this lens yet. Therefore, the lens detection device provided by the application can detect a plurality of lenses simultaneously more accurately.

Thelens inspection apparatus 100 may further include alens test frame 110, a photosensitive-component carrier tray 120, and aloading frame 150. The lens test stand 110 includes afirst test stand 111 and a second test stand 112 arranged at intervals in a first direction X on a horizontal plane. The terms "first test station" and "second test station" as used in this application only indicate that the two test stations are located at different positions and are not meant to be limiting with respect to number. Although fig. 1 shows only two test stations for the sake of clarity, the number thereof is not limited thereto. The lens test stand 110 may include twofirst test stations 111 and twosecond test stations 112. Thefirst test station 111 and thesecond test station 112 include ahollow machine station 113 for accommodating lenses. In fig. 1, each test station includes, by way of example, four steady state positions 113. Thehollow machine position 113 has a vertically through structure so as to place the lens to be measured in the vertical direction. Although the present application shows that each test station includes foursteady state positions 113 for illustrative purposes, the number ofsteady state positions 113 is not limited thereto. For example, each test station may include eight or any other number of steady state positions.

The opticalsensor carrier tray 120 is located under thelens testing jig 110 and carries theoptical sensor portion 130. The photosensitivedevice carrier tray 120 moves between thefirst test station 111 and thesecond test station 112 along the first direction X. For example, a guide rail extending in the first direction X may be further provided below the photosensitive-assembly carrier tray 120. The photosensitiveassembly carrier tray 120 can slide along the guide rail to move between thefirst test station 111 and thesecond test station 112.

Thetarget 140 is positioned above thelens test rig 110 to provide a test image. Fig. 2 is a schematic diagram showing a test image carried by thetarget 140. Thetarget 140 employed in the present application may be a full field of view SFR target having test patterns thereon. The full-field SFR reticle is formed by a plurality of tilted first color patches and a plurality of tilted second color patches alternately having a color difference. As the slanted black and white squares shown in fig. 2. The inclination may be between 5 ° and 12 °. The four sides of each first color block are respectively connected with a second color block. In addition, each black square has a white Mark point (Mark point) in the middle for positioning. The full-field SFR standard is suitable for reducing the deviation of the field of view when a plurality of lenses are tested simultaneously. Thephotosensitive assembly portion 130 can collect a test image through the lens, and the collected test image is used as an analysis material of imaging definition.

At the same time, thefirst test station 111 and thesecond test station 112 may be used as a test station and a loading and unloading station, respectively. When a batch of lenses to be tested are detected at the test station, the tested lenses can be disassembled at the loading and unloading station, and the next batch of lenses to be tested can be loaded at the loading and unloading station. When the photosensitive-component carrier tray 120 moves to one of thefirst test station 111 and thesecond test station 112, theloading rack 150 loads lenses at the other of thefirst test station 111 and thesecond test station 112.

For example, when thephotosensitive device tray 120 moves to thefirst testing station 111, thephotosensitive device portion 130 carried by thephotosensitive device tray 120 can capture the testing image on thetarget 140 through the lens to be tested placed through thehollow position 113 on thefirst testing station 111. Thefirst test station 111 at this time may be used as a test station. At the same time, theloading rack 150 loads lenses at thesecond testing station 112. For example, after a batch of lenses that have been tested is removed from thesecond testing station 112, theloading rack 150 can load a next batch of lenses to be tested on thesecond testing station 112.

Then, when the lens inspection on thefirst test station 111 is finished, the photosensitivecomponent carrying tray 120 moves from thefirst test station 111 to thesecond test station 112. Thesecond test station 112 now serves as a test station and thefirst test station 111 serves as a loading/unloading station. Theloading rack 150 loads the lens at thefirst test stage 111. For example, after the tested lens is detached from thefirst testing platform 111, theloading rack 150 can load the next batch of lenses to be tested on thefirst testing platform 111.

According to the implementation mode provided by the application, the loading and the detection of the lens to be detected can be carried out in a partitioning mode simultaneously, so that the lens detection efficiency is improved.

According to the present application, theloading bay 150 may include afirst loading rail 151 and asecond loading rail 152. Thefirst loading rail 151 extends in a second direction Y perpendicular to the first direction X and is adjacent to thefirst test station 111, and when the photosensitive-component carrier tray 120 moves to thesecond test station 112, the lens is loaded at thefirst test station 111 by thefirst loading rail 151. Thesecond loading rail 152 extends in the second direction Y and is adjacent to thesecond test station 112, and the lens is loaded by thesecond loading rail 152 at thesecond test station 112 when the photosensitive-component carrier tray 120 moves to thefirst test station 111. The loading rails can be in one-to-one correspondence with the test tables to improve lens loading efficiency.

Theloading bay 150 may also include a take-off rail 160 and acarrier 180. The take-outrail 160 extends in the first direction X and is connected to amagazine 170 in which lenses are placed. Thecarrier 180 moves on the take-outrail 160 in the first direction X to take out the lens-loaded tray from themagazine 170.

Fig. 3 is a schematic view illustrating acarrier 180 according to an embodiment of the present application.

Thecarrier 180 may include a movingportion 181, a carryingportion 182, and a clampingportion 183. The movingportion 181 contacts the take-outrail 160 to move on the take-outrail 160. The carryingportion 182 is connected to the movingportion 181 and is used to carry atray 184 that is pre-filled with lenses. The clampingportion 183 can clamp or unclamp thetray 184 on the carryingportion 183. In the material taking process, thecarrier 180 is driven by the movingpart 181 to move toward thebin 170 and penetrate into thebin 170. Thecarrier 182 holds up a tray in themagazine 170, and then thegripper 183 is driven by, for example, an air cylinder to grip or release thetray 184 on thecarrier 182. Then, thecarrier 180 moves away from themagazine 170 under the driving of the movingportion 181 to pull out the tray.

Theloading bay 150 may include a first transfer section and a second transfer section. The first transfer unit moves on thefirst loading rail 151 in the second direction Y, picks up the lens taken out by thecarrier 180 from thecarrier 180 and transfers the picked lens to thefirst testing stage 111. For example, a suction nozzle may be disposed on the first transfer portion, and the suction nozzle may be connected to a suction pump and suck the lens by a suction force provided by suction of the suction pump. Further, a clip may be provided on the first transfer part to clip the lens by the clip. The second transfer unit moves on thesecond loading rail 152 in the second direction Y, picks up the lens taken out by thecarrier 180 from thecarrier 180 and transfers the picked lens to thesecond testing stage 112. The first and second transport portions may further include a camera to position the lenses on the tray in the above process.

Thelens testing jig 110 further includes a distance-increasing mirror disposed between the target and the hollow machine. In some application scenarios, testing the sharpness of a lens requires simulating a situation where the object distance is infinite. In this case, the target cannot be mounted virtually at infinity from the lens to be measured. In addition, even if the object distance is not infinite, the object distance sometimes exceeds the distance between the lens and the target that can be actually provided. Therefore, the problem can be solved by arranging the distance-increasing mirror between the target plate and the hollow machine position. The use of the range extender can significantly reduce the volume of the lens testing apparatus. It should be noted that the arrangement of the plurality of distance-increasing mirrors needs to correspond to the plurality of lenses on the hollow machine position. The distance-increasing lens can be fixed on the lens testing equipment and can also be adjusted.

Thelens test apparatus 100 may further include a light source (not shown) to enhance the brightness of the target to better project the test image on the target onto thephotosensitive assembly portion 130. Where thetarget 140 is a transmissive target, the light source may be disposed above thetarget 140. Where thetarget 140 is a reflective target, the light source may be disposed below thetarget 140.

As described above, each of thefirst test station 111 and thesecond test station 112 may include a plurality ofhollow machine stations 113. This configuration of panel testing allows multiple lenses to be tested simultaneously. At this time, thephotosensitive element portion 130 may include a plurality of photosensitive elements matched with the plurality of hollow machine positions 113.

The photosensitive member portion includes a plurality of angle adjusters which adjust angles of the plurality of photosensitive members, respectively. The photosensitive member portion may include a photosensitive member for sensing light. The height adjuster of thephotosensitive assembly portion 130 may drive the photosensitive assembly to move up and down in the vertical direction Z. Specifically, the photosensitive assembly can move from far to near or from near to far relative to the lens to be measured under the drive of the height adjuster, so that an image acquired by the photosensitive assembly is changed into a clear image from a fuzzy image and then changed into a fuzzy image from a clear image. The image acquired by the photosensitive assembly can be provided for a data processor of the lens detection equipment to be analyzed so as to obtain a solution force defocusing curve, and therefore the quality of the lens is judged. This process may be performed multiple times per pass of a batch of shots to reduce false detection rates. And dividing the detected lens into a qualified product and an unqualified product. Alternatively, the quality of the shot is classified into more levels, for example, three, good, bad. And (4) sorting and blanking the detected lens.

Fig. 4a is a schematic diagram illustrating anangle adjuster 400 according to an embodiment of the present application. Theangle adjuster 400 may include an XYaxis rotation driver 410 and a Zaxis rotation driver 420. The XY-axis rotation driver 410 can drive the photosensitive-member mounting portion 430 for fixing the photosensitive member to rotate about the first direction X and the second direction Y. The Z-axis rotation driver 420 may drive the photosensitive-assembly mounting portion 430 to rotate about the vertical direction Z. Theangle adjuster 400 can adjust the inclination (Tilt) of the photosensitive element relative to the lens, and reduce the influence on the imaging quality caused by the inclination between the photosensitive element and the lens to be measured. Influence caused by inclination between the photosensitive assembly and the lens to be detected is eliminated or reduced through a physical structure, and the calculation burden of subsequent image analysis processing can be reduced, so that the lens detection efficiency is improved.

As described above, the angle adjuster is respectively provided for each hollow machine position (or each lens to be detected), so that different lenses can be independently detected in one lens detection process. The scheme of a plurality of angle adjusters provided by the embodiment of the application can solve or at least alleviate the problem, thereby improving the lens detection efficiency. Fig. 4b is a schematic diagram showing that the photosensitive member portion includes four angle adjusters which respectively adjust angles of the plurality of photosensitive members and four height adjusters which respectively adjust heights of the plurality of photosensitive members.

In addition, atranslation adjuster 440 may be further disposed below the angle adjuster and the height adjuster to finely adjust the positions of the photosensitive assemblies in the first direction X and the second direction Y, so as to reduce the influence of horizontal alignment errors between the photosensitive assemblies and the lens on the imaging quality.

Fig. 5 is an overall schematic diagram illustrating another lens inspection apparatus according to an embodiment of the present application.

Thelens inspection apparatus 500 shown in fig. 5 includes atarget 510, aturntable 520, aloading bay 530, and a height adjuster. Thetarget 510 has a test image. The height adjuster is located below the target and has a height lower than theturntable 520. The height adjuster is not shown in fig. 5, since it is shielded by the turntable. The height adjuster carries the photosensitive assembly and drives the photosensitive assembly to move in the vertical direction.

A portion of the outer edge of the upper surface of theturntable 520 is located between thetarget 510 and the photosensitive member. A first 521 and a second 522 spaced apart test station are provided at the outer edge of the upper surface of the turntable. Thefirst test station 521 and thesecond test station 522 are used to accommodate lenses. Although the first and second test stages 521 and 522 are illustrated in fig. 5 to be spaced apart by 180 °, the spaced-apart angle between the first and second test stages 521 and 522 is not limited thereto. In addition, although only onefirst test station 521 and onesecond test station 522 are illustrated in fig. 5, the number of thefirst test stations 521 and thesecond test stations 522 is not limited thereto. For example, two pairs of the first andsecond test stations 521 and 522 may be provided at intervals of 90 °.

In the position shown in FIG. 5, the photosensitive component is located directly below thefirst test station 521. When one of the first andsecond test stations 521 and 522 is aligned in the vertical direction with thereticle 510 and the photosensitive member as the turntable rotates, the photosensitive member captures a test image through the lens, and theloading bay 530 loads the lens at the other of the first andsecond test stations 521 and 522.

As shown in FIG. 5, at this time, thefirst test station 521 is positioned between and aligned with thereticle 510 and the photosensitive assembly. Thefirst test station 521 at this time can be used as a test station. At the same time, theloading rack 530 loads lenses at thesecond testing station 522. For example, after a batch of lenses that have been tested is removed from thesecond testing station 522, theloading rack 530 may load a next batch of lenses to be tested on thesecond testing station 522.

Then, when the lens inspection on thefirst test station 521 is finished, the turntable is rotated to rotate the second test station to between and align thetarget 510 and the photosensitive member. Thesecond test station 522 at this time serves as a test station, and thefirst test station 521 serves as a loading/unloading station. Theloading rack 530 loads lenses at thefirst test station 521. For example, after the tested lens is detached from thefirst testing station 521, theloading rack 530 can load the next batch of lenses to be tested on thefirst testing station 521.

Theloading rack 530 may include a take-off rail 540 and aloading rail 550. Thematerial taking rail 540 extends along the first direction X on the horizontal plane and is connected to a bin in which lenses are placed. Theloading rail 550 extends in a second direction Y perpendicular to the first direction X and is adjacent to another portion of the outer edge of the upper surface of the turntable. When one of the first andsecond test stations 521 and 522 is aligned in a vertical direction with thetarget 510 and the photosensitive assembly as the turntable rotates, theloading rail 550 is aligned with the other of the first andsecond test stations 521 and 522. As shown in FIG. 5, at this time, thefirst test station 521 is aligned with thereticle 510 and the photosensitive assembly in the vertical direction, and theloading rail 550 is aligned with thesecond test station 522.

Although two loading rails are shown in fig. 5, the number of loading rails is not limited thereto. For example, only one loading rail may be provided, or three or more loading rails may be provided. Each filling rail can have the functions of feeding and discharging at the same time. Alternatively, as shown in fig. 5, one filling rail may be provided only for feeding and the other filling rail may be provided only for blanking.

Theloading rack 530 may include a carrier and a transfer portion. The carrier moves on the take-outrail 540 in the first direction X to take out the lens-loaded tray from the magazine. The transfer part moves on theloading rail 550 in the second direction Y, picks up the lens taken out by the carrier from the carrier and transfers the picked lens to another test station aligned with theloading rail 550. The transport part may also include a camera for positioning the lenses on the tray during the above process.

The carrier may include a moving portion, a carrying portion, and a gripping portion. The moving part contacts the take-outrail 540 to move on the take-outrail 540. The bearing part is connected to the moving part and is used for bearing a material tray which is filled with lenses in advance. The clamping part clamps or loosens the tray on the bearing part. The specific structure of the carrier may be substantially the same as the carrier described above with reference to fig. 3, and therefore, will not be described in detail herein.

Thelens inspection apparatus 500 may further include arange mirror 560 disposed below thetarget 510. Thefirst testing station 521 and thesecond testing station 522 may each include a plurality of hollow machine positions, and the photosensitive assembly may include a plurality of photosensitive assemblies matched with the plurality of hollow machine positions. Thelens sensing apparatus 500 may include a plurality of angle adjusters respectively adjusting angles of the plurality of photosensitive members and a plurality of discrete height adjusters respectively adjusting heights of the plurality of photosensitive members. Thelens inspection apparatus 500 may further include a photosensitive assembly carrying tray carrying the photosensitive assembly portion, the photosensitive assembly carrying tray moving in the first direction X and the second direction Y.

Theshot detection method 600 provided by the present application is described below with reference to fig. 6. Theshot detection method 600 includes the following operations.

In step S610, a plurality of lenses are loaded in a plurality of hollow positions on the test table.

In step S620, a plurality of photosensitive assemblies corresponding to the plurality of hollow machine positions one to one are driven to move in a vertical direction by a height adjuster disposed below the test table, so that the plurality of photosensitive assemblies acquire a test image provided by a target plate disposed above the test table through the plurality of lenses.

According to an embodiment of the present application, driving the plurality of photosensitive assemblies to move in the vertical direction by the height adjuster includes: the plurality of photosensitive assemblies are independently driven to move in the vertical direction by a plurality of discrete height adjusters (shown in fig. 4 b) included in the height adjuster, respectively.

According to an embodiment of the present application, the shot detection method further includes: the photosensitive assembly is driven to rotate about a vertical axis by a Z-axis rotation driver (such as Z-axis rotation driver 420 shown in fig. 4 a) respectively provided on the plurality of discrete height adjusters.

According to an embodiment of the present application, the shot detection method further includes: the photosensitive assembly is driven to rotate about two axes perpendicular to each other on a horizontal plane by XY-axis rotation drivers (XY-axis rotation drivers 410 shown in fig. 4 a) respectively provided on the plurality of discrete height adjusters.

According to an embodiment of the present application, the shot detection method further includes: and driving the height adjuster to translate on a horizontal plane through a translation adjuster bearing the height adjuster so as to adjust the horizontal relative positions of the photosensitive assemblies and the lenses.

According to an embodiment of the present application, the shot detection method further includes: a distance-increasing mirror (such as the distance-increasingmirror 560 shown in fig. 5) is provided between the target and the plurality of hollowed-out machine positions.

According to an embodiment of the present application, the test stations comprise a first test station (such asfirst test station 111 shown in fig. 1 orfirst test station 521 shown in fig. 5) and a second test station (such assecond test station 112 shown in fig. 1 orsecond test station 522 shown in fig. 5), and the loading further comprises: when the test images are acquired by the plurality of photosensitive assemblies through the plurality of lenses at the first test bench, filling another plurality of lenses at the second test bench; and when the second test bench utilizes the photosensitive assemblies to collect the test images through the lenses, filling the first test bench with another lenses.

According to an embodiment of the present application, the shot detection method further includes: driving a photosensitive assembly carrying tray (such as photosensitiveassembly carrying tray 120 shown in fig. 1) carrying the height adjuster to move between the first test station and the second test station along a slide rail extending in a first direction on a horizontal plane; loading an additional plurality of lenses at the second test station through a second loading rail adjacent the second test station while capturing the test image with the plurality of photosensitive assemblies at the first test station; and loading another plurality of lenses at the first test station through a first loading rail adjacent to the first test station while capturing the test image with the plurality of photosensitive assemblies at the second test station.

According to an embodiment of the present application, the shot detection method further includes: driving a turntable (such as theturntable 520 shown in fig. 5) carrying the first test bench and the second test bench to rotate at the periphery of the upper surface; loading the plurality of lenses at one of the first and second test stations while the other of the first and second test stations is vertically aligned with the reticle and the plurality of photosensitive assemblies as the turntable rotates.

According to an embodiment of the application, the priming comprises: the driving carrier moves along a material taking rail extending in a first direction on a horizontal plane to take out the material tray filled with the plurality of lenses from the bin; and driving a transfer part to move along a loading rail extending in a second direction perpendicular to the first direction on a horizontal plane to pick up the plurality of lenses from the carrier and transfer the picked-up plurality of lenses to one of the first test stand and the second test stand.

According to the embodiment of the application, in the filling process, a plurality of lenses on the material tray are positioned by using the camera arranged on the transmission part.

The lens inspection apparatus and method provided in the above embodiments of the present application can be used to inspect conventional lenses, modules with lenses, and multi-group lenses as described below. The lens is divided into a plurality of lens components by the multi-group lens, then imaging is carried out through the photosensitive chip receiving module, imaging quality is judged, and the relative relation among the lens components is adjusted in an active calibration mode so as to enable the imaging quality to meet requirements. Then, the lens components are fixed by an adhesive to complete the assembly of the multiple groups of lenses. Although this assembly method can reduce the assembly difficulty of high-parameter and high-quality lenses and improve the yield of lens assembly, the lens components are bonded by an adhesive, which usually needs to be baked at high temperature to be completely cured. In the baking process, the adhesive can be changed, so that the imaging quality of the lens is changed, and part of the lens is changed into inferior products. Because the lens components of the multi-group lens have forming errors and assembling errors and the adjustment range of each lens component is different, even if the multi-group lens produced in the same batch has larger difference in imaging quality. The camera lens detection equipment that embodiment provided above this application also is applicable to and detects many groups of camera lenses to get rid of the bad camera lens that exists in the camera lens that batch production came out, and can further carry out quality classification to the qualified camera lens of producing, guarantee the uniformity of product. The target of embodiments of the present application may employ an SFR target to conform to the target used during active calibration of the multi-cluster lens. This may ensure consistency in multi-group lens assembly and inspection. The image data that photosensitive assembly passes through the test image acquisition of camera lens shooting target in this application can be used to the imaging quality of the imaging system that the camera lens that the evaluation is tested and corresponding photosensitive assembly constitute. By using the photosensitive assembly with higher precision and smaller error, the imaging quality of the tested lens can be further determined through the imaging quality of an imaging system consisting of the tested lens and the corresponding photosensitive assembly.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (27)

1. A lens inspection apparatus, characterized in that the lens inspection apparatus comprises:

the test bench comprises a plurality of hollowed-out machine positions for accommodating a plurality of lenses;

a target positioned above the test station to provide a test image; and

a photosensitive assembly portion located below the test table and including:

the photosensitive assemblies correspond to the hollow machine positions one by one respectively and collect the test image through the lens contained in the corresponding hollow machine position; and

the height adjuster is used for bearing the photosensitive assemblies and driving the photosensitive assemblies to move along the vertical direction;

the height adjuster comprises a plurality of discrete height adjusters, and the discrete height adjusters are used for respectively bearing the photosensitive assemblies and respectively and independently driving the photosensitive assemblies to move along the vertical direction.

2. The lens inspection apparatus according to claim 1, wherein the photosensitive assembly portion further includes a plurality of Z-axis rotation drivers that are respectively provided on the plurality of discrete height adjusters and drive the photosensitive assembly to rotate about a vertical axis.

3. The lens inspection apparatus according to claim 1, wherein the photosensitive member section further includes XY-axis rotation drivers that are provided on the plurality of discrete height adjusters, respectively, and drive the photosensitive members to rotate about two axes perpendicular to each other on a horizontal plane.

4. The lens inspection apparatus according to claim 1, further comprising a lens test stand; the lens test jig comprises a distance-increasing lens arranged between the target and the hollow machine position.

5. The lens barrel detecting apparatus according to claim 1, further comprising a translation adjuster that drives the photosensitive member portion to translate in a horizontal plane to adjust a horizontal relative position of the photosensitive member portion and the lens barrel.

6. A lens inspection apparatus according to any one of claims 1 to 5, wherein the test stations comprise first and second test stations spaced apart in a first direction on a horizontal plane.

7. The lens inspection apparatus according to claim 6, characterized in that the lens inspection apparatus further comprises:

a slide rail extending from below the first test station to below the second test station along the first direction;

a photosensitive assembly carrying tray carrying the photosensitive assembly portion and slidably mounted on the slide rail to move between below the first test station and below the second test station; and

a loading rack including a first loading rail adjacent to the first test station and a second loading rail adjacent to the second test station to load the lens through the adjacent loading rails at the other of the first test station and the second test station in a state in which the photosensitive assembly carrying tray is moved to one of the first test station and the second test station, respectively.

8. The lens inspection apparatus of claim 7, wherein the loading bay further comprises:

the material taking rail extends along the first direction and is connected to a storage bin in which the lens is placed; and

a carrier that moves on the take-out rail in the first direction to take out a tray filled with the plurality of lenses from the magazine.

9. The lens inspection apparatus of claim 8, wherein the carrier comprises:

a moving part in contact with the take-out rail to move on the take-out rail;

a carrying part connected to the moving part and used for carrying the tray; and

the clamping part clamps or loosens the charging tray on the bearing part.

10. The lens inspection apparatus of claim 8, wherein the loading bay comprises:

a first transfer unit that moves on the first loading rail in a second direction perpendicular to the first direction, picks up a lens taken out by the carrier from the carrier, and transfers the picked lens to the first test stage; and

and the second transmission part moves on the second filling rail along the second direction, and the second transmission part shoots the lens taken out by the carrier from the carrier and transmits the shot lens to the second test bench.

11. The lens inspection apparatus according to claim 10, wherein the first transfer part and the second transfer part each include a camera for positioning a lens on the tray.

12. The lens inspection apparatus according to any one of claims 1 to 5, further comprising a turntable, a part of an outer edge of an upper surface of the turntable being located between the target and the photosensitive member portion, and the test stations including first and second test stations arranged at intervals along a circumference of the turntable at the outer edge of the upper surface of the turntable.

13. The lens inspection apparatus according to claim 12, further comprising a loading rack that captures the test image through lenses received by the plurality of hollowing machine positions of the aligned test stand in a state where one of the first test stand and the second test stand is aligned in a vertical direction with the reticle and the photosensitive member portion as the turntable rotates, and that loads the lenses at the other of the first test stand and the second test stand.

14. The lens inspection apparatus of claim 13, wherein the loading bay comprises:

the material taking rail extends along a first direction on a horizontal plane and is connected to a storage bin in which the lens is placed;

a loading rail extending in a second direction perpendicular to the first direction and abutting another portion of an outer edge of an upper surface of a turntable, the loading rail being aligned with one of the first and second test stations in a state where the one of the first and second test stations is aligned in the vertical direction with the target plate and the photosensitive assembly portion as the turntable rotates.

15. The lens inspection apparatus of claim 14, wherein the loading bay comprises:

a carrier that moves on the take-out rail in the first direction to take out a tray filled with the plurality of lenses from the magazine; and

a transfer part moving in the second direction on the loading rail, the transfer part picking up a lens taken out by the carrier from the carrier and transferring the picked lens to the other test table aligned with the loading rail.

16. The lens inspection apparatus according to claim 15, wherein the transfer section further includes a camera that positions the lens on the tray.

17. The lens detecting apparatus according to claim 15, wherein the carrier includes:

a moving part in contact with the take-out rail to move on the take-out rail;

the bearing part is connected to the moving part and is used for bearing the material tray; and

the clamping part clamps or loosens the charging tray on the bearing part.

18. A shot detection method, comprising:

filling a plurality of lenses in a plurality of hollowed-out machine positions on a test board; and

driving a plurality of photosensitive assemblies which are in one-to-one correspondence with the plurality of hollow machine positions to move along the vertical direction through a height adjuster arranged below the test bench, so that the plurality of photosensitive assemblies acquire test images provided by a target plate positioned above the test bench through the plurality of lenses;

wherein driving the plurality of photosensitive assemblies to move in a vertical direction by the height adjuster includes: the plurality of photosensitive assemblies are independently driven to move in the vertical direction by a plurality of discrete height adjusters comprised by the height adjuster.

19. The shot detection method according to claim 18, wherein the shot detection method further comprises: and driving the photosensitive assembly to rotate around a vertical axis through Z-axis rotary drivers respectively arranged on the plurality of discrete height adjusters.

20. The shot detection method as recited in claim 18, wherein the shot detection method further comprises: the photosensitive assembly is driven to rotate around two axes perpendicular to each other on a horizontal plane by XY-axis rotary drivers respectively provided on the plurality of discrete height adjusters.

21. The shot detection method according to claim 18, wherein the shot detection method further comprises: and driving the height adjuster to translate on a horizontal plane through a translation adjuster bearing the height adjuster so as to adjust the horizontal relative positions of the plurality of photosensitive assemblies and the plurality of lenses.

22. The shot detection method as recited in claim 18, wherein the shot detection method further comprises: and distance increasing mirrors are provided between the target plate and the plurality of hollow machine positions.

23. A lens inspection method according to any one of claims 18 to 22, characterized in that the test stations comprise a first test station and a second test station, and the loading further comprises:

when the test images are acquired by the plurality of photosensitive assemblies through the plurality of lenses at the first test bench, filling another plurality of lenses at the second test bench; and

when the second test bench utilizes the photosensitive assemblies to collect the test images through the lenses, the first test bench is filled with a plurality of other lenses.

24. The shot detection method as recited in claim 23, wherein the shot detection method further comprises:

the slide rail which drives the photosensitive assembly bearing disc bearing the height adjuster to extend along a first direction on a horizontal plane moves between the first test platform and the second test platform;

loading an additional plurality of lenses at the second test station through a second loading rail adjacent the second test station while capturing the test image with the plurality of photosensitive assemblies at the first test station; and

while capturing the test image with the plurality of photosensitive components at the second test station, loading an additional plurality of lenses at the first test station through a first loading rail adjacent to the first test station.

25. The shot detection method as recited in claim 23, wherein the shot detection method further comprises:

the turntable which is used for bearing the first test board and the second test board is driven to rotate at the outer edge of the upper surface;

loading the plurality of lenses at one of the first and second test stations while the other of the first and second test stations is vertically aligned with the reticle and the plurality of photosensitive assemblies as the turntable rotates.

26. The shot detection method according to claim 24 or 25, wherein said loading comprises:

the driving carrier moves along a material taking rail extending in a first direction on a horizontal plane to take out the material tray filled with the plurality of lenses from the bin; and

the drive transmission section moves along a loading rail extending in a second direction perpendicular to the first direction on a horizontal plane to pick up the plurality of lenses from the carrier and transmit the picked-up plurality of lenses to one of the first test stand and the second test stand.

27. The lens inspection method according to claim 26, wherein a plurality of lenses on the tray are positioned by a camera mounted on the transfer section during the loading.

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