Automatically controlled auto-focusing parallel light tube【Technical field】
The application is related to the instrument of camera lens test, more particularly to automatically controlled auto-focusing parallel light tube.
【Background technology】
Focal length is an important parameter for reflecting lens properties, thus the focal length parameter of accurate measurement lens then seems particularlyIt is important.Traditional simulation focal length detector device is mostly by the way of manually adjusting, and is adjusted slowly, made by the way of adjusting manuallyIt is low into detection efficiency, and the precision adjusted is very low, and error is big, influences the quality of measurement.
【The content of the invention】
It is mostly regulation manually to solve the problems, such as to simulate focal length detector in the prior art, this application provides structure moreSimple automatically controlled auto-focusing parallel light tube.
The application is achieved through the following technical solutions：
Automatically controlled auto-focusing parallel light tube, including bottom plate, the front mounting plate on the bottom plate, on the front mounting plateProvided with parallel light tube lens group, test suite is additionally provided with the bottom plate, the bottom plate, which is additionally provided with, can drive the test suiteRelative to the moving assembly of parallel light tube lens group movement on bottom plate, the test suite includes connecting with the moving assemblyCarrier, the test pattern on the carrier and the lighting source on the carrier connect, the movementComponent includes the slide being connected with the carrier and the drive component of the driving slide movement.
Automatically controlled auto-focusing parallel light tube as described above, the parallel light tube lens group include, along optical axis from object plane toThe first lens, the second lens and the 3rd lens that image planes are set gradually；
The first lens object plane side is concave surface, and image planes side is concave surface, and its focal power is negative；
The second lens object plane side is concave surface, and image planes side is convex surface, and its focal power is just；
The 3rd lens object plane side is convex surface, and image planes side is convex surface, and its focal power is negative.
Automatically controlled auto-focusing parallel light tube as described above, first lens, the second lens and the 3rd lens are also fullThe following condition of foot：
(1)1.65<Nd1<1.80；20<Vd1<30；
(2)1.55<Nd2<1.88；50<Vd2<80；
(3)1.60<Nd2<1.90；30<Vd3<50；
Wherein, Nd1 is the refractive index of the first lens, and Vd1 is the abbe number of the first lens；Nd2 is the folding of the second lensRate is penetrated, Vd2 is the abbe number of the second lens；Nd3 is the refractive index of the 3rd lens, and Vd3 is the abbe number of the 3rd lens.
Automatically controlled auto-focusing parallel light tube as described above, the test suite also include being used on the carrierThe runner assembly for making described rotation test pattern be rotated on carrier, and the runner assembly can be with the carrier togetherBeing moved on bottom plate, the carrier is provided with the installation portion for being used for installing the test pattern and can be rotated relative to carrier,The runner assembly includes second that the rotatable connection cylinder being connected with the installation portion and the driving rotatable connection cylinder rotateDriver element.
Automatically controlled auto-focusing parallel light tube as described above, the installation portion are annular, the axis of the installation portion and instituteState the axis collinear of parallel light tube lens group.
Automatically controlled auto-focusing parallel light tube as described above, the drive component include the drive rod being connected with the slideAnd it is connected to drive the first driver element of the drive rod motion with the drive rod, the drive rod motion can driveThe slide is moved on base, and straight-line guidance axle is additionally provided with the base, and the slide is socketed in the straight-line guidance axleOn.
Automatically controlled auto-focusing parallel light tube as described above, the drive rod are ball screw, first driver elementFor stepper motor, first driver element is arranged on base by the first location-plate and passes through a shaft coupling and the drivingBar is connected, and the second location-plate and the 3rd location-plate are additionally provided with positioned at the side of first location-plate on the bottom plate, described straightThe both ends of the line axis of guide are connected with second location-plate and the 3rd location-plate respectively.
Automatically controlled auto-focusing parallel light tube as described above, the front side of the front mounting plate right angle setting and the bottom plate,The rear side of the bottom plate is provided with back side panel vertically arranged with bottom plate and positioned at the left side of bottom plate or right side and the installing plateThe accessory plate connected with back side panel.
Automatically controlled auto-focusing parallel light tube as described above, it is additionally provided with away described in wire clamp on the bottom plate and walks wire clamp positioned at settingPut the side of accessory plate.
Automatically controlled auto-focusing parallel light tube as described above, D-SUB and oral communication serial ports are additionally provided with the bottom plate.
Compared with prior art, the application has the following advantages：
1st, this application provides automatically controlled auto-focusing parallel light tube, by adjust test suite and parallel light tube lens group itBetween distance produce different image distance, camera lens to be tested in the opposite side of parallel light tube lens group by realizing different focalShooting, so as to the zoom performance of testing lens, and the test pattern of the application is located on moveable carrier, passes through drivingComponent, which can be realized, automatically adjusts the distance between test pattern and parallel light tube lens group, allows detection process full automation, sectionAbout the operating time is so as to effectively improve efficiency, and the precision of adjustable range is high, the overall error for reducing detection.
2nd, the automatically controlled auto-focusing collimator structure of the application is simple, and overall precision is high, and mobile repetitive positioning accuracy is high,Test pattern and the axiality of parallel light tube lens group are guaranteed, and improve the quality of detection.
3rd, D-SUB and oral communication serial ports are additionally provided with the automatically controlled auto-focusing parallel light tube of the application, is connect by thisThe existing data transfer of cause for gossip, exportable testing number is according to this and outside is controlled, and can further improve the automatically controlled auto-focusing of the applicationThe automation of parallel light tube, improve efficiency.
4th, the automatically controlled auto-focusing parallel light tube of the application is additionally provided with the runner assembly for changing test pattern angle, leads toElectronic control rotary test graph card can be made by crossing runner assembly, can enable smoothly to judge to examine with the test software that the external world is connectedSurvey, and runner assembly is integrated on carrier, can together be moved with carrier, and it is advantageous to reduce volume, and uses spiritIt is living.
【Brief description of the drawings】
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodimentAccompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, forFor those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawingsAccompanying drawing.
Fig. 1 is the structural representation of the automatically controlled auto-focusing parallel light tube of the application.
【Embodiment】
In order that technical problem, technical scheme and beneficial effect that the application solves are more clearly understood, below in conjunction withDrawings and Examples, the application is further elaborated.It should be appreciated that specific embodiment described herein is only usedTo explain the application, it is not used to limit the application.
The application is achieved through the following technical solutions：
As shown in figure 1, automatically controlled auto-focusing parallel light tube, including bottom plate 1, the front mounting plate on the bottom plate 1101, the front mounting plate 101 is provided with parallel light tube lens group 2, and test suite 3, the bottom plate 1 are additionally provided with the bottom plate 1The moving assembly that can drive the test suite 3 on bottom plate 1 relative to the parallel light tube lens group 2 movement is additionally provided with, it is describedTest suite 3 include be connected with the moving assembly carrier 31, the test pattern 32 on the carrier 31 andLighting source on the carrier 31, the moving assembly include the slide 41 being connected with the carrier 31 and drivenThe drive component that the dynamic slide 41 moves.This application provides automatically controlled auto-focusing parallel light tube, by adjusting test suiteThe distance between parallel light tube lens group produces different image distances, and camera lens to be tested passes through in the another of parallel light tube lens groupThe shooting of different focal is realized in side, so as to testing lens zoom performance, and the test pattern of the application be located at it is removableCarrier on, can be realized by drive component and automatically adjust the distance between test pattern and parallel light tube lens group, allow inspectionSurvey process full automation, the operating time is saved so as to effectively improve efficiency, and the precision of adjustable range is high, it is overall to reduce inspectionThe error of survey.
The scope that the automatically controlled auto-focusing parallel light tube of the application can simulate focal length is 0.2m to infinity.
Further, the test suite 3 also includes being used to make described rotation test chart on the carrier 31The runner assembly 33 that card 32 rotates on carrier 31, and the runner assembly 33 can be with the carrier 31 together in bottom plate 1Upper motion, the carrier 31 are provided with the installation portion for being used for installing the test pattern 32 and can be rotated relative to carrier 31,The runner assembly 33 includes the of rotatable connection cylinder be connected with the installation portion and the driving rotatable connection cylinder rotationTwo driver elements.Because different test softwares need chart rotate SFR angle make it is different, it is relative with traditional craftRegulative mode, Electronic control rotary test graph card can be made by runner assembly, rotation precision is high, improves regulation efficiency, can makeThe test software being connected with the external world can smoothly judge to detect, and runner assembly is integrated on carrier, can be with carrier oneWith movement, it is advantageous to reduce volume, and using flexible.
In addition, the installation portion is annular, the axis of the installation portion and the axis of the parallel light tube lens group 2 are total toLine.The front side of the right angle setting of front mounting plate 101 and the bottom plate 1, the rear side of the bottom plate 1 are provided with pacify vertical with bottom plate 1The back side panel 102 of dress and the accessory plate being connected positioned at the left side of bottom plate 1 or right side with the installing plate 101 and back side panel 102103.Simple in construction, overall precision is high, and mobile repetitive positioning accuracy is high, and mobile repetitive positioning accuracy is same in ± 0.01mm, movementAxle degree is guaranteed in positive and negative 0.02mm, test pattern and the axiality of parallel light tube lens group, is advantageous to improve the matter of detectionAmount.
Further, the drive component include the drive rod 42 that is connected with the slide 41 and with the drive rod 42The first driver element 43 for driving the drive rod 42 to move is connected to, the motion of drive rod 42 can drive the slide 41Moved on base 1, straight-line guidance axle 5 is additionally provided with the base 1, the slide 41 is socketed on the straight-line guidance axle 5.Specifically, the drive rod 42 is ball screw, and first driver element 43 is stepper motor, first driver element 43It is arranged on base 1 by the first location-plate 104 and is connected by a shaft coupling 44 with the drive rod 42, on the bottom plate 1The second location-plate 105 and the 3rd location-plate 106, the straight-line guidance axle 5 are additionally provided with positioned at the side of first location-plate 104Both ends be connected respectively with the location-plate 106 of the second location-plate 105 and the 3rd.It is using the advantages of ball screw：TransmissionPrecision is high, stable transmission, and friction loss is small, transmission efficiency, and rigidity is big, is hardly damaged, and is advantageous to improve this detection and setsStandby durable performance.
Further, it is additionally provided with away on the bottom plate 1 and wire clamp 6 is walked described in wire clamp 6 positioned at the one of setting accessory plate 103Side.Conveniently by circuit clamping position, prevent circuit from interfering with the normal operation of equipment.
In addition, D-SUB and oral communication serial ports 7 are additionally provided with the bottom plate.Data transfer is realized by the interface, canExport testing number according to this and outside be controlled, can further improve the automation of the automatically controlled auto-focusing parallel light tube of the application,Improve efficiency.
In addition, the parallel light tube lens group 2 include set gradually along optical axis from object plane to image planes the first lens, secondThe optical system of lens and the 3rd lens composition；The first lens object plane side is concave surface, and image planes side is concave surface, and its light focusIt is negative to spend；The second lens object plane side is concave surface, and image planes side is convex surface, and its focal power is just；The 3rd lens object planeSide is convex surface, and image planes side is convex surface, and its focal power is negative.
Specifically, first lens, the second lens and the 3rd lens also meet following condition：(1)1.65<Nd1<1.80；20<Vd1<30；(2)1.55<Nd2<1.88；50<Vd2<80；(3)1.60<Nd2<1.90；30<Vd3<50；Wherein, Nd1For the refractive index of the first lens, Vd1 is the abbe number of the first lens；Nd2 is the refractive index of the second lens, and Vd2 is second saturatingThe abbe number of mirror；Nd3 is the refractive index of the 3rd lens, and Vd3 is the abbe number of the 3rd lens.
Further, first lens strength is negative, its focal length：-230mm<f1<- 220mm, its preferred focal lengthF1 is -227.65mm.The refractive index Nd1 preferably 1.75 of first lens, abbe number Vd1 preferably 25, is advantageous to make opticsSystem or camera lens form sharp image.
Yet further, second lens strength is just its focal length 220mm<f2<240mm, its preferred focal length f2 are233.34mm.The refractive index Nd2 preferably 1.60 of second lens, abbe number Vd2 preferably 55, be advantageous to make optical system orCamera lens forms sharp image.
Also further, the 3rd lens strength is negative, its focal length：-130mm<f3<- 120mm, its preferred focal lengthF3 is -124.79mm.The refractive index Nd3 preferably 1.80 of 3rd lens, abbe number Vd3 preferably 40, is advantageous to make opticsSystem or camera lens form sharp image.
Specifically, in the present embodiment, every basic parameter of this optical lens is as shown in the table：
| Surface | Radius of curvature R (mm) | Focal length f (mm) | Refractive index Nd | Abbe number Vd |
| S1 | -145 | -227.65 | 1.75 | 25 |
| S2 | -75 | | | |
| S3 | -75 | 233.34 | 1.60 | 55 |
| S4 | 50 | | | |
| S5 | 50 | -124.79 | 1.80 | 40 |
| S6 | 60 | | | |
In upper table, along optical axis from object plane to image planes, S1, S2 correspond to two surfaces of the first lens；S3, S4 correspond toTwo surfaces of two lens；S5, S6 correspond to two surfaces of the 3rd lens.
By the way that the first lens, the second lens and the 3rd lens are reasonably arranged in pairs or groups, tied using each eyeglass itselfThe characteristics of structure, make the picture that optical system can be by the object irradiated from image planes end after optical system into an image distance farther out, in lightThe testing lens at system object plane end can be shot to the picture, be shot over long distances so as to be simulated in small space, Er QietongThe distance of picture can be changed over by crossing the distance between the object for changing image planes end and optical system.
This application provides automatically controlled auto-focusing parallel light tube, by adjusting between test suite and parallel light tube lens groupDistance produce different image distance, camera lens to be tested is by realizing the bat of different focal in the opposite side of parallel light tube lens groupTake the photograph, so as to the zoom performance of testing lens, and the test pattern of the application is located on moveable carrier, passes through driving groupPart can be achieved to automatically adjust the distance between test pattern and parallel light tube lens group, allow detection process full automation, saveOperating time is so as to effectively improve efficiency, and the precision of adjustable range is high, and body reduces the error of detection.
It is to combine one or more embodiments that particular content provides as described above, does not assert the specific reality of the applicationApply and be confined to these explanations.It is all approximate with the present processes, structure etc., identical, or under the application concept thereofMake some technologies to deduce, or replace the protection domain that should be all considered as the application.