CN202188902U - Near field distribution photometer - Google Patents
Near field distribution photometerDownload PDFInfo
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- CN202188902U CN202188902UCN2011203135943UCN201120313594UCN202188902UCN 202188902 UCN202188902 UCN 202188902UCN 2011203135943 UCN2011203135943 UCN 2011203135943UCN 201120313594 UCN201120313594 UCN 201120313594UCN 202188902 UCN202188902 UCN 202188902U
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Abstract
Description
[technical field]
The utility model belongs to light and actinometry field, is specifically related to a kind of near field distribution photometer.
[background technology]
Distribution photometer can be divided into two types near field, far field according to the difference of measuring distance.The far-field distribution photometer is had relatively high expectations to lab space and detector sensitivity owing to receive the influence of measuring distance.The near field distribution photometer can be realized the measurement of measured light light intensity and Luminance Distribution under short distance; And can be through calculating; Obtain photometry parameters such as light intensity and the light source total light flux of measured light under the far field; Since its take up an area of space little, detector sensitivity is required lower and can infer the optical parametric under the far field condition, become the research focus in recent years.
Existing near field distribution photometer mainly is made up of electronic imaging apparatus, the rotary table that loads electronic imaging apparatus, measured light and the lamp anchor clamps etc. that load measured light; Fixed distance between electronic imaging apparatus (like the brightness of image meter) and measured light, this method can not realize the effective measurement to the bigger Different Light of size span.Therefore in the prior art; General through using different electronic imaging apparatus, even not unidimensional near field distribution photometer to measure the light source of different size; But and, and be difficult to the real measurement demand that satisfies every kind of measured light because light source is of a great variety, the size span is bigger, and above-mentioned solution equipment input cost is very high; Must there be the measurement result of part light source very undesirable, have greatly limited the photometric widespread use of near field distribution.
[utility model content]
To the deficiency of above-mentioned prior art, the utility model aims to provide a kind of near field distribution photometer of scalable measuring distance, and the spatial brightness that can be convenient for measuring wide range of size inner light source distributes, thereby draws the space photometric distribution of measured light.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of near field distribution photometer; Comprise the turntable bearing, pivoted arm and light source supporting arm, pivoted arm is connected with the turntable bearing respectively with the light source supporting arm; On the described pivoted arm electronic imaging apparatus is set; Described electronic imaging apparatus relatively rotates around measured light under the drive of pivoted arm, it is characterized in that, the measuring distance governor motion is set on the said pivoted arm.The measuring distance governor motion connects pivoted arm and the receiver supporting arm that loads electronic imaging apparatus, moves along pivoted arm thereby the receiver arm moves the drive electronic imaging apparatus through the measuring distance governor motion along pivoted arm.
For the less light source to be measured of size, if light source imaging on detector array is less than normal, can make the receiver supporting arm move through regulating the measuring distance governor motion along turntable pivoted arm light source to be measured in opposite directions, shorten the image distance.For larger-size light source to be measured, if the imaging of light source on detector array is bigger than normal, can make the receiver supporting arm move through regulating the measuring distance governor motion along the opposing light source to be measured of pivoted arm, increase measuring distance.After the above-mentioned mobile completion through locking device locking measuring distance governor motion with fixing receiver sway brace.
Technical scheme is further limited and improves as follows:
As preferably, electronic imaging apparatus is made up of imaging lens and two-dimensional array detector, and imaging lens directly receives the light beam from measured light, and measured light is imaged onto on the two-dimensional array detector.
As preferably; The imaging lens of said electronic imaging apparatus is a Varifocal zoom lens, and Varifocal zoom lens comprises the zoom controller of two or more lens, convertible lens focus and the focalizer of regulating the electronic imaging apparatus blur-free imaging, regulates the position of each lens in the lens combination through regulating zoom controller; Promptly regulate the distance between lens and the lens; Change the size of the synthetic focal length of lens group, thereby change the object distance of measured light, guarantee that measured light is imaged onto on the detector.
Suppose the convex lens L1 of the lens combination of electronic imaging apparatus by two fixed focal lengths, L2 forms, and focal length is respectively f1, and f2, the synthetic focal length of lens optical system are that its imaging geometry index path of f. is as shown in Figure 2.Through the position of adjustment L1 and L2, can change the size of synthetic focal distance f, specify as follows:
After changing the interval between lens combination, the synthetic focal distance f of system is:
f＝f1β2………………………………………………………………………(1)
If zoom lens is made up of k lens, behind the interval between the change lens combination, then the synthetic focal distance f of system is:
f＝f1β2β3·…·βk………………………………………………………(2)
F described here1Be the focal length of first lens combination, β2Be the vertical magnification of second lens combination to first lens combination focal plane, β3Be the vertical magnification of the 3rd lens combination to second lens combination focal plane, βkBe the vertical magnification of k lens combination to k-1 lens combination focal plane.The zooming effect of above compound lens imaging is equivalent to the zooming effect that focal length is the single lens of f.
Perhaps, the imaging lens of described electronic imaging apparatus is interchangeable, and to adapt to the measured light of different size and type, imaging lens can be wide-angle lens or telephoto lens or other types camera lens, and its type selecting is looked concrete measured light and decided.
As preferably, on the turntable bearing, be provided with the turntable bearing affixed decide arm, decide to connect on the arm light source controlling mechanism, the light source supporting arm passes through light source controlling mechanism and decides arm and be connected.Described light source controlling mechanism is the combination that light source is regulated guide rail and light source adjusting slider; The light source adjusting slider is connected with the light source supporting arm; Regulate light source controlling mechanism and move the light source supporting arm, drive measured light and move, to regulate the vertical range of measured light along deciding the arm direction.
As preferably, the light source works platform is set on the light source supporting arm, measured light is loaded on the described light source works platform.Light source controlling mechanism drives the light source sway brace and moves up and down along deciding the arm direction, and the light source works platform also moves up and down under the drive of light source sway brace, thus the upright position of adjustment measured light; Measured light also moves horizontally on the surface level at light source works platform place simultaneously.When actual measurement, can the luminosity of measured light be centered close in the pivoted arm rotating shaft, and overlap through regulating the vertical and horizontal level of measured light with the rotation center of distribution photometer, guarantee the accuracy of measurement result.
Above-mentioned near field distribution photometer comprises two kinds of rotating manners in the measuring process: pivoted arm rotates around the axis and drives electronic imaging apparatus and rotate around measured light, and measured light is around light source rotating shaft rotation.During measurement, the vertical and horizontal level of adjustment measured light makes the luminosity of light source be centered close in the pivoted arm rotating shaft earlier; Start the pivoted arm wheelwork, the pivoted arm arm rotating shaft that rotates is rotated, and the line of measured light luminosity center and electronic imaging apparatus is an imaging axis, and the electronic imaging apparatus collection is the photometric parameter on a certain circumferential ring zone face of center, parallel and pivoted arm with light source to be measured.Then, measured light is rotated a certain interval angle around the light source rotating shaft, repeat above-mentioned measurement.These two kinds of rotating manners combine and can realize the measurement of light source total space photometric distribution to be measured.It should be noted that and adopt this metering system, measured light keeps stationary state in the luminosity sampling, stabilized illumination, thus having overcome owing to light source motion errors caused, measuring accuracy is high.
As preferably; Described measuring distance is regulated the combination of guide rail and measuring distance adjusting slider; Described measuring distance adjusting slider is connected with the receiver supporting arm, makes the receiver supporting arm drive electronic imaging apparatus and moves along the pivoted arm direction, to regulate the measuring distance of measured light.
Above-mentioned measuring distance governor motion and the imaging lens of electronic imaging apparatus are regulated and can be used in combination, but with the size span and the type in further expansion photometry source.For example; As for a certain larger-size measured light; The lofty perch that the measuring distance governor motion has been adjusted to pivoted arm still can not satisfy the measurement demand, and can change the focal length of the imaging lens of electronic imaging apparatus this moment, thereby changes the object distance of measured light; Guarantee that measured light is imaged onto on the detector, to satisfy measurement requirement.In a word, through the different governor motion of flexible Application, the measurable dimension of light source span of the near field distribution photometer of the utility model is big, and type class is many.
As a kind of technical scheme, above-mentioned near field distribution photometer comprises the Electronic Control measuring unit of adjustable errors caused by the variation of measuring distance, and the Electronic Control measuring unit is electrically connected with electronic imaging apparatus.This is because when measuring distance one timing, the explorer response value in light-source brightness and the electronic imaging apparatus is proportional, utilizes this principle can realize brightness measurement; But when measuring distance changed, above-mentioned proportional relation changed, and brightness measurement then can produce error.Utilize the Electronic Control measuring unit to measure the same uniform luminance source under a series of different measuring distances in advance; Obtain the relation between the brightness measurement sum of errors distance; Adopt interpolation method to obtain the range correction coefficient, the measurement result of correcting electronic imaging device obtains accurate measurement result.
In sum; The disclosed near field distribution photometer of the utility model for the big light source different to be measured of size span, both need not be changed distribution photometer; Also need not change electronic imaging apparatus; Only need to change the conjugate distance between the image through the measuring distance governor motion, the spatial brightness that can be convenient for measuring wide range of size inner light source distributes, thereby draws the space photometric distribution of measured light.
[description of drawings]
Accompanyingdrawing 2 is the zoom controller varifocal imaging synoptic diagram of the utility model;
1-turntable bearing; The 2-pivoted arm; 3-light source supporting arm; The 4-electronic imaging apparatus; The 5-measured light; 6-measuring distance governor motion; The 6-1-measuring distance is regulated guide rail; 6-2-measuring distance adjusting slider; 7-receiver supporting arm; The rotating shaft of 8-light source; The rotating shaft of 9-pivoted arm; The 10-optical axis that forms images; 11-decides arm; The 12-light source controlling mechanism; The 12-1-light source is regulated guide rail; 12-2-light source adjusting slider; 13-light source works platform.
[embodiment]
As shown in Figure 1, a kind of near field distribution photometer comprises turntable bearing 1,pivoted arm 2 and lightsource supporting arm 3, andpivoted arm 2 is connected with turntable bearing 1 respectively with lightsource supporting arm 3;Electronic imaging apparatus 4 is set on the pivotedarm 2, and rotate arm rotatingshaft 9 of pivotedarm 2 is rotated and is drivenelectronic imaging apparatus 4 and relatively rotate around measuredlight 5; Measuring distance governor motion 6 also is set on thepivoted arm 2, and measuring distance governor motion 6 connectspivoted arm 2 and thereceiver supporting arm 7 that loadselectronic imaging apparatus 4, and measuring distance governor motion 6 drivesreceiver supporting arm 7 and moves along pivotedarm 2.
Measuring distance governor motion 6 in the present embodiment is regulated the combination of guide rail 6-1 and measuring distance adjusting slider 6-2 for measuring distance; Described measuring distance adjusting slider 6-2 is connected withreceiver supporting arm 7; Makereceiver supporting arm 7 driveelectronic imaging apparatus 4 and move, to regulate the measuring distance of measuredlight 5 along pivotedarm 2 directions.
On turntable bearing 1, be provided with turntable bearing 1 affixeddecide arm 11, decide to connect on thearm 11 light source controlling mechanism 12, lightsource supporting arm 3 passes through light source controlling mechanism 12 and decidesarm 11 and be connected; Said light source controlling mechanism 12 is the combination of light source adjusting guide rail 12-1 and light source adjusting slider 12-2, and light source adjusting slider 12-2 is connected with lightsource supporting arm 3; Regulate light source controlling mechanism 12 and move lightsource supporting arm 3, drive measuredlight 5 and move, to regulate the vertical range of measuredlight 5 along decidingarm 11 directions.Present embodiment also is provided with lightsource works platform 13 on lightsource supporting arm 3, measuredlight 5 is loaded on the lightsource works platform 13, and lightsource works platform 13 can drive measuredlight 5 and on the surface level at lightsource supporting arm 3 places, move horizontally.
During actual measurement; Measuredlight 5 is loaded on the light source adjusting slider 12-2 on the lightsource sway brace 3; Light measuredlight 5, through regulating the vertical and horizontal level of measuredlight 5, be centered close in the pivotedarm rotating shaft 9 until the luminosity of measuredlight 5; And overlap with the rotation center of distribution photometer, guarantee the accuracy of measurement result; Size adjustment measuring distance governor motion 6 according to measuredlight 5 sizes makesreceiver supporting arm 7 move to obtain best measuring distance alongpivoted arm 2 again; Perhaps regulate the zoom controller of the Varifocal zoom lens in theelectronic imaging apparatus 4; Makelight source 5 to be measured be imaged on the detector array ofelectronic imaging apparatus 4 to obtain suitable lens group focal length; And the adjusting focalizer, make lens group on the conjugate distance line, move to obtain imaging the most clearly.After having confirmed measuring distance; Start pivotedarm 2 wheelworks;Pivoted arm 2 rotates around the axis and driveselectronic imaging apparatus 4 around measuredlight 5 rotations; The line of measuredlight 5 luminosity centers andelectronic imaging apparatus 4 is imagingoptical axis 10, and it is the photometric parameter on a certain circumferential ring zone face of center, parallel andpivoted arm 2 thatelectronic imaging apparatus 4 is collected with measuredlight 5; While measuredlight 5 is around lightsource rotating shaft 8 rotations, thereby realization is to the measurement of measuredlight 5 spatial light intensity distribution curves with corresponding photometry parameter.Like the beam projecting direction (promptly changing the position of measured light 5) of need conversion measuredlight 5 around lightsource rotating shaft 8, need moment of torsion to be provided for lightsource rotating shaft 8 with low power motor, the change measuredlight 5 relative anchor clamps of stepping are around the angle of lightsource rotating shaft 8.
What need state at last is: except that the foregoing description; The utility model can also have other embodiments; Those skilled in the art can make amendment or is equal to replacement the utility model, but revises the back or be equal to the technological protection domain of the utility model requirement that all drops on of replacement.
Claims (8)
1. near field distribution photometer; Comprise turntable bearing (1), pivoted arm (2) and light source supporting arm (3), pivoted arm (2) is connected with turntable bearing (1) respectively with light source supporting arm (3); Electronic imaging apparatus (4) is set on the described pivoted arm (2); Described electronic imaging apparatus (4) relatively rotates around measured light (5) under the drive of pivoted arm (2), it is characterized in that, measuring distance governor motion (6) is set on the described pivoted arm (2); Measuring distance governor motion (6) connects pivoted arm (2) and loads the receiver supporting arm (7) of electronic imaging apparatus (4), and described measuring distance governor motion (6) drives receiver supporting arm (7) and moves along pivoted arm (2).
2. a kind of near field distribution photometer as claimed in claim 1 is characterized in that the imaging lens of described electronic imaging apparatus (4) is a Varifocal zoom lens, and said Varifocal zoom lens comprises the zoom controller of two or more lens and convertible lens focus.
3. a kind of near field distribution photometer as claimed in claim 1; It is characterized in that; Turntable bearing (1) go up to be provided with turntable bearing (1) affixed decide arm (11); Decide arm (11) and go up to connect light source controlling mechanism (12), described light source supporting arm (3) through light source controlling mechanism (12) with decide arm (11) and be connected.
4. a kind of near field distribution photometer as claimed in claim 3; It is characterized in that; Said light source controlling mechanism (12) is regulated the combination of guide rail (12-1) and light source adjusting slider (12-2) for light source; Said light source adjusting slider (12-2) is connected with light source supporting arm (3), makes light source supporting arm (3) drive measured light (5) and moves along deciding arm (11) direction.
5. a kind of near field distribution photometer as claimed in claim 3 is characterized in that, light source works platform (13) is set on the described light source sway brace (3), and measured light (5) is loaded on the described light source works platform (13).
6. a kind of near field distribution photometer as claimed in claim 1; It is characterized in that; Described measuring distance governor motion (6) is regulated the combination of guide rail (6-1) and measuring distance adjusting slider (6-2) for measuring distance; Described measuring distance adjusting slider (6-2) is connected with receiver supporting arm (7), makes receiver supporting arm (7) drive electronic imaging apparatus (4) and moves along pivoted arm (2) direction.
7. a kind of near field distribution photometer as claimed in claim 1 is characterized in that, the camera lens of described electronic imaging apparatus is replaceable to be wide-angle lens or telephoto lens.
8. a kind of near field distribution photometer as claimed in claim 2 is characterized in that, comprises the Electronic Control measuring unit of adjustable errors caused by the variation of measuring distance, and the Electronic Control measuring unit is electrically connected with electronic imaging apparatus (4).
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| CN2011203135943UCN202188902U (en) | 2011-08-25 | 2011-08-25 | Near field distribution photometer |
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| CN2011203135943UCN202188902U (en) | 2011-08-25 | 2011-08-25 | Near field distribution photometer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967447A (en)* | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | LED (Light Emitting Diode) performance test box, calibrating method and performance test method |
| CN102967446A (en)* | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | LED (Light Emitting Diode) performance test box, calibrating method and performance test method |
| CN102967448A (en)* | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | A LED performance test box, calibration method and performance test method |
| CN103017897A (en)* | 2012-08-20 | 2013-04-03 | 中航华东光电有限公司 | Luminosity information measurement device and method |
| CN103196552A (en)* | 2013-03-28 | 2013-07-10 | 宁波高新区通尚光电技术有限公司 | Measuring device for light intensity of narrow-light-beam light-emitting diode (LED) lamp |
| CN103674236A (en)* | 2012-09-12 | 2014-03-26 | 上海机动车检测中心 | Fixed light source-type full space distribution luminosity measurement instrument |
| CN104515595A (en)* | 2014-12-20 | 2015-04-15 | 西安炬光科技有限公司 | Testing device for far field intensity of semiconductor light source |
| CN104864897A (en)* | 2015-05-07 | 2015-08-26 | 深圳市清时捷科技有限公司 | Zero adjusting system and method |
| CN107588933A (en)* | 2017-08-24 | 2018-01-16 | 上海复光竞成科技有限公司 | Packaged type navigates by water intensity of illumination distribution test system and method for testing |
| CN110095255A (en)* | 2019-02-19 | 2019-08-06 | 广东蚂标检测技术有限公司 | A kind of test device and its application method suitable for the distribution of LED lamp near field optic |
| CN110487401A (en)* | 2019-09-17 | 2019-11-22 | 安徽科技学院 | A kind of miniature positioning roll-setting gear and measuring method for illuminance measurement |
| CN115855260A (en)* | 2022-12-27 | 2023-03-28 | 清华大学 | Distributed photometer |
- 2011
- 2011-08-25CNCN2011203135943Upatent/CN202188902U/ennot_activeExpired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017897A (en)* | 2012-08-20 | 2013-04-03 | 中航华东光电有限公司 | Luminosity information measurement device and method |
| CN103017897B (en)* | 2012-08-20 | 2016-05-25 | 中航华东光电有限公司 | A kind of luminosity information measurement apparatus and measuring method thereof |
| CN103674236B (en)* | 2012-09-12 | 2015-08-26 | 上海机动车检测中心 | The total space distributed luminosity tester of fixed light source formula |
| CN103674236A (en)* | 2012-09-12 | 2014-03-26 | 上海机动车检测中心 | Fixed light source-type full space distribution luminosity measurement instrument |
| CN102967446A (en)* | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | LED (Light Emitting Diode) performance test box, calibrating method and performance test method |
| CN102967448B (en)* | 2012-11-20 | 2015-11-18 | 深圳清华大学研究院 | A kind of LED performance test case, scaling method and performance test methods |
| CN102967448A (en)* | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | A LED performance test box, calibration method and performance test method |
| CN102967447B (en)* | 2012-11-20 | 2015-09-23 | 深圳清华大学研究院 | A kind of LED performance test case, scaling method and performance test methods |
| CN102967447A (en)* | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | LED (Light Emitting Diode) performance test box, calibrating method and performance test method |
| CN102967446B (en)* | 2012-11-20 | 2015-09-23 | 深圳清华大学研究院 | A kind of LED performance test case, scaling method and performance test methods |
| CN103196552A (en)* | 2013-03-28 | 2013-07-10 | 宁波高新区通尚光电技术有限公司 | Measuring device for light intensity of narrow-light-beam light-emitting diode (LED) lamp |
| CN104515595A (en)* | 2014-12-20 | 2015-04-15 | 西安炬光科技有限公司 | Testing device for far field intensity of semiconductor light source |
| CN104864897A (en)* | 2015-05-07 | 2015-08-26 | 深圳市清时捷科技有限公司 | Zero adjusting system and method |
| CN107588933A (en)* | 2017-08-24 | 2018-01-16 | 上海复光竞成科技有限公司 | Packaged type navigates by water intensity of illumination distribution test system and method for testing |
| CN110095255A (en)* | 2019-02-19 | 2019-08-06 | 广东蚂标检测技术有限公司 | A kind of test device and its application method suitable for the distribution of LED lamp near field optic |
| CN110487401A (en)* | 2019-09-17 | 2019-11-22 | 安徽科技学院 | A kind of miniature positioning roll-setting gear and measuring method for illuminance measurement |
| CN110487401B (en)* | 2019-09-17 | 2022-01-07 | 安徽科技学院 | Miniature positioning distance adjusting device for illuminance measurement and measurement method |
| CN115855260A (en)* | 2022-12-27 | 2023-03-28 | 清华大学 | Distributed photometer |
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| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20120411 Termination date:20200825 |