CN102235939A - Lens stray light detection device and lens stray light detection method - Google Patents
Lens stray light detection device and lens stray light detection method Download PDFInfo
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- CN102235939A CN102235939A CN2010101611095A CN201010161109A CN102235939A CN 102235939 A CN102235939 A CN 102235939A CN 2010101611095 A CN2010101611095 A CN 2010101611095A CN 201010161109 A CN201010161109 A CN 201010161109A CN 102235939 A CN102235939 A CN 102235939A
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Abstract
The invention relates to a lens stray light detection device for detecting stray light of a lens. The lens stray light detection device comprises a workbench, a lens bearing seat arranged on the surface of the workbench, a light source bearing seat arranged on the surface of the workbench, a rail formed on the surface of the workbench, a light source arranged at the top of the light source bearing seat, and an image acquisition unit. The lens bearing seat is used for bearing the lens. The light source bearing seat is glidingly connected with the rail. When the light source bearing seat glides along the rail, rays emitted by the light source face the lens all the time. The image acquisition unit receives the rays from the lens to form images. The workbench is provided with a plurality of scale lines for indicating the angles of the rays emitted by the light source relative to the optic axis of the lens. The invention also relates to a lens stray light detection method.
Description
Technical field
The present invention relates to a kind of parasitic light pick-up unit and method, especially about a kind of parasitic light pick-up unit and lens stray light detection method that is used for camera lens.
Background technology
Continuous development along with digital technology, digital camera is by people's widespread use, mobile phone and PDA (Personal Digital Assistant in recent years particularly, personal digital assistant) etc. portable electron device also develops to high-performance, multifunction direction fast, and digital camera and combining of these portable electron devices become the key of development mobile multimedia technology.People's logarithmic code camera ever-increasing while of demand, the requirement of logarithmic code camera properties is also more and more higher.
Yet camera lens is after assembling, because the influences such as feasibility, package program and ability of arranging in pairs or groups mutually between scantling tolerance, surfaceness, surface reflection and the refraction used, each material parts, and produces desired parasitic light during the non-design evaluation.
Existing parasitic light detection method is: in the darkroom, and hand-held camera lens, whether adopt electric torch to detect with different angles irradiation camera lens again has parasitic light to produce.Yet, be difficult to know definitely camera lens has parasitic light in which direction by the parasitic light detection method of the hand-held camera lens of electric torch irradiation, thereby reduced the accuracy of Analysis for Stray Light, and then cause the erroneous judgement of the parasitic light origin cause of formation, reduced the image quality of camera lens.
Summary of the invention
In view of this, be necessary to provide a kind of lens stray light pick-up unit and lens stray light detection method that improves the accuracy of Analysis for Stray Light.
A kind of lens stray light pick-up unit is used for that camera lens is carried out parasitic light and detects.This lens stray light pick-up unit comprises that a worktable, one be located at lens bearing seat on this table surface, one and be located at light source loading seat on this table surface, track that is formed on this table surface, one and be located at the light source at this light source loading seat top, and image acquisition unit.This lens bearing seat is used to carry this camera lens.This light source loading seat and this track are slidingly connected.In the process that this light source loading seat slides along this track, the light that this light source sends is all the time towards this camera lens.This image acquisition unit is accepted light from this camera lens to form image.This worktable is provided with many scale marks.These many scale marks are used to indicate light that this light source the sends angle of this camera lens optical axis relatively.
A kind of lens stray light detection method is used for that camera lens is carried out parasitic light and detects.This lens stray light detection method may further comprise the steps: the above-mentioned camera lens veiling glare pick-up unit that looses is provided; Camera lens and light source are placed lens bearing seat and light source loading seat respectively; In this track, move this light source loading seat, to produce the incident light of different directions to camera lens; This image acquisition unit acquisition sees through the light of this camera lens to form image; Detect the parasitic light situation of this camera lens according to the angle of this image and relative this camera lens of this light source.
Compared to prior art, lens stray light pick-up unit provided by the invention has many scale marks, thereby can accurately learn the angle of the relative camera lens of light source when the parasitic light situation occurring, and then be convenient to accurately analyze the reason that parasitic light appears in camera lens, improved the accuracy of Analysis for Stray Light.
Description of drawings
Fig. 1 is the synoptic diagram of the lens stray light proving installation that provides of the embodiment of the invention, and this lens stray light proving installation comprises worktable, lens bearing seat and light source loading seat.
Fig. 2 is the worktable among Fig. 1 and the three-dimensional cutaway view of lens bearing seat.
Fig. 3 is the decomposing schematic representation of the light source loading seat among Fig. 1.
The main element symbol description
Lens stray light pick-up unit 100
Camera lens 200
Light source loading seat 30
Light source 40
Image acquisition unit 50
Signal processing unit 60
Scale mark 102
Breach 103
Through hole 104
Fixture 105,303
Bottom supporting part 301
Top carrier portion 302
Base 3011
Accommodate post 3013
Host cavity 3015
Accepting hole 3017
Plummer 3021
Bolster stake 3023
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, the lens stray light pick-up unit 100 that the embodiment of the invention provides is used for that camera lens 200 is carried out parasitic light and detects.Camera lens 200 comprises at least one eyeglass (figure does not show).
Lens stray light pick-up unit 100 comprises that a worktable 10, one be located at the lens bearing seat 20 of worktable 10 table tops, one and be located at the light source loading seat 30 of these worktable 10 table tops, one and be located at the light source 40 at light source loading seat 30 tops, an image acquisition unit 50 and a signal processing unit 60 that is electrical connected with image acquisition unit 50.Lens bearing seat 20 is used to carry camera lens 200.
See also Fig. 2, track 101 is slidingly connected with light source loading seat 30.In the present embodiment, track 101 is up-narrow and down-wide semicircle arcuation groove (radial width of upper end that is track 101 is less than the radial width of lower end), and links to each other with lens bearing seat 20 by many scale marks 102.Certainly, track 101 also can be between many scale marks 102 and lens bearing seat 20.
The angle of relative camera lens 200 optical axises of light that many scale marks 102 are used to indicate light source 40 to be sent.Preferably, in the present embodiment, many scale marks 102 intersect at lens bearing seat 20, and the angle between many scale marks 102 equates.
Breach 103 is connected with track 101, so that light source loading seat 30 is from breach 103 injections 101.
Preferably, worktable 10 table tops also are provided with a through hole 104 that is parallel to track 101 and is connected with track 101, so that fixture 105 (seeing also Fig. 1) can and closely be located between light source loading seat 30 sidewalls and track 101 sidewalls from through hole 104 injections 101, thereby light source loading seat 30 is firmly fixed at a certain position in the track 101, and then detects the parasitic light situation of this position.Certainly, also can there be a plurality of through holes that are connected with track 101 spaced apart to be located at worktable 10 table tops, so that fixture 105 closely is located between light source loading seat 30 sidewalls and track 101 sidewalls after passing a certain through hole.
See also Fig. 3, light source loading seat 30 is slidingly connected with track 101.In the process that light source loading seat 30 slides along track 101, the light that light source 40 sends is all the time towards camera lens 200.Light source loading seat 30 has a bottom supporting part 301, a top carrier portion 302 and a fixture 303 of being located at bottom supporting part 301.
Bottom supporting part 301 is slidingly connected to track 101, it comprise a base 3011 and one be located at base 3011 hollow accommodate post 3013.Accommodate post 3013 and have a host cavity 3015.The sidewall of accommodating post 3013 also is provided with an accepting hole 3017.Accepting hole 3017 is connected with host cavity 3015.In the present embodiment, base 3011 is rounded, and its slightly larger in diameter is in the radial width of track 101 lower ends; The external diameter of accommodating post 3013 is slightly larger than the radial width of track 101 upper ends.
Top carrier portion 302 comprises a plummer 3021 and a bolster stake 3023 of being located at plummer 3021 bottoms.Plummer 3021 tops are used to carry light source 40.Bolster stake 3023 is contained in the host cavity 3015, and can accommodate post 3013 relatively and move up and down.
Fixture 303 closely is contained in the accepting hole 3017, and is connected to bolster stake 3023, so that bolster stake 3023 is fixed in a certain height.In the present embodiment, fixture 303 is a screw, and accepting hole 3017 is a threaded hole.Certainly, fixture 303 also can be the column of smooth outer surface, as long as it can closely be dissolved in the accepting hole 3017, and is connected to bolster stake 3023 and gets final product.Certainly, fixture 303 also can fix bolster stake 3023 along being parallel to direction insertion bolster stake 3023 of accommodating post 3013 and the space of accommodating between the post 3013.
Light source 40 is used for producing incident rays to camera lens 200, and the following light that can produce with respect to the different incidence angles degree of camera lens 200 of its drive in light source loading seat 30, detects camera lens 200 is carried out parasitic light.In the present embodiment, light source 40 is an incandescent lamp.Certainly, light source 40 also can be other light sources such as light emitting diode.
The contiguous camera lenses 200 of image acquisition unit 50 are provided with, and it is used to capture through the light of camera lens 200 forming image, and image is passed to signal processing unit 60.
Signal processing unit 60 these images of reception and light source 40 are with respect to the angle of camera lens 200, and analyze parasitic light situation with respect to the angle of camera lens 200 with detector lens 200 according to this image and light source 40, thereby judge that camera lens 200 is whether qualified and analyze the reason that parasitic light appears in camera lens 200, further to determine how to revise the camera lens 200 that the parasitic light situation occurs.
Lens stray light detection method of the present invention may further comprise the steps:
One lens stray light pick-up unit 100 is provided;
Camera lens 200 is placed lens bearing seat 20;
Light source loading seat 30 is put into track 101 from breach 103;
Light source 40 is placed light source loading seat 30;
Judge that light source 40 and camera lens whether with high, if different, then remove fixture 303 from accepting hole 3017, and move up and down bolster stake 3023 until light source 40 and camera lens with high, again fixture 303 closely is contained in accepting hole 3017, and butt bolster stake 3023;
Mobile light source loading seat 30 in track 101;
Image acquisition unit 50 acquisitions see through the light of camera lens 200 with the formation image, and image is passed to signal processing unit 60;
Signal processing unit 60 receives image acquisition unit 50 formed images and light source 40 angle with respect to camera lens 200, and analyzes parasitic light situation with detector lens 200 according to image acquisition unit 50 formed images and light source 40 with respect to the angle of camera lens 200.
Lens stray light pick-up unit 100 has many scale marks 102, thereby can accurately learn the angle of light source 40 relative camera lenses 200 when the parasitic light situation occurring, and then can accurately analyze the reason that parasitic light appears in camera lens 200.In addition, light source loading seat 30 can be regulated the height of light source 40 according to the model of camera lens 200, thereby can improve the utilization rate of lens stray light pick-up unit 100 so that lens stray light pick-up unit 100 can detect the camera lens 200 of multiple model.
Certainly, as if the image according to 50 sensings of image acquisition unit, the parasitic light that manually carries out discriminatory analysis camera lens 200 distributes, thereby can save signal processing unit 60.
In addition, those skilled in the art also can do other variation in spirit of the present invention.So the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. lens stray light pick-up unit, being used for that camera lens is carried out parasitic light detects, this lens stray light pick-up unit comprises a worktable, a lens bearing seat of being located on this table surface, a light source loading seat of being located on this table surface, a track that is formed on this table surface, a light source of being located at this light source loading seat top, and image acquisition unit, this lens bearing seat is used to carry this camera lens, this light source loading seat and this track are slidingly connected, in the process that this light source loading seat slides along this track, the light that this light source sends is all the time towards this camera lens, this image acquisition unit is accepted light from this camera lens to form image, it is characterized in that, this worktable is provided with many scale marks, and these many scale marks are used to indicate light that this light source the sends angle of this camera lens optical axis relatively.
2. lens stray light pick-up unit as claimed in claim 1 is characterized in that: this track is the arcuation groove.
3. lens stray light pick-up unit as claimed in claim 2 is characterized in that: this arcuation groove is semicircle arcuation groove.
4. lens stray light pick-up unit as claimed in claim 1 is characterized in that: the side of this worktable further is provided with a breach that is connected with this track, so that this light source loading seat enters this track.
5. lens stray light pick-up unit as claimed in claim 1, it is characterized in that: this light source loading seat has a bottom supporting part and a top carrier portion that is located at this bottom supporting part, this bottom supporting part is slidingly connected to this track, this top carrier portion has a plummer, and this plummer is used to carry this light source.
6. lens stray light pick-up unit as claimed in claim 1, it is characterized in that: this lens stray light pick-up unit further comprises a fixture, this table surface further is provided with the through hole that is connected with this track, this fixture passes this through hole and enters this track, and closely is located between this light source loading seat sidewall and this track bottom sidewall.
7. a lens stray light detection method is used for that camera lens is carried out parasitic light and detects, and it is characterized in that: this lens stray light detection method may further comprise the steps: provide one as the diffusing veiling glare pick-up unit of arbitrary described camera lens among the claim 1-6; Camera lens and light source are placed lens bearing seat and light source loading seat respectively; In this track, move this light source loading seat, to produce the incident light of different directions to camera lens; This image acquisition unit acquisition sees through the light of this camera lens to form image; Detect the parasitic light situation of this camera lens according to the angle of this image and relative this camera lens of this light source.
8. lens stray light detection method as claimed in claim 7 is characterized in that: this lens stray light detection method further comprises provides a signal processing unit, and this signal processing unit is electrically connected with this image acquisition unit.
9. lens stray light detection method as claimed in claim 8 is characterized in that: this image acquisition unit transfers to this signal processing unit with institute's picked image.
10. lens stray light detection method as claimed in claim 9 is characterized in that: this signal processing unit according to the image that is received and this light source relatively the angle of this camera lens analyze parasitic light situation with detector lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101611095A CN102235939A (en) | 2010-04-30 | 2010-04-30 | Lens stray light detection device and lens stray light detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101611095A CN102235939A (en) | 2010-04-30 | 2010-04-30 | Lens stray light detection device and lens stray light detection method |
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| CN102235939A true CN102235939A (en) | 2011-11-09 |
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| CN2010101611095A Pending CN102235939A (en) | 2010-04-30 | 2010-04-30 | Lens stray light detection device and lens stray light detection method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928385A (en) * | 2012-11-26 | 2013-02-13 | 中国科学院长春光学精密机械与物理研究所 | Portable stray light detection device with inclined illumination structure |
| CN102937774A (en) * | 2012-11-30 | 2013-02-20 | 信利光电(汕尾)有限公司 | Lens module detecting device |
| CN103234734A (en) * | 2013-04-09 | 2013-08-07 | 中国科学院西安光学精密机械研究所 | Large-diameter stray light measuring device and testing method |
| CN103868679A (en) * | 2014-02-28 | 2014-06-18 | 北京空间机电研究所 | Stray radiation test device for infrared optical remote sensor |
| CN103983433A (en) * | 2014-03-26 | 2014-08-13 | 歌尔声学股份有限公司 | Testing tool and testing method for stray light of camera lens |
| CN104865048A (en) * | 2015-06-02 | 2015-08-26 | 中国科学院上海技术物理研究所 | Stray light measurement device and measurement method |
| CN105181303A (en) * | 2015-10-26 | 2015-12-23 | 中国科学院苏州生物医学工程技术研究所 | Instrument for testing stray light of finite-conjugate-distance microscope objective and testing precision adjustment method |
| CN105509999A (en) * | 2015-12-31 | 2016-04-20 | 天津市东方龙光电测控技术有限公司 | High-precision lens detector |
| CN105987806A (en) * | 2015-02-02 | 2016-10-05 | 宁波舜宇光电信息有限公司 | Device and method for testing turning lens |
| CN106017874A (en) * | 2016-07-26 | 2016-10-12 | 浙江舜宇光学有限公司 | Stray light automatic detection machine and stray light automatic detection method |
| TWI583932B (en) * | 2015-12-09 | 2017-05-21 | 財團法人國家實驗研究院 | Device for measuring optical quality of lenses |
| CN106998465A (en) * | 2016-01-26 | 2017-08-01 | 韩国以事美德有限公司 | The test device of test object |
| CN107219064A (en) * | 2017-07-28 | 2017-09-29 | 中山依瓦塔光学有限公司 | The parallel light tube detection light box of combined convenient regulation |
| CN110057541A (en) * | 2019-04-12 | 2019-07-26 | 上海炬佑智能科技有限公司 | The spuious optical detection device of TOF camera and its detection method |
| CN110415226A (en) * | 2019-07-23 | 2019-11-05 | Oppo广东移动通信有限公司 | Measuring method, device, electronic equipment and the storage medium of stray light |
| CN112153364A (en) * | 2019-06-26 | 2020-12-29 | 宁波舜宇光电信息有限公司 | Stray light detection apparatus and method |
| CN112834174A (en) * | 2019-11-22 | 2021-05-25 | 岳扬智控股份有限公司 | Lens optical quality detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928385A (en) * | 2012-11-26 | 2013-02-13 | 中国科学院长春光学精密机械与物理研究所 | Portable stray light detection device with inclined illumination structure |
| CN102937774B (en) * | 2012-11-30 | 2015-04-08 | 信利光电股份有限公司 | Lens module detecting device |
| CN102937774A (en) * | 2012-11-30 | 2013-02-20 | 信利光电(汕尾)有限公司 | Lens module detecting device |
| CN103234734A (en) * | 2013-04-09 | 2013-08-07 | 中国科学院西安光学精密机械研究所 | Large-diameter stray light measuring device and testing method |
| CN103234734B (en) * | 2013-04-09 | 2016-06-08 | 中国科学院西安光学精密机械研究所 | Heavy caliber Stray Light Test device and method of testing |
| CN103868679B (en) * | 2014-02-28 | 2016-05-04 | 北京空间机电研究所 | A kind of infrared optics remote sensor stray radiation testing arrangement |
| CN103868679A (en) * | 2014-02-28 | 2014-06-18 | 北京空间机电研究所 | Stray radiation test device for infrared optical remote sensor |
| CN103983433A (en) * | 2014-03-26 | 2014-08-13 | 歌尔声学股份有限公司 | Testing tool and testing method for stray light of camera lens |
| CN105987806A (en) * | 2015-02-02 | 2016-10-05 | 宁波舜宇光电信息有限公司 | Device and method for testing turning lens |
| CN104865048A (en) * | 2015-06-02 | 2015-08-26 | 中国科学院上海技术物理研究所 | Stray light measurement device and measurement method |
| CN104865048B (en) * | 2015-06-02 | 2017-06-27 | 中国科学院上海技术物理研究所 | A kind of spuious optical measurement instrument and measuring method |
| CN105181303A (en) * | 2015-10-26 | 2015-12-23 | 中国科学院苏州生物医学工程技术研究所 | Instrument for testing stray light of finite-conjugate-distance microscope objective and testing precision adjustment method |
| CN105181303B (en) * | 2015-10-26 | 2017-10-27 | 中国科学院苏州生物医学工程技术研究所 | Infinity conjugate distance microcobjective Stray Light Testing Equipment and measuring accuracy adjusting method |
| TWI583932B (en) * | 2015-12-09 | 2017-05-21 | 財團法人國家實驗研究院 | Device for measuring optical quality of lenses |
| CN105509999A (en) * | 2015-12-31 | 2016-04-20 | 天津市东方龙光电测控技术有限公司 | High-precision lens detector |
| CN106998465B (en) * | 2016-01-26 | 2018-10-30 | 韩国以事美德有限公司 | The test device of test object |
| CN106998465A (en) * | 2016-01-26 | 2017-08-01 | 韩国以事美德有限公司 | The test device of test object |
| US10271045B2 (en) | 2016-01-26 | 2019-04-23 | Ismedia Co., Ltd. | Apparatus for testing an object |
| CN106017874A (en) * | 2016-07-26 | 2016-10-12 | 浙江舜宇光学有限公司 | Stray light automatic detection machine and stray light automatic detection method |
| CN107219064A (en) * | 2017-07-28 | 2017-09-29 | 中山依瓦塔光学有限公司 | The parallel light tube detection light box of combined convenient regulation |
| CN110057541A (en) * | 2019-04-12 | 2019-07-26 | 上海炬佑智能科技有限公司 | The spuious optical detection device of TOF camera and its detection method |
| CN112153364A (en) * | 2019-06-26 | 2020-12-29 | 宁波舜宇光电信息有限公司 | Stray light detection apparatus and method |
| CN112153364B (en) * | 2019-06-26 | 2022-06-24 | 宁波舜宇光电信息有限公司 | Stray light detection apparatus and method |
| CN110415226A (en) * | 2019-07-23 | 2019-11-05 | Oppo广东移动通信有限公司 | Measuring method, device, electronic equipment and the storage medium of stray light |
| CN112834174A (en) * | 2019-11-22 | 2021-05-25 | 岳扬智控股份有限公司 | Lens optical quality detection device |
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Application publication date: 20111109 |