CN1796987A - Optical detection device and detection method - Google Patents
Optical detection device and detection method Download PDFInfo
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- CN1796987A CN1796987A CN 200410091911 CN200410091911A CN1796987A CN 1796987 A CN1796987 A CN 1796987A CN 200410091911 CN200410091911 CN 200410091911 CN 200410091911 A CN200410091911 A CN 200410091911A CN 1796987 A CN1796987 A CN 1796987A
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Abstract
The invention relates to an optical detecting device and method for an optical lens module. And the optical detecting device comprises a plane display, a video sensor and a computer system for controlling the plane display and providing different test patterns, where a to-be-detected optical lens module is between the plane display and the video sensor, and the test patterns displayed by the plane display are imaged on the video sensor. The invention makes the detection process more short-cut.
Description
[technical field]
The present invention relates to a kind of optical detection apparatus and detection method, relate in particular to a kind of optical detection apparatus and detection method that is used for the detection optical camera lens.
[background technology]
In the digitized video product, the ingredient that the optics module is normally indispensable, and the quality of optical lens quality in the optics module directly influence the display quality of optics module and even digitized video product.
The optical detection apparatus of a kind of prior art optical lens resolution (Resolution) as shown in Figure 1.This optical detection apparatus 1 mainly comprises a source of parallel light 10, a penetration pattern test board 11 and a linear charge coupling element (Charge Coupled Device, CCD) 13.
During detection, optical lens module 12 is arranged between penetration pattern test board 11 and the linear CCD 13, the parallel beam that source of parallel light 10 is sent is through after the penetration pattern test board 11, enter optical lens module 12, projection on optical lens module 12, through optical lens module 12, this penetration pattern test board 11 be projected in imaging on the linear CCD 13, thereby obtain the resolution data of first group of optical lens module 12.Change the pattern of penetration pattern test board 11, repeat aforesaid operations, can obtain the resolution data of many these optical lens modules 12 of group.(Modulation TransferFunction, operational analysis MTF) records the resolution of this optical lens module 12 afterwards to carry out the modulation transition function afterwards.
Adopt this optical detection apparatus 1 detection optical camera lens module 12, can test its resolution, but because penetration pattern test board 11 does not provide More (Moire) pattern, thereby if will the degree of distortion (Distortion) and the colourity data such as (Color) of this optical lens module 12 be detected, then must change this penetration pattern test board 11, perhaps reset test environment.
The optical detection apparatus of another kind of prior art optical lens resolution as shown in Figure 2.This optical detection apparatus 2 mainly comprises a source of parallel light 20, a penetration pattern test board 21 and a linear CCD 23, and wherein this penetration pattern test board 21 is convex lens structures.
During detection, optical lens module 22 is arranged between penetration pattern test board 21 and the linear CCD 23, the parallel beam that source of parallel light 20 is sent is through after the penetration pattern test board 21, form a real image that stands upside down in optical lens module 22 the place aheads, behind the light process optical lens module 22 of this real image, imaging on linear CCD 23, thus the resolution data of first group of optical lens module 22 obtained.Change the pattern of penetration pattern test board 21, repeat aforesaid operations, can obtain the resolution data of many these optical lens modules 22 of group.Carry out recording after the MTF operational analysis resolution of this optical lens module 22 afterwards.
Equally, this optical detection apparatus 2 is not because penetration pattern test board 21 provides More's pattern, thereby, then must change this penetration pattern test board 21 if will detect to data such as the degree of distortion of this optical lens module 22 and colourities, perhaps reset test environment.Thereby cause test speed slower.
[summary of the invention]
For overcoming the slower defective of prior art optical detection apparatus test speed, the invention provides a kind of test speed optical detection apparatus comparatively efficiently.
The present invention also provides a kind of test speed optical detecting method comparatively efficiently.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of optical detection apparatus is provided, it comprises that a flat-panel screens, an image sensor and this flat-panel screens of control provide the computer system of different patterns, optical lens module to be measured is between this flat-panel screens and image sensor, and the test pattern that flat-panel screens shows is via this optical lens module imaging on this image sensor.
Another technical scheme that technical solution problem of the present invention is adopted is: a kind of optical detecting method is provided, it may further comprise the steps: a flat-panel screens and a computer system are provided, this flat-panel screens is connected with this computer system, can show different patterns under computer system control; One image sensor that is connected with this computer system is provided, and this image sensor can be imported computer system with the image data that obtains and be presented on the monitor of computer system; Optical lens module to be measured is arranged between flat-panel screens and the image sensor; Make flat-panel screens show More's pattern of focusing by computer system control, image sensor is imported computer system with the data that obtain and is presented on the monitor of computer system simultaneously, adjust the relative position between flat-panel screens, optical lens module and the image sensor, finish focusing; Show different test patterns by the computer system control flat-panel screens, image sensor obtains different pattern corresponding image data, and the input computer system; In conjunction with spatial frequency values and this spatial frequency test pattern corresponding image data of various test pattern correspondences, utilize computer system to calculate its optic regulating transfer function value, thereby calculate the resolution of this optical lens module.
Compared with prior art, optical detection apparatus of the present invention adopts the computer system control flat-panel screens that different test patterns is provided with detection method, thereby can show different patterns more fast and easily, obtain related data, adopt computer system that resulting data are handled, calculate the optic regulating transfer function value of different test pattern correspondences.In addition, because the present invention at first adopts the More to focus on test pattern before test and measures the focal length of this optical lens module related datas such as (Focus), thereby prefocus before the follow-up test action carrying out, can accelerate test speed greatly, and make the accuracy of follow-up test greatly improve.
[description of drawings]
Fig. 1 is a kind of working state schematic representation of prior art optical detection apparatus.
Fig. 2 is the working state schematic representation of another kind of prior art optical detection apparatus.
Fig. 3 is the schematic perspective view of optical detection apparatus of the present invention.
Fig. 4 is that the More focuses on test pattern.
Fig. 5 is a low spatial frequency longitudinal stripe test pattern.
Fig. 6 is a high spatial frequency longitudinal stripe test pattern.
Fig. 7 is a spatial frequency horizontal stripe test pattern.
Fig. 8 is a high spatial frequency horizontal stripe test pattern.
Fig. 9 is high spatial frequency+45 degree striped test patterns.
Figure 10 is high spatial frequency-45 a degree striped test pattern.
Figure 11 is low spatial frequency+45 degree striped test patterns.
Figure 12 is low spatial frequency-45 a degree striped test pattern.
Figure 13 is a color sense response test pattern.
Figure 14 is an optical lens module distortion measurement pattern.
[embodiment]
Seeing also Fig. 3, is the structural representation of optical detection apparatus of the present invention.This optical detection apparatus 3 mainly comprises a flat-panel screens 31, an image sensor 33, a computer system 35 and is connected the Signal transfer box 34 of computer system 35 and image sensor 33.
This flat-panel screens 31 is arranged on the transparent upper support platform 40, and display surface is over against image sensor 33.This flat-panel screens 31 has higher resolution, and equalization point is apart between 0.2～0.3mm.
This upper support platform 40 links together by four pillars 42 with lower support platform 46, and pillar 42 is perpendicular to the plane at these upper support platform 40 places and the plane at lower support platform 46 places; Be provided with the rule 44 parallel near the pillar 42 with pillar 42.Be movable the setting between this pillar 42 and the flat-panel screens 31, flat-panel screens 31 can along this pillar about in the of 42 spiral move, its displacement can be measured by the scale on the rule 44.
During detection, optical lens module 32 is arranged between flat-panel screens 31 and the image sensor 33, computer system 35 control plane displays 31 show different test patterns, this test pattern is through this optical lens module 32 imaging on image sensor 33, thereby image sensor 33 can obtain the view data of this test pattern correspondence, and this pattern data is by Signal transfer box 34 input computer systems 35.Operational computations machine system 35 shows from Fig. 4 to test pattern shown in Figure 12 thereby control this flat-panel screens 31.
Utilize computer system 35 control plane displays 31 to show that earlier More shown in Figure 4 focuses on test pattern, adjust the relative position between flat-panel screens 31, image sensor 33 and the optical lens module 32, thereby on image sensor 33, form different images, utilize computer system 35 to handle this different view data, to obtain the focal length related data of optical lens module 32, adjust this flat-panel screens 31 so that it is positioned at focal length place or the inside and outside appropriate location of focal length, thus ready for obtaining other data.
Displayed map 5 to low spatial frequency longitudinal stripe test pattern shown in Figure 12, high spatial frequency longitudinal stripe test pattern, low spatial frequency horizontal stripe test pattern, high spatial frequency horizontal stripe test pattern, high spatial frequency+45 degree striped test test patterns, high spatial frequency-45 degree striped test pattern, low spatial frequency+45 degree striped test patterns, low spatial frequency-45 spent the striped test pattern successively afterwards.Above-mentioned test pattern is forming different images through optical lens module 32 on image sensor 33, this image data is imported computer systems 35 via Signal transfer box 34, and is shown by the monitor of this computer system 35.
Spatial frequency values and this spatial frequency test pattern corresponding image data in conjunction with this striped test pattern correspondence, utilize computer system 35 to calculate optic regulating transfer function value under different directions and the spatial frequency condition, calculate the resolution of this optical lens module 32.
In addition, adopt this optical detection apparatus, show test pattern shown in Figure 13, can detect the color sense response of this optical lens module 32 by computer system 35 control break flat-panel screens 31; Show test pattern shown in Figure 14 by computer system 35 control break flat-panel screens 31, can also detect the one-tenth image distortion situation of this optical lens module 32.
Compared with prior art, optical detection apparatus 3 of the present invention adopts computer system 35 control plane displays 31 to show different test patterns, thereby can show different patterns more fast and easily, obtain related data, adopt 35 pairs of resulting data of computer system to handle, calculate the optic regulating transfer function value of different test pattern correspondences.In addition, because the present invention at first adopts the More to focus on the related datas such as focal length that test pattern is measured this optical lens module 32 before test, thereby prefocus before the follow-up test action carrying out, can accelerate test speed greatly, and make the accuracy of follow-up test greatly improve.
In addition, described flat-panel screens 31 can adopt LCD, plasma display etc.Image sensor 33 can adopt complementary metal oxide semiconductor (CMOS) (ComplementaryMetal Oxide Semiconductor, CMOS) sensor or ccd sensor.On this pillar 42 many uniform screw threads can be set, to regulate the relative position between this flat-panel screens 31 and the optical lens module 32; Also can adopt the mode of dangling to make this flat-panel screens 31 unsettled settings, and with optical lens module 32 place plane parallel, utilize the device that dangles to regulate the relative position of this flat-panel screens 31 and optical lens module 32.This computer system 35 can be made of independent computing machine, also can be made of jointly a control computer and an anacom.
Claims (10)
1. optical detection apparatus, it comprises that a flat-panel screens, an image sensor and this flat-panel screens of control provide the computer system of different test patterns, optical lens module to be measured is between this flat-panel screens and image sensor, and the test pattern that flat-panel screens shows is via this optical lens module imaging on this image sensor.
2. optical detection apparatus as claimed in claim 1 is characterized in that: also comprise a Signal transfer box, this image sensor is imported computer system by this Signal transfer box with signal.
3. optical detection apparatus as claimed in claim 1 is characterized in that: comprise that also one is used to measure the rule of the distance that this flat-panel screens moves.
4. optical detection apparatus as claimed in claim 1 is characterized in that: this flat-panel screens is LCD or plasma display.
5. optical detection apparatus as claimed in claim 1 is characterized in that: this image sensor is complementary metal oxide semiconductor (CMOS) sensor or charge coupled cell sensor.
6. optical detection apparatus as claimed in claim 1 is characterized in that: comprise that also one is used to regulate the apparatus for adjusting position of the relative position between flat-panel screens and the optical lens module.
7. optical detection apparatus as claimed in claim 6, it is characterized in that: this apparatus for adjusting position is the device that dangles, this device that dangles can make the unsettled plane that is parallel to this optical lens module place of this flat-panel screens, and can make this flat-panel screens move to change the relative position of itself and optical lens module.
8. optical detection apparatus as claimed in claim 6, it is characterized in that: this apparatus for adjusting position is the pillar that vertical this flat-panel screens is provided with, this flat-panel screens can be slided along this pillar, regulates the relative position between this flat-panel screens and the optical lens module.
9. optical detection apparatus as claimed in claim 8 is characterized in that: have the even screw thread that is used to measure the distance that flat-panel screens slides on this pillar.
10. optical detecting method, it may further comprise the steps: a flat-panel screens and a computer system are provided, and this flat-panel screens is connected with this computer system, can show different patterns under computer system control; One image sensor that is connected with this computer system is provided, and this image sensor can be imported computer system with the image data that obtains and be presented on the monitor of computer system; Optical lens module to be measured is arranged between flat-panel screens and the image sensor; Make flat-panel screens show More's pattern of focusing by computer system control, image sensor is imported computer system with the data that obtain and is presented on the monitor of computer system simultaneously, adjust the relative position between flat-panel screens, optical lens module and the image sensor, finish focusing; Show different test patterns by the computer system control flat-panel screens, image sensor obtains different pattern corresponding image data, and the input computer system; In conjunction with spatial frequency values and this spatial frequency test pattern corresponding image data of various test pattern correspondences, utilize computer system to calculate its optic regulating transfer function value, thereby calculate the resolution of this optical lens module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919116A CN100529744C (en) | 2004-12-29 | 2004-12-29 | Optical detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919116A CN100529744C (en) | 2004-12-29 | 2004-12-29 | Optical detection device and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1796987A true CN1796987A (en) | 2006-07-05 |
| CN100529744C CN100529744C (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100919116A Expired - Fee Related CN100529744C (en) | 2004-12-29 | 2004-12-29 | Optical detection device and detection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206180B (en) * | 2006-12-20 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | Lens module detecting device and detecting method |
| CN101650258B (en) * | 2008-08-14 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Lens module detector |
| CN102385333A (en) * | 2011-08-01 | 2012-03-21 | 西安石油大学 | Fault diagnosis device and diagnosis method for petroleum instrument |
| WO2015157962A1 (en) * | 2014-04-17 | 2015-10-22 | 深圳市大疆创新科技有限公司 | Method and apparatus for adjusting lens mounting flatness in real time |
| CN105405115A (en) * | 2014-08-19 | 2016-03-16 | 宁波舜宇光电信息有限公司 | Image module group alignment system and method thereof |
| CN108827979A (en) * | 2018-04-23 | 2018-11-16 | 东莞高伟光学电子有限公司 | A kind of module group lens appearance detecting method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1023660C (en) * | 1989-04-01 | 1994-02-02 | 中国科学院上海光学精密机械研究所 | Lens optical center positioning instrument |
| JP2003185531A (en) * | 2001-12-18 | 2003-07-03 | Olympus Optical Co Ltd | Apparatus for inspecting representation performance of camera lens |
| CN2636219Y (en) * | 2003-07-24 | 2004-08-25 | 信统科技股份有限公司 | Optics lens tester |
-
2004
- 2004-12-29 CN CNB2004100919116A patent/CN100529744C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206180B (en) * | 2006-12-20 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | Lens module detecting device and detecting method |
| CN101650258B (en) * | 2008-08-14 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Lens module detector |
| CN102385333A (en) * | 2011-08-01 | 2012-03-21 | 西安石油大学 | Fault diagnosis device and diagnosis method for petroleum instrument |
| WO2015157962A1 (en) * | 2014-04-17 | 2015-10-22 | 深圳市大疆创新科技有限公司 | Method and apparatus for adjusting lens mounting flatness in real time |
| US10375383B2 (en) | 2014-04-17 | 2019-08-06 | SZ DJI Technology Co., Ltd. | Method and apparatus for adjusting installation flatness of lens in real time |
| CN105405115A (en) * | 2014-08-19 | 2016-03-16 | 宁波舜宇光电信息有限公司 | Image module group alignment system and method thereof |
| CN105405115B (en) * | 2014-08-19 | 2018-11-23 | 宁波舜宇光电信息有限公司 | A kind of image mould group is to heart system and method |
| CN108827979A (en) * | 2018-04-23 | 2018-11-16 | 东莞高伟光学电子有限公司 | A kind of module group lens appearance detecting method |
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| Publication number | Publication date |
|---|---|
| CN100529744C (en) | 2009-08-19 |
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