CN102607809A - Lens identification rate detecting device - Google Patents
Lens identification rate detecting device Download PDFInfo
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- CN102607809A CN102607809A CN2012100777054A CN201210077705A CN102607809A CN 102607809 A CN102607809 A CN 102607809A CN 2012100777054 A CN2012100777054 A CN 2012100777054A CN 201210077705 A CN201210077705 A CN 201210077705A CN 102607809 A CN102607809 A CN 102607809A
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- displacement platform
- camera lens
- axial displacement
- resolution chart
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Abstract
The invention relates to a lens identification rate detecting device. The structure of the device comprises a base, an X axial displacement platform, a Y axial displacement platform, a supporting plate, an illuminating light source, a supporting structure, a fixing structure for fixing a scatter and an identification rate plate, a to-be-detected lens, a camera and a support which are sequentially arranged from bottom to top, wherein the moving directions of the X axial displacement platform and the Y axial displacement platform are horizontal and mutually vertical, and the X axial displacement platform and the Y axial displacement platform form a two-dimensional moving platform and are then fixed on the base, the supporting plate is fixed on the Y axial displacement platform, the illuminating light source is fixed on the supporting plate, the fixing support is fixed on the supporting plate through the supporting structure, the fixing structure is used for fixing the scatter and the identification rate plate, the scatter is positioned below the identification rate plate, the frosting surface of the scatter faces upwards, the surface of the identification rate plate, which is engraved with patterns, faces upwards, and the to-be-detected lens and the camera are fixed on the support. The lens identification rate detecting device has the advantages that the setting-up is easy, the operation is accurate and fine, the evaluation is objective, and the like.
Description
Technical field
Time optical lens of the present invention, particularly a kind of camera lens resolution pick-up unit.
Background technology
Along with the reach of science, development of technology, people are increasingly high for the quality requirements of obtaining image; And the quality of obtaining image is closely related with the quality of the camera lens that adopts, and can differentiate effectively that the device of lens imaging quality has market widely.
At present, comparatively ripe Shot Detection instrument is arranged on the market, but this quasi-instrument has only external a few company to make, and expensive, complex operation is only applicable to professional domain, is unfavorable for applying.
The standard of differentiating the camera lens quality has a lot, and measuring its resolution is a kind of method that extensively adopts, and this method is simple and practical, and can differentiate the camera lens quality effectively.Formerly in the technology, a kind of camera lens resolution measurement mechanism (utility model patent, application number 200920235085.6) is arranged, this device has been realized economic easy-to-use requirement, but has following shortcoming:
(1) image quality of imaging viewing field can only be simply measured, meticulous evaluation can't be formed for each visual field point of whole field of view;
(2) no resolution chart leveling structure, measuring result error is big;
(3) light source is changed inconvenience, can not make evaluation to different camera lenses;
(4) light source direct irradiation resolution chart, different with true lighting condition.
Summary of the invention
The problem that the present invention will solve is to overcome the above-mentioned deficiency of technology formerly, and a kind of camera lens resolution pick-up unit is provided, and this device should be able to be accurate, meticulous, objective, detector lens image quality systematically.
Technical scheme of the present invention solves as follows:
A kind of camera lens resolution pick-up unit, characteristics are that its formation comprises from bottom to top base, X axis displacement platform, Y axial displacement platform, supporting plate, lighting source, supporting construction, the fixed sturcture of fixing diffusion sheet and resolution chart, camera lens to be detected, camera, support successively;
Described X axis displacement platform and Y axial displacement platform moving direction level and vertical are each other formed two-dimentional mobile platform and are fixed on the base; Described supporting plate is fixed on the described Y axial displacement platform; Described lighting source is fixed on the described supporting plate; Described fixed mount is fixed on the supporting plate through supporting construction; Described fixed sturcture is used for fixing diffusion sheet and resolution chart, and diffusion sheet is positioned at the below of resolution chart, and described diffusion sheet frosting is placed up, and resolution chart is carved with one of the figure placement that faces up; Described camera lens to be detected and camera fixing are on described support.
The wavelength of described lighting source and the operating wavelength range of described camera lens to be measured are complementary.
The effect and the design considerations of each parts of the present invention are following:
Described two-dimentional transfer table is used for regulating the resolution chart that fixed sturcture fixes and the horizontal relative position of camera, is used for the test of the different visual field points in full visual field;
The effect of described supporting plate is to provide middleware, reduces the dependence of miscellaneous part to two-dimentional transfer table mounting hole, the replaceability of enhanced system parts;
The light source that described lighting source requires for any coincidence measurement, it selects foundation is camera lens operating wavelength range to be measured;
The effect of described supporting construction is the pitching and the height of the resolution chart that support fixed structure and adjusting fixed sturcture are fixed;
The diffusion sheet that described fixed sturcture is fixed is changed according to camera lens to be measured, act as make resolution chart the bright dipping situation near the actual luminous or lighting condition of sample;
The resolution chart that described fixed sturcture is fixed is a kind of of commercial resolution chart (claiming resolving power test target again) and self-control resolution chart, selects according to measurement requirement;
The relative horizontal level of the resolution chart that described lighting source and fixed sturcture are fixed can be regulated, and promptly lighting source can illuminate the not collinear right resolution figure of resolution chart;
Described camera, a kind of for commercial digital camera requires its photograph to make things convenient for eye-observation and can be for Computer Storage and analysis;
Mechanical parts such as described supporting plate, supporting construction and fixed sturcture under situation about meeting the demands, adopt Simplicity in Design, maximizedly satisfy system's reconfigurability and are easy to make up characteristic;
Advantage of the present invention is embodied in the Shot Detection process, and the testing process that the present invention is complete may further comprise the steps:
1, at first, select lighting source and the resolution chart that coincidence detection requires;
2, also adjusting gear is installed, is made resolution chart that the one side level of inscribing figure arranged;
3, regulating device makes camera lens optical axis vertical, and image planes overlap with the camera imaging face, and object plane overlaps with the one side that resolution chart is carved with figure;
4, open lighting source, the illumination resolution chart;
5, camera is made a video recording to described resolution chart;
6, the camera photo of resolution chart is analyzed, drawn the resolution of camera lens;
7, repeating step 1-6 several times are handled test result, reduce error;
8, regulate the two-dimension translational platform according to certain rules, repeating step 1-7 measures some spots in the visual field as requested;
9,, change light source, repeating step 1-8 according to target to be measured;
10, EOT, the analysis and summary test result generates test report.
Technique effect of the present invention is following:
The present invention takes into full account the reconstruct principle, is beneficial to installation, changes parts, and debugging is convenient.
Test macro of the present invention is positioned on the two-dimension translational platform, through manual or motorized adjustment two-dimension translational platform, can realize the fine evaluation to the image quality of camera lens different fields of view to be measured position.
The pitching of resolution chart of the present invention can be regulated, and the face that the adjustment resolution chart is carved with figure is vertical with camera lens optical axis, can reduce measuring error.
The relative horizontal level of lighting source of the present invention and resolution chart can be regulated, and can utilize not collinear right resolution pattern to measure.
Light source of the present invention is easy to change, and makes the present invention can test the image quality of camera lens under the different wavelengths of light source lighting.
The present invention has been installed diffusion sheet additional between lighting source and resolution chart, can the actual luminous or lighting condition of analog sample.
Utilize the present invention that camera lens to be measured is estimated, can know the quality of lens imaging quality; This invention not only can be judged the resolution of camera lens accurately, can also carry out fine evaluation to the whole view field imaging quality of camera lens, and the image quality under the camera lens Different Light is passed judgment on.
Promote the use of the present invention, will accurate, meticulous, objective Shot Detection apparatus and method be provided for differentiating camera lens.
Description of drawings
Fig. 1 is a camera lens resolution pick-up unit synoptic diagram of the present invention.
Fig. 2 is an embodiment of the invention resolution chart pictorial diagram.
Fig. 3 is an embodiment of the invention testing process synoptic diagram.
Fig. 4 is that synoptic diagram is chosen in embodiment of the invention object plane position.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described, but should limit protection scope of the present invention with this.
Consult Fig. 1; Accompanying drawing 1 is a camera lens resolution pick-up unit installation drawing of the present invention; By the visible camera lens resolution pick-up unit of the present invention of figure, its formation comprises from bottom to top base 1, X axis displacement platform 2, Y axial displacement platform 3, supporting plate 4, lighting source 5, supporting construction 6, the fixed sturcture 7 of fixing diffusion sheet and resolution chart, camera lens to be detected 8, camera 9, support 10 successively.
Described X axis displacement platform 2 and Y axial displacement platform 3 moving direction levels and vertical are each other formed two-dimentional mobile platform and are fixed on the base 1; Described supporting plate 4 is fixed on the described Y axial displacement platform 3; Described lighting source 5 is fixed on the described supporting plate 4; Described fixed mount 7 is fixed on the supporting plate 4 through supporting construction 6; Described fixed sturcture 7 is used for fixing diffusion sheet and resolution chart, and diffusion sheet is positioned at the below of resolution chart, and described diffusion sheet frosting is placed up, and resolution chart is carved with one of the figure placement that faces up; Described camera lens to be detected 8 is fixed on the described support 10 with camera 9.
Described two-dimentional mobile platform is used for regulating the resolution chart that fixed sturcture 7 fixed and the horizontal relative position of camera 9, is used for the test of the different visual field points in full visual field.
The effect of described supporting plate 4 is to provide middleware, reduces the dependence of miscellaneous part to two-dimentional transfer table mounting hole, the replaceability of enhanced system parts.
The light source that described lighting source 5 requires for any coincidence measurement, it selects foundation is camera lens operating wavelength range to be measured.
The effect of described supporting construction 6 is the pitching and the height of the resolution chart that support fixed structure 7 and adjusting fixed sturcture 7 are fixed.
The diffusion sheet that described fixed sturcture 7 is fixed is changed according to camera lens to be measured, act as the illumination of adjustment resolution chart, makes the bright dipping situation of resolution chart near the actual luminous or lighting condition of sample.
The resolution chart that described fixed sturcture 7 is fixed is a kind of of commercial resolution chart (claiming resolving power test target again) and self-control resolution chart, selects according to measurement requirement.
Described lighting source 5 can be regulated with the relative horizontal level of the resolution chart that fixed sturcture 7 is fixed, and promptly lighting source 5 can illuminate the not collinear right resolution figure of resolution chart.
Described camera 9, a kind of for commercial digital camera requires its photograph to make things convenient for eye-observation and can be for Computer Storage and analysis.
Be the structural parameters of a specific embodiment below:
Present embodiment, described two-dimentional mobile platform adopt manually transfer table of commercial two dimension, and stroke is 120mm * 120mm.
Present embodiment, the image quality of camera lens under 410nm ~ 420nm light is measured in requirement, it is the luminous light emitting diode in arrowband of 410nm that lighting source 5 adopts predominant wavelengths) illumination; And designed special-shaped drive circuit board for this reason; This circuit board has groove, when being screwed after on the supporting plate 4, can drive light emitting diode in the horizontal direction and move; Need not increases the adjusting that extra device has been realized translation, has simplified the complexity of device; For enhanced system adaptability, the light intensity of light emitting diode can be regulated.
Present embodiment, supporting construction 6 adopts Simplicity in Design, has at utmost simplified system; Adopt the supported at three point framework; One of them comprises the threaded screw rod of double headed roller, spring and two nuts, is respectively supporting plate 4 and fixed sturcture 7 between two nuts and the spring, and wherein lower nut is fixed in screw rod on the supporting plate 4; Top nut and spring constitute push-pull configuration; Regulate top nut and can regulate the height of fixed sturcture 7,, realize the pitch regulation of the resolution chart that fixed sturcture 7 is fixed and highly regulate through cooperatively interacting of three strong points at respective support point.
Present embodiment; Fixed sturcture 7 is fixed with diffusion sheet and resolution chart; Wherein design three grooves and be used to cooperate supporting construction 6, the design of its groove structure can make fixed sturcture 7 drive the resolution chart level of being fixed and move with the special-shaped drive circuit board of lighting source 5.
Lighting source 5 and resolution chart in the present embodiment, equal supporting plate 4 is relatively done level and is relatively moved, and moving direction is vertical each other, the requirement that the relative horizontal level of the resolution chart that lighting source 5 and fixed sturcture 7 are fixed can be regulated.
Present embodiment, resolution chart adopt 1951USAF type resolution chart, consult accompanying drawing 2.
Present embodiment, diffusion sheet adopt common frosted glass, require can illuminate required resolution printed line to figure through the illuminating ray of diffusion sheet, and can make required resolution chart pattern imaging on camera 9.
Present embodiment, it is the digital camera of core that camera 9 is selected with the charge-coupled device (CCD), chooses a digital camera, photo storage is convenient, is beneficial to follow-up verification and analysis, and powerful processing power that can appliance computer is obtained more detailed evaluation.
The testing process of present embodiment is consulted Fig. 3.
During test, at first according to the camera lens test request, select resolution chart and lighting source, aforesaid, present embodiment adopts arrowband light emitting diode (LED) and 1951USAF type resolution chart; Then, adjusting gear with the resolution chart leveling, is placed camera lens to be measured and is adjusted its attitude, regulates lighting source to suitable brightness; At last, gather and analyze the camera photo of resolution chart, obtain the resolution of camera lens.
In order to increase the universality of native system, reduce the difficulty of system building, present embodiment is analyzed the camera photo and is adopted the range estimation mode; Obtain more objective result as having a mind to, can adopt computing machine that the camera photo is handled, and can also obtain more detailed evaluation through Computer Processing.
Duplicate measurements three times is analyzed and is summed up test result.
Regulate the two-dimension translational platform, obtain the consistance of the resolution of the different visual field points in camera lens visual field, choosing of position should be representative, and Fig. 4 is consulted in choosing of present embodiment position.
In the present embodiment, because test purpose has determined the light source that adopts, so need not to change light source.Like the quality of need measurement white light camera lens, can test with three kinds of light sources of RGB respectively, respectively three kinds of compositions of the RGB in the camera photo are analyzed, thereby obtained the image quality of camera lens the different base colors light source.
Claims (2)
1. camera lens resolution pick-up unit is characterised in that its formation comprises from bottom to top successively base (1), X axis displacement platform (2), Y axial displacement platform (3), supporting plate (4), lighting source (5), supporting construction (6), fixing the fixed sturcture (7) of diffusion sheet and resolution chart, camera lens to be detected (8), camera (9), support (10);
Described X axis displacement platform (2) and Y axial displacement platform (3) moving direction level and vertical are each other formed two-dimentional mobile platform and are fixed on the base (1); Described supporting plate (4) is fixed on the described Y axial displacement platform (3); Described lighting source (5) is fixed on the described supporting plate (4); Described fixed mount (7) is fixed on the supporting plate (4) through supporting construction (6); Described fixed sturcture (7) is used for fixing diffusion sheet and resolution chart, and diffusion sheet is positioned at the below of resolution chart, and described diffusion sheet frosting is placed up, and resolution chart is carved with one of the figure placement that faces up; Described camera lens to be detected (8) and camera (9) are fixed on the described support (10).
2. camera lens resolution pick-up unit according to claim 1 is characterized in that, the wavelength of described lighting source (5) and described camera lens operating wavelength range to be measured are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100777054A CN102607809A (en) | 2012-03-22 | 2012-03-22 | Lens identification rate detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100777054A CN102607809A (en) | 2012-03-22 | 2012-03-22 | Lens identification rate detecting device |
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| CN102607809A true CN102607809A (en) | 2012-07-25 |
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| CN2012100777054A Pending CN102607809A (en) | 2012-03-22 | 2012-03-22 | Lens identification rate detecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162940A (en) * | 2013-02-22 | 2013-06-19 | 宁波舜宇光电信息有限公司 | Novel mobile phone camera module automatic test machine |
| CN106932178A (en) * | 2017-05-08 | 2017-07-07 | 江西高瑞光电股份有限公司 | A kind of micro- column ball-screen projection detection instrument |
| CN106950039A (en) * | 2017-05-05 | 2017-07-14 | 江西高瑞光电股份有限公司 | A kind of digital camera lens detector of microspur |
| CN112067552A (en) * | 2020-07-30 | 2020-12-11 | 江苏迪盛智能科技有限公司 | Optical lens detection tool and optical lens detecting system |
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| CN1570586A (en) * | 2004-04-30 | 2005-01-26 | 宁波大学 | Automatic detecting device for spike filter |
| CN101464186A (en) * | 2007-12-21 | 2009-06-24 | 株式会社光学系统 | Photometry apparatus of luminophor |
| CN201476958U (en) * | 2009-08-19 | 2010-05-19 | 茂莱（南京）仪器有限公司 | Lens resolution measuring device |
| CN202793738U (en) * | 2012-03-22 | 2013-03-13 | 中国科学院上海光学精密机械研究所 | Lens resolution detecting device |
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2012
- 2012-03-22 CN CN2012100777054A patent/CN102607809A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570586A (en) * | 2004-04-30 | 2005-01-26 | 宁波大学 | Automatic detecting device for spike filter |
| CN101464186A (en) * | 2007-12-21 | 2009-06-24 | 株式会社光学系统 | Photometry apparatus of luminophor |
| CN201476958U (en) * | 2009-08-19 | 2010-05-19 | 茂莱（南京）仪器有限公司 | Lens resolution measuring device |
| CN202793738U (en) * | 2012-03-22 | 2013-03-13 | 中国科学院上海光学精密机械研究所 | Lens resolution detecting device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162940A (en) * | 2013-02-22 | 2013-06-19 | 宁波舜宇光电信息有限公司 | Novel mobile phone camera module automatic test machine |
| CN103162940B (en) * | 2013-02-22 | 2016-01-06 | 宁波舜宇光电信息有限公司 | A kind of cell-phone camera module automatic test machine |
| CN106950039A (en) * | 2017-05-05 | 2017-07-14 | 江西高瑞光电股份有限公司 | A kind of digital camera lens detector of microspur |
| CN106932178A (en) * | 2017-05-08 | 2017-07-07 | 江西高瑞光电股份有限公司 | A kind of micro- column ball-screen projection detection instrument |
| CN112067552A (en) * | 2020-07-30 | 2020-12-11 | 江苏迪盛智能科技有限公司 | Optical lens detection tool and optical lens detecting system |
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Application publication date: 20120725 |