CN202793738U - Lens resolution detecting device - Google Patents
Lens resolution detecting device Download PDFInfo
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- CN202793738U CN202793738U CN 201220110815 CN201220110815U CN202793738U CN 202793738 U CN202793738 U CN 202793738U CN 201220110815 CN201220110815 CN 201220110815 CN 201220110815 U CN201220110815 U CN 201220110815U CN 202793738 U CN202793738 U CN 202793738U
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Abstract
The utility model relates to a lens resolution detecting device. The lens resolution detecting device sequentially comprises a base, an X-axis displacement bench, a Y-axis displacement bench, a supporting plate, an illumination light source, a supporting structure, a fixing structure fixing a scattering sheet and a resolution plate, a lens to be detected, a camera and a support from bottom to top. The X-axis displacement bench and the Y-axis displacement bench move in horizontal directions. The horizontal directions are perpendicular to each other. The X-axis displacement bench and the Y-axis displacement bench form a two-dimension moving platform which is fixed on the base. The supporting plate is fixed on the Y-axis displacement bench. The illumination light source is fixed on the supporting plate. The fixing structure which is fixed on the supporting plate through the supporting structure is applied for fixing the scattering sheet and the resolution plate. The scattering sheet is located below the resolution plate. The scattering sheet is placed in a way to have the frosting face directed upwards. The resolution plate is placed in a way to have the face with a figure carved thereon directed upwards. The lens to be detected and the camera are fixed on the support. The lens resolution detecting device provided by the utility model has the advantages of easy establishment, operation accuracy, precise operation, and objective evaluation, etc.
Description
Technical field
The utility model time optical lens, particularly a kind of lens resolution pick-up unit.
Background technology
Along with the reach of science, the progress of technology, people are more and more higher 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 widely market.
At present, comparatively ripe Shot Detection instrument is arranged on the market, but this quasi-instrument only has external a few company to make, and price is high, 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 the method is simple and practical, and can effectively differentiate the camera lens quality.Formerly in the technology, a kind of lens resolution measuring device (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) without resolution chart leveling structure, measuring result error is large;
(3) replacing light source inconvenience can not be made evaluation to different camera lenses;
(4) light source direct irradiation resolution chart, different with true lighting condition.
Summary of the invention
Problem to be solved in the utility model is the deficiency that overcomes above-mentioned formerly technology, and a kind of lens resolution pick-up unit is provided, and this device should be able to be accurate, meticulous, objective, detector lens image quality systematically.
The technical solution of the utility model solves as follows:
A kind of lens resolution pick-up unit, characteristics are that its formation comprises from bottom to top base, X axis displacement platform, Y-axis displacement platform, supporting plate, lighting source, supporting construction, the fixed sturcture that is fixed wtih diffusion sheet and resolution chart, camera lens to be detected, camera, support successively;
Described X axis displacement platform and Y-axis displacement platform moving direction level and mutually vertical, composition two-dimensional movement platform also is fixed on the base; Described supporting plate is fixed on the described Y-axis displacement platform; Described lighting source is fixed on the described supporting plate; Described fixed mount is fixed on the supporting plate by 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 are fixed on the described support.
The wavelength of described lighting source and the operating wavelength range of described camera lens to be measured are complementary.
Effect and the design considerations of each parts of the utility model are as follows:
Described two-dimensional movement platform is used for resolution chart that adjustment fixing structure 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 miscellaneous part to the dependence of two-dimensional movement platform mounting hole, strengthens the replaceability of 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 pitching and the height of the resolution chart that support fixed structure and adjustment fixing structure 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 again resolving power test target) and self-control resolution chart, requires to select according to measuring;
The relative level position of the resolution chart that described lighting source and fixed sturcture are fixed can be regulated, and namely 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;
The mechanical parts such as described supporting plate, supporting construction and fixed sturcture in 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 utility model is embodied in the Shot Detection process, and the testing process that the utility model is complete may further comprise the steps:
1, at first, select lighting source and the resolution chart that meets testing requirement;
2, also adjusting gear is installed, is made resolution chart that the one side level of inscribing figure be 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 processed test result, reduce error;
8, regulate the two-dimension translational platform according to certain rule, repeating step 1-7 measures several points in the visual field as requested;
9, according to target to be measured, change light source, repeating step 1-8;
10, test finishes, and the analysis and summary test result generates test report.
Technique effect of the present utility model is as follows:
The utility model takes into full account the reconstruct principle, is beneficial to installation, changes parts, and debugging is convenient.
The utility model test macro is positioned on the two-dimension translational platform, by manual or motorized adjustment two-dimension translational platform, can realize the fine evaluation to the image quality of the different field positions of camera lens to be measured.
The pitching of the utility model resolution chart 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 level position of the utility model lighting source and resolution chart can be regulated, and can utilize not collinear right resolution pattern to measure.
The utility model light source is easy to change, so that the utility model can be tested the image quality of camera lens under the different wavelengths of light source lighting.
The utility model has installed diffusion sheet additional between lighting source and resolution chart, can the actual luminous or lighting condition of analog sample.
Utilize the utility model 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 utility model, will for differentiating camera lens, provide accurate, meticulous, objective lens detecting device and method.
Description of drawings
Fig. 1 is the utility model lens resolution pick-up unit synoptic diagram.
Fig. 2 is the utility model embodiment resolution chart pictorial diagram.
Fig. 3 is the utility model embodiment testing process synoptic diagram.
Fig. 4 is that synoptic diagram is chosen in the utility model embodiment object plane position.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but should limit protection domain of the present utility model with this.
Consult Fig. 1, Fig. 1 is the utility model lens resolution pick-up unit figure, the utility model lens resolution pick-up unit as seen from the figure, its formation comprise from bottom to top base 1, X axis displacement platform 2, Y-axis displacement platform 3, supporting plate 4, lighting source 5, supporting construction 6, the fixed sturcture 7 that is fixed wtih diffusion sheet and resolution chart, camera lens to be detected 8, camera 9, support 10 successively;
Described X axis displacement platform 2 and Y-axis displacement platform 3 moving direction levels and mutually vertical, composition two-dimensional movement platform also is fixed on the base 1; Described supporting plate 4 is fixed on the described Y-axis 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 by 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.
Described two-dimensional movement platform is used for resolution chart that adjustment fixing structure 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 miscellaneous part to the dependence of two-dimensional movement platform mounting hole, strengthens the replaceability of 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 pitching and the height of the resolution chart that support fixed structure 7 and adjustment fixing structure 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 adjusting resolution chart, so that the bright dipping situation of resolution chart is 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 again resolving power test target) and self-control resolution chart, requires to select according to measuring;
Described lighting source 5 can be regulated with the relative level position of the resolution chart that fixed sturcture 7 is fixed, and namely 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;
The below is the structural parameters of a specific embodiment:
Present embodiment, described two-dimensional movement platform adopt manually transfer table of commercial two dimension, and stroke is 120mm * 120mm;
Present embodiment, require to measure the image quality of camera lens under 410nm ~ 420nm light, it is the luminous light emitting diode in arrowband of 410nm that lighting source 5 adopts predominant wavelength) illumination, and designed special-shaped drive circuit board for this reason, this circuit board is with groove, when being screwed after on the supporting plate 4, can drive in the horizontal direction light emitting diode and move, need not increases the adjusting that extra device has been realized translation, has simplified the complexity of device; In order to strengthen system flexibility, 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, be respectively supporting plate 4 and fixed sturcture 7 between two nuts and the spring, wherein lower nut is fixed in screw rod on the supporting plate 4, top nut and spring consist of push-pull configuration, regulate top nut can adjustment fixing structure 7 at the height of respective support point, by cooperatively interacting of three strong points, realize the pitch regulation of the resolution chart that fixed sturcture 7 fix and highly adjusting;
Present embodiment, fixed sturcture 7 is fixed with diffusion sheet and resolution chart, wherein design three grooves and be used for to cooperate supporting construction 6, the design of its groove structure is with the special-shaped drive circuit board of lighting source 5, can be so that fixed sturcture 7 drives the resolution chart of being fixed moves horizontally;
Lighting source 5 and resolution chart in the present embodiment, equal relatively supporting plate 4 is done level and is relatively moved, and moving direction is mutually vertical, the requirement that the relative level position 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, camera 9 is selected the digital camera take charge-coupled device (CCD) as core, chooses a digital camera, and 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 the also camera photo of analysis and identification rate plate, 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 processed, and can also obtain more detailed evaluation by 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.Such as 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 camera lens to the image quality of different base colors light source.
Claims (2)
1. 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-axis displacement platform (3), supporting plate (4), lighting source (5), supporting construction (6), is fixed wtih 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-axis displacement platform (3) moving direction level and mutually vertical, composition two-dimensional movement platform also is fixed on the base (1); Described supporting plate (4) is fixed on the described Y-axis 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) by 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. 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 |
|---|---|---|---|
| CN 201220110815 CN202793738U (en) | 2012-03-22 | 2012-03-22 | Lens resolution detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220110815 CN202793738U (en) | 2012-03-22 | 2012-03-22 | Lens resolution detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793738U true CN202793738U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220110815 Expired - Fee Related CN202793738U (en) | 2012-03-22 | 2012-03-22 | Lens resolution detecting device |
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| Country | Link |
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| CN (1) | CN202793738U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607809A (en) * | 2012-03-22 | 2012-07-25 | 中国科学院上海光学精密机械研究所 | Lens identification rate detecting device |
| CN104968072A (en) * | 2015-06-10 | 2015-10-07 | 江苏杰进微电子科技有限公司 | Semiconductor integrated circuit chip test equipment lighting device |
| 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 |
-
2012
- 2012-03-22 CN CN 201220110815 patent/CN202793738U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607809A (en) * | 2012-03-22 | 2012-07-25 | 中国科学院上海光学精密机械研究所 | Lens identification rate detecting device |
| CN104968072A (en) * | 2015-06-10 | 2015-10-07 | 江苏杰进微电子科技有限公司 | Semiconductor integrated circuit chip test equipment lighting device |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20150322 |
|
| EXPY | Termination of patent right or utility model |