CN203101027U - Test calibration device - Google Patents
Test calibration device Download PDFInfo
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- CN203101027U CN203101027U CN 201320057911 CN201320057911U CN203101027U CN 203101027 U CN203101027 U CN 203101027U CN 201320057911 CN201320057911 CN 201320057911 CN 201320057911 U CN201320057911 U CN 201320057911U CN 203101027 U CN203101027 U CN 203101027U
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Abstract
The utility model discloses a test calibration device used for testing a camera. The test calibration device comprises a lower box and an upper box which is correspondingly connected with the lower box. The lower box is internally provided with a hemispherical first chamber. The corresponding position in the upper box is provided with a hemispherical second chamber which is connected with the first chamber. An LED panel is arranged between the upper box and the lower box. The lower box is internally provided with a control drive plate which is electrically connected with the LED panel. The top of the second chamber is provided with a light outlet which is provided with a first diffusion plate. Beams emitted by the LED panel are subjected to diffuse reflection through the hemispherical first chamber and the hemispherical second chamber such that the illumination of the first diffusion plate at the light outlet is uniform, through the control drive plate, the LED panel is controlled to control the illumination and color temperature of the first diffusion plate, thus a test calibration plate capable of controlling the illumination and changing the color temperature is provided, and the uniformity of the test calibration plate is high.
Description
Technical field
The utility model relates to mobile device camera detection range, particularly a kind of test calibration device.
Background technology
The dirty method of testing of prior camera is to use illumination to be about 1000LUX, and illuminance uniformity is about 90%, and the light source of the about 5000K of colour temperature is as dirty test calibration plate, and the camera imaging of taking pictures is read information by computing machine again and judged whether finished product is qualified.For example when test CMOS camera, the test calibration plate that tradition is used to test the CMOS white balance comprises that mainly backlight, light guide plate, blooming piece and mechanical fixed structure spare form, wherein by LED as backlight.Existing backlight in, can be divided into according to the spread pattern of light source: side type and straight-down negative.The directly-down light source brightness uniformity is good.Shortcoming is that thickness is bigger, and the LED quantity of use is more, and the heating phenomenon is obvious.And side type do very thin backlight is about 50% but the light utilization efficiency of light source is less.And their core technology is the design and the making of light guide plate, and mainly contains printing and two kinds of light guide plate forms of injection molding at present, and other adds printing as injection molding, and laser dotting and corrosion etc. is not suitable for producing in batches.Printing becomes mainstream technology in the long period in the past because its cost is low, but that its major defect is a qualification rate is not high always, and requires more accurate light conducting plate structure at present, and a corresponding Tool and Die Technology difficult problem is difficult to overcome.
Along with the development of technology and improving constantly of customer requirements, the camera resolution that smart mobile phone, panel computer and other digital product use is more and more higher, just sensitivity is also harsher more and high-resolution camera is to the requirement of quality, detection to camera requires also more and more higher, total class and requirement to the test calibration plate are also more and more higher, but the colour temperature of existing test calibration plate is single, and illumination is non-adjustable, and uniformity coefficient is not high yet.
Thereby prior art is still waiting to improve and improve.
The utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of test calibration device, be intended to solve single in the prior art to test calibration plate colour temperature, illumination is non-adjustable and the not high problem of uniformity coefficient.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of test calibration device is used to test camera, wherein, comprising:
Following box with the described down corresponding last box that is connected of box,
Be provided with hemispheric first cavity in the box under described, the correspondence position on described in the box is provided with hemispheric second cavity that is connected with described first cavity,
Be provided with the LED panel that is used for back lighting between box and the following box on described, in described box down, also be provided with and be used to control the controlling and driving plate that described LED panel produces the back lighting of different illumination and different-colour, described controlling and driving plate is electrically connected described LED panel
Be provided with a light-emitting window at the top of described second cavity, the place is provided with first diffuser plate at described light-emitting window.
Described test calibration device wherein, is equipped with the LED of a plurality of different-colours on the described LED panel.
Described test calibration device wherein, is equipped with the LED annular array of two kinds of different-colours on the described LED panel.
Described test calibration device, wherein, the side near first diffuser plate on described LED panel is provided with second diffuser plate.
Described test calibration device wherein, also is provided with a casual emission coating on the inwall of described first cavity and second cavity.
Described test calibration device wherein, also is provided with an over cap on the box down described.
Compared to prior art, the test calibration device that the utility model provides, owing to adopted and comprised: following box with the described corresponding last box that is connected of box down, be provided with hemispheric first cavity in the box under described, correspondence position on described in the box is provided with hemispheric second cavity that is connected with described first cavity, be provided with the LED panel that is used for back lighting between box and the following box on described, in described box down, also be provided with and be used to control the controlling and driving plate that described LED panel produces the back lighting of different illumination and different-colour, described controlling and driving plate is electrically connected described LED panel, be provided with a light-emitting window at the top of described second cavity, the place is provided with first diffuser plate at described light-emitting window; The light that comes diffuse reflection LED panel to send by hemispheric first cavity and second cavity makes that the illumination on first diffuser plate at light-emitting window place is even, can reach more than 98%, control the illumination and the colour temperature of first diffuser plate by controlling and driving plate control LED panel, thereby provide a kind of and can control illumination, can change light source color temperature again, and the higher test calibration plate of homogeneity.
Description of drawings
Fig. 1 is the diagrammatic cross-section of test calibration device of the present utility model.
Fig. 2 is the perspective view of test calibration device of the present utility model.
Embodiment
The utility model provides a kind of test calibration device, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below with reference to the accompanying drawing embodiment that develops simultaneously the utility model further described.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1, Fig. 1 is the diagrammatic cross-section of test calibration device of the present utility model.As shown in Figure 1, the test calibration device that the utility model provides comprise down box 100 with the described box 100 corresponding last boxes 200 that are connected down, be provided with hemispheric first cavity 110 in the box 100 under described, correspondence position on described in the box 200 is provided with hemispheric second cavity 210 that is connected with described first cavity 110, be provided with the LED panel 220 that is used for back lighting between box 200 and the following box 100 on described, in described down box 100, also be provided with and be used to control described LED panel 220 and produce the controlling and driving plate 120 of the back lighting of different illumination and different-colour, described controlling and driving plate 120 is electrically connected described LED panel 220, be provided with a light-emitting window 211 at the top of described second cavity 210,211 places are provided with first diffuser plate 230 at described light-emitting window.The test calibration device that the utility model provides, produce the back lighting of different illumination and different-colour to first diffuser plate 230 by controlling and driving plate 120 control LED panels 220, make the illumination and the colour temperature of the diffuser plate 230 of winning adjustable, and adopt two groups of hemisphere spherical shell structures of hollow, casual emission by the integrating sphere type structure, make the uniformity coefficient of the diffuser plate 230 of winning higher, can reach more than 98%, thereby, the camera of camera module or mobile device can control illumination for providing a kind of, can change light source color temperature again, and the higher test calibration plate of homogeneity.
Specifically, the described box 200 of going up can be spirally connected by screw with following box 100, also can take alternate manner, and for putting only light effusion, both closely connect.Further, the described box 200 of going up all adopts the black acetal plastic with following box 100.Described first cavity 110 is arranged in the described box 100 down, is hemispheric cavity, is equivalent to the integrating sphere of half.Described second cavity 210 is arranged on described going up in the box 200, is hemispheric cavity also, is equivalent to the integrating sphere of half.When concrete the application, as shown in Figure 1, the volume of second cavity 210 is less than first cavity 110, and promptly the bulb diameter of second cavity 210 is less than the bulb diameter of first cavity 110, thereby makes light concentrate in second cavity 210, and the illumination height.Described LED panel 220 is arranged on the joint face of box 200 and following box 100 as light source.
Preferably, on the inwall of described first cavity 110 and second cavity 210, also be provided with a casual emission coating 111.Be inwall coating white diffuse reflector, and the diffuse reflection of cavity inner wall each point is even.The illuminance that the light that light source sends produces on arbitrfary point on the cavity inner wall is to be formed by the illuminance stack that reflected light repeatedly produces, and arrives first diffuser plate 230 then.Owing to after light sends from LED,, therefore can overcome stochastic factor in the diffuse reflectance measurement, improve data stability and repeatability through the space integral of integrating sphere.After the bulb diameter of described first cavity 110 and second cavity 210 is pressed the standard proportional Design and Machining, spray high diffuse reflection coating, guaranteed that by perfect spraying coating process and special-purpose spraying equipment inside coating reflectivity ρ (λ) and integrating sphere equivalence transmitance τ (λ) can reach design requirement.
Further, side near first diffuser plate 230 on described LED panel 220 is provided with second diffuser plate 240, described second diffuser plate 240 is used for first cavity, 110 irreflexive light are uniformly diffuse into second cavity 210, again after 210 diffuse reflections of second cavity from first diffuser plate, 230 outgoing of light-emitting window 211, improved the uniformity coefficient of illumination greatly.Outstanding good ground, described first diffuser plate 230 and second diffuser plate 240 are for reaching the optical glass of perfect diffusion effect after surface treatment.
Preferably, the LED of a plurality of different-colours is installed on the described LED panel 220, described controlling and driving plate 120 switches the light on and off of different-colour LED, thereby controls the colour temperature of first diffuser plate 230; Can also pass through the controlling and driving size of current, control the brightness of different LED, thereby control the illumination of first diffuser plate 230, can also under same colour temperature, regulate illumination, thereby the range of application when having improved first diffuser plate 230 as the test calibration plate has greatly satisfied existing test requirement and the total class more and more higher to scaling board.
The LED annular array of two kinds of different-colours is installed on the described LED panel 220 further.The light colour temperature of using when black-and-white photograph is taken in colour temperature that described two kinds of colour temperatures are light under the mock standard situation at sunshine (approximately 5000K) and photo studio (about 2700K), thus two kinds of different colour temperatures of changeable rotation are provided.
Preferably, see also Fig. 1 and Fig. 2, also be provided with an over cap 130 on the box 100 down, shield described.
In sum, the test calibration device that the utility model provides, the LED lamp of implantation different-colour in the LED panel by the light on and off that the controlling and driving plate switches different-colour LED, obtains the spectrum of different-colour and different illumination; Further can be by the drive current of controlling and driving plate control LED, obtain the spectrum of the different illumination of same colour temperature, the illumination range and the reference color temperature of test calibration plate have been improved greatly, improved alternative, satisfy the test needs of different illumination and different-colour requirement, also adopted the diffuse reflective structure of integrating sphere type, made uniformity coefficient can reach more than 98%, on traditional backlight light source basis, promoted the test calibration plate all with property 8%, improved the uniformity coefficient of test calibration plate greatly.The test calibration device that the utility model provides is owing in the luminous energy complete set that the employing spheric reflection can produce LED, only need a spot of LED just can reach higher illumination, and energy loss can reduce 50%.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the utility model.
Claims (6)
1. a test calibration device is used to test camera, it is characterized in that, comprising:
Following box with the described down corresponding last box that is connected of box,
Be provided with hemispheric first cavity in the box under described, the correspondence position on described in the box is provided with hemispheric second cavity that is connected with described first cavity,
Be provided with the LED panel that is used for back lighting between box and the following box on described, in described box down, also be provided with and be used to control the controlling and driving plate that described LED panel produces the back lighting of different illumination and different-colour, described controlling and driving plate is electrically connected described LED panel
Be provided with a light-emitting window at the top of described second cavity, the place is provided with first diffuser plate at described light-emitting window.
2. test calibration device according to claim 1 is characterized in that, the LED of a plurality of different-colours is installed on the described LED panel.
3. test calibration device according to claim 2 is characterized in that, the LED annular array of two kinds of different-colours is installed on the described LED panel.
4. test calibration device according to claim 1 is characterized in that, the side near first diffuser plate on described LED panel is provided with second diffuser plate.
5. test calibration device according to claim 1 is characterized in that, also is provided with a casual emission coating on the inwall of described first cavity and second cavity.
6. test calibration device according to claim 1 is characterized in that, also is provided with an over cap on the box down described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320057911 CN203101027U (en) | 2013-02-01 | 2013-02-01 | Test calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320057911 CN203101027U (en) | 2013-02-01 | 2013-02-01 | Test calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203101027U true CN203101027U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320057911 Expired - Fee Related CN203101027U (en) | 2013-02-01 | 2013-02-01 | Test calibration device |
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| CN (1) | CN203101027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374547A (en) * | 2014-11-17 | 2015-02-25 | 国家电网公司 | Method and device for jointly calibrating parameters of visible light camera and thermal infrared imager camera |
| CN109212886A (en) * | 2017-06-30 | 2019-01-15 | 鸿富锦精密工业（深圳）有限公司 | Fisheye camera mould group image test device |
-
2013
- 2013-02-01 CN CN 201320057911 patent/CN203101027U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374547A (en) * | 2014-11-17 | 2015-02-25 | 国家电网公司 | Method and device for jointly calibrating parameters of visible light camera and thermal infrared imager camera |
| CN104374547B (en) * | 2014-11-17 | 2023-12-19 | 国家电网公司 | Method and device for jointly calibrating camera parameters of visible light camera and thermal infrared imager |
| CN109212886A (en) * | 2017-06-30 | 2019-01-15 | 鸿富锦精密工业（深圳）有限公司 | Fisheye camera mould group image test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN KERUI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: COLIBRI AUTOMATION (SHENZHEN) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518057, Guangdong Province, Nanshan District province Shenzhen hi tech Zone, seven industrial district, sparrows first floor Patentee after: Shenzhen Kerui Technology Co., Ltd. Address before: 518057, Guangdong Province, Nanshan District province Shenzhen hi tech Zone, seven industrial district, sparrows first floor Patentee before: Colibri Automation (Shenzhen) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20210201 |