CN102081298A - Testing device and method of infrared light source switch valve value of camera based on natural light - Google Patents
Testing device and method of infrared light source switch valve value of camera based on natural light Download PDFInfo
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- CN102081298A CN102081298A CN201010564443.5A CN201010564443A CN102081298A CN 102081298 A CN102081298 A CN 102081298A CN 201010564443 A CN201010564443 A CN 201010564443A CN 102081298 A CN102081298 A CN 102081298A
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Abstract
The invention provides a testing device and method of an infrared light source switch valve value of a camera based on natural light. The device comprises a box body, an adaptive plate and a light shading sleeve, wherein the inner side of the box body is provided with a primary light transmitting channel and a secondary light transmitting channel; the primary light transmitting channel and the secondary light transmitting channel are arranged vertically; the inner side wall of the primary light transmitting channel and the inner side of the secondary light transmitting channel are respectively provided with a light absorption layer; a diffuse reflection plate is positioned at the inner side of the box body and is arranged at the boundary position of the primary light transmitting channel and the secondary light transmitting channel; the other end of the primary light transmitting channel extends to the outer side of the box body and is provided with an illumination adjusting device; the secondary light transmitting channel extends to the outer side of the box body; the adaptive plate can be arranged detachablly at the outer side of the secondary light transmitting channel on the box body; the adaptive plate is provided with an opening hole which is adaptive to the cameral lens of the camera; the light shading sleeve is arranged at the outer side of the periphery of the opening hole; and an illumination measuring device is arranged close to the outer side of the secondary light transmitting channel on the box body. The testing process provided by the invention has the advantages that the testing process is simple and clear, and is suitable for the batch detection of the camera products.
Description
Technical field
The invention belongs to the video camera field tests, mainly relate to a kind of video camera infrared light supply switch threshold values proving installation and method based on natural light.
Background technology
Along with developing rapidly of infrared night vision system, the application that relates to more and more widely, particularly be applied to the infrared night vision function on the video camera, in the continuous increase of social crime ratio nowadays, thermal camera institute role is more outstanding, the infrared photography function is sent the infrared light supply that people are invisible to the naked eye at night and is removed to illuminate the object that is taken under the state, can photograph the image that is invisible to the naked eye under the dark surrounds.What the infrared light supply that present most of thermal camera sends adopted all is infrarede emitting diode, all must be before thermal camera dispatches from the factory through a critical value of its infrared lamp unlatching of test, the switch threshold values of video camera infrared light supply just, but the infrared ray product is not easy as people imagine, and is different in aspect conditions such as technology, detecting instrument equipment yet.
The switch threshold values of common test video camera infrared light supply, normally video camera to be measured is taken in the dark place that is provided with illumination apparatus, the good video camera to be measured of debugging earlier, then by the illuminance in the illumination apparatus adjustment dark place, utilize photoresistance in the video camera sensitivity characteristic of light is controlled the unlatching of infrared lamp or to close, the illuminance in the dark place is adjusted on the limit, whether the limit infrared lamp that detects by an unaided eye is opened, when infrared lamp is opened, stop to adjust illuminance, note the illuminance of this moment, be the switch threshold values of video camera infrared light supply to be measured.And the infrared waves of the infrared lamp that nowadays video camera adopted to grow up all be 830nm～950nm, though the visible wavelength of our human eye is 312nm～1050nm, but the visible range to the infrared light wavelength only is 620nm～760nm, so when the infrared light wavelength 830nm of video camera is above, whether naked eyes are difficult to differentiate infrared lamp and open, the result who causes adopting the switch threshold values of above-mentioned method of testing test video camera infrared light supply to be measured is inaccurate, and an illumination apparatus that is electrically connected with the city to be set, long-term test power consumption height, energy-conservation inadequately, also need to be provided with the room of a special use, it is big to take up room, and uses underaction convenient.
Summary of the invention
One of technical matters to be solved by this invention is to provide a kind of video camera infrared light supply switch threshold values proving installation based on natural light, with overcome prior art energy-conservation inadequately, take up room big, use underaction shortcoming easily.
The present invention includes casing, adaptation board and shading sleeve, described box inside is provided with first light transmission passage and second light transmission passage, described first light transmission passage is provided with second light transmission passage is vertical, first light transmission passage and the second light transmission passage madial wall are provided with light-absorption layer, be positioned at described first light transmission passage of box inside and position, the second light transmission passage boundary is provided with diffuse reflector, the other end of first light transmission passage extends to the casing outside and which is provided with the illumination adjusting gear, second light transmission passage extends to the casing outside, adaptation board detachably is located at the above second light transmission passage outside of casing, described adaptation board is provided with the perforate suitable with camera lens, described shading sleeve is located at this perforate periphery, is provided with the light exposure measurement device near being positioned at second light transmission passage outside on the described casing.
Further, described illumination adjusting gear is made up of two sliding doors that can laterally relatively move, and each sliding door is located at respectively on the casing in first light transmission passage outside.
Whether another technical matters that will solve required for the present invention is to provide a kind of method of testing that is applied in above-mentioned proving installation, be difficult to differentiate the video camera infrared lamp and open to solve in the known measuring technology naked eyes, causes the inaccurate problem of test result.
May further comprise the steps:
1), the camera lens of video camera to be measured is connected with the perforate of adaptation board, between camera infrared lamp and its power supply, current sensing means is set;
2), control illumination adjusting gear is to adjust the illuminance that natural light enters camera lens to be measured through first light transmission passage, diffuse reflector, second light transmission passage;
3), when reometer indication has electric current to produce, read the light exposure measurement value that the light exposure measurement device shows, this numerical value is the switch threshold values of this video camera infrared light supply.
By adopting the aforementioned techniques scheme, the invention has the beneficial effects as follows: the switch threshold values that utilizes natural light test video camera infrared light supply, need not to be provided with in addition the illumination apparatus that connects civil power, more energy-conservation, saving cost, test process is simple and clear, the layman also can operate, and test result is accurate.This proving installation is simple in structure, it is little, flexible and convenient to use to take up room.
Description of drawings
Fig. 1 is the cut-away view of the embodiment of the invention;
Wherein the sequence number of accompanying drawing and corresponding name are called: 1, casing, 11, first light transmission passage, 111, sliding door, 12, second light transmission passage, 2, adaptation board, 3, shading sleeve, 4, diffuse reflector, 5, video camera, 6, reometer, 7, the light exposure measurement device.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are elaborated.
A kind of video camera infrared light supply switch threshold values proving installation of the present invention based on natural light, as shown in Figure 1, this device comprises casing 1, adaptation board 2 and shading sleeve 3, described casing 1 inboard is provided with first light transmission passage 11 and second light transmission passage 12, described first light transmission passage 11 and the 12 vertical settings of second light transmission passage, smear the material of one deck light absorptive on first light transmission passage 11 and second light transmission passage, 12 madial walls, when irradiate light is on each madial wall of casing, the solar flare that can not produce mapping and bulk is with reflective, but after absorbing light again diffuse reflection go out part light, thereby keep the regular shade of grey, guarantee precision of test result.Be positioned at described first light transmission passage 11 of box inside and position, second light transmission passage, 12 boundary and be provided with diffuse reflector 4, this diffuse reflector 4 forms two 45 angles of spending respectively with box inside wall 13 and madial wall 14.The other end of first light transmission passage 11 extends to casing 1 outside and which is provided with the illumination adjusting gear, second light transmission passage 12 extends to the casing outside, adaptation board 2 detachably is located at casing 1 the above second light transmission passage, 12 outside, described adaptation board 2 is provided with and the suitable perforate of the camera lens of video camera 5, the camera lens size specification of the video camera 5 of different manufacturers production differs, this adaptation board 2 changes easily according to the big I of the camera lens of video camera, described shading sleeve 3 is located at this perforate periphery, during test, be used to prevent the camera lens of first light transmission passage 11 irradiate light in addition, influence precision of test result to video camera.Be provided with light exposure measurement device 7 near being positioned at second light transmission passage, 12 outsides on the described casing 1, this light exposure measurement device can write down the natural light illumination value that enters in the casing effectively.
As shown in Figure 1, the described illumination adjusting gear of present embodiment is made up of two sliding doors that can laterally relatively move 111, and each sliding door 111 is located at respectively on the casing in first light transmission passage, 11 outsides.But this illumination adjusting gear also can be arranged to the mechanism of diaphragm of the folding in the similar camera lens, also can be arranged to the sliding door structure of single laterally push-and-pull.By the natural light in this illumination adjusting gear control irradiation inlet body, thereby adjust the illuminance that natural light enters camera lens to be measured through first light transmission passage, diffuse reflector, second light transmission passage effectively.
When utilizing the video camera infrared light supply switch threshold values proving installation based on natural light of the present invention to test the switch threshold values of video camera infrared light supply, can carry out according to following steps:
When test job begins, the camera lens of video camera 5 to be measured is connected with the perforate of adaptation board 2, because the camera lens of video camera 5 is in casing 1 at this moment, during test, we can't see that the infrared lamp of video camera 5 is to open or closed condition, so we are provided with reometer 6 between the infrared lamp of camera and its power supply, when the infrared lamp of camera is opened, there is electric current to pass through, reometer 6 has indication to have electric current to produce, so can know the unlatching or the closed condition of the infrared lamp of camera 5 by reometer 6; After above-mentioned video camera to be measured 5 connections are finished, with its unlatching, then control the illumination adjusting gear, the illumination adjusting gear of present embodiment adopts two sliding doors that can laterally relatively move 111, at first with sliding door 111 complete openings, natural light is through first light transmission passage 11, diffuse reflector 4, second light transmission passage 12 enters the camera lens of video camera 5 to be measured, at this moment, reometer 6 does not have current value to show, the infrared lamp of camera 5 is a closed condition, close sliding door 111 then gradually, whether reometer 6 is observed on the limit has current value to show, when reometer 6 indications have electric current to produce, and phase down sliding door 111, read the light exposure measurement value that light exposure measurement device 7 shows, this numerical value is the switch threshold values of this video camera infrared light supply.
Claims (3)
1. based on the video camera infrared light supply switch threshold values proving installation of natural light, it is characterized in that: this device comprises casing, adaptation board and shading sleeve, described box inside is provided with first light transmission passage and second light transmission passage, described first light transmission passage is provided with second light transmission passage is vertical, first light transmission passage and the second light transmission passage madial wall are provided with light-absorption layer, be positioned at described first light transmission passage of box inside and position, the second light transmission passage boundary is provided with diffuse reflector, the other end of first light transmission passage extends to the casing outside and which is provided with the illumination adjusting gear, second light transmission passage extends to the casing outside, adaptation board detachably is located at the above second light transmission passage outside of casing, described adaptation board is provided with the perforate suitable with camera lens, described shading sleeve is located at this perforate periphery, is provided with the light exposure measurement device near being positioned at second light transmission passage outside on the described casing.
2. the video camera infrared light supply switch threshold values proving installation based on natural light according to claim 1, it is characterized in that: described illumination adjusting gear is made up of two sliding doors that can laterally relatively move, and each sliding door is located at respectively on the casing in first light transmission passage outside.
3. based on the video camera infrared light supply switch threshold values method of testing of natural light, it is characterized in that may further comprise the steps:
1), the camera lens of video camera to be measured is connected with the perforate of adaptation board, between camera infrared lamp and its power supply, current sensing means is set;
2), control illumination adjusting gear is to adjust the illuminance that natural light enters camera lens to be measured through first light transmission passage, diffuse reflector, second light transmission passage;
3), when reometer indication has electric current to produce, read the light exposure measurement value that the light exposure measurement device shows, this numerical value is the switch threshold values of this video camera infrared light supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105644435A CN102081298B (en) | 2010-11-17 | 2010-11-17 | Testing device and method of infrared light source switch valve value of camera based on natural light |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105644435A CN102081298B (en) | 2010-11-17 | 2010-11-17 | Testing device and method of infrared light source switch valve value of camera based on natural light |
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| Publication Number | Publication Date |
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| CN102081298A true CN102081298A (en) | 2011-06-01 |
| CN102081298B CN102081298B (en) | 2012-06-06 |
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| CN2010105644435A Expired - Fee Related CN102081298B (en) | 2010-11-17 | 2010-11-17 | Testing device and method of infrared light source switch valve value of camera based on natural light |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081297A (en) * | 2010-11-17 | 2011-06-01 | 泉州市东南光电有限公司 | Device and method for testing switch threshold of infrared secondary light source of camera |
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| JPH01105132A (en) * | 1987-10-19 | 1989-04-21 | Nippon Telegr & Teleph Corp <Ntt> | Infrared-light detector |
| JPH03164732A (en) * | 1989-11-24 | 1991-07-16 | Nippon Hoso Kyokai <Nhk> | Method for measuring optical characteristic of lens plate for stereoscopic display |
| JPH08185583A (en) * | 1994-12-28 | 1996-07-16 | Nippon Arefu:Kk | Detector |
| JPH11196307A (en) * | 1997-12-26 | 1999-07-21 | Sony Corp | Image pickup device |
| US6369688B1 (en) * | 1999-06-15 | 2002-04-09 | Matsushita Electric Works, Ltd. | Automatic gang switch having a heat ray sensor |
| JP2006084214A (en) * | 2004-09-14 | 2006-03-30 | Tokyo Tsushinki Kogyo Kk | Infrared detector |
| US20080252730A1 (en) * | 2007-04-10 | 2008-10-16 | Winfield Vision Development (Holding) Ltd. | Infrared sensitive security lighting system |
| CN101872106A (en) * | 2010-05-21 | 2010-10-27 | 深圳市艾威视数码科技有限公司 | Intelligent infrared camera and intelligent infrared light intensity adjustment method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3164732B2 (en) * | 1994-07-04 | 2001-05-08 | 富士通株式会社 | Data processing device |
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2010
- 2010-11-17 CN CN2010105644435A patent/CN102081298B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01105132A (en) * | 1987-10-19 | 1989-04-21 | Nippon Telegr & Teleph Corp <Ntt> | Infrared-light detector |
| JPH03164732A (en) * | 1989-11-24 | 1991-07-16 | Nippon Hoso Kyokai <Nhk> | Method for measuring optical characteristic of lens plate for stereoscopic display |
| JPH08185583A (en) * | 1994-12-28 | 1996-07-16 | Nippon Arefu:Kk | Detector |
| JPH11196307A (en) * | 1997-12-26 | 1999-07-21 | Sony Corp | Image pickup device |
| US6369688B1 (en) * | 1999-06-15 | 2002-04-09 | Matsushita Electric Works, Ltd. | Automatic gang switch having a heat ray sensor |
| JP2006084214A (en) * | 2004-09-14 | 2006-03-30 | Tokyo Tsushinki Kogyo Kk | Infrared detector |
| US20080252730A1 (en) * | 2007-04-10 | 2008-10-16 | Winfield Vision Development (Holding) Ltd. | Infrared sensitive security lighting system |
| CN101872106A (en) * | 2010-05-21 | 2010-10-27 | 深圳市艾威视数码科技有限公司 | Intelligent infrared camera and intelligent infrared light intensity adjustment method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081297A (en) * | 2010-11-17 | 2011-06-01 | 泉州市东南光电有限公司 | Device and method for testing switch threshold of infrared secondary light source of camera |
| CN102081297B (en) * | 2010-11-17 | 2013-02-13 | 泉州市东南光电有限公司 | Device and method for testing switch threshold of infrared secondary light source of camera |
Also Published As
| Publication number | Publication date |
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| CN102081298B (en) | 2012-06-06 |
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Effective date of registration: 20150911 Address after: 7-12A block, Zhi Tai Road, Quanzhou economic and Technological Development Zone, Fujian Patentee after: Quanzhou Southeast Photoelectric Co., Ltd. Address before: 362000 Fujian province Quanzhou city Qingmeng Technology Industrial Park incubator detai Road No. 1 business building five floor Patentee before: Quanzhou SouthEast Photoelectric Co., Ltd. |
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Granted publication date: 20120606 Termination date: 20181117 |