CN204810456U - Camera limiting resolving angle test system - Google Patents
Camera limiting resolving angle test system Download PDFInfo
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- CN204810456U CN204810456U CN201520249490.9U CN201520249490U CN204810456U CN 204810456 U CN204810456 U CN 204810456U CN 201520249490 U CN201520249490 U CN 201520249490U CN 204810456 U CN204810456 U CN 204810456U
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Abstract
The utility model relates to a camera limiting resolving angle test system mainly includes bromine tungsten filament lamp (1), stationary flow source (2), diaphragm (3), nearly infra -red filter (4), total mark ball (5), resolution ratio target (6) and collimator (7), wherein, install respectively on total mark ball (5) diaphragm (3) and nearly infra -red filter (4), total mark ball (5) are connected with resolution ratio target (6), and the one end in collimator (7) is installed in resolution ratio target (6). The utility model provides a camera limiting resolving angle test system is used for testing nearly infrared imaging product, provides scientific evidence and performance parameter for the detection.
Description
Technical field
The utility model relates to a kind of system for active near infrared imaging system performance testing, particularly relates to a kind of video camera limiting angle of resolution test macro, belongs to near-infrared optical field.
Background technology
In the process of imaging technique development, all the time along with the application of imaging system Performance Evaluation technology.From early stage scheme Design to research and development to the application in later stage, System Performance Analysis can provide various analysis data, the direction that the positioning problems in guidance system development, use procedure, solution are formulated and improved further.The simultaneously introducing of any new technology, new construction and new technology and employing, while lifting imaging system performance, also require that Performance Evaluation technology must constantly be improved, to be suitable for new demand.Adopt the active near infrared imaging system of new unit and new lighting technology no exception.
The field performance that imaging system Performance Evaluation comprises in the proper property assessment of imaging system and complex environment predicts the content of two aspects.In general, the performance evaluating imaging system has three kinds of methods: test method(s), simulation method and performance theory pattern law.The intuitive measurement results of test method(s), accurately, reliable, but, field test measurement is subject to the restriction of all many condition such as weather, place, result in Performance Evaluation process very inconvenient, particularly for needing often, the market of mass detection initiatively near infrared imaging system.Simulation method needs to possess expensive analogue system.Therefore, current research both domestic and external all concentrates on the predictability aspect of performance model substantially.
For the active near-infrared integrated camera of safety monitoring adopting near-infrared LED active illumination and CCD/CMOS imaging technique.But the performance parameter that the injection of handicraft workshop, the disappearance of industry standard mechanism all make the producer of the security protection industry being in the epoch of feudal lords vyiying for the throne mark when product export mostly is theoretical value, to embody the superior function of product as far as possible.But the operating distance of this series products, detection method that also unify both at home and abroad, standard.Therefore, for quality testing department, whether the operating distance how detecting this series products is qualified, reduces the dispute of producer and the consumer brought owing to not having examination criteria, and specification safety monitoring device fabrication market, is just of great practical significance.
Utility model content
In order to overcome the deficiencies in the prior art, resolving the problem of prior art, making up the deficiency of existing existing product in the market.
The utility model provides a kind of video camera limiting angle of resolution test macro, video camera limiting angle of resolution test macro mainly comprises bromine tungsten filament lamp, constant-current source, diaphragm, near infrared filter, integrating sphere, resolution target and parallel light tube, wherein, described diaphragm and near infrared filter are arranged on integrating sphere respectively, described integrating sphere is connected with resolution target, and resolution target is arranged on one end of parallel light tube.
Preferably, above-mentioned test macro also comprises video camera to be measured and display.
Preferably, the other end of above-mentioned parallel light tube aims at the camera of video camera to be measured.
Preferably, above-mentioned bromine tungsten filament lamp is connected with constant-current source.
The video camera limiting angle of resolution test macro that the utility model provides, for testing near infrared imaging product, provides evidence and the performance parameter of science for detecting.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is system principle diagram of the present utility model.
Reference numeral: 1-bromine tungsten filament lamp; 2-constant-current source; 3-diaphragm; 4-near infrared filter; 5-integrating sphere; 6-resolution target; 7-parallel light tube; 8-video camera to be measured; 9-display.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
If Fig. 1 is video camera limiting angle of resolution test macro of the present utility model,
Be illustrated in figure 2 the system principle diagram of video camera limiting angle of resolution test macro of the present utility model, wherein control analysis Systematical control infinity target generator, and infinity target generator is made up of constant-current source 2, near-infrared light source, diaphragm 3, integrating sphere 5, resolution target 6 and parallel light tube 7, infinity target generator is connected with camera system to be measured.
During the video camera limiting angle of resolution test macro work that the utility model provides, whole system is in darkroom.The equivalent light source that constant-current source, near-infrared light source, diaphragm and integrating sphere form is opened, connect with integrating sphere light-emitting window after automatic light source laid down by parallel light tube, video camera to be measured is placed on parallel light tube objective exit place, and automatic light source is closed, and display is connected with video camera to be measured.During proper testing, the diaphragm of the equivalent light source consisted of adjustment member 1 ~ 5 controls the irradiance on parallel light tube band target, makes it equal Eb, observes band target over the display and gathers image, can obtain distinguishable minimum fringes width.
The video camera limiting angle of resolution test macro that the utility model provides, for testing near infrared imaging product, provides evidence and the performance parameter of science for detecting.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection range of the present utility model.
Claims (4)
1. a video camera limiting angle of resolution test macro, it is characterized in that: described video camera limiting angle of resolution test macro mainly comprises bromine tungsten filament lamp (1), constant-current source (2), diaphragm (3), near infrared filter (4), integrating sphere (5), resolution target (6) and parallel light tube (7), wherein, described diaphragm (3) and near infrared filter (4) are arranged on integrating sphere (5) respectively, described integrating sphere (5) is connected with resolution target (6), and resolution target (6) is arranged on one end of parallel light tube (7).
2. video camera limiting angle of resolution test macro according to claim 1, is characterized in that: described test macro also comprises video camera to be measured (8) and display (9).
3. video camera limiting angle of resolution test macro according to claim 2, is characterized in that: the other end of described parallel light tube (7) aims at the camera of video camera to be measured (8).
4. video camera limiting angle of resolution test macro according to claim 1, is characterized in that: described bromine tungsten filament lamp (1) is connected with constant-current source (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520249490.9U CN204810456U (en) | 2015-04-19 | 2015-04-19 | Camera limiting resolving angle test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520249490.9U CN204810456U (en) | 2015-04-19 | 2015-04-19 | Camera limiting resolving angle test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810456U true CN204810456U (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520249490.9U Expired - Fee Related CN204810456U (en) | 2015-04-19 | 2015-04-19 | Camera limiting resolving angle test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204810456U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199379A (en) * | 2016-06-28 | 2016-12-07 | 南京理工大学 | Image co-registration circuit modulation transfer function test system |
| CN108020871A (en) * | 2017-12-11 | 2018-05-11 | 中国科学院长春光学精密机械与物理研究所 | aerial camera infrared imaging device dynamic imaging quality test device and test method |
-
2015
- 2015-04-19 CN CN201520249490.9U patent/CN204810456U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199379A (en) * | 2016-06-28 | 2016-12-07 | 南京理工大学 | Image co-registration circuit modulation transfer function test system |
| CN108020871A (en) * | 2017-12-11 | 2018-05-11 | 中国科学院长春光学精密机械与物理研究所 | aerial camera infrared imaging device dynamic imaging quality test device and test method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20160419 |