CN204119352U - Initiatively near-infrared photography system - Google Patents
Initiatively near-infrared photography system Download PDFInfo
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- CN204119352U CN204119352U CN201420433041.5U CN201420433041U CN204119352U CN 204119352 U CN204119352 U CN 204119352U CN 201420433041 U CN201420433041 U CN 201420433041U CN 204119352 U CN204119352 U CN 204119352U
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- infrared
- photography system
- initiatively
- objective lens
- searchlight
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Abstract
The utility model relates to a kind of initiatively near-infrared photography system, initiatively near-infrared photography system comprises objective lens (1), infrared imaging assembly (2), eyepiece group (3) and infrared searchlight (4), described objective lens (1), infrared imaging assembly (2) and eyepiece group (3) from target (5) to human eye (6) rectilinear direction set gradually, described infrared searchlight (4) aims at the mark (5).The active near-infrared photography system that the utility model provides have employed near infrared laser or great power LED, initiatively can photograph near infrared band, have extensive use in many fields such as traffic, safety monitoring.
Description
Technical field
The utility model relates to a kind of system for near-infrared shooting, particularly relates to a kind of initiatively near-infrared photography system, belongs to infrared imaging field.
Background technology
Photo electric imaging system, according to or without lighting source, is divided into Active Imaging and passive imaging system two kinds of modes.Imaging and passive imaging itself is without lighting source, and rely on target or Ambient natural daylight or self radiation, image device accepts small-signal imaging.Active imaging system utilizes artificially lighting mode, and adopt optical radiation source active illumination, imaging detector accepts the catoptric imaging of scenery to active illumination light.
Complete active near infrared imaging system performance testing should comprise two parts: system carries the limiting performance test of near-infrared light source performance test and imaging system.Initiatively near infrared imaging system is to carry the integrated camera of near-infrared LED light source, and such video camera operating distance is general larger, can reach hundreds of rice.Adopt its operating distance index of the method for outdoor actual measurement detection very inconvenient.
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 initiatively near-infrared photography system, initiatively near-infrared photography system comprises objective lens, infrared imaging assembly, eyepiece group and infrared searchlight, described objective lens, infrared imaging assembly and the rectilinear direction of eyepiece group between target to human eye set gradually, and described infrared searchlight aims at the mark.
Preferably, above-mentioned objective lens comprises multiple convex lens, concavees lens and condenser.
Preferably, above-mentioned infrared searchlight is near infrared laser.
Preferably, above-mentioned infrared imaging device is image device or the gleam image intensifier part of Si-CCD/CMOS.
The active near-infrared photography system that the utility model provides have employed near infrared laser or great power LED, initiatively can photograph near infrared band, have extensive use in many fields such as traffic, safety monitoring.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Reference numeral: 1-objective lens; 2-infrared imaging device; 3-eyepiece group; 4-infrared searchlight; 5-target; 6-human eye.
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.
Be active near-infrared photography system of the present utility model as shown in Figure 1, critical piece comprises near infrared illumination source, object lens, near infrared imaging device and eyepiece etc., has extensive use in many fields such as traffic, safety monitoring.Lighting source mainly adopts near infrared laser or great power LED.At present usually select the image device of Si-CCD/CMOS or gleam image intensifier part (gleam image intensifier and strengthen ICCD device) in the imaging system of near infrared band, service band is in the near infrared spectrum district of 0.76 ~ 1.1 μm.
The observation of the nearly red imaging system of active to target is a subjective process, needs the participation of human eye.The visual detection of human eye in certain background, target is identified.Now, the brightness of the bright and sharp degree of the vision of human eye and background and the contrast of target in background relevant.The contrast of target represents with contrast C, namely
In formula, L
tand L
bbe respectively the brightness of target and background.
Background luminance L
b, there is restricting relation (Wald law) between contrast C and the human eye target subtended angle α that can detect, particularly when target subtended angle α < 7 ', have
L
b·C
2·α
2＝const
Namely famous Rose law.If during α < 1 ', be just difficult to observe target.
From (2) formula, under certain condition, as background luminance L
b, target and background contrast C when determining, the discernmible minimum target subtended angle of human eye is also determined thereupon.
The active near-infrared photography system that the utility model provides have employed near infrared laser or great power LED, initiatively can photograph near infrared band, have extensive use in many fields such as traffic, safety monitoring.
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. an active near-infrared photography system, it is characterized in that: described active near-infrared photography system comprises objective lens (1), infrared imaging assembly (2), eyepiece group (3) and infrared searchlight (4), described objective lens (1), infrared imaging assembly (2) and eyepiece group (3) from target (5) to human eye (6) rectilinear direction set gradually, described infrared searchlight (4) aims at the mark (5).
2. active near-infrared photography system according to claim 1, is characterized in that: described objective lens (1) comprises multiple convex lens, concavees lens and condenser.
3. active near-infrared photography system according to claim 2, is characterized in that: described infrared searchlight (4) is near infrared laser.
4. active near-infrared photography system according to claim 1, is characterized in that: described infrared imaging device is image device or the gleam image intensifier part of Si-CCD/CMOS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433041.5U CN204119352U (en) | 2014-07-29 | 2014-07-29 | Initiatively near-infrared photography system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433041.5U CN204119352U (en) | 2014-07-29 | 2014-07-29 | Initiatively near-infrared photography system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204119352U true CN204119352U (en) | 2015-01-21 |
Family
ID=52336627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420433041.5U Expired - Fee Related CN204119352U (en) | 2014-07-29 | 2014-07-29 | Initiatively near-infrared photography system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204119352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168428A (en) * | 2014-07-29 | 2014-11-26 | 奉化市宇创产品设计有限公司 | Active near-infrared photographing system |
-
2014
- 2014-07-29 CN CN201420433041.5U patent/CN204119352U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168428A (en) * | 2014-07-29 | 2014-11-26 | 奉化市宇创产品设计有限公司 | Active near-infrared photographing 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20180729 |