CN203827433U - Wide angle fixed focus laser night vision device - Google Patents
Wide angle fixed focus laser night vision device Download PDFInfo
- Publication number
- CN203827433U CN203827433U CN201420260357.9U CN201420260357U CN203827433U CN 203827433 U CN203827433 U CN 203827433U CN 201420260357 U CN201420260357 U CN 201420260357U CN 203827433 U CN203827433 U CN 203827433U
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- laser
- laser illuminator
- angle
- light
- plain film
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Abstract
The utility model provides a wide angle fixed focus laser night vision device which comprises a camera, a fixed focus lens, and a laser illuminator. The front end of the laser illuminator is provided with a light sparing flat sheet. The light sparing flat sheet spreads illuminating laser rays from the laser illuminator. The two surfaces of the light sparing flat sheet are a smooth surface and a frosted surface; the smooth surface faces the laser illuminator while the frosted surface faces outside. The light spreading capability from the frosted surface of the light sparing flat sheet increases from the edges to the heart. The adoption of a fixed focus lens meets the requirement of wide angle state monitoring and at the same time effectively reduces costs. Since the light spreading capability from the frosted surface of the light sparing flat sheet increases from the edges to the heart, the problem in the prior art that the heart of a laser illuminator is bright while its circumference is dark gets solved; therefore, pictures captured by a night vision device are clearer ones.
Description
Technical field
The utility model relates to a kind of wide-angle and focuses laser night-vision device, in particular, relates in particular to the uniform wide-angle of a kind of laser lighting hot spot brightness and focuses laser night-vision device.
Background technology
For the concrete application of night vision monitoring field laser night vision product, closely laser lighting is applicable to wide-angle and focuses illumination, can observe that the angle of visual field is large, the wider effect in laser lighting region.Compared with closely throwing light on infrared lamp, exist illumination distances far away, the advantage that the life-span is long.For the night vision device of continuous vari-focus, under wide-angle state, can search in the larger context target, under long burnt state, can among a small circle, target be locked, be followed the tracks of and examine, the cost of night vision device with continuous vari-focus function is relatively high.And only need under the large angle of visual field, observe in some occasion, if adopt the night vision device of continuous vari-focus can increase undoubtedly cost.
Laser illuminator is the necessaries that ensures that night vision device was monitored at night, because the rising angle of laser illuminator is generally smaller, want to obtain the hot spot that dispersion angle is larger, the light that need to utilize even smooth plain film to send laser illuminator is dispersed processing, to realize the illumination under wide-angle state to night vision device.Simultaneously; because the illumination of laser illuminator exists the Gaussian Profile feature of " middle bright, surrounding is dark "; therefore the image that laser night-vision device obtains has the feature of " centre is clear, surrounding is dark "; often can cause the monitored object at position, None-identified edge, monitoring is caused to adverse effect.
Summary of the invention
The utility model, in order to overcome the shortcoming of above-mentioned technical problem, provides the uniform wide-angle of a kind of laser lighting hot spot brightness to focus laser night-vision device.
Wide-angle of the present utility model focuses laser night-vision device, comprise video camera, tight shot and laser illuminator, tight shot is in wide-angle state for receiving and focus on the light that object sends, and video camera is for generation of image information, and laser illuminator carries out light filling illumination at night; Its special feature is: the front end of described laser illuminator is provided with even smooth plain film, and the laser illuminator that even smooth plain film sends laser illuminator is dispersed processing; Two surfaces of described even smooth plain film are respectively shiny surface and frosting, and the shiny surface of even smooth plain film is towards laser illuminator, and frosting is towards the external world; The frosting of described even smooth plain film is strengthened the ability of dispersing of laser gradually by edge to center.
Tight shot is in wide-angle state, for receiving light and it being focused on; Light signal is converted into the signal of telecommunication by video camera, and produce video signal.The in the situation that of ambient lighting deficiency, utilize laser illuminator to carry out additional illumination.The laser illuminator that even smooth plain film produces laser illuminator is dispersed processing, to meet the illumination of night vision device under wide-angle wide-angle state.Because the frosting of even smooth plain film is strengthened the ability of dispersing of laser gradually by edge to center, hot spot is without obvious border, and the picture that night vision device is gathered is more clear.
Wide-angle of the present utility model focuses laser night-vision device, and the rising angle of described laser illuminator is not less than 8 °, and laser illuminator is not less than 60 ° through the even smooth plain film angle of divergence after treatment.The laser illuminator that even smooth plain film is 8 ° by rising angle transforms the divergencing laser for 60 °, is conducive to the laser lighting under wide-angle.
Wide-angle of the present utility model focuses laser night-vision device, and on the frosting of described even smooth plain film, the density of particle is increased gradually by edge to center.On frosting, the density of particle is increased gradually by edge to center, has realized frosting and by edge to center, the ability of dispersing of laser has been strengthened gradually.
The beneficial effects of the utility model are: wide-angle of the present utility model focuses laser night-vision device, by even smooth plain film is set at the front end of laser illuminator, the shiny surface of even smooth plain film is towards laser illuminator, and its frosting is strengthened the ability of dispersing of laser gradually by edge to center, make surrounding and the edge of picture that night vision device gathers have unified brightness, picture is more clear.
Meanwhile, because the rising angle of laser illuminator is not less than 8 °, laser illuminator is not less than 60 ° through the even smooth plain film angle of divergence after treatment, is conducive to realize wide-angle illumination.Because the density of particle on frosting is increased gradually by edge to center, ensure the disperse function of even smooth plain film to laser.
Brief description of the drawings
Fig. 1 is the schematic diagram that wide-angle of the present utility model focuses laser night-vision device;
Fig. 2 is the fundamental diagram of laser illuminator in the utility model;
Fig. 3 is the structure chart of even smooth plain film in the utility model;
Fig. 4 is the structure chart of the frosting of even optical plane.
In figure: 1 video camera, 2 tight shots, 3 laser illuminators, 4 laser illuminators, 5 even smooth plain films, 6 shiny surfaces, 7 frostings.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, provided wide-angle of the present utility model and focus the schematic diagram of laser night-vision device, it comprises video camera 1, tight shot 2, laser illuminator 3, even smooth plain film 5; Shown tight shot 2 is positioned at the front end of video camera 1, for receiving the light that external object sends and it being focused on, is tight shot due to what adopt, meets the requirement under wide-angle wide-angle monitoring condition, has also effectively saved cost.Light signal is converted into vision signal by video camera 1, realizes the monitoring to scene in visual field.
Laser illuminator 3 is for generation of laser illuminator 4, and even smooth plain film 5 is arranged at the front end of laser illuminator 3, for laser illuminator 4 is dispersed to processing, to produce the laser lighting hot spot being suitable in wide-angle wide-angle situation.As shown in Figure 3 and Figure 4, provided the structural representation of even smooth plain film 5, the two sides of shown even smooth plain film 5 are respectively shiny surface 6 and frosting 7, and shiny surface 6 is towards laser illuminator 3, and frosting 7 is towards the external world.The frosting of even smooth plain film 5 is strengthened the ability of dispersing of laser gradually by edge to center, and it can be increased to realize by edge to center by the density of particle on the frosting of even smooth plain film 57 gradually.
There is Gaussian Profile in the laser illuminator 4 sending due to laser illuminator 3, in the middle of, bright limb is dark, and wide-angle circular light spot after even smooth plain film 5 is dispersed is without obvious border, in the time that wide-angle wide-angle is thrown light on, middle bright a little part can be seen distantly, and gradual change darker part in edge can be taken into account the part compared with wide-angle nearby.Meanwhile, because even light and the wide-angle of even smooth plain film 5 are dispersed, night vision illumination hot spot visually can not find out that the gradual change level of obvious light spot energy changes, and has ensured the definition of monitored picture, and this to night vision monitoring highly significant.
As shown in Figure 2, provided the fundamental diagram of laser illuminator, the rising angle of laser illuminator 3 is not less than 8 °, and laser illuminator 4 is not less than 60 ° through even smooth plain film 5 angle of divergence after treatment, is conducive to like this form satisfactory illumination hot spot.
Claims (3)
1. a wide-angle focuses laser night-vision device, comprise video camera (1), tight shot (2) and laser illuminator (3), tight shot is in wide-angle state for receiving and focus on the light that object sends, and video camera is for generation of image information, and laser illuminator carries out light filling illumination at night; It is characterized in that: the front end of described laser illuminator (3) is provided with even smooth plain film (5), the laser illuminator (4) that even smooth plain film sends laser illuminator is dispersed processing; Two surfaces of described even smooth plain film are respectively shiny surface (6) and frosting (7), and the shiny surface of even smooth plain film is towards laser illuminator, and frosting is towards the external world; The frosting of described even smooth plain film is strengthened the ability of dispersing of laser gradually by edge to center.
2. wide-angle according to claim 1 focuses laser night-vision device, it is characterized in that: the rising angle of described laser illuminator (3) is not less than 8 °, and laser illuminator (4) is not less than 60 ° through even smooth plain film (5) angle of divergence after treatment.
3. wide-angle according to claim 1 and 2 focuses laser night-vision device, it is characterized in that: the density of the upper particle of frosting (7) of described even smooth plain film (5) is increased gradually by edge to center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260357.9U CN203827433U (en) | 2014-05-21 | 2014-05-21 | Wide angle fixed focus laser night vision device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260357.9U CN203827433U (en) | 2014-05-21 | 2014-05-21 | Wide angle fixed focus laser night vision device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827433U true CN203827433U (en) | 2014-09-10 |
Family
ID=51482887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260357.9U Expired - Fee Related CN203827433U (en) | 2014-05-21 | 2014-05-21 | Wide angle fixed focus laser night vision device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827433U (en) |
-
2014
- 2014-05-21 CN CN201420260357.9U patent/CN203827433U/en not_active Expired - Fee Related
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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: 20140910 Termination date: 20170521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |