CN203115855U - Uniform illumination laser light source - Google Patents
Uniform illumination laser light source Download PDFInfo
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- CN203115855U CN203115855U CN2013200800012U CN201320080001U CN203115855U CN 203115855 U CN203115855 U CN 203115855U CN 2013200800012 U CN2013200800012 U CN 2013200800012U CN 201320080001 U CN201320080001 U CN 201320080001U CN 203115855 U CN203115855 U CN 203115855U
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- laser
- light
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- light source
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Abstract
The utility model relates to a uniform illumination laser light source which comprises a driving power source and a laser, and further comprises an optical diffusion sheet and a lens, wherein the optical diffusion sheet is used for scattering the light emitted by the laser, and the lens is used for controlling the angle of the emitted light. The laser is driven by the driving power source to emit the light, then the light is scattered by the optical diffusion sheet so as to enable uneven rectangular light spots emitted by the semiconductor laser to be changed into even circular light spots, the angle of the emitted light is controlled by adjusting the front and back positions of the lens, and the field angle of the emitted light can be matched with that of a pick-up lens to meet the requirements for lighting of different emitting distances (10-100m).
Description
Technical field
The utility model belongs to the LASER Light Source equipment technical field, is specifically related to a kind of even laser illuminator light source, namely a kind ofly leads passive, the disguised even LASER Light Source of illumination preferably, can be applicable on the night vision instrument.
Background technology
In the lll night vision technology, utilize the scene information that night, low-light can make the script human eye differentiate to become high-visible.But be subjected to the influence of weather, environment in actual applications, there is difference in the definition of imaging, for example the cloudy day night the field, ambient light illumination is low, the reflectivity of scene is low, this moment, imaging definition obviously descended, and in order to satisfy various working environment requirements, night observation device is many can install initiatively lighting apparatus.Be used for the night vision instrument of monitoring and security protection in the market, majority is that the infrared LED lamp is as the active light illumination.The LED light fixture has the characteristics that illumination is even, power consumption is little, the emission angle of visual field is big, cost is low, but red sudden and violent phenomenon is serious, is not suitable for particular job occasion that disguise is had relatively high expectations.And laser light source can reach hidden effect according to different wave bands and filtering technique processing, but laser light source self lacks even photoemissive characteristic, generally need carry out homogenize and handle.In the prior art, because the high coherence that laser has directly adopts the mode of optical fiber coupling to bring serious laser speckle; And adopt frosted glass homogenize mode hot spot comparatively even, but do not consider safe range and the disguised requirement of human eye.
Summary of the invention
The purpose of this utility model provides a kind of even laser illuminator light source, at the technical problem of existing Night Vision Illuminating Light Source, provide a kind of to eye-safe, disguised better, uniform LASER Light Source throws light on.
LASER Light Source of the present utility model includes driving power and laser instrument, also includes for the light that laser instrument is sent to carry out the optical diffusion sheet of scattering and be used for the lens of control emergent light angle.
Described laser instrument is semiconductor laser.
LASER Light Source of the present utility model also is equipped with filter plate in the place ahead of lens.
The wavelength of above-mentioned filter plate and the consistent wavelength of laser instrument.
Laser instrument of the present utility model is after the driving power driving is luminous, through the optical diffusion sheet scattering, the inhomogeneous rectangular light spot that semiconductor laser is sent becomes uniform circular light spot, and, by regulating the front and back position control emergent light angle of lens, make the angle of visual field of emergent light mate the illumination that to satisfy different irradiation distances (10-100m) with the angle of visual field of pick-up lens.
Description of drawings
Fig. 1: the structural representation of the utility model light source (including the light path signal)
Fig. 2: scheme of installation of the present utility model.
Wherein: 1, driving power 2, laser instrument 3, optical diffusion sheet 4, lens 5, filter plate 6, mount pad.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, the laser light-source device of even illumination of the present utility model, its composition comprises: laser instrument 2, optical diffusion sheet 3, lens 4 and filter plate 5.Described laser instrument 2 can be screwed in the rearmost end of machinery tube for having the semiconductor laser of power drives, reserves the connection that aperture carries out power line behind the machinery tube.Being used for the luminous driving power 1 of drive laser is dc source, and the wavelength of laser instrument 2 is LONG WAVE INFRARED light, and intensity and wave band are in the eye-safe range of receiving.The fast axle of semiconductor laser is about 32 °, and slow axis is about 9 °, and calculating propagation distance is the diameter of the spot size selection optical diffusion sheet 3 behind the L.3 back scatterings become uniform hot spot to light beam through optical diffusion sheet, this moment, the angle of emergence was bigger, angle through the last outgoing of lens 4 controls, (angle of visual field of emergent light is optimum Match greater than angle of visual field 2-3 ° of pick-up lens to make the angle of visual field coupling of the angle of visual field of emergent light and pick-up lens, neither waste light energy, again can full and uniform illumination in the pick-up lens angle of visual field).By regulate the focal length of lens and diffuser plate and lenticular spacing from, can satisfy different pick-up lens visual field and throw light on and different illumination distances requirement.In the place ahead of lens 4 filter plate 5 is installed, the wavelength of filter plate 5 and laser wavelength coupling are eliminated red sudden and violent phenomenon after the filtering.Above-mentioned laser instrument 2, optical diffusion sheet 3, lens 4 and filter plate 5 are installed together (Fig. 2) by mount pad 6.
Claims (4)
1. an even laser illuminator light source includes driving power (1) and laser instrument (2), it is characterized in that, also includes for the light that laser instrument (2) is sent to carry out the optical diffusion sheet (3) of scattering and be used for the lens (4) of control emergent light angle.
2. LASER Light Source as claimed in claim 1 is characterized in that described laser instrument (2) is semiconductor laser.
3. LASER Light Source as claimed in claim 1 is characterized in that the place ahead of described lens (4) is equipped with filter plate (5).
4. LASER Light Source as claimed in claim 3 is characterized in that the consistent wavelength of wavelength and the laser instrument (2) of described filter plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200800012U CN203115855U (en) | 2013-02-20 | 2013-02-20 | Uniform illumination laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200800012U CN203115855U (en) | 2013-02-20 | 2013-02-20 | Uniform illumination laser light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115855U true CN203115855U (en) | 2013-08-07 |
Family
ID=48896194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200800012U Expired - Lifetime CN203115855U (en) | 2013-02-20 | 2013-02-20 | Uniform illumination laser light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203115855U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404079A (en) * | 2014-09-09 | 2016-03-16 | 山东华光光电子有限公司 | Semiconductor laser lighting module with multiple divergence angles |
| CN105607387A (en) * | 2015-12-25 | 2016-05-25 | 深圳乐行天下科技有限公司 | Depth camera lighting system |
| CN109814270A (en) * | 2019-03-25 | 2019-05-28 | 中国科学院上海光学精密机械研究所 | Laser output light spatial coherence inhibits device |
| CN110320728A (en) * | 2019-07-09 | 2019-10-11 | 林璧光 | A kind of light-emitting angle can multi-gear adjustment LED photography luminaire |
-
2013
- 2013-02-20 CN CN2013200800012U patent/CN203115855U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404079A (en) * | 2014-09-09 | 2016-03-16 | 山东华光光电子有限公司 | Semiconductor laser lighting module with multiple divergence angles |
| CN105607387A (en) * | 2015-12-25 | 2016-05-25 | 深圳乐行天下科技有限公司 | Depth camera lighting system |
| CN109814270A (en) * | 2019-03-25 | 2019-05-28 | 中国科学院上海光学精密机械研究所 | Laser output light spatial coherence inhibits device |
| CN110320728A (en) * | 2019-07-09 | 2019-10-11 | 林璧光 | A kind of light-emitting angle can multi-gear adjustment LED photography luminaire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
|
| CX01 | Expiry of patent term |