CN108983531A - A kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared - Google Patents
A kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared Download PDFInfo
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- CN108983531A CN108983531A CN201810990094.XA CN201810990094A CN108983531A CN 108983531 A CN108983531 A CN 108983531A CN 201810990094 A CN201810990094 A CN 201810990094A CN 108983531 A CN108983531 A CN 108983531A
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- 239000011521 glass Substances 0.000 title claims abstract description 46
- 238000001228 spectrum Methods 0.000 title claims abstract description 38
- 239000012528 membrane Substances 0.000 title claims abstract description 31
- 238000009738 saturating Methods 0.000 title claims abstract description 24
- 239000004065 semiconductor Substances 0.000 claims abstract description 69
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000000295 emission spectrum Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 2
- 230000003760 hair shine Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 2
- 238000003384 imaging method Methods 0.000 abstract description 15
- 230000003595 spectral effect Effects 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004297 night vision Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
- G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/08—Trick photography
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0078—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for frequency filtering
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Closed-Circuit Television Systems (AREA)
- Studio Devices (AREA)
- Blocking Light For Cameras (AREA)
Abstract
The invention discloses a kind of saturating glass permeable membrane cameras of the narrow light spectrum image-forming of all-weather infrared, camera is by infrared semiconductor laser, narrow band filter, camera lens, CCD camera is composed, infrared semiconductor laser includes the semiconductor optical amplifier chip set gradually, collimation lens, phase compensation piece, volume Bragg grating, optoisolator, semiconductor optical amplifier chip, Bragg grating forms resonant cavity, exocoel frequency-selecting element of the Bragg grating as infrared semiconductor laser, semiconductor optical amplifier chip provides gain, and Bragg grating is high-diffraction efficiency, the Bragg grating of narrow bandwidth is so that laser exports narrow-linewidth laser.Using CCD camera and infrared semiconductor laser combined imaging, round-the-clock glass permeable membrane high definition imaging function may be implemented, using narrow spectral laser device light filling, infrared laser can penetrate glass and take pictures to personnel's light filling in interior or room, assist in traffic control department and implement traffic monitoring, early warning and reconnaissance and candid photograph violating the regulations.
Description
Technical field
The present invention relates to monitoring camera technical field, especially a kind of saturating glass permeable membrane camera shooting of the narrow light spectrum image-forming of all-weather infrared
Machine.
Background technique
Sunlight spectrum introduction: the sunlight spectral wavelength ranges for reaching earth surface are mainly 0.295~2.5 μm (micro-
Rice), i.e. 295nm~2500nm (nanometer) is broadly divided into ultra-violet (UV) band (less than 0.4 micron), (0.4 micron -0.75 is micro- for visible region
Rice) and infrared region (greater than 0.75 micron), wherein visible region accounts for about the 50% of solar radiation gross energy, infrared region about 43%,
Ultra-violet (UV) band about 7%.Human eye response wave-length coverage is visible region.
Cutoff filter introduction: video camera CCD sensitive volume is 350-1050 nanometers, to 750-1050 nanometer range
Interior infrared light has induction, and the eyes of our mankind can't see infrared light, the in this way image after CCD incudes
It is distinguishing with the image that our eyes are seen, for example green becomes the colors colour cast phenomenon such as grey, so common color is taken the photograph
An infrared fileter (film) is pasted on camera CCD, to filter or end infrared light and correct colour cast phenomenon, make image become with
The consistent image that our eyes are seen.This optical filter for being used to filter or end infrared light is referred to as IR cut filter
Piece.
Monitor camera optical filter and working principle: when video camera works by day, using cutoff filter, in order to mention
Image color quality is risen, infrared light is needed to filter out.When working at night, need with infrared light supply (include: infrared LED, it is infrared
Laser, infrared lamp etc.) light filling can just have night vision function, it is necessary to cutoff filter is removed, be changed to can penetrate it is infrared
The optical filter of light could make infrared light enter CCD.It is this to be referred to as full impregnated spectral filter through the optical filter of infrared light.
In the daytime automatically switched with night using double optical-filter switchers.Double optical-filter switcher principles are by one piece of circuit control panel
And switch, when the light on daytime is abundant, circuit control panel, which drives, is switched to cutoff filter work in switch,
CCD restores true color, and when night insufficient light, cutoff filter is removed automatically, and full impregnated spectral filter starts
Work, can incude the auxiliary light of evening infrared lamp, CCD is made to make full use of all light, to substantially increase infrared photography
The low of machine shines performance, entire picture clear and natural.
Cutoff filter transparent wavelength range is 400-750nm, the i.e. light of this wave band transmitance with higher
(referring generally to be greater than 30%), other wave band transmitances are very low (referring generally to less than 1%).Full impregnated spectral filter transparent wavelength range
For 400-1050nm.
General optical filter, transparent wavelength range (i.e. bandwidth) are greater than 50nm.Cutoff filter transparent wavelength range
For 400-750nm, bandwidth is about 750nm-400nm=350nm
The transparent wavelength range of narrow band filter generally only has tens nanometers of even several nanometers.It is with peak wavelength
The narrow band filter of 808nm, transmitance halfwidth 20nm are to arrange, the transmitance with higher within the scope of 798nm-818nm,
The light transmission rate of its wavelength is very low.If the narrow band filter peak wavelength of design is 808nm, transmitance halfwidth is 10nm,
The transmitance with higher within the scope of 803nm-813nm, the light transmission rate of other wavelength are very low.
Semiconductor laser, which exports laser spectrum, can generate drift with variation of ambient temperature, with 850nm semiconductor laser
For, temperature drift is about 0.32nm/ DEG C, and when temperature is increased to 30 DEG C by 20 DEG C, output spectrum occurs with the raising of operating temperature
Apparent drift, peak wavelength drift to 853.3nm by 850nm.
Common monitor camera mostly uses double optical-filter switchers, switches to cutoff filter daytime, night adopts
With white light LEDs or infrared LED light filling, optical filter is switched to full impregnated spectral filter.Mainly by double optical-filter switchers, camera lens,
CCD and white light LEDs (or infrared LED) are constituted.
Laser night-vision device is mainly night using the illumination imaging of infrared laser light filling, free of light filter.Mainly by laser light filling
Light source, camera lens, CCD are constituted.
General-utility car pad pasting or coated glass are relatively low to visible light transmittance, to infrared light transmitance with higher.
Existing video camera cannot shoot occupant's high definition photo through vehicle window in backlight on daytime, cannot especially penetrate
Dark pad pasting side window glass shoots occupant's high definition photo；Equally, fraction of laser light night vision device or laser imaging apparatus, use are narrow
Band optical filter is combined with semiconductor infrared laser, also can be realized the shooting of glass permeable membrane.But since semiconductor laser is by ring
Border temperature influences, and transmitting laser spectral peak wavelength can vary with temperature and wave length shift occurs.Only emit laser light spectral peak
It is worth wavelength when narrow band filter is through in wave-length coverage, can just there is preferable glass permeable membrane imaging effect thoroughly.If daytime in summer
Saturating glass permeable membrane imaging effect is poor when high temperature or winter low temperature.If semiconductor laser does not use spectrum frequency stabilization measure,
Stable saturating glass permeable membrane imaging effect cannot be formed.
Summary of the invention
Purpose of design of the present invention is: in view of the deficiency of prior art condition, we, which design, proposes that a kind of all-weather infrared is narrow
The saturating glass permeable membrane video camera of light spectrum image-forming, is not influenced by various light, can under strong sunlight disturbed condition on daytime, night it is various
Under light disturbed condition or under the conditions of night is completely black, the high definition photo of personnel in interior or room is obtained through glass, not by glass
Glass pad pasting or coating influence.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared, the video camera by infrared semiconductor laser,
Narrow band filter, camera lens, CCD camera are composed.The infrared semiconductor laser can with other part integrations,
It split type can be applied in combination, the infrared semiconductor laser can be one, be also possible to more, the infrared semiconductor
Laser includes the infrared semiconductor laser diode set gradually, reflective volume Bragg grating, infrared semiconductor laser two
The outgoing light direction and volume Bragg grating of pole pipe feed back light direction on the same line, but contrary, and the two constitutes
Linear type exocoel infrared semiconductor laser.The infrared semiconductor laser diode, volume Bragg grating form resonant cavity, institute
Exocoel frequency-selecting element of the volume Bragg grating as infrared semiconductor laser is stated, semiconductor laser output spectrum can be compressed
Line width simultaneously improves spectrum stability.
The outgoing light direction and body grating of semiconductor laser diode feed back light direction on the same line, but direction phase
Instead, the two constitutes linear type exocoel infrared semiconductor laser.Volume Bragg grating is as the outer of infrared semiconductor laser
Chamber frequency-selecting element can compress semiconductor laser output spectrum line width and improve spectrum stability.Therefore, the infrared of output is swashed
Light penetrates pad pasting or coated glass, and to personage's light filling in interior or room, infrared laser is again passed through pad pasting after personage is reflected
Or coated glass, through lens imaging to CCD camera.
Further, the infrared semiconductor laser diode can be common infra-red laser diode, be also possible to hang down
Straight cavity surface-emitting laser diode (VCSEL laser), output wavelength preferred 808nm, 850nm, 880nm, 940nm common half
Conductor Laser output wavelength.
Further, the narrow band filter, transparent wavelength range are less than 30nm, can eliminate various exterior light interference,
Including sunlight and night lights, narrow band filter light transmission peak wavelength preferred 808nm, 850nm, 880nm, 940nm are common
Near-infrared semiconductor laser exports peak value spectrum, and the narrow band filter can respectively fill one group before and after camera lens, can also only exist
Install one group in camera lens above or below.
Further, the infrared semiconductor laser Emission Spectrum Peals wavelength is the narrow band filter light transmitting wavelength
Laser in range, the infrared semiconductor laser emission spectrum halfwidth are less than the narrow band filter light transmitting wavelength band
It is wide.
Further, the linear type exocoel infrared semiconductor laser that the volume Bragg grating is formed becomes in environment temperature
When change (- 10 degrees Celsius~50 degrees Celsius), the peak wavelength drift value of laser spectrum is exported less than 2 nanometers.
Further, the infrared semiconductor laser working method can be to be always on, or external trigger pulse hair
Light.
As further scheme, the semiconductor laser diode rear end of the infrared semiconductor laser be equipped with radiator and
Electric heater, summer start radiator heat-dissipation, the heating of winter starting electric heater.
Compared with prior art, implement the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared of the invention, has
Have following
The utility model has the advantages that
1. glass (including coated glass, pad pasting glass) can be penetrated using infrared laser to mend personnel in interior or room
Photo-beat is shone or camera shooting；
2. using narrow band filter, various exterior light interference, including sunlight and night various light can be eliminated；Narrowband
Optical filter light transmitting wavelength bandwidth is narrower, and the ability for eliminating various external disturbance light is stronger, and saturating glass permeable membrane imaging effect is better.
3. carrying out semiconductor laser frequency stabilization using volume Bragg grating, when ensure that variation of ambient temperature, not will lead to red
Outside outer semiconductor laser Emission Spectrum Peals wave length shift to narrow band filter transparent wavelength range, to ensure that glass is saturating
The stability of film imaging assists in traffic control department and implements traffic monitoring, early warning and reconnaissance and candid photograph violating the regulations or image scouting.
4. carrying out semiconductor laser frequency stabilization using volume Bragg grating, in variation of ambient temperature, (- 10 degrees Celsius~50 are taken the photograph
Family name's degree), the peak wavelength drift value for exporting laser spectrum is less than ± 2 nanometers, so as to use light transmitting wavelength bandwidth for 5~
The narrow band filter of 30nm can produce extraordinary glass permeable membrane imaging effect using the narrow band filter of 5nm bandwidth, use
The narrow band filter of 30nm bandwidth can produce preferable glass permeable membrane imaging effect thoroughly；
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.
Fig. 1 is the schematic diagram of the infrared narrow saturating glass permeable membrane video camera of light spectrum image-forming of the present invention；
Fig. 2 is the schematic diagram of internal structure of the infrared narrow saturating glass permeable membrane video camera of light spectrum image-forming of the present invention；
Fig. 3 is the structural schematic diagram of infrared semiconductor laser of the present invention；
Fig. 4 is the effect picture that the common camera of the embodiment of the present invention 1 is shot；
Fig. 5 is the shooting effect figure of the infrared narrow saturating glass permeable membrane video camera of light spectrum image-forming of the embodiment of the present invention 1；
Fig. 6 is that the vehicle forward sight of the embodiment of the present invention 2 shoots contrast effect figure；
Fig. 7 is that the vehicle side view of the embodiment of the present invention 2 shoots contrast effect figure；
Wherein, 1- narrow band filter I, 2- camera lens, 3- narrow band filter II, 4-CCD video camera, 5- radiator, 6- are infrared
Semiconductor laser, 61- infrared semiconductor laser diode, 62- volume Bragg grating, 63- electric heater, 64- radiator,
7- shell, 8- rack, 9- data connection head.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Fig. 1-3 is please referred to, the present invention proposes a kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared, the camera shooting
Machine is composed of infrared semiconductor laser 6, narrow band filter (1,3), camera lens 2, CCD camera 4, the infrared semiconductor
Laser 6 includes semiconductor laser chip 61, volume Bragg grating 62, electric heater 63, the radiator 64 set gradually, described
Semiconductor optical amplifier chip 61, volume Bragg grating 62 form linear type external cavity semiconductor laser, the bragg volume light
Exocoel frequency-selecting element of the grid 62 as narrow linewidth semiconductor laser makes laser export narrow-linewidth laser, the bragg volume
Grating 62 is used as spectrum frequency stabilization element, stablizes laser output light spectrum.
Further embodiment is the preferably reflective volume Bragg grating of the volume Bragg grating, semiconductor laser
The outgoing light direction and volume Bragg grating of diode feed back light direction on the same line, but contrary, and the two is constituted
Linear type exocoel infrared semiconductor laser.Ante-chamber of the volume Bragg grating as infrared semiconductor laser resonant cavity
Mirror, a part of diffraction light return the semiconductor laser diode chip through frequency-selecting back reflection and form laser resonance, penetrate after fold-back
Volume Bragg grating forms outgoing infrared laser.
Further embodiment is that the linear type exocoel infrared semiconductor laser exports laser spectrum central wavelength
It is determined, is influenced by temperature change very small by the parameter of volume Bragg grating.
Further embodiment is that the infrared laser of the linear type exocoel infrared semiconductor laser output is through patch
Film or coated glass, to personage's light filling in interior or room, infrared laser is again passed through pad pasting or plated film glass after personage is reflected
Glass, through lens imaging to CCD camera.
Further embodiment is that the narrow band filter eliminates various exterior light interference, including sunlight and night
Various light only allow infrared laser to enter CCD camera imaging, to realize that glass permeable membrane high definition is imaged.
Embodiment 1:
The present embodiment is scene 1: at noon, reversible-light shooting, headstock is northwards.
Camera lens mounting means: 6 meters of height, cross bar, color high-definition video camera and infrared glass permeable membrane video camera
Identical place, same time shooting, contrast effect is refering to Fig. 4, Fig. 5:
It can be seen that the occupant's fogging image photographed using common camera (it is soft to be not enough to people's progress face identification in Fig. 4
Part identification) it even claps completely less than occupant's image, back sunray is dark, can not obtain the environment inside car being more clear；
And Fig. 5 is reviewed, clearly may be used using passenger inside the vehicle's facial image that the infrared narrow saturating glass permeable membrane video camera of light spectrum image-forming can take
See, can achieve face recognition software identification condition, copilot passenger, which does not fasten one's safety belt, also to be arrived by candid photograph, especially passenger
Sunglasses are worn, still can realize ocular imaging through sunglasses.
Embodiment 2:
The present embodiment is scene 2: certain unit entrance.
Camera lens mounting means: 1.7 meters of height, upright bar, color high-definition video camera and infrared glass permeable membrane video camera
Identical place, same time shooting, contrast effect please refer to Fig. 6, Fig. 7:
Common camera can not obtain interior personage's high-definition image through side window dark color pad pasting glass, can't see completely.
Using the infrared narrow saturating glass permeable membrane camera shooting function of light spectrum image-forming through front vehicle window and dark pad pasting side vehicle window, obtain
Interior personage's high-definition image can achieve face recognition software identification condition.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
It makes a variety of changes, modify, replacement and variant, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared, it is characterised in that: the video camera is partly led by infrared
Body laser, narrow band filter, camera lens, CCD camera are composed, and the infrared semiconductor laser can be with other components
Integration split type can also be applied in combination, and the infrared semiconductor laser can be one, be also possible to more, described
Infrared semiconductor laser includes the infrared semiconductor laser diode set gradually, reflective volume Bragg grating, infrared by half
The outgoing light direction and body grating of conductor Laser diode feed back light direction on the same line, and contrary, and the two is constituted
Linear type exocoel infrared semiconductor laser, the infrared semiconductor laser diode, volume Bragg grating form resonant cavity.
2. the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared according to claim 1, it is characterised in that: the cloth
Exocoel frequency-selecting element of the glug body grating as infrared semiconductor laser, can compress semiconductor laser output spectrum line width
And spectrum stability is improved, infrared semiconductor laser diode can be common infra-red laser diode, be also possible to vertical cavity
Surface-emission laser diode, output wavelength preferred 808nm, 850nm, 880nm, 940nm common semiconductor laser output wavelength.
3. the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared according to claim 1, it is characterised in that: described narrow
Band optical filter, transparent wavelength range are less than 30nm, can eliminate various exterior light interference, including sunlight and night lights, narrow
Band optical filter light transmission peak wavelength preferred 808nm, 850nm, 880nm, 940nm common near-infrared semiconductor laser export peak value
Spectrum, the narrow band filter can respectively fill one group before and after camera lens, only can also install one group in camera lens above or below.
4. the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared according to claim 1, it is characterised in that: the cloth
In -10 DEG C~50 DEG C of variation of ambient temperature, output swashs the linear type exocoel infrared semiconductor laser that glug body grating is formed
The peak wavelength drift value of light spectrum is less than 2 nanometers.
5. the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared according to claim 1, it is characterised in that: described red
Outer semiconductor laser Emission Spectrum Peals wavelength is in the narrow band filter transparent wavelength range, and the infrared semiconductor swashs
Light device emission spectrum halfwidth is less than the narrow band filter light transmitting wavelength bandwidth.
6. the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared according to claim 1, it is characterised in that: described red
Outer semiconductor laser works mode can be to be always on, or external trigger pulse shines.
7. the saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared according to claim 1, it is characterised in that: described red
The semiconductor laser diode rear end of outer semiconductor laser is equipped with radiator and electric heater, and summer starts radiator heat-dissipation,
The heating of winter starting electric heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810990094.XA CN108983531A (en) | 2018-08-28 | 2018-08-28 | A kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990094.XA CN108983531A (en) | 2018-08-28 | 2018-08-28 | A kind of saturating glass permeable membrane video camera of the narrow light spectrum image-forming of all-weather infrared |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114866672A (en) * | 2022-05-09 | 2022-08-05 | 中盾金卫激光科技（昆山）有限公司 | Novel infrared glass-transparent film camera |
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| CN114866672A (en) * | 2022-05-09 | 2022-08-05 | 中盾金卫激光科技（昆山）有限公司 | Novel infrared glass-transparent film camera |
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