CN106405981A - Anti-glare method for street lamp camera - Google Patents
Anti-glare method for street lamp camera Download PDFInfo
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- CN106405981A CN106405981A CN201610786994.3A CN201610786994A CN106405981A CN 106405981 A CN106405981 A CN 106405981A CN 201610786994 A CN201610786994 A CN 201610786994A CN 106405981 A CN106405981 A CN 106405981A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005286 illumination Methods 0.000 claims abstract description 36
- 210000003128 head Anatomy 0.000 claims description 47
- 230000000694 effects Effects 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 claims description 7
- 230000004313 glare Effects 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
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- 238000012986 modification Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 210000001747 pupil Anatomy 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
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- 238000013475 authorization Methods 0.000 description 1
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- 238000012216 screening Methods 0.000 description 1
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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
- 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
- G03B11/045—Lens hoods or shields
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention belongs to the field of photography, and discloses an anti-glare method for a street lamp camera. The method comprises the following steps: according to a lamp structure, the location relationship between LED modules and a camera to be detected, and the distance between a light-emitting center of each LED module and the camera to be detected, selecting a structure type of lens hoods, so as to obtain a 3D model of the lens hoods; obtaining a scattering model of the camera to be detected; carrying out scattering simulation to calculate the intensity of illumination on an image-sensitive element of the camera to be detected, the total integrated scattering (TIS), and the image contrast or a PST value of the camera; according to the intensity of illumination, the TIS, and the image contrast or the PST value of the camera obtained through the scattering simulation, judging whether the structure type, the heights and the inclinations which are selected for the lens hoods meet the requirements or not; and according to the structure type, the heights and the inclinations which are selected for the lens hoods, determining the structure type, the heights and the inclinations of the lens hoods, and carrying out productization of the lens hoods. The anti-glare method provided by the invention can be widely applied in the fields of designing and manufacturing of various security street lamps.
Description
Technical field
The invention belongs to photographic attachment field, more particularly, to a kind of it is exclusively used in being integrated with the setting of fixed illuminator
The anti-glare method of photographic attachment and device.
Background technology
With information Perception intellectuality, facilitation, the arriving in efficient epoch, " wisdom street lamp " as one expansible,
Can value-added city intelligent network system, in platforms such as car networking, Monitoring Urban Environment, the city handy service for the people, government notices
Huge effect is played on construction.The successful issue of " wisdom street lamp " solution and commercialization, can effectively promote smart city
Construction, be that urbanite brings seamless wireless network experience, accelerate wirelessly entirely to connect the arrival in epoch.
" wisdom street lamp " is integrated with the work(such as micro-base station, Wi-Fi, LED, photographic head, charging pile, electronics issue screen simultaneously
Can, so that common street lamp variable body becomes the carrier of an informationization and real-time performance.
Now, most intelligent street lamps are all the street lamps of the integral structure that lamp holder is connected with lamp stand, most intelligent objects
(Wi-Fi, sound equipment, photographic head, display screen, various sensor etc.) is all integrated on lamp stand, or the side using intelligent object pole
Formula loads.
Because the intelligent object of above-mentioned intelligent street lamp is typically integrated, it is fixed on lamp stand, the technology bar to lamp stand
Part and manufacture requirements are higher, and lamp stand need to possess single current supply circuit, ability while meeting the normal function of supporting light fixture
Ensure the intelligent object normal work being arranged on lamp stand.Especially for the improvement project of street lamp existing in city, need simultaneously
More bulb changing pole and lamp holder so that existing street lamp improvement project relatively costly, bring relatively to city intelligent network system volume construction
High cost and longer construction period, are unfavorable for popularization and the enforcement of " wisdom street lamp ".
Authorized announcement date is on December 09th, 2015, and Authorization Notice No. is that the Chinese utility model of CN 204853221U is special
Profit, discloses " a kind of LED illumination lamp with camera function ", it includes：The support being configured to by multiple arch upper-arm circumferences；Connect
Mounting head in the top of support；Positioned at support bottom and fixing multiple LED modules corresponding with arch arm；Multiple LED modules
Arrangement surrounds round shape structure；It is assemblied in and tied by the hollow out that the round shape structure that support and multiple LED modular arrangements surround is collectively forming
Video camera at structure；It is also equipped with shade and osculum on each LED module；Each LED module all comprises two groups not
LED lamp bead with colour temperature.This technical scheme achieves LED lamp while illumination but also with camera function.Existing in city
Have in the improvement project of street lamp, using after this technical scheme it is only necessary to change cap part, you can existing street lamp is had simultaneously
There are illumination and safety protection function, contribute to reducing the cost of existing street lamp improvement project.
In technique scheme, by arranging the version of shade outside each LED module, to reduce outside dry
Disturb light and enter video camera, reduce the refraction within camera lens and reflection, around reduction video camera, LED lamplight is to video camera
The impact of image quality, to solve the problems, such as the position for video camera easily dazzle of generation and albefaction under light.
But, in technique scheme, the how different mechanical configuration parameters according to light fixture, quickly select suitable screening
Photomask structure and parameter, with the effective spuious pass reducing imageing sensor image-sensitive unit and reflected light, reduce dazzle, raising regards
Frequency image quality, a never preferable solution, the structure and parameter of its shade can only be manually real by reality
Determining, inefficiency, especially when the layout structure of fitting structure or LED module or dimensions of mechanical structures occur for the mode tested
It is difficult to quickly find most suitable shading cover structure and parameter during change, bring difficulty to road lamp design and manufacture.
Content of the invention
The technical problem to be solved is to provide a kind of anti-glare method for street lamp video camera, and it is true
Length and the internal diameter parameter of a series of shades in fixed baffle vane number and altitude range, can be obtained rapidly, then by emulation
Simulation, according to the light intensity illumination of video camera, integral scattering energy (TIS), the picture contrast of video camera or PST value, you can fast
Speed determines optimum structure and the parameter of shade, can efficiently reduce spuious pass and the reflected light of imageing sensor image-sensitive unit,
Reducing the imaging in image planes for the interference light, thus greatly reducing dazzle, improving video pictures quality.
The technical scheme is that：There is provided a kind of anti-glare method for street lamp video camera, including in LED module
Or surrounding's setting shade of photographic head to be measured, the LED module in order to be pointed to around photographic head to be measured carries out shading treatment；Its
Feature is the described anti-glare method for street lamp video camera, determines frame for movement and the chi of shade by following step
Very little：
Position relationship between A, the structure according to light fixture, LED module and photographic head to be measured and LED module go out light center
Away from the distance of photographic head to be measured, select described shading cover structure type, the height including shade and inclination angle；
B, pass through CAD software, 3D modeling is carried out to selected shading cover structure, obtains the 3D model of shade；
C, will be combined to the 3D model of shade and photographic head optical texture, obtain the scattering model of photographic head to be measured；
D, the scattering model to photographic head to be measured are scattered simulating, and calculate and are radiated on photographic head image-sensitive element to be measured
Light intensity illumination, integral scattering energy (TIS), the picture contrast of video camera or PST value；
E, the light intensity illumination by obtaining to scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or
PST value, judge the structure type of selected shade, the height of shade and inclination angle whether meet the requirements；
If the light intensity illumination that F is obtained by scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or
PST value exceeds predetermined numerical range, modification the institute height of selected shade and inclination angle, thereby change select shade light logical
Amount bore；
G, return step B；
If the light intensity illumination that H is obtained by scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or
In predetermined numerical range, then scattering analogue terminates PST value；
I, according to selected shading cover structure type, the height of shade and inclination angle, determine shading cover structure type,
The height of shade and inclination angle, and by its commercialization.
Specifically, described shading cover structure type includes the cylindric and contour arrangement of baffle vane, cylindric and baffle vane is terraced
Degree arrangement, taper and the contour arrangement of baffle vane and taper and baffle vane gradient arrangement.
Specifically, the described light intensity illumination being radiated on photographic head image-sensitive element to be measured determines according to the following formula：
Wherein, EvFor light intensity illumination, τ0For the transmittance of imaging lens, D is clear aperature, and f is image distance/focal length, and D/f is
Relative aperture, M0For scenery surface luminous exitance.
Specifically, described scattering analogue is carried out according to the following equation：
Wherein, σpqFor scattering coefficient, R is to receive radius surface, PpqFor incoherent scattering power, subscript p represent incident illumination and
The horizontal polarization mode of scattered light, subscript q represents the vertical polarization mode of incident illumination and scattered light, E0For incident field intensity, A0It is photograph
Penetrate area.
Specifically, for described integral scattering energy TIS, the ratio that scattering energy accounts for incident illumination energy is：
Wherein, ETISFor integral scattering energy, v is the azimuth perpendicular to body surface, fBSDF(θr,vr,θi,vi) it is scattered
Penetrate energy and account for projectile energy proportion function, θr、θiFor horizontal direction angle of reflection, angle of incidence, vr、viFor the reflection of vertical surface direction
Angle, angle of incidence, d θidviFor double integral bin.
Specifically, the PST value of described video camera determines according to the following formula：
Wherein, θ is the angle of visual field, Ed(θ) radiant intensity producing for image planes, EiFor injecting radiant intensity at pupil.
Further, the predetermined value scope of described light intensity illumination, the picture contrast of video camera or PST value is respectively：
Light intensity illumination：0.05lx～10-5lx；
The picture contrast of video camera：10%～30%；
The PST value of video camera：9.2×10-2～1.1 × 10-11.
Further, the height of described shade and inclination angle scope are respectively：
The altitude range of shade：35～60mm；
The inclination angle scope of shade：25 °～45 °；
Caliber size in shade：250～300mm；
The outer caliber size of shade：290～350mm.
Further, the position relationship between described LED module and photographic head to be measured includes described LED module and is located at treating
Survey the side of photographic head, and described LED module is around the surrounding of photographic head to be measured.
Further, when described LED module is located at the side of photographic head to be measured, described shading cover structure type is selected
Baffle vane gradient is arranged；
The implication of described baffle vane gradient arrangement is equal by ladder for the baffle vane coating on upper strata to bottom or high point to low spot
Even distribution.
Further, when described LED module is around photographic head surrounding to be measured, described shading cover structure type is selected
The contour arrangement of baffle vane；
Described baffle vane contour arrangement implication is that each gradient is contour.
Further, when going out the distance away from photographic head to be measured for the light center more than 300mm of described LED module, described
Shading cover structure selects cylindric baffle vane.
Further, when the LED module stated is when going out the distance away from photographic head to be measured for the light center less than 300mm, described
Shading cover structure selects taper baffle vane.
Further, described shade is arranged on around LED module.
Further, described shade is arranged on around photographic head to be measured.
The anti-glare method for street lamp video camera described in technical scheme, by increasing shade from thing
The imaging interference of a part of veiling glare is eliminated on reason, controls 30% about with the contrast guaranteeing video camera, to obtain most preferably
Image taking effect.
Compared with the prior art, it is an advantage of the invention that：
1. can be gone out in light according to the position relationship between the structure of light fixture, LED module and photographic head to be measured and LED module
The distance away from photographic head to be measured for the heart, quickly selectes described shading cover structure type；
2. pass through scattering analogue, can quickly and accurately obtain selected shading cover structure to photographic head photographic effect to be measured
Ensure, to obtain optimal image taking effect.
3. correlation analysiss and calculating are carried out by computer, speed is fast, and experimental result is converted into by original qualitative analyses
Quantitative analyses, parameter adjustment is convenient, favorable repeatability, and experimental result is more accurate.
Brief description
Fig. 1 is the steps flow chart block diagram of the present invention；
Fig. 2 is the schematic construction of the high gradients such as baffle vane of the present invention arrangement；
Fig. 3 a is the schematic diagram of integral scattering energy TIS of the present invention；
Fig. 3 b be the baffle vane of absorption reflectance and the shade Gradient distribution of shade bin veiling glare coating it
Between suppression relation schematic diagram；
Fig. 4 a is the perspective view of security protection money street lamp of the present invention；
Fig. 4 b is the present invention looks up structural representation of security protection money street lamp of the present invention；
Fig. 4 c is the side structure schematic view of security protection money street lamp of the present invention；
Fig. 5 a is the side structure schematic view of shade of the present invention；
Fig. 5 b be shade of the present invention look up perspective view.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
In Fig. 1, the step of anti-glare method of the present invention includes：
Position relationship between A, the structure according to light fixture, LED module and photographic head to be measured and LED module go out light center
Away from the distance of photographic head to be measured, select described shading cover structure type, the height including shade and inclination angle；
B, pass through CAD software, 3D modeling is carried out to selected shading cover structure, obtains the 3D model of shade；
C, will be combined to the 3D model of shade and photographic head optical texture, obtain the scattering model of photographic head to be measured；
D, the scattering model to photographic head to be measured are scattered simulating, and calculate and are radiated on photographic head image-sensitive element to be measured
Light intensity illumination, integral scattering energy (TIS), the picture contrast of video camera or PST value；
E, the light intensity illumination by obtaining to scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or
PST value, judge the structure type of selected shade, the height of shade and inclination angle whether meet the requirements；
If the light intensity illumination that F is obtained by scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or
PST value exceeds predetermined numerical range, modification the institute height of selected shade and inclination angle, thereby change select shade light logical
Amount bore；
G, return step B；
If the light intensity illumination that H is obtained by scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or
In predetermined numerical range, then scattering analogue terminates PST value；
I, according to selected shading cover structure type, the height of shade and inclination angle, determine shading cover structure type,
The height of shade and inclination angle, and by its commercialization.
In Fig. 2, give the schematic construction of the contour arrangement of baffle vane；
The implication of described baffle vane gradient arrangement is that the spacing size of involved baffle vane is identical；
The implication of described baffle vane gradient arrangement is that the absorption figure layer of veiling glare is evenly arranged at equal intervals.
Advantage using baffle vane gradient arrangement is：The modulation flexibility ratio of spurious rays is high.
In Fig. 3 (a), the implication of parameters is as follows：
dEiIt is from dAsIncoming illumination on face；
dLsIt is from dAsThe energy radiateing on face；
dAsFor stray light emission bin；
dΩsFor scattering section unit；
For horizontal azimuth；
θ is polar angle, starts to calculate on the basis of plane normal to be measured.
As seen from the figure, different scatterings can be produced using the angle difference in the different spuious incident ray of rough surface
Matter, can effectively evade falling unnecessary scattering light to video camera imaging bin, thus lifting image quality.
In Fig. 3 (b), the implication of parameters is as follows：
r、r0、riFor direct reflection direction, wherein r0=ri；
N is refractive index；
β、β0For scattering wave vector projection vector；
v、v0For projecting polar angle.
This figure illustrates the painting of the absorption reflectance of shade bin veiling glare and the baffle vane of shade Gradient distribution
Suppression relation between material, between reflection light center ± 4.56 °.
Fig. 4 a is the perspective view of security protection money street lamp of the present invention；
Fig. 4 b is the present invention looks up structural representation of security protection money street lamp of the present invention；
Fig. 4 c is the side structure schematic view of security protection money street lamp of the present invention；
Fig. 5 a is the side structure schematic view of shade of the present invention；
Fig. 5 b be shade of the present invention look up perspective view.
Because above-mentioned figure is all drawn according to frame for movement GB, therefore those skilled in the art, can be unambiguously true
Its represented implication fixed, therefore concrete drawing content, here no longer describes.
The technical program carries out the design of the outer shading cover structure of photographic head and parameter based on scattering model, can greatly promote
The suppression level to veiling glare for the outer shade, and improve simulation accuracy in simulation analysis.
The shaded effect of shade, with also relevant with the material of shade, shade surface smoothness, scattering energy concentration
The reduction of degree, the extra-inhibitory angle of needs can increase, and baffle vane quantity also will increase.
But the increase of baffle vane quantity, may bring as in reflection model above situation during 30 ° of off-axis angle so as to
Occurrence probability increases, and now can reduce number of rings by increasing the upper shed bore of shade.During practical application, bore increases
Volume and weight can be led to increase.
In order to ensure the highest illumination of scenery needed for picture quality and the ratio of minimal illumination.Safety-protection system requirement is had complete
Weather ability to work, both (≤10-5lux) can use under night no star or no moonlight, again can be in (＞ under sunlight
105lux) work, need to meet big dynamic range, if not taking necessary physics shading technological means, only by changing aperture
Method and the time of integration changing, changing the method for aperture area, to come real be not all right.Simultaneous contrast general only 10%
～30%, optimal picture contrast is simulated by shade, contrast is high, image effect is very hard, and transition zone is too obvious, image
Viewing effect is uncomfortable.Contrast is too low, and image is duskyly also uncomfortable.By many experiments in contrast 30% about
During viewing, image effect is optimal.
Using technical scheme, by analogue simulation, according to light intensity illumination, the integral scattering energy of video camera
(TIS), the picture contrast of video camera or PST value, you can the rapid optimum structure determining shade and parameter, can subtract effectively
The spuious pass of few imageing sensor image-sensitive unit and reflected light, reduce the imaging in image planes for the interference light, thus greatly reducing
Dazzle, improves video pictures quality.
Technical scheme, can be widely applied to design and the manufacture field of various security protection money street lamps.
Claims (16)
1. a kind of anti-glare method for street lamp video camera, hides including setting around LED module or photographic head to be measured
Light shield, the LED module in order to be pointed to around photographic head to be measured carries out shading treatment；It is characterized in that the described street lamp that is used for images
The anti-glare method of machine, determines frame for movement and the size of shade by following step：
Position relationship between A, the structure according to light fixture, LED module and photographic head to be measured and LED module go out light center away from treating
Survey the distance of photographic head, select described shading cover structure type, the height including shade and inclination angle；
B, pass through CAD software, 3D modeling is carried out to selected shading cover structure, obtains the 3D model of shade；
C, will be combined to the 3D model of shade and photographic head optical texture, obtain the scattering model of photographic head to be measured；
D, the scattering model to photographic head to be measured are scattered simulating, and calculate the light intensity being radiated on photographic head image-sensitive element to be measured
Illumination, integral scattering energy (TIS), the picture contrast of video camera or PST value；
E, the light intensity illumination by obtaining to scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or PST
Value, judge the structure type of selected shade, the height of shade and inclination angle whether meet the requirements；
If the light intensity illumination that F is obtained by scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or PST
Value, beyond predetermined numerical range, modification the institute height of selected shade and inclination angle, thereby changes the luminous flux of selected shade
Bore；
G, return step B；
If the light intensity illumination that H is obtained by scattering analogue, integral scattering energy (TIS), the picture contrast of video camera or PST
In predetermined numerical range, then scattering analogue terminates value；
I, according to selected shading cover structure type, the height of shade and inclination angle, determine type, the shading of shading cover structure
The height of cover and inclination angle, and by its commercialization.
2. it is characterized in that described shading cover structure according to described in claim 1 for the anti-glare method of street lamp video camera
Type include the cylindric and contour arrangement of baffle vane, cylindric and baffle vane gradient arrangement, taper and the contour arrangement of baffle vane and
Taper and baffle vane gradient arrangement.
3. to be measured according to being radiated at described in for the anti-glare method of street lamp video camera, it is characterized in that described in claim 1
Light intensity illumination on photographic head image-sensitive element determines according to the following formula：
Wherein, EvFor light intensity illumination, τ0For the transmittance of imaging lens, D is clear aperature, and f is image distance/focal length, and D/f is relatively
Aperture, M0For scenery surface luminous exitance.
4. it is characterized in that described scattering analogue according to described in claim 1 for the anti-glare method of street lamp video camera
Carry out according to the following equation：
Wherein, σpqFor scattering coefficient, R is to receive radius surface, PpqFor incoherent scattering power, subscript p represents incident illumination and scattering
The horizontal polarization mode of light, subscript q represents the vertical polarization mode of incident illumination and scattered light, E0For incident field intensity, A0For shadow surface
Long-pending.
5., it is characterized in that for described integration for the anti-glare method of street lamp video camera according to described in claim 1
Scatter energy TIS, the ratio that scattering energy accounts for incident illumination energy is：
Wherein, ETISFor integral scattering energy, v is the azimuth perpendicular to body surface, fBSDF(θr,vr,θi,vi) for scattering energy
Amount accounts for projectile energy proportion function, θr、θiFor horizontal direction angle of reflection, angle of incidence, vr、viFor vertical surface direction angle of reflection, enter
Firing angle, d θidviFor double integral bin.
6. it is characterized in that the PST of described video camera according to described in claim 1 for the anti-glare method of street lamp video camera
Value determines according to the following formula：
Wherein, θ is the angle of visual field, Ed(θ) radiant intensity producing for image planes, EiFor injecting radiant intensity at pupil.
7. according to for the anti-glare method of street lamp video camera, it is characterized in that described light intensity illumination described in claim 1, take the photograph
The predetermined value scope of the picture contrast of camera or PST value is respectively：
Light intensity illumination：0.05lx～10-5lx；
The picture contrast of video camera：10%～30%；
The PST value of video camera：9.2×10-2～1.1 × 10-11.
8. it is characterized in that described shade according to described in claim 1 for the anti-glare method of street lamp video camera
Height and inclination angle scope are respectively：
The altitude range of shade：35～60mm；
The inclination angle scope of shade：25 °～45 °；
Caliber size in shade：250～300mm；
The outer caliber size of shade：290～350mm.
9. according to for the anti-glare method of street lamp video camera, it is characterized in that described LED module described in claim 1 and treat
Survey the position relationship between photographic head and include the side that described LED module is located at photographic head to be measured, and described LED module
Surrounding around photographic head to be measured.
10. it is characterized in that described LED module according to described in claim 1 for the anti-glare method of street lamp video camera
Positioned at the side of photographic head to be measured when, described shading cover structure type selects baffle vane gradient to arrange；
The implication of described baffle vane gradient arrangement is uniformly divided by ladder for the baffle vane coating on upper strata to bottom or high point to low spot
Cloth.
11., is characterized in that when described LED mould for the anti-glare method of street lamp video camera according to described in claim 1
Group around photographic head surrounding to be measured when, described shading cover structure type selects the contour arrangement of baffle vane；
Described baffle vane contour arrangement implication is that each gradient is contour.
12. is characterized in that described LED module according to described in claim 1 for the anti-glare method of street lamp video camera
When going out the distance away from photographic head to be measured for the light center and being more than 300mm, described shading cover structure selects cylindric baffle vane.
13., is characterized in that when the LED module stated for the anti-glare method of street lamp video camera according to described in claim 1
When going out the distance away from photographic head to be measured for the light center and being less than 300mm, described shading cover structure selects taper baffle vane.
14. is characterized in that described shade sets according to described in claim 1 for the anti-glare method of street lamp video camera
Put around LED module.
15. is characterized in that described shade sets according to described in claim 1 for the anti-glare method of street lamp video camera
Put around photographic head to be measured.
16. according to for the anti-glare method of street lamp video camera, it is characterized in that described in claim 1 described for street lamp
With the anti-glare method of video camera, physically eliminate the imaging interference of a part of veiling glare by increasing shade, to guarantee
The contrast of video camera controls 30% about, to obtain optimal image taking effect.
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| CN201610786994.3A CN106405981A (en) | 2016-08-31 | 2016-08-31 | Anti-glare method for street lamp camera |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108073014A (en) * | 2017-12-26 | 2018-05-25 | 中国科学院西安光学精密机械研究所 | Light blocking ring setting method based on stray light suppression angle |
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| CN109471312A (en) * | 2018-12-20 | 2019-03-15 | 羊可欣 | A kind of mobile phone camera shade |
| CN111985116A (en) * | 2020-08-31 | 2020-11-24 | 杭州涂鸦信息技术有限公司 | A method, system and related equipment for lens interference detection based on optical simulation software |
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