CN108131574A - A kind of high efficiency LED directional lights irradiate linear light sorurce - Google Patents
A kind of high efficiency LED directional lights irradiate linear light sorurce Download PDFInfo
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- CN108131574A CN108131574A CN201810131333.6A CN201810131333A CN108131574A CN 108131574 A CN108131574 A CN 108131574A CN 201810131333 A CN201810131333 A CN 201810131333A CN 108131574 A CN108131574 A CN 108131574A
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- reflecting surface
- light source
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 238000009826 distribution Methods 0.000 claims description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000010230 functional analysis Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/06—Optical design with parabolic curvature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Led Device Packages (AREA)
Abstract
The invention provides a kind of high efficiency LED directional lights irradiation linear light sorurce, including pedestal, parabolic reflecting surface, arc-shaped reflecting surface, horizontal reflection face, LED point light source；Horizontal reflection face is mounted on above pedestal, and the LED point light source of array arrangement is equipped on horizontal reflection face；Parabolic reflecting surface is placed in the upper left side of LED point light source primary optical axis, and arc-shaped reflecting surface is placed in the upper right side of LED point light source primary optical axis；The bottom of parabolic reflecting surface is connected with the left side edge of base top, and the left side of arc-shaped reflecting surface is connected with the top of parabolic reflecting surface；LED point light source is located on the focus line of parabolic reflecting surface, and the center of circle of arc-shaped reflecting surface and the focus of parabolic reflecting surface are conllinear；There are β angles with horizontal reflection face for the primary optical axis of LED point light source.A kind of high efficiency LED directional lights irradiation linear light sorurce described in the invention is simple and efficient, and good illumination effect is highly practical, and parallel photo-irradiation intensity is evenly.
Description
Technical field
The invention belongs to linear optical device technical field, is irradiated more particularly, to a kind of high efficiency LED directional lights
Linear light sorurce.
Background technology
Line scan camera needs LED linear light source to be assisted when imaging, and general LED linear light source includes
LED light emitting arrays and cylindrical lens.Due to be irradiated on the length direction of linear light sorurce uniformly, and close to isotropism, institute
It is big with the light emitting angle of LED.Light is being converged by cylindrical lens in horizontal direction, is reducing illuminating ray in Vertical Square
To dispersion angle, so as to increase intensity of illumination, prior art is as shown in Figure 3.
Prior art converges light source by cylindrical lens, due to incident light angle to be met emergent light greatly
The small requirement of angle, cylindrical lens need the wide minute surface of short focus, increase manufacture difficulty in this way, also improve storage and transport
Difficulty, and part energy of light source can be then sacrificed using multi-stage lens, implementation cost is promoted, while using the light meeting of lens convergence
Cause light distribution uneven, cause imaging effect poor.Therefore it needs to propose that a kind of novel LED linear light source is existing to make up
There is the deficiency of technology.
Invention content
In view of this, the invention is directed to a kind of high efficiency LED directional lights irradiation linear light sorurce, without using saturating
Mirror realizes that large-angle LED shines convergence, and so as to be emitted directional light that intensity further homogenizes in vertical direction.
In order to achieve the above objectives, the technical solution of the invention is realized in：
A kind of high efficiency LED directional lights irradiate linear light sorurce, including：Pedestal, parabolic reflecting surface, arc-shaped reflection
Face, horizontal reflection face, LED point light source；The horizontal reflection face is installed on above pedestal, and array is equipped on horizontal reflection face and is arranged
The LED point light source of cloth；The parabolic reflecting surface is placed in the upper left side of LED point light source, and the arc-shaped reflecting surface is placed in LED
The upper right side of point light source；The bottom of the parabolic reflecting surface is connected with the left side edge of the base top, the circular arc
The left side of shape reflecting surface is connected with the top of parabolic reflecting surface；The primary optical axis of the LED point light source and horizontal reflection face
There are β angles, the β angles can guarantee the flat fire light light distribution of LED point light source evenly.
Further, the parabolic reflecting surface and arc-shaped reflecting surface form asymmetric cylindrical surface for reflection face up and down,
LED point light source is located on the focus line of parabolic reflecting surface；In the prior art, it is anti-to be placed in symmetrical parabola for LED point light source
It penetrates on the focus line of face, focus line is located at the center of reflecting surface, LED seat, aluminum substrate and supporting rack can be made to block center light in this way
Beam causes light source to utilize insufficient, and the parabolic reflecting surface that the present apparatus is selected only intercepts one section of paraboloid, its focus line exists
The lower section of reflecting surface does not generate light and blocks.
Further, the parabolic reflecting surface and arc-shaped reflecting surface form left-right asymmetry cylindrical surface for reflection face,
The arc-shaped reflecting surface is the curved reflecting surface less than quadrant arc length；The arc-shaped reflecting surface convergence LED points
It on the light of light source upper right side to center of circle line, then is reflected on parabolic reflecting surface by horizontal reflection face, finally by parabola
Reflective surface has been obviously improved the utilization rate of light source into exiting parallel light, this method, while reduces parallel light emergence
The width in face.
Further, the center of circle of the focus of the parabolic reflecting surface and arc-shaped reflecting surface is conllinear.
Further, the light distribution of the LED point light source can be obtained by the following formula：
I (θ)=dL/d θ=2Rcos θ
R is definite value in formula, and R values change with the model of LED point light, and θ is that measurement point deviates LED point light source primary optical axis
Angle, the value range of θ is (- 90 °, 90 °)；
Light intensity is distributed as when primary optical axis is installed with β angles：
I (θ-β)=dL/d (θ-β)=2Rcos (θ-β)
The light distribution for being converted into vertical y directions is：
I (y)=dL/dy=【dL/d(θ-β)】×【d(θ-β)/dy】
=2Rcos (θ-β) ×【d(θ-β)/dy】
Bring parabolic reflecting surface formula into：
ρ=ρ cos θ+2b；Y=ρ sin θs
It can obtain：
I (y)=Rbcos (θ-β)/【1-cos (θ-β)】
B is parabolical intercept constant in formula；
It can be obtained according to above-mentioned all formula when there are the largest light intensity in vertical range during β angles is poor：
E (β)=MaxI(y)-MinI(y)
When E (β) is minimized, light distribution is most uniform, and the β angles value range is (0 °, 90 °), passes through functional
Analysis can obtain the value of β angles.
Further, the mounting height in the horizontal reflection face depends on the value of intercept constant b.
Further, the parabolic reflecting surface, arc-shaped reflecting surface and horizontal reflection face are squeezed by aluminum alloy materials
Pressure is integrally formed, and reflecting surface is formed using mirror finish, chromium plating.
Relative to the prior art, a kind of high efficiency LED directional lights described in the invention irradiation linear light sorurce have with
Lower advantage：
A kind of high efficiency LED directional lights of the present invention irradiate linear light sorurce compared with prior art, simple, efficient,
It is at low cost, and good illumination effect, there is higher practicability；Present invention reduces the width in parallel light emergence face, increase light
Line intensity；The present invention realizes the homogenization distribution of illumination collimated light beam brightness by the LED of special mounting angle；The present invention adopts
With asymmetric cylindrical surface for reflection face, the light utilization of LED point light source is improved.
Description of the drawings
The attached drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The illustrative embodiments and their description made do not form the improper restriction to the invention for explaining the invention.
In attached drawing：
Fig. 1 is the schematic three dimensional views of the invention；
Fig. 2 is the cut-away illustration of the invention；
Fig. 3 is prior-art illustration；
Fig. 4 is LED point light source light distribution schematic diagram.
Reference sign：
1- pedestals；2- horizontal reflection faces；3-LED point light sources；4- parabolic reflecting surfaces；The arc-shaped reflectings surface of 5-.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description rather than instruction
Or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments creates.
As depicted in figs. 1 and 2, a kind of high efficiency LED directional lights irradiation linear light sorurce, including：It is pedestal 1, parabola shaped anti-
Penetrate face 4, arc-shaped reflecting surface 5, horizontal reflection face 2, LED point light source 3；Horizontal reflection face 2 is installed on 1 top of pedestal, horizontal reverse
The mounting height for penetrating face 2 depends on the value of intercept constant b, and the LED point light source 3 of array arrangement is equipped on horizontal reflection face 2；It throws
Object line-shaped reflective face 4 is placed in the upper left side of LED point light source 3, and arc-shaped reflecting surface 5 is placed in the upper right side of LED point light source 3, parabolic
The center of circle of the focus in line-shaped reflective face 4 and arc-shaped reflecting surface 5 is conllinear.Parabolic reflecting surface 4 and arc-shaped reflecting surface 5 are formed
Upper and lower asymmetric cylindrical surface for reflection face, LED point light source 3 are located on the focus line of parabolic reflecting surface 4；In the prior art, LED
Point light source 3 is placed on symmetrical parabolic reflecting surface focus line, and focus line is located at the center of reflecting surface, can make in this way LED seat,
Aluminum substrate and supporting rack block central light beam, light source are caused to utilize insufficient, the parabolic reflecting surface 4 that the present apparatus is selected only is cut
One section of paraboloid is taken, its focus line does not generate light and blocks in the lower section of reflecting surface；Parabolic reflecting surface 4 and arc-shaped
Reflecting surface 5 forms left-right asymmetry cylindrical surface for reflection face, and arc-shaped reflecting surface 5 is anti-less than the arc of quadrant arc length
Penetrate face；Arc-shaped reflecting surface 5 is converged on the light to center of circle line of 3 upper right side of LED point light source, then is reflected by horizontal reflection face 2
On parabolic reflecting surface 4, exiting parallel light is finally reflected by parabolic reflecting surface 4, this method is obviously improved
The utilization rate of light source, while reduce the width in parallel light emergence face；The bottom of parabolic reflecting surface 4 and 1 top of pedestal
Left side edge is connected, and the left side of arc-shaped reflecting surface 5 is connected with the top of parabolic reflecting surface 4；The master of LED point light source 3
For optical axis with horizontal reflection face 2 there are β angles, β angles can guarantee the flat fire light light distribution of LED point light source 3 evenly.Parabolic
Line-shaped reflective face 4, arc-shaped reflecting surface 5 and horizontal reflection face 2 are squeezed by aluminum alloy materials and are integrally formed, and are thrown using minute surface
Light, chromium plating form reflecting surface.
With reference to the surface of intensity distribution of Fig. 4, it is known that：The light distribution of LED point light source 3 can be obtained by the following formula：
I (θ)=dL/d θ=2Rcos θ
R is definite value in formula, and R values change with the model of LED point light source 3, and θ deviates 3 key light of LED point light source for measurement point
The angle of axis, the value range of θ is (- 90 °, 90 °)；
Light intensity is distributed as when primary optical axis is installed with β angles：
I (θ-β)=dL/d (θ-β)=2Rcos (θ-β)
The light distribution for being converted into vertical y directions is：
I (y)=dL/dy=【dL/d(θ-β)】×【d(θ-β)/dy】
=2Rcos (θ-β) ×【d(θ-β)/dy】
Bring 4 formula of parabolic reflecting surface into：
ρ=ρ cos θ+2b；Y=ρ sin θs
It can obtain：
I (y)=Rbcos (θ-β)/【1-cos (θ-β)】
B is parabolical intercept constant in formula；
It can be obtained according to above-mentioned all formula when there are the largest light intensity in vertical range during β angles is poor：
E (β)=MaxI(y)-MinI(y)
When E (β) is minimized, light distribution is most uniform, and β angles value range is (0 °, 90 °), passes through functional analysis
The value of β angles can be obtained, the value precision of β is bigger, and the uniformity of emergent light is higher.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection domain within.
Claims (7)
1. a kind of high efficiency LED directional lights irradiate linear light sorurce, it is characterised in that：Including pedestal (1), parabolic reflecting surface
(4), arc-shaped reflecting surface (5), horizontal reflection face (2), LED point light source (3)；The horizontal reflection face (2) is installed on pedestal (1)
Top is equipped with the LED point light source (3) of array arrangement on horizontal reflection face (2)；The parabolic reflecting surface (4) is placed in LED
The upper left side of point light source (3), the arc-shaped reflecting surface (5) are placed in the upper right side of LED point light source (3)；It is described parabola shaped anti-
The bottom for penetrating face (4) is connected with the left side edge at the top of the pedestal (1), the left side of the arc-shaped reflecting surface (5) and throwing
The top in object line-shaped reflective face (4) is connected；The primary optical axis of the LED point light source (3) is with horizontal reflection face (2) in β angles.
2. a kind of high efficiency LED directional lights irradiation linear light sorurce according to claim 1, it is characterised in that：The parabolic
Line-shaped reflective face (4) and arc-shaped reflecting surface (5) form asymmetric cylindrical surface for reflection face up and down, and LED point light source (3) is positioned at parabolic
On the focus line in line-shaped reflective face (4).
3. a kind of high efficiency LED directional lights irradiation linear light sorurce according to claim 1 or 2, it is characterised in that：The throwing
Object line-shaped reflective face (4) and arc-shaped reflecting surface (5) form left-right asymmetry cylindrical surface for reflection face, the arc-shaped reflecting surface
(5) it is the curved reflecting surface less than quadrant arc length.
4. a kind of high efficiency LED directional lights irradiation linear light sorurce according to claim 1, it is characterised in that：The parabolic
The focus in line-shaped reflective face (4) and the center of circle of arc-shaped reflecting surface (5) are conllinear.
5. a kind of high efficiency LED directional lights irradiation linear light sorurce according to claim 1, it is characterised in that：The LED points
The light distribution of light source (3) can be obtained by the following formula：
I (θ)=dL/d θ=2Rcos θ
R is definite value in formula, and R values change with the model of LED point light source (3), and θ deviates LED point light source (3) key light for measurement point
The angle of axis, the value range of θ is (- 90 °, 90 °)；
Light intensity is distributed as when primary optical axis is installed with β angles：
I (θ-β)=dL/d (θ-β)=2Rcos (θ-β)
The light distribution for being converted into vertical y directions is：
I (y)=dL/dy=【dL/d(θ-β)】×【d(θ-β)/dy】
=2Rcos (θ-β) ×【d(θ-β)/dy】
Bring parabolic reflecting surface (4) formula into：
ρ=ρ cos θ+2b；Y=ρ sin θs
It can obtain：
I (y)=Rbcos (θ-β)/【1-cos(θ-β)】
B is parabolical intercept constant in formula；
It can be obtained according to above-mentioned all formula when there are the largest light intensity in vertical range during β angles is poor：
E (β)=MaxI(y)-MinI(y)
When E (β) is minimized, light distribution is most uniform, and the β angles value range is (0 °, 90 °), passes through functional analysis
It can obtain the value of β angles.
6. a kind of high efficiency LED directional lights irradiation linear light sorurce according to claim 5, it is characterised in that：The level
The mounting height of reflecting surface (2) depends on the value of intercept constant b.
7. a kind of high efficiency LED directional lights irradiation linear light sorurce according to claim 1, it is characterised in that：The parabolic
Line-shaped reflective face (4), arc-shaped reflecting surface (5) and horizontal reflection face (2) are squeezed by aluminum alloy materials and are integrally formed, using
Mirror finish, chromium plating form reflecting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131333.6A CN108131574A (en) | 2018-02-09 | 2018-02-09 | A kind of high efficiency LED directional lights irradiate linear light sorurce |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131333.6A CN108131574A (en) | 2018-02-09 | 2018-02-09 | A kind of high efficiency LED directional lights irradiate linear light sorurce |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108131574A true CN108131574A (en) | 2018-06-08 |
Family
ID=62430795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810131333.6A Pending CN108131574A (en) | 2018-02-09 | 2018-02-09 | A kind of high efficiency LED directional lights irradiate linear light sorurce |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234341A (en) * | 2021-11-16 | 2022-03-25 | 佛山柯维光电股份有限公司 | Toilet disinfection and odor removal device and preparation method thereof |
| CN118328325A (en) * | 2024-06-17 | 2024-07-12 | 常州星宇车灯股份有限公司 | Car light optical performance optimizing system |
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| JPH08262437A (en) * | 1995-03-22 | 1996-10-11 | Mitsubishi Electric Corp | Lighting device |
| JP2004342506A (en) * | 2003-05-16 | 2004-12-02 | Matsushita Electric Works Ltd | Reflector and luminaire |
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| JP2009205900A (en) * | 2008-02-27 | 2009-09-10 | Toyota Central R&D Labs Inc | Light irradiation device |
| CN102386304A (en) * | 2010-09-01 | 2012-03-21 | 侯虞城 | LED (light-emitting diode) reflective condensing part |
| CN102853330A (en) * | 2011-06-28 | 2013-01-02 | 夏普株式会社 | Illumination device and vehicle headlight |
| CN103471036A (en) * | 2013-09-10 | 2013-12-25 | 复旦大学 | Lighting effect theoretically nondestructive LED (Light Emitting Diode) light total reflection collimation system |
| CN208138888U (en) * | 2018-02-09 | 2018-11-23 | 天津海达奥普光电技术股份有限公司 | A kind of high efficiency LED directional light irradiation linear light sorurce |
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2018
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| JPH0547201A (en) * | 1991-08-20 | 1993-02-26 | Fujitsu General Ltd | Projection illuminating device |
| JPH08262437A (en) * | 1995-03-22 | 1996-10-11 | Mitsubishi Electric Corp | Lighting device |
| JP2004342506A (en) * | 2003-05-16 | 2004-12-02 | Matsushita Electric Works Ltd | Reflector and luminaire |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234341A (en) * | 2021-11-16 | 2022-03-25 | 佛山柯维光电股份有限公司 | Toilet disinfection and odor removal device and preparation method thereof |
| CN118328325A (en) * | 2024-06-17 | 2024-07-12 | 常州星宇车灯股份有限公司 | Car light optical performance optimizing system |
| CN118328325B (en) * | 2024-06-17 | 2024-10-22 | 常州星宇车灯股份有限公司 | Car light optical performance optimizing system |
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