CN1912457A - Surface lighting device - Google Patents

Surface lighting device Download PDF

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Publication number
CN1912457A
CN1912457A CNA2006101081514A CN200610108151A CN1912457A CN 1912457 A CN1912457 A CN 1912457A CN A2006101081514 A CNA2006101081514 A CN A2006101081514A CN 200610108151 A CN200610108151 A CN 200610108151A CN 1912457 A CN1912457 A CN 1912457A
Authority
CN
China
Prior art keywords
light
led
aforementioned
emitting area
light guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2006101081514A
Other languages
Chinese (zh)
Inventor
吉田均
清水雅之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moritex Corp
Original Assignee
Moritex Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moritex Corp filed Critical Moritex Corp
Publication of CN1912457A publication Critical patent/CN1912457A/en
Pending legal-status Critical Current

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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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The subject of the invention is to provide high luminance without causing luminance nonuniformity even in one color, and to emit uniform illumination light without color nonuniformity even when colors are mixed. A transparent light guide body (B) having a front face as a luminescent surface (2) is formed by stacking transparent light guide plates (6R, 6G and 6B) with a flat face side as a luminescent surface (5). Respective color LEDs, (4R, 4G and 4B) are mounted to side faces of the light guide plates (6R, 6G and 6B) at a predetermined pitch, and respective color LEDs, (4R, 4G and 4B) are lighted, extinguished and adjusted in order to radiate an illumination light of arbitrary color.

Description

Surface illuminator
Technical field
The present invention relates to make light scattering, make this scattered light surface illuminator of outgoing equably from the face side that becomes light-emitting area in the inside of transparent light guide body.
Background technology
The image inspection is widely used in the inspection, quality management of industrial product etc., in the workshop, and for goods are clearly made a video recording, the illumination light that requirement is can the irradiation of long-time continuous ground stable and consume the few lighting device of electric power.
Therefore, proposed to make it from the scheme of the surface illuminator of light-emitting area outgoing at the scattering-in that the front is made the irradiates light that sends from each LED... at light conductor as the side of the transparent light guide body of light-emitting area configuration LED....
No. 3187280 communique of [patent documentation 1] special permission
By this, owing to utilize LED, so by Current Control irradiating illumination light for a long time, consumption electric power is few, thereby can reduce maintenance cost and operating cost as light source.
And, owing to developed the LED of high brightness recently, so, by disposing these LED,, can guarantee enough brightness as lighting source.
But, under the situation of using this lighting device,, be difficult to the light of transmission/reflection specific wavelength sometimes owing to check object, so, wish in general-purpose system, can select arbitrarily to throw light on light wavelength (color).
Therefore, also proposed a kind of lighting device, this lighting device disposes the versicolor LED of RGB successively in the side, perhaps be configured in the color LED of being furnished with the RGB sheet in each element, by shades of colour is carried out fader control, and can be with colour light emitting arbitrarily.
But,, so versicolor light is colour mixture fully, have the irregular problem of generation form and aspect with the spacing configuration of the amount of the diameter that is equivalent to element owing to have to even the versicolor LED of RGB is arranged very close to each otherly.In addition, when the illumination light of irradiation monochrome, owing between the LED of same color, can form the interval that is equivalent to 3 spacings, so, cause brightness irregularities, because versicolor parts number becomes 1/3, so,, exist brightness to reduce by 1/3 problem by simple calculating.
Relative therewith, if adopt the color LED that in each element, is equipped with the RGB sheet, it is irregular then can not produce the form and aspect that caused by the device disposition interval, but, because the characteristics of luminescence (tone, the brightness) difference of each sheet, so, it is irregular to be easy to generate form and aspect, owing to color LED can not be decomposed and change sheet, so it is irregular very difficult to eliminate this form and aspect.
And, owing to for the light uniform color mixture being adopted light DIFFUSION TREATMENT agent etc., so, the problem that exists brightness further to reduce.
And then, under the situation of carrying out monochromatic illumination,, have to use the LED of high brightness in order to shine the light of high brightness, because brightness depends on the optical characteristics of each element of employed LED, so, can not make it luminous with the brightness that is higher than it.
Summary of the invention
Therefore, technical task of the present invention is: even also can not cause brightness irregularities when monochrome, can obtain the illumination light of high brightness, even under the situation of colour mixture, also can outgoing not have the irregular uniform illumination light of form and aspect.
In order to solve above-mentioned problem, surface illuminator of the present invention, with the front as light-emitting area, to the transparent light guide body of side of major general as the installed surface of LED, the different multiple LED of emission wavelength is installed, make the irradiates light that comes from each LED at the light conductor scattering-in, from aforementioned light-emitting area outgoing, it is characterized in that, aforementioned transparent light guide body is by making the multi-layer transparent LGP light-emitting area towards lamination formation pro, aforementioned LED is installed in the side of each LGP that becomes the LED of aforementioned light conductor installed surface with the spacing of regulation, and simultaneously, the mode that all equates with each row is selected along the combination of the emission wavelength of the LED of light emission direction alignment arrangements.
According to surface illuminator of the present invention, because the transparent light guide style constitutes as become 3 layers LGP with lamination, on each LGP according to the trichromatic LED of color code alignment arrangements RGB, so, from the light of versicolor LED irradiation scattering-in, from the light-emitting area outgoing in front at the transparent light guide body.
Thereby under the situation of carrying out monochromatic illumination, if only light the wherein LED of any color, its light is at transparent light guide body scattering-in, from the light-emitting area outgoing in front.Because can make closely alignment arrangements of LED, so, in the time of can not being arranged in row as LED, between the LED of same color, form the interval that is equivalent to 3 spacings with RGB, can not cause brightness irregularities.
In addition, owing to can not reduce each monochromatic parts number, so brightness can not reduce yet.
And then under the situation of carrying out the colour mixture illumination, if light the above LED of any two kinds of colors, its light is at transparent light guide body scattering-in, from the light-emitting area outgoing.Because the LGP of the versicolor LED of alignment arrangements disposes with respect to the light emission direction front and back, so, can not cause that form and aspect are irregular, can be from the uniform mixed light of light-emitting area outgoing.
Description of drawings
Fig. 1 is the cutaway view of expression according to an example of surface illuminator of the present invention.
Fig. 2 is the perspective view of its major part of expression.
Fig. 3 is a key diagram of representing the scattering recess enlargedly.
Fig. 4 is the key diagram of other form of implementation of expression.
The specific embodiment
In this example, even can not cause brightness irregularities in order to reach monochrome yet, can obtain the illumination light of high brightness, under the situation of colour mixture, can outgoing there be the purpose of the irregular even illumination light of form and aspect yet, make its light-emitting area towards lamination pro the multi-layer transparent LGP, to form the transparent light guide body, LED is installed in the side of each LGP, simultaneously, makes along each row that are combined in of the emission wavelength of the LED of light emission direction alignment arrangements all to equate.
Fig. 1 is the cutaway view of expression according to an example of surface illuminator of the present invention, and Fig. 2 is the perspective view of its major part of expression, and Fig. 3 is a key diagram of representing the scattering recess enlargedly, and Fig. 4 is the key diagram of the other form of implementation of expression.
[embodiment 1]
Fig. 1～surface illuminator 1 shown in Figure 3, with the front as light-emitting area 2, to the transparent light guide body B of side of major general as LED installed surface 3, the trichromatic LED4R of RGB, 4G, 4B are installed as the different multiple LED of emission wavelength, make the irradiates light that comes from each LED4R, 4G, 4B scattering-in at light conductor B, from light-emitting area 2 with the outgoing equably of this scattered light.
In this example, to make its light-emitting area 5 towards three layers of laminations pro as transparent light guide plate 6R, 6G, the 6B of light-emitting area 5 with planar portions, constitute printing opacity light conductor B, respectively form 6 LED installing hole 7..., alignment arrangements red LED 4R, green LED 4G and cyan LED4B on each LGP 6R, 6G, 6B in the side that becomes each transparent light guide plate 6R of LED installed surface 3,6G, 6B with the spacing that equates.
By this, select in the mode that each row all equate along the combination of the emission wavelength of LED4R, the 4G of light emission direction alignment arrangements, 4B.
On the bottom surface 8 of each transparent light guide plate 6R, 6G, 6B, form and make from the scattering recess 9... of the light scattering of each LED4R, 4G, 4B incident.
This scattering recess 9... forms the wire parallel with LED installed surface 3, and, to form along with leaving the mode that LED installed surface 3, spacing narrow down.
Like this, the spacing of the scattering recess 9... by making wire changes, and is few near the amount of LED installed surface 3 sidescattering light, and along with away from LED installed surface 3, the amount of scattered light increases, by this, and can be from the uniform scattered light of light-emitting area 5 irradiations.
The shape of scattering recess 9 is arbitrarily, for example as shown in Figure 3, forms V-shaped groove, is the pit of the conical point-like of 0.1m m * 0.1mm by utilizing Laser Processing with diameter * degree of depth that the spacing of 0.1mm forms the bottom surface continuously perhaps, thereby forms wire.
Under the situation that forms conical pit continuously, compare with V-shaped groove, can be with more irregularly scattering of light from LED4R, 4G, 4B incident, thereby, improve from the uniformity of light of light-emitting area 2 irradiations.
And then in the shell 10 that transparent light guide body B is received into that light-emitting area 2 and LED installed surface 3 opens wide, face that will be in addition surrounds with light diffuser plate.
By this, light diffuser plate is adjacent on the face outside light-emitting area 2 and the LED installed surface 3, will shines the inside that outside scattered light reflexes to light conductor B, its part can be used effectively as illumination light from each face.
In addition, on versicolor LED4R, 4G, 4B, connect drive circuit 11R, 11G, 11B that versicolor LED4R, 4G, 4B were lighted/extinguish, carried out light modulation, can be to each emission wavelength control light quantity.
Be a kind of example of structure of the present invention above, below its effect described.
Surface illuminator 1, its transparent light guide body B becomes three layers LGP 6R, 6G, 6B to constitute by lamination, on each bottom surface 8, form and make from the scattering recess 9... of the light scattering of each LED4R, 4G, 4B incident, so, be scattered recess 9... scattering from the light of versicolor LED irradiation, its part is passed through the light-emitting area 2 of the light-emitting area 5 of LGP 6R, 6G, 6B towards light conductor B.
In addition, arrive the light of the face outside the light-emitting area 2 of light conductor B, reflex to the inside of light conductor B by shell 10, its part is effectively utilized as illumination light.
In addition, under the situation of carrying out monochromatic illumination, if any one color among LED4R, 4G, the 4B is lighted by drive circuit 11R, 11G, 11B, at first by the scattering recess 9... of the transparent light guide plate 6R of correspondence, 6G, 6B and scatter plate scattering on every side, this scattered light is towards the light-emitting area 3 of light conductor B for this light.
At this moment, because versicolor LED4R, 4G, 4B be alignment arrangements closely, so, in the time of can not being arranged in row as LED with RGB between the LED of same color formation be equivalent to the interval of 3 spacings, the inhomogeneous of brightness can be do not produced, uniform monochromatic illumination can be obtained
In addition, owing to do not reduce the parts number of each color, so brightness can not reduce yet.
Secondly, under the situation of carrying out the colour mixture illumination, if any two kinds of LED more than the color of LED4R, 4G, 4B are lighted by drive circuit 11R, 11G, 11B, at first by the scattering recess 9... of the transparent light guide plate 6R of correspondence, 6G, 6B and scatter plate scattering on every side, this scattered light is towards the light-emitting area 3 of light conductor B for this light.
Because alignment arrangements has LGP 6R, the 6G of versicolor LED4R, 4G, 4B, 6B to dispose with respect to the light emission direction front and back, so, can not cause that form and aspect are irregular, can be from the uniform mixed light of light-emitting area 3 outgoing.
At this moment, if as required the light quantity of versicolor LED4R, 4G, 4B is controlled, can shine the illumination light of random color.
[embodiment 2]
In the superincumbent explanation, be illustrated for situation about versicolor LED4R, 4G, 4B being respectively installed on each of each LGP 6R, 6G, 6B, but, the present invention is not limited thereto, as long as each row that are combined in along the emission wavelength of LED4R, the 4G of light emission direction alignment arrangements, 4B all equate, its order also can be different, for example, as shown in Figure 4, also can be with LED4R, 4G, 4B on each of three layers of LGP 6U, 6M, 6D along the unduplicated mode alignment arrangements of light emission direction RGB.
In addition, LED is not limited to three kinds of colors so long as two kinds of colors are above get final product, and then, be not limited to visible light, need only the wavelength difference, also can send infrared light and ultraviolet light.
And then drive circuit 11R, 11G, 11B also can only light/extinguish, and do not carry out the control of light quantity.
And then, under situation about using as the high brightness monochromatic illumination, if in Fig. 4 on each of three layers of (multilayer) LGP 6U, 6M, 6D, LED4R, the 4G, the 4B that replace RGB, the LED of any glow color of alignment arrangements, the White LED of for example high brightness, the monochromatic illumination that can be used as three times of brightness by simple calculating uses.
The industrial possibility of utilizing
The present invention is suitable for making in the inside of transparent light guide body light scattering, from becoming light-emitting area Face side is with this scattered light surface illuminator of outgoing equably.

Claims (10)

1. surface illuminator as light-emitting area, is being installed the different multiple LED of emission wavelength to side of major general on as the transparent light guide body of LED installed surface with the front, make the irradiates light that comes from each LED at the light conductor scattering-in, from aforementioned light-emitting area outgoing, it is characterized in that
Make its light-emitting area towards pro carrying out lamination the multi-layer transparent LGP, form aforementioned transparent light guide body,
Aforementioned LED is installed in the side of each LGP that becomes the LED of aforementioned light conductor installed surface with the spacing of regulation, and simultaneously, the mode that all equates with each row is selected along the combination of the emission wavelength of the LED of light emission direction alignment arrangements.
2. surface illuminator as claimed in claim 1 is characterized in that, is equipped with for each emission wavelength aforementioned LED to be lighted/extinguishes or the drive circuit of light modulation.
3. surface illuminator as claimed in claim 1 is characterized in that, aforementioned transparent light guide body constitutes the aforementioned LGP lamination with the corresponding quantity of kind of LED.
4. surface illuminator as claimed in claim 1 is characterized in that, the LED that emission wavelength equates is installed on aforementioned each LGP.
5. surface illuminator as claimed in claim 1 is characterized in that, aforementioned transparent light guide body constitutes three layers of transparent light guide plate lamination that the versicolor LED of RGB is installed.
6. surface illuminator as claimed in claim 1 is characterized in that, forms in the bottom surface sections of aforementioned each LGP to make from the scattering recess of the light scattering of aforementioned LED incident.
7. surface illuminator as claimed in claim 1 is characterized in that, aforementioned scattering recess forms the wire parallel with the LED installed surface, and, to form along with leaving the mode that LED installed surface spacing narrows down.
8. surface illuminator as claimed in claim 7 is characterized in that, the scattering recess of aforementioned wire forms point-like continuously on its length direction pit constitutes.
9. surface illuminator as claimed in claim 1 is characterized in that, the face outside the light-emitting area of aforementioned transparent light guide body and the LED installed surface is surrounded by light diffuser plate and constitutes.
10. surface illuminator as light-emitting area, is being installed a plurality of LED to side of major general on as the transparent light guide body of LED installed surface with the front, makes irradiates light from each LED at the light conductor scattering-in, from aforementioned light-emitting area outgoing, it is characterized in that,
Make its light-emitting area towards pro carrying out lamination the multi-layer transparent LGP, constitute aforementioned transparent light guide body,
Aforementioned LED is installed on the side of each LGP that becomes the LED of aforementioned light conductor installed surface with the spacing of regulation.
CNA2006101081514A 2005-07-29 2006-07-28 Surface lighting device Pending CN1912457A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005219815A JP4721803B2 (en) 2005-07-29 2005-07-29 Surface lighting device
JP2005219815 2005-07-29

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Publication Number Publication Date
CN1912457A true CN1912457A (en) 2007-02-14

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JP (1) JP4721803B2 (en)
KR (1) KR20070014974A (en)
CN (1) CN1912457A (en)
TW (1) TW200716915A (en)

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CN101986020B (en) * 2009-07-29 2012-04-18 苏州向隆塑胶有限公司 Method for eliminating color difference of overlapped backlight modules
CN101986014A (en) * 2010-11-04 2011-03-16 友达光电股份有限公司 Lateral light source module
CN103090202A (en) * 2011-10-27 2013-05-08 东莞市奥普特自动化科技有限公司 Shadowless lighting device
WO2013163897A1 (en) * 2012-05-04 2013-11-07 深圳安嵘光电产品有限公司 Combined type light guide plate and illuminating lamp
CN103322763A (en) * 2013-06-03 2013-09-25 青岛海尔特种电冰箱有限公司 Refrigerator lighting device and refrigerator
WO2014194650A1 (en) * 2013-06-03 2014-12-11 青岛海尔特种电冰箱有限公司 Illumination device for refrigerator, and refrigerator
CN107816665A (en) * 2017-11-02 2018-03-20 安徽唯诗杨信息科技有限公司 A kind of bluish-green LED backlight module of high colour gamut and preparation method thereof
CN107816665B (en) * 2017-11-02 2020-01-07 深圳市众铭安科技有限公司 High-color-gamut blue-green LED backlight module and manufacturing method thereof
WO2022161477A1 (en) * 2021-02-01 2022-08-04 漳州立达信光电子科技有限公司 Panel lamp

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