CN105074326B - Lighting device - Google Patents
Lighting device Download PDFInfo
- Publication number
- CN105074326B CN105074326B CN201480011743.7A CN201480011743A CN105074326B CN 105074326 B CN105074326 B CN 105074326B CN 201480011743 A CN201480011743 A CN 201480011743A CN 105074326 B CN105074326 B CN 105074326B
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- light
- mentioned
- wavelength
- light source
- source portion
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
-
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
-
- 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
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
-
- 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]
Abstract
The light fixture (2) of lighting device has light source portion (3), the interior side leaded light of the wavelength-selective absorption portion (5) for including the pigment (51) for selectively absorbing the light of regulation wave band and the light that will be projected from light source portion (3) on one side towards light fixture (2) while towards planar light conductor (4) derived from wavelength-selective absorption portion (5).According to the structure, the light from light source portion (3) is incident by guide-lighting backward wavelength-selective absorption portion (5) in the inside of planar light conductor (4).Therefore, compared with the light from light source portion is directly to the incident situation in wavelength-selective absorption portion, pigment (51) is difficult to be exposed under the high-luminance light from light source portion (3) or heat, in addition, the optical path length of wavelength-selective absorption portion (5) becomes uniform.Thus, it is possible to the uneven luminance of irradiation light and the generation of uneven color be reduced, furthermore it is possible to prevent the modification of the pigment (51) positioned at the vicinity of light source portion (3).
Description
Technical field
The lighting device for the light being lowered the present invention relates to the light of irradiation regulation wave band.
Background technology
In the past, in the field of expression effect is paid attention in shop illumination etc., it is known to which irradiated body irradiation is lowered by
Provide the lighting device of the light of the light of wave band (referring for example to patent document 1).As shown in Fig. 6 (a), such lighting device 10 has
The standby LED20 for projecting white light, the reflecting plate 30 that the light from LED20 is reflected towards photoirradiated surface and it is located at light irradiation
On face and comprising selectively absorbing the wavelength-selective absorption portion 50 of the pigment 40 of the light of regulation wave band.Shone from lighting device 10
The light penetrated turns into the light that defined wavelength components are absorbed by pigment 40 from the LED20 white lights projected, for example, using Huang
In the case of the pigment 40 that coloured light absorbs, as the white light for being lowered by sodium yellow composition.Huang is lowered by as known
The white light of color light components makes irradiated body seem bright-coloured.
In addition, as shown in Fig. 6 (b), it is also known that have based on above-mentioned lighting device 10, be not provided with reflecting plate but make wavelength
Select the lighting device 10a prominent to LED20 sides in the way of covering LED20 of absorption portion 50.In such lighting device 10a
In, the white light projected from LED20 is incident directly to wavelength-selective absorption portion 50, so defined being reduced by pigment 40
After wavelength components, by external irradiation.
Patent document 1：2010-No. 267571 publications of Japanese Unexamined Patent Publication
The content of the invention
But, in lighting device 10 as described above, because the irradiation brightness immediately below LED20 is uprised, so hair
Raw uneven luminance, further, since the generation of the uneven luminance, is carried out immediately below LED20 between its periphery by pigment 40
Light absorbs in occur difference and occur uneven color.In addition, the pigment 40 near LED20 comes from due to being exposed to strongly
Under LED20 high-luminance light or heat, it is possible to be modified because the long-time of lighting device 10 is used, light absorbs work(is lost
Energy.
On the other hand, in lighting device 10a, in addition to the above problems, in the light projected from LED20 to positive direction
Occurs difference in the optical path length in wavelength-selective absorption portion 50 between L1 and the light L2 projected from LED20 to side.Therefore, exist
Occur difference in the light absorbs carried out by pigment 40 between light L1 and light L2 and occur uneven color.
The present invention solves the above problems, it is therefore an objective to provide a kind of uneven luminance and color that can reduce irradiation light not
Even generation, it is furthermore possible to prevent the lighting device of the modification of the pigment positioned at the vicinity in light source portion.
The lighting device of the present invention, possesses light fixture, during the light fixture has light source portion and the light that will be projected from the light source portion
Regulation wave band the wavelength-selective absorption portion that selectively absorbs of light, it is characterised in that above-mentioned light fixture is in writing board shape；It is above-mentioned
Wavelength-selective absorption portion is configured on the photoirradiated surface of above-mentioned light fixture；Periphery configuration of the above-mentioned light source portion along above-mentioned light fixture；On
State lighting device and be also equipped with the light that will be projected from above-mentioned light source portion while guide-lighting while towards above-mentioned towards the interior side of above-mentioned light fixture
Planar light conductor derived from wavelength-selective absorption portion.
Preferably, above-mentioned planar light conductor is formed as, and the center portion thereof is thin-walled and the periphery relative with above-mentioned light source portion
Portion is heavy wall.
This lighting device is preferably, and above-mentioned lighting device is also equipped with framework, and the framework houses above-mentioned light source portion, wavelength choosing
Absorption portion and planar light conductor are selected, and has to make the light from above-mentioned wavelength-selective absorption portion to opening that outside is projected
Mouthful；When by above-mentioned light fixture from above-mentioned light irradiation surface side, above-mentioned light source portion configuration is in the week side of boss more outer than above-mentioned opening；It is above-mentioned
Planar light conductor has at the position opposed with the light entrance face that the light from above-mentioned light source portion is incident will be from above-mentioned light entrance face
The fully reflecting surface that the interior side of incident light towards above-mentioned planar light conductor is totally reflected.
Preferably, above-mentioned framework has light reflection surface on the face relative with the peripheral part of above-mentioned planar light conductor.
Preferably, above-mentioned wavelength-selective absorption portion, which is included in wavelength 600nm, has the tetraazatetradecane porphyrin (day of absorption peak
Text：テ ト ラ ア ザ Port リ Off ィ リ Application) class pigment.
According to the present invention, due to the light from light source portion in the inside of planar light conductor by leaded light after select to inhale to wavelength
Receipts portion is incident, so compared with the light from light source portion is directly to the incident situation in wavelength-selective absorption portion, pigment is difficult exposure
Under high-luminance light or heat, in addition, the optical path length in wavelength-selective absorption portion becomes uniform.Therefore, it is possible to reduce irradiation light
Uneven luminance and uneven color generation, furthermore it is possible to prevent positioned at light source portion vicinity pigment modification.
Brief description of the drawings
Fig. 1 is the stereogram of the lighting device of an embodiment for the present invention.
Fig. 2 is the sectional view for the light fixture for constituting above-mentioned lighting device.
Fig. 3 is the exploded perspective view of above-mentioned light fixture.
Fig. 4 is the figure of the chemical constitution of pigment for representing to include in the wavelength-selective absorption portion for constituting above-mentioned light fixture.
Fig. 5 is the figure for the dichroism for representing the light from the irradiation of above-mentioned lighting device.
Fig. 6 (a) is the sectional view of conventional lighting device (light fixture), and Fig. 6 (b) is the sectional view of another conventional light fixture.
Embodiment
The lighting device of an embodiment for the present invention is illustrated referring to figs. 1 to Fig. 5.As shown in figure 1, illumination
Device 1 is located in the first-class desk lamp used of desk.Lighting device 1 possesses the light fixture 2 of circular plate shape, moves light fixture 2 freely
Arm 11 and the e axle supporting of arm 11 is placed on the first-class base 12 of desk that ground is kept.Its one side (in legend is by light fixture 2
Lower surface) it is used as the photoirradiated surface 2A of illuminated light.
As shown in Figures 2 and 3, light fixture 2 possesses along the light source portion 3 of the periphery configuration of light fixture 2 and will penetrated from light source portion 3
The interior side of the light gone out towards light fixture 2 is guide-lighting and to planar light conductor 4 derived from photoirradiated surface 2A sides.In addition, light fixture 2 is also equipped with matching somebody with somebody
Put the light of regulation wave band is selectively absorbed on photoirradiated surface 2A wavelength-selective absorption portion 5, for will be by light source portion 3
Heat sink 6 from the heat of generation to external cooling and house above-mentioned light source portion 3, planar light conductor 4, wavelength-selective absorption portion 5 and dissipate
The framework 7 of hot plate 6.
Framework 7 has the flange department 71 for covering above-mentioned part 3 to 6 from photoirradiated surface 2A sides and engaged with flange department 71
And the box main body 72 for covering part 3 to 6 from photoirradiated surface 2A opposite side.Flange department 71, which has, to be used for making from wavelength selection
The opening 73 for the toroidal that the light in absorption portion 5 is projected to outside.In addition, eliminating the diagram of box main body 72 in figure 3.
Light source portion 3 possesses multiple LED31 and installs each in the way of each LED31 optical axis is towards photoirradiated surface 2A
LED31 wiring substrate 32.When by light fixture 2 from photoirradiated surface 2A sides, each LED31 is leaned in the opening 73 than framework 7
Outer circumferential side and it is spaced from each other along the periphery of light fixture 2 and is configured to ring-type at equal intervals.Each LED31, which has, sends dominant wavelength 460nm's
The blue LED die (not shown) of blue light (also referring to Fig. 5) and 575~620nm of dominant wavelength is sent by the blue light stimulus
Sodium yellow~orange-colored light yellow class fluorophor (not shown).Each LED31 by make blue light from blue LED die with
White light is projected from the mutual colour mixture of sodium yellow~orange-colored light of yellow class fluorophor.
Planar light conductor 4 is the substantially circular plate shape that its peripheral part is expanded to immediately below LED31.Planar light conductor 4 has
It is relative with LED31 and set, the light entrance face 41 that light from LED31 is incident and be opposite to light entrance face 41 set, will be from light
The fully reflecting surface 42 that the interior side of the incident light from LED31 of the plane of incidence 41 towards planar light conductor 4 is totally reflected.Light entrance face 41
It is configured to plane.Fully reflecting surface 42 is in parabolic shape, is configured to, by adjusting its curvature, the light from LED31 is all-trans
Penetrate.
It is oppositely arranged, exported towards wavelength-selective absorption portion 5 with wavelength-selective absorption portion 5 in addition, planar light conductor 4 has
The light guide of light appears 43.Light guide appears 43, and to be configured to the peripheral parts of planar light conductor 4 be heavy wall and the central part of planar light conductor 4
The curved as thin-walled.
On the face of the side opposite with photoirradiated surface 2A sides of planar light conductor 4, paste and spread with the light for spreading light
Construction (not shown) and the scattered reflection piece 8 for reflecting light.Light diffusion construction for example processed by microscopic prisms, silk-screen printing or
Laser spots are processed and formed, and are more thickly set with the central part towards planar light conductor 4.Planar light conductor 4 is come from by making
The translucent material that LED31 light is passed through is constituted, for example, be made up of allyl resin, polycarbonate resin, glass.
Heat sink 6 is in circular plate shape, is bonded on the face of side opposite with LED mounting surfaces of wiring substrate 32.Heat sink 6 by
Material with higher pyroconductivity such as aluminium is constituted.
The flange department 71 of framework 7 has the light reflection surface for reflecting light to the face relative with the peripheral part of planar light conductor 4
74.Light reflection surface 74 is for example implemented white application by the inner peripheral surface to flange department 71 and formed.
Wavelength-selective absorption portion 5 is in the circular plate shape bigger than the opening 73 of flange department 71, the mode that opening 73 is covered
Configuration.Wavelength-selective absorption portion 5 is made up of the translucent material for passing through the light from LED31, interior containing at provision wavelengths
Pigment 51 with absorption peak.In addition, can both implement the face of the photoirradiated surface 2A sides in wavelength-selective absorption portion 5 by pressure
The light DIFFUSION TREATMENT of line processing etc., can also go back to the translucent material for constituting wavelength-selective absorption portion 5 in addition to pigment 51
Add light diffusing agent.
As shown in figure 4, pigment 51 is made up of tetraazatetradecane porphyrin class pigment, there is absorption peak in wavelength 600nm.Here,
R in formula1To R8(R represents alkylene to expression-R-O-Z bases, and Z represents straight chain, point chain or cyclic alkyl, straight chain, point chain or ring
Shape alkoxyalkyl, substitution or unsubstituting aromatic yl, substitution or unsubstituting aromatic alkyl, or straight chain, point chain or cyclic haloalkyl),
Hydrogen atom, halogen atom, cyano group, nitro, straight chain, point chain or cyclic alkyl, straight chain, point chain or cyclic alkoxy, substitution or not
Substituted aryl, substitution or unsubstituted aryloxy, substitution or unsubstituting aromatic alkyl, substitution or unsubstituted aralkoxy, straight chain, point chain
Or cyclic haloalkyl, straight chain, point chain or cyclic halo alkoxy, substitution or unsubstituted amino.R1To R8At least one be-
R-O-Z bases, mutually adjacent R1To R8Carbon-ring type aliphatic ring can also be formed.In addition, M represent two hydrogen atoms, two 1
Valency metallic atom, divalent metallic atom, trivalent substituted metal atom, 4 valency substituted metal atoms or oxidized metal atom.
Then, referring again to above-mentioned Fig. 2, the light projected from LED31 is illustrated to the process of external irradiation.From
The light (being represented with dotted arrow) that LED31 is projected is incident from light entrance face 41 to planar light conductor 4, is totally reflected face 42 towards face
The interior side total reflection of shape light conductor 4.The light being totally reflected by fully reflecting surface 42 is 43 complete by being appeared by light entrance face 41 and light guide again
Reflection and it is guide-lighting in the inside of planar light conductor 4, reached the light of light entrance face 41 a part (use single dotted broken line arrow table
Show) spread and reflected by scattered reflection piece 8, appeared 43 export from light guide.Selected from light guide light derived from 43 of appearing to wavelength
Absorption portion 5 is selected incident, there by pigment 51 by after the sodium yellow near wavelength 600nm~orange light absorbs, through framework 7
Opening 73 is by external irradiation.
As shown in figure 5, the light (indicated by the solid line) irradiated as described above from light fixture 2 is selected with never setting wavelength
The light (being represented with single dotted broken line) of the light fixture irradiation in absorption portion 5 is compared, the light being lowered as sodium yellow~orange-colored light.It is such
Light has the effect for making object of observation thing become eye-catching, for example, the character being written on the paper of white can be clearly seen.
As described above, according to the lighting device 1 of present embodiment, the light from light source portion 3 is in planar light conductor 4
Portion is incident by guide-lighting backward wavelength-selective absorption portion 5.Therefore, it is incident directly to wavelength-selective absorption portion with the light from light source portion
Situation compare, pigment 51 is difficult under high-luminance light or heat from light source portion 3, in addition, wavelength-selective absorption portion 5
Optical path length becomes uniform.Thus, it is possible to the uneven luminance of irradiation light and the generation of uneven color be reduced, furthermore it is possible to prevent
Positioned at the modification of the pigment 51 of the vicinity in light source portion 3.
In addition, in above process, because the peripheral part of planar light conductor 4 is heavy wall, and the center of planar light conductor 4
Portion is configured to thin-walled, thus the inside of planar light conductor 4 by guide-lighting light to light guide appear 43 incidence angle with towards face
The central part of shape light conductor 4 and diminish.Therefore, the central part of planar light conductor 4 is more directed towards, light is easier to be appeared from light guide
43 export, so the central part for being prevented from light fixture 2 is dimmed and makes irradiation brightness become uniform.
In addition, when the light fixture 2 from photoirradiated surface 2A sides, because light source portion 3 configures outer in the opening 73 than framework 7
The week side of boss, and fully reflecting surface 42 is provided with the position opposed with the light entrance face 41 of planar light conductor 4, so can not be straight from user
Connect and see light source portion 3 (LED31).Thereby, it is possible to prevent dazzle.
Further, since derived from the peripheral part of planar light conductor 4 light reflected by the light reflection surface 74 of framework 7 and again to
Planar light conductor 4 is incident, so the light utilization ratio of light fixture 2 can be improved.And then, because the light of scattered reflection piece 8 spreads structure
Make and more thickly set with the central part towards planar light conductor 4, so the central part of planar light conductor 4 is more directed towards,
Spread by light by guide-lighting light in planar light conductor 4 and construct the chance of diffusion and increase and be difficult to be appeared 43 export from light guide.By
This, the central part for being also prevented from light fixture 2 is dimmed and irradiation brightness is become uniform.
In addition, lighting device for the present invention is not limited to above-mentioned embodiment, various modifications can be carried out.Example
Such as, the shape of planar light conductor is not limited to above-mentioned shape, or the flat board that light entrance face is parallel to each other with light guide
Shape.In addition, pigment is not limited to tetraazatetradecane porphyrin class pigment, arbitrary color can be used according to the optical characteristics of irradiation light
Element.And then, wavelength-selective absorption portion can also be enable to change, making can suitably make according to the use environment of lighting device
With the structure in the wavelength-selective absorption portion comprising different pigments.
Description of reference numerals
1 lighting device
2 light fixtures
The photoirradiated surface of 2A light fixtures
3 light source portions
4 planar light conductors
41 light entrance faces
42 fully reflecting surfaces
5 wavelength-selective absorption portions
51 pigments
7 frameworks
73 openings
74 light reflection surfaces
Claims (4)
1. a kind of lighting device, possess light fixture, the light fixture there is light source portion and the light that will be projected from the light source portion in regulation
The wavelength-selective absorption portion that the light of wave band selectively absorbs, it is characterised in that
Above-mentioned light fixture is in writing board shape；
Above-mentioned wavelength-selective absorption portion configuration is on the photoirradiated surface of above-mentioned light fixture；
Periphery configuration of the above-mentioned light source portion along above-mentioned light fixture；
Above-mentioned lighting device is also equipped with the light that will be projected from above-mentioned light source portion while towards the guide-lighting one side court of interior side of above-mentioned light fixture
To planar light conductor derived from above-mentioned wavelength-selective absorption portion,
Above-mentioned planar light conductor is formed as, and the center portion thereof is thin-walled and the peripheral part relative with above-mentioned light source portion is heavy wall.
2. lighting device as claimed in claim 1, it is characterised in that
Above-mentioned lighting device is also equipped with framework, and the framework houses above-mentioned light source portion, wavelength-selective absorption portion and planar light conductor, and
And with the opening for being used for making the light from above-mentioned wavelength-selective absorption portion project to outside；
When by above-mentioned light fixture from above-mentioned light irradiation surface side, above-mentioned light source portion configuration is in the week side of boss more outer than above-mentioned opening；
Above-mentioned planar light conductor has at the position opposed with the light entrance face that the light from above-mentioned light source portion is incident will be from above-mentioned
The fully reflecting surface that the interior side of the incident light of light entrance face towards above-mentioned planar light conductor is totally reflected.
3. lighting device as claimed in claim 2, it is characterised in that
Above-mentioned framework has light reflection surface on the face relative with the peripheral part of above-mentioned planar light conductor.
4. such as lighting device according to any one of claims 1 to 3, it is characterised in that
Above-mentioned wavelength-selective absorption portion, which is included in wavelength 600nm, has the tetraazatetradecane porphyrin class pigment of absorption peak.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-074671 | 2013-03-29 | ||
| JP2013074671A JP6064283B2 (en) | 2013-03-29 | 2013-03-29 | Lighting device |
| PCT/JP2014/000929 WO2014155955A1 (en) | 2013-03-29 | 2014-02-21 | Illumination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105074326A CN105074326A (en) | 2015-11-18 |
| CN105074326B true CN105074326B (en) | 2017-07-11 |
Family
ID=51622978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480011743.7A Active CN105074326B (en) | 2013-03-29 | 2014-02-21 | Lighting device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6064283B2 (en) |
| CN (1) | CN105074326B (en) |
| WO (1) | WO2014155955A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016149269A (en) * | 2015-02-12 | 2016-08-18 | パナソニックＩｐマネジメント株式会社 | Lighting device |
| JP6601653B2 (en) * | 2015-02-12 | 2019-11-06 | パナソニックＩｐマネジメント株式会社 | Lighting device |
| JP2016170355A (en) * | 2015-03-13 | 2016-09-23 | パナソニックＩｐマネジメント株式会社 | Wavelength control filter, and light emitting device and illumination device having the same |
| JP6890296B2 (en) * | 2016-11-29 | 2021-06-18 | パナソニックＩｐマネジメント株式会社 | Light guide plate and lighting equipment using it |
| USD985828S1 (en) * | 2021-03-23 | 2023-05-09 | MerchSource, LLC | Desk lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243355A (en) * | 2005-08-26 | 2008-08-13 | 国立大学法人东北大学 | Liquid crystal display and light guide plate |
| CN201504374U (en) * | 2009-08-07 | 2010-06-09 | 珠海格力电器股份有限公司 | Household appliance panel and light guide device thereof |
| TW201229434A (en) * | 2010-12-02 | 2012-07-16 | Intematix Corp | Solid-state lamps with light guide and photoluminescence material |
| CN102713417A (en) * | 2010-01-13 | 2012-10-03 | 富士胶片株式会社 | Light guide plate, surface illuminating device, and liquid crystal display device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004323481A (en) * | 2003-04-28 | 2004-11-18 | Mitsubishi Chemicals Corp | Tetraazaporphyrin compound, tetraazaporphyrin pigment and optical filter using the same |
| JP5022118B2 (en) * | 2007-07-02 | 2012-09-12 | 第四電設 株式会社 | Planar light emitting device |
| JP2009199971A (en) * | 2008-02-25 | 2009-09-03 | Nippon Seiki Co Ltd | Lighting device |
| JP2010026571A (en) * | 2008-07-15 | 2010-02-04 | Oki Semiconductor Co Ltd | Image processor and image processing method |
| JP2010267571A (en) * | 2009-05-18 | 2010-11-25 | Toshiba Lighting & Technology Corp | Lighting device |
-
2013
- 2013-03-29 JP JP2013074671A patent/JP6064283B2/en active Active
-
2014
- 2014-02-21 WO PCT/JP2014/000929 patent/WO2014155955A1/en active Application Filing
- 2014-02-21 CN CN201480011743.7A patent/CN105074326B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243355A (en) * | 2005-08-26 | 2008-08-13 | 国立大学法人东北大学 | Liquid crystal display and light guide plate |
| CN201504374U (en) * | 2009-08-07 | 2010-06-09 | 珠海格力电器股份有限公司 | Household appliance panel and light guide device thereof |
| CN102713417A (en) * | 2010-01-13 | 2012-10-03 | 富士胶片株式会社 | Light guide plate, surface illuminating device, and liquid crystal display device |
| TW201229434A (en) * | 2010-12-02 | 2012-07-16 | Intematix Corp | Solid-state lamps with light guide and photoluminescence material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014199758A (en) | 2014-10-23 |
| JP6064283B2 (en) | 2017-01-25 |
| WO2014155955A1 (en) | 2014-10-02 |
| CN105074326A (en) | 2015-11-18 |
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