CN105230127A - Polychromatic source device - Google Patents
Polychromatic source device Download PDFInfo
- Publication number
- CN105230127A CN105230127A CN201480027571.2A CN201480027571A CN105230127A CN 105230127 A CN105230127 A CN 105230127A CN 201480027571 A CN201480027571 A CN 201480027571A CN 105230127 A CN105230127 A CN 105230127A
- Authority
- CN
- China
- Prior art keywords
- light
- emitting diode
- wide spectral
- transducer
- source device
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
- B60Q3/80—Circuits; Control arrangements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
Abstract
Using the wide spectral light (Bs) that the wide spectral light-emitting diode (231a-231c) of batch production product minimum for the luminance deviation employed as light-emitting diode chip for backlight unit between individuality sends, assorted transducer (232a-232c) is utilized to be converted to the light (Br, Bg, Bb) of R (red), G (green), B (indigo plant).Utilization is applied to the duty ratio of the pulse signal of wide spectral light-emitting diode (231a-231c), with the luminance balance of controller (30) adjustment light (Br, Bg, Bb), obtains the light (B) of the illuminant colour expected.Due to the integrated mode of the duty ratio according to pulse signal, the luminance balance of light (Br, Bg, Bb) determines uniquely, therefore, it is possible to do not obtain the illuminant colour (B) expected with finely tuning operation.
Description
Technical field
The present invention relates to the polychromatic source device that the illuminant colour that employs light-emitting diode is variable.
Background technology
Be developed as opportunity with blue LED, tremendous expansion can be obtained by the color of light-emitting diode performance.With this, propose and will employ power saving and the color light source device of long-life LED is used in various field.As an one example, as the light source of the illumination apparatus to the privileged site irradiation light in car, propose and use full-color LED (patent documentation 1).
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2009-90929 publication (JP2009-090929A)
Summary of the invention
Full-color LED is arranged on by the 3 look light-emitting diode chip for backlight unit of RGB on 1 substrate to form, the duty ratio of the luminescence driving of each chip of unit control, the lightness of the light that adjustment is assorted, thus can change illuminant colour.
Incidentally, compared with the wide spectral luminescence diode of white diode of batch production, the output of full-color LED is quite few.Therefore, the quality management that the lightness of the light making assorted light-emitting diode chip for backlight unit send in each full-color LED is consistent is very difficult in reality, generally carries out following quality management: only make the lightness of using up arrive the light-emitting diode chip for backlight unit of permissible level.Therefore, even if drive with the luminescence of the light-emitting diode chip for backlight unit of the pulse enable signal colors of same duty cycle, the lightness of assorted light is also not necessarily identical.
Therefore, in order to make full-color LED with correct colour light emitting, such as, as blank level adjustment, carry out illuminant colour on the drived control making full-color LED consistent with actual illuminant colour, the fine setting operation of the duty ratio of pulse signal is absolutely necessary.
Particularly, in vehicle, in some situations, carry out by the pair of right and left of driver's seat side and front passenger's seat side the illumination employing full-color LED.In this case, even if carry out the Duty ratio control of model identical to the full-color LED of left and right, illuminant colour also can be different in left and right, and color lighting can not be utilized to improve the commodity value of vehicle.
The present invention completes in view of the foregoing, the object of the present invention is to provide a kind of polychromatic source device employing multiple light-emitting diode, do not carry out the fine setting operation of the duty ratio of the pulse signal when luminescences such as blank level adjustment drive, can obtain the variable illuminant colour with the solid colour controlled yet.
For achieving the above object, polychromatic source device involved by form of the present invention is by individually carrying out drived control to multiple light-emitting diode, thus the illuminant colour of the light being mixed with each light-emitting diode is changed, comprise: multiple wide spectral light-emitting diode, it uses the diode chip for backlight unit of same specification to send wide spectral light; Multiple look transducer, the wide spectral light that each wide spectral light-emitting diode sends respectively is converted to the mutually different light of color in 3 primary colors of the light forming illuminant colour by respectively; And drive division, its with utilize assorted transducer carry out look change before and after the pulse signal of duty ratio corresponding to the brightness ratio of light, drive each wide spectral light-emitting diode corresponding with assorted transducer respectively, this brightness ratio predetermines according to the color after utilizing assorted transducer to change in advance.
That is, wide spectral light such for the white light of corresponding each wide spectral light-emitting diode is carried out look conversion by corresponding with colors assorted transducer respectively, thus generates the light of the multiple colors in 3 primary colors of the light forming illuminant colour.
Herein, what each wide spectral light-emitting diode used is not the full-color LED be arranged on by the light-emitting diode chip for backlight unit of 3 colors of RGB on 1 substrate, but uses the light-emitting diode chip for backlight unit of same specification to send the batch production product of wide spectral light.That is, wide spectral light-emitting diode is used for the light-emitting diode chip for backlight unit that the luminance deviation between the individuality of same Intensity LEDs is minimum when driving with the pulse signal of same duty ratio.
And, assorted transducer comfort oneself in the future spectral luminescence diode wide spectral light frequency component in, except the frequency component of its allochromatic colour of the color after conversion intercepts, wide spectral light is converted to respectively assorted light.
Therefore, look transducer is utilized to be that the brightness of the brightness ratio wide spectral light of the light of each color is little from original color conversion.And the brightness reduced due to look conversion decides according to the frequency component of other colors of the leniently frequency component obstruct of spectral light.Therefore, the brightness ratio of the light before and after look conversion determines individually according to the frequency component that comprises of light after the color of the light after conversion, i.e. conversion.
That is, the brightness of the light of the colors after utilizing assorted transducer to change determines uniquely according to the color (frequency component) after conversion.Therefore, in order to obtain the illuminant colour expected, the light of the colors after changing to make look is respectively the luminance balance corresponding to illuminant colour, consider that the brightness ratio before and after look conversion calculates the brightness of each wide spectral light-emitting diode, utilize drive division to carry out luminescence with the pulse signal of the duty ratio corresponding to this brightness ratio to each wide spectral light-emitting diode and drive.
Thus, do not need to take the illuminant colour of the reality be made up of the light after utilizing assorted transducer to carry out look conversion etc. and to confirm with the illuminant colour on drived control consistent, do not need the fine setting operation of the duty ratio of carrying out blank level adjustment isopulse signal, the variable illuminant colour with the solid colour controlled can be obtained.
In addition, can be also following formation: also comprise combining optical, the light after utilizing assorted transducer to carry out look conversion to guide in same light path and mixes by it, and the light as illuminant colour penetrates.In this case, the light addition colour mixture after polychromatic source device self makes assorted conversion also penetrates as illuminant colour.
In addition, polychromatic source device also can make the light of the illuminant colour be made up of the light after utilizing assorted transducer to carry out look conversion inject to multiple positions of vehicle.
When the polychromatic source device luminescence at multiple positions making vehicle with identical illuminant colour, in each polychromatic source device, respectively luminescence is carried out to multiple wide spectral light-emitting diode with the pulse signal of the duty ratio of like combinations pattern drive.
Now, in each polychromatic source device, when the wide spectral light of each wide spectral light-emitting diode carries out look conversion by the assorted transducer of correspondence, the brightness of light reduces with the brightness ratio corresponding to the look after conversion, the light of the colors after conversion reaches the luminance balance corresponding to illuminant colour, obtains the light of the illuminant colour expected.Therefore, drive by means of only carrying out luminescence to each wide spectral light-emitting diode of each polychromatic source device respectively with the pulse signal of the duty ratio corresponding to illuminant colour, even if the illuminant colour of the reality at each position not to be compared each other the fine setting operation of the duty ratio of carrying out pulse signal, the illuminant colour on also making the illuminant colour at each position and controlling is consistent.
Polychromatic source device involved by form of the present invention, does not carry out the fine setting operation of the duty ratio of the pulse signal when luminescences such as blank level adjustment drive, can obtain the variable illuminant colour with the solid colour controlled.
Accompanying drawing explanation
Fig. 1 is the key diagram of the configuration of the vehicle interior lighting device illustrated involved by execution mode.
Fig. 2 is the block diagram that the summary of the polychromatic source device that the lamp of the vehicle interior lighting device illustrated involved by execution mode uses is formed.
Embodiment
Below, with reference to Fig. 1,2, the vehicle interior lighting device involved by execution mode is described.
As shown in Figure 1, be provided with the lamp 11 of room light near the center pillar 7 of driver's seat 3 side in vehicle 1, near the center pillar 9 of front passenger's seat 5 side, be provided with the lamp 13 of room light.Each lamp 11,13 can make illuminant colour be changed to arbitrary color respectively.And the light source of this lamp 11,13 uses polychromatic source device.
With reference to the block diagram of Fig. 2, illustrate that the summary of the polychromatic source device that the light source of each lamp 11,13 uses is formed.Polychromatic source device 20 involved by execution mode is controlled by controller 30.The microcomputer that controller 30 is such as controlled by subsidiary engines such as the ECU be mounted in vehicle 1 (ElectronicControlUnit, electronic control unit) is formed.
Polychromatic source device 20 comprises: 3 drive division 21a-21cs and 3 the illuminating part 23a-23cs corresponding with the colors of 3 primary colors of light and R (red), G (green), B (indigo plant); And the light that each illuminating part 23a-23c sends is mixed and the prism 25 penetrated.
The light of the colors of each illuminating part 23a-23c injection R (red), G (green), B (indigo plant), comprises wide spectral light-emitting diode 231a-231c and look transducer 232a-232c.Each wide spectral light-emitting diode 231a-231c uses independent diode chip for backlight unit to send wide spectral light Bs respectively, such as use white, milky white (incandescent lamp bulb look) etc. with the light-emitting diode of wide spectral luminescence, in luminescent spectrum, comprise the colors of R (red), G (green), B (indigo plant).
The brightness of the wide spectral light Bs that each wide spectral light-emitting diode 231a-231c penetrates is determined by the duty ratio of pulse signal, and this pulse signal is applied to wide spectral light-emitting diode 231a-231c's as drive singal by each drive division 21a-21c of correspondence.The duty ratio of the pulse signal of each drive division 21a-21c is determined by controller 30.
In addition, each wide spectral light-emitting diode 231a-231c is used in same Intensity LEDs when driving with same duty ratio, and the luminance deviation between individuality is minimum, the light-emitting diode chip for backlight unit of batch production product.
The wide spectral light Bs of wide spectral light-emitting diode 231a-231c is converted to light Br, Bg, Bb of colors of R (red), G (green), B (indigo plant) by assorted transducer 232a-232c respectively.
Assorted transducer 232a-232c such as can utilize by with the exciting light of fluorophor carry out colour mixture to obtain the color after changing look transducer, utilize band pass filter obtain the color after changing look transducer, utilize Frequency Shift Keying) control (FSK) to obtain the various transducers such as the look transducer of the color after changing.
Prism 25 is optical elements, guides the light from incident section 25a incidence and penetrate from injection part 25b in inside.Incident section 25a also can be provided with 3 with light Br, Bg, Bb of the colors from each illuminating part 23a-23c accordingly.Reflect in the inner utilization of prism 25 from light Br, Bg, Bb of the colors of incident section 25a incidence, reflects guided is to same light path.Light Br, Bg, Bb assorted in same light path are mixed, the light B of the color of mixing injects to the outside of prism 25 from injection part 25b.
Next, the action (effect) of each illuminating part 23a-23c of the polychromatic source device 20 involved by execution mode is described.
The light-emitting diode chip for backlight unit that each wide spectral light-emitting diode 231a-231c uses is the batch production product of same specification, and with same Intensity LEDs when driving with same duty ratio, the luminance deviation between individuality is minimum.Therefore, the brightness of wide spectral light Bs of each wide spectral light-emitting diode 231a-231c driven by the pulse signal luminescence from each drive division 21a-21c is the value corresponding to the duty ratio of this pulse signal.
In addition, in look transducer 232a-232c, leniently the frequency component of the wide spectral light Bs of spectral luminescence diode 231a-231c intercept respectively the color except R (red) frequency component, except the frequency component of the color of G (green), the frequency component except other colors of B (indigo plant).Thus, wide spectral light Bs is converted to light Br, Bg, Bb of colors of R (red), G (green), B (indigo plant) respectively.
Therefore, utilize assorted transducer 232a-232c be converted to R (red), G (green), B (indigo plant) the brightness of brightness ratio wide spectral light Bs of light Br, Bg, Bb of colors little.And the brightness reduced due to look conversion decides according to each frequency component of the color beyond the R (red) of the leniently frequency component obstruct of spectral light Bs, the color beyond G (green), the color beyond B (indigo plant) respectively.
Therefore, the brightness ratio utilizing assorted transducer 232a-232c to carry out the light before and after look conversion to the colors of R (red), G (green), B (indigo plant) respectively according to be included in R (red), G (green), B (indigo plant) colors light Br, Bg, Bb in frequency component determine individually.In other words, the frequency component of the color beyond R (red), the G (green) of the leniently frequency component obstruct of spectral light Bs when the brightness ratio of the light before and after look conversion is changed according to look, the colors of B (indigo plant) determines individually.
Like this, the wide spectral light Bs of each wide spectral light-emitting diode 231a-231c becomes the brightness corresponding to the duty ratio of the pulse signal from each drive division 21a-21c, and in addition, the brightness ratio of the light before and after look conversion decides according to the color after conversion.Therefore, the brightness of light Br, Bg, the Bb of the colors after utilizing assorted transducer 232a-232c to change determines uniquely according to the color (frequency) after being applied to the duty ratio of pulse signal of corresponding each wide spectral light-emitting diode 231a-231c and conversion.
And, in order to light Br, Bg, Bb mixing of R (red), the G (green) after look conversion, B (indigo plant) being obtained the light B of the illuminant colour expected, need to make assorted light Br, Bg, Bb be respectively the luminance balance corresponding to illuminant colour.
Therefore, in the polychromatic source device 20 of present embodiment, consider to utilize assorted transducer 232a-232c to carry out the brightness ratio of look conversion front and back, utilize controller 30 to calculate the brightness of each wide spectral light-emitting diode 231a-231c, make each smooth Br, Bg, Bb of R (red), G (green), B (indigo plant) reach the luminance balance corresponding to illuminant colour.
And controller 30 each wide spectral light-emitting diode 231a-231c corresponding to the pulse signal of the duty ratio corresponding to the brightness calculated exports to from each drive division 21a-21c.Thus, with the luminance balance corresponding with illuminant colour, respectively from light Br, Bg, Bb of the colors of each illuminating part 23a-23c injection R (red), G (green), B (indigo plant).
Therefore, the duty ratio of the pulse signal that controller 30 is exported by each drive division 21a-21c changes the luminance balance of light Br, Bg, Bb of R (red), G (green), B (indigo plant), thus can change arbitrarily the color of the light B penetrated from prism 25.
Like this, in the polychromatic source device 20 involved by execution mode, the look from wide spectral light Bs is utilized to change and generate light Br, Bg, Bb of R (red), G (green), B (indigo plant), the batch production product that the light-emitting diode chip for backlight unit sending each wide spectral light-emitting diode 231a-231c of wide spectral light Bs uses the luminance deviation between individuality minimum.
Therefore, make the duty ratio that the duty ratio being applied to the pulse signal of corresponding each wide spectral light-emitting diode 231a-231c from each drive division 21a-21c is R (red), light Br, Bg, Bb of G (green), B (indigo plant) reach the luminance balance corresponding to the illuminant colour expected, thus the illuminant colour reliably becoming expectation from the color of the light B of prism 25 mixing injection can be made.
Thereby, it is possible to do not need in fact with the light B etc. that camera shooting is penetrated from prism 25, confirm the illuminant colour on the drived control corresponding to duty ratio of the pulse signal of each drive division 21a-21c, consistent with the color of the light B of the reality penetrated from prism 25.Namely, each drive division 21a-21c only suitably sets the duty ratio being applied to the pulse signal of each wide spectral light-emitting diode 231a-231c, even if do not carry out the fine setting operation of the duty ratio of such pulse signal such as blank level adjustment, the light B of the color expected in fact also can be obtained.
And in the present embodiment, in each polychromatic source device 20 that the lamp 11,13 of the center pillar 7,9 of the left and right of vehicle 1 uses, controller 30 utilizes each drive division 21a-21c to carry out luminescence to each wide spectral light-emitting diode 231a-231c respectively and drives.Therefore, with each wide spectral light-emitting diode 231a-231c of pulse signal to each polychromatic source device 20 of the identical combination of the pattern of duty ratio carry out luminescence drive time, penetrate the light of identical illuminant colour respectively from each prism 25.
Now, in each polychromatic source device 20,20, the light-emitting diode chip for backlight unit of the batch production product that each wide spectral light-emitting diode 231a-231c uses the luminance deviation between individuality minimum.Therefore, in each polychromatic source device 20,20, when carrying out luminescence driving with the pulse signal of the duty cycle mode of like combinations to each wide spectral light-emitting diode 231a-231c, the light penetrated respectively from each illuminating part 23a-23c is the identical illuminant colour not having color sensation difference in left and right.
Therefore, in multiple (in present embodiment being 2) polychromatic source device 20, carry out luminescence with the pulse signal that the integrated mode of duty ratio is identical to each wide spectral light-emitting diode 231a-231c to drive, even if thus the duty cycle trimmer of not pulse signals, the illuminant colour that prism 25 also can be used to mix is consistent with the illuminant colour of expectation.
In addition, in the present embodiment, the formation of the example of explanation be with prism 25 mix R (red), G (green), each smooth Br, Bg, Bb of B (indigo plant) obtain the light B of random color.But, also 1 color in R (red), G (green), B (indigo plant) can be omitted, or replace with the light of its allochromatic colour (such as milky (incandescent bulb look)), or the illuminant colour etc. that the light obtaining R (red), G (green), B (indigo plant) being added other colors and blends more than 4 looks is expected, can change arbitrarily.
In addition, in the present embodiment, the situation of explanation is the light source use polychromatic source device 20 of the lamp 11,13 near the center pillar 7,9 of the left and right of vehicle 1.But the present invention also can be applicable to use number to be single or the polychromatic source device of more than 3.
And, in the present embodiment, describe the situation that polychromatic source device 20 comprises prism 25, but also can form polychromatic source device with drive division 21a-21c and illuminating part 23a-23c and separate with prism 25, can also all comprise controller 30 to form polychromatic source device with or without prism 25.
Industrial practicality
The present invention is used for by the multiple wide spectral light-emitting diode of indivedual drived control, thus the polychromatic source device that illuminant colour is changed arbitrarily is exceedingly useful.
Claims (3)
1. a polychromatic source device, by individually carrying out drived control to multiple light-emitting diode, thus the illuminant colour of the light being mixed with each light-emitting diode is changed, the feature of described polychromatic source device is, comprising:
Multiple wide spectral light-emitting diode, it uses the diode chip for backlight unit of same specification to send wide spectral light;
Multiple look transducer, the wide spectral light that described each wide spectral light-emitting diode sends respectively is converted to the mutually different light of color in 3 primary colors of the light forming described illuminant colour by respectively; And
Drive division, its with utilize described assorted transducer carry out look change before and after the pulse signal of duty ratio corresponding to the brightness ratio of light, drive the described each wide spectral light-emitting diode corresponding with described assorted transducer respectively, described brightness ratio determines according to the color after utilizing described assorted transducer to change in advance.
2. polychromatic source device as claimed in claim 1, is characterized in that,
Also comprise combining optical, the light after utilizing described assorted transducer to carry out look conversion to guide in same light path and mixes by it, and the light as described illuminant colour penetrates.
3. polychromatic source device as claimed in claim 1 or 2, is characterized in that,
The light of the described illuminant colour be made up of the light after utilizing described assorted transducer to carry out look conversion is penetrated the multiple positions to vehicle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013103799A JP2014223844A (en) | 2013-05-16 | 2013-05-16 | Multicolor light source device |
| JP2013-103799 | 2013-05-16 | ||
| PCT/JP2014/061244 WO2014185226A1 (en) | 2013-05-16 | 2014-04-22 | Multiple color light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105230127A true CN105230127A (en) | 2016-01-06 |
Family
ID=51898206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480027571.2A Pending CN105230127A (en) | 2013-05-16 | 2014-04-22 | Polychromatic source device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2014223844A (en) |
| CN (1) | CN105230127A (en) |
| DE (1) | DE112014002422T5 (en) |
| WO (1) | WO2014185226A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6307533B2 (en) * | 2016-02-05 | 2018-04-04 | 矢崎総業株式会社 | Interior lighting device |
| DE102017111323A1 (en) | 2017-05-24 | 2018-11-29 | HELLA GmbH & Co. KGaA | Communication device for a vehicle, in particular for an autonomous or semi-autonomous vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694539A (en) * | 2005-04-08 | 2005-11-09 | 袁宁 | Manufacturing method of color visible light-focusing line and its device |
| JP2010085725A (en) * | 2008-09-30 | 2010-04-15 | Casio Computer Co Ltd | Projection apparatus, projection method and program |
| JP2012108337A (en) * | 2010-11-18 | 2012-06-07 | Mitsubishi Electric Corp | Projection type image display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4375270B2 (en) * | 2005-02-08 | 2009-12-02 | 日亜化学工業株式会社 | Light emitting device |
| JP2007122950A (en) * | 2005-10-26 | 2007-05-17 | Fujikura Ltd | Lighting system |
| JP2009090929A (en) * | 2007-10-11 | 2009-04-30 | Kojima Press Co Ltd | Vehicular illumination device |
| JP2011159832A (en) * | 2010-02-01 | 2011-08-18 | Yamaguchi Univ | Semiconductor light emitting device |
-
2013
- 2013-05-16 JP JP2013103799A patent/JP2014223844A/en not_active Abandoned
-
2014
- 2014-04-22 DE DE112014002422.8T patent/DE112014002422T5/en not_active Withdrawn
- 2014-04-22 CN CN201480027571.2A patent/CN105230127A/en active Pending
- 2014-04-22 WO PCT/JP2014/061244 patent/WO2014185226A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694539A (en) * | 2005-04-08 | 2005-11-09 | 袁宁 | Manufacturing method of color visible light-focusing line and its device |
| JP2010085725A (en) * | 2008-09-30 | 2010-04-15 | Casio Computer Co Ltd | Projection apparatus, projection method and program |
| JP2012108337A (en) * | 2010-11-18 | 2012-06-07 | Mitsubishi Electric Corp | Projection type image display device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112014002422T5 (en) | 2016-02-25 |
| WO2014185226A1 (en) | 2014-11-20 |
| JP2014223844A (en) | 2014-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101309536B (en) | Lighting device, illumination device and liquid crystal display apparatus | |
| US7256557B2 (en) | System and method for producing white light using a combination of phosphor-converted white LEDs and non-phosphor-converted color LEDs | |
| US7009343B2 (en) | System and method for producing white light using LEDs | |
| US8823630B2 (en) | Systems and methods for providing color management control in a lighting panel | |
| KR100848420B1 (en) | Surface illuminator and liquid crystal display having the same | |
| TW200624706A (en) | Illumination source, illumination system, and dimming control method | |
| JP2007227681A (en) | White lighting system using light-emitting diode | |
| CN104756251A (en) | Light-emitting diode module | |
| CN103874280A (en) | Lighting Apparatus and Lighting System | |
| CN101889479A (en) | Method and arrangement for adjusting a color location, and illumination system | |
| CN105230127A (en) | Polychromatic source device | |
| TWI481305B (en) | Light-emitting module, led driving circuit, and led driving method | |
| CN103283304A (en) | Light-emitting diode module comprising a first component and a second component and method for producing said module | |
| JP5102453B2 (en) | White illumination device using light emitting diode | |
| US20080013312A1 (en) | Method for modulating warm color light | |
| US11570863B2 (en) | Lighting device for generating a white mixed light with controllable spectral characteristics | |
| CN109539188A (en) | A kind of light source | |
| CN103025030B (en) | LED tunnel illumination light adjusting system | |
| US20230262855A1 (en) | Illuminant device for emitting light of a continuously adjustable colour, in particular for individualizing and/or illuminating an interior space | |
| JP2007080532A (en) | Led lighting device | |
| KR20190023240A (en) | Light system capable of adjusting brightness, color temperature and saturation value | |
| KR102313839B1 (en) | White balance control method of rgb led for vehicle interior mood lighting | |
| CN106409216B (en) | A kind of all-colour LED control device and method suitable for passenger information system | |
| US20240098863A1 (en) | Lighting control method, lighting control device and lighting device | |
| CN205790060U (en) | light emitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |
|
| WD01 | Invention patent application deemed withdrawn after publication |