WO2003019072A9 - Eclairage par del a temperature de couleur reglable - Google Patents
Eclairage par del a temperature de couleur reglableInfo
- Publication number
- WO2003019072A9 WO2003019072A9 PCT/JP2002/008512 JP0208512W WO03019072A9 WO 2003019072 A9 WO2003019072 A9 WO 2003019072A9 JP 0208512 W JP0208512 W JP 0208512W WO 03019072 A9 WO03019072 A9 WO 03019072A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- led
- light source
- color temperature
- color
- adjusted
- Prior art date
Links
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
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
-
- 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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/40—Hand grips
- F21V21/403—Hand grips for operation or dentist lamps
-
- 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
-
- 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]
- H05B45/30—Driver circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/308—Lamp handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/309—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using white LEDs
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/20—Lighting for medical use
- F21W2131/205—Lighting for medical use for operating theatres
-
- 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]
Definitions
- the present invention relates to an LED lamp with adjustable color temperature, particularly an LED lamp with adjustable color temperature, which is useful for surgical lamps used for surgical lighting. It is suitable for a makeup lamp that can evaluate the color and a living room lamp that can select the color temperature of a desired atmosphere.
- halogen lamps are used as surgical surgical lights.
- This halogen lamp is operated by a DC power supply without flickering, and is set to a color temperature of about 400 ° K, which is optimal for the Japanese eyes.
- the halogen lamp is used.
- a cold mirror that reflects 90% or more of visible light and transmits 90% or more of heat rays to the back side is placed on the back of the halogen lamp, or light from the halogen lamp is once on the back. It is designed to absorb the heat rays by using a cold filter that reflects, transmits more than 90% of visible light rays, and transmits almost no heat rays, so that it does not affect the operating room in the direction of light irradiation.
- the present inventor proposed the use of a white LED with extremely low heat generation and a long-term durability (100,000 hours) that does not generate flicker as a means to solve the former problem of surgical light for surgical operation.
- adjustment of the color temperature which is the latter problem for white LEDs, involves adjustment of the emission wavelength of the blue LED as a light source and adjustment of the phosphor composition associated therewith, which is not easy. Disclosure of the invention
- an LED of a correction color having a peak wavelength in a specific wavelength range is prepared, and by mixing with the LED, not only the color temperature but also the color rendering can be corrected. This led to the completion of the present invention.
- the minimum desired color temperature Xmin ( ⁇ K), for example, from 300 ° K. to the maximum desired color temperature Xmax ( ⁇ K), for example, 800 ° C.
- a white LED light source set to a predetermined intermediate color temperature X between K, for example, 500 ° K, and an extension of the line connecting the minimum color temperature Xmin and the intermediate color temperature X
- a first correction LED light source having an orange light emission spectrum and having a peak wavelength located in the vicinity of the intersection L l (nm) on the long wavelength side, for example, from 585 to 610 nm; The peak wavelength is located in the vicinity of the wavelength Ml (nm) point on the chromaticity diagram, which intersects with the extension of the line connecting the desired color temperature Xmax and the set color temperature X, for example, from 470 to 490 nm.
- a second correction LED light source having a blue light emitting spectrum is determined by the color mixing ratio of the white LED light source and the first or second correction LED light source.
- the color temperature refers to a color temperature assumed on blackbody radiation formed on a chromaticity diagram and a color temperature similar thereto.
- the second invention sets the white LED light source to a desired minimum color temperature Xlow (-K).
- the white LED light source and the minimum color temperature Xlow and at least one desired setting are set.
- a third correction LED light source having a light emission spectrum whose peak wavelength is located near the intersection M2 (nm) on the shorter wavelength side on the chromaticity diagram on the chromaticity diagram that intersects the extension of the line connecting the constant color temperature X;
- the color temperature of the white LED light source can be adjusted to a higher color temperature direction by adjusting the color mixture ratio of the white LED light source and the third correction LED light source. LED lights.
- the white LED light source is set to a desired maximum color temperature Xhigh (-K), and the white LED light source is connected to the maximum color temperature Xhigh and at least one desired color temperature X.
- a fourth correction LED light source having an emission spectrum whose peak wavelength is located in the vicinity of the intersection L 2 (nm) on the long wavelength side on the chromaticity diagram that intersects with the extension of the line segment.
- a color temperature adjustable LED lamp characterized in that the set color temperature of the white LED light source can be adjusted to a lower color temperature direction by a color mixing ratio with the correction LED light source.
- FIG. 1 is a graph showing a method of setting and adjusting a color temperature on a chromaticity diagram.
- FIG. 2 is a schematic view showing a method of using an auxiliary light source in an operating table.
- FIG. 3 is a schematic diagram showing a method of using an auxiliary light source with an operating light.
- FIG. 4 is a plan view showing a portion where LEDs are arranged in the example.
- FIG. 5 is a plan view showing the configuration of the LED head in the embodiment.
- FIG. 6 is a cross-sectional view showing an attached state of the LED head in the embodiment.
- FIG. 7 is a graph showing a typical spectrum of a commercially available white LED.
- FIG. 8 is a graph showing a spectrum of Example 1 of high color rendering properties that can be realized by the LED lamp of the present invention.
- FIG. 9 is a graph showing a spectrum of Example 2 of high color rendering properties that can be realized by the LED lamp of the present invention.
- Fig. 10 shows a method of uniformly mixing LED lights using a spherical reflection mirror to set a predetermined illuminance and aperture, and a partially enlarged view shows a specific example of white LEDs used in the LED lights It is a perspective view.
- Fig. 11 shows a schematic cross-sectional view (b) when the present invention is applied to a downlight.
- a) shows a schematic sectional view of a conventional improved type.
- FIG. 12 is a perspective view for explaining a control method when the LED lamp of the present invention is used in a conventional living room light control system.
- Figure 13 is a graph showing the relationship between color temperature and illuminance during the day.
- the white LED light source used in the present invention an LED whose emission peak wavelength is adjusted to a blue region of 400 to 490 nm, preferably 430 to 470 nm, and which is excited by the LED, It is preferable to use a combination of a YAG phosphor whose fluorescence peak wavelength is adjusted in the yellow-green region of 530 to 580 nm (for example, FIG. 7). If necessary, a wavelength of about 400 nm near the ultraviolet region of the LED can be used, and white light can be emitted by selecting the phosphor.
- Fig. 1 To set the color temperature of the white LED light source, as shown in Fig. 1, connect the peak wavelength point of the blue LED to the desired color temperature in the figure, extend the extension line, and cross the longer wavelength side on the chromaticity diagram. Can determine the peak wavelength of the fluorescent spectrum, determine the composition of the phosphor, and realize the combination of the two. Alternatively, set the center color temperature on the chromaticity diagram, extend it to the left and right, set the short wavelength side of the intersection of the extended line and the chromaticity diagram to the peak wavelength of the LED, and the long wavelength side to the phosphor wavelength. White LEDs can be designed based on the peak wavelength.
- the LED that can adjust the set color temperature of the white LED light source in the direction of the maximum desired color temperature by adjusting the color mixing ratio with the white LED light source preferably has an emission peak in a blue region of 430 to 470 nm. A blue LED with tuned wavelength is selected.
- the LED which can adjust the set color temperature of the white LED light source in the direction of the desired color temperature at the minimum according to the color mixture ratio with the white LED light source is preferably 585 to 63, preferably 585 to 60.
- An orange LED whose peak wavelength has been adjusted to the orange region of 0 nm is selected.
- the overall light emission is achieved by mixing the main light source LED and the auxiliary light source LED.
- the light color temperature can be adjusted in the range of 300 to 800 Kelvin.
- the color mixture of the main light source LED is determined by the ratio of the transmission spectrum intensity (or area) of the YAG phosphor layer of the light source LED to the emission spectrum intensity (or area) of the YAG phosphor layer. : 1 to 1: 4: Various spectra have been obtained. (For example, a commercially available Nichia white LED shows the spectrum in Fig. 7). As the amount of phosphor increases around this spectrum, the spectrum in the blue region decreases, and a color mixture slightly yellowish is obtained. Conversely, when the spectrum of the LED in the blue region increases, a slightly bluish color mixture is obtained. Therefore, those skilled in the art can set the color temperature in consideration of the spectrum distribution.
- one or more auxiliary LED whose emission peak wavelength is adjusted in the non-visible region is appropriately dispersed and arranged in the above main light source LED group.
- the color temperature of the filter transmission wavelength is in the range of 300 to 800 Kelvin by mixing the light emission from the main light source LED and the fluorescent light emission from the filter. It is possible to adjust it. Further, by providing a color temperature conversion filter covering the white LED of the main light source, the color temperature of the emission wavelength can be adjusted to a range of 300 to 800 Kelvin.
- a white light source can be obtained as follows.
- the first alternative configuration consists of a first blue LED whose emission peak wavelength is adjusted in the blue region of 430 to 470 nm, and a peak wavelength in the yellow-green region of 530 to 570 nm.
- the adjusted second LED and the third LED whose peak wavelength is adjusted in the orange region of 585 to 600 nm, preferably 585 to 600 nm, produce white by color mixing as a whole. It may be formed.
- the first and third LEDs are mainly contained in the second LED group. D is distributed so as to adjust the relative radiant intensity of the first LED or the third LED with respect to the second LED, so that the overall color mixture temperature can be as high as 300 to 800.
- the arrangement of the first and third LEDs in the second LED group is preferably 1 ⁇ 1: 3: 2 soil 1 as a whole. Although it depends on the half width, when the wavelength of each region is a relatively narrow wavelength, it is preferable that the light emission peaks of each region are dispersed and arranged so as to have a ratio of 1: 3: 2.
- the second alternative configuration is a main light source LED whose emission peak wavelength is adjusted to the blue region of 430 to 470 nm, and the emission peak wavelength is adjusted to the invisible region in the main light source LED group.
- a YAG phosphor that is excited by the main light source LED and emits a fluorescent light having a peak wavelength in a yellow-green region of 530 to 570 nm is provided on a filter that covers the LED while distributing the capture LED appropriately.
- a fluorescent material that emits fluorescent light is included, thereby adjusting the LED intensity of the main light source and the LED intensity of the color catcher. Adjustable to the range.
- the spectra in FIGS. 8 and 9 can be formed by not only capturing the orange LED with the white LED light source but also capturing the color using the green LED.
- the difference between the spectrum forming methods in FIGS. 8 and 9 is due to the difference in the amount of the YAG phosphor used for the blue LED and the difference in the amount of color captured by the orange LED.
- the color rendering can be improved by capturing the color with the green LED.
- changing the color temperature of a white LED by using a predetermined blue LED light source or orange LED light source as an auxiliary light source does not impair color rendering, but rather improves it. This is preferable because a change in color temperature can be obtained.
- the present invention can be applied by providing a dimmer connected to a transformer and supplying the main light source LED and the color catching LED at a predetermined DC voltage, respectively.
- the base to be connected and the base are connected, and the main light source LED and the color catching LED are set to the specified DC voltage respectively. It can be applied by providing a dimmer that supplies the light.
- the LED lamp of the present invention In the living room, it is preferable to use the LED lamp of the present invention as a down light. As shown in Fig. 11, in conventional downlights, heat insulation with heat insulating material is essential even if it is arranged diagonally (a) .However, since LED lamps generate almost no heat, they must be flat. It can be installed, for example, embedded in a ceiling panel. When applied to a system for remote control of existing living room lights, the following settings can be made.
- the LED light of the present invention can be applied to each of the lighting lamps I-1-1 to I-4 and ⁇ -1-1-4.
- the appropriate color temperature for each scene is set in consideration of the season, morning, daytime, and night, and the lighting schedule is determined by combining these.
- I-1 to I_4 Living LED lamp
- ⁇ -1, ⁇ -2, ⁇ -4 LED downlight
- ⁇ -3 Ceiling LED lamp.
- this method starts the LED dimming 30 minutes before the wake-up time.
- a relaxed rhythm like the morning sun it gradually brightens, and this light stimulates the brain through the eyelids, gradually leading to an awake state.
- the color temperature is higher, the illuminance is higher, and the brighter light can encourage a clearer awakening.
- low color temperature light can create a calm space and calm the mind.
- Color temperature and illuminance can be automatically or appropriately selected according to the preparation time, the initial stage of the operation, the middle stage of the operation, the end of the operation, and the rest period.
- Figure 13 is a graph showing the relationship between color temperature and illuminance during the day.
- the substrate on which the main light source LED and the color catching LED are mounted may be provided with a spherical reflection mirror to perform appropriate light collection.
- the lens configuration on the front side may be considered so that light from various LEDs is mixed well. In this way, light from various LEDs can be mixed uniformly.
- Nichia's NS CX 190 D white LED which is currently under development, will yield approximately 140 LEDs for a 2 Ocm diameter aperture and a 25 cm diameter aperture. Approximately 210 LEDs can provide an illuminance of 100,000 lux. LED lighting minimizes heat generation and has a long service life, providing optimal conditions for surgical operations.
- auxiliary light source As the auxiliary light source, it is preferable that the irradiation direction can be easily changed in order to assist the operating light illumination.
- an auxiliary light source whose irradiation direction can be easily converted can be provided.
- FIG. 2 there is an existing bar 11 at one end of the operating table 10, so that a power to attach an LED auxiliary light source, and an existing surgical light as shown in FIG. 20 can be attached to the handle portion 21 protruding below the center.
- This LED assist light source device 30 embeds and forms an LED light source 32 consisting of several LEDs at the tip of a flexible tube 31, while a battery is connected in series at the rear end and a DC voltage source of around 4 V It is preferable that the LED light source 32 is configured to be connected to the LED light source 32.
- existing fixing mechanisms such as screw-in fixing and scissor fixing may be adopted. According to such an auxiliary light source, the main light source of the operating light can be assisted, and the illuminance of a particularly necessary part can be improved. Moreover, since there is almost no fever, it does not hinder the operation of the operator.
- a white L EDO with a color temperature of about 500 ° K is constructed by combining with an AG phosphor.
- a first correction light source consisting of a blue LED (B) having an active layer of InG aN whose emission peak wavelength has been adjusted to about 480 nm in a blue region of about 480 nm, and about 590 nm
- a second light source comprising an orange LED (Am) having an active layer of A1InGaP whose peak wavelength is adjusted to an orange region of nm is prepared.
- 31 of these LEDs are arranged on a substrate.
- Six orange LEDs (Am) are alternately arranged at positions (5,12,2,3,27,20,9).
- this LED lamp 41 is connected to a DC power supply with 6 blue LEDs (B) and 6 orange LEDs (Am) via fixed or variable resistors 44 so that the illuminance can be adjusted.
- the white LED is directly connected to a DC power supply (3.6 to 4.5V). The connection method may be changed according to the power supply voltage.
- the color temperature of the emitted light can be adjusted as a whole in the range of 300 to 800 Kelvin by the color mixture of the main light source LED and the auxiliary light source LED. Lighting the orange LED appropriately improves color rendering, but lowers the color temperature. Therefore, by balancing the lighting of the blue LED with the color LED, both color temperature and color rendering can be adjusted.
- the main light source is set to the intermediate color temperature, and the color temperature is set lower by the correction light source.
- the color temperature of the main light source was set to about 800 ° K, and the color temperature was adjusted to the lower direction using an orange LED of about 590 nm as the correction light source. You may do it.
- the color temperature of the main light source may be set to about 300 ° K, and the color temperature may be adjusted in a higher direction using a blue LED of about 480 nm as a correction light source. In this case, the color may be adjusted while appropriately mixing the orange color according to the degree of color rendering.
- the following program shows the procedure for adjusting the color temperature depending on the operation site.
- the second program shows the case of creating a white color light source by mixing blue LED, yellow LED, and orange LED, and adjusting the intensity of blue or orange to correct the color temperature.
- the color looks highly saturated.Therefore, the blue region rises from 450 nm to the yellow region 550 nm, and then falls down to 600 nm. It is possible to form a spectrum that rises again from near 0 nm.
- the color temperature setting of the operating light can be easily achieved at the same time by applying the remote control system shown in Fig. 12 and setting each scene. Can be.
- ADVANTAGE OF THE INVENTION According to this invention, it can adjust to white light emission of a different color temperature by correcting white light emission by white LED or LED mixed color.
- 8000K thoracic surgery 6000K: abdomen Cavity surgery 5000K: Orthopedic surgery 4000K and color temperature can be set depending on the surgical site, and since orange color is used as the capturing color, it can have excellent color rendering properties.
- a surgical operation can be performed according to the color temperature desired by the operator, and since there is almost no heat generation, a comfortable operation environment can be formed.
- correlated color temperature 6700K cool color (cool atmosphere, refreshing atmosphere)
- correlated color temperature 5000K natural color (natural atmosphere)
- correlated color temperature By changing the color temperature of the lighting in the same room as the 3000 K warm color (calm atmosphere), a different atmosphere can be created.
- the present invention can be recommended to be used as a cosmetic LED lamp whose color temperature setting plays an important role.
- a system in which a necessary situation is set for each scene the light amount of the auxiliary light source with respect to the main light source is manually or preferably automatically adjusted by a switch or a remote control, and a color temperature at a desired place can be selected. It can be easily used as a makeup lamp.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003523896A JP4146797B2 (ja) | 2001-08-23 | 2002-08-23 | 色温度が調整可能なled灯 |
EP02796356.0A EP1462711B1 (en) | 2001-08-23 | 2002-08-23 | Color temperature-regulable led light |
US10/487,528 US20040264193A1 (en) | 2001-08-23 | 2002-08-23 | Color temperature-regulable led light |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001252474 | 2001-08-23 | ||
JP2001-252474 | 2001-08-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003019072A1 WO2003019072A1 (fr) | 2003-03-06 |
WO2003019072A9 true WO2003019072A9 (fr) | 2003-11-20 |
Family
ID=19080942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/008512 WO2003019072A1 (fr) | 2001-08-23 | 2002-08-23 | Eclairage par del a temperature de couleur reglable |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040264193A1 (ja) |
EP (1) | EP1462711B1 (ja) |
JP (2) | JP4146797B2 (ja) |
CN (1) | CN100477297C (ja) |
PL (1) | PL373724A1 (ja) |
WO (1) | WO2003019072A1 (ja) |
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- 2002-08-23 CN CNB028208587A patent/CN100477297C/zh not_active Expired - Fee Related
- 2002-08-23 US US10/487,528 patent/US20040264193A1/en not_active Abandoned
- 2002-08-23 WO PCT/JP2002/008512 patent/WO2003019072A1/ja active Application Filing
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US9441793B2 (en) | 2006-12-01 | 2016-09-13 | Cree, Inc. | High efficiency lighting device including one or more solid state light emitters, and method of lighting |
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US9484329B2 (en) | 2008-10-24 | 2016-11-01 | Cree, Inc. | Light emitter array layout for color mixing |
Also Published As
Publication number | Publication date |
---|---|
EP1462711A1 (en) | 2004-09-29 |
JP4146797B2 (ja) | 2008-09-10 |
WO2003019072A1 (fr) | 2003-03-06 |
JP2008258169A (ja) | 2008-10-23 |
JP4774076B2 (ja) | 2011-09-14 |
CN1575394A (zh) | 2005-02-02 |
EP1462711B1 (en) | 2014-12-03 |
JPWO2003019072A1 (ja) | 2004-12-16 |
US20040264193A1 (en) | 2004-12-30 |
PL373724A1 (en) | 2005-09-05 |
EP1462711A4 (en) | 2010-03-24 |
CN100477297C (zh) | 2009-04-08 |
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