JP2007173127A - Lighting device - Google Patents

Lighting device Download PDF

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JP2007173127A
JP2007173127A JP2005371100A JP2005371100A JP2007173127A JP 2007173127 A JP2007173127 A JP 2007173127A JP 2005371100 A JP2005371100 A JP 2005371100A JP 2005371100 A JP2005371100 A JP 2005371100A JP 2007173127 A JP2007173127 A JP 2007173127A
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leds
color
light
control unit
red
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Tetsuya Tanigawa
哲也 谷川
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of obtaining constant light color by mixing colors in spite of variations of LEDs. <P>SOLUTION: The lighting device is equipped with a plurality of LEDs 10a, 10b, 20a, 20b, 30a, 30b using a common type semiconductor, and band filters 11, 21, 31 covering the plurality of LEDs 10a, 10b, 20a, 20b, 30a, 30b and transmitting certain band light including an average wavelength of the LEDs 10a, 10b, 20a, 20b, 30a, 30b for every color. A color tone control part 4 totally controls a light output of each of the LEDs 10a, 10b, 20a, 20b, 30a, 30b for every color to be able to obtain desired color light by mixing colors. Since light of a stable wavelength for every color can be obtained by the band filters 11, 21, 31, the light color capable of obtaining by color mixing can be made constant in spite of variations of the LEDs 10a, 10b, 20a, 20b, 30a, 30b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、発光ダイオード（ＬＥＤ）を光源として用いた照明装置に関するものである。   The present invention relates to a lighting device using a light emitting diode (LED) as a light source.

従来から、発光ダイオード（Light Emitting Diode：以下、「ＬＥＤ」と呼ぶ。）を光源として用いた照明装置として、赤色光を放射する赤色ＬＥＤと、緑色光を放射する緑色ＬＥＤと、青色光を放射する青色ＬＥＤといったように複数の色のＬＥＤを用い、これらの混色により白色光など種々の色調の光を得るものが提供されている（例えば、特許文献１参照）。
特表２００２−５３３８７０号公報 Conventionally, as an illumination device using a light emitting diode (hereinafter referred to as “LED”) as a light source, a red LED that emits red light, a green LED that emits green light, and a blue light are emitted. There are provided LEDs that use LEDs of a plurality of colors such as a blue LED and obtain light of various color tones such as white light by mixing these colors (for example, see Patent Document 1).
JP 2002-533870 A

ところで、同種同色のＬＥＤであっても、不純物の混入割合の誤差により、放射する光の波長にはばらつきがある。従って、同じように構成した上記照明装置の間で、各色の光出力の比率をどのように調整しても、混色後の光の色のばらつきを完全に解消することはできなかった。この光の色のばらつきは、白色光を得ようとした場合に特に顕著となる。   By the way, even if it is LED of the same kind same color, the wavelength of the light to radiate has dispersion | variation by the error of the mixing rate of an impurity. Therefore, no matter how the ratio of the light output of each color is adjusted between the illumination devices configured in the same manner, the variation in the color of the light after the color mixing cannot be completely eliminated. This variation in the color of light becomes particularly noticeable when white light is to be obtained.

本発明は上記事由に鑑みて為されたものであり、その目的は、ＬＥＤのばらつきに関わらず混色によって得られる光の色を一定とすることができる照明装置を提供することにある。   The present invention has been made in view of the above reasons, and an object of the present invention is to provide an illumination device that can make the color of light obtained by color mixing constant regardless of variations in LEDs.

請求項１の発明は、複数の色のＬＥＤを備える照明装置であって、用いられる半導体の種別が共通であってそれぞれ波長の異なる光を放射する複数個のＬＥＤと、前記複数個のＬＥＤを覆い前記複数個のＬＥＤの平均の波長を含む帯域の光を透過させる帯域フィルタとを色毎に備え、各色のＬＥＤの光出力を色毎に一括して制御する色調制御部を備えることを特徴とする。   The invention of claim 1 is an illumination device comprising a plurality of color LEDs, wherein a plurality of LEDs that radiate light having different wavelengths and a common type of semiconductor used, and the plurality of LEDs. And a band-pass filter that transmits light in a band including an average wavelength of the plurality of LEDs for each color, and a color tone control unit that collectively controls the light output of each color LED for each color. And

本発明によれば、各色の帯域フィルタにより色毎に安定した波長の光が得られるから、ＬＥＤのばらつきに関わらず混色によって得られる光の色を一定とすることができる。   According to the present invention, light having a stable wavelength for each color can be obtained by the band-pass filter for each color, so that the color of light obtained by color mixing can be made constant regardless of variations in LEDs.

請求項２の発明は、複数の色のＬＥＤを備える照明装置であって、用いられる半導体の種別が共通であってそれぞれ波長の異なる光を放射する複数個のＬＥＤと、前記複数個のＬＥＤの光の平均の波長が同種のＬＥＤ全体の平均の波長に一致するように前記複数個のＬＥＤ間の光出力の比率を制御する色制御部とを色毎に備え、各色のＬＥＤの光出力を色毎に一括して制御する色調制御部を備えることを特徴とする。   The invention of claim 2 is an illuminating device comprising LEDs of a plurality of colors, wherein a plurality of LEDs that radiate light having different wavelengths and a common type of semiconductor used, and the plurality of LEDs A color control unit that controls the ratio of the light output between the plurality of LEDs so that the average wavelength of the light matches the average wavelength of the whole LEDs of the same type, and the light output of each color LED It is characterized by including a color tone control unit that performs batch control for each color.

本発明によれば、各色制御部により色毎に全体として安定した波長の光が得られるから、ＬＥＤのばらつきに関わらず混色によって得られる光の色を一定とすることができる。   According to the present invention, since each color control unit can obtain light having a stable wavelength for each color as a whole, the color of light obtained by color mixing can be made constant regardless of variations in LEDs.

本発明によれば、帯域フィルタにより色毎に安定した波長の光が得られ、又は各色制御部により色毎に全体として安定した波長の光が得られるから、ＬＥＤのばらつきに関わらず混色によって得られる光の色を一定とすることができる。   According to the present invention, light having a stable wavelength for each color can be obtained by the bandpass filter, or light having a stable wavelength as a whole can be obtained for each color by each color control unit. The color of the emitted light can be made constant.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

（実施形態１）
本実施形態は、図１に示すように、用いられる半導体の種別が共通であってそれぞれ波長の異なる赤色光Ｒａ，Ｒｂを放射する複数個の赤色ＬＥＤ１０ａ，１０ｂと、赤色ＬＥＤ１０ａ，１０ｂを覆い赤色ＬＥＤ１０ａ，１０ｂの平均の波長を中心とする帯域の光を透過させる赤色帯域フィルタ１１と、用いられる半導体の種別が共通であってそれぞれ波長の異なる緑色光Ｇａ，Ｇｂを放射する複数個の緑色ＬＥＤ２０ａ，２０ｂと、緑色ＬＥＤ２０ａ，２０ｂを覆い緑色ＬＥＤ２０ａ，２０ｂの平均の波長を含む帯域の光を透過させる緑色帯域フィルタ２１と、用いられる半導体の種別が共通であってそれぞれ波長の異なる青色光Ｂａ，Ｂｂを放射する複数個の青色ＬＥＤ３０ａ，３０ｂと、青色ＬＥＤ３０ａ，３０ｂを覆い青色ＬＥＤ２０ａ，３０ｂの平均の波長を含む帯域の光を透過させる青色帯域フィルタ３１と、赤色帯域フィルタ１１を通過した光Ｒ０と緑色帯域フィルタ２１を通過した光Ｇ０と青色帯域フィルタ３１を通過した光Ｂ０との混色が白色となるように各赤色ＬＥＤ１０ａ，１０ｂと各緑色ＬＥＤ２０ａ，２０ｂと各青色ＬＥＤ３０ａ，３０ｂとの光出力を色毎に一括して制御する色調制御部４とを備える。色調制御部４としては、例えばマイコンを用いることができる。色調制御部４が光出力を制御する方法としては、ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂのオンオフのデューティ比を制御することにより光出力を制御してもよいし、ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂに供給する電流値を制御することにより光出力を制御してもよい。 (Embodiment 1)
In the present embodiment, as shown in FIG. 1, a plurality of red LEDs 10a and 10b that emit red light Ra and Rb having different wavelengths and having different types of semiconductors are used, and the red LEDs 10a and 10b are covered with red. The red band filter 11 that transmits light in the band centered on the average wavelength of the LEDs 10a and 10b and a plurality of green LEDs 20a that emit green light Ga and Gb having different types of semiconductors and having different wavelengths. , 20b, the green band filter 21 that covers the green LEDs 20a, 20b and transmits the light in the band including the average wavelength of the green LEDs 20a, 20b, and the blue light Ba, which has a common semiconductor type and has a different wavelength. A plurality of blue LEDs 30a, 30b that emit Bb, and a blue LED 2 that covers the blue LEDs 30a, 30b a blue band filter 31 that transmits light in a band including an average wavelength of a and 30b, light R0 that has passed through the red band filter 11, light G0 that has passed through the green band filter 21, and light B0 that has passed through the blue band filter 31 And a color tone control unit 4 that collectively controls the light output of each of the red LEDs 10a and 10b, the green LEDs 20a and 20b, and the blue LEDs 30a and 30b for each color so that the mixed color of the LEDs is white. As the color tone control unit 4, for example, a microcomputer can be used. As a method of controlling the light output by the color tone control unit 4, the light output may be controlled by controlling the on / off duty ratio of the LEDs 10a, 10b, 20a, 20b, 30a, 30b, or the LEDs 10a, 10b, 20a. , 20b, 30a, 30b, the light output may be controlled by controlling the current value to be supplied.

各帯域フィルタ１１，２１，３１は、例えばＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂを覆うドーム形状としてもよいし、ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂをハウジング（図示せず）に設けた凹部に収納する場合には該凹部を閉塞する扁平な形状としてもよい。   Each band filter 11, 21, 31 may have a dome shape that covers, for example, the LEDs 10a, 10b, 20a, 20b, 30a, 30b, or the LEDs 10a, 10b, 20a, 20b, 30a, 30b in a housing (not shown). When it accommodates in the provided recessed part, it is good also as a flat shape which obstruct | occludes this recessed part.

ここで、本実施形態における各ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂは、製造時に波長毎に分別されている。そして、各赤色ＬＥＤ１０ａ，１０ｂと各緑色ＬＥＤ２０ａ，２０ｂと各青色ＬＥＤ３０ａ，３０ｂとは、各色について、一方のＬＥＤ１０ａ，２０ａ，３０ａを図２に示すように放射する光Ｒａ，Ｇａ，Ｂａの波長のピークλａが同種のＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂ全体の平均値λ０よりも低いものとし、他方を放射する光Ｒｂ，Ｇｂ，Ｂｂの波長のピークλｂが同種のＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂ全体の平均値λ０よりも高いものとしている。また、各ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂに一定の電力を供給したときの上記平均値λ０の波長での光出力の合計が色毎に一定となるように、各ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂは選択されている。   Here, each LED10a, 10b, 20a, 20b, 30a, 30b in this embodiment is classified for every wavelength at the time of manufacture. And each red LED 10a, 10b, each green LED 20a, 20b, and each blue LED 30a, 30b are the wavelength of the light Ra, Ga, Ba which radiates | emits one LED 10a, 20a, 30a as shown in FIG. 2 about each color. The peak λa is assumed to be lower than the average value λ0 of the whole LEDs 10a, 10b, 20a, 20b, 30a, 30b, and the wavelength λb of the light Rb, Gb, Bb radiating the other is the same type of LED 10a, 10b, 20a. , 20b, 30a, 30b as a whole is higher than the average value λ0. Further, each LED 10a, 10b, 20b, 20a, 20b, 30a, 30b is configured so that the total light output at the wavelength of the average value λ0 when the constant power is supplied is constant for each color. 20a, 20b, 30a, and 30b are selected.

上記構成によれば、帯域フィルタ１１，２１，３１を用いることで、赤色ＬＥＤ１０ａ，１０ｂや緑色ＬＥＤ２０ａ，２０ｂや青色ＬＥＤ３０ａ，３０ｂが放射する光の波長のばらつきが埋まることにより、これらのＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂのばらつきに関わらず混色によって得られる光の色を一定とすることができる。また、一定電力供給時の、波長の平均値λ０での光出力の合計を色毎に一定としていることにより、色調制御部４の動作を全ての照明装置で共通とすることができる。   According to the above configuration, by using the bandpass filters 11, 21, 31, the variation in the wavelength of light emitted from the red LEDs 10 a, 10 b, the green LEDs 20 a, 20 b, and the blue LEDs 30 a, 30 b is filled, so that these LEDs 10 a, 10 b , 20a, 20b, 30a, 30b, the color of the light obtained by the color mixture can be made constant. In addition, since the total light output at the wavelength average value λ0 when supplying constant power is constant for each color, the operation of the color tone control unit 4 can be made common to all the lighting devices.

（実施形態２）
本実施形態は、図３に示すように、用いられる半導体の種別が共通であってそれぞれ波長の異なる赤色光を放射する複数個の赤色ＬＥＤ１０ａ，１０ｂと、各赤色ＬＥＤ１０ａ，１０ｂの光出力を個別に制御しこれらの平均の波長が同種の赤色ＬＥＤ１０ａ，１０ｂの全体の平均の波長に一致するように赤色ＬＥＤ１０ａ，１０ｂ間の光出力の比率を維持する赤色制御部１２と、用いられる半導体の種別が共通であってそれぞれ波長の異なる緑色光を放射する複数個の緑色ＬＥＤ２０ａ，２０ｂと、各緑色ＬＥＤ２０ａ，２０ｂの光出力を個別に制御しこれらの平均の波長が同種の緑色ＬＥＤ２０ａ，２０ｂの全体の平均の波長に一致するように緑色ＬＥＤ２０ａ，２０ｂ間の光出力の比率を維持する緑色制御部２２と、用いられる半導体の種別が共通であってそれぞれ波長の異なる青色光を放射する複数個の青色ＬＥＤ３０ａ，３０ｂと、各青色ＬＥＤ３０ａ，３０ｂの光出力を個別に制御しこれらの平均の波長が同種の青色ＬＥＤ３０ａ，３０ｂの全体の平均の波長に一致するように青色ＬＥＤ３０ａ，３０ｂ間の光出力の比率を維持する青色制御部３２と、各赤色ＬＥＤ１０ａ，１０ｂと各緑色ＬＥＤ２０ａ，２０ｂと各青色ＬＥＤ３０ａ，３０ｂとの混色が白色となるように赤色制御部１２と緑色制御部２２と青色制御部３２とを個別に制御する色調制御部４とを備える。赤色制御部１２と緑色制御部２２と青色制御部３２と色調制御部４とは、例えば１チップのマイコンで構成することができる。 (Embodiment 2)
In the present embodiment, as shown in FIG. 3, a plurality of red LEDs 10a and 10b that emit red light having different wavelengths and having different types of semiconductors are used, and the light outputs of the red LEDs 10a and 10b are individually set. And a red control unit 12 that maintains the ratio of the light output between the red LEDs 10a and 10b so that the average wavelength of the red LEDs 10a and 10b coincides with the average wavelength of the same kind, and the type of semiconductor used The green LEDs 20a and 20b that emit green light having different wavelengths and the light outputs of the green LEDs 20a and 20b are individually controlled, and the average wavelength of these green LEDs 20a and 20b is the whole. A green control unit 22 that maintains the ratio of the light output between the green LEDs 20a and 20b so as to match the average wavelength of the A plurality of blue LEDs 30a and 30b that radiate blue light having different wavelengths, respectively, and the light outputs of the blue LEDs 30a and 30b are individually controlled, and the average wavelength of these blue LEDs 30a and 30b is the same. The color mixture of the blue controller 32 that maintains the light output ratio between the blue LEDs 30a and 30b so as to match the overall average wavelength, the red LEDs 10a and 10b, the green LEDs 20a and 20b, and the blue LEDs 30a and 30b is A color tone control unit 4 that individually controls the red control unit 12, the green control unit 22, and the blue control unit 32 so as to be white is provided. The red control unit 12, the green control unit 22, the blue control unit 32, and the color tone control unit 4 can be configured by, for example, a one-chip microcomputer.

ここで、各赤色ＬＥＤ１０ａ，１０ｂと各緑色ＬＥＤ２０ａ，２０ｂと各青色ＬＥＤ３０ａ，３０ｂとは、実施形態１と同様に、各色について、一方のＬＥＤ１０ａ，２０ａ，３０ａを図２に示すように放射する光の波長のピークλａが同種のＬＥＤの平均値λ０よりも低いものとし、他方のＬＥＤ１０ｂ，２０ｂ，３０ｂを放射する光の波長のピークλｂが同種のＬＥＤの平均値λ０よりも高いものとしている。   Here, each of the red LEDs 10a, 10b, each of the green LEDs 20a, 20b, and each of the blue LEDs 30a, 30b is light that emits one LED 10a, 20a, 30a for each color as shown in FIG. The wavelength peak λa is lower than the average value λ0 of the same type of LED, and the wavelength peak λb of the light emitted from the other LEDs 10b, 20b, 30b is higher than the average value λ0 of the same type of LED.

また、赤色ＬＥＤ１０ａ，１０ｂは、例えば図４に示すように、抵抗ｒａ，ｒｂとＦＥＴからなるスイッチング素子Ｑａ，Ｑｂとに直列に、電源Ｖａ、Ｖｂとグランドとの間に接続されており、赤色制御部１２は、スイッチング素子Ｑａ，Ｑｂをオンオフするデューティ比を制御することにより、赤色ＬＥＤ１０ａ，１０ｂの光出力を制御する。緑色制御部２２や青色制御部３２についても同様に構成することができる。   Further, for example, as shown in FIG. 4, the red LEDs 10a and 10b are connected in series between resistors ra and rb and switching elements Qa and Qb made of FETs, and between the power sources Va and Vb and the ground. The controller 12 controls the light output of the red LEDs 10a and 10b by controlling the duty ratio for turning on and off the switching elements Qa and Qb. The green control unit 22 and the blue control unit 32 can be similarly configured.

上記構成によれば、全体として色毎の平均的な波長の光を放射させるように各色についてＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂ間の光出力の比率が制御されているから、ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂのばらつきに関わらず混色によって得られる光の色を一定とすることができる。   According to the above configuration, since the ratio of the light output between the LEDs 10a, 10b, 20a, 20b, 30a, and 30b is controlled for each color so as to emit light having an average wavelength for each color as a whole, the LEDs 10a, Regardless of variations in 10b, 20a, 20b, 30a, and 30b, the color of light obtained by color mixing can be made constant.

なお、図４に示す回路構成では、抵抗ｒａ，ｒｂの抵抗値や電源Ｖａ，Ｖｂの電圧値をＬＥＤ１０ａ，１０ｂ毎に異ならせることによって、ＬＥＤ１０ａ，１０ｂ間の光出力の比率を決定することもできる。この場合、抵抗ｒａ，ｒｂや電源Ｖａ，Ｖｂが色制御部１２となり、色調制御部４は、各スイッチング素子Ｑａ，Ｑｂを共通のデューティ比でオンオフすることにより、各色の光出力を色毎に一括して制御することができる。   In the circuit configuration shown in FIG. 4, the ratio of the light output between the LEDs 10a and 10b can be determined by making the resistance values of the resistors ra and rb and the voltage values of the power sources Va and Vb different for each of the LEDs 10a and 10b. it can. In this case, the resistors ra and rb and the power sources Va and Vb serve as the color control unit 12, and the color tone control unit 4 turns on and off the switching elements Qa and Qb with a common duty ratio, thereby changing the light output of each color for each color. It can be controlled collectively.

さらに、本実施形態において、実施形態１のような帯域フィルタ１１，２１，３１を設けてもよい。   Further, in the present embodiment, band-pass filters 11, 21, 31 as in the first embodiment may be provided.

また、各色制御部１２，２２，３２において、対応する色の各ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂに対してそれぞれ光出力を検出するセンサを設け、このセンサの出力に基いたフィードバック制御によってＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂ間の光出力の比率を制御するようにしてもよい。この構成を採用すれば、各ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂの経年変化にも対応することができる。   Each color control unit 12, 22, 32 is provided with a sensor for detecting the light output for each LED 10a, 10b, 20a, 20b, 30a, 30b of the corresponding color, and feedback control based on the output of this sensor. May control the ratio of the light output between the LEDs 10a, 10b, 20a, 20b, 30a, 30b. By adopting this configuration, it is possible to cope with aging of each LED 10a, 10b, 20a, 20b, 30a, 30b.

さらに、各色制御部１２，２２，３２において、色調制御部４の出力と光出力との対応関係を一定としておけば、色調制御部４の動作を全ての照明装置で共通とすることができる。   Further, if the correspondence between the output of the color tone control unit 4 and the light output is fixed in each color control unit 12, 22, 32, the operation of the color tone control unit 4 can be made common to all the lighting devices.

また、実施形態１及び本実施形態において、各色のＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂを３個ずつ以上用いてもよい。   Moreover, in Embodiment 1 and this embodiment, you may use 3 or more of LED10a, 10b, 20a, 20b, 30a, 30b of each color.

さらに、実施形態１及び本実施形態において、ＬＥＤ１０ａ，１０ｂ，２０ａ，２０ｂ，３０ａ，３０ｂの組み合わせは赤色と緑色と青色とに限られず、任意の組み合わせを採用することができるが、混色によって得られる色の多彩さから、赤色と緑色と青色との組み合わせが望ましい。   Furthermore, in the first embodiment and the present embodiment, the combination of the LEDs 10a, 10b, 20a, 20b, 30a, and 30b is not limited to red, green, and blue, and any combination can be adopted. The combination of red, green and blue is desirable due to the variety of colors.

本発明の実施形態１を示す説明図である。It is explanatory drawing which shows Embodiment 1 of this invention. 同上に用いられるＬＥＤの特性を示す説明図である。It is explanatory drawing which shows the characteristic of LED used for the same as the above. 本発明の実施形態２を示す説明図である。It is explanatory drawing which shows Embodiment 2 of this invention. 同上において赤色制御部が赤色ＬＥＤを制御する構成の一例を示す説明図である。It is explanatory drawing which shows an example of a structure which a red control part controls red LED in the same as the above.

符号の説明Explanation of symbols

４ 色調制御部
１０ａ，１０ｂ 赤色ＬＥＤ
１１ 赤色帯域フィルタ
１２ 赤色制御部
２０ａ，２０ｂ 緑色ＬＥＤ
２１ 緑色帯域フィルタ
２２ 緑色制御部
３０ａ，３０ｂ 青色ＬＥＤ
３１ 青色帯域フィルタ
３２ 青色制御部 4 Color control unit 10a, 10b Red LED
11 Red band filter 12 Red controller 20a, 20b Green LED
21 Green band filter 22 Green controller 30a, 30b Blue LED
31 Blue band filter 32 Blue controller

Claims (2)

複数の色のＬＥＤを備える照明装置であって、
用いられる半導体の種別が共通であってそれぞれ波長の異なる光を放射する複数個のＬＥＤと、前記複数個のＬＥＤを覆い前記複数個のＬＥＤの平均の波長を含む帯域の光を透過させる帯域フィルタとを色毎に備え、
各色のＬＥＤの光出力を色毎に一括して制御する色調制御部を備えることを特徴とする照明装置。 A lighting device comprising LEDs of a plurality of colors,
A plurality of LEDs that share the same type of semiconductor and emit light having different wavelengths, and a bandpass filter that covers the plurality of LEDs and transmits light in a band including an average wavelength of the plurality of LEDs. For each color,
An illumination device comprising: a color tone control unit that collectively controls the light output of each color LED for each color. 複数の色のＬＥＤを備える照明装置であって、
用いられる半導体の種別が共通であってそれぞれ波長の異なる光を放射する複数個のＬＥＤと、前記複数個のＬＥＤの光の平均の波長が同種のＬＥＤ全体の平均の波長に一致するように前記複数個のＬＥＤ間の光出力の比率を制御する色制御部とを色毎に備え、
各色のＬＥＤの光出力を色毎に一括して制御する色調制御部を備えることを特徴とする照明装置。 A lighting device comprising LEDs of a plurality of colors,
A plurality of LEDs that share the same type of semiconductor and emit light having different wavelengths, and the average wavelength of the light of the plurality of LEDs matches the average wavelength of all LEDs of the same type. A color control unit for controlling the ratio of the light output between the plurality of LEDs for each color;
An illumination device comprising: a color tone control unit that collectively controls the light output of each color LED for each color.
JP2005371100A 2005-12-22 2005-12-22 Lighting device Pending JP2007173127A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010535412A (en) * 2007-08-02 2010-11-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Optical output device
JP2015004902A (en) * 2013-06-24 2015-01-08 ウシオ電機株式会社 Simple color light source device and display device

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JP2000123981A (en) * 1998-10-14 2000-04-28 Asahi Rubber:Kk Toning lighting system
JP3219000B2 (en) * 1996-12-27 2001-10-15 日亜化学工業株式会社 LED display and manufacturing method thereof
JP2006269098A (en) * 2005-03-22 2006-10-05 Sharp Corp Surface lighting system and liquid crystal display device provided therewith

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3219000B2 (en) * 1996-12-27 2001-10-15 日亜化学工業株式会社 LED display and manufacturing method thereof
JP2000123981A (en) * 1998-10-14 2000-04-28 Asahi Rubber:Kk Toning lighting system
JP2006269098A (en) * 2005-03-22 2006-10-05 Sharp Corp Surface lighting system and liquid crystal display device provided therewith

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010535412A (en) * 2007-08-02 2010-11-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Optical output device
JP2015004902A (en) * 2013-06-24 2015-01-08 ウシオ電機株式会社 Simple color light source device and display device

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