JP2006155956A - Lighting system - Google Patents

Lighting system Download PDF

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JP2006155956A
JP2006155956A JP2004341175A JP2004341175A JP2006155956A JP 2006155956 A JP2006155956 A JP 2006155956A JP 2004341175 A JP2004341175 A JP 2004341175A JP 2004341175 A JP2004341175 A JP 2004341175A JP 2006155956 A JP2006155956 A JP 2006155956A
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light
lens
led
white
light source
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Toshiyuki Arai
敏之 新井
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Toshiba Lighting and Technology Corp
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Harison Toshiba Lighting Corp
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  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system having a small and simple structure and generating white light with a desired uniform color temperature. <P>SOLUTION: A light source unit 10 is constructed of a white LED 12 and a yellow LED 13 serving as light sources. A lens optical system unit 20 put over the light source unit 10 is provided with a flyeye lens 23. The flyeye lens 23 receives emission light from the respective LED 12 and 13 via respective lens parts 23b and emits and superimposes it to a specific irradiation area. In this way, a white color mixed uniformly without an uneven color with a predetermined color temperature is obtained on the irradiated face. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、複数の発光ダイオードを光源として用いた照明装置に関する。   The present invention relates to a lighting device using a plurality of light emitting diodes as a light source.

近年、発光ダイオード（以下、ＬＥＤと称す）においては、白色系の光を発光する白色ＬＥＤが広く普及している。この白色ＬＥＤは、例えば青色系の発光体に蛍光体を付加することで容易に実現でき、しかも高出力なことから、読書灯や車載のマップランプ等の照明装置への適用が期待されている。その一方で、一般に、この種の白色ＬＥＤから出射する光の色温度は比較的高いため、当該白色ＬＥＤのみを光源として照明装置を構成するとユーザに疲労感を与える場合がある。   In recent years, white LEDs that emit white light are widely used as light emitting diodes (hereinafter referred to as LEDs). This white LED can be easily realized by adding a phosphor to a blue light emitter, for example, and has a high output, so that it is expected to be applied to a lighting device such as a reading lamp or an in-vehicle map lamp. . On the other hand, generally, since the color temperature of light emitted from this type of white LED is relatively high, if the lighting device is configured using only the white LED as a light source, the user may feel tired.

これに対処し、例えば特許文献１には、白色ＬＥＤと、緑色ＬＥＤと、赤色ＬＥＤとを基板上に複数実装し、各々のＬＥＤから放射された光を拡散板で混光することで温白色等の光源色を得る技術が開示されている。
特開２００２−２７０８９９公報 To cope with this, for example, in Patent Document 1, a plurality of white LEDs, green LEDs, and red LEDs are mounted on a substrate, and light emitted from each LED is mixed with a diffuser to warm white. A technique for obtaining a light source color such as the above is disclosed.
JP 2002-270899 A

しかしながら、上述の特許文献１に開示された技術において、各色のＬＥＤから出射する光を、拡散板でムラなく均一に混光するためには、ＬＥＤから拡散板までの距離を十分に確保する必要があり装置の大型化を招く。しかも、各色のＬＥＤから出射する光を均一に混光するためには、各色のＬＥＤを所定パターンで交互に配置する必要があるあるため、基板上での回路構成が複雑化する。   However, in the technique disclosed in Patent Document 1 described above, in order to uniformly mix the light emitted from each color LED with the diffusion plate without unevenness, it is necessary to ensure a sufficient distance from the LED to the diffusion plate. There is an increase in the size of the device. In addition, in order to uniformly mix the light emitted from the LEDs of each color, it is necessary to alternately arrange the LEDs of each color in a predetermined pattern, which complicates the circuit configuration on the substrate.

本発明は、小型且つ簡単な構成で均一な所望色温度の白色光を得ることのできる照明装置を提供することを目的とする。   An object of the present invention is to provide an illumination device that can obtain white light having a uniform desired color temperature with a small and simple configuration.

本発明は、白色系の光を発光する白色発光ダイオードと、黄色系の光を発光する黄色発光ダイオードとを有する光源ユニットと、前記光源ユニットの各発光ダイオードから出射する光をそれぞれ入射して特定の照射領域に重畳させて出射する複数のレンズ部を有するフライアイレンズと、を具備したことを特徴とする。   The present invention relates to a light source unit having a white light emitting diode that emits white light, a yellow light emitting diode that emits yellow light, and a light emitted from each light emitting diode of the light source unit. And a fly-eye lens having a plurality of lens portions that are superimposed on the irradiation region.

本発明の照明装置によれば、小型且つ簡単な構成で均一な所望色温度の白色光を得ることができる。   According to the illumination device of the present invention, white light having a uniform desired color temperature can be obtained with a small and simple configuration.

以下、図面を参照して本発明の実施形態を説明する。図面は本発明の一実施形態に係わり、図１は照明装置の要部断面図、図２は照明装置の分解斜視図、図３は発光ダイオードを基板上に実装する際の配線の一例を示す回路図、図４は設定照射領域と各レンズ部の照射領域との関係を示す説明図、図５はｘｙ色度図、図６は図５の拡大図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. The drawings relate to an embodiment of the present invention, FIG. 1 is a cross-sectional view of a main part of the lighting device, FIG. 2 is an exploded perspective view of the lighting device, and FIG. 3 shows an example of wiring when mounting a light emitting diode on a substrate. FIG. 4 is a circuit diagram, FIG. 4 is an explanatory diagram showing the relationship between the set irradiation region and the irradiation region of each lens unit, FIG. 5 is an xy chromaticity diagram, and FIG. 6 is an enlarged view of FIG.

図１において、符号１は、例えば車載のマップランプ等に好適な照明装置を示す。この照明装置１は、光源ユニット１０と、この光源ユニット１０に冠設するレンズ光学系ユニット２０とを有する。   In FIG. 1, the code | symbol 1 shows the illuminating device suitable for a vehicle-mounted map lamp etc., for example. The illumination device 1 includes a light source unit 10 and a lens optical system unit 20 provided on the light source unit 10.

図１，２に示すように、光源ユニット１０は基板としてのＬＥＤ基板１１を有し、ＬＥＤ基板１１は、白色系の光を発光する複数（例えば６個）の白色発光ダイオード（以下、白色ＬＥＤと称す）１２と、黄色系の光を発光する複数（例えば３個）の黄色発光ダイオード（以下、黄色ＬＥＤと称す）１３とを光源として実装する。   As shown in FIGS. 1 and 2, the light source unit 10 has an LED substrate 11 as a substrate, and the LED substrate 11 emits white light (for example, six) white light emitting diodes (hereinafter, white LEDs). And a plurality of (for example, three) yellow light-emitting diodes (hereinafter referred to as yellow LEDs) 13 that emit yellow light are mounted as light sources.

ここで、本実施形態において、各ＬＥＤ１２，１３は、発光体１２ａ，１３ａから出射する光の指向特性を所定角度（例えば、２０°）に規定するためのレンズ部１２ｂ，１３ｂを一体に備えたいわゆる砲弾型のＬＥＤである。また、白色ＬＥＤ１２には色温度が４６００Ｋ以上の光を出射するものを好適に採用することが可能であり、本実施形態の白色ＬＥＤ１２には、例えば、色度図（図５，６参照）上の座標が（ｘ，ｙ）＝（０．３１０，０．３２０）のものを採用している。また、黄色ＬＥＤ１３には波長が５５０ｎｍ〜５９５ｎｍの光を出射するものを好適に採用することが可能であり、本実施形態の黄色ＬＥＤ１３には、例えば、色度図上の座標が（ｘ，ｙ）＝（０．４７０，０．５１０）のものを採用している。   Here, in the present embodiment, the LEDs 12 and 13 are integrally provided with lens portions 12b and 13b for defining a directivity characteristic of light emitted from the light emitters 12a and 13a at a predetermined angle (for example, 20 °). This is a so-called bullet-type LED. Moreover, it is possible to suitably employ a white LED 12 that emits light having a color temperature of 4600K or higher. For example, the white LED 12 of the present embodiment has a chromaticity diagram (see FIGS. 5 and 6). The coordinates of (x, y) = (0.310, 0.320) are employed. Moreover, what emits light with a wavelength of 550 nm to 595 nm can be suitably employed for the yellow LED 13. For example, the yellow LED 13 of this embodiment has coordinates on the chromaticity diagram of (x, y). ) = (0.470, 0.510).

また、ＬＥＤ基板１１上に各ＬＥＤ１２，１３を実装するに際し、生産性向上等の観点から、各ＬＥＤ１２，１３をマトリクス状に配置することが望ましく、さらに、同種のＬＥＤ毎にそれぞれ近接させてＬＥＤ基板１１上に配置することが好ましい。このため、本実施形態においては、例えば、図２，３に示すように、各ＬＥＤ１２，１３は、それぞれ３個の白色ＬＥＤ１２で第１列目及び第２列目のＬＥＤ列を構成し、３個の黄色ＬＥＤ１３で第３列目のＬＥＤ列を構成する配置となっている。   Further, when mounting the LEDs 12 and 13 on the LED substrate 11, it is desirable to arrange the LEDs 12 and 13 in a matrix form from the viewpoint of improving productivity and the like. It is preferable to arrange on the substrate 11. Therefore, in the present embodiment, for example, as shown in FIGS. 2 and 3, each of the LEDs 12 and 13 constitutes the first and second LED rows with three white LEDs 12, respectively. The yellow LED 13 constitutes the third LED row.

そして、ＬＥＤ基板１１は、各ＬＥＤ１２，１３を半田付け等によって保持し、さらに、保持した各ＬＥＤ１２，１３を図示しない電源と電気的に接続する。この場合、具体的には、例えば、図３に示すように、ＬＥＤ基板１１に形成した配線１４によって、電源端子１５，１６間に、抵抗１７と第１列目の各白色ＬＥＤ１２とを直列接続し、抵抗１７と第２列目の各白色ＬＥＤ１２とを直列接続し、さらに、抵抗１８と第３列目の各黄色ＬＥＤ１３とを直列接続する。ここで、各抵抗１７，１８の抵抗値は、照明光に要求する白色光の色温度に応じて適宜設定されるものである。   The LED substrate 11 holds the LEDs 12 and 13 by soldering or the like, and further electrically connects the held LEDs 12 and 13 to a power source (not shown). In this case, specifically, for example, as shown in FIG. 3, a resistor 17 and each white LED 12 in the first row are connected in series between the power supply terminals 15 and 16 by the wiring 14 formed on the LED substrate 11. Then, the resistor 17 and each white LED 12 in the second row are connected in series, and further, the resistor 18 and each yellow LED 13 in the third row are connected in series. Here, the resistance values of the resistors 17 and 18 are appropriately set according to the color temperature of white light required for the illumination light.

なお、図１，２において、符号１９はＬＥＤ基板１１の熱を放熱して各ＬＥＤ１２，１３の発光効率を向上するための放熱フィンであり、この放熱フィン１９はＬＥＤ基板１１の裏面に固着している。   In FIGS. 1 and 2, reference numeral 19 denotes a heat radiating fin for radiating the heat of the LED substrate 11 to improve the light emission efficiency of each LED 12, 13. The heat radiating fin 19 is fixed to the back surface of the LED substrate 11. ing.

図１，２に示すように、レンズ光学系ユニット２０は、レンズ筐体２１と、このレンズ筐体２１内に収容保持されるコリメーションレンズ２２、及び、フライアイレンズ２３を有する。   As shown in FIGS. 1 and 2, the lens optical system unit 20 includes a lens housing 21, a collimation lens 22 housed and held in the lens housing 21, and a fly-eye lens 23.

図２に示すように、本実施形態において、レンズ筐体２１は、略角筒形状をなし、その光軸方向の一端にＬＥＤ挿入口３０が開口している。また、レンズ筐体２１の光軸方向の他端には、ＬＥＤ挿入口３０に対向する位置に、照明光の出射口３１が開口している。そして、図１に示すように、レンズ筐体２１は、光源ユニット１０に冠設した際に、ＬＥＤ挿入口３０を通じて各ＬＥＤ１２，１３を内部に露呈させ、各レンズ部１２ｂ，１３ｂを出射口３１に対向させる。   As shown in FIG. 2, in the present embodiment, the lens housing 21 has a substantially rectangular tube shape, and an LED insertion port 30 is opened at one end in the optical axis direction. Further, at the other end of the lens housing 21 in the optical axis direction, an illumination light exit port 31 is opened at a position facing the LED insertion port 30. As shown in FIG. 1, when the lens housing 21 is mounted on the light source unit 10, the LEDs 12 and 13 are exposed to the inside through the LED insertion port 30, and the lens portions 12 b and 13 b are exposed to the emission port 31. To face.

また、レンズ筐体２１は、一側に開口するレンズ挿入口３３を有し、このレンズ挿入口３３に隣接する各側壁の内面に、ＬＥＤ挿入口３０側から順に、互いに対向するコリメーションレンズ保持溝３５、及び、フライアイレンズ保持溝３６を有する。さらに、コリメーションレンズ保持溝３５よりもＬＥＤ挿入口３０側において、レンズ筐体２１は、内部をＬＥＤ挿入口３０側と出射口３１側とに区画する遮光板３８を有し、この遮光板３８には、各ＬＥＤ１２，１３にぞれぞれ対応する開口部３８ａがマトリクス状に開口している。   The lens housing 21 has a lens insertion opening 33 that opens to one side, and collimation lens holding grooves that face each other in order from the LED insertion opening 30 side on the inner surface of each side wall adjacent to the lens insertion opening 33. 35 and a fly-eye lens holding groove 36. Further, on the LED insertion port 30 side of the collimation lens holding groove 35, the lens housing 21 has a light shielding plate 38 that divides the interior into an LED insertion port 30 side and an emission port 31 side. The openings 38a corresponding to the LEDs 12 and 13 are opened in a matrix.

コリメーションレンズ２２は、例えば、コリメーションレンズ保持溝３５に挿入保持される平面略矩形形状のレンズ基板２２ａの出射側に、遮光板３８の各開口部３８ａにそれぞれ対応するレンズ部２２ｂが一体形成されたレンズ部材である。そして、コリメーションレンズ２２は、各開口部３８ａを通じて各ＬＥＤ１２，１３から入射する光を、各レンズ部２２ｂでそれぞれ略平行光に変換して出射する。   In the collimation lens 22, for example, lens portions 22 b corresponding to the respective openings 38 a of the light shielding plate 38 are integrally formed on the emission side of the substantially rectangular planar lens substrate 22 a inserted and held in the collimation lens holding groove 35. It is a lens member. The collimation lens 22 converts the light incident from the LEDs 12 and 13 through the openings 38a into substantially parallel light at the lens portions 22b and emits the light.

フライアイレンズ２３は、フライアイレンズ保持溝３６に挿入保持される平面略矩形形状のレンズ基板２３ａ上に、例えば下方に突出する入射面と上方に突出する出射面とを備えた複数（例えば、５×５個）のレンズ部２３ｂがマトリクス状に一体形成されたレンズ部材である。そして、フライアイレンズ２３は、コリメーションレンズ２２から各レンズ部２３ｂにそれぞれ入射する光を、被照射面上の特定の照射領域Ａｌ（図４参照）で互いに重畳させる。この場合、光源ユニット１０は白色ＬＥＤ１２と黄色ＬＥＤ１３とを有するため、フライアイレンズ２３の各レンズ部２３ｂに入射する光は当該レンズ部２３ｂの配設位置に応じて異なるが、各レンズ部２３ｂから出射する光束ｌは、照射領域Ａｌ上で互いに重畳して均一に混光するので、色ムラのない均一照度の照明光となる。   The fly-eye lens 23 includes, for example, a plurality of (for example, a plurality of, for example, an incident surface protruding downward and an emission surface protruding upward on a substantially rectangular lens substrate 23a inserted and held in the fly-eye lens holding groove 36. 5 × 5 lens portions 23b are lens members integrally formed in a matrix. The fly-eye lens 23 superimposes light incident on the lens portions 23b from the collimation lens 22 in a specific irradiation area Al (see FIG. 4) on the irradiated surface. In this case, since the light source unit 10 includes the white LED 12 and the yellow LED 13, the light incident on each lens portion 23b of the fly-eye lens 23 varies depending on the arrangement position of the lens portion 23b, but from each lens portion 23b. Since the emitted light beams l overlap each other on the irradiation area Al and are uniformly mixed, they become illumination light with uniform illuminance without color unevenness.

ここで、図中符号４０は側板であり、この側板４０は、各レンズ２２，２３をレンズ筐体２１内に収容後に、例えば粘着テープ等による貼着によって、レンズ筐体２１のレンズ挿入口３３を閉塞する。   Here, reference numeral 40 in the drawing denotes a side plate, and the side plate 40 accommodates the lenses 22 and 23 in the lens housing 21 and then, for example, sticks with an adhesive tape or the like to attach the lens insertion port 33 of the lens housing 21. Occlude.

このような実施形態によれば、光源ユニット１０の光源として白色ＬＥＤ１２と黄色ＬＥＤ１３とを用い、これら各ＬＥＤ１２，１３から出射する光を、フライアイレンズ２３を用いて混光することにより、小型且つ簡単な構成で、色ムラなく均一に混光された所望色温度の白色光を得ることができる。   According to such an embodiment, the white LED 12 and the yellow LED 13 are used as the light source of the light source unit 10, and the light emitted from each of the LEDs 12 and 13 is mixed using the fly-eye lens 23, thereby reducing the size and size. With a simple configuration, it is possible to obtain white light having a desired color temperature that is uniformly mixed without color unevenness.

すなわち、フライアイレンズ２３は、各レンズ部２３ｂから出射した光束ｌを照射領域Ａｌで互いに重畳させることで光の混光を実現するので、例えば拡散板上で光を混光する構成等に比べ、均一な照明光を得るために各ＬＥＤ１２，１３との間に特段大きな距離を必要とせず、照明装置１を小型化することができる。   That is, the fly-eye lens 23 realizes light mixing by superimposing the light beams 1 emitted from the respective lens portions 23b on the irradiation area Al, so that, for example, compared to a configuration in which light is mixed on a diffusion plate, etc. In order to obtain uniform illumination light, a particularly large distance is not required between the LEDs 12 and 13, and the illumination device 1 can be downsized.

また、フライアイレンズ２３は、各レンズ部２３ｂから出射した光束ｌを照射領域Ａｌで互いに重畳させることで光の混光を実現するので、光源ユニット１０から出射する光のパターン（すなわち、各ＬＥＤ１２，１３の配置パターン）に左右されることなく、色ムラのない均一な照明光を得ることができる。従って、各ＬＥＤ１２，１３を同種のもの毎にそれぞれ近接させてＬＥＤ基板１１上に配置することができ、このような配置とすれば、光源ユニット１０の簡素化等を実現できる。例えば図３に示した回路構成とすれば、ＬＥＤ基板１１に単層の導電パターンで配線１４を構成することができ、しかも、各ＬＥＤ１２，１３の方向を一致させることができるので、光源ユニット１０の構造の簡素化や生産性の向上等を実現することができる。   Further, since the fly-eye lens 23 realizes light mixing by superimposing the light beams 1 emitted from the lens portions 23b on the irradiation area Al, the light pattern emitted from the light source unit 10 (that is, each LED 12). , 13), uniform illumination light with no color unevenness can be obtained. Accordingly, the LEDs 12 and 13 can be arranged close to each other on the LED substrate 11 for each of the same types, and if such an arrangement is used, simplification of the light source unit 10 and the like can be realized. For example, if the circuit configuration shown in FIG. 3 is used, the wiring 14 can be formed on the LED substrate 11 with a single-layer conductive pattern, and the directions of the LEDs 12 and 13 can be made to coincide with each other. Simplification of the structure and improvement of productivity can be realized.

さらに、光源として用いるＬＥＤは、白色ＬＥＤと黄色ＬＥＤの２種類であるため、照明装置１の構成をより簡素化することができる。   Furthermore, since the LED used as a light source is two types, white LED and yellow LED, the structure of the illuminating device 1 can be simplified more.

なお、上述の実施形態においては、光源として、いわゆる砲弾型のＬＥＤを用いた例について説明したが、本発明はこれに限定されるものではなく、例えば、面実装型のＬＥＤを用いてもよい。   In the above-described embodiment, an example in which a so-called bullet-type LED is used as the light source has been described. However, the present invention is not limited to this, and for example, a surface-mount type LED may be used. .

また、各ＬＥＤの配置や個数、或いは、ＬＥＤ基板上での各ＬＥＤの電気的な接続関係等は、上述のものに限定されないことは勿論である。   Further, it goes without saying that the arrangement and number of LEDs, the electrical connection relationship of the LEDs on the LED substrate, and the like are not limited to those described above.

照明装置の要部断面図Cross section of the main part of the lighting device 照明装置の分解斜視図Exploded perspective view of lighting device 発光ダイオードを基板上に実装する際の配線の一例を示す回路図Circuit diagram showing an example of wiring for mounting a light-emitting diode on a substrate 設定照射領域と各レンズ部の照射領域との関係を示す説明図Explanatory drawing which shows the relationship between a setting irradiation area | region and the irradiation area | region of each lens part. ｘｙ色度図xy chromaticity diagram 図５の拡大図Enlarged view of FIG.

符号の説明Explanation of symbols

１…照明装置、１０…光源ユニット、１１…ＬＥＤ基板（基板）、１２…白色発光ダイオード、１３…黄色発光ダイオード、２３…フライアイレンズ、２３ｂ…レンズ部
代理人 弁理士 伊 藤 進 DESCRIPTION OF SYMBOLS 1 ... Illuminating device, 10 ... Light source unit, 11 ... LED board (board | substrate), 12 ... White light emitting diode, 13 ... Yellow light emitting diode, 23 ... Fly eye lens, 23b ... Lens part
Agent Patent Attorney Susumu Ito

Claims (2)

白色系の光を発光する白色発光ダイオードと、黄色系の光を発光する黄色発光ダイオードとを有する光源ユニットと、
前記光源ユニットの各発光ダイオードから出射する光をそれぞれ入射して特定の照射領域に重畳させて出射する複数のレンズ部を有するフライアイレンズと、
を具備したことを特徴とする照明装置。 A light source unit having a white light emitting diode that emits white light and a yellow light emitting diode that emits yellow light;
A fly-eye lens having a plurality of lens portions that respectively emit light that is emitted from each light-emitting diode of the light source unit and is superimposed on a specific irradiation region;
An illumination device comprising: 前記光源ユニットは、前記白色発光ダイオードと前記黄色発光ダイオードとを複数有し、
これら各発光ダイオードを同種のもの毎にそれぞれ近接させて基板上に実装したことを特徴とする請求項１記載の照明装置。 The light source unit includes a plurality of the white light emitting diodes and the yellow light emitting diodes,
2. The lighting device according to claim 1, wherein each of the light emitting diodes is mounted on a substrate in proximity to each other.
JP2004341175A 2004-11-25 2004-11-25 Lighting system Withdrawn JP2006155956A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100813066B1 (en) 2006-06-30 2008-03-14 엘지전자 주식회사 Lens substrate and LED package and back-light unit using the same
JP2008218186A (en) * 2007-03-05 2008-09-18 Mitsubishi Electric Corp Luminaire
JP2010132047A (en) * 2008-12-02 2010-06-17 Kojima Press Industry Co Ltd Map lamp for vehicle
WO2013086872A1 (en) 2011-12-11 2013-06-20 深圳市光峰光电技术有限公司 Light source and illuminating device
KR101324732B1 (en) * 2012-04-17 2013-11-05 김철암 A search light for long distance focus
JP2014216649A (en) * 2013-04-22 2014-11-17 アドヴァンスト オプトエレクトロニック テクノロジー インコーポレイテッドＡｄｖａｎｃｅｄ Ｏｐｔｏｅｌｅｃｔｒｏｎｉｃ Ｔｅｃｈｎｏｌｏｇｙ Ｉｎｃ． Method of manufacturing light-emitting diode module for illumination
JP2015022986A (en) * 2013-07-23 2015-02-02 浜松ホトニクス株式会社 Light source device
JP2016162693A (en) * 2015-03-04 2016-09-05 パナソニックＩｐマネジメント株式会社 Lighting device
WO2022011899A1 (en) * 2020-07-16 2022-01-20 歌尔股份有限公司 Optical system and projection apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100813066B1 (en) 2006-06-30 2008-03-14 엘지전자 주식회사 Lens substrate and LED package and back-light unit using the same
JP2008218186A (en) * 2007-03-05 2008-09-18 Mitsubishi Electric Corp Luminaire
JP2010132047A (en) * 2008-12-02 2010-06-17 Kojima Press Industry Co Ltd Map lamp for vehicle
WO2013086872A1 (en) 2011-12-11 2013-06-20 深圳市光峰光电技术有限公司 Light source and illuminating device
US9791132B2 (en) 2011-12-11 2017-10-17 Appotronics Corporation Limited Light source and illuminating device
KR101324732B1 (en) * 2012-04-17 2013-11-05 김철암 A search light for long distance focus
JP2014216649A (en) * 2013-04-22 2014-11-17 アドヴァンスト オプトエレクトロニック テクノロジー インコーポレイテッドＡｄｖａｎｃｅｄ Ｏｐｔｏｅｌｅｃｔｒｏｎｉｃ Ｔｅｃｈｎｏｌｏｇｙ Ｉｎｃ． Method of manufacturing light-emitting diode module for illumination
JP2015022986A (en) * 2013-07-23 2015-02-02 浜松ホトニクス株式会社 Light source device
JP2016162693A (en) * 2015-03-04 2016-09-05 パナソニックＩｐマネジメント株式会社 Lighting device
WO2022011899A1 (en) * 2020-07-16 2022-01-20 歌尔股份有限公司 Optical system and projection apparatus

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