JP3326505B2 - Multicolor LED lamp - Google Patents
Multicolor LED lampInfo
- Publication number
- JP3326505B2 JP3326505B2 JP35173192A JP35173192A JP3326505B2 JP 3326505 B2 JP3326505 B2 JP 3326505B2 JP 35173192 A JP35173192 A JP 35173192A JP 35173192 A JP35173192 A JP 35173192A JP 3326505 B2 JP3326505 B2 JP 3326505B2
- Authority
- JP
- Japan
- Prior art keywords
- led
- color
- chips
- led lamp
- luminous efficiency
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は例えばカラーテレビなど
任意な色彩の発生が必要とされる表示画面の表示エレメ
ントとして使用される多色ＬＥＤランプに関するもので
あり、詳細にはその構成に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-color LED lamp used as a display element of a display screen which needs to generate an arbitrary color, such as a color television. It is.
【０００２】[0002]
【従来の技術】従来の多色ＬＥＤランプ９０の構成の例
を示すものが図２であり、例えばドーム形などと称され
ている透明で先端に単レンズが形成されたハウジング９
１内にＲ（赤）、Ｇ（緑）、Ｂ（青）三原色のＬＥＤチ
ップ９２Ｒ、９２Ｇ、９２Ｂを封止したものである。2. Description of the Related Art FIG. 2 shows an example of the configuration of a conventional multicolor LED lamp 90. For example, a transparent housing 9 called a dome shape and having a single lens formed at the tip is shown in FIG.
The LED chips 92R, 92G, and 92B of three primary colors R (red), G (green), and B (blue) are sealed in one.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、現在の
製造技術においては例えば赤色のＬＥＤチップ９２Ｒの
発光効率と、青色のＬＥＤチップ９２Ｂの発光効率との
間には２桁近くの差があるのが実情であり、三原色のＬ
ＥＤチップ９２Ｒ、９２Ｇ、９２Ｂを同一の電流で同時
に点灯しても、その三原色の混合色である白色光は得ら
れないものとなり、この点の解決が課題とされるものと
なっていた。However, in the current manufacturing technology, for example, there is a difference of nearly two digits between the luminous efficiency of the red LED chip 92R and the luminous efficiency of the blue LED chip 92B. It is a fact, L of three primary colors
Even if the ED chips 92R, 92G, and 92B are simultaneously turned on with the same current, white light, which is a mixed color of the three primary colors, cannot be obtained, and solving this point has been a problem.
【０００４】[0004]
【課題を解決するための手段】本発明は前記した従来の
課題を解決するための具体的な手段として、少なくとも
二種類の異なる発光色のＬＥＤチップを一体のハウジン
グ内に収納し、夫々の前記ＬＥＤチップを個別に制御す
ることで任意の混合色を得る多色ＬＥＤランプにおい
て、夫々の前記ＬＥＤチップの前面には夫々のＬＥＤチ
ップ毎に独立するレンズを設けると共に、夫々の前記Ｌ
ＥＤチップの発光効率に応じて前記レンズの口径及び焦
点距離が調整されていることを特徴とする多色ＬＥＤラ
ンプを提供することで課題を解決するものである。According to the present invention, as a specific means for solving the above-mentioned conventional problems, at least two kinds of LED chips of different emission colors are housed in an integrated housing, and In a multicolor LED lamp that obtains an arbitrary mixed color by individually controlling LED chips, an independent lens is provided on the front surface of each LED chip for each LED chip, and each LED chip is
An object of the present invention is to solve the problem by providing a multicolor LED lamp characterized in that the aperture and the focal length of the lens are adjusted according to the luminous efficiency of the ED chip.
【０００５】[0005]
【実施例】つぎに、本発明を図に示す一実施例に基づい
て詳細に説明する。尚、説明を単純化し理解を容易とす
るために、この実施例では現状で最も発光効率が高い赤
色と、最も発光効率が低い青色との二色の間で実施した
例で説明するが、実際の実施に当たってＲ、Ｇ、Ｂ三色
である場合には三色の間で同様に実施されるものであ
る。Next, the present invention will be described in detail based on an embodiment shown in the drawings. In order to simplify the description and facilitate understanding, this embodiment will be described with an example in which the present embodiment is implemented between two colors of red, which has the highest luminous efficiency at present, and blue, which has the lowest luminous efficiency. In the case of three colors of R, G, and B, the same operation is performed between the three colors.
【０００６】図１に符号１で示すものは本発明に係る多
色ＬＥＤランプであり、この多色ＬＥＤランプ１のハウ
ジング２内には従来例のものと同様に赤色発光のＬＥＤ
チップ３Ｒと、青色発光のＬＥＤチップ３Ｂとが収納さ
れているものとされているが、本発明により前記ＬＥＤ
チップ３Ｒ、３Ｂの照射方向前面には夫々に独立するレ
ンズ４Ｒ、４Ｂが設けられるものとされ、これらのレン
ズ４Ｒ、４Ｂを調整することで前記ＬＥＤチップ３Ｒ、
３Ｂの発光効率の差を補正する構成とされている。A multicolor LED lamp according to the present invention is indicated by reference numeral 1 in FIG. 1, and a red light emitting LED is provided in a housing 2 of the multicolor LED lamp 1 as in the conventional example.
It is assumed that a chip 3R and a blue light emitting LED chip 3B are housed therein.
It is assumed that independent lenses 4R and 4B are provided on the front surfaces of the chips 3R and 3B in the irradiation direction, respectively. By adjusting these lenses 4R and 4B, the LED chips 3R and 4B are adjusted.
It is configured to correct the difference in luminous efficiency of 3B.
【０００７】以下に上記の構成を更に詳細に説明すれ
ば、先ず、第一の手段として前記レンズ４Ｒ及びレンズ
４Ｂの口径を変えることで光量の調整を行うもので、こ
の実施例の場合においては当然に発光効率の高い赤色の
ＬＥＤチップ３Ｒに対峙するレンズ４Ｒの口径Ｄｒが発
光効率の低い青色のＬＥＤチップ３Ｂに対峙するレンズ
４Ｂの口径Ｄｂよりも小径のものとされて、レンズ４Ｒ
から外部に放射される光量が減少させられるものとなっ
ている。The above structure will be described in more detail below. First, as a first means, the light amount is adjusted by changing the apertures of the lenses 4R and 4B. In the case of this embodiment, Naturally, the diameter Dr of the lens 4R facing the red LED chip 3R having high luminous efficiency is smaller than the diameter Db of the lens 4B facing the blue LED chip 3B having low luminous efficiency.
The amount of light radiated from the outside to the outside can be reduced.
【０００８】このときに、前記ＬＥＤチップ３ＲとＬＥ
Ｄチップ３Ｂとの発光効率の差が１桁、即ち１０：１程
度の範囲であれば上記した第一の手段のみで補正は可能
なものとなる。しかしながら、現実には略２桁の発光効
率の差があるので、青色側のレンズ４Ｂを例えば直径２
mm程度に設定したときには赤色側のレンズ４Ｒの直径は
０．６３mm以下と極小のものが要求されるものとなり、
実際の実施は極めて困難な状態となる。At this time, the LED chip 3R and the LE
If the difference in luminous efficiency from the D chip 3B is within one digit, that is, in the range of about 10: 1, the correction can be performed only by the first means described above. However, in reality, there is a difference in luminous efficiency of about two digits, so that the blue side lens 4B has a diameter of, for example, 2 mm.
When set to about mm, the diameter of the red side lens 4R is required to be as small as 0.63 mm or less,
Actual implementation is extremely difficult.
【０００９】よって、本発明においては第二の手段とし
て、前記レンズ４Ｒ、４Ｂに対する焦点距離の変更を提
供するものであり、低い発光効率の側であるレンズ４Ｂ
は、前記ＬＥＤチップ３Ｂの近傍に焦点Ｆｂを有するも
のとされ、このＬＥＤチップ３Ｂからの発光を比較的に
狭いビーム角αｂをもって照射方向に放射するものとさ
れている。Therefore, in the present invention, as a second means, the change of the focal length with respect to the lenses 4R and 4B is provided, and the lens 4B having a lower luminous efficiency is provided.
Has a focal point Fb near the LED chip 3B, and emits light emitted from the LED chip 3B in the irradiation direction at a relatively narrow beam angle αb.
【００１０】これに対してレンズ４Ｒは、より長い焦点
距離を有するものとされて、焦点ＦｒがＬＥＤチップ３
Ｒの後方にあるものとされ、これにより比較的に広いビ
ーム角αｒをもって放射されるものとされ、前記したビ
ーム角αｂとαｒとの比で観視点の明るさは調整される
ものとなる。尚、レンズ４Ｒに対する焦点距離の設定は
より短いものとしＬＥＤチップ３Ｒの前方にあるものと
しても良く、この場合にはレンズレンズ４Ｒの出射側で
一端収束し、その後に所定のビーム角をもって発散する
ものとなる。On the other hand, the lens 4R has a longer focal length, and the focal point Fr is
The beam is radiated at a relatively wide beam angle αr, and the brightness of the viewpoint is adjusted by the ratio between the beam angles αb and αr. The focal length of the lens 4R may be set shorter and may be located in front of the LED chip 3R. In this case, the light converges at the exit side of the lens lens 4R, and then diverges at a predetermined beam angle. It will be.
【００１１】本発明では、上記した第一の手段及び第二
の手段に加えて第三の手段として、ＬＥＤチップ３Ｒ、
３Ｂの数の変更を提案するものであり、具体的には、よ
り発光効率の高いＬＥＤチップ３Ｒに対して、発光効率
の低い側であるＬＥＤチップ３Ｂの数を増設するもので
あり、このときには増設されたＬＥＤチップ３Ｂの夫々
に対しレンズ４Ｂが設けられ上記した第一の手段及び第
二の手段に基づく補正が行われているものとされてい
る。また、ＬＥＤチップ３Ｒ、３Ｂの数を増した場合、
同色のものは中心に対して点対称の位置に配置されるも
のとなる。According to the present invention, as the third means in addition to the first means and the second means, LED chips 3R,
The present invention proposes a change in the number of LED chips 3B. Specifically, the number of LED chips 3B having a lower luminous efficiency is increased with respect to the LED chips 3R having a higher luminous efficiency. A lens 4B is provided for each of the added LED chips 3B, and correction based on the above-described first means and second means is performed. When the number of LED chips 3R and 3B is increased,
Those of the same color are arranged at point-symmetric positions with respect to the center.
【００１２】ここで、第三の手段が行われる理由につい
て説明を行えば、基本的には第一の手段及び第二の手段
のみで充分なる補正は可能である。しかしながら、第二
の手段によりビーム角αｂとビーム角αｒとに差が設け
られたことで、例えば側方から観視したときには、より
広いビーム角αｒとされた赤色側が強く観視されるもの
となり、表示は赤みが強いものとなる。Here, the reason why the third means is performed will be described. Basically, sufficient correction is possible only with the first means and the second means. However, since the difference between the beam angle αb and the beam angle αr is provided by the second means, for example, when viewed from the side, the red side having a wider beam angle αr is strongly viewed. , The display becomes strongly reddish.
【００１３】この状態を緩和するために行われるのが第
三の手段であり、発光効率の低いＬＥＤチップ３Ｂを増
設することで青色の発光の絶対量を増加させ、例えば赤
色のＬＥＤチップ３Ｒのビーム角αｒを減ずることを可
能として、前記した側方から観視されたときの表示品質
を向上させるものとする。尚、言うまでもないことであ
るが第三の手段のみで補正を行おうとするときには、そ
の発光効率の差から数の比は１００：１程度となり到底
に実施は不可能である。The third means is provided to alleviate this state. By adding LED chips 3B having low luminous efficiency, the absolute amount of blue light is increased. The beam angle αr can be reduced to improve the display quality when viewed from the side as described above. Needless to say, when the correction is to be performed only by the third means, the ratio of the numbers is about 100: 1 due to the difference in luminous efficiency, and it is impossible to implement at all.
【００１４】尚、上記した赤色のＬＥＤチップ３Ｒと、
青色のＬＥＤチップ３Ｂとの構成に加えて、緑色のＬＥ
Ｄチップが追加されて三原色の多色ＬＥＤランプ１とさ
れたときには、当然に緑色のＬＥＤチップに対しても上
記したような補正が行われることは言うまでもない。In addition, the above-mentioned red LED chip 3R,
In addition to the configuration with the blue LED chip 3B, the green LE
When the D chip is added to form the multi-color LED lamp 1 of three primary colors, it goes without saying that the above-described correction is naturally performed on the green LED chip.
【００１５】[0015]
【発明の効果】以上に説明したように本発明により、夫
々のＬＥＤチップの前面には夫々のＬＥＤチップ毎に独
立するレンズを設けると共に、夫々の前記ＬＥＤチップ
の発光効率に応じて前記レンズの口径及び焦点距離が調
整されている多色ＬＥＤランプとしたことで、この多色
ＬＥＤランプは、Ｒ、Ｇ、Ｂ各色のＬＥＤチップの発光
効率の違いをレンズの構成により補正し、正確な発光色
が得られると言う優れた効果を奏するものである。As described above, according to the present invention, an independent lens is provided for each LED chip on the front surface of each LED chip, and the lens is formed according to the luminous efficiency of each LED chip. By adopting a multi-color LED lamp whose aperture and focal length are adjusted, this multi-color LED lamp corrects the difference in luminous efficiency between the R, G, and B color LED chips by the lens configuration, and provides accurate light emission. This is an excellent effect that a color can be obtained.
【００１６】また、上記に加えて、発光効率が低い側の
発光色のＬＥＤチップは、発光効率が高い側の発光色の
ＬＥＤチップに対してハウジング内に収納される数を増
すものとされている多色ＬＥＤランプとすることで、上
記の補正量を減少させ、例えば側方から観視したときの
色ズレなどを減少させ表示品質の向上に効果を奏するも
のとなる。In addition, in addition to the above, the number of LED chips of the light emission color on the side with the lower luminous efficiency is increased relative to the number of LED chips of the light emission color on the side with the higher luminous efficiency. By using a multicolor LED lamp, the correction amount described above is reduced, and for example, the color shift when viewed from the side is reduced, which is effective in improving the display quality.
【図１】 本発明に係る多色ＬＥＤランプの一実施例を
要部で示す説明図である。FIG. 1 is an explanatory diagram showing a main part of an embodiment of a multicolor LED lamp according to the present invention.
【図２】 従来例を示す説明図である。FIG. 2 is an explanatory diagram showing a conventional example.
１……多色ＬＥＤランプ ２……ハウジング ３Ｒ、３Ｂ……ＬＥＤチップ ４Ｒ、４Ｂ……レンズ Ｆｒ、Ｆｂ……焦点 αｒ、αｂ……ビーム角 1. Multicolor LED lamp 2. Housing 3R, 3B LED chip 4R, 4B Lens Fr, Fb Focus αr, αb Beam angle
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−188685（ＪＰ，Ａ) 特開 平５−291629（ＪＰ，Ａ) 特開 昭61−179003（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01L 33/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-188685 (JP, A) JP-A-5-291629 (JP, A) JP-A-61-179003 (JP, A) (58) Field (Int. Cl. 7 , DB name) H01L 33/00
Claims (3)
Ｄチップを一体のハウジング内に収納し、夫々の前記Ｌ
ＥＤチップを個別に制御することで任意の混合色を得る
多色ＬＥＤランプにおいて、夫々の前記ＬＥＤチップの
前面には夫々のＬＥＤチップ毎に独立するレンズを設け
ると共に、夫々の前記ＬＥＤチップの発光効率に応じて
前記レンズの口径及び焦点距離が調整されていることを
特徴とする多色ＬＥＤランプ。1. LEs of at least two different emission colors
D chips are housed in an integral housing, and each of the L chips
In a multicolor LED lamp that obtains an arbitrary mixed color by individually controlling ED chips, an independent lens is provided for each LED chip on the front surface of each LED chip, and light emission of each LED chip is provided. A multicolor LED lamp, wherein the aperture and the focal length of the lens are adjusted according to the efficiency.
チップは、発光効率が高い側の発光色の前記ＬＥＤチッ
プに対して前記ハウジング内に収納される数を増すもの
とされていることを特徴とする請求項１記載の多色ＬＥ
Ｄランプ。2. The LED of a color having a lower luminous efficiency.
2. The multi-color LE according to claim 1, wherein the number of the chips accommodated in the housing is increased with respect to the LED chips of the emission color on the side with the higher luminous efficiency.
D lamp.
光色の前記ＬＥＤチップは、この多色ＬＥＤランプの中
心に対して点対称の位置に配置されていることを特徴と
する請求項２記載の多色ＬＥＤランプ。3. The multi-color LED lamp according to claim 3, wherein the increased number of the LED chips of the emission color with the lower luminous efficiency are arranged point-symmetrically with respect to the center of the multicolor LED lamp. Item 8. The multicolor LED lamp according to Item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35173192A JP3326505B2 (en) | 1992-12-08 | 1992-12-08 | Multicolor LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35173192A JP3326505B2 (en) | 1992-12-08 | 1992-12-08 | Multicolor LED lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06177425A JPH06177425A (en) | 1994-06-24 |
| JP3326505B2 true JP3326505B2 (en) | 2002-09-24 |
Family
ID=18419230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35173192A Expired - Fee Related JP3326505B2 (en) | 1992-12-08 | 1992-12-08 | Multicolor LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3326505B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3937644B2 (en) * | 1999-03-25 | 2007-06-27 | セイコーエプソン株式会社 | Light source, lighting device, and liquid crystal device using the lighting device |
| US7821023B2 (en) * | 2005-01-10 | 2010-10-26 | Cree, Inc. | Solid state lighting component |
| CN103187408B (en) * | 2011-12-30 | 2015-09-23 | 展晶科技(深圳)有限公司 | Package structure for LED |
-
1992
- 1992-12-08 JP JP35173192A patent/JP3326505B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06177425A (en) | 1994-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080048193A1 (en) | White light emitting diode module | |
| JPH0326536Y2 (en) | ||
| JPH1012926A (en) | Full color emission diode lamp and display | |
| JP2005123484A (en) | White led | |
| US5898510A (en) | Image forming apparatus and light source unit | |
| JP3326505B2 (en) | Multicolor LED lamp | |
| JP3399266B2 (en) | All-color light-emitting diode lamp | |
| US6126297A (en) | Planar color light emitting device | |
| JPH10161567A (en) | Luminescence unit block and light emitting diode display | |
| JP2979961B2 (en) | Full color LED display | |
| US5896001A (en) | Black matrix color cathode-ray tube having a red pattern wider than each of green and blue patterns | |
| JP3230357B2 (en) | Display device | |
| US5703432A (en) | Screen structure of a cathode-ray tube | |
| JPH0766858B2 (en) | Thin film light emitting device | |
| JPS60130715A (en) | Color display device | |
| US4767963A (en) | Shadow mask color CRT with enhanced resolution and/or brightness | |
| JP2002157909A (en) | Led surface light source device | |
| SU114507A1 (en) | Screen three-beam receiving tube for color television | |
| JPH0545773U (en) | Light emitting diode display | |
| JPS6222511B2 (en) | ||
| JPH06237017A (en) | Polychromatic light emitting diode lamp | |
| JPH0936433A (en) | Light source employing reflective led | |
| JPH07253577A (en) | Color display device | |
| JP2540248B2 (en) | Projection type liquid crystal display | |
| JPS62143576A (en) | Cathode ray tube display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100712 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100712 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110712 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120712 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |