JPH06177425A - Polychromatic led lamp - Google Patents
Polychromatic led lampInfo
- Publication number
- JPH06177425A JPH06177425A JP43A JP35173192A JPH06177425A JP H06177425 A JPH06177425 A JP H06177425A JP 43 A JP43 A JP 43A JP 35173192 A JP35173192 A JP 35173192A JP H06177425 A JPH06177425 A JP H06177425A
- Authority
- JP
- Japan
- Prior art keywords
- led
- led chip
- led lamp
- color
- chips
- 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.)
- Granted
Links
Landscapes
- Led Device Packages (AREA)
Abstract
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 such as a color television which is required to generate an arbitrary color, and more specifically to a structure thereof. 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 structure of a conventional multicolor LED lamp 90. For example, a housing 9 called a dome shape and having a single lens formed at the tip thereof is used.
The LED chips 92R, 92G, and 92B of three primary colors of R (red), G (green), and B (blue) are sealed in one unit.
【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 the actual situation and the three primary colors L
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 there has been a problem to solve this point.
【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。As a concrete means for solving the above-mentioned conventional problems, the present invention stores at least two kinds of LED chips of different emission colors in an integral housing, and each of the above-mentioned respective In a multi-color LED lamp that obtains an arbitrary mixed color by individually controlling LED chips, an independent lens is provided for each LED chip on the front surface of each LED chip, and each L
The problem is solved by providing a multicolor LED lamp in which the diameter 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。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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, in this embodiment, an explanation will be given by using an example in which a red color having the highest luminous efficiency at present and a blue color having the lowest luminous efficiency is used. When R, G, and B are three colors, the same operation is performed among 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。Reference numeral 1 in FIG. 1 denotes a multicolor LED lamp according to the present invention. In the housing 2 of the multicolor LED lamp 1, a red light emitting LED is provided as in the conventional example.
The chip 3R and the blue light emitting LED chip 3B are supposed to be housed therein.
Lenses 4R and 4B, which are independent of each other, are provided on the front faces of the chips 3R and 3B in the irradiation direction, and the LED chips 3R and 4B are adjusted by adjusting these lenses 4R and 4B.
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 amount of light is adjusted by changing the apertures of the lenses 4R and 4B. In the case of this embodiment, Naturally, the aperture diameter Dr of the lens 4R facing the red LED chip 3R having a high light emission efficiency is set to be smaller than the aperture diameter Db of the lens 4B facing the blue LED chip 3B having a low light emission efficiency.
The amount of light emitted from the outside is 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 one digit, that is, in the range of about 10: 1, the correction can be made only by the above-mentioned first means. However, in reality, there is a difference in luminous efficiency of about two digits, so that the lens 4B on the blue side has, for example, a diameter of 2
When set to about mm, the diameter of the red lens 4R is required to be as small as 0.63 mm or less,
Actual implementation becomes 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 low luminous efficiency side.
Has a focal point Fb in the vicinity of the LED chip 3B, and emits light emitted from the LED chip 3B with a relatively narrow beam angle αb in the irradiation direction.
【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 is assumed to have a longer focal length, and the focus Fr is the LED chip 3
It is assumed to be behind R, so that it is emitted with a relatively wide beam angle αr, and the brightness of the viewing point is adjusted by the ratio of the above-mentioned beam angles αb and αr. The focal length for the lens 4R may be set shorter and may be set in front of the LED chip 3R. In this case, the lens lens 4R once converges on the exit side and then diverges with a predetermined beam angle. Will be things.
【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。In the present invention, in addition to the above-mentioned first means and second means, as a third means, an LED chip 3R,
This is to propose a change in the number of 3B, specifically, to increase the number of LED chips 3B on the side with lower luminous efficiency with respect to the LED chip 3R with higher luminous efficiency. A lens 4B is provided for each of the added LED chips 3B, and correction is performed based on the above-mentioned first means and second means. When the number of LED chips 3R and 3B is increased,
Those of the same color are arranged at positions symmetrical 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, if the reason why the third means is carried out will be explained, basically sufficient correction can be made only by the first means and the second means. However, since the beam angle αb and the beam angle αr are provided with the difference by the second means, when viewed from the side, for example, the red side having a wider beam angle αr is strongly viewed. , The display is 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 to alleviate this situation. The absolute amount of blue light emission is increased by adding the LED chip 3B having a low luminous efficiency, for example, the red LED chip 3R. It is possible to reduce the beam angle αr and 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 the luminous efficiency, which is extremely impractical.
【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, green LE
Needless to say, when the D chip is added to form the multi-color LED lamp 1 of three primary colors, 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 of each LED chip is adjusted according to the luminous efficiency of each LED chip. By adopting a multi-color LED lamp whose diameter and focal length are adjusted, this multi-color LED lamp corrects the difference in the light emission efficiency of the LED chips of R, G, and B colors by the lens configuration, and makes accurate light emission. It has an excellent effect of obtaining a color.
【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。Further, in addition to the above, the number of LED chips of the emission color on the side of low emission efficiency is increased in the housing with respect to the LED chips of the emission color on the side of high emission efficiency. By using a multi-color LED lamp having such a structure, the above-mentioned correction amount can be reduced, and for example, color shift when viewed from the side can be reduced and display quality can be improved.
【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 view showing an essential 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
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. LE having at least two different emission colors
The D chip is housed in an integral housing, and each L
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 performed. A multicolor LED lamp, wherein the diameter and focal length of the lens are adjusted according to 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 emission color on the side of low emission efficiency
2. The multicolor LE according to claim 1, wherein the number of chips to be accommodated in the housing is increased with respect to the LED chips of the emission color on the higher emission efficiency side.
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 LED chips of the luminescent color having the increased luminous efficiency, which is increased in number, are arranged at positions symmetrical with respect to the center of the multicolor LED lamp. Item 2. 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 true JPH06177425A (en) | 1994-06-24 |
| JP3326505B2 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000275636A (en) * | 1999-03-25 | 2000-10-06 | Seiko Epson Corp | Light source and illumination device as well as liquid crystal device using the illumination device |
| JP2013140969A (en) * | 2011-12-30 | 2013-07-18 | Advanced Optoelectronic Technology Inc | Light emitting diode package |
| JP2013179302A (en) * | 2008-05-23 | 2013-09-09 | Cree Inc | Semiconductor lighting component |
-
1992
- 1992-12-08 JP JP35173192A patent/JP3326505B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000275636A (en) * | 1999-03-25 | 2000-10-06 | Seiko Epson Corp | Light source and illumination device as well as liquid crystal device using the illumination device |
| JP2013179302A (en) * | 2008-05-23 | 2013-09-09 | Cree Inc | Semiconductor lighting component |
| JP2013140969A (en) * | 2011-12-30 | 2013-07-18 | Advanced Optoelectronic Technology Inc | Light emitting diode package |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3326505B2 (en) | 2002-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020018034A1 (en) | Display color temperature corrected lighting apparatus and flat plane display apparatus | |
| US20100072919A1 (en) | Led lamp with high efficacy and high color rendering and manufacturing method thereof | |
| JP2007515662A (en) | Multiple primary color display system and display method using multiple primary colors | |
| JP3326505B2 (en) | Multicolor LED lamp | |
| JPH10161567A (en) | Luminescence unit block and light emitting diode display | |
| CN107454718B (en) | LED lamp light source with color temperature correcting function and optical system | |
| US5896001A (en) | Black matrix color cathode-ray tube having a red pattern wider than each of green and blue patterns | |
| US4767963A (en) | Shadow mask color CRT with enhanced resolution and/or brightness | |
| JPS60130715A (en) | Color display device | |
| JP2002157909A (en) | Led surface light source device | |
| JPS5937645A (en) | Light source tube | |
| SU114507A1 (en) | Screen three-beam receiving tube for color television | |
| JP2000047606A (en) | Display device | |
| EP0372234B1 (en) | Fluorescent lamp | |
| US4810928A (en) | Cathode-ray tube for constituting large picture display apparatus | |
| KR200161921Y1 (en) | Light emitting diode having wide angle emission | |
| JPS6222511B2 (en) | ||
| JP3068832B2 (en) | Projection display | |
| JPH07253577A (en) | Color display device | |
| JPS6122538A (en) | Beam-index-type color picture tube | |
| JPS61104542A (en) | Beam index type color picture tube | |
| KR200187175Y1 (en) | Electron gun for color cathode ray tube | |
| KR100502904B1 (en) | Vacuum fluorescent display device | |
| KR19980040915A (en) | Formation method of fluorescent film of color cathode ray tube | |
| JPH04355492A (en) | Light emitting element |
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 |