JPH0350540A - Dual-light-source lighting device - Google Patents
Dual-light-source lighting deviceInfo
- Publication number
- JPH0350540A JPH0350540A JP1186407A JP18640789A JPH0350540A JP H0350540 A JPH0350540 A JP H0350540A JP 1186407 A JP1186407 A JP 1186407A JP 18640789 A JP18640789 A JP 18640789A JP H0350540 A JPH0350540 A JP H0350540A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- light
- reflecting mirror
- lighting device
- mirror
- 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.)
- Pending
Links
- 238000005286 illumination Methods 0.000 claims description 11
- 229910052736 halogen Inorganic materials 0.000 abstract description 5
- 150000002367 halogens Chemical class 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 229910052987 metal hydride Inorganic materials 0.000 abstract 1
- 150000004681 metal hydrides Chemical class 0.000 abstract 1
- 229910001507 metal halide Inorganic materials 0.000 description 6
- 150000005309 metal halides Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、液晶投写型ブロジェクシゴンテレビ，スライ
ド映写機，オーバーへッドプロジェクタに用いる照明装
置に関するものである．
従来の技術
液晶投写型プロジェクションテレビは、光源ライトバル
ブとして働く液晶パネル．通常レンズとスクリーンで構
威される．この光源には、通常、ハロゲンランプ，メタ
ルハライドランプやキセノンランプが使用されるが、高
輝度，高効率．瞬時点灯などを兼ね備えた光源の出現が
望まれている．発明が解決しようとする課題
ショートアークのメタルハライドランプは高輝度で高効
率の光源に適しているが、光束立上げ時間が長く、点灯
後数分間経過しないと明るくならない。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an illumination device for use in liquid crystal projection televisions, slide projectors, and overhead projectors. Conventional technology LCD projection televisions use an LCD panel that acts as a light source. It usually consists of a lens and a screen. This light source is usually a halogen lamp, metal halide lamp, or xenon lamp, which has high brightness and high efficiency. It is hoped that a light source with instant lighting will emerge. Problems to be Solved by the Invention Although short-arc metal halide lamps are suitable as high-intensity, high-efficiency light sources, they take a long time to build up their luminous flux, and do not become bright until several minutes have elapsed after lighting.
本発明は上記の問題点を解決するもので、高輝度，高効
率で、瞬時点灯の可能な照明装置を提供するものである
．
課題を解決するための手段
上記課題を解決するために、本発明の２光源照明装置は
、第１光源と第２光源ならびに反射鏡で＋！威し、第１
光源から出射される光束が反！′ｔ＠で反射されたのち
、第２光源の位置に集束するように配置する。すなわち
、２つの光源は反射鏡に関して共役点になるように構戒
する．
作用
本発明の２光源照明装置は、上記のように、２つの光源
を反射鏡の共役点に配置することにより、高輝度．高効
率で、瞬時点灯できる照明装置の実現を可能にした．
例えば、第１光源に高輝度・高効率に難点があるが、瞬
時点灯の可能なハロゲンランプを使用し、第２光源には
、瞬時点灯に難点があるが、高輝度で高効率のメタルハ
ライドランプを使用する．２つの光源を同時に点灯する
と、点灯直後は光束立上げ時間の長い第２光源のメタル
ハライドランプからは光が出ないが、第１光源のハロゲ
ンランプからの光が反射鏡で反射され、第２光源の位置
から出射される，時間が経過して第２光源のメタルハラ
イドランプからの光が強くなれば、第１光源を消灯すれ
ば良い，このように、本発明の２光源照明装置では、点
灯直後から実用上必要な明るさが得られる照明装置が実
現できる。The present invention solves the above problems and provides a lighting device that has high brightness, high efficiency, and is capable of instantaneous lighting. Means for Solving the Problems In order to solve the above problems, the two-light source illumination device of the present invention provides +! Intimidation, first
The light flux emitted from the light source is reversed! After being reflected by 't@, the light is arranged so as to be focused at the position of the second light source. In other words, the two light sources are arranged so that they are at conjugate points with respect to the reflecting mirror. Function: As described above, the two-light source illumination device of the present invention achieves high brightness by arranging the two light sources at the conjugate points of the reflecting mirror. This has made it possible to create a lighting device that is highly efficient and can be turned on instantly. For example, the first light source uses a halogen lamp that has high brightness and high efficiency but can be lit instantly, and the second light source uses a metal halide lamp that has high brightness and high efficiency but has shortcomings in instant lighting. Use. When two light sources are turned on at the same time, immediately after turning on, the second light source, the metal halide lamp, which has a long luminous flux startup time, does not emit light, but the light from the first light source, the halogen lamp, is reflected by the reflector, and the second light source As time passes and the light from the metal halide lamp as the second light source becomes stronger, the first light source can be turned off.In this way, in the two-light source lighting device of the present invention, the light from the metal halide lamp as the second light source becomes stronger. It is possible to realize a lighting device that can obtain the brightness required for practical use.
実施例
以下、本発明の一実施例の２光源照明装置について、図
面を参照しながら説明する。第１図は本発明の２光源照
明装置の一実施例を示す構戒図である．第１図で１は第
１光源、２は第２光源、３は反射鏡、４は第１光源１か
らの光が前方に出さないための遮光板である。第１光源
１と第２光源２は反射鏡３の共役点に配置されており、
いずれの光源から出た光も第２光源の位置がら出射され
ることになる。反射鏡３を、例えば、楕円ミラーとして
その２つの焦点の位置に第１光源と第２光源を配置すれ
ば無収差の共役点となる．第１光源１をハロゲンランプ
、第２光源２をメタルノ＼ライドランブと言うように、
異種の、かつそれぞれの欠点を補うような光源を用いる
と、双方の特長を活かした照明装置が実現できる．
第２図は本発明の２光源照明装置の他の実施例を示すｔ
ｊｔ或図である．第２図で、１１は第１光源、１２は第
２光源、１３は第１反射鏡、１４は第２反射鏡である．
第１光源１１と第２光ｉ１１１２は第１反射鏡ｌ３に関
する共役点に配置される。第２反射鏡１４は第１光源１
１を挟んで第１反射鏡ｌ３と対向するように配置すると
ともに球面の第２反射鏡ｌ４の曲率中心に第１光源１１
を配置する。このようにすると、第１光ａ１１と第２光
源１２の光を有効に使用することが可能である。EXAMPLE Hereinafter, a two-light source illumination device according to an example of the present invention will be described with reference to the drawings. FIG. 1 is a structural diagram showing an embodiment of the two-light source illumination device of the present invention. In FIG. 1, 1 is a first light source, 2 is a second light source, 3 is a reflecting mirror, and 4 is a light shielding plate for preventing light from the first light source 1 from going forward. The first light source 1 and the second light source 2 are arranged at the conjugate point of the reflecting mirror 3,
The light emitted from either light source will be emitted depending on the position of the second light source. If the reflecting mirror 3 is, for example, an elliptical mirror and a first light source and a second light source are placed at its two focal points, the mirror will become an aberration-free conjugate point. The first light source 1 is a halogen lamp, and the second light source 2 is a metal lamp.
By using different types of light sources that compensate for the shortcomings of each, it is possible to create a lighting system that takes advantage of the strengths of both. FIG. 2 shows another embodiment of the two-light source lighting device of the present invention.
This is a diagram. In FIG. 2, 11 is a first light source, 12 is a second light source, 13 is a first reflecting mirror, and 14 is a second reflecting mirror.
The first light source 11 and the second light i1112 are arranged at a conjugate point with respect to the first reflecting mirror l3. The second reflecting mirror 14 is the first light source 1
The first light source 11 is arranged so as to face the first reflecting mirror l3 with the spherical second reflecting mirror l4 in between.
Place. In this way, it is possible to effectively use the first light a11 and the light from the second light source 12.
発明の効果
以上述べてきたように、本発明の照明光学系により、２
つの光課のお互いの欠点を補い、特長を生かした高輝度
，高効率で、瞬時点灯が可能な照明装置が実現できる．Effects of the Invention As described above, the illumination optical system of the present invention provides two
By compensating for each other's shortcomings, it is possible to create a lighting system that takes advantage of the strengths of the two light sections to achieve high brightness, high efficiency, and instant lighting.
第１図は本発明の一実施例における２光源照明装置の構
戒図、第２図は本発明の他の実施例における２光源照明
装置の構戒図である。
１・・・・・・第１光源、２・・・・・・第２光源、３
・・・・・・反射鏡、４・・・・・・遮光板。FIG. 1 is a structural diagram of a two-light source illumination device in one embodiment of the present invention, and FIG. 2 is a structural diagram of a two-light source illumination device in another embodiment of the present invention. 1...First light source, 2...Second light source, 3
...Reflector, 4... Light shielding plate.
Claims (5)
記第１光源から出射される光束が前記反射鏡で反射され
前記第２光源の位置に集束するように構成することを特
徴とする２光源照明装置。(1) Consisting of a first light source, a second light source, and a reflecting mirror, the light beam emitted from the first light source is reflected by the reflecting mirror and is focused at the position of the second light source. 2 light source lighting device.
の焦点にそれぞれ第１ランプと第２ランプを配置するこ
とを特徴とする請求項（１）記載の２光源照明装置。(2) The two-light source illumination device according to claim (1), wherein the reflecting mirror is an elliptical mirror, and a first lamp and a second lamp are respectively arranged at two focal points of the elliptical mirror.
ることを特徴とする請求項（１）記載の２光源照明装置
。(3) The two-light source illumination device according to claim (1), wherein the first light source and the second light source are different types of light sources.
射鏡より成り、前記第１光源から出射される光束が前記
第１反射鏡で反射され前記第２光源の位置に集束するよ
うに構成すると共に、球面の第２反射鏡の曲率中心に前
記第１光源を配置したことを特徴とする２光源照明装置
。(4) Consisting of a first light source, a second light source, a first reflecting mirror, and a second reflecting mirror, the light beam emitted from the first light source is reflected by the first reflecting mirror and focused at the position of the second light source. A two-light source lighting device characterized in that the first light source is arranged at the center of curvature of a spherical second reflecting mirror.
向するように配置したことを特徴とする請求項（４）記
載の２光源照明装置。(5) The two-light source illumination device according to claim (4), wherein the first reflecting mirror and the second reflecting mirror are arranged to face each other with the first light source in between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1186407A JPH0350540A (en) | 1989-07-19 | 1989-07-19 | Dual-light-source lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1186407A JPH0350540A (en) | 1989-07-19 | 1989-07-19 | Dual-light-source lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0350540A true JPH0350540A (en) | 1991-03-05 |
Family
ID=16187875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1186407A Pending JPH0350540A (en) | 1989-07-19 | 1989-07-19 | Dual-light-source lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0350540A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101459A1 (en) | 2001-06-08 | 2002-12-19 | Infocus Corporation | Achieving color balance in image projection systems by injecting compensating light |
| JP2009021239A (en) * | 2007-06-25 | 2009-01-29 | Valeo Vision | Lighting module for vehicular headlight |
-
1989
- 1989-07-19 JP JP1186407A patent/JPH0350540A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101459A1 (en) | 2001-06-08 | 2002-12-19 | Infocus Corporation | Achieving color balance in image projection systems by injecting compensating light |
| EP1405137A1 (en) * | 2001-06-08 | 2004-04-07 | Infocus Corporation | Achieving color balance in image projection systems by injecting compensating light |
| EP1405137A4 (en) * | 2001-06-08 | 2007-08-22 | Infocus Corp | Achieving color balance in image projection systems by injecting compensating light |
| JP2009021239A (en) * | 2007-06-25 | 2009-01-29 | Valeo Vision | Lighting module for vehicular headlight |
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