JPH04147122A - Light source device with reflecting mirror - Google Patents
Light source device with reflecting mirrorInfo
- Publication number
- JPH04147122A JPH04147122A JP2271582A JP27158290A JPH04147122A JP H04147122 A JPH04147122 A JP H04147122A JP 2271582 A JP2271582 A JP 2271582A JP 27158290 A JP27158290 A JP 27158290A JP H04147122 A JPH04147122 A JP H04147122A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- housing
- reflecting mirror
- light
- metal halide
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 229910001507 metal halide Inorganic materials 0.000 abstract description 12
- 150000005309 metal halides Chemical class 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 10
- 238000005286 illumination Methods 0.000 abstract 2
- 239000011521 glass Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 rare earth metal iodide Chemical class 0.000 description 2
- HQSWGSFQSCMHFQ-UHFFFAOYSA-K thulium(3+);tribromide Chemical compound [Br-].[Br-].[Br-].[Tm+3] HQSWGSFQSCMHFQ-UHFFFAOYSA-K 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- GQKYKPLGNBXERW-UHFFFAOYSA-N 6-fluoro-1h-indazol-5-amine Chemical compound C1=C(F)C(N)=CC2=C1NN=C2 GQKYKPLGNBXERW-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- GBLDKMKYYYAAKD-UHFFFAOYSA-K dysprosium(3+);tribromide Chemical compound [Br-].[Br-].[Br-].[Dy+3] GBLDKMKYYYAAKD-UHFFFAOYSA-K 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- MZNSYJWLQLXLHE-UHFFFAOYSA-K holmium(3+);tribromide Chemical compound Br[Ho](Br)Br MZNSYJWLQLXLHE-UHFFFAOYSA-K 0.000 description 1
- KXCRAPCRWWGWIW-UHFFFAOYSA-K holmium(3+);triiodide Chemical compound I[Ho](I)I KXCRAPCRWWGWIW-UHFFFAOYSA-K 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- LZOMHYVAEHYDST-UHFFFAOYSA-K thulium(3+);triiodide Chemical compound I[Tm](I)I LZOMHYVAEHYDST-UHFFFAOYSA-K 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Projection Apparatus (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、例えばプロジェクタ装置などのような画像投
影装置に適用される反射鏡付光源装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a light source device with a reflecting mirror that is applied to an image projection device such as a projector device.
（従来の技術）
例えば文字、図形等の画像を拡大して表示面に投影する
手段として、映写機等が多用されているが、最近では、
プロジェクタ装置が使用されている。(Prior Art) Projectors and the like are often used as means for enlarging images such as characters and figures and projecting them onto a display screen.
A projector device is used.
この画像投影装置の基本原理は、第３図に示すように、
光源Ａと、この光源Ａから放射された光を反射して集光
させる反射鏡Ｂと、この反射＆１Ｂで集光された光をス
クリーンＣなどの投影面に投射する光学系レンズＤなど
からなる投影装置とで構成されており、例えば液晶プロ
ジェクタ装置の場合は、液晶表示画面Ｅに表示された画
像が上記スクリーンＣに拡大して投影されるようになっ
ている。The basic principle of this image projection device is as shown in Figure 3.
It consists of a light source A, a reflector B that reflects and collects the light emitted from the light source A, and an optical system lens D that projects the light collected by this reflection &1B onto a projection surface such as a screen C. For example, in the case of a liquid crystal projector device, the image displayed on the liquid crystal display screen E is enlarged and projected onto the screen C.
このような画像投影装置の光源装置としては反１・↑鏡
付のハロゲン電球等を使用したものが従来採用さａＬで
いγこが、最近では放射光量の増大が要求、、：４．始
めたため、例えばメタルハライドランプ等の高圧放電灯
をこれら光源装置に利用したものが開発されている。As a light source device for such an image projection device, a device using a halogen light bulb with a mirror has been conventionally used, but recently there has been a demand for an increase in the amount of emitted light.:4. As a result, light source devices using high-pressure discharge lamps such as metal halide lamps have been developed.
また、これらメタルハライドランプ等の高圧放電灯は、
その周囲の温度等の状態の変化に応じて放射する光量や
光色が変化してしまうため、この特性変化を防止するた
めに、凹面反射鏡の開口部に例えばガラス等の透光性部
材を取着して閉塞した構造の筐体の中に上記光源を収容
することが考えられろ。In addition, these high pressure discharge lamps such as metal halide lamps,
The amount and color of emitted light will change depending on changes in the surrounding temperature and other conditions, so in order to prevent this change in characteristics, a translucent material such as glass is installed at the opening of the concave reflector. It is conceivable to house the light source in a housing with an attached and closed construction.
（発明が解決しようとする課題）
しかしながら、この種の光源は、通常、凹面反射鏡の端
部（底部）に設けられた取付口に光源の端部が挿入され
た状態で接着剤によって反射鏡に固定されているため、
光源点灯による熱によって、これら接着剤から発生した
ガス等の不純物が、温度の低い前面ガラスに付着堆積し
て、放射光を遮ってしまい、放射光量を減少させてしま
うという問題があった。(Problem to be Solved by the Invention) However, in this type of light source, the end of the light source is usually inserted into the mounting hole provided at the end (bottom) of the concave reflector, and then the reflector is attached with adhesive. Since it is fixed to
There is a problem in that impurities such as gas generated from these adhesives are deposited on the cold front glass due to the heat generated by turning on the light source, blocking the emitted light and reducing the amount of emitted light.
本発明はこのような事情に基づきなされたもので、光源
点灯による熱に起因する不純物の筐体内部での残留を減
少させて、放射光量の低下を低減できる反射鏡付光源装
置を提供しようとするものである。The present invention was made based on the above circumstances, and an object thereof is to provide a light source device with a reflector that can reduce the amount of impurities remaining inside the casing due to heat generated by lighting the light source, and reduce the decrease in the amount of emitted light. It is something to do.
［発明の構成］
（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反射鏡付光源装置は
、凹面反射鏡、及び、この凹面反射鏡の開口部を閉塞し
、凹面反射鏡によって反射された光を透過する透光体と
を備えた筐体と、この筐体内に接着剤を介して固定収容
された光源とを備えたものであって、筐体には、通気口
が形成されていることを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the light source device with a reflecting mirror of the present invention includes a concave reflecting mirror, and an opening of the concave reflecting mirror is closed, and the concave reflecting mirror is closed. The housing includes a transparent body that transmits light reflected by a mirror, and a light source that is fixedly housed in the housing via an adhesive. It is characterized by the formation of
（作用）
本発明においては、筐体に通気口が形成されているため
、光源点灯による熱に起因する不純物の筐体内部での残
留が減少でき、その結果、放射光量の低下を低減できる
。(Function) In the present invention, since the vent is formed in the casing, it is possible to reduce the amount of impurities remaining inside the casing due to the heat generated by lighting the light source, and as a result, the decrease in the amount of emitted light can be reduced.
（実施例）
以下に本発明の反射鏡付光源装置に係る一実施例を図面
を参照して詳細に説明する。(Embodiment) An embodiment of the light source device with a reflecting mirror of the present invention will be described in detail below with reference to the drawings.
第１図に本発明の実施例を図示するように、光源である
メタルハライドランプ１は、例えば電極間距離が４〜１
０ｍｍに設定されたランプ電力が２２０Ｗタイプのもの
であり、その両端には圧潰封止部２が形成されている。As shown in FIG. 1, a metal halide lamp 1 serving as a light source has an inter-electrode distance of, for example, 4 to 1.
The lamp power is set to 0 mm and is of a 220 W type, and crush sealing portions 2 are formed at both ends thereof.
この封止部２には、電極３と、この電極３と各々接続す
るモリブデン等の金属箔４と、この金属箔４を介して電
極３と接続する例えばモリブデン線等からなる電気導入
体５が封着されている。This sealing part 2 includes an electrode 3, a metal foil 4 made of molybdenum or the like connected to each electrode 3, and an electricity introduction member 5 made of, for example, a molybdenum wire connected to the electrode 3 via the metal foil 4. It is sealed.
ここで電極３は、例えば線径０． ８＋ｏｎ＋のタング
ステンＷからなる電極軸と、線径０．６龍のタングステ
ンＷを３〜４回巻回して形成される電極コイル部とで構
成されている。Here, the electrode 3 has a wire diameter of, for example, 0. It consists of an electrode shaft made of 8+on+ tungsten W, and an electrode coil portion formed by winding tungsten W with a wire diameter of 0.6 mm three to four times.
尚、このランプ１内には、緩衝金属としての水銀と、金
属ハロゲン化物、およびアルゴンなどの希ガスが所定量
封入されている。The lamp 1 is filled with a predetermined amount of mercury as a buffer metal, a metal halide, and a rare gas such as argon.
本実施例の場合、金属ハロゲン化物は希土類の金属ハロ
ゲン化物とされており、沃素と臭素のハロゲンに、希土
類金属であるジスプロシウムＤＶ。In the case of this example, the metal halide is a rare earth metal halide, and the halogens of iodine and bromine are combined with dysprosium DV, which is a rare earth metal.
ホルミウムＨｏ、ツリウムＴｍが一緒に封入されている
。Holmium Ho and thulium Tm are sealed together.
したがって、ランプ内には、沃化ジスプロシウムＤｙＩ
沃化ホルミウムＨｏ Ｉ ａ、沃化ツリ３ゝ
ラムＴｍｌ と臭化ジスプロシウムＤｙＢｒ３、臭化
ホルミウムＨｏＢｒ３、臭化ツリウムＴｍＢｒ３が封入
されている。Therefore, in the lamp, dysprosium iodide DyI
Holmium iodide Ho I a, thulium iodide Tml, dysprosium bromide DyBr3, holmium bromide HoBr3, and thulium bromide TmBr3 are sealed.
また、上記希土類金属ハロゲン化物の全体の封入量は２
． ＯＩＤｇ／ｃｃとしてあり、これら封入物は沃化
希土類金属と臭化希土類金属との重量比を１０．５にし
である。In addition, the total amount of the rare earth metal halide enclosed is 2
．． OID g/cc, and these fills have a weight ratio of rare earth metal iodide to rare earth metal bromide of 10.5.
このような構成のメタルハライドランプ１は、開口径が
９０〜φ１３０■のガラス構体の内面にアルミニウム等
の光反射性の優れた金属を蒸着して形成された回転２次
曲面からなる凹面反射鏡６の略中心軸上に、その一方の
封止部２が挿入された状態で口金７が装着され、例えば
シリカとアルミナを主体としたペースト状のスミセラム
（商品名：朝日化学工業■製）等の耐熱性接着剤を充填
することによって凹面反射鏡６に固定されている。The metal halide lamp 1 having such a configuration includes a concave reflector 6 made of a rotating quadratic curved surface formed by vapor-depositing a metal with excellent light reflectivity such as aluminum on the inner surface of a glass structure with an aperture diameter of 90 to 130 mm. The cap 7 is attached with one of the sealing parts 2 inserted approximately on the central axis of the holder, and the cap 7 is attached to the cap 7 with the sealing part 2 inserted thereinto. It is fixed to the concave reflecting mirror 6 by filling it with a heat-resistant adhesive.
また、この反射鏡６の前面の開口部には、この反射鏡６
を閉塞するように例えばガラス等の透光性材料で形成さ
れた透光体８が接着剤であるガラスフリットを介して嵌
合取着されており、換言すれば、メタルハライドランプ
１が凹面反射鏡６及び透光体８によって構成された筐体
９に収容されているものである。In addition, the opening on the front side of this reflecting mirror 6 is provided with a
A light-transmitting body 8 made of a light-transmitting material such as glass is fitted and attached via a glass frit, which is an adhesive, so as to close the metal halide lamp 1. 6 and a casing 9 constituted by a transparent body 8.
ここで、透光体８側に位置する電極３と接続する電気導
入体５は、凹面反射鏡６に穿設された取出孔１０から外
部に導出しており、また、他方の電気導入体５は、前述
の口金７に接続されている。Here, the electricity introducing body 5 connected to the electrode 3 located on the transparent body 8 side is led out to the outside from an extraction hole 10 made in the concave reflecting mirror 6, and the other electricity introducing body 5 is connected to the aforementioned base 7.
そして、凹面反射鏡６と透光体８との嵌合部周囲の透光
体８には、筐体９外部と挿通する例えば円形の通気口１
１が互いに対向するように２か所穿設されている。The light transmitting body 8 around the fitting portion between the concave reflector 6 and the light transmitting body 8 is provided with, for example, a circular ventilation hole 1 that is inserted into the outside of the housing 9.
1 are bored in two places facing each other.
上記のような構造の反射鏡付光源装置を液晶プロジェク
タ装置の光源ユニットとして組込み、投影画面（スクリ
ーン）上の平均照度の低下を観察したところ、第２図に
図示するように、図中実線で示す本実施例のものは、同
破線で示す筐体に通気口が形成されていないものに比較
して、大幅な照度低下の改善が確認された。When the light source device with a reflector with the above structure was incorporated as a light source unit of a liquid crystal projector device and the decrease in the average illuminance on the projection screen (screen) was observed, as shown in Figure 2, the solid line in the figure In the case of this example shown, a significant improvement in illuminance reduction was confirmed compared to the case shown by the same broken line in which no vent hole was formed in the case.
これは、光源点灯中の熱の影響により、光源を筐体内部
に固定する接着剤から、ガス等の不純物が発生し筐体で
最も低温となり易い透光体の内面に付着して堆積するが
、本実施例のものは、筐体外部と挿通する通気口が透光
体に形成されているために、メタルハライドランプの点
灯による熱に起因する接着剤等から発生した不純物は筐
体の外部に排出されて、透光体の内面に付着することが
防止でき、その結果投影画面（スクリーン）上の平均照
度の低下を低減できるものと推察される。This is because impurities such as gas are generated from the adhesive that fixes the light source inside the housing due to the heat generated when the light source is turned on, and these impurities adhere to and accumulate on the inner surface of the transparent material, which tends to be the coldest part of the housing. In the case of this example, since the vent hole that is inserted into the outside of the housing is formed in the transparent body, impurities generated from the adhesive and the like caused by the heat generated by lighting the metal halide lamp are not exposed to the outside of the housing. It is presumed that it is possible to prevent the particles from being discharged and adhering to the inner surface of the light-transmitting body, and as a result, it is possible to reduce the decrease in the average illuminance on the projection screen (screen).
尚、以上の実施例においては、通気口を透光体に形成し
たものについて説明しているが、凹面反射鏡にこの通気
口を形成したものでも良く、さらに、この通気口は光源
の電気導入体を外部に導出する取出孔を兼ねても良い。In the above embodiments, the vent hole is formed in the transparent body, but the vent hole may be formed in the concave reflecting mirror. It may also serve as an extraction hole for leading the body to the outside.
また、その通気口の形状等についても、円形に限られる
ものではなく、種々の変更が可能であり、また、対向配
置されるものに限らず、１つの通気口から不純物を排除
するものであっても良い。Furthermore, the shape of the vent is not limited to a circular shape, and various changes are possible.Also, the shape of the vent is not limited to those arranged facing each other, and impurities can be removed from a single vent. It's okay.
さらに、上記実施例においては、光源としてメタルハラ
イドランプを用いたものについて説明しているが、他の
種類の光源であっても、上記実施例と同様の効果が得ら
れる。Further, in the above embodiments, a metal halide lamp is used as the light source, but the same effects as in the above embodiments can be obtained even if other types of light sources are used.
本発明の反射鏡付光源装置によれば、筐体に通気口が形
成されているため、光源点灯による熱に起因する不純物
の筐体内部での残留が減少でき、その結果、放射光量の
低下を防止できる。According to the light source device with a reflector of the present invention, since the vent is formed in the housing, it is possible to reduce the amount of impurities remaining inside the housing due to heat generated by lighting the light source, and as a result, the amount of emitted light is reduced. can be prevented.
第１図は本発明の一実施例に係る反射鏡付光源装置を示
す概略図、第２図は光源点灯時間に伴う平均照度低下率
を示す実験結果、第３図は画像投影装置の基本原理を示
す構成図である。
１・・メタルハライドランプ（光源）
２・・・封止部 ３・・・電極
４・・・金属箔 ５・・・電気導入体６・・・凹
面反射鏡 ７・・・口金
８・・・透光体 ９・・・筐体
１０・・取出孔 １１・・通気口代理人弁理士
小 野 １）芳 弘
Ｈｌぜφ胛歴乙Fig. 1 is a schematic diagram showing a light source device with a reflector according to an embodiment of the present invention, Fig. 2 is an experimental result showing the average illuminance reduction rate with the lighting time of the light source, and Fig. 3 is the basic principle of the image projection device. FIG. 1...Metal halide lamp (light source) 2...Sealing part 3...Electrode 4...Metal foil 5...Electric introduction body 6...Concave reflecting mirror 7...Base 8...Transparent Light body 9... Housing 10... Extraction hole 11... Vent agent patent attorney
Ono 1) Hiroshi Yoshihiro
Claims (1)
前記凹面反射鏡によって反射された光を透過する透光体
とを備えた筐体と、前記筐体内に接着剤を介して固定収
容された光源とを具備した反射鏡付光源装置であって、
前記筐体には、通気口が形成されていることを特徴とす
る反射鏡付光源装置。a concave reflector; and closing an opening of the concave reflector;
A light source device with a reflecting mirror, comprising: a housing including a transparent body that transmits light reflected by the concave reflecting mirror; and a light source fixedly housed in the housing via an adhesive,
A light source device with a reflecting mirror, characterized in that a vent is formed in the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2271582A JPH04147122A (en) | 1990-10-09 | 1990-10-09 | Light source device with reflecting mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2271582A JPH04147122A (en) | 1990-10-09 | 1990-10-09 | Light source device with reflecting mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04147122A true JPH04147122A (en) | 1992-05-20 |
Family
ID=17502089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2271582A Pending JPH04147122A (en) | 1990-10-09 | 1990-10-09 | Light source device with reflecting mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04147122A (en) |
-
1990
- 1990-10-09 JP JP2271582A patent/JPH04147122A/en active Pending
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