JPH03194848A - Reflection-type light source apparatus - Google Patents
Reflection-type light source apparatusInfo
- Publication number
- JPH03194848A JPH03194848A JP33310489A JP33310489A JPH03194848A JP H03194848 A JPH03194848 A JP H03194848A JP 33310489 A JP33310489 A JP 33310489A JP 33310489 A JP33310489 A JP 33310489A JP H03194848 A JPH03194848 A JP H03194848A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- infrared rays
- metal halide
- light source
- reflecting
- 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
- 229910001507 metal halide Inorganic materials 0.000 claims abstract description 15
- 150000005309 metal halides Chemical class 0.000 claims abstract description 15
- 239000010409 thin film Substances 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 abstract description 11
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011888 foil Substances 0.000 abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 239000011733 molybdenum Substances 0.000 abstract description 5
- 239000003086 colorant Substances 0.000 abstract 2
- 230000001788 irregular Effects 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004040 coloring Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は一般照明、オーツ（−へラドプロジェクタ、液
晶プロジェクタなどに使用する反射鏡とメタルハライド
ショートアークランプが一体となった反射型光源装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reflective light source device in which a reflecting mirror and a metal halide short arc lamp are integrated for use in general lighting, OAT projectors, liquid crystal projectors, etc. .
［従来の技＃Ｉ］
従来の反射型光源装置を第２図を用いて説明する。第２
図（α）は従来の反射型光源装置の断面図である。２０
１は反射面が放物面状あるいは楕円である反射板である
。また２０２はメタルハライドショートアークランプで
ある。第２図（α）のようなメタルハライドショートア
ークランプを水平に（すなわち地面に対してランプ電極
が平行になるように）点灯した場合、重力の作用により
ランプ管中金属蒸気濃度が変化し、管の下側部分は蒸気
濃度が濃すぎアークが飛ばなくなる。従ってアークの状
態は第２図（ｂ）のようになる。２０５はアークの状態
を示すが、このように弓なりの状態となる。−度このよ
うに弓なりとなると、管壁温度も不均一となる。つまり
上側のアークに近いほうが温度が上がり、下側のアーク
から遠い部分の温度が下がりアークの位置はますます弓
なりになる。これは管内蒸気の自然対流との平衡点とな
るまで続く。なお２０４は電極、２０５はモリブデン箔
、２０６は石英管である。[Conventional Technique #I] A conventional reflection type light source device will be explained using FIG. 2. Second
Figure (α) is a cross-sectional view of a conventional reflective light source device. 20
1 is a reflecting plate whose reflecting surface is parabolic or elliptical. Further, 202 is a metal halide short arc lamp. When a metal halide short arc lamp as shown in Figure 2 (α) is lit horizontally (that is, with the lamp electrode parallel to the ground), the concentration of metal vapor in the lamp tube changes due to the action of gravity, causing The vapor concentration in the lower part of the arc is too high for the arc to fly. Therefore, the state of the arc is as shown in FIG. 2(b). Reference numeral 205 indicates the state of the arc, which is arched like this. - degree When the tube becomes arched like this, the temperature of the tube wall also becomes non-uniform. In other words, the temperature increases in the area closer to the upper arc, and the temperature decreases in the area farther from the lower arc, making the arc position more and more arched. This continues until a point of equilibrium with the natural convection of the steam in the pipe is reached. Note that 204 is an electrode, 205 is a molybdenum foil, and 206 is a quartz tube.
［発明が解決しようとする課題］
しかし、前述の従来技術ではアークが弓なりであること
から（る種々の問題を有する。第１′に管壁温度がメタ
ルハライドランプの上下で違っているため、管壁上部が
像度に熱（なり、寿命が低下する。第２に色むらができ
る。そこで本発明はこのような問題点を解決するもので
、その目的とするところは、長寿命の、色むらのない反
射型光源装置を提供するところにある。[Problems to be Solved by the Invention] However, the above-mentioned prior art has various problems because the arc is arched.Firstly, the tube wall temperature is different between the upper and lower parts of the metal halide lamp. The upper part of the wall heats up the image, reducing its lifespan.Secondly, uneven coloring occurs.The present invention is intended to solve these problems, and its purpose is to provide a long-lasting color solution. The purpose of the present invention is to provide a reflective light source device with no unevenness.
［課題を解決するための手段］
本発明の反射型光源装置はメタルハライドショートアー
クランプのアーク近傍下部に赤外線のみを反射する薄膜
を蒸着あるいは塗布したことを特徴とする。[Means for Solving the Problems] The reflective light source device of the present invention is characterized in that a thin film that reflects only infrared rays is deposited or coated on the lower part near the arc of a metal halide short arc lamp.
［作用コ
本発明の上記の構成によれば管壁下部の温度が上がり、
下部の管中金属蒸気濃度が下がりアークの弓なり現象が
な（なる。[Operation] According to the above structure of the present invention, the temperature at the lower part of the tube wall increases,
The concentration of metal vapor in the lower part of the tube decreases, and the bowing phenomenon of the arc disappears.
［実施例コ
第１図（α）は本発明の実施例におけるメタルハライド
ランプの構造図である。１０１は反射面が放物面状ある
いは楕円である反射板である。また１０２はメタルハラ
イドシロ−ドアークランプである。１０５は赤外線を反
射するために塗布あるいは蒸着された薄膜である。第１
図（ｂ）はメタルハライド２ンブのみを取りだしたもの
であるこのように薄膜のついたメタルハライドランプは
アークが弓なりにならない。その様子を１０４に示す。Embodiment FIG. 1 (α) is a structural diagram of a metal halide lamp in an embodiment of the present invention. Reference numeral 101 denotes a reflecting plate whose reflecting surface is parabolic or elliptical. Further, 102 is a metal halide door clamp. 105 is a thin film coated or deposited to reflect infrared rays. 1st
Figure (b) shows only two metal halide lamps taken out.A metal halide lamp with a thin film like this does not have an arched arc. The situation is shown in 104.
また１０５は電極、１０６はモリブデン箔である。膜は
赤外＋ＩＩｊ！ヲどの程度反射するかによって何層にす
るかがきまる。層数を増すと赤外線の反射量が増し、膜
のある部分の管壁の温度が上がる。あまり下部管壁温度
が高くなりすぎると下部管壁温度が高くなりすぎアーク
の弓なりは逆となる。従って最適の厚みがある。この厚
みは膜の成分にも依存する。膜として例えば０ｅｏ２
（高屈折率膜 ｎ＋２．２）及びＭｇＦｔ（低屈折率膜
）しかし実際には膜の種類は重要ではない。赤外部のス
ペクトルを反射するランプチューブの下部にあるという
ことが重要である。ごのことによってランプ管壁の温度
不均一は大幅に改善される。Further, 105 is an electrode, and 106 is a molybdenum foil. The film is infrared+IIj! How many layers to use depends on how much it reflects. Increasing the number of layers increases the amount of infrared rays reflected, increasing the temperature of the tube wall where the film is located. If the lower tube wall temperature becomes too high, the lower tube wall temperature becomes too high and the arching of the arc becomes reversed. Therefore, there is an optimal thickness. This thickness also depends on the components of the membrane. For example, 0eo2 as a membrane.
(high refractive index film n+2.2) and MgFt (low refractive index film) However, in reality, the type of film is not important. It is important that the lower part of the lamp tube reflects the infrared spectrum. This greatly improves temperature non-uniformity on the lamp tube wall.
ランプ下部のどの部分に膜がついている必要があるかと
いうことには次のように考えられる。第一にアーク付近
の石英管には必ず下部に膜を蒸着する。他の言葉で言う
と、発光部の石英賃下部には膜をつける。封止部はつけ
てもつけなくてもよい。The following can be considered as to which part of the lower part of the lamp the film should be attached to. First, a film must be deposited on the bottom of the quartz tube near the arc. In other words, a film is attached to the lower part of the quartz layer in the light emitting part. The sealing portion may or may not be attached.
次にこの構造の応用について述べる。層厚によってアー
クの位置をコントロールできる。そのため色むらが必要
で、かつ色むらの程度がコントロールされている必要の
ある場合、層厚をある厚みにつ（りこむことによって、
アークの位置をコントロールすることが可能となる。た
だし現在の所厚みを理論的に導（ことは難しく、実験的
に決める必要がある。Next, we will discuss the application of this structure. The position of the arc can be controlled by changing the layer thickness. Therefore, if uneven coloring is required and the degree of uneven coloring needs to be controlled, by increasing the layer thickness to a certain level,
It becomes possible to control the position of the arc. However, it is currently difficult to derive the thickness theoretically, and it must be determined experimentally.
［発明の効果コ
以上述べたように本発明によればアークが弓なりになら
なくなることにより、寿命がのびる、色むらがなくなる
という効果を有する。[Effects of the Invention] As described above, according to the present invention, since the arc is no longer arched, it has the effects of extending the life and eliminating color unevenness.
第１図（α）は本発明反射型光源装置の断面図第１図（
ｂ）は本発明メタルハライドショートアークランプの断
面図。
第２図（α）は従来の反射型光源装置の断面図第２図（
ｂ）は従来のメタルノ１ライドショートアークランプの
断面図。
１０１・・・・・・・・・反射板
１０２・・・・・・・・・本発明メタルノ１ライドショ
ートアークランプ
５・・・・・・・・・塗布あるいは蒸着膜４・・・・・
・・・・アーク
５・・・・・・・・・電 極
６・・・・・・・・・モリブデン箔
１・・・・・・・・・反射板
２・・・・・・・・・従来のメタルハライークランプ
５・・・・・・・・・アーク
４・・・・・・・・・電 極
５・・・・・・・・・モリブデン箔
６・・・・・・・・・石英管
ドショー
トアFigure 1 (α) is a cross-sectional view of the reflective light source device of the present invention.
b) is a sectional view of the metal halide short arc lamp of the present invention. Figure 2 (α) is a cross-sectional view of a conventional reflective light source device.
b) is a cross-sectional view of a conventional metal 1ride short arc lamp. 101...Reflector plate 102...Metal 1ride short arc lamp of the present invention 5...Coating or vapor deposition film 4...
・・・・・・Arc 5・・・・・・・・・Electrode 6・・・・・・Molybdenum foil 1・・・・・・Reflector 2・・・・・・・・・・Conventional metal halai clamp 5......Arc 4...Electrode 5...Molybdenum foil 6...・・Quartz tube de chautre
Claims (1)
の開口から前記反射板内に突出するように配置されたメ
タルハライドショートアークランプからなる反射型光源
装置において、メタルハライドショートアークランプが
地面に対して水平に配置された場合、メタルハライドシ
ョートアークランプのアーク近傍下部に赤外線のみを反
射する薄膜を蒸着、あるいは塗布したことを特徴とする
反射型光源装置。In a reflective light source device consisting of a reflector whose reflective surface is parabolic or elliptical, and a metal halide short arc lamp arranged to protrude into the reflector from an opening of the reflector, the metal halide short arc lamp is placed on the ground. A reflective light source device characterized in that a thin film that reflects only infrared rays is deposited or coated on the lower part near the arc of a metal halide short arc lamp when placed horizontally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33310489A JPH03194848A (en) | 1989-12-22 | 1989-12-22 | Reflection-type light source apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33310489A JPH03194848A (en) | 1989-12-22 | 1989-12-22 | Reflection-type light source apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03194848A true JPH03194848A (en) | 1991-08-26 |
Family
ID=18262324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33310489A Pending JPH03194848A (en) | 1989-12-22 | 1989-12-22 | Reflection-type light source apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03194848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08241694A (en) * | 1994-10-31 | 1996-09-17 | General Electric Co <Ge> | Light source with film of transparent heat preservable property |
| KR100372959B1 (en) * | 1994-01-28 | 2003-05-16 | 파텐트-트로이한트-게젤샤프트 퓌어 엘렉트리쉐 글뤼람펜 엠베하 | Metal Halide Cargo Gas Discharge Lamp for Projection |
-
1989
- 1989-12-22 JP JP33310489A patent/JPH03194848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100372959B1 (en) * | 1994-01-28 | 2003-05-16 | 파텐트-트로이한트-게젤샤프트 퓌어 엘렉트리쉐 글뤼람펜 엠베하 | Metal Halide Cargo Gas Discharge Lamp for Projection |
| JPH08241694A (en) * | 1994-10-31 | 1996-09-17 | General Electric Co <Ge> | Light source with film of transparent heat preservable property |
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