JPH0256804A - Light source device - Google Patents
Light source deviceInfo
- Publication number
- JPH0256804A JPH0256804A JP63207410A JP20741088A JPH0256804A JP H0256804 A JPH0256804 A JP H0256804A JP 63207410 A JP63207410 A JP 63207410A JP 20741088 A JP20741088 A JP 20741088A JP H0256804 A JPH0256804 A JP H0256804A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- interference film
- reflecting mirror
- incident
- 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
- 230000003287 optical effect Effects 0.000 claims description 19
- 239000010408 film Substances 0.000 description 28
- 239000010410 layer Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 7
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000002367 halogens Chemical class 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
- H01K1/325—Reflecting coating
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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、光干渉膜を有するバルブを反射鏡に配設した
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 in which a bulb having an optical interference film is disposed on a reflecting mirror.
（従来の技術）
従来、光干渉膜を有するバルブを反射鏡に配設した光源
装置は、第３図に示す通り、（１）はハロゲン電球でタ
ングステンフィラメント（２）が反射鏡（３）の焦点に
位置するように配設されている。この場合反射鏡（３）
の反射面（３Ａ）は例えば回転放物面の形状を有し、フ
イラメン） （２） Ｋよって発生された光を反射面（
３Ａ）によって反射させてハロゲン電球（１）の前方に
照射するようになされている。(Prior Art) Conventionally, a light source device in which a bulb having an optical interference film is disposed on a reflecting mirror is shown in Fig. 3. (1) is a halogen bulb, and a tungsten filament (2) is attached to a reflecting mirror (3). It is arranged so that it is located at the focal point. In this case the reflector (3)
The reflecting surface (3A) has the shape of a paraboloid of revolution, for example, and the light generated by the filament (2) is reflected by the reflecting surface (3A).
3A) and irradiates it in front of the halogen bulb (1).
ハロゲン電球（１）は基部に一対の封着層（５）を封着
してなる頂部が半球状の縦長のガラスバルブ（６）を有
し、封着層（５）にそれぞれ電気的に接続された一対の
リート責７）の先端にフィラメント（２）を取付け。The halogen light bulb (1) has a vertically elongated glass bulb (6) with a hemispherical top formed by sealing a pair of sealing layers (5) to the base, and is electrically connected to each of the sealing layers (5). Attach the filament (2) to the tip of the pair of reeds (7).
また封着層（５）にそれぞれ電気的に接続された一対の
ピン（８）を外方に突出させてなる。Further, a pair of pins (8) each electrically connected to the sealing layer (5) are made to protrude outward.
一方反射鏡（３）は２反射面（３Ａ）の中央部が後方に
円筒状に突出する取付部（９）を有し、この取付部（９
）にハロゲン電球（１）の根元部（ＩＡ）を延長させた
状態でセメントα〔によって両者を一体に固着している
。On the other hand, the reflecting mirror (3) has a mounting part (9) in which the central part of the two reflecting surfaces (3A) protrudes rearward in a cylindrical shape.
) with the base (IA) of the halogen light bulb (1) extended, and the two are fixed together with cement α.
以上の構成に加えて、ハロゲン電球（１）のガラスバル
ブ（６）の表面には実質上はぼ全表面に亘って光干渉膜
の可視光透過赤外線反射膜ａ９を封着する。In addition to the above configuration, a visible light transmitting and infrared reflecting film a9, which is an optical interference film, is sealed over substantially the entire surface of the glass bulb (6) of the halogen light bulb (1).
この反射膜（１ツとしては、シリコン、酸化チタン等の
半導体を例えば蒸着によって単層に形成したものを適用
している。This reflective film (for example, a single layer formed of a semiconductor such as silicon or titanium oxide by vapor deposition) is used.
また反射鏡（３）は透明ガラスの内表面に可視光反射赤
外線透過膜αｅを耐着して可視光に対する反射面を形成
している。この透過膜ａｅとしては屈折率の異なる２種
の物質の薄膜をコーティングにより交互に重ね合せて多
層に積層したものを適用している。Further, the reflecting mirror (3) has a visible light reflecting infrared transmitting film αe adhered to the inner surface of the transparent glass to form a reflective surface for visible light. As the transmission film ae, a multilayer structure in which thin films of two types of substances having different refractive indexes are alternately layered by coating is used.
これによると、フィラメント（２）から発した光は光干
渉膜（６）Ｋ入射し、光の干渉作用によって赤外線の大
部分はフィラメント（２）方向に反射され、可視光は透
過される。さらに光干渉膜（６）によって反射されなか
った赤外線は２反射鏡（３）に付着している光干渉膜（
」９によって反射鏡（３）を透過する。このため１反射
鏡（３）では可視光だけしか反射されず。According to this, light emitted from the filament (2) enters the optical interference film (6)K, and due to the interference effect of the light, most of the infrared rays are reflected toward the filament (2), while visible light is transmitted. Furthermore, the infrared rays not reflected by the light interference film (6) are absorbed by the light interference film (2) attached to the 2-reflector (3).
9 through the reflecting mirror (3). Therefore, only visible light is reflected by the single reflecting mirror (3).
赤外線の大部分は照射されなく、なるというものである
。Most of the infrared rays are not irradiated.
（発明が解決しようとする課題）
しかしながら、フィラメント（２）から発した光は光干
渉膜（５）に入射する際、その入射角が大きくなる場合
があり、入射角が大きくなると、光干渉膜（５）を透過
する光の波長域が変化し、赤外線を透過することがある
。(Problem to be Solved by the Invention) However, when the light emitted from the filament (2) enters the light interference film (5), the angle of incidence may become large. (5) The wavelength range of light that passes through it changes, and infrared rays may pass through it.
また、透過された上記赤外線は、光干渉膜ａ５１により
反射鏡（３）を透過するわけであるが、この際にも、上
記干渉膜（Ｉりに対しても大きな入射角度で入射すれば
干渉されず赤外線は反射鏡（３）ＶＣより反射されるこ
ととなる。In addition, the transmitted infrared rays are transmitted through the reflecting mirror (3) by the optical interference film a51, but at this time as well, if the infrared rays are incident on the interference film (I) at a large angle of incidence, interference will occur. Instead, the infrared rays are reflected from the reflecting mirror (3) VC.
このため、赤外線は効率よく減少せず、照射されてしま
うのである。For this reason, infrared rays are not efficiently reduced and are instead irradiated.
本発明は、上記赤外線にかかわらず光干渉膜の作用が不
十分なために透過された光を反射しないように反膜鏡を
配設した光源装置を提供するものである。The present invention provides a light source device in which a mirror is disposed so as not to reflect the transmitted light due to the insufficient effect of the optical interference film regardless of the above-mentioned infrared rays.
（１１題を解決するための手段） 上記課題を解決するために１本発明においては。 (Means for solving 11 problems) In order to solve the above-mentioned problem, one aspect of the present invention is as follows.
光源構体を収容し光干渉膜を有するバルブを反射鏡内に
配設してなる光源装置において、光源構体から光干渉へ
入射した光のうち入射角がほぼ４５度以下で入射した光
を反射し、４５度を越える角度で入射した光を反射しな
いよ５に反射鏡を配設している。In a light source device in which a bulb containing a light source assembly and having an optical interference film is disposed in a reflecting mirror, the light that enters the optical interference from the light source assembly at an angle of incidence of approximately 45 degrees or less is reflected. , a reflecting mirror is provided at 5 so as not to reflect light incident at an angle exceeding 45 degrees.
（作用）、
本発明によると、光干渉膜に入射角がはＶ１４５度以下
で入射した光は、干渉膜の作用を受け、その結果所望の
波長域の光を得ることができる。しかし、入射角がほぼ
４５度を越える角度であれば。(Function) According to the present invention, light that enters the optical interference film at an incident angle of V145 degrees or less is affected by the interference film, and as a result, light in a desired wavelength range can be obtained. However, if the angle of incidence exceeds approximately 45 degrees.
所望の波長域の光を得ることができない。It is not possible to obtain light in the desired wavelength range.
そこで、この所望でない波長域の光を反射しないように
反射鏡を配設し、所望の波長域の光のみを反射すること
ができる。Therefore, a reflecting mirror is arranged so as not to reflect the light in the undesired wavelength range, and only the light in the desired wavelength range can be reflected.
（発明の実施例） 本発明の一実施例を図面を参照して説明する。(Example of the invention) An embodiment of the present invention will be described with reference to the drawings.
第１図において、（１）はたとえば石英からなるガラス
バルブ（６）の表面ＫＴｉ０２と５ｉ０２を交互に重層
してなる光干渉膜α９を形成したハロゲン電球である。In FIG. 1, (1) is a halogen light bulb in which a light interference film α9 formed by alternately layering KTi02 and 5i02 on the surface of a glass bulb (6) made of quartz, for example, is formed.
この電球（１）には光源構体であるフィラメント（２）
が配設され光が発せられることとなる。さらに、この電
球（１）の封止部（１ａ）には反射鏡（３）の円筒部（
９）がセメント等により接着固定されている。This light bulb (1) has a filament (2) that is the light source structure.
will be placed and light will be emitted. Furthermore, the sealing part (1a) of this light bulb (1) has a cylindrical part (
9) is adhesively fixed with cement or the like.
このとき、フィラメント（２）から発せられた光は。At this time, the light emitted from filament (2) is.
干渉膜（１９に入射するが、入射角が４５度を越えて入
射した光の延長上回、■には反射鏡が配設されないよう
に設計されている。なぜなら干渉膜αＦ９に対し、光の
入射角が４５度を越えた角度で入射されると、透過され
る光が所望の波長域からずれるためである。この理由を
以下に説明する。第２図において、（Ａ）を光源、０３
）をこの光源囚に対設した屈折層とし、この屈折層■の
厚さをｄｆｆｌｌｌｌｌ屈折率をｎとする。そうして、
光源囚から３本の光束（Ｒ１）、（Ｒ２）、（Ｒ３）が
それぞれ入射角θｌ（０度）。The interference film (19) is designed so that a reflection mirror is not installed in (2) beyond the extension of the light that has entered at an angle of incidence exceeding 45 degrees.This is because the interference film αF9 This is because if the incident angle exceeds 45 degrees, the transmitted light will deviate from the desired wavelength range.The reason for this will be explained below.In Fig. 2, (A) is the light source, 03
) is a refractive layer placed opposite to this light source, and the thickness of this refractive layer (2) is dffllllll, and the refractive index is n. Then,
Three beams of light (R1), (R2), and (R3) from the light source each have an incident angle θl (0 degrees).
θ２（小さい。）、θ３（大きい。）で入射し、この屈
折層（Ｂｌ内を透過して下方に向５とする。このとき。The light enters at θ2 (small) and θ3 (large), and passes through this refractive layer (Bl) downward in the direction 5.
同じ厚さの屈折層でも入射角θが大きいと層の厚さが大
きくなったと同じ結果になり、放射点における光の位相
がずれる。そこで、入射角θに起因する干渉の位相のず
れδを求めると次の式で表わされる。Even if the refractive layer has the same thickness, if the incident angle θ is large, the result will be the same as if the layer thickness was increased, and the phase of the light at the emission point will shift. Therefore, when the interference phase shift δ due to the incident angle θ is calculated, it is expressed by the following equation.
４πｎｄ ｃｏｓθ δ ＝ λ ここでλは光の波長を示す。4πnd cosθ δ = λ Here, λ indicates the wavelength of light.
すなわち、入射角θが大きくなると干渉の位相は短波長
側にずれることになる。That is, as the incident angle θ increases, the phase of interference shifts toward the shorter wavelength side.
この理由から、入射角がほぼ４５度を越えて光干渉膜（
１９に入射した光については所望の波長域とは異なる波
長域の光がガラスバルブ（６）より透過される。そして
、この波長域の光の延長上には反射鏡が設置されていな
いため、この光が反射鏡によって前面に反射されること
はない。For this reason, when the angle of incidence exceeds approximately 45 degrees, the optical interference film (
Regarding the light incident on the glass bulb (6), light in a wavelength range different from the desired wavelength range is transmitted through the glass bulb (6). Since no reflecting mirror is installed on the extension of the light in this wavelength range, this light is not reflected to the front by the reflecting mirror.
したがって、入射角がほぼ４５度以下で光干渉膜０９に
入射した光について所望の波長域の光が得られた光のみ
を反射鏡（３）により前面に反射することができる。Therefore, with respect to the light incident on the optical interference film 09 at an incident angle of approximately 45 degrees or less, only the light in the desired wavelength range can be reflected to the front by the reflecting mirror (3).
本実施例では赤外領域の光や黄色や橙色、赤色といった
所望の光を得るために有効である。This embodiment is effective for obtaining desired light such as light in the infrared region, yellow, orange, and red.
また、光干渉膜としてはＴｉ０ｚとＳ ｉＯｚの重層さ
せたものについて述べたがＺｎＳとＭｇＦ等でも良い。Furthermore, although the optical interference film has been described as a multilayer of TiOz and SiOz, ZnS and MgF may also be used.
本発明によると、光源構体を′収容し光干渉膜を有する
バルブを反射鏡内に配設してなる光源装置において、上
記反射鏡は光源構体から光干渉膜へ入射した光のうち入
射角がほぼ４５度以下で入射した光を反射し、４５度を
越える角度で入射した光を反射しないように配設されて
いるため、光干渉膜へ入射角がほぼ４５度以下で入射し
た光で所望の波長域の光が得られた光のみを反射鏡に反
射することができる。According to the present invention, in a light source device in which a bulb housing a light source assembly and having an optical interference film is disposed within a reflecting mirror, the reflecting mirror has an angle of incidence of light incident on the optical interference film from the light source assembly. The arrangement is such that it reflects light incident at an angle of approximately 45 degrees or less, and does not reflect light incident at an angle exceeding 45 degrees, so that light incident at an angle of approximately 45 degrees or less enters the optical interference film. Only the light obtained in the wavelength range can be reflected onto the reflecting mirror.
第１図は１本発明の一実施例を示す縦断面図。
第２図は光干渉膜と入射光と関係を示す模式図。
第３図は従来の反射鏡付電球の縦断面図である。
（２）・・・・・・フィラメント、（３）・・・・・・
反射鏡。
（６）・・・・・・ガラスバルブ、（１９・・・・・・
光干渉膜。FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. FIG. 2 is a schematic diagram showing the relationship between an optical interference film and incident light. FIG. 3 is a longitudinal sectional view of a conventional light bulb with a reflector. (2)...Filament, (3)...
Reflector. (6)...Glass bulb, (19...
Optical interference film.
Claims (1)
配設してなる光源装置において、上記反射鏡は光源構体
から光干渉膜へ入射した光のうち入射角がほぼ４５度以
下で入射した光を反射し、４５度を越える角度で入射し
た光を反射しないように配設されていることを特徴とす
る光源装置。In a light source device in which a bulb that accommodates a light source assembly and has an optical interference film is disposed within a reflecting mirror, the reflecting mirror receives light that is incident on the optical interference film from the light source assembly at an incident angle of approximately 45 degrees or less. A light source device characterized in that the light source device is arranged so as to reflect light incident at an angle exceeding 45 degrees and not reflect light incident at an angle exceeding 45 degrees.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207410A JPH0256804A (en) | 1988-08-23 | 1988-08-23 | Light source device |
| EP89308487A EP0361674A1 (en) | 1988-08-23 | 1989-08-22 | Light source |
| KR1019890011965A KR900003960A (en) | 1988-08-23 | 1989-08-23 | Reflective light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207410A JPH0256804A (en) | 1988-08-23 | 1988-08-23 | Light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0256804A true JPH0256804A (en) | 1990-02-26 |
Family
ID=16539281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63207410A Pending JPH0256804A (en) | 1988-08-23 | 1988-08-23 | Light source device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0361674A1 (en) |
| JP (1) | JPH0256804A (en) |
| KR (1) | KR900003960A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4401270A1 (en) * | 1994-01-18 | 1995-07-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Reflector lamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517491A (en) * | 1983-08-01 | 1985-05-14 | General Electric Company | Incandescent lamp source utilizing an integral cylindrical transparent heat mirror |
| EP0197931A4 (en) * | 1984-10-23 | 1988-04-27 | Duro Test Corp | Variable index film for transparent heat mirrors. |
-
1988
- 1988-08-23 JP JP63207410A patent/JPH0256804A/en active Pending
-
1989
- 1989-08-22 EP EP89308487A patent/EP0361674A1/en not_active Withdrawn
- 1989-08-23 KR KR1019890011965A patent/KR900003960A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900003960A (en) | 1990-03-27 |
| EP0361674A1 (en) | 1990-04-04 |
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