JP2570160Y2 - Lightweight reflector base - Google Patents
Lightweight reflector baseInfo
- Publication number
- JP2570160Y2 JP2570160Y2 JP11263591U JP11263591U JP2570160Y2 JP 2570160 Y2 JP2570160 Y2 JP 2570160Y2 JP 11263591 U JP11263591 U JP 11263591U JP 11263591 U JP11263591 U JP 11263591U JP 2570160 Y2 JP2570160 Y2 JP 2570160Y2
- Authority
- JP
- Japan
- Prior art keywords
- dark
- reflector
- layer
- reflector base
- lightweight
- 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.)
- Expired - Fee Related
Links
Landscapes
- Surface Treatment Of Glass (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、天体観測やビ−ム集
光、あるいはその他の宇宙産業等に用いられる軽量反射
鏡用基体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base for a lightweight reflector used in astronomical observation, beam focusing, and other space industries.
【０００２】[0002]
【従来の技術】従来、天体用反射鏡や高エネルギ−ビ−
ム等の光学的な集光に用いられる反射鏡は、例えば、石
英ガラス又は高純度珪酸がラス等を素材とする無気泡反
射鏡板を載置する保持台に一体に取り付け、その反射鏡
面に光学的な反射層として、アルミニウム，銀あるいは
金のような金属の蒸着膜を形成させ、これを操作用支持
台に取り付けて自由に回転操作される。このような光学
的反射鏡は、高い鏡面精度を有する鏡表面が要求され
る。2. Description of the Related Art Conventionally, astronomical reflectors and high energy beams have been used.
The reflector used for optically condensing the beam is, for example, integrally mounted on a holding table on which a bubble-free reflector plate made of quartz glass or high-purity silica is made of lath or the like. As a typical reflection layer, a vapor deposition film of a metal such as aluminum, silver or gold is formed, and this is mounted on an operation support base and freely rotated. Such an optical reflecting mirror requires a mirror surface having high mirror surface accuracy.
【０００３】また、そのような反射鏡は、これまで直径
が５〜20cm程度の小型のものが主流であったが、近年、
その実用的に望ましい高い集光率等が得られる30cm〜１
ｍ、あるいはそれ以上の径を有する大型のものが要求さ
れるようになった。しかし、大型になればその重量は加
速的に大きくなり、その重さのために鏡面が変形したり
歪を生じたりするので、反射鏡全重量の軽量化とそのよ
うな面精度が低下しない一層高い反射面精度が保持され
る反射鏡が要望されるようになった。[0003] In addition, such reflectors have been mainly small ones having a diameter of about 5 to 20 cm.
30cm-1 which can obtain the high light-collection rate desirable for practical use
A large size having a diameter of m or more has been required. However, as the size increases, the weight increases at an accelerating rate, and the mirror surface is deformed or distorted due to the weight, so that the total weight of the reflecting mirror is reduced and such surface accuracy is not reduced. There has been a demand for a reflecting mirror that maintains high reflecting surface accuracy.
【０００４】本考案者らは、上記要望を解決すべく研究
を重ねた結果、石英ガラス反射鏡板を載置するための保
持台としてシリカガラス発泡体の層が極めて優れている
ことを見出し、先に提案した（特願平３-119258号）。
しかし、シリカガラス発泡体は白く、その表面部が乱反
射するので、特に、研磨した透明な反射鏡板の表面のミ
ル単位の微細な傷の大きさと数を検査するのに極めて不
都合であり、鏡面の精度をより高めるのに大きな障害で
あった。The inventors of the present invention have conducted studies to solve the above-mentioned demands, and as a result, have found that a silica glass foam layer is extremely excellent as a support for mounting a quartz glass reflector plate. (Japanese Patent Application No. 3-119258).
However, since the silica glass foam is white and its surface is irregularly reflected, it is extremely inconvenient to inspect the size and number of fine scratches, particularly in mils, on the surface of a polished transparent reflector plate. It was a major obstacle to improving accuracy.
【０００５】[0005]
【考案が解決しようとする課題】従って、本考案の課題
は、軽量且つ反射鏡面の面精度の優れた軽量反射鏡を提
供することにある。また、他の課題は、反射鏡面の微細
な傷の検査が容易で、表面に不都合な傷が可及的に少な
い望ましい高精度表面を持つ反射鏡を提供することにあ
る。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lightweight reflector having a light weight and excellent surface accuracy of the reflector surface. Another object of the present invention is to provide a reflecting mirror having a desirable high-precision surface which allows easy inspection of minute scratches on the reflecting mirror surface and has as few undesired scratches on the surface as possible.
【０００６】[0006]
【課題を解決するための手段】本考案者らは、上記課題
を解決する手段について、特に、その検査を有利に実施
することができ、高精度の反射表面を持つ反射鏡基体を
提供し得る方法について各種反射鏡基体の試作検討を重
ねた結果、反射鏡板の裏側を暗色にすることが極めて有
効であることを見出した。Means for Solving the Problems The inventors of the present invention can provide a reflector base having a highly accurate reflecting surface, especially for the means for solving the above-mentioned problems, which can be advantageously inspected. As a result of repeated examinations of various reflector bases for the method, it was found that it was extremely effective to darken the back side of the reflector plate.
【０００７】すなわち、本考案は、シリカガラス発泡体
層、暗色層及び石英ガラス又は高純度珪酸ガラス製の無
気泡透明反射鏡板を順次積層融着一体化して成る軽量反
射鏡基体を要旨とするものである。That is, the present invention provides a lightweight reflector base which is formed by sequentially laminating and integrating a silica glass foam layer, a dark layer and a bubble-free transparent reflector plate made of quartz glass or high-purity silicate glass. It is.
【０００８】本考案の軽量反射鏡基体は、上記のよう
に、透明反射鏡板とこれを一体に保持するシリカガラス
発泡体との間に黒色層を形成させた点に技術的特徴があ
る。しかして、その透明反射鏡板は、温度変化に対して
実質的に変形しない素材で構成させることが重要で、ま
た、反射鏡形成用板として可及的高純度の高珪酸ガラス
や石英ガラスからなる気泡を含まない透明な板が好まし
く用いられる。The light reflecting mirror substrate of the present invention has a technical feature in that a black layer is formed between the transparent reflecting mirror plate and the silica glass foam which integrally holds the transparent reflecting mirror plate as described above. Therefore, it is important that the transparent reflector plate is made of a material that does not substantially deform in response to a temperature change, and is made of high silicate glass or quartz glass having a high purity as a reflector forming plate. A transparent plate containing no air bubbles is preferably used.
【０００９】この反射鏡板は、その利用目的に応じて、
平坦面，凹曲面あるいは凸曲面に形成される。これを保
持するシリカガラス発泡体層は、その接合上面が反射鏡
板の裏面に対応する形状に予め形成され一体化される。
一体化された反射鏡基体の反射面には、利用しようとす
る光の種類により適切な金属の蒸着膜が形成される。[0009] The reflecting mirror plate can be used in accordance with the purpose of use.
It is formed as a flat surface, a concave curved surface or a convex curved surface. The silica glass foam layer holding this is preliminarily formed and integrated into a shape corresponding to the back surface of the reflecting mirror plate, with the upper joint surface thereof.
An appropriate metal deposition film is formed on the reflection surface of the integrated reflector base according to the type of light to be used.
【００１０】また、反射鏡板を保持するシリカガラス発
泡体層は、好ましくは、99重量％以上の酸化珪素から成
る石英ガラス又は高珪酸ガラス質の多孔性発泡体であっ
て、0.1〜１ｇ／cm3程度の見掛け密度を有するものが好
ましく用いられる。その多孔性発泡体の見掛け密度が0.
1ｇ／cm3未満では、反射鏡板を支える支持強度が不足し
て自重によって変形し易くなり、また、１ｇ／cm3を超
えると、軽量化が不充分となり、操作性の低下だけでな
く、自重により鏡面が変形する傾向が増大するので不都
合である。実用的に好ましい密度は、0.2〜0.8ｇ／cm3
である。The silica glass foam layer holding the reflector plate is preferably a porous silica glass or high silicate glass foam comprising at least 99% by weight of silicon oxide, and is 0.1 to 1 g / cm. Those having an apparent density of about 3 are preferably used. The apparent density of the porous foam is 0.
If it is less than 1 g / cm 3 , the supporting strength for supporting the reflector plate will be insufficient, and it will be easily deformed by its own weight. If it exceeds 1 g / cm 3 , the weight will be insufficient and not only the operability will decrease, but also the weight will decrease. This increases the tendency of the mirror surface to deform, which is inconvenient. A practically preferred density is 0.2 to 0.8 g / cm 3
It is.
【００１１】また、このような発泡体は、主として独立
気泡で構成させることが好ましく、そのような独立気泡
によって形成される３次元的格子構造のネットワ−クを
有する多孔性発泡体は、あらゆる方向への一層高い圧縮
強度が保証される。It is preferable that such a foam is mainly composed of closed cells, and a porous foam having a network having a three-dimensional lattice structure formed by such closed cells can be used in any direction. Higher compressive strength is guaranteed.
【００１２】かかる多孔性発泡体は、反射鏡用板を全面
にわたって均一に支持するから、研磨における反射鏡用
板表面に加わる押圧力に対して優れた抵抗性を有するだ
けでなく、面に平行な方向にも優れた抵抗性強度を与え
るので、反射鏡用板の保持部材として極めて望ましい。[0012] Since such a porous foam uniformly supports the reflector plate over the entire surface, the porous foam not only has excellent resistance to the pressing force applied to the surface of the reflector plate during polishing, but also has a shape parallel to the surface. Since it provides excellent resistance strength in various directions, it is extremely desirable as a holding member for a reflector plate.
【００１３】本考案の軽量反射鏡用基体においては、上
記の反射鏡用板とこれを支持する軽量発泡体との接合部
に暗色層が一体に設けられる。この暗色層は、特に黒色
が好ましいが、非光沢性で乱反射性のない暗い色調であ
れば反射鏡面の検査に有効であり、従って、本考案の反
射鏡基体における暗色層とは、反射鏡面の傷の検査に望
ましい相対的に暗い色調の層を包含する。In the lightweight reflector base of the present invention, a dark layer is integrally provided at the joint between the reflector plate and the lightweight foam supporting the reflector plate. The dark layer is preferably black in particular, but a dark color that is non-glossy and does not have irregular reflection is effective for inspection of the reflecting mirror surface. Therefore, the dark layer in the reflecting mirror substrate of the present invention is the same as the reflecting mirror surface. Includes a relatively dark shade layer that is desirable for wound inspection.
【００１４】かかる暗色層の形成に用いられる暗色形成
用物質としては、例えば、炭素微粉末，水洗精選したタ
−ル，ピッチ，アスファルト及び酸化鉄を代表的に挙げ
ることができるが、これらは二種以上を組み合わせて用
いることができる。これらの物質類は、融着接合される
鏡面板とシリカ発泡体層の接合一体化に使用される耐熱
性シリコ−ン接着剤や、加熱融着剤として用いられる発
泡体の軟化点より低い軟化点を有するシリカ粉末に添加
使用してもよく、あるいは酸化鉄等を含む黒色石英等の
暗色板を反射鏡板に積層接合し、発泡体層と一体化する
こともできる。[0014] Examples of the dark-color forming substance used for forming such a dark-colored layer include carbon fine powder, tar selected by washing with water, pitch, asphalt, and iron oxide. More than one species can be used in combination. These materials are softened below the softening point of the heat-resistant silicone adhesive used for joining and integrating the mirror-surface plate and the silica foam layer to be fused and the foam used as a heat-sealing agent. It may be used by adding to a silica powder having dots, or a dark plate such as black quartz containing iron oxide or the like may be laminated and joined to the reflector plate to be integrated with the foam layer.
【００１５】このように形成された反射鏡用基体は、そ
の最上層の反射鏡板の表面が所望の平面又は曲面に研磨
され、検査をしながら微細な傷ができるだけ少ない状態
に研磨仕上げされた後、その研磨反射鏡表面に、例え
ば、アルミニウム，金あるいは銀等の所望の金属の蒸着
光沢膜が形成される。After the surface of the reflector plate on the uppermost layer of the thus-formed reflector base is polished to a desired flat or curved surface, and is polished to a state where the number of fine scratches is as small as possible during inspection. On the surface of the polished reflecting mirror, a deposited glossy film of a desired metal such as aluminum, gold or silver is formed.
【００１６】[0016]
【作用】本考案の反射鏡基体は、特に、反射鏡面に研磨
において、その表面の微細な傷の検査が容易であり、従
って、その検査をしながら研磨仕上げを効果的に行うこ
とができるので、微細な傷の少ない高い反***度を有
し、しかも操作性の優れた反射鏡が提供される。The reflection mirror substrate of the present invention is particularly easy to inspect for fine scratches on the surface of the reflection mirror surface when it is polished, so that the polishing can be performed effectively while the inspection is being performed. In addition, there is provided a reflecting mirror having high reflection accuracy with less fine scratches and excellent operability.
【００１７】[0017]
【実施例】次に、添付図面により、本考案を更に具体的
に説明する。図１は、本考案の軽量反射鏡基体の一例の
模式的部分拡大断面図である。図において、反射鏡載置
保持台としての軽量シリカガラス発泡体層１の上側にカ
−ボン含有耐熱性シリコ−ンゴムの加熱硬化黒色層２
と、更にその上に高純度珪酸がラス製の無気泡透明反射
鏡板３が積層状に一体化され、図には描かれていない
が、その研磨表面４には、例えば、アルミニウムの金属
光沢膜が蒸着形成される。BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a schematic partial enlarged sectional view of an example of the lightweight reflector base of the present invention. In the figure, a heat-cured black layer 2 of a carbon-containing heat-resistant silicone rubber is provided on a light-weight silica glass foam layer 1 serving as a reflector holder.
Further, a bubble-free transparent reflecting mirror plate 3 made of lath made of high-purity silicic acid is further integrated thereon, and although not shown in the figure, its polished surface 4 has a metallic gloss film of aluminum, for example. Is formed by evaporation.
【００１８】[0018]
【考案の効果】本考案の反射鏡基体は、研磨における表
面の微細な傷の検査が極めて容易で、表面反***度の優
れた反射鏡を提供することができ、更に全重量が軽いの
で大型反射鏡の場合にも優れた操作性が得られる。従っ
て、天体用反射鏡，高エネルギ−ビ−ム等の光学的集光
や天体観測、あるいはその他の宇宙産業用としての利用
価値は極めて高い。The reflecting mirror substrate of the present invention is very easy to inspect for fine scratches on the surface during polishing, and can provide a reflecting mirror with excellent surface reflection accuracy. Excellent operability can be obtained even with a mirror. Therefore, its value for use in optical focusing of astronomical reflectors, high-energy beams, etc., astronomical observation, and other uses in the space industry is extremely high.
【図１】本考案の軽量反射鏡基体の一例の模式的部分拡
大断面図である。FIG. 1 is a schematic partial enlarged cross-sectional view of an example of the lightweight reflector base of the present invention.
１ 軽量シリカガラス発泡体層 ２ 黒色層 ３ 透明反射鏡板 ４ その研磨表面 1 Lightweight silica glass foam layer 2 Black layer 3 Transparent reflector plate 4 Polished surface
Claims (3)
ガラス又は高純度珪酸ガラス製の無気泡透明反射鏡板を
順次積層融着一体化して成る軽量反射鏡基体。1. A lightweight reflector base comprising a silica glass foam layer, a dark color layer, and a bubble-free transparent reflector plate made of quartz glass or high-purity silicate glass, which are sequentially laminated and integrated.
質として含有して成る請求項１に記載の軽量反射鏡基
体。2. The light-weight reflector base according to claim 1, wherein the dark-colored layer contains carbon fine powder as a dark-colored substance.
ガラス発泡体との接着剤に含有される暗色物質によって
形成される請求項１又は２に記載の軽量反射鏡基体。3. The lightweight reflector base according to claim 1, wherein the dark layer is formed of a dark substance contained in an adhesive between the bubble-free reflector plate and the silica glass foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11263591U JP2570160Y2 (en) | 1991-12-26 | 1991-12-26 | Lightweight reflector base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11263591U JP2570160Y2 (en) | 1991-12-26 | 1991-12-26 | Lightweight reflector base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0554519U JPH0554519U (en) | 1993-07-20 |
| JP2570160Y2 true JP2570160Y2 (en) | 1998-05-06 |
Family
ID=14591664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11263591U Expired - Fee Related JP2570160Y2 (en) | 1991-12-26 | 1991-12-26 | Lightweight reflector base |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2570160Y2 (en) |
-
1991
- 1991-12-26 JP JP11263591U patent/JP2570160Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0554519U (en) | 1993-07-20 |
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