JPS6426704U - - Google Patents

Info

Publication number
JPS6426704U
JPS6426704U JP12050687U JP12050687U JPS6426704U JP S6426704 U JPS6426704 U JP S6426704U JP 12050687 U JP12050687 U JP 12050687U JP 12050687 U JP12050687 U JP 12050687U JP S6426704 U JPS6426704 U JP S6426704U
Authority
JP
Japan
Prior art keywords
block
reflective surface
optical member
protective film
light
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
Application number
JP12050687U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12050687U priority Critical patent/JPS6426704U/ja
Publication of JPS6426704U publication Critical patent/JPS6426704U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Elements Other Than Lenses (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Description

【図面の簡単な説明】
第１図ＡおよびＢはこの考案の一実施例を示す
平面図および正面図、第２図ＡおよびＢはこの考
案に係る光学部材を用いる光学式情報記録および
／または再生装置の光ピツクアツプの構成を示す
平面図および正面図、第３図は第２図Ａに示すデ
イテクタの構成および信号処理回路の構成を示す
図である。 １……光学部材、２……ブロツク、３……反射
面、４……保護膜、５……光束、６……汚れ、１
０……反射プリズム、１１……ブロツク、１２…
…反射面、１３……保護膜。

Claims (1)

    【実用新案登録請求の範囲】
  1. 光透過性のブロツクの少なくとも一面を反射面
    とし、光束をブロツク内に入射させて該反射面で
    反射させるようにした光学部材において、前記反
    射面としたブロツク表面に保護膜を設けたことを
    特徴とする光学部材。
JP12050687U 1987-08-07 1987-08-07 Pending JPS6426704U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12050687U JPS6426704U (ja) 1987-08-07 1987-08-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12050687U JPS6426704U (ja) 1987-08-07 1987-08-07

Publications (1)

Publication Number Publication Date
JPS6426704U true JPS6426704U (ja) 1989-02-15

Family

ID=31366676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12050687U Pending JPS6426704U (ja) 1987-08-07 1987-08-07

Country Status (1)

Country Link
JP (1) JPS6426704U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10101666B2 (en) 2007-10-12 2018-10-16 Nikon Corporation Illumination optical apparatus, exposure apparatus, and device manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10101666B2 (en) 2007-10-12 2018-10-16 Nikon Corporation Illumination optical apparatus, exposure apparatus, and device manufacturing method

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