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
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Surface Treatment Of Optical Elements (AREA)
Description
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。
1A and 1B are a plan view and a front view showing an embodiment of this invention, and FIGS. 2A and 2B are configurations of an optical pickup of an optical information recording and/or reproducing apparatus using an optical member according to this invention. FIG. 3 is a diagram showing the structure of the detector and the structure of the signal processing circuit shown in FIG. 2A. 1... Optical member, 2... Block, 3... Reflective surface, 4... Protective film, 5... Luminous flux, 6... Dirt, 1
0...Reflection prism, 11...Block, 12...
... Reflective surface, 13... Protective film.
Claims (1)
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。 An optical member in which at least one surface of a light-transmissive block is a reflective surface, and a light beam is incident on the block and reflected by the reflective surface, characterized in that a protective film is provided on the surface of the block that is the reflective surface. An optical member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12050687U JPS6426704U (en) | 1987-08-07 | 1987-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12050687U JPS6426704U (en) | 1987-08-07 | 1987-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6426704U true JPS6426704U (en) | 1989-02-15 |
Family
ID=31366676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12050687U Pending JPS6426704U (en) | 1987-08-07 | 1987-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6426704U (en) |
Cited By (1)
| 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 |
-
1987
- 1987-08-07 JP JP12050687U patent/JPS6426704U/ja active Pending
Cited By (1)
| 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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