JPH0531691Y2 - - Google Patents
Info
- Publication number
- JPH0531691Y2 JPH0531691Y2 JP8527087U JP8527087U JPH0531691Y2 JP H0531691 Y2 JPH0531691 Y2 JP H0531691Y2 JP 8527087 U JP8527087 U JP 8527087U JP 8527087 U JP8527087 U JP 8527087U JP H0531691 Y2 JPH0531691 Y2 JP H0531691Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- guide member
- optical recording
- light
- detection window
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 64
- 238000001514 detection method Methods 0.000 claims description 28
- 239000000428 dust Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8527087U JPH0531691Y2 (de) | 1987-05-30 | 1987-05-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8527087U JPH0531691Y2 (de) | 1987-05-30 | 1987-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63195614U JPS63195614U (de) | 1988-12-16 |
JPH0531691Y2 true JPH0531691Y2 (de) | 1993-08-16 |
Family
ID=30940525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8527087U Expired - Lifetime JPH0531691Y2 (de) | 1987-05-30 | 1987-05-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0531691Y2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2581198Y2 (ja) * | 1989-04-10 | 1998-09-21 | 株式会社 トーキン | 磁気式カードリーダー |
-
1987
- 1987-05-30 JP JP8527087U patent/JPH0531691Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS63195614U (de) | 1988-12-16 |
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