JPH0519852Y2 - - Google Patents
Info
- Publication number
- JPH0519852Y2 JPH0519852Y2 JP7487685U JP7487685U JPH0519852Y2 JP H0519852 Y2 JPH0519852 Y2 JP H0519852Y2 JP 7487685 U JP7487685 U JP 7487685U JP 7487685 U JP7487685 U JP 7487685U JP H0519852 Y2 JPH0519852 Y2 JP H0519852Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- order diffracted
- receiving element
- diffraction
- disk
- 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 29
- 201000009310 astigmatism Diseases 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000004075 alteration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7487685U JPH0519852Y2 (ko) | 1985-05-20 | 1985-05-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7487685U JPH0519852Y2 (ko) | 1985-05-20 | 1985-05-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61189416U JPS61189416U (ko) | 1986-11-26 |
JPH0519852Y2 true JPH0519852Y2 (ko) | 1993-05-25 |
Family
ID=30615574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7487685U Expired - Lifetime JPH0519852Y2 (ko) | 1985-05-20 | 1985-05-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0519852Y2 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2766348B2 (ja) * | 1989-11-02 | 1998-06-18 | オリンパス光学工業株式会社 | 光学ヘッド |
-
1985
- 1985-05-20 JP JP7487685U patent/JPH0519852Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS61189416U (ko) | 1986-11-26 |
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