JPH0323977B2 - - Google Patents
Info
- Publication number
- JPH0323977B2 JPH0323977B2 JP56152082A JP15208281A JPH0323977B2 JP H0323977 B2 JPH0323977 B2 JP H0323977B2 JP 56152082 A JP56152082 A JP 56152082A JP 15208281 A JP15208281 A JP 15208281A JP H0323977 B2 JPH0323977 B2 JP H0323977B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- photodetector
- track
- light beam
- optical system
- 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 46
- 238000001514 detection method Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15208281A JPS5856235A (ja) | 1981-09-28 | 1981-09-28 | 光学的トラツク追跡装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15208281A JPS5856235A (ja) | 1981-09-28 | 1981-09-28 | 光学的トラツク追跡装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5856235A JPS5856235A (ja) | 1983-04-02 |
JPH0323977B2 true JPH0323977B2 (fr) | 1991-04-02 |
Family
ID=15532655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15208281A Granted JPS5856235A (ja) | 1981-09-28 | 1981-09-28 | 光学的トラツク追跡装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5856235A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0770073B2 (ja) * | 1989-08-04 | 1995-07-31 | 松下電器産業株式会社 | 光学ヘッド |
JPH0366032A (ja) * | 1989-08-04 | 1991-03-20 | Matsushita Electric Ind Co Ltd | 光学ヘッド |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50115546A (fr) * | 1974-02-20 | 1975-09-10 |
-
1981
- 1981-09-28 JP JP15208281A patent/JPS5856235A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50115546A (fr) * | 1974-02-20 | 1975-09-10 |
Also Published As
Publication number | Publication date |
---|---|
JPS5856235A (ja) | 1983-04-02 |
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