JPS6213231Y2 - - Google Patents
Info
- Publication number
- JPS6213231Y2 JPS6213231Y2 JP9414081U JP9414081U JPS6213231Y2 JP S6213231 Y2 JPS6213231 Y2 JP S6213231Y2 JP 9414081 U JP9414081 U JP 9414081U JP 9414081 U JP9414081 U JP 9414081U JP S6213231 Y2 JPS6213231 Y2 JP S6213231Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- optical
- collimator lens
- beam splitter
- lens
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 16
- 201000009310 astigmatism Diseases 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9414081U JPS582733U (ja) | 1981-06-24 | 1981-06-24 | 光学式情報読み取り装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9414081U JPS582733U (ja) | 1981-06-24 | 1981-06-24 | 光学式情報読み取り装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS582733U JPS582733U (ja) | 1983-01-08 |
| JPS6213231Y2 true JPS6213231Y2 (en]) | 1987-04-06 |
Family
ID=29889077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9414081U Granted JPS582733U (ja) | 1981-06-24 | 1981-06-24 | 光学式情報読み取り装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS582733U (en]) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6381001U (en]) * | 1986-11-17 | 1988-05-28 | ||
| US4958245A (en) * | 1988-04-07 | 1990-09-18 | Insite Peripherals, Inc. | Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities |
-
1981
- 1981-06-24 JP JP9414081U patent/JPS582733U/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS582733U (ja) | 1983-01-08 |
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