JPS6479944A - Optical pickup device - Google Patents
Optical pickup deviceInfo
- Publication number
- JPS6479944A JPS6479944A JP62236320A JP23632087A JPS6479944A JP S6479944 A JPS6479944 A JP S6479944A JP 62236320 A JP62236320 A JP 62236320A JP 23632087 A JP23632087 A JP 23632087A JP S6479944 A JPS6479944 A JP S6479944A
- Authority
- JP
- Japan
- Prior art keywords
- face
- lens
- light
- light flux
- made incident
- 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
Landscapes
- Lenses (AREA)
- Optical Head (AREA)
Abstract
PURPOSE:To integrally form the first face, the reflecting face and the second face of an optical element by an optically uniform material, to improve the accuracy of a position setting and to attain a compact and light device by setting the optical element of an optical pickup device to the arrangement of an information recording carrier, a light flux separating means, a light source and a photodetector. CONSTITUTION:A light flux outgoing from a semiconductor laser 17 is made a parallel light by a collimator lens 18, passed through a beam splitter 19 and made incident on an objective lens 20 constituted of an aspherical surface. The light flux made incident from the first face 20a of the lens 20 is converged and reflected by the reflecting face 20b of an internal face, emitted from the second face 20c of the sprung lens 20 to form a light spot on an information recording face 23 on a disk 22. Further, the light flux outgoing on the recording face 23 is reflected by the splitter 19 through the lens 20, converged by a sensor lens 24, a cylindrical lens 25 to made incident to a photodetector 26 and to attain the compact and light device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62236320A JPS6479944A (en) | 1987-09-22 | 1987-09-22 | Optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62236320A JPS6479944A (en) | 1987-09-22 | 1987-09-22 | Optical pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6479944A true JPS6479944A (en) | 1989-03-24 |
Family
ID=16999053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62236320A Pending JPS6479944A (en) | 1987-09-22 | 1987-09-22 | Optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6479944A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09190640A (en) * | 1995-12-28 | 1997-07-22 | Lg Electron Inc | Optical pickup device |
| WO2005088622A1 (en) * | 2004-03-04 | 2005-09-22 | Arima Devices Corporation | Combined folding mirror and collimator lens for an optical pickup unit. |
| JP2008130116A (en) * | 2006-11-17 | 2008-06-05 | Pentax Corp | Optical pickup optical system |
-
1987
- 1987-09-22 JP JP62236320A patent/JPS6479944A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09190640A (en) * | 1995-12-28 | 1997-07-22 | Lg Electron Inc | Optical pickup device |
| WO2005088622A1 (en) * | 2004-03-04 | 2005-09-22 | Arima Devices Corporation | Combined folding mirror and collimator lens for an optical pickup unit. |
| JP2008130116A (en) * | 2006-11-17 | 2008-06-05 | Pentax Corp | Optical pickup optical system |
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