JPS6446243A - Optical pickup device - Google Patents
Optical pickup deviceInfo
- Publication number
- JPS6446243A JPS6446243A JP62202295A JP20229587A JPS6446243A JP S6446243 A JPS6446243 A JP S6446243A JP 62202295 A JP62202295 A JP 62202295A JP 20229587 A JP20229587 A JP 20229587A JP S6446243 A JPS6446243 A JP S6446243A
- Authority
- JP
- Japan
- Prior art keywords
- light beams
- laser light
- recording medium
- photo detecting
- detecting parts
- 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.)
- Granted
Links
Landscapes
- Optical Head (AREA)
Abstract
PURPOSE:To obtain an information reading output and a correct detecting output to detect a focus error, etc., by properly separating reflected laser light beams from a recording medium and the laser light beams toward the recording medium, and making them reach first and second photo detecting parts. CONSTITUTION:First and second photo detecting parts 35 and 36 are formed on a semiconductor substrate 34, and a semiconductor laser element 37 and a reflecting surface part 40 are provided on the semiconductor substrate 34. A beam splitter part 41, etc., which guide laser light beams L2 reflected from a laser element 37 by the reflecting surface part 40 to a recording medium part 44 side and guide laser light beams L2' from the recording medium 44 side through a light path different from that of the laser light beams L2 to the side of the first and second photo detecting parts 35 and 36, are provided. Thus, the reflected laser light beams from the recording medium 44 can be properly guided to the respective first and second photo detecting part 35 and 36, and the proper information reading output, etc., can be obtained from the photo detecting parts 35 and 36.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62202295A JP2590912B2 (en) | 1987-08-13 | 1987-08-13 | Optical pickup device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62202295A JP2590912B2 (en) | 1987-08-13 | 1987-08-13 | Optical pickup device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446243A true JPS6446243A (en) | 1989-02-20 |
JP2590912B2 JP2590912B2 (en) | 1997-03-19 |
Family
ID=16455178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62202295A Expired - Fee Related JP2590912B2 (en) | 1987-08-13 | 1987-08-13 | Optical pickup device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2590912B2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01150244A (en) * | 1987-12-07 | 1989-06-13 | Matsushita Electric Ind Co Ltd | Optical head device |
JPH03189932A (en) * | 1989-12-19 | 1991-08-19 | Matsushita Electric Ind Co Ltd | Optical pickup device |
JPH0461635A (en) * | 1990-06-27 | 1992-02-27 | Nec Corp | Semiconductor element for optical disk |
JPH05144074A (en) * | 1991-11-22 | 1993-06-11 | Sharp Corp | Semiconductor laser device |
US5293038A (en) * | 1992-04-08 | 1994-03-08 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up head apparatus wherein hollographic optical element and photodetector are formed on semiconductor substrate |
WO1995018444A1 (en) * | 1993-12-27 | 1995-07-06 | Sony Corporation | Optical device |
WO1999023645A1 (en) * | 1997-10-31 | 1999-05-14 | Siemens Aktiengesellschaft | Optoelectronic sensor module |
US6185237B1 (en) | 1996-06-24 | 2001-02-06 | Matsushita Electric Industrial Co., Ltd. | Semiconductor laser |
EP0981063A3 (en) * | 1992-07-14 | 2003-09-17 | Seiko Epson Corporation | Polarizer, optical element, and optical head |
JP2017069241A (en) * | 2015-09-28 | 2017-04-06 | 京セラ株式会社 | Semiconductor laser element package and semiconductor laser device |
-
1987
- 1987-08-13 JP JP62202295A patent/JP2590912B2/en not_active Expired - Fee Related
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01150244A (en) * | 1987-12-07 | 1989-06-13 | Matsushita Electric Ind Co Ltd | Optical head device |
JPH03189932A (en) * | 1989-12-19 | 1991-08-19 | Matsushita Electric Ind Co Ltd | Optical pickup device |
JPH0461635A (en) * | 1990-06-27 | 1992-02-27 | Nec Corp | Semiconductor element for optical disk |
JPH05144074A (en) * | 1991-11-22 | 1993-06-11 | Sharp Corp | Semiconductor laser device |
US5293038A (en) * | 1992-04-08 | 1994-03-08 | Matsushita Electric Industrial Co., Ltd. | Optical pick-up head apparatus wherein hollographic optical element and photodetector are formed on semiconductor substrate |
EP0981063A3 (en) * | 1992-07-14 | 2003-09-17 | Seiko Epson Corporation | Polarizer, optical element, and optical head |
WO1995018444A1 (en) * | 1993-12-27 | 1995-07-06 | Sony Corporation | Optical device |
CN1046813C (en) * | 1993-12-27 | 1999-11-24 | 索尼公司 | Optical device |
US6185237B1 (en) | 1996-06-24 | 2001-02-06 | Matsushita Electric Industrial Co., Ltd. | Semiconductor laser |
WO1999023645A1 (en) * | 1997-10-31 | 1999-05-14 | Siemens Aktiengesellschaft | Optoelectronic sensor module |
JP2017069241A (en) * | 2015-09-28 | 2017-04-06 | 京セラ株式会社 | Semiconductor laser element package and semiconductor laser device |
Also Published As
Publication number | Publication date |
---|---|
JP2590912B2 (en) | 1997-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |