JPS6427288A - Semiconductor device - Google Patents
Semiconductor deviceInfo
- Publication number
- JPS6427288A JPS6427288A JP62184362A JP18436287A JPS6427288A JP S6427288 A JPS6427288 A JP S6427288A JP 62184362 A JP62184362 A JP 62184362A JP 18436287 A JP18436287 A JP 18436287A JP S6427288 A JPS6427288 A JP S6427288A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- semiconductor
- photodetector
- laser element
- servo
- 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
- Optical Head (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To prevent turbulence in focus error signals, by providing a light shielding body between a servo photodetector and a semiconductor laser element so that laser light from the semiconductor laser element is not directly incident on the servo photodetector. CONSTITUTION:A semiconductor device comprises, for example, a semiconductor substrate 1, a semiconductor laser element 2 bonded on the semiconductor substrate 1, a monitoring photodetector 3 formed on the substrate 1, a servo photodetector 4 formed on the substrate 1 and a light shielding plate 30 provided on the substrate 1 region located between the monitoring and servo photodetectors 3 and 4. Thus, the light shielding body is provided on the semiconductor substrate between the semiconductor laser element and the photodetector receiving light from the outside. In this manner, it is possible to obtain a semiconductor device causing no turbulence in focus error signals when an optical pickup is produced therefrom.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184362A JPS6427288A (en) | 1987-07-22 | 1987-07-22 | Semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184362A JPS6427288A (en) | 1987-07-22 | 1987-07-22 | Semiconductor device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6427288A true JPS6427288A (en) | 1989-01-30 |
Family
ID=16151909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62184362A Pending JPS6427288A (en) | 1987-07-22 | 1987-07-22 | Semiconductor device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6427288A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7075960B2 (en) | 2003-01-10 | 2006-07-11 | Matsushita Electric Industrial Co., Ltd. | Semiconductor laser apparatus and production method thereof |
US7483467B2 (en) | 2005-09-13 | 2009-01-27 | Panasonic Corporation | Semiconductor laser unit and method for manufacturing optical reflection film |
-
1987
- 1987-07-22 JP JP62184362A patent/JPS6427288A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7075960B2 (en) | 2003-01-10 | 2006-07-11 | Matsushita Electric Industrial Co., Ltd. | Semiconductor laser apparatus and production method thereof |
US7483467B2 (en) | 2005-09-13 | 2009-01-27 | Panasonic Corporation | Semiconductor laser unit and method for manufacturing optical reflection film |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0258450A4 (en) | Device for detecting focus. | |
EP0386581A3 (en) | Device for optically detecting hold position of electronic component | |
JPS6428882A (en) | Photoelectronic device, manufacture thereof, and lead frame used in same manufacture | |
EP0273295A3 (en) | Optical pick-up apparatus | |
KR0121313Y1 (en) | Optical pick-up device | |
JPS6446243A (en) | Optical pickup device | |
JPS6427288A (en) | Semiconductor device | |
JPS6427286A (en) | Semiconductor device | |
JPS6430034A (en) | Semiconductor laser driver | |
JPS6427289A (en) | Semiconductor device | |
JPS6464283A (en) | Optical integrated circuit device | |
JPS62173650A (en) | Optical information reproducing device | |
JPS5668937A (en) | Optical disk reproducing device | |
JPS5470004A (en) | Optical information reader | |
JPS5744235A (en) | Optical information recorder and reproducer | |
JPS5745270A (en) | Semiconductor device | |
JPS57186854A (en) | Optical transmitting device | |
JPS63102272A (en) | Optical semiconductor device | |
JPS57121285A (en) | Light coupling device | |
JPS6467726A (en) | Optical pick-up | |
JPS56117340A (en) | Optical data reading and writing device | |
JPS6427045A (en) | Semiconductor device | |
JPS6472336A (en) | Optical pickup device | |
JPS61240219A (en) | Dust-proof sensor | |
JPS6489042A (en) | Focus error detector |