JPS5556672A - Light-coupled semiconductor device - Google Patents
Light-coupled semiconductor deviceInfo
- Publication number
- JPS5556672A JPS5556672A JP12844378A JP12844378A JPS5556672A JP S5556672 A JPS5556672 A JP S5556672A JP 12844378 A JP12844378 A JP 12844378A JP 12844378 A JP12844378 A JP 12844378A JP S5556672 A JPS5556672 A JP S5556672A
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting device
- screening plate
- window
- darkened
- 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
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
PURPOSE: To prevent erroneous operation by providing a light-screening plate, which is made of photochromic material, between a light-emitting device and a photodetector, and providing a light-passing window a part of which is not darkened but transparent.
CONSTITUTION: A photodetector 2 having a light-receiving portion 21, which opposes an infrared light-emitting device 1 whose main component is GaAs, is provided, with a light-screening plate 3 being intervened. Glass containing silver halide is used for the light-screening plate as a photocromic material. The portion 300 is preliminary illuminated and darkened by the light whose wavelength is shorter than that of the emitted light from the light-emitting device, and the emitted light from the light-emitting device is not permitted to pass through. The portion 301 is not darkened and permits the emitted light to pass. Since the light-screening plate is made to opaque to its inner portion, with a light-passing window 4 being remained by the simple process of selectively emitting the shorter-wavelength light, the light does not leak out of the portion 301, and the stray light can completely prevented. Furthermore, the accuracy in forming the window is high, and the window with a small area can be formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53128443A JPS6033317B2 (en) | 1978-10-20 | 1978-10-20 | Optical coupling semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53128443A JPS6033317B2 (en) | 1978-10-20 | 1978-10-20 | Optical coupling semiconductor device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5556672A true JPS5556672A (en) | 1980-04-25 |
JPS6033317B2 JPS6033317B2 (en) | 1985-08-02 |
Family
ID=14984845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53128443A Expired JPS6033317B2 (en) | 1978-10-20 | 1978-10-20 | Optical coupling semiconductor device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6033317B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5200631A (en) * | 1991-08-06 | 1993-04-06 | International Business Machines Corporation | High speed optical interconnect |
JP4727652B2 (en) * | 2005-02-21 | 2011-07-20 | 英隆 ▲徳▼間 | Underwater training and rehabilitation equipment |
-
1978
- 1978-10-20 JP JP53128443A patent/JPS6033317B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5200631A (en) * | 1991-08-06 | 1993-04-06 | International Business Machines Corporation | High speed optical interconnect |
JP4727652B2 (en) * | 2005-02-21 | 2011-07-20 | 英隆 ▲徳▼間 | Underwater training and rehabilitation equipment |
US8066623B2 (en) | 2005-02-21 | 2011-11-29 | Hidetaka Tokuma | In-water training and rehabilitation device |
Also Published As
Publication number | Publication date |
---|---|
JPS6033317B2 (en) | 1985-08-02 |
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