JPS5556672A - Light-coupled semiconductor device - Google Patents

Light-coupled semiconductor device

Info

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
Application number
JP12844378A
Other languages
Japanese (ja)
Other versions
JPS6033317B2 (en
Inventor
Tadahiko Mitsuyoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53128443A priority Critical patent/JPS6033317B2/en
Publication of JPS5556672A publication Critical patent/JPS5556672A/en
Publication of JPS6033317B2 publication Critical patent/JPS6033317B2/en
Expired legal-status Critical Current

Links

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
JP53128443A 1978-10-20 1978-10-20 Optical coupling semiconductor device Expired JPS6033317B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
JPS57173256A (en) Image sensor
JPS5556672A (en) Light-coupled semiconductor device
JPS5457983A (en) Optical semiconductor device
JPS5498188A (en) Photocuopler
JPS54134992A (en) Semiconductor device
JPS5437794A (en) Infrared ray detector
JPS57172254A (en) Speed measuring device
JPS52154397A (en) Laser device with radiation positioning mechanism
JPS5556676A (en) Manufacture of semiconductor light-emitting device
JPS5317351A (en) Optical filter
JPS5752829A (en) Optical sensor
JPS5210169A (en) Liquid surface detector
JPS528725A (en) Information input device
JPS57103081A (en) Parts detector
CH608326B (en) WATCH GLASS, METHOD OF MANUFACTURING THE SAME.
JPS5292531A (en) Photo fiber connector centering device
JPS54121787A (en) Photo detector
JPS5299842A (en) Measurement of wavelength dispersion
JPS5412284A (en) Photo coupled semiconductor device
JPS5330888A (en) Photo detector
JPS5793586A (en) Photocoupling interrupter
JPS5223357A (en) Semiconductor photomodulator
JPS5630238A (en) Fluorescent screen device
JPS52142424A (en) Light pen
JPS5443033A (en) Paper detecting method