JPS5420750A - Photo coupler - Google Patents

Photo coupler

Info

Publication number
JPS5420750A
JPS5420750A JP8477977A JP8477977A JPS5420750A JP S5420750 A JPS5420750 A JP S5420750A JP 8477977 A JP8477977 A JP 8477977A JP 8477977 A JP8477977 A JP 8477977A JP S5420750 A JPS5420750 A JP S5420750A
Authority
JP
Japan
Prior art keywords
reduce
photo coupler
lens
prisms
depositing
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
Application number
JP8477977A
Other languages
Japanese (ja)
Inventor
Seiji Terai
Shinya Okuda
Shoichi Kurita
Keiji Tanaka
Fumio Mita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8477977A priority Critical patent/JPS5420750A/en
Publication of JPS5420750A publication Critical patent/JPS5420750A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the number of parts and reduce the reflection loss on lens faces by using semispherical lens having a focus near their plane part as optical focusing devices and performing splitting of light beam by depositing a partly transparent reflecting film on the cemented face of two prisms.
COPYRIGHT: (C)1979,JPO&Japio
JP8477977A 1977-07-15 1977-07-15 Photo coupler Pending JPS5420750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8477977A JPS5420750A (en) 1977-07-15 1977-07-15 Photo coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8477977A JPS5420750A (en) 1977-07-15 1977-07-15 Photo coupler

Publications (1)

Publication Number Publication Date
JPS5420750A true JPS5420750A (en) 1979-02-16

Family

ID=13840164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8477977A Pending JPS5420750A (en) 1977-07-15 1977-07-15 Photo coupler

Country Status (1)

Country Link
JP (1) JPS5420750A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157703A (en) * 1979-05-23 1980-12-08 Siemens Ag Light branching element
JPS5818202U (en) * 1981-07-30 1983-02-04 富士通株式会社 optical circuit unit
JPS58202423A (en) * 1982-05-20 1983-11-25 Fujitsu Ltd Multi-photocoupler
US4456329A (en) * 1979-10-12 1984-06-26 Westinghouse Electric Corp. Optical device having multiple wavelength dependent optical paths
JPS6051805A (en) * 1983-08-31 1985-03-23 Seiko Instr & Electronics Ltd Optical branching device
CN110475164A (en) * 2018-05-09 2019-11-19 北京吉视汇通科技有限责任公司 Optical splitter and single fiber bi-directional passive light network transmission system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271250A (en) * 1975-12-09 1977-06-14 Philips Nv Optical coupler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271250A (en) * 1975-12-09 1977-06-14 Philips Nv Optical coupler

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157703A (en) * 1979-05-23 1980-12-08 Siemens Ag Light branching element
JPH0226204B2 (en) * 1979-05-23 1990-06-08 Siemens Ag
US4456329A (en) * 1979-10-12 1984-06-26 Westinghouse Electric Corp. Optical device having multiple wavelength dependent optical paths
JPS5818202U (en) * 1981-07-30 1983-02-04 富士通株式会社 optical circuit unit
JPS58202423A (en) * 1982-05-20 1983-11-25 Fujitsu Ltd Multi-photocoupler
JPS6051805A (en) * 1983-08-31 1985-03-23 Seiko Instr & Electronics Ltd Optical branching device
CN110475164A (en) * 2018-05-09 2019-11-19 北京吉视汇通科技有限责任公司 Optical splitter and single fiber bi-directional passive light network transmission system
CN110475164B (en) * 2018-05-09 2021-11-16 北京吉视汇通科技有限责任公司 Optical splitter and single-fiber bidirectional passive optical network transmission system

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