JPS5749909A - Optical coupler - Google Patents

Optical coupler

Info

Publication number
JPS5749909A
JPS5749909A JP12553780A JP12553780A JPS5749909A JP S5749909 A JPS5749909 A JP S5749909A JP 12553780 A JP12553780 A JP 12553780A JP 12553780 A JP12553780 A JP 12553780A JP S5749909 A JPS5749909 A JP S5749909A
Authority
JP
Japan
Prior art keywords
optical fiber
focal point
luminous flux
photodetector
reflecting mirror
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
JP12553780A
Other languages
Japanese (ja)
Inventor
Taira Kochiwa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP12553780A priority Critical patent/JPS5749909A/en
Publication of JPS5749909A publication Critical patent/JPS5749909A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4206—Optical features

Abstract

PURPOSE:To improve conversion efficiency by providing a photodetector on an optical axis between an optical fiber and a prescribed rotary elliptic reflecting mirror, and by inputting all luminous flux, emitted from the optical fiber, to the photodetection surface of the photodetector. CONSTITUTION:At the 1st focal point F1 of a rotary elliptic reflecting mirror 13, the light emission surface 10a of an optical fiber 10 is located and in the photodetection surface 12a of a photodetector 12, the 2nd focal point F2 is set. Therefore, luminous flux emitted from the 1st focal point F1 is all focused on the 2nd focal point F2 of the reflecting mirror 13. For this purpose, the light emission surface 10a of the optical fiber 10 is regarded as the 1st focal point, and the photodetection surface 12a of the photodetector 12 which is not on the optical fiber 10 side is regarded as the 2nd focal point. Therefore, the peripheral luminous flux of the emitted luminous flux of the optical fiber 10 is reflected by the reflecting mirror 13 to be focused on the photodetection surface 12a, and the center luminous flux, on the other hand, reaches the photodetection surface 12b directly. Therefore, the emitted luminous flux from the optical fiber 10 reaches the photodetection surface without any loss. This constitution improves the conversion efficiency of the photodetector.
JP12553780A 1980-09-10 1980-09-10 Optical coupler Pending JPS5749909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12553780A JPS5749909A (en) 1980-09-10 1980-09-10 Optical coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12553780A JPS5749909A (en) 1980-09-10 1980-09-10 Optical coupler

Publications (1)

Publication Number Publication Date
JPS5749909A true JPS5749909A (en) 1982-03-24

Family

ID=14912642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12553780A Pending JPS5749909A (en) 1980-09-10 1980-09-10 Optical coupler

Country Status (1)

Country Link
JP (1) JPS5749909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02135307A (en) * 1988-11-16 1990-05-24 Iwasaki Electric Co Ltd Optical transmission link

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02135307A (en) * 1988-11-16 1990-05-24 Iwasaki Electric Co Ltd Optical transmission link

Similar Documents

Publication Publication Date Title
JPS5360651A (en) Semiconductor laser with optical fibers
JPS5390949A (en) Scanner
MY111300A (en) Optical device.
AU5073501A (en) Gas cell
JPS5617305A (en) Light branching coupler
JPS57195209A (en) Optical coupler
JPH01200209A (en) Sunlight gathering device
JPS5749909A (en) Optical coupler
JPS5669607A (en) Photocoupler
JPS57158823A (en) Method for incidence of light to tapered fiber
JPS5669882A (en) Semiconductor luminous device
JPS56144411A (en) Collimating optical system
JPS56163533A (en) Optical recorder and reproducer
CA2419287A1 (en) Scanner with waveguide for scanning paper currency
JPS578407A (en) Reflector
JPS57212409A (en) Coupler of laser diode and optical fiber
JPS52140348A (en) Optical device for photo-processing
JPS5735824A (en) Light beam scanner
JPS5569104A (en) Spot size converting device of parallel luminous flux
JPS57155524A (en) Optical coupling system
JPS56119111A (en) Collimator
JPS5744831A (en) Device for exciting multiple core optical fiber
JPS5690642A (en) Optical communication system
JPS5470002A (en) Optical information reader
JPS57190904A (en) Optical waveguide device