JPS55106405A - Optical path signal generating apparatus - Google Patents

Optical path signal generating apparatus

Info

Publication number
JPS55106405A
JPS55106405A JP1391979A JP1391979A JPS55106405A JP S55106405 A JPS55106405 A JP S55106405A JP 1391979 A JP1391979 A JP 1391979A JP 1391979 A JP1391979 A JP 1391979A JP S55106405 A JPS55106405 A JP S55106405A
Authority
JP
Japan
Prior art keywords
optical path
explosion
division
emitting device
light emitting
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
JP1391979A
Other languages
Japanese (ja)
Inventor
Masatsugu Ogata
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1391979A priority Critical patent/JPS55106405A/en
Publication of JPS55106405A publication Critical patent/JPS55106405A/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
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/351—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements
    • G02B6/353—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being a shutter, baffle, beam dump or opaque element
    • 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
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
    • G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
    • G02B6/3548—1xN switch, i.e. one input and a selectable single output of N possible outputs
    • G02B6/3552—1x1 switch, e.g. on/off switch

Abstract

PURPOSE:To obtain an optical path signal generating apparatus having explosion- proof safety, by forming transmission optical path and reception optical path between light emitting device and photo detector provided in the signal processing part of the first division, and optically switching the optical path in the second division. CONSTITUTION:A light emitting device 22 and a photo detector 23 are provided in a signal processing part 21 to convert the optical pulse into electric signal, and a circuit to count the number of pulses thereof is built in. The light emitting device 22 and photo detector 23 are made to correspond to each one end of an optical fiber 24 forming a transmission optical path and an optical fiber 25 forming a reception optical path. The optical fibers 24, 25 are led into explosion-proof division, with the ends thereof being faced to the site 26 to detect the opening degree of a valve. A disc 27 with slit is provided on a valve shaft 29 to count the ON/OFF switching of light, so that the valve opening degree may be distinguished. There is no risk in explosion-proof countermeasures, and the constitution may be simplified.
JP1391979A 1979-02-09 1979-02-09 Optical path signal generating apparatus Pending JPS55106405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1391979A JPS55106405A (en) 1979-02-09 1979-02-09 Optical path signal generating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1391979A JPS55106405A (en) 1979-02-09 1979-02-09 Optical path signal generating apparatus

Publications (1)

Publication Number Publication Date
JPS55106405A true JPS55106405A (en) 1980-08-15

Family

ID=11846571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1391979A Pending JPS55106405A (en) 1979-02-09 1979-02-09 Optical path signal generating apparatus

Country Status (1)

Country Link
JP (1) JPS55106405A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893919U (en) * 1981-12-17 1983-06-25 旭光学工業株式会社 Aperture value information generator for automatic aperture control cameras
JPS5893821U (en) * 1981-12-21 1983-06-25 昭和電線電纜株式会社 water level gauge
JPS59120416U (en) * 1983-02-02 1984-08-14 アルプス電気株式会社 rotary encoder
JPS59175117U (en) * 1983-05-10 1984-11-22 鈴木無線電機株式会社 Optical cable coupling optical code plate
JPS6037813U (en) * 1983-08-22 1985-03-15 昭和電線電纜株式会社 optical rotary sensor
JPS6095514U (en) * 1983-12-08 1985-06-29 光洋電子工業株式会社 rotary encoder device
WO1985004710A1 (en) * 1984-04-14 1985-10-24 Fanuc Ltd Optical rotary encoder
US4626065A (en) * 1981-12-03 1986-12-02 Kei Mori Light conduction apparatus utilizing intermittent illumination applied to optical fibers for photosynthetic reaction
JPS6262917U (en) * 1985-10-11 1987-04-18
JPS6267215U (en) * 1985-10-16 1987-04-27
JPS62244202A (en) * 1986-04-14 1987-10-24 Hitachi Ltd Controller for train
JPS631386U (en) * 1986-06-20 1988-01-07

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626065A (en) * 1981-12-03 1986-12-02 Kei Mori Light conduction apparatus utilizing intermittent illumination applied to optical fibers for photosynthetic reaction
JPS5893919U (en) * 1981-12-17 1983-06-25 旭光学工業株式会社 Aperture value information generator for automatic aperture control cameras
JPS5893821U (en) * 1981-12-21 1983-06-25 昭和電線電纜株式会社 water level gauge
JPS59120416U (en) * 1983-02-02 1984-08-14 アルプス電気株式会社 rotary encoder
JPS59175117U (en) * 1983-05-10 1984-11-22 鈴木無線電機株式会社 Optical cable coupling optical code plate
JPS6037813U (en) * 1983-08-22 1985-03-15 昭和電線電纜株式会社 optical rotary sensor
JPS6095514U (en) * 1983-12-08 1985-06-29 光洋電子工業株式会社 rotary encoder device
WO1985004710A1 (en) * 1984-04-14 1985-10-24 Fanuc Ltd Optical rotary encoder
JPS6262917U (en) * 1985-10-11 1987-04-18
JPS6267215U (en) * 1985-10-16 1987-04-27
JPS62244202A (en) * 1986-04-14 1987-10-24 Hitachi Ltd Controller for train
JPS631386U (en) * 1986-06-20 1988-01-07

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