JPS56147106A - Light variable attenuator - Google Patents

Light variable attenuator

Info

Publication number
JPS56147106A
JPS56147106A JP5032680A JP5032680A JPS56147106A JP S56147106 A JPS56147106 A JP S56147106A JP 5032680 A JP5032680 A JP 5032680A JP 5032680 A JP5032680 A JP 5032680A JP S56147106 A JPS56147106 A JP S56147106A
Authority
JP
Japan
Prior art keywords
disc
variable attenuating
optical fiber
continuous variable
diameter
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
JP5032680A
Other languages
Japanese (ja)
Inventor
Hatsuo Takesawa
Makoto Ohashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5032680A priority Critical patent/JPS56147106A/en
Publication of JPS56147106A publication Critical patent/JPS56147106A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To shorten the light path length to reduce the insertion loss, by transmitting the optical signal from the input optical fiber to the output optical fiber through a continuous variable attenuating plate, an aperture part, a reflection mechanism, and a step variable attenuating plate. CONSTITUTION:Input light beam 33 from input lens 32 provided in the end part of input optical fiber 31 passes through small-diameter continuous variable attenuating disc 34 and is incident to the slope of, for example, equilateral right-angled prism 39 through aperture part 351 of large-diameter disc 35 which has the same axis as this small-diameter continuous variable attenuating disc 34 and has aperture part 351 provided along the circumference of attenuating disc 34 in the part facing to continuous variable attenuating disc 34 and has plural (8 in the figure) step variable attenuating plates 352 in the outside circumferential part which does not face to continuous variable attenuating disc 34, and this incident light beam is reflected totally twice in this prism 39 and passes step variable attenuating plates 352 of large-diameter disc 35 and becomes output light beam 36 and is transmitted to output optical fiber 38 through output lens 37.
JP5032680A 1980-04-18 1980-04-18 Light variable attenuator Pending JPS56147106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5032680A JPS56147106A (en) 1980-04-18 1980-04-18 Light variable attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5032680A JPS56147106A (en) 1980-04-18 1980-04-18 Light variable attenuator

Publications (1)

Publication Number Publication Date
JPS56147106A true JPS56147106A (en) 1981-11-14

Family

ID=12855775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5032680A Pending JPS56147106A (en) 1980-04-18 1980-04-18 Light variable attenuator

Country Status (1)

Country Link
JP (1) JPS56147106A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591231A (en) * 1982-06-26 1986-05-27 International Standard Electric Corporation Variable optical attenuator
US4702549A (en) * 1984-08-16 1987-10-27 Duck Gary S Reciprocating variable optical attenuator filter
US5225942A (en) * 1991-02-25 1993-07-06 Ando Electric Co., Ltd. Optical signal band-pass filter module
JP2009505135A (en) * 2005-08-09 2009-02-05 ザ・ボーイング・カンパニー System and method for distributing a signal transmitted to an optical fiber transmission line
JP2012253299A (en) * 2011-06-07 2012-12-20 Disco Abrasive Syst Ltd Process device
JP2012253296A (en) * 2011-06-07 2012-12-20 Disco Abrasive Syst Ltd Process device
CN107918119A (en) * 2017-10-23 2018-04-17 孝感华中精密仪器有限公司 A kind of laser avoidance device sensitivity test system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591231A (en) * 1982-06-26 1986-05-27 International Standard Electric Corporation Variable optical attenuator
US4702549A (en) * 1984-08-16 1987-10-27 Duck Gary S Reciprocating variable optical attenuator filter
US5225942A (en) * 1991-02-25 1993-07-06 Ando Electric Co., Ltd. Optical signal band-pass filter module
JP2009505135A (en) * 2005-08-09 2009-02-05 ザ・ボーイング・カンパニー System and method for distributing a signal transmitted to an optical fiber transmission line
EP1920279B1 (en) * 2005-08-09 2013-05-22 The Boeing Company Systems and methods for distributing signals communicated on fiber optic transmission lines
JP2012253299A (en) * 2011-06-07 2012-12-20 Disco Abrasive Syst Ltd Process device
JP2012253296A (en) * 2011-06-07 2012-12-20 Disco Abrasive Syst Ltd Process device
CN107918119A (en) * 2017-10-23 2018-04-17 孝感华中精密仪器有限公司 A kind of laser avoidance device sensitivity test system
CN107918119B (en) * 2017-10-23 2020-04-28 孝感华中精密仪器有限公司 Sensitivity testing system for laser alarm

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