JPS54155063A - Photo-variable attenuator - Google Patents

Photo-variable attenuator

Info

Publication number
JPS54155063A
JPS54155063A JP6325378A JP6325378A JPS54155063A JP S54155063 A JPS54155063 A JP S54155063A JP 6325378 A JP6325378 A JP 6325378A JP 6325378 A JP6325378 A JP 6325378A JP S54155063 A JPS54155063 A JP S54155063A
Authority
JP
Japan
Prior art keywords
electrodes
lights
liquid crystal
attenuation
voltage
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
JP6325378A
Other languages
Japanese (ja)
Inventor
Koichi Asatani
Kiyoshi Nosu
Kunio Hashimoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6325378A priority Critical patent/JPS54155063A/en
Publication of JPS54155063A publication Critical patent/JPS54155063A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To adjust the quantities of lights, which are formed when lights vertically projected to transparent electrodes holding a liquid crystal permeate the liquid crystal, by low drive voltage by stabilizing said quantities of lights, and to miniaturize this device, by adjusting said electrodes by applying voltage to said electrodes.
CONSTITUTION: A liquid crystal 4 is enclosed between transparent electrodes 3, photo-fibers 2 are mounted at right angles to the electrodes 3 and lights are projected. When voltage is not applied to the electrodes 3, the liquid crystal is transparent and the quantity of attenuation is minimum, but the quantity of attenuation increases with the rise of applied voltage. Since there is the correspondence of 1 to 1 between applied voltage and the quantity of attenuation, the quantity of attenuation can be controlled by adjusting applied voltage.
COPYRIGHT: (C)1979,JPO&Japio
JP6325378A 1978-05-29 1978-05-29 Photo-variable attenuator Pending JPS54155063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6325378A JPS54155063A (en) 1978-05-29 1978-05-29 Photo-variable attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6325378A JPS54155063A (en) 1978-05-29 1978-05-29 Photo-variable attenuator

Publications (1)

Publication Number Publication Date
JPS54155063A true JPS54155063A (en) 1979-12-06

Family

ID=13223896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6325378A Pending JPS54155063A (en) 1978-05-29 1978-05-29 Photo-variable attenuator

Country Status (1)

Country Link
JP (1) JPS54155063A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58192017A (en) * 1982-05-06 1983-11-09 Nippon Telegr & Teleph Corp <Ntt> Optical switch
JPH0564825U (en) * 1992-02-03 1993-08-27 株式会社アドバンテスト Optical sensor with optical chopper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58192017A (en) * 1982-05-06 1983-11-09 Nippon Telegr & Teleph Corp <Ntt> Optical switch
JPH0564825U (en) * 1992-02-03 1993-08-27 株式会社アドバンテスト Optical sensor with optical chopper

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