JPS57161830A - Optical changeover switch - Google Patents

Optical changeover switch

Info

Publication number
JPS57161830A
JPS57161830A JP4770281A JP4770281A JPS57161830A JP S57161830 A JPS57161830 A JP S57161830A JP 4770281 A JP4770281 A JP 4770281A JP 4770281 A JP4770281 A JP 4770281A JP S57161830 A JPS57161830 A JP S57161830A
Authority
JP
Japan
Prior art keywords
electrodes
comb
tooth
material substrate
those
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
JP4770281A
Other languages
Japanese (ja)
Inventor
Hideto Iwaoka
Sunao Sugiyama
Akira Ote
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP4770281A priority Critical patent/JPS57161830A/en
Publication of JPS57161830A publication Critical patent/JPS57161830A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching

Abstract

PURPOSE:To realize high-speed switching, long life and low-voltage drive by using as a shutter element an electrooptical material substrate which has a couple of comb-tooth transparent electrodes on each surface. CONSTITUTION:On both surfaces of an electrooptical material substrate 131 of PLZT, etc., transparent electrodes 132 and 133, and 134 and 135 are opposed so that their comb-tooth electrodes engage with each other alternately in a certain direction in a manner of W>=d; and the comb-tooth electrodes on one surface are positioned between those on the other. Further, this shutter element is so arranged that an electric field by those electrodes has 45 deg. to the plane of polarization of incident light. Consequently, the light incident to the element is transmitted by being rotated optically by 90 deg., so this element 13 is used in combination with right-angled prisms 11 and 12 and polarizing prisms 9 and 10, thus constituting an optical switch.
JP4770281A 1981-03-31 1981-03-31 Optical changeover switch Pending JPS57161830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4770281A JPS57161830A (en) 1981-03-31 1981-03-31 Optical changeover switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4770281A JPS57161830A (en) 1981-03-31 1981-03-31 Optical changeover switch

Publications (1)

Publication Number Publication Date
JPS57161830A true JPS57161830A (en) 1982-10-05

Family

ID=12782623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4770281A Pending JPS57161830A (en) 1981-03-31 1981-03-31 Optical changeover switch

Country Status (1)

Country Link
JP (1) JPS57161830A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60189732A (en) * 1984-03-09 1985-09-27 Yokogawa Hokushin Electric Corp Optical switch for optical network
JPS62245214A (en) * 1986-04-17 1987-10-26 Nec Corp Polarization control device
US6281953B1 (en) 1998-08-24 2001-08-28 Hyundai Electronics Industries Co., Ltd. Liquid crystal display having high aperture ratio and high transmittance and method of manufacturing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535594A (en) * 1976-07-05 1978-01-19 Seiko Instr & Electronics Ltd Electro-optical display unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535594A (en) * 1976-07-05 1978-01-19 Seiko Instr & Electronics Ltd Electro-optical display unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60189732A (en) * 1984-03-09 1985-09-27 Yokogawa Hokushin Electric Corp Optical switch for optical network
JPS62245214A (en) * 1986-04-17 1987-10-26 Nec Corp Polarization control device
JPH0558529B2 (en) * 1986-04-17 1993-08-26 Nippon Electric Co
US6281953B1 (en) 1998-08-24 2001-08-28 Hyundai Electronics Industries Co., Ltd. Liquid crystal display having high aperture ratio and high transmittance and method of manufacturing the same

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