JPS57204467A - Electric field detecting device - Google Patents

Electric field detecting device

Info

Publication number
JPS57204467A
JPS57204467A JP56090537A JP9053781A JPS57204467A JP S57204467 A JPS57204467 A JP S57204467A JP 56090537 A JP56090537 A JP 56090537A JP 9053781 A JP9053781 A JP 9053781A JP S57204467 A JPS57204467 A JP S57204467A
Authority
JP
Japan
Prior art keywords
electric field
polarized
polarized light
bockels
analyzer
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
JP56090537A
Other languages
Japanese (ja)
Inventor
Tomio Yasuda
Toshiyuki Ichiyama
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP56090537A priority Critical patent/JPS57204467A/en
Priority to KR8202598A priority patent/KR860000389B1/en
Priority to DE8282303031T priority patent/DE3272713D1/en
Priority to EP82303031A priority patent/EP0067683B1/en
Priority to US06/388,477 priority patent/US4510441A/en
Publication of JPS57204467A publication Critical patent/JPS57204467A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/668—Means for obtaining or monitoring the vacuum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/241—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption
    • G01R15/242—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption based on the Pockels effect, i.e. linear electro-optic effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors
    • G01R29/0885—Sensors; antennas; probes; detectors using optical probes, e.g. electro-optical, luminescent, glow discharge, or optical interferometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/12—Measuring electrostatic fields or voltage-potential

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To make the whole device compact, and also to exactly detect magnitude of an electric field, by making a polarized light transmit in the direction Z of a Bockels element formed by a Z-cut quartz. CONSTITUTION:A linear polarized light generated from an He-Ne laser 9 is applied in the direction of Z of a Bockels element 11 which has used a Z-cut quartz, directly or through a 1/4 wavelength plate 12. In the Bockels element 11, the polarized surface of the polarized light is rotated in proportion to magnitude of an electric field E, and subsequently, the polarized light transmits an analyzer 4. The analyzer 4 has a polarized surface having prescribed relation to the polarized surface of the polarized light generated by the laser 9, therefore, the quantity of transmission light of the analyzer 4 is varied in accordance with a rotation angle of the polarized light. This quantity of transmission light is detected by a detecting part, and the electric field E is detected. As a result, a variation due to a temperature of the polarized surface becomes about zero, and magnitude of the electric field is detected exactly.
JP56090537A 1981-06-12 1981-06-12 Electric field detecting device Pending JPS57204467A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56090537A JPS57204467A (en) 1981-06-12 1981-06-12 Electric field detecting device
KR8202598A KR860000389B1 (en) 1981-06-12 1982-06-10 Electric field detection apparatus
DE8282303031T DE3272713D1 (en) 1981-06-12 1982-06-11 Electric field detector
EP82303031A EP0067683B1 (en) 1981-06-12 1982-06-11 Electric field detector
US06/388,477 US4510441A (en) 1981-06-12 1982-06-14 Electric field detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090537A JPS57204467A (en) 1981-06-12 1981-06-12 Electric field detecting device

Publications (1)

Publication Number Publication Date
JPS57204467A true JPS57204467A (en) 1982-12-15

Family

ID=14001159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090537A Pending JPS57204467A (en) 1981-06-12 1981-06-12 Electric field detecting device

Country Status (2)

Country Link
JP (1) JPS57204467A (en)
KR (1) KR860000389B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937626A (en) * 1988-05-06 1990-06-26 Canon Kabushiki Kaisha Image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937626A (en) * 1988-05-06 1990-06-26 Canon Kabushiki Kaisha Image forming apparatus

Also Published As

Publication number Publication date
KR860000389B1 (en) 1986-04-16
KR840000806A (en) 1984-02-27

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