JPS5655811A - Sensor - Google Patents

Sensor

Info

Publication number
JPS5655811A
JPS5655811A JP13263379A JP13263379A JPS5655811A JP S5655811 A JPS5655811 A JP S5655811A JP 13263379 A JP13263379 A JP 13263379A JP 13263379 A JP13263379 A JP 13263379A JP S5655811 A JPS5655811 A JP S5655811A
Authority
JP
Japan
Prior art keywords
light
magnetic field
magnet
parallel
faraday
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
JP13263379A
Other languages
Japanese (ja)
Inventor
Teruhito Matsui
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 Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13263379A priority Critical patent/JPS5655811A/en
Publication of JPS5655811A publication Critical patent/JPS5655811A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain a highly reliable sensor which is strong against electric noises and can be monitored even from a remote place by a simple constitution wherein a magnet impressing a magnetic field on a Faraday-effect element is arranged to be movable in parallel to the magnetic field.
CONSTITUTION: The light from a light source 4 is collimated by a lens 5 and thereby transduced into a parallel beam, and a straight polarized light is taken out by a polarizer 2 and introduced into the Faraday-effect element 1. The light is reflected by the perpendicular surfaces 1a and 1b of the element 1 and turned back, and is taken outside from the plane of incidence and introduced into a light-receiving part 7 through an analyzer 3 and a lens 6. In addition, the ring-shaped magnet 8 is arranged to be movable in parallel to the beam through the intermediary of an arm 9, and by the displacement of the magnet 8 the magnetic field impressed on the element 1 is changed and detected by the light-receiving part 7 as the change in the strength of the output of the light taken out from the analyzer 3. By utilizing the light in this way, the sensor which is strong against electromagnetic noises and enables the detection from a remote place can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP13263379A 1979-10-15 1979-10-15 Sensor Pending JPS5655811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13263379A JPS5655811A (en) 1979-10-15 1979-10-15 Sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13263379A JPS5655811A (en) 1979-10-15 1979-10-15 Sensor

Publications (1)

Publication Number Publication Date
JPS5655811A true JPS5655811A (en) 1981-05-16

Family

ID=15085883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13263379A Pending JPS5655811A (en) 1979-10-15 1979-10-15 Sensor

Country Status (1)

Country Link
JP (1) JPS5655811A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5892823A (en) * 1981-11-27 1983-06-02 Yokogawa Hokushin Electric Corp Flow meter
JPH01250821A (en) * 1988-03-31 1989-10-05 Teijin Seiki Co Ltd Analog faraday effect type optical position detector
JPH01250823A (en) * 1988-03-31 1989-10-05 Teijin Seiki Co Ltd Optical position detecting device with reflecting member utilizing faraday effect
US5463316A (en) * 1992-06-03 1995-10-31 Mitsubishi Gas Chemical Co., Ltd. Magnetooptic sensor head
US5859531A (en) * 1996-07-25 1999-01-12 Maurice; Lisa Brackenbury Displacement apparatus using a magnetic optic sensor and position dependent magnetic field

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5892823A (en) * 1981-11-27 1983-06-02 Yokogawa Hokushin Electric Corp Flow meter
JPH01250821A (en) * 1988-03-31 1989-10-05 Teijin Seiki Co Ltd Analog faraday effect type optical position detector
JPH01250823A (en) * 1988-03-31 1989-10-05 Teijin Seiki Co Ltd Optical position detecting device with reflecting member utilizing faraday effect
US5463316A (en) * 1992-06-03 1995-10-31 Mitsubishi Gas Chemical Co., Ltd. Magnetooptic sensor head
US5859531A (en) * 1996-07-25 1999-01-12 Maurice; Lisa Brackenbury Displacement apparatus using a magnetic optic sensor and position dependent magnetic field

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