JPS5526469A - Encoder unit - Google Patents

Encoder unit

Info

Publication number
JPS5526469A
JPS5526469A JP9971278A JP9971278A JPS5526469A JP S5526469 A JPS5526469 A JP S5526469A JP 9971278 A JP9971278 A JP 9971278A JP 9971278 A JP9971278 A JP 9971278A JP S5526469 A JPS5526469 A JP S5526469A
Authority
JP
Japan
Prior art keywords
light
grids
rotation
shielding plate
light shielding
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
JP9971278A
Other languages
Japanese (ja)
Inventor
Daisuke Ogawara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9971278A priority Critical patent/JPS5526469A/en
Publication of JPS5526469A publication Critical patent/JPS5526469A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make a unit simple-constitution and cheap by providing curved grids, which are in proportion to the rotation angle, in the light shielding plate fixed to the rotation axis.
CONSTITUTION: Light shielding plate 4 is formed by a plate through which no light can pass, and light shielding plate 4 is provided with four sets of grids 6 which consist of curves (Archimedes curves) increasing or reducing the radius linearly according to the rotation of ratation axis 5 and cause the light to pass through and is provided with arc-shaped grids 7 for distinguishing four sets of grids 6 from one another. Then, the light of light source 1 consisting of a light emission diode becomes a parallel light beam by lens 2 and passes through grids 6 and 7 and is received by photo detector 3 where many photo diodes are arranged linearly, and signals from the diode which received the light are processed as binary signals by a reference voltage, thereby detecting the rotation position of rotation axis 5.
COPYRIGHT: (C)1980,JPO&Japio
JP9971278A 1978-08-15 1978-08-15 Encoder unit Pending JPS5526469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9971278A JPS5526469A (en) 1978-08-15 1978-08-15 Encoder unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9971278A JPS5526469A (en) 1978-08-15 1978-08-15 Encoder unit

Publications (1)

Publication Number Publication Date
JPS5526469A true JPS5526469A (en) 1980-02-25

Family

ID=14254678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9971278A Pending JPS5526469A (en) 1978-08-15 1978-08-15 Encoder unit

Country Status (1)

Country Link
JP (1) JPS5526469A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576996A (en) * 1980-06-17 1982-01-13 Tokyo Optical Absolute encoder
JPS576995A (en) * 1980-06-17 1982-01-13 Tokyo Optical Absolute encoder using optical sensor array device
JPS60259909A (en) * 1984-06-06 1985-12-23 Haamonitsuku Drive Syst:Kk Optical potentiometer
JPS61198005A (en) * 1985-02-28 1986-09-02 Matsushita Electric Ind Co Ltd Position detecting device
CN103644927A (en) * 2013-12-12 2014-03-19 刘万更 Adjustable resolution no-level photoelectric absolute value encoder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4968744A (en) * 1972-11-01 1974-07-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4968744A (en) * 1972-11-01 1974-07-03

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576996A (en) * 1980-06-17 1982-01-13 Tokyo Optical Absolute encoder
JPS576995A (en) * 1980-06-17 1982-01-13 Tokyo Optical Absolute encoder using optical sensor array device
JPS60259909A (en) * 1984-06-06 1985-12-23 Haamonitsuku Drive Syst:Kk Optical potentiometer
JPS61198005A (en) * 1985-02-28 1986-09-02 Matsushita Electric Ind Co Ltd Position detecting device
CN103644927A (en) * 2013-12-12 2014-03-19 刘万更 Adjustable resolution no-level photoelectric absolute value encoder
CN103644927B (en) * 2013-12-12 2016-01-13 刘万更 Adjustable resolution no-level photoelectric absolute value encoder

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