JPS559174A - Digital scale device - Google Patents

Digital scale device

Info

Publication number
JPS559174A
JPS559174A JP8314578A JP8314578A JPS559174A JP S559174 A JPS559174 A JP S559174A JP 8314578 A JP8314578 A JP 8314578A JP 8314578 A JP8314578 A JP 8314578A JP S559174 A JPS559174 A JP S559174A
Authority
JP
Japan
Prior art keywords
scale
slits
slit
row
reference position
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.)
Granted
Application number
JP8314578A
Other languages
Japanese (ja)
Other versions
JPS5853286B2 (en
Inventor
Hitoshi Masaki
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.)
Mitsutoyo Manufacturing Co Ltd
Original Assignee
Mitsutoyo 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 Mitsutoyo Manufacturing Co Ltd filed Critical Mitsutoyo Manufacturing Co Ltd
Priority to JP8314578A priority Critical patent/JPS5853286B2/en
Publication of JPS559174A publication Critical patent/JPS559174A/en
Publication of JPS5853286B2 publication Critical patent/JPS5853286B2/en
Expired legal-status Critical Current

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  • Optical Transform (AREA)

Abstract

PURPOSE: To make it possible to detect the reference position of a scale by means of a simple structure by placing a reference slit in a row of a measuring slits of a main scale and thereby forming a reference position detecting unit.
CONSTITUTION: Main scale 30 is provided with a row of measuring slits 32, and index scale 34 is provided with measuring gate slits 36 and 38, which are placed on top of the slits of main scale 30 for comparison. When both scales 34 and 30 make a relative motion, the amount of displacement is subjected to photoelectric conversion. On a part of the slit row 32 is formed reference position detecting unit 40 having a wide slit. On the other hand, index scale 34 is also provided with reference gate slit 42 corresponding to it. On the side of main scale 30 are provided light emitters 44, 46 and 48. On the side of index scale 34 are provided light receivers 50, 52 and 54 corresponding to these light emitters, and these light receivers forms a moving photoelectric converter fixed on the same base plate as index scale 34.
COPYRIGHT: (C)1980,JPO&Japio
JP8314578A 1978-07-07 1978-07-07 digital scale device Expired JPS5853286B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8314578A JPS5853286B2 (en) 1978-07-07 1978-07-07 digital scale device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8314578A JPS5853286B2 (en) 1978-07-07 1978-07-07 digital scale device

Publications (2)

Publication Number Publication Date
JPS559174A true JPS559174A (en) 1980-01-23
JPS5853286B2 JPS5853286B2 (en) 1983-11-28

Family

ID=13794046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8314578A Expired JPS5853286B2 (en) 1978-07-07 1978-07-07 digital scale device

Country Status (1)

Country Link
JP (1) JPS5853286B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837515A (en) * 1981-08-10 1983-03-04 Yokogawa Hewlett Packard Ltd Optical modulator
US6537602B1 (en) 1998-10-08 2003-03-25 Fuji Oil Co., Ltd. Chocolate compositions and utilization thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6071395U (en) * 1983-10-24 1985-05-20 藤本　豊久 Drain pipe cleaning equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837515A (en) * 1981-08-10 1983-03-04 Yokogawa Hewlett Packard Ltd Optical modulator
JPS6453914U (en) * 1981-08-10 1989-04-03
US6537602B1 (en) 1998-10-08 2003-03-25 Fuji Oil Co., Ltd. Chocolate compositions and utilization thereof

Also Published As

Publication number Publication date
JPS5853286B2 (en) 1983-11-28

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