JPH0216848B2 - - Google Patents

Info

Publication number
JPH0216848B2
JPH0216848B2 JP57012569A JP1256982A JPH0216848B2 JP H0216848 B2 JPH0216848 B2 JP H0216848B2 JP 57012569 A JP57012569 A JP 57012569A JP 1256982 A JP1256982 A JP 1256982A JP H0216848 B2 JPH0216848 B2 JP H0216848B2
Authority
JP
Japan
Prior art keywords
scale
light
position information
pit
spot
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.)
Expired - Lifetime
Application number
JP57012569A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58132892A (ja
Inventor
Toshitaka Yagio
Susumu Makinochi
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.)
Nikon Corp
Original Assignee
Nippon Kogaku KK
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 Nippon Kogaku KK filed Critical Nippon Kogaku KK
Priority to JP57012569A priority Critical patent/JPS58132892A/ja
Publication of JPS58132892A publication Critical patent/JPS58132892A/ja
Publication of JPH0216848B2 publication Critical patent/JPH0216848B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Optical Transform (AREA)
  • Optical Recording Or Reproduction (AREA)
JP57012569A 1982-01-30 1982-01-30 光電式エンコ−ダ装置 Granted JPS58132892A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57012569A JPS58132892A (ja) 1982-01-30 1982-01-30 光電式エンコ−ダ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57012569A JPS58132892A (ja) 1982-01-30 1982-01-30 光電式エンコ−ダ装置

Publications (2)

Publication Number Publication Date
JPS58132892A JPS58132892A (ja) 1983-08-08
JPH0216848B2 true JPH0216848B2 (esLanguage) 1990-04-18

Family

ID=11808979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57012569A Granted JPS58132892A (ja) 1982-01-30 1982-01-30 光電式エンコ−ダ装置

Country Status (1)

Country Link
JP (1) JPS58132892A (esLanguage)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033013A (ja) * 1983-08-03 1985-02-20 Optic:Kk 位置エンコ−ダ
JPS6033012A (ja) * 1983-08-03 1985-02-20 Optic:Kk 回転位置エンコ−ダ
JPS6056217A (ja) * 1983-09-07 1985-04-01 Optic:Kk 回転位置エンコ−ダ
JPH0274823A (ja) * 1988-09-09 1990-03-14 Shin Meiwa Ind Co Ltd 位置検出装置
GB9807020D0 (en) * 1998-04-02 1998-06-03 Bamford Excavators Ltd A method of marking a mechanical element, an encoding scheme, a reading means for said marking and an apparatus for determining the position of said element

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222547A (en) * 1975-08-14 1977-02-19 Mitsubishi Electric Corp Electron beam device
JPS5319806A (en) * 1976-08-09 1978-02-23 Hitachi Ltd Information reproducer
DE2710166C2 (de) * 1977-03-09 1984-09-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Mechanisch adressierter optischer Speicher

Also Published As

Publication number Publication date
JPS58132892A (ja) 1983-08-08

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