JPS628857B2 - - Google Patents

Info

Publication number
JPS628857B2
JPS628857B2 JP12862777A JP12862777A JPS628857B2 JP S628857 B2 JPS628857 B2 JP S628857B2 JP 12862777 A JP12862777 A JP 12862777A JP 12862777 A JP12862777 A JP 12862777A JP S628857 B2 JPS628857 B2 JP S628857B2
Authority
JP
Japan
Prior art keywords
index
scale
light
optical
signal
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
Application number
JP12862777A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5462804A (en
Inventor
Hiroshi Ito
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 JP12862777A priority Critical patent/JPS5462804A/ja
Publication of JPS5462804A publication Critical patent/JPS5462804A/ja
Publication of JPS628857B2 publication Critical patent/JPS628857B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)
JP12862777A 1977-10-28 1977-10-28 Eccentricity detector Granted JPS5462804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12862777A JPS5462804A (en) 1977-10-28 1977-10-28 Eccentricity detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12862777A JPS5462804A (en) 1977-10-28 1977-10-28 Eccentricity detector

Publications (2)

Publication Number Publication Date
JPS5462804A JPS5462804A (en) 1979-05-21
JPS628857B2 true JPS628857B2 (enrdf_load_stackoverflow) 1987-02-25

Family

ID=14989470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12862777A Granted JPS5462804A (en) 1977-10-28 1977-10-28 Eccentricity detector

Country Status (1)

Country Link
JP (1) JPS5462804A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57100604A (en) * 1980-12-15 1982-06-22 Nippon Columbia Co Ltd Manufacture of disk record

Also Published As

Publication number Publication date
JPS5462804A (en) 1979-05-21

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