JPH0550055B2 - - Google Patents

Info

Publication number
JPH0550055B2
JPH0550055B2 JP58173920A JP17392083A JPH0550055B2 JP H0550055 B2 JPH0550055 B2 JP H0550055B2 JP 58173920 A JP58173920 A JP 58173920A JP 17392083 A JP17392083 A JP 17392083A JP H0550055 B2 JPH0550055 B2 JP H0550055B2
Authority
JP
Japan
Prior art keywords
focus error
error signal
light
disk
focus
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
JP58173920A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6066337A (ja
Inventor
Yutaka Ooki
Kyoshi Toyoda
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP58173920A priority Critical patent/JPS6066337A/ja
Publication of JPS6066337A publication Critical patent/JPS6066337A/ja
Publication of JPH0550055B2 publication Critical patent/JPH0550055B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Automatic Focus Adjustment (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
JP58173920A 1983-09-20 1983-09-20 フオ−カスサ−ボ装置 Granted JPS6066337A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58173920A JPS6066337A (ja) 1983-09-20 1983-09-20 フオ−カスサ−ボ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58173920A JPS6066337A (ja) 1983-09-20 1983-09-20 フオ−カスサ−ボ装置

Publications (2)

Publication Number Publication Date
JPS6066337A JPS6066337A (ja) 1985-04-16
JPH0550055B2 true JPH0550055B2 (enrdf_load_stackoverflow) 1993-07-28

Family

ID=15969523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58173920A Granted JPS6066337A (ja) 1983-09-20 1983-09-20 フオ−カスサ−ボ装置

Country Status (1)

Country Link
JP (1) JPS6066337A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2664369B2 (ja) * 1987-03-20 1997-10-15 富士通株式会社 グレーティングレンズ光学系を用いたフォーカシング装置
EP0277883B1 (en) * 1987-02-03 1996-04-24 Fujitsu Limited Holographic deflection device
JP2012027183A (ja) * 2010-07-22 2012-02-09 Mitsutoyo Corp オートフォーカス装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853033A (ja) * 1981-09-26 1983-03-29 Foster Denki Kk 光学式記録情報再生装置

Also Published As

Publication number Publication date
JPS6066337A (ja) 1985-04-16

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