JPH0411219Y2 - - Google Patents

Info

Publication number
JPH0411219Y2
JPH0411219Y2 JP1984103768U JP10376884U JPH0411219Y2 JP H0411219 Y2 JPH0411219 Y2 JP H0411219Y2 JP 1984103768 U JP1984103768 U JP 1984103768U JP 10376884 U JP10376884 U JP 10376884U JP H0411219 Y2 JPH0411219 Y2 JP H0411219Y2
Authority
JP
Japan
Prior art keywords
signal
optical disk
objective lens
separation
light receiving
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
JP1984103768U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6121018U (ja
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 filed Critical
Priority to JP10376884U priority Critical patent/JPS6121018U/ja
Publication of JPS6121018U publication Critical patent/JPS6121018U/ja
Application granted granted Critical
Publication of JPH0411219Y2 publication Critical patent/JPH0411219Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP10376884U 1984-07-11 1984-07-11 光デイスク損傷防止装置 Granted JPS6121018U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10376884U JPS6121018U (ja) 1984-07-11 1984-07-11 光デイスク損傷防止装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10376884U JPS6121018U (ja) 1984-07-11 1984-07-11 光デイスク損傷防止装置

Publications (2)

Publication Number Publication Date
JPS6121018U JPS6121018U (ja) 1986-02-06
JPH0411219Y2 true JPH0411219Y2 (cs) 1992-03-19

Family

ID=30663140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10376884U Granted JPS6121018U (ja) 1984-07-11 1984-07-11 光デイスク損傷防止装置

Country Status (1)

Country Link
JP (1) JPS6121018U (cs)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111136A (en) * 1980-02-01 1981-09-02 Pioneer Video Corp Protective device for reader of optical disc player

Also Published As

Publication number Publication date
JPS6121018U (ja) 1986-02-06

Similar Documents

Publication Publication Date Title
US5638353A (en) Optical head device
EP0545133A2 (en) Optical pickup device and focusing servo device employed therein
JP4141622B2 (ja) ピックアップ装置
JP2000057616A (ja) 光ピックアップ、情報再生装置及び情報記録装置
EP0136574A1 (en) Magneto-optical apparatus
US6219317B1 (en) Optical disc recording and/or reproducing apparatus and method
JPH0411219Y2 (cs)
US6141305A (en) Optical disk recording and reproducing apparatus and method and tracking servo apparatus and method
JPH0526253B2 (cs)
US20090252003A1 (en) Optical recording/reproducing apparatus and focus search method
JP2598165B2 (ja) 光ディスク記録再生装置
EP0292258B1 (en) Optical information recording and reproducing apparatus
JP3567444B2 (ja) 記録媒体再生装置および記録媒体再生方法
HK113395A (en) Optical scanning device
JP2005251240A (ja) 光学的記録再生装置
US20040095858A1 (en) Method and apparatus for ocntrolling objective lens to prevent disc from being scratched by the objective lens
JP3193865B2 (ja) 光学的記録媒体のフォーカス制御装置
JPH0444808B2 (cs)
JP3899693B2 (ja) 光ディスク記録再生装置及び方法並びに光ディスク装置のトラッキングサーボ駆動装置及び方法
JPH0883432A (ja) 光ディスク再生装置
JPH11232655A5 (cs)
JP2910367B2 (ja) 光ピックアップ装置におけるフォーカシング引込み方法および装置
JPH053661B2 (cs)
JP2002133687A (ja) 光情報記録再生装置
JPH0379768B2 (cs)