JPH0643848Y2 - 光集束位置制御装置 - Google Patents

光集束位置制御装置

Info

Publication number
JPH0643848Y2
JPH0643848Y2 JP1990026418U JP2641890U JPH0643848Y2 JP H0643848 Y2 JPH0643848 Y2 JP H0643848Y2 JP 1990026418 U JP1990026418 U JP 1990026418U JP 2641890 U JP2641890 U JP 2641890U JP H0643848 Y2 JPH0643848 Y2 JP H0643848Y2
Authority
JP
Japan
Prior art keywords
lens barrel
objective lens
lens
optical
focusing
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
JP1990026418U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0310311U (en]
Inventor
完治 西井
亮 一之瀬
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1990026418U priority Critical patent/JPH0643848Y2/ja
Publication of JPH0310311U publication Critical patent/JPH0310311U/ja
Application granted granted Critical
Publication of JPH0643848Y2 publication Critical patent/JPH0643848Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP1990026418U 1990-03-15 1990-03-15 光集束位置制御装置 Expired - Lifetime JPH0643848Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990026418U JPH0643848Y2 (ja) 1990-03-15 1990-03-15 光集束位置制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990026418U JPH0643848Y2 (ja) 1990-03-15 1990-03-15 光集束位置制御装置

Publications (2)

Publication Number Publication Date
JPH0310311U JPH0310311U (en]) 1991-01-31
JPH0643848Y2 true JPH0643848Y2 (ja) 1994-11-14

Family

ID=31529312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990026418U Expired - Lifetime JPH0643848Y2 (ja) 1990-03-15 1990-03-15 光集束位置制御装置

Country Status (1)

Country Link
JP (1) JPH0643848Y2 (en])

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL182257C (nl) * 1974-12-23 1988-02-01 Philips Nv Inrichting voor het uitlezen van een vlakke reflekterende registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur.
FR2330062A1 (fr) * 1975-10-31 1977-05-27 Thomson Brandt Dispositif de recherche de focalisation et lecteur optique comportant un tel dispositif

Also Published As

Publication number Publication date
JPH0310311U (en]) 1991-01-31

Similar Documents

Publication Publication Date Title
US6452877B2 (en) Apparatus for recording and/or reproducing information and/or from optical information record disk
EP0154302B1 (en) Optical system for detecting a position of an objective lens
JPH0643848Y2 (ja) 光集束位置制御装置
US7257069B2 (en) Optical storage device and optical device
US6345025B1 (en) Apparatus for recording and/or reproducing information and/or from optical information record disk
JPH077513B2 (ja) 光学式情報読取装置
JP2558974B2 (ja) 光ヘッド移送装置
JPH05197982A (ja) 対物レンズ駆動装置
KR100234245B1 (ko) 광픽업장치
JPH11191223A (ja) フォーカス制御装置及びフォーカス制御方法
JPS61177651A (ja) 光デイスク装置
JPS62248140A (ja) 光ピツクアツプ
JPH06111337A (ja) 光学式記録再生装置
JPH04123322A (ja) 光記録再生装置におけるレンズアクチュエータの制御方法
JPH11265517A (ja) 光ディスク装置
JPH0634318B2 (ja) デイスクサ−ボ装置
JPH05174404A (ja) 光学ヘッド
JPH11273127A (ja) 光学ピックアップ及び光ディスク装置
JPH06203399A (ja) 光ピックアップ装置
JPH02302934A (ja) 光学ヘッド