JPH0439741B2 - - Google Patents

Info

Publication number
JPH0439741B2
JPH0439741B2 JP28501185A JP28501185A JPH0439741B2 JP H0439741 B2 JPH0439741 B2 JP H0439741B2 JP 28501185 A JP28501185 A JP 28501185A JP 28501185 A JP28501185 A JP 28501185A JP H0439741 B2 JPH0439741 B2 JP H0439741B2
Authority
JP
Japan
Prior art keywords
diffraction grating
driver
pickup device
protrusion
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
JP28501185A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62143233A (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 JP28501185A priority Critical patent/JPS62143233A/ja
Publication of JPS62143233A publication Critical patent/JPS62143233A/ja
Publication of JPH0439741B2 publication Critical patent/JPH0439741B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP28501185A 1985-12-18 1985-12-18 光学式信号ピツクアツブ装置 Granted JPS62143233A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28501185A JPS62143233A (ja) 1985-12-18 1985-12-18 光学式信号ピツクアツブ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28501185A JPS62143233A (ja) 1985-12-18 1985-12-18 光学式信号ピツクアツブ装置

Publications (2)

Publication Number Publication Date
JPS62143233A JPS62143233A (ja) 1987-06-26
JPH0439741B2 true JPH0439741B2 (forum.php) 1992-06-30

Family

ID=17685992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28501185A Granted JPS62143233A (ja) 1985-12-18 1985-12-18 光学式信号ピツクアツブ装置

Country Status (1)

Country Link
JP (1) JPS62143233A (forum.php)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6445314U (forum.php) * 1987-09-10 1989-03-20

Also Published As

Publication number Publication date
JPS62143233A (ja) 1987-06-26

Similar Documents

Publication Publication Date Title
US4817074A (en) Method and apparatus for detecting the focusing state and positioning accuracy of a light beam directed onto an optical disk tracking guide in an optical recording system
JP3547038B2 (ja) 光ピックアップ装置
JP2975395B2 (ja) 光ピックアップ装置
JPH0266733A (ja) 光学式情報記録再生装置の光学系
EP0333511B1 (en) Optical pickup device
EP0475523B1 (en) Device for optically scanning an information plane
JPH06101138B2 (ja) 光ヘツド装置
JPH0439741B2 (forum.php)
JPH0370859B2 (forum.php)
US20030165014A1 (en) Optical pickup and optical disc drive
JPH02128327A (ja) 光ピックアップ装置
JPH0519852Y2 (forum.php)
JP2858202B2 (ja) 光ピックアップ
JPS63144423A (ja) 光ヘツド装置
JPS61233445A (ja) 光ピツクアツプ
JP2690550B2 (ja) 光ピックアップ装置
JPH11203719A (ja) 光学素子ホルダーと光学ピックアップ及び光ディスク装置
JPH029024A (ja) 光学式情報記録再生装置
JPH0721890B2 (ja) 光磁気ヘツド装置
JPH06349082A (ja) 光ピックアップ装置
JPH05234114A (ja) 光ピックアップ
JPH0210491B2 (forum.php)
JPH058499B2 (forum.php)
JPH10289473A (ja) 光学ヘッドおよび光ドライブ装置
JPS63200329A (ja) 光ヘツド

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term