DE69321392D1 - Phase change type optical disc device and optical head therefor - Google Patents

Phase change type optical disc device and optical head therefor

Info

Publication number
DE69321392D1
DE69321392D1 DE69321392T DE69321392T DE69321392D1 DE 69321392 D1 DE69321392 D1 DE 69321392D1 DE 69321392 T DE69321392 T DE 69321392T DE 69321392 T DE69321392 T DE 69321392T DE 69321392 D1 DE69321392 D1 DE 69321392D1
Authority
DE
Germany
Prior art keywords
phase change
disc device
change type
optical disc
head therefor
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 - Fee Related
Application number
DE69321392T
Other languages
German (de)
Other versions
DE69321392T2 (en
Inventor
Mitsuya Okada
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.)
NEC Corp
Original Assignee
NEC 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
Priority claimed from JP4140816A external-priority patent/JP2897532B2/en
Application filed by NEC Corp filed Critical NEC Corp
Publication of DE69321392D1 publication Critical patent/DE69321392D1/en
Application granted granted Critical
Publication of DE69321392T2 publication Critical patent/DE69321392T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

DE1993621392 1992-06-02 1993-06-01 Phase change type optical disc device and optical head therefor Expired - Fee Related DE69321392T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4140816A JP2897532B2 (en) 1992-06-02 1992-06-02 Reproduction method of phase change optical disk

Publications (2)

Publication Number Publication Date
DE69321392D1 true DE69321392D1 (en) 1998-11-12
DE69321392T2 DE69321392T2 (en) 1999-03-04

Family

ID=15277403

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1993621392 Expired - Fee Related DE69321392T2 (en) 1992-06-02 1993-06-01 Phase change type optical disc device and optical head therefor

Country Status (1)

Country Link
DE (1) DE69321392T2 (en)

Also Published As

Publication number Publication date
DE69321392T2 (en) 1999-03-04

Similar Documents

Publication Publication Date Title
DE69129616D1 (en) Optical turntable and optical head
DE69630930D1 (en) Optical disk device and optical head therefor
DE69808154T2 (en) Optical head and optical disk device using this
DE69426712T2 (en) Optical head device and optical information device
DE69419550D1 (en) Optical head
DE69329945T2 (en) POLARIZING ELEMENT, OPTICAL ELEMENT AND OPTICAL HEAD
DE69417791D1 (en) Disk device and disk drive device
DE69324535D1 (en) Information recording device
DE69726527D1 (en) OPTICAL HEAD AND OPTICAL RECORDING DEVICE
DE69329355T2 (en) Optical recording medium and optical recording / reproducing device
DE69327940D1 (en) Magneto-optical disk drive device
DE69318744D1 (en) Light source unit and thus equipped optical head
DE69218422D1 (en) Electro-optical head
DE69318494T2 (en) Disc recorder
DE69318652D1 (en) Optimal recording / playback device
DE69324897D1 (en) Liquid jet recording head and liquid jet recording device
DE69421029D1 (en) DISK RECORDING DEVICE
DE69127324D1 (en) Optical head
DE69321392D1 (en) Phase change type optical disc device and optical head therefor
DE69333784D1 (en) disk device
DE69024329D1 (en) Optical head
DE69120631D1 (en) Optical head
DE69522849T2 (en) Recording head and recording device
DE69423040D1 (en) MAGNETIC HEAD AND MAGNETIC HEAD DEVICE
DE69418531T2 (en) Recording / playback device and playback device

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee