JPS5639A - Optical recording and reproducing unit - Google Patents

Optical recording and reproducing unit

Info

Publication number
JPS5639A
JPS5639A JP7531179A JP7531179A JPS5639A JP S5639 A JPS5639 A JP S5639A JP 7531179 A JP7531179 A JP 7531179A JP 7531179 A JP7531179 A JP 7531179A JP S5639 A JPS5639 A JP S5639A
Authority
JP
Japan
Prior art keywords
light
cylindrical lenses
spot
semiconductor laser
high power
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.)
Granted
Application number
JP7531179A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6161450B2 (enrdf_load_stackoverflow
Inventor
Michiyoshi Nagashima
Tomio Yoshida
Akifumi Nakada
Shunji Harikae
Toshio Sato
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 JP7531179A priority Critical patent/JPS5639A/ja
Publication of JPS5639A publication Critical patent/JPS5639A/ja
Publication of JPS6161450B2 publication Critical patent/JPS6161450B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP7531179A 1979-06-14 1979-06-14 Optical recording and reproducing unit Granted JPS5639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7531179A JPS5639A (en) 1979-06-14 1979-06-14 Optical recording and reproducing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7531179A JPS5639A (en) 1979-06-14 1979-06-14 Optical recording and reproducing unit

Publications (2)

Publication Number Publication Date
JPS5639A true JPS5639A (en) 1981-01-06
JPS6161450B2 JPS6161450B2 (enrdf_load_stackoverflow) 1986-12-25

Family

ID=13572573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7531179A Granted JPS5639A (en) 1979-06-14 1979-06-14 Optical recording and reproducing unit

Country Status (1)

Country Link
JP (1) JPS5639A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0194536A (ja) * 1987-10-05 1989-04-13 Canon Inc 光ヘツド装置
JPH01124168U (enrdf_load_stackoverflow) * 1987-10-26 1989-08-23
JPH0276592A (ja) * 1988-08-10 1990-03-15 Rhone Poulenc Chim 乳酸の製法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0194536A (ja) * 1987-10-05 1989-04-13 Canon Inc 光ヘツド装置
JPH01124168U (enrdf_load_stackoverflow) * 1987-10-26 1989-08-23
JPH0276592A (ja) * 1988-08-10 1990-03-15 Rhone Poulenc Chim 乳酸の製法

Also Published As

Publication number Publication date
JPS6161450B2 (enrdf_load_stackoverflow) 1986-12-25

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