JPS6488932A - Recording and reproducing device - Google Patents

Recording and reproducing device

Info

Publication number
JPS6488932A
JPS6488932A JP62245017A JP24501787A JPS6488932A JP S6488932 A JPS6488932 A JP S6488932A JP 62245017 A JP62245017 A JP 62245017A JP 24501787 A JP24501787 A JP 24501787A JP S6488932 A JPS6488932 A JP S6488932A
Authority
JP
Japan
Prior art keywords
channels
laser
lasers
recording
lenses
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.)
Pending
Application number
JP62245017A
Other languages
Japanese (ja)
Inventor
Michio Oka
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP62245017A priority Critical patent/JPS6488932A/en
Publication of JPS6488932A publication Critical patent/JPS6488932A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)

Abstract

PURPOSE:To increase the number of channels without damaging the power efficiency of a laser by arranging an optical member to sandwich the divergence angle of respective laser lights to the front surface of plural lasers, and simultaneously executing the recording and reproducing of plural channels. CONSTITUTION:At the front surface of semiconductor lasers 11, 12,...1n, a micro- lens array 8 is distributed so that micro-lenses 81, 82,...8n can correspond. The divergence angle of laser lights l1, l2,...ln from the lasers 11, 12,...1n is made narrower by the lenses 81, 82,...8n, respectively and thereafter, the angle is supplied to a collimator lens 2. For this reason, even when the aperture ratio of a lens 2 is made smaller, the power efficiency of the laser is not damaged. Consequently, an interval L2 of prescribed positions P1-Pn on a recording medium 5 can be minimized and the number of channels can be enlarged.
JP62245017A 1987-09-29 1987-09-29 Recording and reproducing device Pending JPS6488932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62245017A JPS6488932A (en) 1987-09-29 1987-09-29 Recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62245017A JPS6488932A (en) 1987-09-29 1987-09-29 Recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6488932A true JPS6488932A (en) 1989-04-03

Family

ID=17127336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62245017A Pending JPS6488932A (en) 1987-09-29 1987-09-29 Recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6488932A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965948A (en) * 1982-10-06 1984-04-14 Canon Inc Recording and reproducing method
JPS6093646A (en) * 1983-10-26 1985-05-25 Seiko Epson Corp Recording and reproducing device of optical memory
JPS61131247A (en) * 1984-11-30 1986-06-18 Hitachi Ltd Optical head part of optical information recording and reproducing device
JPS6265012A (en) * 1985-09-18 1987-03-24 Toshiba Corp light emitting element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965948A (en) * 1982-10-06 1984-04-14 Canon Inc Recording and reproducing method
JPS6093646A (en) * 1983-10-26 1985-05-25 Seiko Epson Corp Recording and reproducing device of optical memory
JPS61131247A (en) * 1984-11-30 1986-06-18 Hitachi Ltd Optical head part of optical information recording and reproducing device
JPS6265012A (en) * 1985-09-18 1987-03-24 Toshiba Corp light emitting element

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