DE3483646D1 - Lichtaufnahmekopf. - Google Patents

Lichtaufnahmekopf.

Info

Publication number
DE3483646D1
DE3483646D1 DE8484902723T DE3483646T DE3483646D1 DE 3483646 D1 DE3483646 D1 DE 3483646D1 DE 8484902723 T DE8484902723 T DE 8484902723T DE 3483646 T DE3483646 T DE 3483646T DE 3483646 D1 DE3483646 D1 DE 3483646D1
Authority
DE
Germany
Prior art keywords
light receiving
receiving head
head
light
receiving
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
DE8484902723T
Other languages
English (en)
Inventor
Masashi Ito
Toshiki Matsuno
Hiroyuki Nakamura
Hiroshi Yasuda
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
Priority claimed from JP58122806A external-priority patent/JPS6015842A/ja
Priority claimed from JP58122804A external-priority patent/JPS6015840A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3483646D1 publication Critical patent/DE3483646D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
DE8484902723T 1983-07-06 1984-07-05 Lichtaufnahmekopf. Expired - Lifetime DE3483646D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP58122806A JPS6015842A (ja) 1983-07-06 1983-07-06 光ピツクアツプ
JP58122804A JPS6015840A (ja) 1983-07-06 1983-07-06 光ピツクアツプ
PCT/JP1984/000344 WO1985000457A1 (fr) 1983-07-06 1984-07-05 Photo-capteur

Publications (1)

Publication Number Publication Date
DE3483646D1 true DE3483646D1 (de) 1991-01-03

Family

ID=26459859

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484902723T Expired - Lifetime DE3483646D1 (de) 1983-07-06 1984-07-05 Lichtaufnahmekopf.

Country Status (4)

Country Link
US (1) US4868821A (de)
EP (1) EP0148278B1 (de)
DE (1) DE3483646D1 (de)
WO (1) WO1985000457A1 (de)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2271585B1 (de) * 1974-05-14 1976-10-15 Philips Nv
GB1603596A (en) * 1977-06-06 1981-11-25 Mca Disco Vision Optical transducer and focusing system
US4235507A (en) * 1977-09-16 1980-11-25 Hitachi, Ltd. Optical system to condense light from a semiconductor laser into a circular spot
JPS5545171A (en) * 1978-09-26 1980-03-29 Mitsubishi Electric Corp Track detection controller
US4333173A (en) * 1979-06-15 1982-06-01 Hitachi, Ltd. Optical information processor with prismatic correction of laser beam shape
JPS566038U (de) * 1979-06-25 1981-01-20
JPS56156937A (en) * 1980-04-30 1981-12-03 Matsushita Electric Ind Co Ltd Optical pickup device
CA1132258A (en) * 1980-05-12 1982-09-21 Herman W. Willemsen Scanning head for an optical disc system
JPS576444A (en) * 1980-06-16 1982-01-13 Olympus Optical Co Ltd Objective lens driving device
NL8003729A (nl) * 1980-06-27 1982-01-18 Philips Nv Inrichting voor optische scherpstelling.
JPS5771529A (en) * 1980-10-22 1982-05-04 Tdk Corp Movable lens for controlling focus
JPS5787345U (de) * 1980-11-14 1982-05-29
US4482986A (en) * 1981-01-30 1984-11-13 Sony Corporation Objective lens mount for optical disc player
JPH0718972B2 (ja) * 1983-11-07 1995-03-06 オリンパス光学工業株式会社 大口径比写真レンズ
JPH05133603A (ja) * 1991-11-12 1993-05-28 Matsushita Electric Ind Co Ltd 湯沸器

Also Published As

Publication number Publication date
EP0148278B1 (de) 1990-11-22
US4868821A (en) 1989-09-19
EP0148278A4 (de) 1987-02-03
EP0148278A1 (de) 1985-07-17
WO1985000457A1 (fr) 1985-01-31

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee