NL7809382A - Optisch stelsel. - Google Patents

Optisch stelsel.

Info

Publication number
NL7809382A
NL7809382A NL7809382A NL7809382A NL7809382A NL 7809382 A NL7809382 A NL 7809382A NL 7809382 A NL7809382 A NL 7809382A NL 7809382 A NL7809382 A NL 7809382A NL 7809382 A NL7809382 A NL 7809382A
Authority
NL
Netherlands
Prior art keywords
optical system
optical
Prior art date
Application number
NL7809382A
Other languages
English (en)
Other versions
NL190494B (nl
NL190494C (nl
Original Assignee
Hitachi 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 JP11139977A external-priority patent/JPS5445156A/ja
Priority claimed from JP4033378A external-priority patent/JPS54133354A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of NL7809382A publication Critical patent/NL7809382A/nl
Publication of NL190494B publication Critical patent/NL190494B/nl
Application granted granted Critical
Publication of NL190494C publication Critical patent/NL190494C/nl

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0972—Prisms
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
NLAANVRAGE7809382,A 1977-09-16 1978-09-14 Optische inrichting voor het bewerken van informatie. NL190494C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11139977A JPS5445156A (en) 1977-09-16 1977-09-16 Optical system
JP4033378A JPS54133354A (en) 1978-04-07 1978-04-07 Optical system

Publications (3)

Publication Number Publication Date
NL7809382A true NL7809382A (nl) 1979-03-20
NL190494B NL190494B (nl) 1993-10-18
NL190494C NL190494C (nl) 1994-03-16

Family

ID=26379783

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7809382,A NL190494C (nl) 1977-09-16 1978-09-14 Optische inrichting voor het bewerken van informatie.

Country Status (6)

Country Link
US (1) US4235507A (nl)
CA (1) CA1109961A (nl)
DE (1) DE2840294A1 (nl)
FR (1) FR2403575A1 (nl)
GB (1) GB2006461B (nl)
NL (1) NL190494C (nl)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333173A (en) * 1979-06-15 1982-06-01 Hitachi, Ltd. Optical information processor with prismatic correction of laser beam shape
FR2462758A1 (fr) * 1979-08-03 1981-02-13 Thomson Csf Dispositif optique d'acces a une piste portee par un support d'information et systeme de memoire optique comportant un tel dispositif
JPS57111838A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Optical information reader
US4397527A (en) * 1981-02-26 1983-08-09 Eastman Kodak Company Apparatus for use in correcting beam anamorphicity by vector diffraction
JPS57196212A (en) * 1981-05-29 1982-12-02 Hitachi Ltd Optical system for semiconductor laser
US4530574A (en) * 1982-07-28 1985-07-23 Xerox Corporation Beam collimation and focusing of multi-emitter or broad emitter lasers
EP0148278B1 (en) * 1983-07-06 1990-11-22 Matsushita Electric Industrial Co., Ltd. Light pickup
JPH0743469B2 (ja) * 1984-04-18 1995-05-15 ソニー株式会社 記録再生光学系の製造方法
US5027340A (en) * 1989-06-01 1991-06-25 Mitsubishi Denki Kabushiki Kaisha Object lens head assembly
JP2980938B2 (ja) * 1990-04-12 1999-11-22 株式会社ニデック 半導体レーザー光を集光するためのレンズ系
JPH05109110A (ja) * 1991-10-16 1993-04-30 Sony Corp 光学ピツクアツプ装置
US5253245A (en) * 1992-01-21 1993-10-12 International Business Machines Corporation Optical data storage tracking system
US5321718A (en) * 1993-01-28 1994-06-14 Sdl, Inc. Frequency converted laser diode and lens system therefor
JP3373079B2 (ja) * 1995-04-27 2003-02-04 大日本スクリーン製造株式会社 光学装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3506329A (en) * 1967-02-23 1970-04-14 Weaver Co W R Telescopic sight with adjustable negative and erector lenses
US3801181A (en) * 1968-08-10 1974-04-02 Nippon Selfoc Co Ltd Gradient index light conductor
US3855426A (en) * 1971-03-11 1974-12-17 Philips Corp Video disc recording and optical playback system therefor
US3855607A (en) * 1973-05-29 1974-12-17 Rca Corp Semiconductor injection laser with reduced divergence of emitted beam
US3974507A (en) * 1975-09-29 1976-08-10 Bell Telephone Laboratories, Incorporated Conversion of stripe-geometry junction laser emission to a spherical wavefront
JPS5266405A (en) * 1975-11-29 1977-06-01 Victor Co Of Japan Ltd Optical recording system of information recording discs
GB1577133A (en) * 1976-03-19 1980-10-22 Rca Corp Video information record and playback apparatus

Also Published As

Publication number Publication date
FR2403575B1 (nl) 1981-08-14
GB2006461B (en) 1982-05-19
CA1109961A (en) 1981-09-29
GB2006461A (en) 1979-05-02
NL190494B (nl) 1993-10-18
FR2403575A1 (fr) 1979-04-13
US4235507A (en) 1980-11-25
NL190494C (nl) 1994-03-16
DE2840294A1 (de) 1979-03-29

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Legal Events

Date Code Title Description
BB A search report has been drawn up
A85 Still pending on 85-01-01
BC A request for examination has been filed
V4 Lapsed because of reaching the maximum lifetime of a patent

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