JPS50156945A - - Google Patents

Info

Publication number
JPS50156945A
JPS50156945A JP50055553A JP5555375A JPS50156945A JP S50156945 A JPS50156945 A JP S50156945A JP 50055553 A JP50055553 A JP 50055553A JP 5555375 A JP5555375 A JP 5555375A JP S50156945 A JPS50156945 A JP S50156945A
Authority
JP
Japan
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
JP50055553A
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 filed Critical
Publication of JPS50156945A publication Critical patent/JPS50156945A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1806—Pulse code modulation systems for audio signals
    • G11B20/1809—Pulse code modulation systems for audio signals by interleaving
    • 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
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • 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
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)
  • Prostheses (AREA)
  • Eyeglasses (AREA)
  • Materials For Medical Uses (AREA)
JP50055553A 1974-05-14 1975-05-13 Pending JPS50156945A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7416628A FR2271585B1 (ja) 1974-05-14 1974-05-14

Publications (1)

Publication Number Publication Date
JPS50156945A true JPS50156945A (ja) 1975-12-18

Family

ID=9138802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50055553A Pending JPS50156945A (ja) 1974-05-14 1975-05-13

Country Status (19)

Country Link
US (1) US4027952A (ja)
JP (1) JPS50156945A (ja)
AT (2) AT353493B (ja)
BE (1) BE828969A (ja)
BR (1) BR7502914A (ja)
CH (1) CH604191A5 (ja)
DD (1) DD120311A5 (ja)
DE (1) DE2520563C2 (ja)
DK (1) DK142158B (ja)
ES (1) ES437582A1 (ja)
FR (1) FR2271585B1 (ja)
GB (1) GB1512652A (ja)
IT (1) IT1038044B (ja)
NL (1) NL178818C (ja)
NO (1) NO145809C (ja)
PL (1) PL103494B1 (ja)
SE (1) SE423001B (ja)
YU (1) YU43742B (ja)
ZA (1) ZA752938B (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588001A (en) * 1978-12-11 1980-07-03 Canon Inc Distance measuring optical system
JPS58179685A (ja) * 1982-04-15 1983-10-20 Mitsubishi Paper Mills Ltd 秘密文書作成用転写シート及びその記録方法
JPS60126617A (ja) * 1983-12-07 1985-07-06 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン 単コリメ−タレンズ
JPS6156314A (ja) * 1984-08-28 1986-03-22 Konishiroku Photo Ind Co Ltd 光情報記録媒体の記録再生用対物レンズ
US4842388A (en) * 1986-07-02 1989-06-27 Matsushita Electric Industrial Co., Ltd. Single optical lense with diffraction limit converging capability and wide field angle
JPH01177006A (ja) * 1987-07-29 1989-07-13 Kyocera Corp 対物レンズ

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7608561A (nl) * 1976-08-02 1978-02-06 Philips Nv Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur.
JPS5723293A (en) * 1980-07-18 1982-02-06 Canon Inc Semiconductor laser device
USRE34455E (en) * 1980-10-31 1993-11-23 Konishiroku Photo Industry Co., Ltd. Large-aperture single lens with aspherical surfaces
JPS5776512A (en) * 1980-10-31 1982-05-13 Konishiroku Photo Ind Co Ltd Large-aperture aspheric single lens
US4426696A (en) * 1981-01-07 1984-01-17 Digital Recording Corp. Optical playback apparatus focusing system for producing a prescribed energy distribution along an axial focal zone
NL8103323A (nl) * 1981-07-13 1983-02-01 Philips Nv Enkelvoudige lens met een sferisch en een asferisch brekend oppervlak.
DE3138023A1 (de) * 1981-09-24 1983-04-07 Robert Bosch Gmbh, 7000 Stuttgart Pulscodemodulationssystem
DE3249662C2 (en) * 1982-05-29 1988-08-04 Optische Werke G. Rodenstock, 8000 Muenchen, De Scanning lens
DE3220408C2 (de) * 1982-05-29 1985-05-15 Optische Werke G. Rodenstock, 8000 München Abtastobjektiv
JPS5926714A (ja) * 1982-08-05 1984-02-13 Olympus Optical Co Ltd 光デイスク用レンズ
EP0148278B1 (en) * 1983-07-06 1990-11-22 Matsushita Electric Industrial Co., Ltd. Light pickup
NL8304213A (nl) * 1983-12-07 1985-07-01 Philips Nv Enkelvoudige lens met een asferisch oppervlak.
JPS60181714A (ja) * 1984-02-29 1985-09-17 Konishiroku Photo Ind Co Ltd 光デイスク用対物レンズ
NL8403198A (nl) * 1984-10-22 1986-05-16 Philips Nv Enkelvoudige bi-asferische lens.
NL8500453A (nl) * 1985-02-18 1986-09-16 Philips Nv Projektielenzenstelsel.
JPS61215512A (ja) * 1985-03-20 1986-09-25 Pioneer Electronic Corp 光学式情報読取装置の対物レンズ
US4768867A (en) * 1985-09-02 1988-09-06 Canon Kabushiki Kaisha Aspherical single lens
JPS62123419A (ja) * 1985-11-22 1987-06-04 Canon Inc 結像レンズ
GB8606838D0 (en) * 1986-03-19 1986-04-23 Combined Optical Ind Ltd Lens
US4728183A (en) * 1986-10-01 1988-03-01 Ocular Instruments, Inc. Ophthalmic lens for observing the fundus of the eye
JPH0823626B2 (ja) * 1987-07-29 1996-03-06 コニカ株式会社 光ディスク用対物レンズ
JPH01136111A (ja) * 1987-11-24 1989-05-29 Minolta Camera Co Ltd 単玉コリメータレンズ
US4927247A (en) * 1988-05-13 1990-05-22 Matsushita Electric Industrial Co., Ltd. Objective lens for optical disk system and optical head using the same
US4932763A (en) * 1988-07-28 1990-06-12 Canon Kabushiki Kaisha Aspherical single lens system for use with optical cards
JPH02150816A (ja) * 1988-12-01 1990-06-11 Canon Inc 非球面単レンズ
JPH02223906A (ja) * 1989-02-24 1990-09-06 Hoya Corp 有限系大口径非球面レンズ
US4979807A (en) * 1989-04-12 1990-12-25 Canon Kabushiki Kaisha Biaspherical single lens for an optical information recording-reproducing apparatus
DE3919985A1 (de) * 1989-06-19 1990-12-20 Rodenstock Instr Kontaktglas
US5309187A (en) * 1992-03-18 1994-05-03 Ocular Instruments, Inc. High magnification ophthalmic lens
JP3019902B2 (ja) * 1992-10-26 2000-03-15 松下電器産業株式会社 焦点誤差検出素子とそれを用いた光ヘッド
US5589896A (en) * 1994-10-26 1996-12-31 Ocular Instruments, Inc. Adjustable indirect ophthalmoscopy lens
US5623323A (en) * 1994-10-26 1997-04-22 Ocular Instruments, Inc. Extra wide field ophthalmic lens
JP3104780B2 (ja) * 1994-12-21 2000-10-30 松下電器産業株式会社 対物レンズ及びそれを用いた光ヘッド装置
US5644396A (en) * 1995-06-20 1997-07-01 Hewlett-Packard Company Spectrograph with low focal ratio
DE102008028200B4 (de) 2008-06-12 2013-01-31 Karlsruher Institut für Technologie Ultraschallwandler mit variabler Fokuseinstellung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388118A (en) * 1942-05-08 1945-10-30 Vickers Electrical Co Ltd Lens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719235A (en) * 1954-04-08 1955-09-27 Eastman Kodak Co Continuous inspection by optical scanning
US3486825A (en) * 1965-05-10 1969-12-30 Bradford Howland Optical test equipment and methods for making and using same
US3877792A (en) * 1974-04-12 1975-04-15 Bell & Howell Co Short focal length, large aperture optical system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388118A (en) * 1942-05-08 1945-10-30 Vickers Electrical Co Ltd Lens

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588001A (en) * 1978-12-11 1980-07-03 Canon Inc Distance measuring optical system
JPS6120841B2 (ja) * 1978-12-11 1986-05-24 Canon Kk
JPS58179685A (ja) * 1982-04-15 1983-10-20 Mitsubishi Paper Mills Ltd 秘密文書作成用転写シート及びその記録方法
JPH0356193B2 (ja) * 1982-04-15 1991-08-27
JPS60126617A (ja) * 1983-12-07 1985-07-06 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン 単コリメ−タレンズ
JPS6156314A (ja) * 1984-08-28 1986-03-22 Konishiroku Photo Ind Co Ltd 光情報記録媒体の記録再生用対物レンズ
JPH0428282B2 (ja) * 1984-08-28 1992-05-14 Konishiroku Photo Ind
US4842388A (en) * 1986-07-02 1989-06-27 Matsushita Electric Industrial Co., Ltd. Single optical lense with diffraction limit converging capability and wide field angle
JPH01177006A (ja) * 1987-07-29 1989-07-13 Kyocera Corp 対物レンズ

Also Published As

Publication number Publication date
DK142158B (da) 1980-09-08
ES437582A1 (es) 1977-05-01
AT353493B (de) 1979-11-12
BR7502914A (pt) 1976-03-23
NL178818C (nl) 1986-05-16
YU121775A (en) 1982-06-30
IT1038044B (it) 1979-11-20
DK142158C (ja) 1981-02-02
DE2520563C2 (de) 1983-07-14
SE423001B (sv) 1982-04-05
DE2520563A1 (de) 1975-11-20
AT364175B (de) 1979-04-15
GB1512652A (en) 1978-06-01
FR2271585B1 (ja) 1976-10-15
NO145809C (no) 1982-06-09
NO751673L (ja) 1975-11-17
ZA752938B (en) 1976-04-28
DK205575A (ja) 1975-11-15
NL7505528A (nl) 1975-11-18
AU8097475A (en) 1976-11-11
BE828969A (nl) 1975-11-12
ATA354778A (de) 1981-02-15
DD120311A5 (ja) 1976-06-05
US4027952A (en) 1977-06-07
CH604191A5 (ja) 1978-08-31
NO145809B (no) 1982-02-22
YU43742B (en) 1989-12-31
ATA364175A (de) 1979-04-15
FR2271585A1 (ja) 1975-12-12
SE7505401L (sv) 1975-11-17
PL103494B1 (pl) 1979-06-30

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