IT1057678B - Dispositivo focalizzatore ottico particolarmente per video riproduttori - Google Patents

Dispositivo focalizzatore ottico particolarmente per video riproduttori

Info

Publication number
IT1057678B
IT1057678B IT67542/76A IT6754276A IT1057678B IT 1057678 B IT1057678 B IT 1057678B IT 67542/76 A IT67542/76 A IT 67542/76A IT 6754276 A IT6754276 A IT 6754276A IT 1057678 B IT1057678 B IT 1057678B
Authority
IT
Italy
Prior art keywords
video players
device particularly
optical focus
focus device
optical
Prior art date
Application number
IT67542/76A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT1057678B publication Critical patent/IT1057678B/it

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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0932—Details of sprung supports
    • 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
    • G02B27/40—Optical focusing aids
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0927—Electromechanical actuators for lens positioning for focusing only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Automatic Focus Adjustment (AREA)
IT67542/76A 1975-03-10 1976-03-05 Dispositivo focalizzatore ottico particolarmente per video riproduttori IT1057678B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7502803.A NL164689C (nl) 1975-03-10 1975-03-10 Optische focusseerinrichting voor het focusseren van een stralingsbundel.

Publications (1)

Publication Number Publication Date
IT1057678B true IT1057678B (it) 1982-03-30

Family

ID=19823333

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67542/76A IT1057678B (it) 1975-03-10 1976-03-05 Dispositivo focalizzatore ottico particolarmente per video riproduttori

Country Status (15)

Country Link
US (1) US4021101A (it)
JP (3) JPS51113706A (it)
AT (1) AT347711B (it)
AU (1) AU501590B2 (it)
CA (1) CA1073101A (it)
CH (1) CH601887A5 (it)
DE (1) DE2608035C2 (it)
DK (1) DK96376A (it)
ES (1) ES445863A1 (it)
FR (1) FR2304139A1 (it)
GB (1) GB1536203A (it)
IT (1) IT1057678B (it)
NL (1) NL164689C (it)
NO (1) NO760795L (it)
SE (1) SE412135B (it)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7605374A (nl) * 1976-05-20 1977-11-22 Philips Nv Inrichting voor het met behulp van een stralen- bundel optisch uitlezen en/of beschrijven van een roterende plaat.
JPS54115943U (it) * 1978-02-02 1979-08-14
US4194811A (en) * 1978-05-03 1980-03-25 The United States Of America As Represented By The Secretary Of The Air Force Remotely controlled electromagnetic optical focusing assembly
US4251492A (en) * 1978-06-07 1981-02-17 Ciba-Geigy Corporation Purification process
NL7904618A (nl) * 1979-06-13 1980-12-16 Philips Nv Optische focusseerinrichting.
GB2060927B (en) * 1979-07-24 1984-02-01 Universal Pioneer Corp Signal reading device for optical discs
NL8004380A (nl) * 1980-07-31 1982-03-01 Philips Nv Optische inrichting voor het met een stralingsbundel inschrijven en/of uitlezen van registratiesporen.
JPS5736442A (ja) * 1980-08-11 1982-02-27 Toshiba Corp Kogakujohosaiseisochi
US4303324A (en) * 1980-10-06 1981-12-01 Eastman Kodak Company Annular piezoelectric plastic bender lens motor
US4422169A (en) * 1980-10-20 1983-12-20 Discovision Associates Lens assembly for a video recorder-playback machine
FR2497377B1 (fr) * 1980-12-29 1985-06-28 Thomson Csf Dispositif d'exploration optique d'un support d'information
JPS57120240A (en) * 1981-01-16 1982-07-27 Sony Corp Optical disk player
JPS57161134U (it) * 1981-03-31 1982-10-09
JPS57176543A (en) * 1981-04-20 1982-10-29 Sony Corp Optical type track scanner
NL8105072A (nl) * 1981-11-10 1983-06-01 Philips Nv Electro-optische inrichting.
FR2521377A1 (fr) * 1982-01-28 1983-08-12 Ricoh Kk Appareil d'enregistrement et de lecture optique
JPS58177532A (ja) * 1982-04-13 1983-10-18 Mitsubishi Electric Corp 光ビ−ム制御機構
JPS58179947A (ja) * 1982-04-15 1983-10-21 Olympus Optical Co Ltd 光情報再生装置における合焦検出方式
NL8202451A (nl) * 1982-06-17 1984-01-16 Philips Nv Optische inrichting.
US4598989A (en) * 1982-12-23 1986-07-08 Konishiroku Photo Industry Co. Ltd. Camera
US4504935A (en) * 1983-02-14 1985-03-12 U.S. Philips Corporation Electrodynamic focus and radial slide drive for an optical disc system
JPH042420Y2 (it) * 1984-09-28 1992-01-28
US4671656A (en) * 1985-03-20 1987-06-09 Midac Corporation Adjustment for reflective surfaces in interferometers
US5001694A (en) * 1986-05-06 1991-03-19 Pencom International Corp. Tracking and focus actuator for a holographic optical head
CN1262767A (zh) * 1998-03-26 2000-08-09 皇家菲利浦电子有限公司 具有第一和第二透镜单元的光扫描单元
TWM295268U (en) * 2006-01-13 2006-08-01 Yung-Yu Juang Focus module
EP4137856A1 (en) * 2021-08-19 2023-02-22 Leica Microsystems CMS GmbH Optical assembly having a movable lens unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB979727A (en) * 1962-05-30 1965-01-06 George Andrew Douglas Gordon Improvements in microscopes
US3861786A (en) * 1973-05-17 1975-01-21 Teletype Corp System for mounting an optical lens in a holder for limited movement along a fixed axis

Also Published As

Publication number Publication date
SE412135B (sv) 1980-02-18
GB1536203A (en) 1978-12-20
FR2304139B1 (it) 1980-07-04
NL164689B (nl) 1980-08-15
JPS5451808U (it) 1979-04-10
ES445863A1 (es) 1977-05-01
AT347711B (de) 1979-01-10
JPH0229526Y2 (it) 1990-08-08
CA1073101A (en) 1980-03-04
FR2304139A1 (fr) 1976-10-08
CH601887A5 (it) 1978-07-14
JPS57161139U (it) 1982-10-09
ATA168276A (de) 1978-05-15
NL7502803A (nl) 1976-09-14
JPS51113706A (en) 1976-10-07
JPS5756340Y2 (it) 1982-12-04
US4021101A (en) 1977-05-03
SE7602603L (sv) 1976-09-13
DE2608035A1 (de) 1976-09-23
DE2608035C2 (de) 1983-06-01
NL164689C (nl) 1981-01-15
AU501590B2 (en) 1979-06-21
DK96376A (da) 1976-09-11
NO760795L (it) 1976-09-13
AU1184576A (en) 1977-09-15

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