ZA732198B - Optical system for forming an image of an object in a given plane - Google Patents

Optical system for forming an image of an object in a given plane

Info

Publication number
ZA732198B
ZA732198B ZA732198A ZA732198A ZA732198B ZA 732198 B ZA732198 B ZA 732198B ZA 732198 A ZA732198 A ZA 732198A ZA 732198 A ZA732198 A ZA 732198A ZA 732198 B ZA732198 B ZA 732198B
Authority
ZA
South Africa
Prior art keywords
image
forming
optical system
given plane
plane
Prior art date
Application number
ZA732198A
Other languages
English (en)
Inventor
C Velzel
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
Publication of ZA732198B publication Critical patent/ZA732198B/xx

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
    • G11B7/0908—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 for focusing only
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Head (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
ZA732198A 1972-05-11 1973-03-30 Optical system for forming an image of an object in a given plane ZA732198B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7206376A NL7206376A (cs) 1972-05-11 1972-05-11

Publications (1)

Publication Number Publication Date
ZA732198B true ZA732198B (en) 1974-11-27

Family

ID=19816019

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA732198A ZA732198B (en) 1972-05-11 1973-03-30 Optical system for forming an image of an object in a given plane

Country Status (15)

Country Link
US (1) US3876875A (cs)
JP (1) JPS5548366B2 (cs)
AT (1) AT323819B (cs)
BE (1) BE799334A (cs)
CA (1) CA984190A (cs)
CH (1) CH565381A5 (cs)
DE (1) DE2323586C3 (cs)
DK (1) DK134208B (cs)
ES (1) ES414578A1 (cs)
FR (1) FR2184344A5 (cs)
GB (1) GB1434060A (cs)
IT (1) IT985878B (cs)
NL (1) NL7206376A (cs)
SE (1) SE391403B (cs)
ZA (1) ZA732198B (cs)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512384C2 (de) * 1975-03-21 1986-07-31 Geometric Data Corp., Wayne, Pa. Feinfokussiereinrichtung für das Objektiv eines optischen Instrumentes
FR2321711A1 (fr) * 1975-08-19 1977-03-18 Thomson Brandt Dispositif optique a mise au point automatique et lecteur optique comportant un tel dispositif
FR2330027A1 (fr) * 1975-10-28 1977-05-27 Thomson Brandt Dispositif de focalisation a vergence variable et lecteur optique comportant un tel dispositif
NL7600479A (nl) * 1976-01-19 1977-07-21 Philips Nv Automatisch optisch focusseersysteem.
US4918678A (en) * 1977-12-12 1990-04-17 Dolby Ray Milton Disc reproducing system for compensating mechanical imperfections
FR2425085A1 (fr) * 1978-05-05 1979-11-30 Quantel Sa Objectif a longueur focale variable
DE2915313A1 (de) * 1979-04-14 1980-10-23 Ibm Deutschland Piezoelektrische antriebsanordnung, insbesondere fuer fokussiersysteme
US4445209A (en) * 1979-08-27 1984-04-24 Discovision Associates Dithered focusing systems
JPS5769535A (en) * 1980-10-15 1982-04-28 Hitachi Ltd Optical information processor
DE3238108A1 (de) * 1982-10-14 1984-04-19 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Adaptives optisches system
GB8827297D0 (en) * 1988-11-23 1988-12-29 Sira Ltd Inspection apparatus
JPH03194526A (ja) * 1989-12-25 1991-08-26 Olympus Optical Co Ltd 実像式ファインダー光学系
US5621568A (en) * 1991-05-17 1997-04-15 Asahi Kogaku Kogyo Kabushiki Kaisha Device for adjusting the diopter setting of a finder assembly
US6061175A (en) * 1998-06-03 2000-05-09 Watters; George M. Multi-focal-ratio reflector telescopes
CN1295696C (zh) * 2004-12-09 2007-01-17 中国科学院上海光学精密机械研究所 位相型横向超分辨共焦系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE16757E (en) * 1922-10-31 1927-10-04 knight
US2410502A (en) * 1940-04-06 1946-11-05 Bendix Aviat Corp Aircraft control apparatus
US3073215A (en) * 1959-07-06 1963-01-15 Cons Electrodynamics Corp Optical recording system
US3514776A (en) * 1968-05-27 1970-05-26 United Aircraft Corp Mirror device

Also Published As

Publication number Publication date
DK134208C (cs) 1977-02-28
DE2323586A1 (de) 1973-11-22
JPS4950952A (cs) 1974-05-17
BE799334A (fr) 1973-11-09
NL7206376A (cs) 1973-11-13
SE391403B (sv) 1977-02-14
AT323819B (de) 1975-07-25
IT985878B (it) 1974-12-20
AU5529873A (en) 1974-11-07
GB1434060A (en) 1976-04-28
JPS5548366B2 (cs) 1980-12-05
DE2323586B2 (cs) 1979-08-30
CA984190A (en) 1976-02-24
DK134208B (da) 1976-09-27
US3876875A (en) 1975-04-08
FR2184344A5 (cs) 1973-12-21
DE2323586C3 (de) 1980-05-14
ES414578A1 (es) 1976-06-01
CH565381A5 (cs) 1975-08-15

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