FR2435054B1 - - Google Patents

Info

Publication number
FR2435054B1
FR2435054B1 FR7921448A FR7921448A FR2435054B1 FR 2435054 B1 FR2435054 B1 FR 2435054B1 FR 7921448 A FR7921448 A FR 7921448A FR 7921448 A FR7921448 A FR 7921448A FR 2435054 B1 FR2435054 B1 FR 2435054B1
Authority
FR
France
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
Application number
FR7921448A
Other languages
French (fr)
Other versions
FR2435054A1 (en
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2435054A1 publication Critical patent/FR2435054A1/en
Application granted granted Critical
Publication of FR2435054B1 publication Critical patent/FR2435054B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
FR7921448A 1978-09-01 1979-08-27 FOCUS DETECTION DEVICE FOR PHOTOGRAPHIC APPARATUS Granted FR2435054A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10735478A JPS5535317A (en) 1978-09-01 1978-09-01 Focus detector of camera

Publications (2)

Publication Number Publication Date
FR2435054A1 FR2435054A1 (en) 1980-03-28
FR2435054B1 true FR2435054B1 (en) 1983-03-04

Family

ID=14456927

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7921448A Granted FR2435054A1 (en) 1978-09-01 1979-08-27 FOCUS DETECTION DEVICE FOR PHOTOGRAPHIC APPARATUS

Country Status (4)

Country Link
JP (1) JPS5535317A (en)
DE (1) DE2935303C2 (en)
FR (1) FR2435054A1 (en)
GB (1) GB2030415B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5759107A (en) * 1980-09-26 1982-04-09 Hitachi Ltd Method and device for measuring plate thickness
GB2195214B (en) * 1980-12-10 1988-10-26 Emi Ltd Automatic focussing system for an optical system
JPS58189606A (en) * 1982-04-30 1983-11-05 Fuji Electric Co Ltd Automatic focus adjusting device of optical instrument

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906219A (en) * 1973-10-09 1975-09-16 Honeywell Inc Focus detecting apparatus
FR2338504A1 (en) * 1976-01-15 1977-08-12 Leitz Ernst Gmbh Auto focus with spatial filtering - has pairwise interrogation of photoelectric diodes and concentrator for optical fluxes
US4132888A (en) * 1976-03-17 1979-01-02 Toshihiro Kondo Device for automatically focusing image
JPS5529878A (en) * 1978-08-24 1980-03-03 Asahi Optical Co Ltd Focus detector of camera

Also Published As

Publication number Publication date
FR2435054A1 (en) 1980-03-28
GB2030415A (en) 1980-04-02
DE2935303C2 (en) 1982-05-19
GB2030415B (en) 1983-03-09
DE2935303A1 (en) 1980-03-13
JPS5535317A (en) 1980-03-12

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse