FR2426272B1 - METHOD AND DEVICE FOR PERFORMING THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLANE - Google Patents

METHOD AND DEVICE FOR PERFORMING THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLANE

Info

Publication number
FR2426272B1
FR2426272B1 FR7912431A FR7912431A FR2426272B1 FR 2426272 B1 FR2426272 B1 FR 2426272B1 FR 7912431 A FR7912431 A FR 7912431A FR 7912431 A FR7912431 A FR 7912431A FR 2426272 B1 FR2426272 B1 FR 2426272B1
Authority
FR
France
Prior art keywords
automatic
image
semi
image plane
automatic focusing
Prior art date
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
FR7912431A
Other languages
French (fr)
Other versions
FR2426272A1 (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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2426272A1 publication Critical patent/FR2426272A1/en
Application granted granted Critical
Publication of FR2426272B1 publication Critical patent/FR2426272B1/en
Expired 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
    • G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
    • G02B7/343—Systems for automatic generation of focusing signals using different areas in a pupil plane using light beam separating prisms
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Studio Devices (AREA)
  • Measurement Of Optical Distance (AREA)
FR7912431A 1978-05-18 1979-05-16 METHOD AND DEVICE FOR PERFORMING THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLANE Expired FR2426272B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782821722 DE2821722C2 (en) 1978-05-18 1978-05-18 Device for automatic or semi-automatic focusing of the image of an object on an image plane

Publications (2)

Publication Number Publication Date
FR2426272A1 FR2426272A1 (en) 1979-12-14
FR2426272B1 true FR2426272B1 (en) 1985-12-27

Family

ID=6039644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912431A Expired FR2426272B1 (en) 1978-05-18 1979-05-16 METHOD AND DEVICE FOR PERFORMING THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLANE

Country Status (4)

Country Link
JP (1) JPS54153029A (en)
DE (1) DE2821722C2 (en)
FR (1) FR2426272B1 (en)
GB (1) GB2021894B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414470A (en) * 1979-02-08 1983-11-08 Ricoh Company, Ltd. Pupil divisional focusing position detection apparatus using lenticula lens
DE3050691C2 (en) * 1979-02-09 1984-09-27 Asahi Kogaku Kogyo K.K., Tokio/Tokyo Focusing determination device of a camera with a device for determining the average lighting of an object to be photographed
JPS5788415A (en) * 1980-11-21 1982-06-02 Mamiya Koki Kk Automatic focusing control device
GB2195214B (en) * 1980-12-10 1988-10-26 Emi Ltd Automatic focussing system for an optical system
JPS5843409A (en) * 1981-09-10 1983-03-14 Asahi Optical Co Ltd Detection of focusing position
JPS5933409A (en) * 1982-08-19 1984-02-23 Olympus Optical Co Ltd Focusing detector
DD217621A1 (en) * 1983-07-20 1985-01-16 Univ Schiller Jena DEVICE FOR THE FOTOMETRIC STRUCTURE ORDER IDENTIFICATION WITH A PHOTO MEMPARATOR ARRAY

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840089A (en) * 1971-09-26 1973-06-12
CH553421A (en) * 1971-11-15 1974-08-30 Leitz Ernst Gmbh DEVICE FOR INDEPENDENT FOCUSING.
DE2156617C3 (en) * 1971-11-15 1980-08-21 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Device for determining the position of the plane of maximum amplitude of a spatial frequency, for example in the case of a range finder
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
JPS52110032A (en) * 1976-03-12 1977-09-14 Canon Inc Detector for focusing
JPS5914723B2 (en) * 1976-05-22 1984-04-05 旭光学工業株式会社 Focus detection device for single-lens reflex camera
JPS6044643B2 (en) * 1977-03-18 1985-10-04 旭光学工業株式会社 focus detection device
JPS5593325A (en) * 1979-01-09 1980-07-15 Sharp Corp Precharge circuit of mos transistor

Also Published As

Publication number Publication date
DE2821722C2 (en) 1981-09-17
GB2021894B (en) 1982-10-27
FR2426272A1 (en) 1979-12-14
JPS54153029A (en) 1979-12-01
DE2821722A1 (en) 1979-11-22
GB2021894A (en) 1979-12-05

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Legal Events

Date Code Title Description
ST Notification of lapse