FR2492544B1 - Dispositif pour la determination photoelectrique de la position d'au moins un plan de nettete d'une image - Google Patents

Dispositif pour la determination photoelectrique de la position d'au moins un plan de nettete d'une image

Info

Publication number
FR2492544B1
FR2492544B1 FR8118956A FR8118956A FR2492544B1 FR 2492544 B1 FR2492544 B1 FR 2492544B1 FR 8118956 A FR8118956 A FR 8118956A FR 8118956 A FR8118956 A FR 8118956A FR 2492544 B1 FR2492544 B1 FR 2492544B1
Authority
FR
France
Prior art keywords
image
sharp plane
photoelectric determination
photoelectric
determination
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
FR8118956A
Other languages
English (en)
Other versions
FR2492544A1 (fr
Inventor
Horst Schmidt
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
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 Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH
Publication of FR2492544A1 publication Critical patent/FR2492544A1/fr
Application granted granted Critical
Publication of FR2492544B1 publication Critical patent/FR2492544B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/32—Measuring distances in line of sight; Optical rangefinders by focusing the object, e.g. on a ground glass screen
    • 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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optics & Photonics (AREA)
  • Eye Examination Apparatus (AREA)
  • Measurement Of Optical Distance (AREA)
  • Lenses (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
FR8118956A 1980-10-18 1981-10-08 Dispositif pour la determination photoelectrique de la position d'au moins un plan de nettete d'une image Expired FR2492544B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803039425 DE3039425A1 (de) 1980-10-18 1980-10-18 Einrichtung zur fotoelektrischen bestimmung der lage mindestens einer schaerfenebene eines bildes

Publications (2)

Publication Number Publication Date
FR2492544A1 FR2492544A1 (fr) 1982-04-23
FR2492544B1 true FR2492544B1 (fr) 1986-05-16

Family

ID=6114700

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8118956A Expired FR2492544B1 (fr) 1980-10-18 1981-10-08 Dispositif pour la determination photoelectrique de la position d'au moins un plan de nettete d'une image

Country Status (6)

Country Link
US (1) US4465366A (fr)
DE (1) DE3039425A1 (fr)
FR (1) FR2492544B1 (fr)
GB (1) GB2086567B (fr)
NL (1) NL8104724A (fr)
SE (1) SE8106136L (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626103A (en) * 1984-03-29 1986-12-02 At&T Bell Laboratories Focus tracking system
FR2580087B1 (fr) * 1985-04-03 1988-12-02 Hispano Suiza Sa
US4688933A (en) * 1985-05-10 1987-08-25 The Laitram Corporation Electro-optical position determining system
US4856884A (en) * 1988-03-16 1989-08-15 The United States Of America As Represented By The Secretary Of The Air Force Dynamically matched optical filtering in a multiple telescope imaging system
JPH0718714B2 (ja) * 1988-05-10 1995-03-06 キヤノン株式会社 エンコーダー
US5280332A (en) * 1990-02-09 1994-01-18 Vx Optronics Method and apparatus for self-correcting, direct sensing coincidence sensor for optical rangefinders
US5149952A (en) * 1990-08-10 1992-09-22 Stanley Electric Corporation Optical gauging apparatus using dual beams and intermittent interruption
JPH0568196A (ja) * 1991-09-06 1993-03-19 Seiko Instr Inc ジヨイント変換相関器型測距・自動焦点装置およびその駆動方式
US5329347A (en) * 1992-09-16 1994-07-12 Varo Inc. Multifunction coaxial objective system for a rangefinder
DE4308714A1 (de) * 1993-03-18 1994-09-22 Linhof Praezisions Kamera Werk Gekuppelter Entfernungsmesser für fotografische Kameras
US7924434B2 (en) 2005-08-02 2011-04-12 Kla-Tencor Technologies Corp. Systems configured to generate output corresponding to defects on a specimen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1472454A (en) * 1973-06-18 1977-05-04 Leitz Ernst Gmbh Method for determining the position of a focussing plane
DE2454883C2 (de) * 1974-11-20 1984-01-05 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zur automatischen, fotoelektrischen Auswertung stereoskopischer Bilder
DE2460805C2 (de) * 1974-12-21 1983-01-27 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Optischer Entfernungsmesser
US3969019A (en) * 1975-04-07 1976-07-13 Nippon Kogaku K.K. Curvature measuring optical system in ophthalmometer
FR2309888A1 (fr) * 1975-04-30 1976-11-26 Thomson Brandt Dispositif optique de projection et lecteur optique comportant un tel dispositif
US4011445A (en) * 1975-12-16 1977-03-08 Hughes Aircraft Company Optical array active radar imaging technique
CA1050795A (fr) * 1975-12-23 1979-03-20 Byron E. Marcus Dispositif de diffusion pour compenser la sensibilite non uniforme de la cathode d'un photomultiplicateur

Also Published As

Publication number Publication date
FR2492544A1 (fr) 1982-04-23
GB2086567A (en) 1982-05-12
NL8104724A (nl) 1982-05-17
US4465366A (en) 1984-08-14
SE8106136L (sv) 1982-04-19
DE3039425A1 (de) 1982-05-19
GB2086567B (en) 1984-11-28

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Legal Events

Date Code Title Description
ST Notification of lapse