FR2251017B3 - - Google Patents

Info

Publication number
FR2251017B3
FR2251017B3 FR7437471A FR7437471A FR2251017B3 FR 2251017 B3 FR2251017 B3 FR 2251017B3 FR 7437471 A FR7437471 A FR 7437471A FR 7437471 A FR7437471 A FR 7437471A FR 2251017 B3 FR2251017 B3 FR 2251017B3
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
FR7437471A
Other versions
FR2251017A1 (fr
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 FR2251017A1 publication Critical patent/FR2251017A1/fr
Application granted granted Critical
Publication of FR2251017B3 publication Critical patent/FR2251017B3/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28Systems for automatic generation of focusing signals
    • G02B7/36Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G02B7/365Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals by analysis of the spatial frequency components of the image

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Studio Devices (AREA)
  • Focusing (AREA)
  • Viewfinders (AREA)
FR7437471A 1973-11-14 1974-11-13 Expired FR2251017B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2356757A DE2356757C2 (de) 1973-11-14 1973-11-14 Einrichtung zur Bestimmung der relativen Lage der Ebene maximaler Amplitude einer Ortsfrequenz

Publications (2)

Publication Number Publication Date
FR2251017A1 FR2251017A1 (fr) 1975-06-06
FR2251017B3 true FR2251017B3 (fr) 1977-08-12

Family

ID=5898037

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7437471A Expired FR2251017B3 (fr) 1973-11-14 1974-11-13

Country Status (7)

Country Link
US (1) US3953728A (fr)
JP (1) JPS6365923B2 (fr)
AT (1) AT365786B (fr)
CH (1) CH596562A5 (fr)
DE (1) DE2356757C2 (fr)
FR (1) FR2251017B3 (fr)
GB (1) GB1484877A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703290A1 (de) * 1977-01-27 1978-08-03 Leitz Ernst Gmbh Elektro-optische fokussiereinrichtung fuer fotografische kameras
DE2731192C2 (de) * 1977-07-09 1985-05-15 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Spiegelreflexkamera mit Pentaprisma und elektronischem Entfernungsmesser
DE2837555A1 (de) * 1978-08-29 1980-03-20 Leitz Ernst Gmbh Elektronische scharfstelleinrichtung
DD150951A1 (de) * 1980-05-16 1981-09-23 Gottfried Koenig Anordnung zur automatischen scharfeinstellung optischer systeme
DE3047184A1 (de) * 1980-12-15 1982-07-22 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Spiegelreflexkamera mit elektronischem entfernungsmesser
DE3151289A1 (de) * 1981-12-24 1983-07-07 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Spiegelreflexkamera mit elektronischem entfernungsmesser
DE3209908A1 (de) * 1981-12-24 1983-09-22 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Spiegelreflexkamera mit elektronischem entfernungsmesser
DD234340A3 (de) * 1984-05-02 1986-04-02 Zeiss Jena Veb Carl Automatische fokussiereinrichtung
JP2927047B2 (ja) * 1991-05-02 1999-07-28 キヤノン株式会社 焦点検出装置
CN100422842C (zh) * 2005-03-16 2008-10-01 亚洲光学股份有限公司 辅助对焦方法
CN104121990B (zh) * 2014-07-22 2016-05-11 中国科学院上海光学精密机械研究所 基于随机光栅的压缩感知宽波段高光谱成像系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398665A (en) * 1965-10-24 1968-08-27 Bell & Howell Co Lenticular screen autofocus system
GB1249302A (en) * 1968-01-16 1971-10-13 Secr Defence Improvements in or relating to optical beam splitter devices and apparatus
US3610934A (en) * 1969-08-22 1971-10-05 Century Geophysical Corp Automatic focusing system utilizing means for alternately directing light over two paths having slightly different lengths
JPS499372B1 (fr) * 1969-11-15 1974-03-04
US3571598A (en) * 1969-12-08 1971-03-23 Mc Donnell Douglas Corp Automatic focusing means using an analog signal correlator
US3798660A (en) * 1971-10-11 1974-03-19 Canon Kk Automatic focusing device for cameras
JPS5539809B2 (fr) * 1971-10-29 1980-10-14
DE2156617C3 (de) * 1971-11-15 1980-08-21 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zur Bestimmung der Lage der Ebene maximaler Amplitude einer Ortsfrequenz, beispielsweise bei einem Entfernungsmesser
JPS5618928B2 (fr) * 1971-12-29 1981-05-02

Also Published As

Publication number Publication date
AT365786B (de) 1982-02-10
DE2356757A1 (de) 1975-05-22
US3953728A (en) 1976-04-27
GB1484877A (en) 1977-09-08
DE2356757C2 (de) 1982-04-08
JPS5081331A (fr) 1975-07-02
JPS6365923B2 (fr) 1988-12-19
ATA833174A (de) 1981-06-15
FR2251017A1 (fr) 1975-06-06
CH596562A5 (fr) 1978-03-15

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