ATA520778A - Einen vorgegebenen kontrast simulierende ein- richtung in einer selbsttaetigen scharfein- stellvorrichtung - Google Patents

Einen vorgegebenen kontrast simulierende ein- richtung in einer selbsttaetigen scharfein- stellvorrichtung

Info

Publication number
ATA520778A
ATA520778A AT520778A AT520778A ATA520778A AT A520778 A ATA520778 A AT A520778A AT 520778 A AT520778 A AT 520778A AT 520778 A AT520778 A AT 520778A AT A520778 A ATA520778 A AT A520778A
Authority
AT
Austria
Prior art keywords
focus adjustment
automatic focus
simulating
adjustment device
preliminary contrast
Prior art date
Application number
AT520778A
Other languages
English (en)
Other versions
AT361297B (de
Original Assignee
Bell & Howell Japan
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 Bell & Howell Japan filed Critical Bell & Howell Japan
Publication of ATA520778A publication Critical patent/ATA520778A/de
Application granted granted Critical
Publication of AT361297B publication Critical patent/AT361297B/de

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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/305—Systems for automatic generation of focusing signals using parallactic triangle with a base line using a scanner

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
AT520778A 1977-07-18 1978-07-18 Einen vorgegebenen kontrast simulierende ein- richtung in einer selbsttaetigen scharfein- stellvorrichtung AT361297B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8497977A JPS5420726A (en) 1977-07-18 1977-07-18 Automatic focus adjusting device

Publications (2)

Publication Number Publication Date
ATA520778A true ATA520778A (de) 1980-07-15
AT361297B AT361297B (de) 1981-02-25

Family

ID=13845724

Family Applications (1)

Application Number Title Priority Date Filing Date
AT520778A AT361297B (de) 1977-07-18 1978-07-18 Einen vorgegebenen kontrast simulierende ein- richtung in einer selbsttaetigen scharfein- stellvorrichtung

Country Status (4)

Country Link
US (1) US4191882A (de)
JP (1) JPS5420726A (de)
AT (1) AT361297B (de)
GB (1) GB2001501B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541432A (en) * 1978-09-20 1980-03-24 Nippon Kogaku Kk <Nikon> Focus detector
AT384106B (de) * 1981-10-26 1987-10-12 Sony Corp Geraet zur bestimmung der entfernung zu einem gegenstand
US4474446A (en) * 1982-06-30 1984-10-02 Honeywell Inc. Focal sensor having optical low pass filter
JPS5964818A (ja) * 1982-10-05 1984-04-12 Konishiroku Photo Ind Co Ltd カメラ等のオ−トフオ−カス判断回路
JPH02124419A (ja) * 1988-05-07 1990-05-11 Ricoh Co Ltd 測距装置
JP3691124B2 (ja) * 1995-08-23 2005-08-31 フジノン株式会社 測距装置
GB0319677D0 (en) * 2003-08-21 2003-09-24 Canon Res Ct Europ Ltd Photographic apparatus for use in creating three-dimensional models

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5396828A (en) * 1977-02-03 1978-08-24 Bell & Howell Japan Automatic focal point adjusting device

Also Published As

Publication number Publication date
AT361297B (de) 1981-02-25
US4191882A (en) 1980-03-04
GB2001501B (en) 1982-09-29
JPS5420726A (en) 1979-02-16
GB2001501A (en) 1979-01-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee