ATA309979A - SYSTEM FOR AUTOMATICALLY FOCUSING A CAMERA - Google Patents

SYSTEM FOR AUTOMATICALLY FOCUSING A CAMERA

Info

Publication number
ATA309979A
ATA309979A AT793099A AT309979A ATA309979A AT A309979 A ATA309979 A AT A309979A AT 793099 A AT793099 A AT 793099A AT 309979 A AT309979 A AT 309979A AT A309979 A ATA309979 A AT A309979A
Authority
AT
Austria
Prior art keywords
camera
automatically focusing
focusing
automatically
Prior art date
Application number
AT793099A
Other languages
German (de)
Other versions
AT370886B (en
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Publication of ATA309979A publication Critical patent/ATA309979A/en
Application granted granted Critical
Publication of AT370886B publication Critical patent/AT370886B/en

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
    • G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Lens Barrels (AREA)
AT0309979A 1978-04-25 1979-04-25 SYSTEM FOR AUTOMATICALLY FOCUSING A CAMERA AT370886B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89978578A 1978-04-25 1978-04-25

Publications (2)

Publication Number Publication Date
ATA309979A true ATA309979A (en) 1982-09-15
AT370886B AT370886B (en) 1983-05-10

Family

ID=25411561

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0309979A AT370886B (en) 1978-04-25 1979-04-25 SYSTEM FOR AUTOMATICALLY FOCUSING A CAMERA

Country Status (9)

Country Link
JP (1) JPS54158226A (en)
AT (1) AT370886B (en)
AU (1) AU528360B2 (en)
CA (1) CA1124125A (en)
CH (1) CH646797A5 (en)
DE (1) DE2916569A1 (en)
FR (1) FR2424556B1 (en)
GB (1) GB2019595B (en)
IT (1) IT1112710B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335942A (en) * 1979-10-26 1982-06-22 Canon Kabushiki Kaisha Camera provided with automatic focus detector
JPS5749907A (en) * 1980-09-09 1982-03-24 Ricoh Co Ltd Noise eliminating circuit and in-focus detecting circuit
JPS5772115A (en) * 1980-10-23 1982-05-06 Canon Inc Output stablizing circuit for focus detector
JPS57128307A (en) * 1981-02-03 1982-08-09 Nippon Kogaku Kk <Nikon> Automatic focus adjuster
JPS57169710A (en) * 1981-04-10 1982-10-19 West Electric Co Ltd Automatic focusing device
JPS587113A (en) * 1981-07-06 1983-01-14 Fuji Photo Optical Co Ltd Autofocusing device due to multipoint photometry
JPS58198009A (en) * 1982-05-14 1983-11-17 West Electric Co Ltd Ultrasonic auto-focusing device
JPS60135712U (en) * 1984-02-20 1985-09-09 三洋電機株式会社 auto focus camera
JPS60214320A (en) * 1984-04-11 1985-10-26 Kowa Co Automatic focus adjusting device
GB2161947B (en) * 1984-06-08 1988-06-29 Konishiroku Photo Ind Automatic focusing camera
JPS6127107U (en) * 1984-07-23 1986-02-18 ライトロン株式会社 auto focus device
JPH0224421A (en) * 1988-07-13 1990-01-26 Sadajiro Amiya Retaining wall concrete block and forming method thereof
JPH0430024A (en) * 1990-05-25 1992-02-03 Sekisui House Ltd precast concrete basement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010479A (en) * 1974-07-10 1977-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Focusing apparatus for optical systems
DE2522757A1 (en) * 1975-05-22 1976-12-09 Walter Landsrath Automatic rangefinder for cambers - using transmission time of ultrasound to measure object range
US4078171A (en) * 1976-06-14 1978-03-07 Honeywell Inc. Digital auto focus

Also Published As

Publication number Publication date
FR2424556A1 (en) 1979-11-23
AU528360B2 (en) 1983-04-28
AU4628679A (en) 1979-11-01
JPS6226449B2 (en) 1987-06-09
JPS54158226A (en) 1979-12-13
CH646797A5 (en) 1984-12-14
GB2019595B (en) 1982-09-29
DE2916569C2 (en) 1990-11-08
GB2019595A (en) 1979-10-31
AT370886B (en) 1983-05-10
IT7922114A0 (en) 1979-04-24
FR2424556B1 (en) 1986-01-10
IT1112710B (en) 1986-01-20
CA1124125A (en) 1982-05-25
DE2916569A1 (en) 1979-11-08

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Legal Events

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