IT1112710B - Sistema di messa a fuoco automatica per macchine da ripresa cinematografiche - Google Patents

Sistema di messa a fuoco automatica per macchine da ripresa cinematografiche

Info

Publication number
IT1112710B
IT1112710B IT22114/79A IT2211479A IT1112710B IT 1112710 B IT1112710 B IT 1112710B IT 22114/79 A IT22114/79 A IT 22114/79A IT 2211479 A IT2211479 A IT 2211479A IT 1112710 B IT1112710 B IT 1112710B
Authority
IT
Italy
Prior art keywords
automatic focusing
focusing system
shooting machines
cinematographic
cinematographic shooting
Prior art date
Application number
IT22114/79A
Other languages
English (en)
Other versions
IT7922114A0 (it
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 IT7922114A0 publication Critical patent/IT7922114A0/it
Application granted granted Critical
Publication of IT1112710B publication Critical patent/IT1112710B/it

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)
IT22114/79A 1978-04-25 1979-04-24 Sistema di messa a fuoco automatica per macchine da ripresa cinematografiche IT1112710B (it)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IT7922114A0 IT7922114A0 (it) 1979-04-24
IT1112710B true IT1112710B (it) 1986-01-20

Family

ID=25411561

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22114/79A IT1112710B (it) 1978-04-25 1979-04-24 Sistema di messa a fuoco automatica per macchine da ripresa cinematografiche

Country Status (9)

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

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 (ja) * 1981-07-06 1983-01-14 Fuji Photo Optical Co Ltd 多点測光によるオ−トフオ−カス装置
JPS58198009A (ja) * 1982-05-14 1983-11-17 West Electric Co Ltd 超音波オ−トフオ−カス装置
JPS60135712U (ja) * 1984-02-20 1985-09-09 三洋電機株式会社 自動焦点カメラ
JPS60214320A (ja) * 1984-04-11 1985-10-26 Kowa Co 自動焦点調節装置
GB2161947B (en) * 1984-06-08 1988-06-29 Konishiroku Photo Ind Automatic focusing camera
JPS6127107U (ja) * 1984-07-23 1986-02-18 ライトロン株式会社 オ−トフオ−カス装置
JPH0224421A (ja) * 1988-07-13 1990-01-26 Sadajiro Amiya 擁壁コンクリートブロック及び擁壁の成形方法
JPH0430024A (ja) * 1990-05-25 1992-02-03 Sekisui House Ltd プレキャストコンクリート製地下室

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 (de) * 1975-05-22 1976-12-09 Walter Landsrath Automatischer entfernungsmesser fuer optische systeme
US4078171A (en) * 1976-06-14 1978-03-07 Honeywell Inc. Digital auto focus

Also Published As

Publication number Publication date
AU4628679A (en) 1979-11-01
IT7922114A0 (it) 1979-04-24
CH646797A5 (de) 1984-12-14
AU528360B2 (en) 1983-04-28
AT370886B (de) 1983-05-10
FR2424556B1 (fr) 1986-01-10
GB2019595A (en) 1979-10-31
ATA309979A (de) 1982-09-15
DE2916569C2 (it) 1990-11-08
JPS54158226A (en) 1979-12-13
FR2424556A1 (fr) 1979-11-23
CA1124125A (en) 1982-05-25
GB2019595B (en) 1982-09-29
DE2916569A1 (de) 1979-11-08
JPS6226449B2 (it) 1987-06-09

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