GB1591340A - Automatic focusing of a photographic camera - Google Patents

Automatic focusing of a photographic camera Download PDF

Info

Publication number
GB1591340A
GB1591340A GB604180A GB604180A GB1591340A GB 1591340 A GB1591340 A GB 1591340A GB 604180 A GB604180 A GB 604180A GB 604180 A GB604180 A GB 604180A GB 1591340 A GB1591340 A GB 1591340A
Authority
GB
United Kingdom
Prior art keywords
lens
range
counter
driving means
subject
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
GB604180A
Other languages
English (en)
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.)
Polaroid Corp
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 GB1591340A publication Critical patent/GB1591340A/en
Expired legal-status Critical Current

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)
  • Shutters For Cameras (AREA)
  • Lens Barrels (AREA)
GB604180A 1976-10-04 1977-09-26 Automatic focusing of a photographic camera Expired GB1591340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72928976A 1976-10-04 1976-10-04

Publications (1)

Publication Number Publication Date
GB1591340A true GB1591340A (en) 1981-06-17

Family

ID=24930378

Family Applications (2)

Application Number Title Priority Date Filing Date
GB604180A Expired GB1591340A (en) 1976-10-04 1977-09-26 Automatic focusing of a photographic camera
GB3997977A Expired GB1591338A (en) 1976-10-04 1977-09-26 Camera focusing

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3997977A Expired GB1591338A (en) 1976-10-04 1977-09-26 Camera focusing

Country Status (9)

Country Link
JP (2) JPS5348523A (enrdf_load_stackoverflow)
AT (1) AT368638B (enrdf_load_stackoverflow)
AU (1) AU511120B2 (enrdf_load_stackoverflow)
CA (1) CA1099554A (enrdf_load_stackoverflow)
CH (2) CH627285A5 (enrdf_load_stackoverflow)
DE (1) DE2744093C3 (enrdf_load_stackoverflow)
FR (1) FR2366593A1 (enrdf_load_stackoverflow)
GB (2) GB1591340A (enrdf_load_stackoverflow)
IT (1) IT1110180B (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5359419A (en) * 1976-11-10 1978-05-29 Mamiya Camera Automatic focusing device for camera
US4149792A (en) * 1977-12-30 1979-04-17 Polaroid Corporation Misfocus prevention means for cameras having unidirectional automatic focusing
GB2013353B (en) * 1977-12-30 1982-05-19 Polaroid Corp Focus control system for variable focus lenses
DE2801251A1 (de) * 1978-01-12 1979-07-19 Agfa Gevaert Ag Vorrichtung zur scharfeinstellung des objektivs einer fotografischen oder kinematografischen kamera
US4182563A (en) * 1978-04-20 1980-01-08 Polaroid Corporation Focus control system for interchangeable adjustable focus lenses
GB2019590B (en) * 1978-04-25 1982-07-28 Polaroid Corp Camera adapted for automatic and manual focusing
GB2020051B (en) * 1978-04-25 1982-06-30 Polaroid Corp Cameras with rangefinders
US4167316A (en) * 1978-06-26 1979-09-11 Polaroid Corporation Sonar controlled lens focus apparatus
US4178087A (en) * 1978-10-02 1979-12-11 Polaroid Corporation Autofocus movie camera having focus correction means
US4238143A (en) * 1979-01-02 1980-12-09 Polaroid Corporation Autofocus movie camera having pulsed terminal drive means
US4239354A (en) * 1979-01-02 1980-12-16 Polaroid Corporation Autofocus movie camera having improved focus response
JPS55115023A (en) * 1979-02-28 1980-09-04 Canon Inc Distance detector and focus control system utilizing this
JPS5642472A (en) * 1979-09-13 1981-04-20 Matsushita Electric Ind Co Ltd Automatic focusing unit of television camera
US4307952A (en) * 1980-06-03 1981-12-29 Polaroid Corporation Auto focus camera with electronic lens disc pawl release arrangement
US5099263A (en) * 1984-11-10 1992-03-24 Minolta Camera Kabushiki Kaisha Variable focal length camera
JPS63183267A (ja) * 1987-01-21 1988-07-28 Mazda Motor Corp 渦流室式デイ−ゼルエンジン
US5130216A (en) * 1988-09-22 1992-07-14 Canon Kabushiki Kaisha Photosensitive member for electrophotography
JP2567086B2 (ja) * 1989-03-15 1996-12-25 キヤノン株式会社 電子写真感光体
US5419993A (en) * 1991-11-01 1995-05-30 Canon Kabushiki Kaisha Polyamide, electrophotographic photosensitive member employing the polyamide, and electrophotographic apparatus, device unit and facsimile machine employing the member
JPH0654490A (ja) * 1992-07-17 1994-02-25 Namiki Precision Jewel Co Ltd スロットレス電機子の巻線方法
US6335133B1 (en) * 1999-03-19 2002-01-01 Canon Kabushiki Kaisha Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
WO2009026471A1 (en) 2007-08-21 2009-02-26 Zeltiq Aesthetics, Inc. Monitoring the cooling of subcutaneous lipid-rich cells, such as the cooling of adipose tissue

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945023A (en) * 1974-03-29 1976-03-16 Honeywell Inc. Auto-focus camera with solid state range finder

Also Published As

Publication number Publication date
FR2366593B1 (enrdf_load_stackoverflow) 1982-12-03
FR2366593A1 (fr) 1978-04-28
JPS6261933B2 (enrdf_load_stackoverflow) 1987-12-24
DE2744093A1 (de) 1978-04-06
DE2744093B2 (de) 1979-10-04
JPS6155099B2 (enrdf_load_stackoverflow) 1986-11-26
AT368638B (de) 1982-10-25
JPS58193528A (ja) 1983-11-11
AU511120B2 (en) 1980-07-31
JPS5348523A (en) 1978-05-02
AU2828677A (en) 1979-03-01
ATA706377A (de) 1982-02-15
IT1110180B (it) 1985-12-23
DE2744093C3 (de) 1980-06-26
CH646798A5 (en) 1984-12-14
CH627285A5 (en) 1981-12-31
GB1591338A (en) 1981-06-17
CA1099554A (en) 1981-04-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920926