FR2366593A1 - AUTOMATIC FOCUSING CAMERA - Google Patents

AUTOMATIC FOCUSING CAMERA

Info

Publication number
FR2366593A1
FR2366593A1 FR7728415A FR7728415A FR2366593A1 FR 2366593 A1 FR2366593 A1 FR 2366593A1 FR 7728415 A FR7728415 A FR 7728415A FR 7728415 A FR7728415 A FR 7728415A FR 2366593 A1 FR2366593 A1 FR 2366593A1
Authority
FR
France
Prior art keywords
subject
distance
focusing
camera
pulses
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.)
Granted
Application number
FR7728415A
Other languages
French (fr)
Other versions
FR2366593B1 (en
Inventor
Edwin K Shenk
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 FR2366593A1 publication Critical patent/FR2366593A1/en
Application granted granted Critical
Publication of FR2366593B1 publication Critical patent/FR2366593B1/fr
Granted 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)

Abstract

Appareil de prise de vues possédant des moyens variables pour mettre au point des rayons porteurs d'image depuis un sujet sur le plan focal de l'appareil de prise de vues, la variation spécifique desdits moyens de mise au point à laquelle un sujet est mis au point étant une fonction non linéaire prédéterminée de la distance du sujet, et possédant des moyens télémétriques pour engendrer un paramètre de distance représentant la distance du sujet Il comprend des moyens répondant audit paramètre de distance pour engendrer un train d'impulsions dont le nombre représente la variation spécifique desdits moyens de mise au point à laquelle ledit sujet est mis au point et des moyens pour faire varier lesdits moyens de mise au point en fonction du nombre total d'impulsions dans ledit train d'impulsions. Application notamment aux appareils de prise de vues cinématographiques.A camera having variable means for focusing image-bearing rays from a subject on the focal plane of the camera, the specific variation of said focusing means at which a subject is brought into focus at the point being a predetermined non-linear function of the distance from the subject, and having telemetry means for generating a distance parameter representing the distance to the subject It comprises means responding to said distance parameter for generating a train of pulses the number of which represents the specific variation of said focusing means to which said subject is in focus and means for varying said focusing means depending on the total number of pulses in said pulse train. Application in particular to cinematographic cameras.

FR7728415A 1976-10-04 1977-09-21 AUTOMATIC FOCUSING CAMERA Granted FR2366593A1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2366593A1 true FR2366593A1 (en) 1978-04-28
FR2366593B1 FR2366593B1 (en) 1982-12-03

Family

ID=24930378

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7728415A Granted FR2366593A1 (en) 1976-10-04 1977-09-21 AUTOMATIC FOCUSING CAMERA

Country Status (9)

Country Link
JP (2) JPS5348523A (en)
AT (1) AT368638B (en)
AU (1) AU511120B2 (en)
CA (1) CA1099554A (en)
CH (2) CH627285A5 (en)
DE (1) DE2744093C3 (en)
FR (1) FR2366593A1 (en)
GB (2) GB1591338A (en)
IT (1) IT1110180B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2413679A1 (en) * 1977-12-30 1979-07-27 Polaroid Corp SHOOTING DEVICE EQUIPPED WITH MEANS TO AVOID BAD FOCUSING AND HAVING A UNIDIRECTIONAL AUTOMATIC FOCUSING SYSTEM
FR2413680A1 (en) * 1977-12-30 1979-07-27 Polaroid Corp SHOOTING DEVICE INCLUDING SEQUENTIALIZATION AND REFERENCE MEANS ACTUATED BY MOVEMENT OF THE LENS AND HAVING UNIDIRECTIONAL AUTOMATIC FOCUS
FR2445974A1 (en) * 1979-01-02 1980-08-01 Polaroid Corp AUTOMATIC FOCUSING CINEMATOGRAPHIC CAMERA AND PULSING ELECTRIC DRIVES
FR2445973A1 (en) * 1979-01-02 1980-08-01 Polaroid Corp CINEMATOGRAPHIC CAMERA WITH IMPROVED AUTOMATIC FOCUSING
FR2483634A1 (en) * 1980-06-03 1981-12-04 Polaroid Corp PHOTOGRAPHIC CAMERA

Families Citing this family (17)

* 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
DE2801251A1 (en) * 1978-01-12 1979-07-19 Agfa Gevaert Ag DEVICE FOR FOCUSING THE LENS OF A PHOTOGRAPHIC OR KINEMATOGRAPHIC CAMERA
US4182563A (en) * 1978-04-20 1980-01-08 Polaroid Corporation Focus control system for interchangeable adjustable focus lenses
GB2020051B (en) * 1978-04-25 1982-06-30 Polaroid Corp Cameras with rangefinders
FR2424559A1 (en) * 1978-04-25 1979-11-23 Polaroid Corp FOCUS CONTROL MODES SELECTION DEVICE, MANUAL OR AUTOMATIC
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
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
US5099263A (en) * 1984-11-10 1992-03-24 Minolta Camera Kabushiki Kaisha Variable focal length camera
JPS63183267A (en) * 1987-01-21 1988-07-28 Mazda Motor Corp Swirl chamber type diesel engine
US5130216A (en) * 1988-09-22 1992-07-14 Canon Kabushiki Kaisha Photosensitive member for electrophotography
JP2567086B2 (en) * 1989-03-15 1996-12-25 キヤノン株式会社 Electrophotographic photoreceptor
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 (en) * 1992-07-17 1994-02-25 Namiki Precision Jewel Co Ltd Winding of slotless armature
US6335133B1 (en) * 1999-03-19 2002-01-01 Canon Kabushiki Kaisha Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
CN101917944B (en) 2007-08-21 2014-11-19 斯尔替克美学股份有限公司 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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2413679A1 (en) * 1977-12-30 1979-07-27 Polaroid Corp SHOOTING DEVICE EQUIPPED WITH MEANS TO AVOID BAD FOCUSING AND HAVING A UNIDIRECTIONAL AUTOMATIC FOCUSING SYSTEM
FR2413680A1 (en) * 1977-12-30 1979-07-27 Polaroid Corp SHOOTING DEVICE INCLUDING SEQUENTIALIZATION AND REFERENCE MEANS ACTUATED BY MOVEMENT OF THE LENS AND HAVING UNIDIRECTIONAL AUTOMATIC FOCUS
FR2445974A1 (en) * 1979-01-02 1980-08-01 Polaroid Corp AUTOMATIC FOCUSING CINEMATOGRAPHIC CAMERA AND PULSING ELECTRIC DRIVES
FR2445973A1 (en) * 1979-01-02 1980-08-01 Polaroid Corp CINEMATOGRAPHIC CAMERA WITH IMPROVED AUTOMATIC FOCUSING
FR2483634A1 (en) * 1980-06-03 1981-12-04 Polaroid Corp PHOTOGRAPHIC CAMERA

Also Published As

Publication number Publication date
IT1110180B (en) 1985-12-23
ATA706377A (en) 1982-02-15
JPS6155099B2 (en) 1986-11-26
AU511120B2 (en) 1980-07-31
DE2744093B2 (en) 1979-10-04
JPS58193528A (en) 1983-11-11
CH627285A5 (en) 1981-12-31
GB1591338A (en) 1981-06-17
CA1099554A (en) 1981-04-21
DE2744093A1 (en) 1978-04-06
JPS5348523A (en) 1978-05-02
DE2744093C3 (en) 1980-06-26
CH646798A5 (en) 1984-12-14
GB1591340A (en) 1981-06-17
FR2366593B1 (en) 1982-12-03
AU2828677A (en) 1979-03-01
AT368638B (en) 1982-10-25
JPS6261933B2 (en) 1987-12-24

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Legal Events

Date Code Title Description
ST Notification of lapse