GB2070794B - Automatic lens focusing system - Google Patents

Automatic lens focusing system

Info

Publication number
GB2070794B
GB2070794B GB8106595A GB8106595A GB2070794B GB 2070794 B GB2070794 B GB 2070794B GB 8106595 A GB8106595 A GB 8106595A GB 8106595 A GB8106595 A GB 8106595A GB 2070794 B GB2070794 B GB 2070794B
Authority
GB
United Kingdom
Prior art keywords
focusing system
lens focusing
automatic lens
automatic
lens
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
GB8106595A
Other versions
GB2070794A (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 GB2070794A publication Critical patent/GB2070794A/en
Application granted granted Critical
Publication of GB2070794B publication Critical patent/GB2070794B/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
GB8106595A 1980-03-03 1981-03-03 Automatic lens focusing system Expired GB2070794B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12682480A 1980-03-03 1980-03-03

Publications (2)

Publication Number Publication Date
GB2070794A GB2070794A (en) 1981-09-09
GB2070794B true GB2070794B (en) 1984-01-11

Family

ID=22426878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8106595A Expired GB2070794B (en) 1980-03-03 1981-03-03 Automatic lens focusing system

Country Status (5)

Country Link
JP (1) JPS56133722A (en)
CA (1) CA1151929A (en)
DE (1) DE3107945A1 (en)
FR (1) FR2477292A1 (en)
GB (1) GB2070794B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598989A (en) * 1982-12-23 1986-07-08 Konishiroku Photo Industry Co. Ltd. Camera
JPH0545057Y2 (en) * 1986-03-17 1993-11-17
GB2196134B (en) * 1986-09-30 1990-12-19 Canon Kk Camera having auto focus apparatus
DE3912165A1 (en) * 1989-04-13 1989-09-28 Christian Dipl Ing Bock Supplementary control for autofocus systems

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641889A (en) * 1970-09-02 1972-02-15 Polaroid Corp Exposure control system
AT329375B (en) * 1974-05-07 1976-05-10 Eumig CAMERA
JPS5114891A (en) * 1974-07-27 1976-02-05 Toyota Motor Co Ltd Shokubaino seizoho
US3975744A (en) * 1974-08-05 1976-08-17 Polaroid Corporation Automatic exposure control system
DE2755368A1 (en) * 1977-12-12 1979-06-13 Rollei Werke Franke Heidecke PHOTOGRAPHIC OR KINEMATOGRAPHIC CAMERA WITH A DEVICE FOR ASSIGNING AND DISPLAYING THE DEPTH OF FOCUS AND LENS SETTINGS
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
DD136898A1 (en) * 1978-06-19 1979-08-01 Hans Jehmlich CIRCUIT ARRANGEMENT FOR PHOTOGRAPHIC CAMERAS
JPS5548737A (en) * 1978-10-02 1980-04-08 Konishiroku Photo Ind Co Ltd Photoelectrically focus detecting device mounted camera
US4178087A (en) * 1978-10-02 1979-12-11 Polaroid Corporation Autofocus movie camera having focus correction means

Also Published As

Publication number Publication date
CA1151929A (en) 1983-08-16
DE3107945A1 (en) 1981-12-24
FR2477292B1 (en) 1984-04-27
JPS56133722A (en) 1981-10-20
FR2477292A1 (en) 1981-09-04
JPS6364761B2 (en) 1988-12-13
GB2070794A (en) 1981-09-09

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Legal Events

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