DE2047880A1 - - Google Patents

Info

Publication number
DE2047880A1
DE2047880A1 DE19702047880 DE2047880A DE2047880A1 DE 2047880 A1 DE2047880 A1 DE 2047880A1 DE 19702047880 DE19702047880 DE 19702047880 DE 2047880 A DE2047880 A DE 2047880A DE 2047880 A1 DE2047880 A1 DE 2047880A1
Authority
DE
Germany
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.)
Pending
Application number
DE19702047880
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
Priority to JP7706669A priority Critical patent/JPS4835487B1/ja
Application filed filed Critical
Publication of DE2047880A1 publication Critical patent/DE2047880A1/de
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28Systems for automatic generation of focusing signals
    • G02B7/36Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/53Means for automatic focusing, e.g. to compensate thermal effects
DE19702047880 1969-09-29 1970-09-29 Pending DE2047880A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7706669A JPS4835487B1 (de) 1969-09-29 1969-09-29

Publications (1)

Publication Number Publication Date
DE2047880A1 true DE2047880A1 (de) 1971-04-08

Family

ID=13623406

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702047880 Pending DE2047880A1 (de) 1969-09-29 1970-09-29

Country Status (4)

Country Link
US (1) US3720151A (de)
JP (1) JPS4835487B1 (de)
DE (1) DE2047880A1 (de)
GB (1) GB1329864A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950764A (en) * 1971-10-08 1976-04-13 Canon Kabushiki Kaisha System for automatically focusing an object in a camera or the like
JPS5635844B2 (de) * 1972-12-07 1981-08-20

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT248236B (de) * 1960-10-07 1966-07-25 Philippa Durst Vorrichtung zum selbsttätigen Scharfeinstellen eines Aufnahmeobjectivs
US3479943A (en) * 1962-11-27 1969-11-25 Canon Kk Automatic focussing device for photographic cameras
US3495913A (en) * 1965-06-07 1970-02-17 Fairchild Camera Instr Co Focal plane determining system
US3493764A (en) * 1967-11-09 1970-02-03 Logetronics Inc Automatic focusing apparatus using a diffusing element
US3610733A (en) * 1970-08-31 1971-10-05 Frank G Back Varifocal lens system and actuating mechanism

Also Published As

Publication number Publication date
US3720151A (en) 1973-03-13
JPS4835487B1 (de) 1973-10-29
GB1329864A (en) 1973-09-12

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