AT280774B - Device for automatic focusing of optical devices - Google Patents

Device for automatic focusing of optical devices

Info

Publication number
AT280774B
AT280774B AT988766A AT988766A AT280774B AT 280774 B AT280774 B AT 280774B AT 988766 A AT988766 A AT 988766A AT 988766 A AT988766 A AT 988766A AT 280774 B AT280774 B AT 280774B
Authority
AT
Austria
Prior art keywords
optical devices
automatic focusing
focusing
automatic
optical
Prior art date
Application number
AT988766A
Other languages
German (de)
Original Assignee
Bell & Howell Co
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 claimed from US504520A external-priority patent/US3398665A/en
Application filed by Bell & Howell Co filed Critical Bell & Howell Co
Application granted granted Critical
Publication of AT280774B publication Critical patent/AT280774B/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Optics & Photonics (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Photovoltaic Devices (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
AT988766A 1965-10-24 1966-10-24 Device for automatic focusing of optical devices AT280774B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US504520A US3398665A (en) 1965-10-24 1965-10-24 Lenticular screen autofocus system
US57608166A 1966-08-30 1966-08-30

Publications (1)

Publication Number Publication Date
AT280774B true AT280774B (en) 1970-04-27

Family

ID=27054850

Family Applications (1)

Application Number Title Priority Date Filing Date
AT988766A AT280774B (en) 1965-10-24 1966-10-24 Device for automatic focusing of optical devices

Country Status (4)

Country Link
JP (1) JPS5211593B1 (en)
AT (1) AT280774B (en)
DE (1) DE1547182A1 (en)
GB (1) GB1142064A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436528C2 (en) * 1974-07-29 1982-11-25 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Electro-optical focusing device

Also Published As

Publication number Publication date
GB1142064A (en) 1969-02-05
JPS5211593B1 (en) 1977-03-31
DE1547182A1 (en) 1969-12-18

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