CH548039A - DEVICE FOR HIGH-CONTRAST FOCUS ADJUSTMENT OF OPTICAL SYSTEMS IN PHOTOGRAPHIC CAMERAS. - Google Patents

DEVICE FOR HIGH-CONTRAST FOCUS ADJUSTMENT OF OPTICAL SYSTEMS IN PHOTOGRAPHIC CAMERAS.

Info

Publication number
CH548039A
CH548039A CH748471A CH748471A CH548039A CH 548039 A CH548039 A CH 548039A CH 748471 A CH748471 A CH 748471A CH 748471 A CH748471 A CH 748471A CH 548039 A CH548039 A CH 548039A
Authority
CH
Switzerland
Prior art keywords
optical systems
focus adjustment
photographic cameras
contrast focus
contrast
Prior art date
Application number
CH748471A
Other languages
German (de)
Original Assignee
Pentacon Dresden Veb
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 Pentacon Dresden Veb filed Critical Pentacon Dresden Veb
Publication of CH548039A publication Critical patent/CH548039A/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Focusing (AREA)
CH748471A 1970-06-17 1971-05-21 DEVICE FOR HIGH-CONTRAST FOCUS ADJUSTMENT OF OPTICAL SYSTEMS IN PHOTOGRAPHIC CAMERAS. CH548039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD14820270 1970-06-17

Publications (1)

Publication Number Publication Date
CH548039A true CH548039A (en) 1974-04-11

Family

ID=5482623

Family Applications (1)

Application Number Title Priority Date Filing Date
CH748471A CH548039A (en) 1970-06-17 1971-05-21 DEVICE FOR HIGH-CONTRAST FOCUS ADJUSTMENT OF OPTICAL SYSTEMS IN PHOTOGRAPHIC CAMERAS.

Country Status (5)

Country Link
AT (1) AT321101B (en)
CH (1) CH548039A (en)
DE (1) DE2062173C3 (en)
FR (1) FR2096254A5 (en)
SE (1) SE370131B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52110033A (en) * 1976-03-12 1977-09-14 Canon Inc Single lens reflex camera

Also Published As

Publication number Publication date
DE2062173A1 (en) 1972-03-30
SE370131B (en) 1974-09-30
AT321101B (en) 1975-03-10
DE2062173B2 (en) 1973-10-25
DE2062173C3 (en) 1974-05-22
FR2096254A5 (en) 1972-02-11

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Legal Events

Date Code Title Description
PL Patent ceased