FR2096254A5 - METHOD AND DEVICE FOR DEVELOPING OPTICAL SYSTEMS AS A FUNCTION OF CONTRAST IN OPTICAL INSTRUMENTS, ESPECIALLY IN PHOTOGRAPHIC DEVICES - Google Patents

METHOD AND DEVICE FOR DEVELOPING OPTICAL SYSTEMS AS A FUNCTION OF CONTRAST IN OPTICAL INSTRUMENTS, ESPECIALLY IN PHOTOGRAPHIC DEVICES

Info

Publication number
FR2096254A5
FR2096254A5 FR7121330A FR7121330A FR2096254A5 FR 2096254 A5 FR2096254 A5 FR 2096254A5 FR 7121330 A FR7121330 A FR 7121330A FR 7121330 A FR7121330 A FR 7121330A FR 2096254 A5 FR2096254 A5 FR 2096254A5
Authority
FR
France
Prior art keywords
contrast
function
photographic devices
optical
developing
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
FR7121330A
Other languages
French (fr)
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.)
Pentacon GmbH Foto und Feinwerktechnik
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
Application granted granted Critical
Publication of FR2096254A5 publication Critical patent/FR2096254A5/en
Expired legal-status Critical Current

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
FR7121330A 1970-06-17 1971-06-11 METHOD AND DEVICE FOR DEVELOPING OPTICAL SYSTEMS AS A FUNCTION OF CONTRAST IN OPTICAL INSTRUMENTS, ESPECIALLY IN PHOTOGRAPHIC DEVICES Expired FR2096254A5 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR2096254A5 true FR2096254A5 (en) 1972-02-11

Family

ID=5482623

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7121330A Expired FR2096254A5 (en) 1970-06-17 1971-06-11 METHOD AND DEVICE FOR DEVELOPING OPTICAL SYSTEMS AS A FUNCTION OF CONTRAST IN OPTICAL INSTRUMENTS, ESPECIALLY IN PHOTOGRAPHIC DEVICES

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
DE2062173B2 (en) 1973-10-25
DE2062173A1 (en) 1972-03-30
CH548039A (en) 1974-04-11
DE2062173C3 (en) 1974-05-22
AT321101B (en) 1975-03-10
SE370131B (en) 1974-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse