FR825562A - Focusing device for photographic lenses - Google Patents

Focusing device for photographic lenses

Info

Publication number
FR825562A
FR825562A FR825562DA FR825562A FR 825562 A FR825562 A FR 825562A FR 825562D A FR825562D A FR 825562DA FR 825562 A FR825562 A FR 825562A
Authority
FR
France
Prior art keywords
focusing device
photographic lenses
photographic
lenses
focusing
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
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR825562A publication Critical patent/FR825562A/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
    • 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)
FR825562D 1936-10-16 1937-08-13 Focusing device for photographic lenses Expired FR825562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE825562X 1936-10-16

Publications (1)

Publication Number Publication Date
FR825562A true FR825562A (en) 1938-03-07

Family

ID=6747580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR825562D Expired FR825562A (en) 1936-10-16 1937-08-13 Focusing device for photographic lenses

Country Status (1)

Country Link
FR (1) FR825562A (en)

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