FR784602A - Central shutter for photographic lenses - Google Patents

Central shutter for photographic lenses

Info

Publication number
FR784602A
FR784602A FR784602DA FR784602A FR 784602 A FR784602 A FR 784602A FR 784602D A FR784602D A FR 784602DA FR 784602 A FR784602 A FR 784602A
Authority
FR
France
Prior art keywords
photographic lenses
central shutter
shutter
central
photographic
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.)
Voigtlander AG
Original Assignee
Voigtlander 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 Voigtlander AG filed Critical Voigtlander AG
Application granted granted Critical
Publication of FR784602A publication Critical patent/FR784602A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR784602D 1934-01-24 1935-01-23 Central shutter for photographic lenses Expired FR784602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE784602X 1934-01-24

Publications (1)

Publication Number Publication Date
FR784602A true FR784602A (en) 1935-07-22

Family

ID=6698573

Family Applications (1)

Application Number Title Priority Date Filing Date
FR784602D Expired FR784602A (en) 1934-01-24 1935-01-23 Central shutter for photographic lenses

Country Status (1)

Country Link
FR (1) FR784602A (en)

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