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FR904254A - Photographic telephoto lens - Google Patents

Photographic telephoto lens

Info

Publication number
FR904254A
FR904254A FR904254DA FR904254A FR 904254 A FR904254 A FR 904254A FR 904254D A FR904254D A FR 904254DA FR 904254 A FR904254 A FR 904254A
Authority
FR
France
Prior art keywords
telephoto lens
photographic
photographic telephoto
lens
telephoto
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss 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 Carl Zeiss AG filed Critical Carl Zeiss AG
Application granted granted Critical
Publication of FR904254A publication Critical patent/FR904254A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR904254D 1939-03-30 1944-05-12 Photographic telephoto lens Expired FR904254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE904254X 1939-03-30

Publications (1)

Publication Number Publication Date
FR904254A true FR904254A (en) 1945-10-31

Family

ID=6861783

Family Applications (1)

Application Number Title Priority Date Filing Date
FR904254D Expired FR904254A (en) 1939-03-30 1944-05-12 Photographic telephoto lens

Country Status (1)

Country Link
FR (1) FR904254A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631497A (en) * 1952-02-21 1953-03-17 Harry J Graw Telephoto objective

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631497A (en) * 1952-02-21 1953-03-17 Harry J Graw Telephoto objective

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