FR823023A - Photographic telephoto lens - Google Patents

Photographic telephoto lens

Info

Publication number
FR823023A
FR823023A FR823023DA FR823023A FR 823023 A FR823023 A FR 823023A FR 823023D A FR823023D A FR 823023DA FR 823023 A FR823023 A FR 823023A
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.)
ZEISS CARL SOC
Original Assignee
ZEISS CARL SOC
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 CARL SOC filed Critical ZEISS CARL SOC
Application granted granted Critical
Publication of FR823023A publication Critical patent/FR823023A/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)
  • Lenses (AREA)
FR823023D 1936-06-23 1937-06-14 Photographic telephoto lens Expired FR823023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ23266D DE717126C (en) 1936-06-23 1936-06-23 Long-range photographic lens

Publications (1)

Publication Number Publication Date
FR823023A true FR823023A (en) 1938-01-12

Family

ID=7625855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR823023D Expired FR823023A (en) 1936-06-23 1937-06-14 Photographic telephoto lens

Country Status (2)

Country Link
DE (1) DE717126C (en)
FR (1) FR823023A (en)

Also Published As

Publication number Publication date
DE717126C (en) 1942-02-07

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