FR813650A - Objectif photographique de très grande ouverture - Google Patents

Objectif photographique de très grande ouverture

Info

Publication number
FR813650A
FR813650A FR813650DA FR813650A FR 813650 A FR813650 A FR 813650A FR 813650D A FR813650D A FR 813650DA FR 813650 A FR813650 A FR 813650A
Authority
FR
France
Prior art keywords
photographic lens
large aperture
aperture photographic
lens
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
English (en)
Inventor
Georges Felix Djian
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 filed Critical
Application granted granted Critical
Publication of FR813650A publication Critical patent/FR813650A/fr
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
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR813650D 1936-02-13 1936-02-13 Objectif photographique de très grande ouverture Expired FR813650A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR813650T 1936-02-13

Publications (1)

Publication Number Publication Date
FR813650A true FR813650A (fr) 1937-06-05

Family

ID=9266311

Family Applications (1)

Application Number Title Priority Date Filing Date
FR813650D Expired FR813650A (fr) 1936-02-13 1936-02-13 Objectif photographique de très grande ouverture

Country Status (1)

Country Link
FR (1) FR813650A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978957A (en) * 1958-04-03 1961-04-11 Optische Ind De Oude Delft Nv Optical lens system having a relative aperture larger than f/1

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978957A (en) * 1958-04-03 1961-04-11 Optische Ind De Oude Delft Nv Optical lens system having a relative aperture larger than f/1

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