FR833904A - Improvements to optical devices for photography - Google Patents

Improvements to optical devices for photography

Info

Publication number
FR833904A
FR833904A FR833904DA FR833904A FR 833904 A FR833904 A FR 833904A FR 833904D A FR833904D A FR 833904DA FR 833904 A FR833904 A FR 833904A
Authority
FR
France
Prior art keywords
photography
optical devices
optical
devices
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)
Inventor
Abel Gance
Pierre Angenieux
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 FR833904A publication Critical patent/FR833904A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR833904D 1937-07-05 1937-07-05 Improvements to optical devices for photography Expired FR833904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR833904T 1937-07-05

Publications (1)

Publication Number Publication Date
FR833904A true FR833904A (en) 1938-11-04

Family

ID=9296834

Family Applications (1)

Application Number Title Priority Date Filing Date
FR833904D Expired FR833904A (en) 1937-07-05 1937-07-05 Improvements to optical devices for photography

Country Status (1)

Country Link
FR (1) FR833904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741605A (en) * 1983-03-29 1988-05-03 Ab Svensk Filmindustri Multifocal objective

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741605A (en) * 1983-03-29 1988-05-03 Ab Svensk Filmindustri Multifocal objective

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