FR614065A - Improvements to optical projection systems - Google Patents

Improvements to optical projection systems

Info

Publication number
FR614065A
FR614065A FR614065DA FR614065A FR 614065 A FR614065 A FR 614065A FR 614065D A FR614065D A FR 614065DA FR 614065 A FR614065 A FR 614065A
Authority
FR
France
Prior art keywords
optical projection
projection systems
systems
optical
projection
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
Johannes Robert Cabl August
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 FR614065A publication Critical patent/FR614065A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR614065D 1925-04-06 1926-04-03 Improvements to optical projection systems Expired FR614065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB614065X 1925-04-06

Publications (1)

Publication Number Publication Date
FR614065A true FR614065A (en) 1926-12-06

Family

ID=10487003

Family Applications (1)

Application Number Title Priority Date Filing Date
FR614065D Expired FR614065A (en) 1925-04-06 1926-04-03 Improvements to optical projection systems

Country Status (1)

Country Link
FR (1) FR614065A (en)

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