FR709257A - Device for projecting an image in variable sizes - Google Patents

Device for projecting an image in variable sizes

Info

Publication number
FR709257A
FR709257A FR709257DA FR709257A FR 709257 A FR709257 A FR 709257A FR 709257D A FR709257D A FR 709257DA FR 709257 A FR709257 A FR 709257A
Authority
FR
France
Prior art keywords
projecting
image
variable sizes
sizes
variable
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
Charles Rouge
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 FR709257A publication Critical patent/FR709257A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR709257D 1930-06-02 1931-01-13 Device for projecting an image in variable sizes Expired FR709257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE709257X 1930-06-02

Publications (1)

Publication Number Publication Date
FR709257A true FR709257A (en) 1931-08-05

Family

ID=6617822

Family Applications (1)

Application Number Title Priority Date Filing Date
FR709257D Expired FR709257A (en) 1930-06-02 1931-01-13 Device for projecting an image in variable sizes

Country Status (1)

Country Link
FR (1) FR709257A (en)

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