FR809508A - Optical device for observing transparent images - Google Patents

Optical device for observing transparent images

Info

Publication number
FR809508A
FR809508A FR809508DA FR809508A FR 809508 A FR809508 A FR 809508A FR 809508D A FR809508D A FR 809508DA FR 809508 A FR809508 A FR 809508A
Authority
FR
France
Prior art keywords
optical device
transparent images
observing transparent
observing
images
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
Guy Montmartin
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 FR809508A publication Critical patent/FR809508A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • G02B27/025—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and magnifying means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR809508D 1935-11-28 1935-11-28 Optical device for observing transparent images Expired FR809508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR809508T 1935-11-28

Publications (1)

Publication Number Publication Date
FR809508A true FR809508A (en) 1937-03-04

Family

ID=9253586

Family Applications (1)

Application Number Title Priority Date Filing Date
FR809508D Expired FR809508A (en) 1935-11-28 1935-11-28 Optical device for observing transparent images

Country Status (1)

Country Link
FR (1) FR809508A (en)

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