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FR988040A - Device for improving the vision of bright images - Google Patents

Device for improving the vision of bright images

Info

Publication number
FR988040A
FR988040A FR988040DA FR988040A FR 988040 A FR988040 A FR 988040A FR 988040D A FR988040D A FR 988040DA FR 988040 A FR988040 A FR 988040A
Authority
FR
France
Prior art keywords
vision
improving
bright images
bright
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
Georges Dion
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 FR988040A publication Critical patent/FR988040A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR988040D 1949-04-07 1949-04-07 Device for improving the vision of bright images Expired FR988040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR988040T 1949-04-07

Publications (1)

Publication Number Publication Date
FR988040A true FR988040A (en) 1951-08-22

Family

ID=9539298

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988040D Expired FR988040A (en) 1949-04-07 1949-04-07 Device for improving the vision of bright images

Country Status (1)

Country Link
FR (1) FR988040A (en)

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