FR967483A - screen comprising a fresnel surface and projection device equipped with such a screen - Google Patents

screen comprising a fresnel surface and projection device equipped with such a screen

Info

Publication number
FR967483A
FR967483A FR967483DA FR967483A FR 967483 A FR967483 A FR 967483A FR 967483D A FR967483D A FR 967483DA FR 967483 A FR967483 A FR 967483A
Authority
FR
France
Prior art keywords
screen
projection device
device equipped
fresnel surface
fresnel
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR967483A publication Critical patent/FR967483A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G03B21/625—Lenticular translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR967483D 1947-06-11 1948-06-09 screen comprising a fresnel surface and projection device equipped with such a screen Expired FR967483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL967483X 1947-06-11

Publications (1)

Publication Number Publication Date
FR967483A true FR967483A (en) 1950-11-03

Family

ID=19866113

Family Applications (1)

Application Number Title Priority Date Filing Date
FR967483D Expired FR967483A (en) 1947-06-11 1948-06-09 screen comprising a fresnel surface and projection device equipped with such a screen

Country Status (1)

Country Link
FR (1) FR967483A (en)

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