FR730627A - écrans translucides pour projection optique - Google Patents

écrans translucides pour projection optique

Info

Publication number
FR730627A
FR730627A FR730627DA FR730627A FR 730627 A FR730627 A FR 730627A FR 730627D A FR730627D A FR 730627DA FR 730627 A FR730627 A FR 730627A
Authority
FR
France
Prior art keywords
optical projection
translucent screens
translucent
screens
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
English (en)
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR730627A publication Critical patent/FR730627A/fr
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)
FR730627D 1931-01-29 1932-01-28 écrans translucides pour projection optique Expired FR730627A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB730627X 1931-01-29

Publications (1)

Publication Number Publication Date
FR730627A true FR730627A (fr) 1932-08-18

Family

ID=10495492

Family Applications (1)

Application Number Title Priority Date Filing Date
FR730627D Expired FR730627A (fr) 1931-01-29 1932-01-28 écrans translucides pour projection optique

Country Status (1)

Country Link
FR (1) FR730627A (fr)

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