GB662689A - Projection screen - Google Patents

Projection screen

Info

Publication number
GB662689A
GB662689A GB14695/49A GB1469549A GB662689A GB 662689 A GB662689 A GB 662689A GB 14695/49 A GB14695/49 A GB 14695/49A GB 1469549 A GB1469549 A GB 1469549A GB 662689 A GB662689 A GB 662689A
Authority
GB
United Kingdom
Prior art keywords
projection screen
projection
jan
june
class
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
GB14695/49A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB662689A publication Critical patent/GB662689A/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)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

662,689. Projection screens. PHILCO CORPORATION. June 1, 1949 [Jan. 14, 1949], No. 14695/49. Addition to 638,141. Drawing to Specification. Class 97 (i). The projection screen described and claimed in the parent Specification is modified in that the specularly reflecting elements are replaced by light transmitting elements.
GB14695/49A 1949-01-14 1949-06-01 Projection screen Expired GB662689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US662689XA 1949-01-14 1949-01-14

Publications (1)

Publication Number Publication Date
GB662689A true GB662689A (en) 1951-12-12

Family

ID=22068400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14695/49A Expired GB662689A (en) 1949-01-14 1949-06-01 Projection screen

Country Status (1)

Country Link
GB (1) GB662689A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310219A (en) * 1979-04-13 1982-01-12 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Light diffusing surface structure for a light guide in an information display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310219A (en) * 1979-04-13 1982-01-12 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Light diffusing surface structure for a light guide in an information display

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