GB286448A - Improvements in or relating to screens for optical projection apparatus - Google Patents

Improvements in or relating to screens for optical projection apparatus

Info

Publication number
GB286448A
GB286448A GB531127A GB531127A GB286448A GB 286448 A GB286448 A GB 286448A GB 531127 A GB531127 A GB 531127A GB 531127 A GB531127 A GB 531127A GB 286448 A GB286448 A GB 286448A
Authority
GB
United Kingdom
Prior art keywords
screens
relating
layer
projection apparatus
optical 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
GB531127A
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.)
ALEXANDER MIDDLETON MARTIN
Original Assignee
ALEXANDER MIDDLETON MARTIN
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 ALEXANDER MIDDLETON MARTIN filed Critical ALEXANDER MIDDLETON MARTIN
Priority to GB531127A priority Critical patent/GB286448A/en
Publication of GB286448A publication Critical patent/GB286448A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

286,448. Martin, A. M. Feb. 25, 1927. Projection screens.-A base of Hessian cloth s stiffened and coated with a thin layer of distemper on which is superposed a layer of metallic paint; a second layer of distemper and a second layer of metallic paint may be applied to the screen. Stiffening may be effected by impregnating the cloth with water glass.
GB531127A 1927-02-25 1927-02-25 Improvements in or relating to screens for optical projection apparatus Expired GB286448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB531127A GB286448A (en) 1927-02-25 1927-02-25 Improvements in or relating to screens for optical projection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB531127A GB286448A (en) 1927-02-25 1927-02-25 Improvements in or relating to screens for optical projection apparatus

Publications (1)

Publication Number Publication Date
GB286448A true GB286448A (en) 1928-03-08

Family

ID=9793703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB531127A Expired GB286448A (en) 1927-02-25 1927-02-25 Improvements in or relating to screens for optical projection apparatus

Country Status (1)

Country Link
GB (1) GB286448A (en)

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