GB462091A - Improvements in or relating to sound-permeable projection screens - Google Patents

Improvements in or relating to sound-permeable projection screens

Info

Publication number
GB462091A
GB462091A GB1334736A GB1334736A GB462091A GB 462091 A GB462091 A GB 462091A GB 1334736 A GB1334736 A GB 1334736A GB 1334736 A GB1334736 A GB 1334736A GB 462091 A GB462091 A GB 462091A
Authority
GB
United Kingdom
Prior art keywords
screen
projection screens
relating
sound
glass beads
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
GB1334736A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1334736A priority Critical patent/GB462091A/en
Publication of GB462091A publication Critical patent/GB462091A/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
    • G03B21/565—Screens allowing free passage of sound

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Laminated Bodies (AREA)

Abstract

462,091. Projection screens. LAMBERT, R. May 11, 1936, No. 13347. [Class 97 (i)] A projection screen is provided with a raised patterned surface and has one or more perforations in each individual panel; the screen may be coated with fine refracting or reflecting particles. As shown, a porous woven or knitted fabric 1 has a honeycomb -meshed fabric 2 joined to it by rubber solution &c., or by sewing. Refracting or reflecting particles 3 may be secured to the screen by adhesive 4 sprayed thereon in such manner as to leave the pores 1<1> in each panel unobstructed. The particles may have the form of single or double concave or convex lenses of small curvature and may be polished metal, or crystal, or other, glass beads ; the glass beads may be chromium plated.
GB1334736A 1936-05-11 1936-05-11 Improvements in or relating to sound-permeable projection screens Expired GB462091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1334736A GB462091A (en) 1936-05-11 1936-05-11 Improvements in or relating to sound-permeable projection screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1334736A GB462091A (en) 1936-05-11 1936-05-11 Improvements in or relating to sound-permeable projection screens

Publications (1)

Publication Number Publication Date
GB462091A true GB462091A (en) 1937-03-02

Family

ID=10021299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1334736A Expired GB462091A (en) 1936-05-11 1936-05-11 Improvements in or relating to sound-permeable projection screens

Country Status (1)

Country Link
GB (1) GB462091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112099299A (en) * 2019-06-17 2020-12-18 海信视像科技股份有限公司 Self-sounding projection display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112099299A (en) * 2019-06-17 2020-12-18 海信视像科技股份有限公司 Self-sounding projection display device
CN112099299B (en) * 2019-06-17 2022-07-08 海信视像科技股份有限公司 Self-sounding projection display device

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