IT953572B - Schermo perfezionato per proiezioni - Google Patents

Schermo perfezionato per proiezioni

Info

Publication number
IT953572B
IT953572B IT2250072A IT2250072A IT953572B IT 953572 B IT953572 B IT 953572B IT 2250072 A IT2250072 A IT 2250072A IT 2250072 A IT2250072 A IT 2250072A IT 953572 B IT953572 B IT 953572B
Authority
IT
Italy
Prior art keywords
perfected
projections
screen
screen perfected
Prior art date
Application number
IT2250072A
Other languages
English (en)
Original Assignee
Noel Kirkpatrick Hubbard
Edward Lee Trelford
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 Noel Kirkpatrick Hubbard, Edward Lee Trelford filed Critical Noel Kirkpatrick Hubbard
Application granted granted Critical
Publication of IT953572B publication Critical patent/IT953572B/it

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)
  • Overhead Projectors And Projection Screens (AREA)
IT2250072A 1971-03-29 1972-03-25 Schermo perfezionato per proiezioni IT953572B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB808771 1971-03-29

Publications (1)

Publication Number Publication Date
IT953572B true IT953572B (it) 1973-08-10

Family

ID=9845511

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2250072A IT953572B (it) 1971-03-29 1972-03-25 Schermo perfezionato per proiezioni

Country Status (5)

Country Link
BE (1) BE781336A (it)
DE (1) DE2214638A1 (it)
FR (1) FR2131698A5 (it)
IT (1) IT953572B (it)
NL (1) NL7204111A (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021992A2 (en) * 1995-01-14 1996-07-18 Optica Nova Onab Ab Method for increased colour reproduction
CN110554558A (zh) * 2018-05-31 2019-12-10 深圳光峰科技股份有限公司 一种高对比度反射屏幕

Also Published As

Publication number Publication date
BE781336A (fr) 1972-07-17
DE2214638A1 (de) 1972-10-12
NL7204111A (it) 1972-10-03
FR2131698A5 (en) 1972-11-10

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