GB1331905A - Projection screen - Google Patents

Projection screen

Info

Publication number
GB1331905A
GB1331905A GB1331905DA GB1331905A GB 1331905 A GB1331905 A GB 1331905A GB 1331905D A GB1331905D A GB 1331905DA GB 1331905 A GB1331905 A GB 1331905A
Authority
GB
United Kingdom
Prior art keywords
projection
reflecting
projection screen
pvc
curvature
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
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.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
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 Pentacon Dresden VEB filed Critical Pentacon Dresden VEB
Publication of GB1331905A publication Critical patent/GB1331905A/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
    • G03B21/602—Lenticular screens

Abstract

1331905 Projection screen PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 24 Feb 1972 8639/72 Heading G2A A projection screen comprises a reflecting foil and a transparent layer laminated thereon, the reflecting foil having a diffusedly reflecting aluminium coating and the transparent layer is facing a projection source being provided with transparent uniformly shaped discrete projections. The reflecting foil may be of aluminium and have a flexible or rigid backing consisting of PVC-coated paper or PVC-coated fabric. The projections may be thermoplastic pyramids, cones or plano convex or concave lenses and their shape is determined by a general formula. The screen may be curved, which curvature may be adjusted, the centre of curvature being at the projecting light source. A linearly polarized light beam may be used for stereo projection purposes.
GB1331905D 1972-02-24 1972-02-24 Projection screen Expired GB1331905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB863972 1972-02-24

Publications (1)

Publication Number Publication Date
GB1331905A true GB1331905A (en) 1973-09-26

Family

ID=9856349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1331905D Expired GB1331905A (en) 1972-02-24 1972-02-24 Projection screen

Country Status (1)

Country Link
GB (1) GB1331905A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204715A (en) * 1987-05-14 1988-11-16 Cheng Teh Yao Oriented-reflection reflective mirror screen
US9417514B2 (en) 2011-10-27 2016-08-16 3M Innovative Properties Company Polarization preserving 3D screen
CN113885288A (en) * 2020-07-03 2022-01-04 中强光电股份有限公司 Curved surface shell and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204715A (en) * 1987-05-14 1988-11-16 Cheng Teh Yao Oriented-reflection reflective mirror screen
US9417514B2 (en) 2011-10-27 2016-08-16 3M Innovative Properties Company Polarization preserving 3D screen
CN113885288A (en) * 2020-07-03 2022-01-04 中强光电股份有限公司 Curved surface shell and manufacturing method thereof

Similar Documents

Publication Publication Date Title
AU515067B2 (en) Tranducer having piezoelectric film arranged with alternating curvatures
CA986879A (en) Radiation of photocurable polymer in the form of a coating film on a substrate
NZ185170A (en) Piezoelectric film transducer with lenticular surface
BE833604A (en) REFLEX LIGHT REFLECTIVE SHEET
SE422248B (en) REFLECTING SHEET MATERIALS WITH TRANSPARENT IMAGE LAYER
AU5682073A (en) Fixing resinous toner image
BR7300354D0 (en) MATERIAL IN STAINLESS SHEET WITH LIGHT WITH AN IMAGE FORMING LAYER
GB969585A (en) Improvements in the manufacture of mirrors
GB1331905A (en) Projection screen
JPS5375950A (en) Formation of hologram
CA991897A (en) Thin film optical couplers employing mode conversion
NO774224L (en) TRAILING PLATE FOR A LENS OR SIMILAR
GB1220604A (en) Front projector screen
FR2276605A1 (en) Double sided optical projection surface - improved image contrast transfer and improved luminous transfer efficiency
JPS646935A (en) Production of transmissive type screen
JPS55111936A (en) Screen composed of acrylic laminated highly light diffusing plate and fresnel lens
JPS55161613A (en) Manufacture of recurrent reflection sheet
GB1260606A (en) Improvements in or relating to retroreflective light reflectors
FR2229082A1 (en) Photographic reproduction of image information - e.g. microfilms etc. mounted on sheets
AU6372873A (en) Electrophotographic material with resin coating
FR2257922A1 (en) Method of forming multiple visual images - has transmitting and reflecting sheet in image beam path
ES399364A1 (en) Procedure for the manufacture of multireflecting decorative sheets. (Machine-translation by Google Translate, not legally binding)
JPS5330352A (en) Magneto-optical display device
JPS5235641A (en) Electrophotographic copying process
JPS52134431A (en) Image formation

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees