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Application filed by Fernseh AgfiledCriticalFernseh Ag
Application grantedgrantedCritical
Publication of DK61757CpublicationCriticalpatent/DK61757C/da
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
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes
(AREA)
DK61757D1938-05-071939-05-06Fremgangsmaade og Apparat til Fremstilling af Billedprojektionsskærme.
DK61757C
(da)