Rear projection system, method for production and application
AssigneeGlasstech Doo
InventorsMitja Jelusic, Alex Miletic
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Abstract
The invention concerns a rear projection system in the form of a table consisting of at least one glass panel which has a diffusion coating containing hollow glass balls, whereas the hollow glass balls are arranged in a transparent or translucent binder matrix on the lower or upper surface of the glass panel and is illuminated from below with at least one projector having a projection field and that at least one projection image can be viewed by an observer at an observation angle of at least 176 degrees. The second embodiment involves a rear projection system in the form of a curved, two-dimensionally shaped glass panel having a diffusion coating containing hollow glass balls.
Claims18
A rear projection system comprising at least one panel comprising at least one diffusion layer, wherein the diffusion layer comprises a plurality of hollow glass balls arranged in a transparent or translucent binder matrix on the lower or upper surface of the panel, wherein the panel comprising the diffusion layer is designed as a table and a projector is arranged below the table and illuminates the bottom surface of the table, and wherein the plurality of hollow glass balls comprises a composition of hollow glass balls having two diameters wherein the ratio of one diameter to the other diameter is 1:2 or above, and wherein the hollow glass balls of the greater diameter are arranged in a single layer in the binder matrix.
A rear projection system comprising at least one panel comprising at least one diffusion layer, wherein the diffusion layer comprises hollow glass balls and is arranged in a transparent or translucent binder matrix on the lower or upper surface of the panel, wherein a projector is arranged below the panel and illuminates the bottom surface of the panel, the hollow glass balls are arranged in a binder matrix in the form of a curved, two-dimensionally shaped glass panel or plastic sheet, and the plurality of hollow glass balls comprise a composition of hollow glass balls having two diameters wherein the ratio of one diameter to the other diameter is 1:2 or above, and wherein the hollow glass balls of the greater diameter are arranged in a single layer in the binder matrix.
A method for producing a rear projection system comprising at least one panel comprising at least one diffusion layer, wherein in a first procedural step hollow glass balls are dispersed in a binder matrix in a homogenous manner, in a second procedural step the binder matrix provided with hollow glass balls is applied to the whole surface of the panel or any other desired shape by using a screen printing or scraping or roll coating or curtain-casting process, and in a third procedural step solidifying takes place at approximately 620° C. or below 200° C., depending on the bonding agent selected, and wherein the plurality of hollow glass balls comprises a composition of hollow glass balls having two diameters wherein the ratio of one diameter to the other diameter is 1:2 or above, and wherein the hollow glass balls of the greater diameter are arranged in a single layer in the binder matrix.
Dependencies are inferred from the claim text.