Translucent projection screen for rear-type image projection system and process for fabricating the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKeisuke Miyoshi, Kenshiro Sumi
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Abstract
A translucent projection screen for a rear-type image projection system comprising a flat plate or sheet of transparent resin into which are uniformly dispersed or distributed spherical glass beads, which are light diffusing materials. Such screen as described above is fabricated by dispersing or distributing spherical glass beads into a transparent resin, extruding and cutting the resin into pellets and forming these pellets into a flat plate or sheet by compression molding. A translucent projection screen having a Fresnel lens surface and a lenticular lens surface can be also molded by one step.
Claims8
A translucent projection screen for a rear-type image projection system comprising a flat plate or sheet of a transparent resin having spherical glass beads uniformly dispersed therein as light diffusing materials.
A process for fabricating translucent projection screens for rear-type image projection system characterized by
- dispersing spherical glass beads, which are light diffusing materials, into a transparent resin,
- extruding said resin and cutting the extruded resin into pellets, and
- placing a plurality of pellets in a mold and compressing them into a flat plate or sheet.
Dependencies are inferred from the claim text.