PROJECTION TELEVISION SETS FEATURING SCREEN

Brand	Owner	Address	Description
THEATERFINE	TOSHIBA AMERICA CONSUMER PRODUCTS	80 Totowa Road Wayne NJ 07470	Projection television sets featuring screen technology that reduces the physical space between the lines on the lenticular screen;THEATER FINE;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An off-axis Fresnel lens is disclosed that, when combined with a rear projection screen (comprising, e.g., a lenticular lens, a diffuser, or both), enables construction of rear-projection-type screen devices (e.g., projection television systems) that are thinner and have improved contrast and resolution when compared with conventional projection screen devices. The off-axis Fresnel lens comprises a plurality of concentric, outwardly-extending, total internal reflection-type prism facets. Each facet, in turn, comprises top and bottom sides, one or both of which may be flat or outwardly convex. Embodiments of the invention may also include concentric opaque sections that are disposed between successive prisms, between the prism base and the output surface of the Fresnel lens, and/or between the output surface of the Fresnel lens and the input surface of the projection screen in order to improve contrast. Contrast may also be enhanced by laminating the Fresnel lens to the projection screen.