1
Thomas S McKechnie, Jill F Goldenberg, Joshua D Eskin, Jeffrey A Shimizu, Ralph H Bradley Jr, William F Guerinot: Display system with equal path lengths. North American Philips Corporation, Paul R Miller, September 5, 1989: US04864390 (129 worldwide citation)

Display systems useful for projection video and television systems are provided to perform with high efficiency and good color rendition. In these systems, color may be provided, as one example, by various light valves, such as liquid crystal displays. Each of the liquid crystal displays are positio ...


2
Thomas S McKechnie, Jill F Goldenberg: Projection screen having high resolution and good mechanical stability. North American Philips Corporation, Thomas A Briody, William J Streeter, Marianne R Rich, March 15, 1988: US04730897 (44 worldwide citation)

A screen consists of a clear mechanically stable substrate and a bulk diffuser portion which is as close to the front lenticules as possible. The diffuser may be dispersed within the lenticules or in a separate area immediately adjacent to them. The screen may be a two element screen, either the fro ...


3
Thomas S McKechnie, Jill F Goldenberg, Joshua D Eskin, A Shimizu Jeffrey, Ralph H Bradley Jr, William F Guerinot: Illumination system for LCD projection television. U S Philips Corporation, Paul R Miller, January 28, 1992: US05084807 (39 worldwide citation)

The present invention is directed to illumination structures useful in display systems for projection video and television devices performing with high efficiency and good color rendition. Such illumination sources include a light source having an inner and outer envelope with plane mirrors within t ...


4
Jill F Goldenberg, Ralph H Bradley Jr, William F Guerinot, Thomas S McKechnie: One-piece projection screen. North American Philips, Gregory P Gadson, September 27, 1988: US04773731 (33 worldwide citation)

A one-piece projection screen with improved overall efficiency and contrast, the elimination of corner illumination deficiencies and undesirable image artifacts. The optical power of the screen is divided between two or more surfaces acting as Fresnel lenses, and the region or medium separating the ...


5
Thomas S McKechnie, Jill F Goldenberg: Bulk diffuser for a projection television screen. North American Philips Corporation, Thomas A Briody, Jack Oisher, William J Streeter, July 14, 1987: US04679900 (32 worldwide citation)

A bulk diffuser for rear projection television screens which exhibits a Gaussian intensity profile. By appropriately selecting the indices of refraction of the substrate and the spheres therein and the range of diameters of the spheres, the intensity half-angle is made equal to the energy half-angle ...


6
Thomas S McKechnie: Projection television systems having lens tilt compensation member. North American Philips Corporation, F Brice Faller, June 9, 1987: US04672458 (12 worldwide citation)

A projection television system includes a planar projection screen, a CRT for producing a phosphor image, and a lens assembly for focusing the phosphor image onto the projection screen. The lens assembly is arranged such that its optical axis is skewed with respect to an axis normal to the projectio ...