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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
VanBreemen; Bertram
Address:
Indianapolis, IN
No. of patents:
7
Patents:












Patent Number Title Of Patent Date Issued
4556913 Apparatus for preventing virtual images in projection television receivers December 3, 1985
A rear projection television receiver has an image source, first and second mirrors, and a screen. Light travels from the image source to the screen along a first light path via the first and second mirrors and along a second path that bypasses the mirrors. A light baffle assembly compri
4544946 Vertical color shift correction in a rear projection television screen October 1, 1985
A rear projection television receiver incorporates red, green and blue-image producing kinescopes and a screen which includes a prism lens arrangement. The prism lens comprises a number of prism lens elements made up of a plurality of lens surfaces or facets. The prism lens forms the
4512631 Rear projection television screen incorporating a prism lens April 23, 1985
A rear projection television receiver incorporates a screen which includes a prism lens arrangement. The prism lens comprises a number of prism lens elements made up of a plurality of lens surfaces or facets. The individual facets of a given prism lens element form different angles with
4506295 Projection television receiver with unitary optics frame March 19, 1985
A mounting frame for optical components of a projection television receiver comprises tubular members interconnected to form a skeletal structure. The mounting frame incorporates sub-frames to which the projection tubes, mirror assemblies and screen are mounted. The frame forms a rigid
4482206 Rear projection television screen having a multi-surface Fresnel lens November 13, 1984
A rear projection television receiver comprising a rear projection screen that incorporates a compound Fresnel field lens. The field lens comprises two circular Fresnel lenses that together provide the total refraction for the light impinging on the screen. The angle of incidence of the
4452509 Projection television screen having a selected audience envelope June 5, 1984
A screen for a rear projection television receiver comprises a circular Fresnel lens element and a lenticular lens array. In order to adjust the location of the vertical audience envelope to optimize screen brightness for different viewing positions, the center of the Fresnel lens is
4429322 Method of fabricating a glass nozzle array for an ink jet printing apparatus January 31, 1984
Glass fibers having an etchable or leachable core are used to fabricate glass nozzle arrays. A plurality of fibers are aligned in spaced parallel relationship with one another, and their major longitudinal portions are encapsulated with either a resin material or solder glass to form a b










 
 
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