06535674 is referenced by 16 patents.

An optical display panel which provides improved viewing contrast for front projection applications, and a method of producing a stacked optical waveguide panel for front projection applications, are disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has a back face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core between an opposing pair of cladding layers, and at least one reflector connected to the back face of at least one waveguide, wherein the at least one reflector receives image light incident through at least one waveguide from the outlet face, and wherein the at least one reflector redirects the image light back through the at least one waveguide out of the outlet face. In the preferred embodiment, the outlet face is rendered black by inclusion of black within or between cladding layers. The method includes stacking a plurality of clear strips of plastic, placing a double sided, dark colored adhesive between each strip of plastic, pressing the stack, forming, at two opposite ends of the stack, a back face and an outlet face, and connecting at least one reflector to the back face.

Title
High contrast front projection display panel and a method of making a high contrast front projection display panel
Application Number
9/737732
Publication Number
6535674 (B2)
Application Date
December 15, 2000
Publication Date
March 18, 2003
Inventor
James T Veligdan
Manorville
NY, US
Agent
Reed Smith
US
Agent
Thomas J McWilliams
US
Matthew J Esserman
US
Assignee
Scram Technologies
MD, US
IPC
G02B 6/04
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