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26 April 2002 Flat projection display panel and its near critical angle AR coating
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It has recently been shown that a tapered slab glass waveguide (wedge) can be used to make a flat panel display by projecting a video image into the thick edge of the wedge1. In this paper, we present the equations that relate the incident angle to the position where the ray emerges from the wedge. In the analysis, skew rays are also considered. We also present the design and experimental results of an anti-reflection coating that increases the brightness and reduces the blur of the wedge. With the coating, the transmittance of the interface rises from 0 (TIR) to 99% for a 0.35 degree change in incident angle for S-polarised monochromatic light. Without the coating, the transmittance falls below 50%. We also present a chromatic design intended to work with S-polarised rays from an arc lamp.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jiang Jian Zhong, Adrian R. L. Travis, Frank P. Payne, and John R. Moore "Flat projection display panel and its near critical angle AR coating", Proc. SPIE 4657, Projection Displays VIII, (26 April 2002);

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