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Title: Black optic display

An optical display includes a plurality of stacked optical waveguides having first and second opposite ends collectively defining an image input face and an image screen, respectively, with the screen being oblique to the input face. Each of the waveguides includes a transparent core bound by a cladding layer having a lower index of refraction for effecting internal reflection of image light transmitted into the input face to project an image on the screen, with each of the cladding layers including a cladding cap integrally joined thereto at the waveguide second ends. Each of the cores is beveled at the waveguide second end so that the cladding cap is viewable through the transparent core. Each of the cladding caps is black for absorbing external ambient light incident upon the screen for improving contrast of the image projected internally on the screen.
Inventors:
 [1]
  1. (Manorville, NY)
Issue Date:
OSTI Identifier:
870930
Assignee:
Associated Universities, Inc. (Washington, DC) BNL
Patent Number(s):
US 5625736
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY
Country of Publication:
United States
Language:
English
Subject:
black; optic; display; optical; plurality; stacked; waveguides; opposite; collectively; defining; image; input; screen; respectively; oblique; transparent; core; bound; cladding; layer; index; refraction; effecting; internal; reflection; light; transmitted; layers; including; cap; integrally; joined; thereto; waveguide; cores; beveled; viewable; caps; absorbing; external; ambient; incident; improving; contrast; projected; internally; optical display; light incident; internal reflection; optical waveguides; optical waveguide; cladding layer; light transmitted; stacked optical; optical wave; collectively defining; ambient light; layers including; /385/362/

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