| 摘要 |
<p>A display apparatus (11) for use in displaying an image to a viewer, comprising a transparent optical waveguide display unit (12) arranged for receiving image-bearing light (14) into the optical waveguide display unit, for guiding the received light therealong to an output area (24) thereof, and for outputting from the output area the image-bearing light (15) collimated to present a viewable image. A screen (13) arranged adjacent to and behind the output area of the optical waveguide display unit is visible therethrough and at least partially blocks light from an external scene behind the output area (24) otherwise viewable through the output area. This at least partially blocks the combining of light from the external scene with the viewable image (15).</p> |
