Digitizer with illuminable working surface
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United States of America Patent
Stats
-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Jan 11, 1990
filing date -
Jan 11, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Digitizer tablet and digitizer tablet structure having an illuminable working surface are disclosed. A space between a top translucent layer having the working surface and a source of light is provided so as to eliminate or minimize undesirable lighting effects at the working surface. In the preferred embodiments, the space is an air gap (e.g. 0.060-0.250 inch) immediately adjacent the top translucent layer. The air gap is formed by transparent optical fibers or solid glass or acrylic rods. Back-lighted, translucent, back-lightable (without light source) and surface lighted digitizer tablet embodiments are described.
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