PROJECTION APPARATUS
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United States of America Patent
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N/A
Issued Date -
Feb 21, 2008
app pub date -
Jun 25, 2007
filing date -
Aug 15, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A projection apparatus includes a projection module and a user operation interface including a button module and a sensor module. The button module includes a button and a light source located under the button. The sensor module is electrically connected to the button module and the sensor module has a sensing scope. The sensing scope covers a location above the button module. When hands of user approach the button module and enter the sensing scope above the button module, the light source under the button provides sufficient illumination, such that users can identify the location of the button easily in dark environment.
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