Laser pointer
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United States of America Patent
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Dec 16, 2014
Issued Date -
N/A
app pub date -
Apr 27, 2011
filing date -
Apr 27, 2011
priority date (Note) -
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Abstract
A laser pointer suitable for a touch display panel is provided. The laser pointer includes a main body, a laser diode and a wave plate. The main body has a containing space. The laser diode is disposed in the containing space and has a light emitting end. The wave plate is disposed on the light emitting end, wherein the laser diode is suitable for emitting a laser beam having linear polarization from the light emitting end, and the wave plate is suitable for transforming the laser beam having linear polarization into a laser beam having circular polarization, such that the laser beam is suitable for being an input signal for the touch display panel.
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