Head tracking system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 16, 2000
Grant Date -
N/A
app pub date -
May 15, 1998
filing date -
Jun 3, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A head tracking system 10 comprises a radiation emitter 18 and a radiation sensor 16 connected to a tracking processor 12. The emitter 18 has an output 46 producing radiation with spectral peak in the range 1000 nm to 1100 nm from a conventional LED 40 with a spectral peak in the range 500 nm to 900 nm in combination with a photoluminescent material 42.
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