Head tracking system

Details Head tracking system Head tracking system

1998-05-15

2000-05-16

Fulton, Christopher W.

Geometrical instruments

Miscellaneous

Light direction

33 1CC, 33262, 33512, 2503381, G01B 1500, G01C 310

Patent

active

060619163

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.

REFERENCES:
patent: 4486955 (1984-12-01), Fisher et al.
patent: 4688037 (1987-08-01), Krieg
patent: 4691446 (1987-09-01), Pitches et al.
patent: 5452516 (1995-09-01), Schegerin
Japanese Abstract 02 187704, published Jul. 23, 1990, for "Plastic Fluorescent Fiber".
Japanese Abstract 05 152609, published Jun. 18, 1993, for "Light Emitting Diode".

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