Relative angle detecting system and virtual reality providing sy

Details Relative angle detecting system and virtual reality providing sy Relative angle detecting system and virtual reality providing sy

1996-12-04

1998-10-06

Trammell, James P.

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

345 7, 345 8, 340630, 356218, 356438, 356442, G01B 1126

Patent

active

058192077

ABSTRACT:
A relative angle detecting system permitting a wider range of detectable angles and offering a small detection error by using polarization and a virtual reality providing system using the same are disclosed. The relative angle detecting system includes a light source having a given polarizing direction and a light reception unit in which a plurality of polarization filters having different polarizing directions other than 90 degree and a plurality of light-receiving devices for receiving light passing through the filters are incorporated, and a relative angle is calculated on the basis of a combination of strengths of output signals of the plurality of light-receiving devices.

REFERENCES:
patent: 5506705 (1996-04-01), Yamamoto et al.
patent: 5576697 (1996-11-01), Nagashima et al.
patent: 5673103 (1997-09-01), Inoue et al.
patent: 5683297 (1997-11-01), Raviv et al.

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