Multiple channel light guide for optically tracking pointing...

Details Multiple channel light guide for optically tracking pointing... Multiple channel light guide for optically tracking pointing...

2006-03-07

2006-03-07

Awad, Amr A. (Department: 2673)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S175000, C250S221000

Reexamination Certificate

active

07009598

ABSTRACT:
A light guide includes at least two channels from which light is shined on a target area. The multiple channels disperse light across the target area more uniformly and with fewer dead or bright spots. The channels may be integral to one another, and may be molded. The light guide may further include an integral holder for supporting and aligning a LED light source to shine upon an entrance surface of the light guide. The entrance surface may also be formed as a collection lens. The channels may also be configured to direct light onto a target area at different angles. One or more of the channel faces from which light emanates may also be non-planar.

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