Device for tracking pupil of eyeball using intensity changes...

Details Device for tracking pupil of eyeball using intensity changes... Device for tracking pupil of eyeball using intensity changes...

2007-02-13

2009-12-29

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S209000

Reexamination Certificate

active

07637615

ABSTRACT:
A technique is disclosed of tracking a position of a pupil of a viewer's eyeball, by directing light toward the eyeball and using a portion of the light reflected from the eyeball. In the technique, the detection is performed of the intensity of a reflected light beam which is a portion of a light beam entering the eyeball which is reflected therefrom. An intensity signal indicative of the intensity of the reflected light beam is produced. The pupil position is tracked based on intensity changes of the reflected light beam represented by the intensity signal.

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