CCD Head and eye position indicator

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type

Patent

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Details

A61B 314

Patent

active

045681597

ABSTRACT:
A head and eye tracking apparatus utilizes a plurality of coded IR emitte mounted in a reflective surface, as a reference base. A reference lens aligned with the user's head references a limited number of the emitters within its field of view and transmits the image to a fiber optic bundle. Simultaneously, an IR reflection from the user's eye is superimposed on the image and transferred via the fiber optic bundle. A CCD array detects the IR transmission and provides a high speed read-out to a computer which can determine head and eye positions from the geometry of the emitters referenced by the lens.

REFERENCES:
patent: 3473868 (1969-10-01), Young et al.
patent: 3542457 (1970-11-01), Balding et al.
patent: 4075657 (1978-02-01), Weinblatt

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