Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1992-01-30
1993-12-14
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351209, 351221, A61B 314
Patent
active
052707482
ABSTRACT:
An eye tracking device that utilizes light detection devices for determining the visual axis and point of regard of a user. The light detection devices are arranged in such a way, such as embedded in a thin film, so as to be curved around the optical axis of the eye. In this way, the light detection devices are always coincident with source-emitted light reflected from the fovea. The curved arrangement of light detection devices are mounted onto a head or facial apparatus, which has a mild reflector on its outside surface to keep external light noise at a minimum. Conversion circuitry, such as a pyramid cascade circuit or a microprocessor circuit, determines the position of the fovea-reflected light and computes the visual axis and point of regard of the user at a very rapid rate.
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Arnold Bruce Y.
Dang Hung Xuan
Mak Technologies, Inc.
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