04852988 is referenced by 157 patents and cites 15 patents.

A head-mounted, eye-movement, measurement system is provided with an optically flat glass laminated visor through which the observer views the external scene. Mounted so as to be vertically spaced from one side of the eye's optic axis is an eye tracker module for recording the observer's eye-movement relative to the head, principally by measuring the position of the pupil and corneal reflex, by reflecting near infrared light to and from the observer's eye vis-a-vis the front surface of the visor. Mounted so as to be vertically spaced on the opposite side of the eye's optic axis is a field-of-view camera which records the external scene viewed by the observer by reflecting external scene light from the back side of the visor. The distances and angular relationship of the visor, camera and eye are controlled to eliminate parallax from the field-of-view camera while also providing a stable arrangement permitting wide-angle scene viewing and accurate recordal of eye movements.

Title
Visor and camera providing a parallax-free field-of-view image for a head-mounted eye movement measurement system
Application Number
7/243330
Publication Number
4852988
Application Date
September 12, 1988
Publication Date
August 1, 1989
Inventor
Joshua D Borah
Mansfield
MA, US
Jose Velez
Newton
MA, US
Agent
Body Vickers & Daniels
Assignee
Applied Science Laboratories
MA, US
IPC
A61B 3/14
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