Visual axis detecting device

Details Visual axis detecting device Visual axis detecting device

1993-09-01

1995-04-18

Perkey, W. B.

Television

Special applications

Simulator

348317, 351210, G03B 1302, A61B 314, H04N 5335

Patent

active

054082927

ABSTRACT:
An image processing apparatus for visual axis detection in which a frame transfer type CCD is used as an area sensor for converting an incident eyeball image into an electrical signal. Use of the frame transfer type LCD will widen the light receiving area on the surface of the CCD and enhance the numerical aperture, as to well as greatly enhance the probability of detection of Purkinje's image and enhance the sensitivity to the infrared range to thereby make the Purkinje's image detectable by a smaller quantity of illumination.

REFERENCES:
patent: 4320413 (1982-03-01), Takemura
patent: 4574314 (1986-03-01), Weinblatt
patent: 4836670 (1989-06-01), Hutchinson
patent: 5036347 (1991-07-01), Tsunekawa et al.
patent: 5231674 (1993-07-01), Cleveland et al.

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