| 摘要 |
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.
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