RETINAL REFLECTION GENERATION AND DETECTION SYSTEM AND ASSOCIATED METHODS
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United States of America Patent
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Issued Date -
Dec 11, 2008
app pub date -
Jun 6, 2007
filing date -
Jun 6, 2007
priority date (Note) -
Abandoned
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Abstract
A system for generating a beam for retinal reflection detection includes a beam processor positioned to receive an illumination beam having a first spot size from a light source. The beam processor can alter the illumination beam to form a beam having a second spot size. Focusing optics focus this altered beam onto an eye, causing a spot to be formed on the retina. A detector receives reflected radiation from the retina passed through the pupil, and generates data indicative of a spatial extent of the eye pupil and an intensity map of the reflected radiation. A software package can determine from the data a pupil size and an intensity level in the intensity map. A controller in communication with the software signals the beam processor to vary the second spot size to optimize an accuracy of the determined pupil size and the intensity level.
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