SYSTEM FOR AN OBSERVATION OF AN EYE AND ITS SURROUNDING AREA
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Jan 17, 2013
filing date -
Jan 22, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a system and device for observation of an eye (E) comprising a light source (LSo) for illuminating the eye. Further, the system includes a diffraction grating as an optical relay (OR) for receiving the light reflected from the eye and for deflecting it towards a light sensor (LSe). The incident light ray (r inc) intersects the optical relay at an incidence angle (alphajnc) with the normal (n_OR) to the optical relay in an incidence plane (Pl_inc) formed by the incident light ray (r_inc) and the normal (n_OR). The deflected light ray (r def) forms a deflection angle (alpha def) with the normal (n_OR) in a deflection plane (Pl def) formed by the deflected light ray (r_def) and the normal (n_OR). The optical relay is positioned such that the incidence and the deflection angle and/or the incidence plane and the deflection plane are different from each other.
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