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Line=of=sight recognition device for photographic viewfinder - uses corrected video data from corneal reflection to address selected imager corresp. to focus recognition zone
Line=of=sight recognition device for photographic viewfinder - uses corrected video data from corneal reflection to address selected imager corresp. to focus recognition zone
Emission from an infrared diode (48) is collimated (50) and reflected from the cornea, returning through a semitransparent mirror (53) to an enlarging lens (44), pentagonal prism (40), compensating prism (59), diminishing lens (60) and CCD image sensor (63) in optical conjugation with the pupil of the eye (45). The video signal is amplified (65), digitised (66) and corrected by subtraction (67) of error signals previously SlOr in 0M . The COFFCC Sil iS StgF ) temporarily and used to drive a selected CCD (71,72 or 73) corresp. to the direction of viewing. ADVANTAGE - Accuracy is enhanced by elimination of detrimental interference signals produced by optical systems.
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机译：红外二极管（48）的发射经过准直（50）并从角膜反射，然后通过半透明镜（53）返回到放大透镜（44），五角棱镜（40），补偿棱镜（59），衰减透镜（ 60）和CCD图像传感器（63）与眼睛的瞳孔（45）光学共轭。视频信号被放大（65），数字化（66）并通过对先前在0M中的SlOr的误差信号进行减法（67）来校正。 COFFCC Sil iS StgF）暂时用于驱动选定的CCD（71,72或73）。向观看的方向。优势-通过消除光学系统产生的有害干扰信号来提高准确性。
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