A solid-state television pupillometer.
An application of an MOS-type solid-state imaging sensor to a television pupillometer is described. Its advantages over the conventional image-tube pupillometers using silicon vidicons are demonstrated with special emphasis on its excellent dynamics performance. Design considerations for an MOS-type solid-state TV camera and the schematic diagram of a pupillometer which detects the horizontal pupillary diameter are presented. Two methods of infrared illumination giving no heat sensation to subjects are also proposed: the effective use of an aquatic filter and solid-state illumination utilizing i.r.-LEDs.
D006801:Humans; D007259:Infrared Rays; D009885:Ophthalmology / Q000295:instrumentation*; D011680:Pupil; D012666:Semiconductors; D013690:Television