Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1996-01-22
1998-04-07
Mai, Huy
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351211, 351221, A61B 314, A61B 310
Patent
active
057370583
ABSTRACT:
An eye examination apparatus comprises an ultrasonic transmitter for transmitting ultrasonic wave radiation to an area around an eye to be examined, an ultrasonic receiver for receiving the reflected wave radiation of the ultrasonic wave radiation, and a judging device for judging whether the eye to be examined is the right eye or the left eye based on the result of the reception by the ultrasonic receiver.
REFERENCES:
patent: 5561482 (1996-10-01), Miyake
Iki Yoichi
Miyake Nobuyuki
Umemura Izumi
Yamashita Seiho
Mai Huy
Nikon Corporation
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