Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1987-12-24
1989-08-22
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351212, A61B 310
Patent
active
048590517
ABSTRACT:
An eye testing apparatus, in which a cornea reflecting image and a retina reflecting image formed by projecting each target mark image onto a cornea and a retina of an eye to be tested are projected to a slight receiving portion through a measuring optical system, and in which a corneal configuration and a refractive power of the eye to be tested are measured according to a signal detected by the light receiving portion, characterized in that the light receiving portion includes a two-dimensional light receiving element, the measuring optical system simultaneously projecting the cornea reflecting image and the retina reflecting image to different areas of the two-dimensional light receiving element.
Fukuma Yasufumi
Kato Yasuo
Kitao Ikuo
Bovernick Rodney B.
Tokyo Kogaku Kikai Kabushiki Kaisha
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