Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1991-09-30
1992-05-26
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351211, 351214, 606 4, A61B 310
Patent
active
051161141
ABSTRACT:
An ophthalmologic apparatus can measure the eye axis length of an eye to be examined and other information of the eye to be examined (for example, the cornea refractive power). In the case of the measurement of the eye axis length, when moving a detecting terminal itself by driving means, the driving means is controlled so as to slow down the speed of movement of the detecting terminal when the detecting terminal comes near the cornea of the eye to be examined.
REFERENCES:
patent: 3070997 (1963-01-01), Papritz et al.
patent: 3453998 (1969-07-01), Giglio
patent: 4764006 (1988-08-01), Hamano et al.
Hamano Yoshimasa
Kobayashi Kazunobu
Maruyama Shigeo
Masuda Takashi
Matsumura Isao
Bovernick Rodney B.
Canon Kabushiki Kaisha
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