Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2007-08-28
2007-08-28
Dang, Hung (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C351S206000
Reexamination Certificate
active
11352730
ABSTRACT:
An eye's optical characteristics measuring system, comprising a target projecting means for projecting a target image on a fundus of an eye under test, a photodetecting means for guiding the target image toward a photoelectric detector, a pupil diameter measuring means, a calculating means for calculating optical characteristics of the eye under test according to distribution of optical intensity obtained based on an image acquired by the photoelectric detector, and an aperture selecting means provided on each of the target projecting means and the photodetecting means, wherein the aperture selecting means is independently driven, and apertures to restrict a projecting luminous flux and a photodetecting luminous flux are selected based on a pupil diameter of the eye under test measured by the pupil diameter measuring means.
REFERENCES:
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Kobayashi Katsuhiko
Nishio Kouji
Shibutani Masahiro
Takeuchi Gaku
Dang Hung
Hasan M.
Kabushiki Kaisha TOPCON
Nields & Lemack
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