Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2006-03-14
2006-03-14
Winakur, Eric F. (Department: 3737)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C351S205000, C351S215000
Reexamination Certificate
active
07011411
ABSTRACT:
An eye's optical characteristic measuring system, comprising a target projecting system for projecting a target image to an ocular fundus of an eye under test, a photodetection optical system for guiding the target image to a photoelectric detector, a simulation image calculating unit for calculating images of the target image to be formed when a plurality of target images of different sizes are independently projected to the fundus of the eye under test based on light amount intensity distribution of the target image detected at the photoelectric detector, and a visual acuity calculating unit having a predetermined threshold value and used for detecting light amount distribution characteristics from each of the light amount intensity distribution in a predetermined longitudinal direction of a plurality of target images calculated at the simulation image calculating unit and for calculating a visual acuity value of a person under test from an intersection of the light amount distribution characteristics and the threshold value.
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Kobayashi Katsuhiko
Kubotera Yumi
Shibutani Masahiro
Takeuchi Gaku
Kabushiki Kaisha TOPCON
Nields & Lemack
Sanders John R.
Winakur Eric F.
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