Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2007-12-25
2007-12-25
Hasan, M. (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C351S205000, C351S211000
Reexamination Certificate
active
10488790
ABSTRACT:
Scattering can be measured by using an optical system having a Hartman-Shack wave-surface sensor. An eye optical characteristic measuring instrument comprises a light source unit10for emitting a light beam of a wavelength in the near-infrared region, an illumination optical system40for illuminating a small area of the retinal of an eye to be measured with the light beam from the light source unit10, a light-receiving optical system20for receiving a part of the reflected beam of the light beam from the light source unit10reflected from the retina through a converting member for converting the part of the reflected light beam into at least substantially 17 light beams, a light-receiving section23for receiving the received light beam directed by the light-receiving optical system20and generating a signal, and a calculating unit for determining the wavefront aberration of the light beam entering the light-receiving optical system20and the degree of scattering of the received light beam on the basis of the signal from the light-receiving section23.
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Fujikado Takashi
Hirohara Yoko
Maeda Naoyuki
Mihashi Toshifumi
Hasan M.
Kabushiki Kaisha Topcon
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