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    • 21. 再颁专利
    • Ophthalmologic characteristic measuring apparatus
    • 眼科特征测量仪器
    • USRE39882E1
    • 2007-10-16
    • US10163825
    • 2003-01-30
    • Toshifumi MihashiTakefumi Hayashi
    • Toshifumi MihashiTakefumi Hayashi
    • A61B3/10
    • A61B3/10A61B3/107
    • Disclosed is an apparatus for precisely measuring optical characteristics of an eye to be examined, particularly an ophthalmologic characteristic measuring apparatus capable of observing a front portion of the eye as well as measuring optical characteristic of an irregular astigmatism component. The apparatus includes a first illuminating optical system, a first receiving optical system, a first converting member, a first light receiving unit, a second illuminating optical system, a second light receiving optical system, a second light receiving unit, and an arithmetic unit. The first illuminating optical system illuminates convergently a portion near the center of curvature of the cornea of an eye to be examined with first illuminating light rays emitted from a first illuminating light source. The first receiving optical system receives the first illuminating light rays reflected back from the cornea of the eye. The first converting member converts the reflected light rays into at least seventeen beams. The first light receiving unit receives a plurality of light beams converted by the first converting member. The second illuminating optical system projects an index having a specific pattern on the cornea of the eye with second illuminating light rays emitted from a second illuminating light source. The second light receiving optical system receives light rays reflected back from the cornea of the eye. The second light receiving unit receives the second illuminating light rays from the second light receiving optical system. The arithmetic unit determines the shape of the cornea near the center of the eye on the basis of an inclination angle of the light rays obtained by the first light receiving unit, and determines the shape of the cornea at the periphery of the eye on the basis of a position of the second light receiving unit, at which position the second light receiving unit receives the second illuminating light rays.
    • 公开了一种用于精确测量被检眼的光学特性的装置,特别是能够观察眼睛的前部以及测量不规则散光成分的光学特性的眼科特征测量装置。 该装置包括第一照明光学系统,第一接收光学系统,第一转换部件,第一光接收单元,第二照明光学系统,第二光接收光学系统,第二光接收单元和运算单元。 第一照明光学系统从第一照明光源发射的第一照明光线会聚地照射被检眼的眼睛的角膜的中心附近的部分。 第一接收光学系统接收从眼睛的角膜反射回来的第一照明光线。 第一转换构件将反射的光线转换成至少十七束。 第一光接收单元接收由第一转换构件转换的多个光束。 第二照明光学系统利用从第二照明光源发射的第二照明光线将具有特定图案的指标投射到眼睛的角膜上。 第二光接收光学系统接收从眼睛的角膜反射回来的光线。 第二光接收单元接收来自第二光接收光学系统的第二照明光线。 算术单元基于由第一光接收单元获得的光线的倾斜角度来确定眼睛中心附近的角膜的形状,并且基于眼睛的周边确定角膜的形状 第二光接收单元的位置处于第二光接收单元接收第二照明光线的位置。
    • 22. 发明申请
    • Optical instrument
    • 光学仪器
    • US20050018136A1
    • 2005-01-27
    • US10343327
    • 2001-08-08
    • Takefumi Hayashi
    • Takefumi Hayashi
    • A61B3/10A61B3/103A61B3/107
    • A61B3/103A61B3/107
    • An optical instrument comprising an eye refractive power measurement index optical system (50) for projecting an eye refractive power index in order to measure the refractive power of an eye (E) to be examined, a fixed index projecting optical system (10) for fixing/fogging the eye (E), an observation optical system (40) for observing the eye (E), a light receiving optical system (60), a ring plate (30) and an infrared LED (34) for projecting a cornea shape index used to measure the cornea shape of the eye (E), a ring plate (80) and an infrared LED (84) for projecting light to the center of the cornea via an objective lens (22), and an alignment index projecting optical system (70), whereby it is possible to project part of the cornea shape index onto the cornea (Ec) of the eye to be examined via the objective lens (22) of the observation optical system (40) for observation.
    • 一种光学仪器,包括用于投射眼睛屈光度指数的眼睛屈光度测量指标光学系统(50),以便测量要检查的眼睛(E)的屈光度,用于固定的固定折射率投影光学系统(10) (E),用于观察眼睛(E)的观察光学系统(40),光接收光学系统(60),环形板(30)和用于投影角膜形状的红外LED(34) 用于测量眼睛的角膜形状的指数(E),用于经由物镜(22)将光投射到角膜的中心的环形板(80)和红外LED(84),以及对准折射率投影光学 系统(70),由此可以通过观察光学系统(40)的物镜(22)将角膜形状指数的一部分投射到要检查的眼睛的角膜(Ec)上,以进行观察。
    • 23. 发明授权
    • Ocular refractive-power measuring device
    • 眼屈光力测量装置
    • US06409344B1
    • 2002-06-25
    • US09612626
    • 2000-07-07
    • Takefumi Hayashi
    • Takefumi Hayashi
    • A61B314
    • A61B3/103A61B3/14
    • An ocular refractive-power measuring device includes: an alignment unit effecting alignment between a vertex of a cornea and a device body on the basis of corneal reflecting light; a refractive power measuring unit measuring the refractive power of an eye to be examined on the basis of the shape of a pattern light rays for ocular refractive power measurement reflected from a fundus of the eye to be examined; a storage unit storing the shape of the pattern light rays for ocular refractive power measurement; and an eclipse direction detecting system detecting the presence or absence of an eclipse in the pattern light rays due to a pupil of the eye to be examined on the basis of the shape of the pattern light rays stored in the storage unit, and detecting a direction of the eclipse. This alignment unit is arranged to effect adjustment of alignment between the pupil of the eye to be examined and the device body by adjustably moving the position of the device body on the basis of a result of detection by the eclipse direction detecting system.
    • 眼屈光力测量装置包括:对准单元,其基于角膜反射光影响角膜顶点与装置体之间的对准; 折射力测量单元,其基于从待检眼睛的眼底反射的用于眼屈光力测量的图案光的形状来测量被检眼的屈光度; 存储单元,其存储用于眼屈光力测量的图案光线的形状; 以及日食方向检测系统,其基于存储在存储单元中的图案光线的形状,检测由于要检查的眼睛的瞳孔而导致的图案光线中的日食的存在或不存在,并且检测方向 的日食 该对准单元被配置为通过基于由食蚀方向检测系统的检测结果可调地移动装置主体的位置来实现被检眼睛的瞳孔与装置体之间的对准的调整。
    • 24. 发明授权
    • Ophthalmologic characteristic measuring apparatus
    • 眼科特征测量仪器
    • US6070981A
    • 2000-06-06
    • US190831
    • 1998-11-12
    • Toshifumi MihashiTakefumi Hayashi
    • Toshifumi MihashiTakefumi Hayashi
    • A61B3/10A61B3/107A61B3/15
    • A61B3/1015A61B3/107A61B3/152
    • Disclosed is an apparatus for precisely measuring optical characteristics of an eye to be examined, particularly an ophthalmologic characteristic measuring apparatus capable of observing a front portion of the eye as well as measuring optical characteristic of an irregular astigmatism component. The apparatus includes a first illuminating optical system, a first receiving optical system, a first converting member, a first light receiving unit, a second illuminating optical system, a second light receiving optical system, a second light receiving unit, and an arithmetic unit. The first illuminating optical system illuminates convergently a portion near the center of curvature of the cornea of an eye to be examined with first illuminating light rays emitted from a first illuminating light source. The first receiving optical system receives the first illuminating light rays reflected back from the cornea of the eye. The first converting member converts the reflected light rays into at least seventeen beams. The first light receiving unit receives a plurality of light beams converted by the first converting member. The second illuminating optical system projects an index having a specific pattern on the cornea of the eye with second illuminating light rays emitted from a second illuminating light source. The second light receiving optical system receives light rays reflected back from the cornea of the eye. The second light receiving unit receives the second illuminating light rays from the second light receiving optical system. The arithmetic unit determines the shape of the cornea near the center of the eye on the basis of an inclination angle of the light rays obtained by the first light receiving unit, and determines the shape of the cornea at the periphery of the eye on the basis of a position of the second light receiving unit, at which position the second light receiving unit receives the second illuminating light rays.
    • 公开了一种用于精确测量被检眼的光学特性的装置,特别是能够观察眼睛的前部以及测量不规则散光成分的光学特性的眼科特征测量装置。 该装置包括第一照明光学系统,第一接收光学系统,第一转换部件,第一光接收单元,第二照明光学系统,第二光接收光学系统,第二光接收单元和运算单元。 第一照明光学系统从第一照明光源发射的第一照明光线会聚地照射被检眼的眼睛的角膜的中心附近的部分。 第一接收光学系统接收从眼睛的角膜反射回来的第一照明光线。 第一转换构件将反射的光线转换成至少十七束。 第一光接收单元接收由第一转换构件转换的多个光束。 第二照明光学系统利用从第二照明光源发射的第二照明光线将具有特定图案的指标投射到眼睛的角膜上。 第二光接收光学系统接收从眼睛的角膜反射回来的光线。 第二光接收单元接收来自第二光接收光学系统的第二照明光线。 算术单元基于由第一光接收单元获得的光线的倾斜角度来确定眼睛中心附近的角膜的形状,并且基于眼睛的周边确定角膜的形状 第二光接收单元的位置处于第二光接收单元接收第二照明光线的位置。
    • 25. 发明授权
    • Fundus observation apparatus
    • 眼底观察仪
    • US08622547B2
    • 2014-01-07
    • US13266148
    • 2010-04-02
    • Takefumi Hayashi
    • Takefumi Hayashi
    • A61B3/14A61B3/12
    • A61B3/12A61B3/032A61B3/102A61B3/1225A61B3/14
    • The controller 210 changes the projection region of the Landolt ring T on the fundus Ef by changing, based on the scanning region R, the relative display position of the Landolt ring T and the fixation target V on the LCD 39, thereby overlapping the scanning region R and the projection region each other. Under this condition, the fundus observation apparatus 1 executes the eyesight measurement and OCT measurement, obtains the eyesight value at the site of interest of the fundus Ef, and forms a tomographic image of the fundus Ef in the scanning region R. The controller 210 stores in the storage 212 the eyesight value at the site of interest and the tomographic image corresponding to the scanning line closest to the measurement position of eyesight while correlating them with each other, and allows them to be displayed on the display device 3.
    • 控制器210通过基于扫描区域R,改变Land 39在LCD 39上的Landolt环T和固定目标V的相对显示位置,来改变眼底Ef上的Landolt环T的投影区域,从而与扫描区域 R和投影区域彼此。 在这种情况下,眼底观察装置1执行视力测量和OCT测量,获得眼底Ef的感兴趣部位的视力值,并在扫描区域R中形成眼底Ef的断层图像。控制器210存储 在存储器212中,在感兴趣的位置处的视力值和对应于最接近视力的测量位置的扫描线的断层图像,同时使它们彼此相关,并且允许它们显示在显示装置3上。
    • 27. 发明申请
    • OPTICAL IMAGE MEASURING DEVICE
    • 光学图像测量装置
    • US20110080561A1
    • 2011-04-07
    • US12996935
    • 2009-06-08
    • Takefumi HayashiHitoshi Shimizu
    • Takefumi HayashiHitoshi Shimizu
    • A61B3/14G01B11/02
    • A61B3/1005A61B3/102G01B9/02028G01B9/02085G01B9/02091G01B11/2441
    • An optical image measuring device 1 splits low-coherence light L0 into signal light LS and reference light LR, and splits an optical path of the reference light LR into two optical paths having different optical path lengths to split the reference light LR into two reference lights LRa, LRb. Furthermore, the optical image measuring device 1 makes the reference lights LRa, LRb interfere with the signal light LS propagated through an eye E, generates an interference light LC reflecting a morphology in each of two depth positions (fundus oculi Ef and cornea Ec) of an eye E, and detects the interference light LC to generate a detection signal. Then, the optical image measuring device 1 forms a fundus oculi tomographic image and a cornea tomographic image based on the detection signals, and analyzes the tomographic images to obtain a distance between the cornea and retina of the eye E.
    • 光学图像测量装置1将低相干光L0分解为信号光LS和参考光LR,并将参考光LR的光路分成具有不同光程长度的两个光路,以将参考光LR分成两个参考光 LRa,LRb。 此外,光学图像测量装置1使得参考光LRa,LRb干扰通过眼睛E传播的信号光LS,产生反映两个深度位置(眼底Ef和角膜Ec)中的每一个的形态的干涉光LC 眼睛E,并且检测干涉光LC以产生检测信号。 然后,光学图像测量装置1基于检测信号形成眼底断层图像和角膜断层图像,并分析断层图像以获得眼睛E的角膜和视网膜之间的距离。