公开(公告)号：US07249852B2

公开(公告)日：2007-07-31

申请号：US10648827

申请日：2003-08-27

申请人： Toshifumi Mihashi ,  Yoko Hirohara

发明人： Toshifumi Mihashi ,  Yoko Hirohara

IPC分类号： A61B3/10

CPC分类号： A61B3/1015

摘要： Measurement of an eye characteristic is performed more accurately and at high speed by setting a measurement condition of a light receiving optical system with a long focal point or high sensitivity on the basis of an optical characteristic measured by a light receiving optical system with a short focal point or low sensitivity or high density. The optical characteristic of the subject eye is obtained on the basis of an output of a first light receiving part and/or a second light receiving part, and a change direction of the beam is estimated on the basis of an output signal from the second light receiving part.

摘要翻译： 基于由具有短焦点的光接收光学系统测量的光学特性，通过设置具有长焦点或高灵敏度的光接收光学系统的测量条件，更准确地并且高速地执行眼睛特性的测量 点或低灵敏度或高密度。 基于第一光接收部分和/或第二光接收部分的输出获得被检眼的光学特性，并且基于来自第二光的输出信号来估计光束的改变方向 接收部分。

公开(公告)号：US07219999B2

公开(公告)日：2007-05-22

申请号：US10494722

申请日：2002-10-11

申请人： Yoko Hirohara ,  Toshifumi Mihashi

发明人： Yoko Hirohara ,  Toshifumi Mihashi

IPC分类号： A61B3/10 ,  A61B3/00

CPC分类号： A61B3/1015 ,  A61B3/12

摘要： The position of an object surface is detected with an error reduced on a reflectance boundary surface. A first light source (100) emits the luminous flux of the first wavelength. A first illumination optical system (200A) illuminates a small area on a retina (61) to be examined by the first luminous flux from the first light source (100). A first reception optical system (300A) guides a part of the luminous flux which is reflected by and returning from the retina (61) to be examined to a first light reception part (510) via a first conversion member (400) for converting the reflected luminous flux into at least 17 beams. A second light source (110) emits the luminous flux of the second wavelength. A second illumination optical system (200B) illuminates a predetermined area on the retina (61) to be examined by the second luminous flux from the second light source (110). A second reception optical system (300B) guides the second luminous flux reflected by and returning from the retina (61) to a second light reception part (520). A display part checks at which position on the fundus oculi (61) of the eye (60) the luminous flux for measurement is converged or fixed, and the position of convergence and the position of measurement are changed by using a drive unit to move a fixation mark or the irradiation position of the irradiation light for Hartmann measurement.

摘要翻译： 在反射率边界表面上以误差减小来检测物体表面的位置。 第一光源（100）发射第一波长的光通量。 第一照明光学系统（200A）照射通过来自第一光源（100）的第一光束检查的视网膜（61）上的小区域。 第一接收光学系统（300A）经由用于转换的第一转换构件（400）将被检查的视网膜（61）反射并返回的部分光束引导到第一光接收部（510） 反射光通量至少为17束。 第二光源（110）发射第二波长的光通量。 第二照明光学系统（200B）照射来自第二光源（110）的由第二光束检查的视网膜（61）上的预定区域。 第二接收光学系统（300B）将从视网膜（61）反射并从视网膜（61）返回的第二光束引导到第二光接收部（520）。 显示部件检查眼睛（60）的眼底（61）上的哪个位置会聚或固定用于测量的光通量，并且通过使用驱动单元来移动收敛位置和测量位置来改变 固定标记或用于Hartmann测量的照射光的照射位置。

公开(公告)号：US20060170865A1

公开(公告)日：2006-08-03

申请号：US10544229

申请日：2004-01-29

申请人： Yoko Hirohara ,  Toshifumi Mihashi

发明人： Yoko Hirohara ,  Toshifumi Mihashi

IPC分类号： A61B3/10

CPC分类号： A61B3/0025

摘要： It is possible to estimate optical characteristic according to a pupil diameter in daily life of an examinee, correction data near to the optimal prescription value, eyesight, and sensitivity. A calculation section receives measurement data indicating refractive power distribution of an eye to be examined and pupil data on the eye and calculates lower order and higher order aberrations according to the measurement data and the pupil data (S101 to 105). For example, a pupil edge is detected from the anterior ocular segment image and a pupil diameter is calculated. By using this pupil diameter, lower order and higher order aberrations are calculated. According to the lower order and higher order aberrations obtained, the calculation section performs simulation of a retina image by using high contrast or low contrast target and estimates the eyesight by comparing the result to a template and/or obtains sensitivity (S107). Alternatively, according to the lower order and the higher order aberraations obtained, the calculation section calculates an evaluation parameter indicating the quality of visibility by the eye to be examined such as the Strehl ratio, the phase shift (PTF), and the visibility by comparison of the retina image simulation with the template. According to the evaluation parameter calculated, the calculation section changes the lower order aberration amount so as to calculate appropriate correction data for the eye to be examined (S107). The calculation section outputs data such as the eyesight, sensitivity, correction data, and the simulation result to a memory or a display section (S109).

摘要翻译： 可以根据受检者的日常生活中的瞳孔直径估计光学特性，接近最佳处方值的校正数据，视力和灵敏度。 计算部分接收指示要检查的眼睛的屈光度分布和眼睛上的瞳孔数据的测量数据，并根据测量数据和瞳孔数据计算低阶和高阶像差（S101至105）。 例如，从前眼部图像检测瞳孔边缘，并计算瞳孔直径。 通过使用该瞳孔直径，计算较低阶和高次像差。 根据获得的较低阶和高阶像差，计算部通过使用高对比度或低对比度目标进行视网膜图像的模拟，并通过将结果与模板进行比较和/或获得灵敏度来估计视力（S107）。 或者，根据获得的较低阶和高阶像差，计算部通过比较来计算表示被检眼的可见度的评价参数，例如Strehl比，相位偏移（PTF）和可见度 的视网膜图像模拟与模板。 根据计算出的评价参数，计算部分改变低阶像差量，以便计算用于被检眼的适当校正数据（S107）。 计算部分将诸如视力，灵敏度，校正数据和模拟结果的数据输出到存储器或显示部分（S109）。

公开(公告)号：US20060082725A1

公开(公告)日：2006-04-20

申请号：US10525321

申请日：2003-08-25

申请人： Tatsuo Yamaguchi ,  Naoyuki Maeda ,  Toshifumi Mihashi ,  Yoko Hirohara

发明人： Tatsuo Yamaguchi ,  Naoyuki Maeda ,  Toshifumi Mihashi ,  Yoko Hirohara

IPC分类号： A61B3/00

CPC分类号： A61B3/1015

摘要： Optical performance in a case where not only higher order aberrations but also lower order aberrations are added, are evaluated, lower order aberration quantities in which for example, a Strehi ratio is large and/or a phase shift is decreased, is calculated, and correction data, such as S, C and A, at that time is obtained, so that a result closer to a subjective value is obtained. An arithmetic part receives measurement data indicating a refractive power distribution of a subject eye and obtains lower order aberrations and higher order aberrations on the basis of the measurement data (S401, S403). The arithmetic part judges whether the higher order aberrations have a specified value or higher (S405). The arithmetic part changes, in a case where the higher order aberrations have the specified values or higher, lower order aberration quantities corresponding to the higher, lower aberrations having the specified values or higher, obtains appropriate correction data suitable for the subject eye (S407 to S417), and obtains the correction data (S419).

摘要翻译： 在不仅增加高阶像差而且增加低阶像差的情况下的光学性能被评估，计算例如Strehi比大和/或相移减小的较低阶像差量，并且校正 得到此时的数据S，C和A，从而获得更接近主观值的结果。 运算部接收表示被检眼的屈光度分布的测定数据，并根据测定数据求出低阶像差和高次像差（S 401，S 403）。 运算部判定高阶像差是否具有规定值以上（S 405）。 算术部分在高阶像差具有指定值或更高的情况下，改变对应于具有特定值或更高值的较高像素的较低像差量，获得适于对象眼的适当校正数据（S 407 到S 417），并获得校正数据（S 419）。

公开(公告)号：US20050270490A1

公开(公告)日：2005-12-08

申请号：US10527447

申请日：2003-09-10

申请人： Toshifumi Mihashi ,  Yoko Hirohara

发明人： Toshifumi Mihashi ,  Yoko Hirohara

IPC分类号： A61B3/10 ,  A61B3/103 ,  A61B3/00

CPC分类号： A61B3/1015 ,  A61B3/0025

摘要： The low-order aberration leading to better visual acuity is calculated from the results of measurement of an eye characteristic by an eye characteristic measuring instrument that can measure up to the high-order aberration, and data on a correction factor is collected, thereby obtaining a result more approximate to the subjective value. According to at least measurement data representing the wave aberration of the eye being examined (S401, S403), an image data creating unit creates optotype retina image data by conducting simulation of the visual acuity of an optotype (S405), considering the correction factor for refraction correction. A correction factor setting unit sets a correction factor to be given to the image data creating unit (S417). A judging unit judges from the correction opotype retina image data corrected by the correction factor whether or not an adequate correction factor is set (S407 to S421). The correction factor setting unit sets a correction factor on the basis of the results of judgment by the judging unit, and changes the correction factor until the judging unit judge that the correction factor is adequate.

摘要翻译： 通过可以测量高阶像差的眼睛特性测量仪器的眼睛特性的测量结果计算导致更好视力的低阶像差，并且收集关于校正因子的数据， 结果更接近主观价值。 根据至少表示被检查眼睛的波像的测量数据（S401，S403），图像数据生成单元通过对视标的视敏度进行模拟来生成视标视网膜图像数据（S405），考虑到校正因子 折射校正。 校正因子设定单元设定要赋予图像数据生成单元的校正系数（S417）。 判断单元从校正因子校正的校正型视网膜图像数据判断是否设定了适当的校正因子（S407〜S421）。 校正因子设定单元基于判断单元的判断结果来设定校正系数，并且改变校正因子，直到判断单元判断校正因子是否足够。

公开(公告)号：US20050099599A1

公开(公告)日：2005-05-12

申请号：US10648827

申请日：2003-08-27

申请人： Toshifumi Mihashi ,  Yoko Hirohara

发明人： Toshifumi Mihashi ,  Yoko Hirohara

IPC分类号： A61B3/10 ,  A61B3/103

CPC分类号： A61B3/1015

摘要： Measurement of an eye characteristic is performed more accurately and at high speed by setting a measurement condition of a light receiving optical system with a long focal point or high sensitivity on the basis of an optical characteristic measured by a light receiving optical system with a short focal point or low sensitivity or high density. An eye characteristic measuring apparatus includes a first illuminating optical system for illuminating a retina of a subject eye with a light flux from a light source part, a first light receiving optical system for receiving a light flux through a first conversion member with a long focal point or high sensitivity for converting a reflected light flux from the subject eye into plural beams, a second light receiving optical system for receiving a light flux through a second conversion member with a short focal point or low sensitivity or high density for converting the reflected light flux from the subject eye into plural beams, a first light receiving part for receiving the received light flux of the first light receiving optical system, and a second light receiving part for receiving the received light flux of the second light receiving optical system. The optical characteristic of the subject eye is obtained on the basis of an output of the first light receiving part and/or the second light receiving part, and a change direction of the beam is estimated on the basis of an output signal from the second light receiving part.

摘要翻译： 基于由具有短焦点的光接收光学系统测量的光学特性，通过设置具有长焦点或高灵敏度的光接收光学系统的测量条件，更准确地并且高速地执行眼睛特性的测量 点或低灵敏度或高密度。 眼睛特征测量装置包括：第一照明光学系统，用于利用来自光源部分的光束照射被检眼的视网膜;第一光接收光学系统，用于通过具有长焦点的第一转换部件接收光通量 或用于将来自被摄体眼睛的反射光束转换成多个光束的高灵敏度;第二光接收光学系统，用于接收具有短焦点或低灵敏度或高密度的第二转换构件的光通量，用于转换反射光通量 从目标眼睛到多个光束，用于接收第一光接收光学系统的接收光束的第一光接收部分和用于接收第二光接收光学系统的接收光束的第二光接收部分。 基于第一光接收部分和/或第二光接收部分的输出获得被检眼的光学特性，并且基于来自第二光的输出信号来估计光束的改变方向 接收部分。

公开(公告)号：US07648240B2

公开(公告)日：2010-01-19

申请号：US12052406

申请日：2008-03-20

申请人： Naoki Nakazawa ,  Koji Nakajima ,  Toshifumi Mihashi

发明人： Naoki Nakazawa ,  Koji Nakajima ,  Toshifumi Mihashi

IPC分类号： A61B3/10

CPC分类号： A61B3/107

摘要： An ophthalmic apparatus comprises a projection system in which a pattern member is provided with a predetermined pattern for measuring the shape of the cornea of an eye of a subject, the predetermined pattern is thereby projected on the cornea of the eye of the subject, and an optical observation system in which light flux having a shape of the predetermined pattern emitted from the projection system is reflected at the cornea of the eye of the subject, the eye of the subject is observed by the light reflected by the cornea. A surface at the eye of the subject side of the pattern member is coated with a paint having a filtering property that transmits infrared light and blocks visible light.

摘要翻译： 眼科装置包括投影系统，其中图案构件设置有用于测量被检体的眼睛的角膜的形状的预定图案，由此将预定图案投影到被检体的眼睛的角膜上， 光学观察系统，其中具有从投影系统发射的预定图案的形状的光束在被摄体的眼睛的角膜上被反射，被角膜反射的光观察被检体的眼睛。 在图案构件的被摄体侧的眼睛的表面涂覆有具有透射红外光并阻挡可见光的滤光性的涂料。

公开(公告)号：US20080231806A1

公开(公告)日：2008-09-25

申请号：US12052406

申请日：2008-03-20

申请人： Naoki Nakazawa ,  Koji Nakajima ,  Toshifumi Mihashi

发明人： Naoki Nakazawa ,  Koji Nakajima ,  Toshifumi Mihashi

IPC分类号： A61B3/107

CPC分类号： A61B3/107

摘要： An ophthalmic apparatus comprises a projection system in which a pattern member is provided with a predetermined pattern for measuring the shape of the cornea of an eye of a subject, the predetermined pattern is thereby projected on the cornea of the eye of the subject, and an optical observation system in which light flux having a shape of the predetermined pattern emitted from the projection system is reflected at the cornea of the eye of the subject, the eye of the subject is observed by the light reflected by the cornea. A surface at the eye of the subject side of the pattern member is coated with a paint having a filtering property that transmits infrared light and blocks visible light.

摘要翻译： 眼科装置包括投影系统，其中图案构件设置有用于测量被检体的眼睛的角膜的形状的预定图案，由此将预定图案投影到被检体的眼睛的角膜上， 光学观察系统，其中具有从投影系统发射的预定图案的形状的光束在被摄体的眼睛的角膜上被反射，被角膜反射的光观察被检体的眼睛。 在图案构件的被摄体侧的眼睛的表面涂覆有具有透射红外光并阻挡可见光的滤光性的涂料。

公开(公告)号：US20070291229A1

公开(公告)日：2007-12-20

申请号：US11812089

申请日：2007-06-14

申请人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

发明人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

IPC分类号： A61B3/10

CPC分类号： A61B3/14

摘要： A first wavelength for measurement is selected from among a plurality of wavelengths. Aberrations at the first wavelength are measured with a wavefront-measurement light source having the first wavelength. A compensation optical section performs compensation so as to cancel out the measured aberrations. After the compensation, a retinal image is obtained from a retina imaging device using a retina illumination light source having the same wavelength as the wavefront-measurement light source. During image-data transfer from the retina imaging device, aberrations at a second wavelength are measured using another wavefront-measurement light source having the second wavelength. The compensation optical section performs compensation so as to cancel out the measured aberrations. After the compensation, a retinal image is obtained using another retina illumination light source having the same wavelength as the another wavefront-measurement light source. A difference image is obtained from the retinal images, and displayed or stored.

摘要翻译： 用于测量的第一波长从多个波长中选择。 用具有第一波长的波前测量光源测量第一波长的像差。 补偿光学部件进行补偿以抵消所测量的像差。 在补偿之后，使用具有与波前测量光源相同波长的视网膜照明光源从视网膜成像装置获得视网膜图像。 在从视网膜成像装置进行图像数据传送期间，使用具有第二波长的另一波前测量光源测量第二波长处的像差。 补偿光学部件进行补偿以抵消所测量的像差。 在补偿之后，使用具有与另一个波前测量光源相同的波长的另一个视网膜照明光源获得视网膜图像。 从视网膜图像获得差异图像，并显示或存储。

公开(公告)号：USRE39882E1

公开(公告)日：2007-10-16

申请号：US10163825

申请日：2003-01-30

申请人： Toshifumi Mihashi ,  Takefumi Hayashi

发明人： Toshifumi Mihashi ,  Takefumi Hayashi

IPC分类号： A61B3/10

CPC分类号： A61B3/10 ,  A61B3/107

摘要： 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.

摘要翻译： 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。