公开(公告)号：US6070981A

公开(公告)日：2000-06-06

申请号：US190831

申请日：1998-11-12

申请人： Toshifumi Mihashi ,  Takefumi Hayashi

发明人： Toshifumi Mihashi ,  Takefumi Hayashi

IPC分类号： A61B3/10 ,  A61B3/107 ,  A61B3/15

CPC分类号： A61B3/1015 ,  A61B3/107 ,  A61B3/152

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。

公开(公告)号：US07635186B2

公开(公告)日：2009-12-22

申请号：US11681420

申请日：2007-03-02

申请人： Mariko Kobayashi ,  Tatsuo Yamaguchi ,  Toshifumi Mihashi

发明人： Mariko Kobayashi ,  Tatsuo Yamaguchi ,  Toshifumi Mihashi

IPC分类号： A61B3/10

CPC分类号： A61B3/1015

摘要： There is provided a Shack-Hartmann wavefront sensor which can repetitively perform a measurement at high speed and at short measurement intervals. An illuminating optical system includes a first polarizing optical member to alternately change a polarization condition to a first polarized light or a second polarized light, and illuminates a pulse light from a laser light source part to an ocular fundus of a subject eye through a first polarizing optical member. A light receiving optical system includes a second polarizing optical member to select each polarized light component of the reflected light from the subject eye illuminated according to the polarization condition of the first polarizing optical member, and a first and a second light receiving parts to alternately receive the reflected light of the selected polarized light component. An ophthalmologic measuring apparatus measures the wavefront aberration of the subject eye at short intervals based on the output of the first and the second light receiving parts.

摘要翻译： 提供了Shack-Hartmann波前传感器，可以在高速和短的测量间隔内重复执行测量。 照明光学系统包括：第一偏振光学构件，用于交替地将偏振状态改变为第一偏振光或第二偏振光，并且通过第一偏振将来自激光源部分的脉冲光照射到被摄体眼睛的眼底 光学构件。 光接收光学系统包括：第二偏振光学构件，用于选择根据第一偏振光学构件的偏振状态照亮的来自被摄体的反射光的各个偏振光分量;以及第一和第二光接收部，交替地接收 所选择的偏振光分量的反射光。 眼科测量装置基于第一和第二光接收部分的输出以短的间隔测量被检眼的波前像差。

公开(公告)号：US07500754B2

公开(公告)日：2009-03-10

申请号：US11797124

申请日：2007-05-01

申请人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

发明人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

IPC分类号： A61B3/10 ,  A61B3/14

CPC分类号： A61B3/156

摘要： Light from a light source is divided into S-polarization and P-polarization light. The P-polarization light is incident to a retinal illumination system for high-power image and the S-polarization light is incident to a retinal illumination system for low-power image. These lights are set center illumination and ring illumination by aperture diaphragms. Reflection light flux from a cornea under the high-power retina illumination light passes through the center of a perforated mirror, and thus light reflected from the retina and the perforated mirror is received through a high-power optical system to achieve an excellent retinal image having no flare. Likewise, reflection light flux from the cornea under the low-power retina illumination light is reflected from the perforated mirror, and thus light reflected from the retina and passing through the center of the hole is received through a low-power optical system to achieve an excellent retinal image having no flare.

摘要翻译： 来自光源的光被分为S偏振光和P偏振光。 P偏振光入射到用于大功率图像的视网膜照明系统，并且S偏振光入射到用于低功率图像的视网膜照明系统。 这些灯是通过孔径光阑设置中心照明和环形照明。 来自大功率视网膜照明光下的角膜的反射光通量穿过穿孔镜的中心，因此通过高功率光学系统接收从视网膜反射的光和穿孔镜，以获得优异的视网膜图像， 没有耀斑。 类似地，来自低功率视网膜照明光下的角膜的反射光通量从多孔镜反射，从而从视网膜反射并穿过孔的中心的光通过低功率光学系统被接收以实现 优秀的视网膜图像没有耀斑。

公开(公告)号：US20070236659A1

公开(公告)日：2007-10-11

申请号：US11697000

申请日：2007-04-05

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 ,  A61B3/103

摘要： A pulse light source section outputs a plurality of pulse light according to the exposure timing of a retina imaging device. A retina illumination system illuminates the retina of an eye under measurement with the pulse light. A wavefront compensation system illuminates the eye and measures aberrations from a light reflected from the eye. The wavefront compensation system uses a wavefront compensation device and other components to compensate to cancel out measured aberrations. A retina imaging device receives a light which was reflected from the retina and of which the aberrations have been compensated for. A retina observation system forms an image of the retina on the retina imaging device with a light which was reflected and compensated. With the plurality of pulse light output from the pulse light source section, a plurality of consecutive retina images are obtained.

摘要翻译： 脉冲光源部根据视网膜成像装置的曝光定时输出多个脉冲光。 视网膜照明系统用脉冲光照射测量眼睛的视网膜。 波前补偿系统照亮眼睛，并测量从眼睛反射的光线的像差。 波前补偿系统使用波前补偿装置和其他组件进行补偿以抵消测量的像差。 视网膜成像装置接收从视网膜反射并且其像差被补偿的光。 视网膜观察系统利用反射和补偿的光在视网膜成像装置上形成视网膜的图像。 利用从脉冲光源部输出的多个脉冲光，获得多个连续的视网膜图像。

公开(公告)号：US07270415B2

公开(公告)日：2007-09-18

申请号：US10554944

申请日：2004-04-22

申请人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

发明人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

IPC分类号： A61B3/10

CPC分类号： G02B26/06 ,  A61B3/1015 ,  A61B3/145 ,  G02B21/0004

摘要： It is possible to improve the quality of an image of an eyeground, thereby acquiring an optimal image. An eyeground observation system (3) acquires an eyeground image via a compensation optical section (70) correcting the image of the eyeground obtained by illumination of an eyeground illumination system (2). A wave front correction system (1) measures wave front measurement data including a wave front aberration of the eye to be checked and/or aberration to be corrected, thereby acquiring the optical characteristic of the eye to be checked. An image data formation section (14-2) performs simulation of viewing at the eyeground, thereby calculating the simulation image data or MTF data. A correction amount decision section (14-3) decides a correction amount according to a voltage change template stored in a memory (14-4) and outputs it to a control section (15). Moreover, the correction amount decision section (14-3) uses the simulation result for a plurality of voltage change templates so as to calculate a value indicating the matching degree of the pattern or MTF data corresponding to a spatial frequency of cells of the eyeground and decide an appropriate correction amount

摘要翻译： 可以提高眼睛的图像的质量，从而获得最佳图像。 眼睛观察系统（3）经由补偿光学部件（70）获取校正通过照明眼睛照射系统（2）获得的眼睛的图像的摄像图像。 波前校正系统（1）测量包括要检查的眼睛的波前像差和/或要校正的像差的波前测量数据，从而获取要检查的眼睛的光学特性。 图像数据形成部（14-2）在眼底进行观察的模拟，从而计算模拟图像数据或MTF数据。 校正量判定部（14-3）根据存储在存储器（14〜4）中的电压变化模板来决定校正量，并将其输出到控制部（15）。 此外，校正量判定部（14-3）使用多个电压变化模板的模拟结果，以计算表示与眼睛的细胞的空间频率相对应的图案或MTF数据的匹配度的值，以及 决定适当的修正量

公开(公告)号：US20070030447A1

公开(公告)日：2007-02-08

申请号：US10554944

申请日：2004-04-22

申请人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

发明人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

IPC分类号： A61B3/14

CPC分类号： G02B26/06 ,  A61B3/1015 ,  A61B3/145 ,  G02B21/0004

摘要： It is possible to improve the quality of an image of an eyeground, thereby acquiring an optimal image. An eyeground observation system (3) acquires an eyeground image via a compensation optical section (70) correcting the image of the eyeground obtained by illumination of an eyeground illumination system (2). A wave front correction system (1) measures wave front measurement data including a wave front aberration of the eye to be checked and/or aberration to be corrected, thereby acquiring the optical characteristic of the eye to be checked. An image data formation section (14-2) performs simulation of viewing at the eyeground, thereby calculating the simulation image data or MTF data. A correction amount decision section (14-3) decides a correction amount according to a voltage change template stored in a memory (144) and outputs it to a control section (15). Moreover, the correction amount decision section (14-3) uses the simulation result for a plurality of voltage change templates so as to calculate a value indicating the matching degree of the pattern or MTF data corresponding to a spatial frequency of cells of the eyeground and decide an appropriate correction amount

摘要翻译： 可以提高眼睛的图像的质量，从而获得最佳图像。 眼睛观察系统（3）经由补偿光学部件（70）获取校正通过照明眼睛照射系统（2）获得的眼睛的图像的摄像图像。 波前校正系统（1）测量包括要检查的眼睛的波前像差和/或要校正的像差的波前测量数据，从而获取要检查的眼睛的光学特性。 图像数据形成部（14-2）在眼底进行观察的模拟，从而计算模拟图像数据或MTF数据。 校正量判定部（14-3）根据存储在存储器（144）中的电压变化模板来决定校正量，并将其输出到控制部（15）。 此外，校正量决定部（14-3）使用多个电压变化模板的模拟结果，以计算表示与眼睛的细胞的空间频率对应的图案或MTF数据的匹配度的值，以及 决定适当的修正量

公开(公告)号：US20060215111A1

公开(公告)日：2006-09-28

申请号：US10549854

申请日：2004-03-31

申请人： Toshifumi Mihashi

发明人： Toshifumi Mihashi

IPC分类号： A61B3/10 ,  A61B3/14

CPC分类号： A61B3/103

摘要： A refraction measuring instrument for measuring the refraction of an eye to be examined while the subject is viewing an external object in a more natural posture. A measuring light beam from a light source 21 is reflected from a mirror 25, shaped into a beam with a ring cross section, directed to a free curved surface prism 31 along an optical axis O2, reflected from a surface 31b and a beam splitting surface 31a, guided to an eye E along an optical axis O1 together with the visible light from outside the instrument, and form a ring pattern on the fundus F. The measurement beam reflected from the fundus F is received by a CCD 23 through the free curved surface prism 31 and a prism 22, and a ring pattern is imaged. A calculation control device 4 analyzes the imaged ring pattern and calculates the sphericity, the degree of astigmatism, and the astigmatic axis angle. For measurement, the subject A wears the refraction measuring instrument 1 on the head H through a wearing section 1a.

摘要翻译： 一种折射测量仪器，用于在受试者以更自然的姿势观察外部物体时测量待检查的眼睛的折射。 来自光源21的测量光束从反射镜25反射成形为具有环形横截面的光束，该光束指向从表面31b反射的光轴O 2的自由弯曲表面棱镜31和光束 分割面31a，沿着光轴O 1与来自仪器外部的可见光一起被引导到眼睛E，并且在眼底F上形成环形图案。从眼底F反射的测量光束由CCD 23 通过自由曲面棱镜31和棱镜22成像环形图案。 计算控制装置4分析成像的环形图案并计算球形度，像散度和像散角度角。 为了测量，受试者A通过穿戴部分1a将折射测量仪器1穿在头部H上。

公开(公告)号：US5847806A

公开(公告)日：1998-12-08

申请号：US893376

申请日：1997-07-21

申请人： Toshifumi Mihashi

发明人： Toshifumi Mihashi

IPC分类号： A61B3/14 ,  A61B3/10

CPC分类号： A61B3/145

摘要： The present invention relates to ophthalmological apparatuses more specifically intends to provide an ophthalmological apparatus for forming a sectional image signal of a measurement object part within the subject's eye. A luminous flux separating means separates light from a first fiber into a reference optical fiber and a measuring optical fiber and a reference reflecting mirror reflects light from the reference optical fiber, and a detecting optical fiber combines light emitted from the measuring optical fiber and reflected from an eyeground of the subject's eye and led to the measuring optical fiber and light reflected by the reference reflecting mirror and led to the reference optical fiber and leads the combined light to a light receiver, and a light reflecting member detachably arranged in the optical path leads light from the light outgoing end surface of the measuring optical fiber arranged in the conjugate position to the eyeground of the subject's eye onto one optical path of the eyeground illumination system or the eyeground observation/photographing optical system.

摘要翻译： 本发明涉及更具体地旨在提供用于形成受检者眼睛内的测量对象部分的截面图像信号的眼科装置的眼科装置。 光束分离装置将光从第一光纤分离成参考光纤，并且测量光纤和参考反射镜反射来自参考光纤的光，并且检测光纤将从测量光纤发射并从 被摄物体的眼睛的眼底，并导致测量光纤和由参考反射镜反射的光，并引导到参考光纤并将组合的光引导到光接收器，以及可拆卸地布置在光路中的光反射部件 布置在共轭位置的测量光纤的光出射端面到被摄体眼睛的眼睛的光到眼睛照射系统或眼睛观察/拍摄光学系统的一个光路上。

公开(公告)号：US20070258045A1

公开(公告)日：2007-11-08

申请号：US11797124

申请日：2007-05-01

申请人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

发明人： Tatsuo Yamaguchi ,  Toshifumi Mihashi

IPC分类号： A61B3/10

CPC分类号： A61B3/156

摘要： Light from a light source is divided into S-polarization and P-polarization light. The P-polarization light is incident to a retinal illumination system for high-power image and the S-polarization light is incident to a retinal illumination system for low-power image. These lights are set center illumination and ring illumination by aperture diaphragms. Reflection light flux from a cornea under the high-power retina illumination light passes through the center of a perforated mirror, and thus light reflected from the retina and the perforated mirror is received through a high-power optical system to achieve an excellent retinal image having no flare. Likewise, reflection light flux from the cornea under the low-power retina illumination light is reflected from the perforated mirror, and thus light reflected from the retina and passing through the center of the hole is received through a low-power optical system to achieve an excellent retinal image having no flare.

摘要翻译： 来自光源的光被分为S偏振光和P偏振光。 P偏振光入射到用于大功率图像的视网膜照明系统，并且S偏振光入射到用于低功率图像的视网膜照明系统。 这些灯是通过孔径光阑设置中心照明和环形照明。 来自大功率视网膜照明光下的角膜的反射光通量穿过穿孔镜的中心，因此通过高功率光学系统接收从视网膜反射的光和穿孔镜，以获得优异的视网膜图像， 没有耀斑。 类似地，来自低功率视网膜照明光下的角膜的反射光通量从多孔镜反射，从而从视网膜反射并穿过孔的中心的光通过低功率光学系统被接收以实现 优秀的视网膜图像没有耀斑。

公开(公告)号：US07281797B2

公开(公告)日：2007-10-16

申请号：US11155903

申请日：2005-06-20

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： An eye-anterior-part observation system receives light reflected from an eye anterior part of the eye under measurement illuminated by an eye-anterior-part illumination light source. A movement-distance calculation section measures the displacement of the eye from an eye anterior image by the eye-anterior-part observation system. A wavefront compensation device compensates the wavefront of light reflected or transmitted. A wavefront-measurement section projects light on the eyeground, and receives light reflected from the eyeground through the wavefront compensation device. A calculation apparatus measures wavefront aberrations, based on the measured displacement of the eye and a light-receiving signal by the wavefront-measurement section. A wavefront-compensation-device control apparatus generates a control signal based on the wavefront aberration, and outputs to the wavefront compensation device to compensate the wavefront. A stage with a motor moves the wavefront compensation device in a direction transversing the optical axis of the reflected light, based on the displacement of the eye.

摘要翻译： 眼前部分观察系统接收由眼前部照明光源照射的测量下从眼睛的眼前部反射的光。 运动距离计算部分通过眼前部观察系统测量眼睛从眼前图像的位移。 波前补偿装置补偿反射或发射的光的波前。 波前测量部分投射眼睛上的光，并通过波前补偿装置接收从眼底反射的光。 计算装置基于测量的眼睛的位移和波前测量部分的光接收信号来测量波前像差。 波前补偿装置控制装置基于波前像差产生控制信号，并输出到波前补偿装置以补偿波前。 基于眼睛的位移，具有电动机的平台沿着横过反射光的光轴的方向移动波前补偿装置。