公开(公告)号：US20120081665A1

公开(公告)日：2012-04-05

申请号：US13323499

申请日：2011-12-12

申请人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

发明人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

IPC分类号： A61B3/14

CPC分类号： A61B3/14

摘要： A fundus camera includes an optical path splitting unit arranged between a focusing unit and an imaging unit. The splitting unit has characteristics adapted to reflect light of a visible light region and to transmit near-infrared light. The splitting unit retreats from an optical path when a still fundus image is photographed. A quick-return mirror having such characteristics is used as the splitting unit. When near-infrared illumination light having a wavelength of about 850 nm is used, such light can be incident upon the imaging unit without loss of the amount of light. Visible light output from an internal fixation target is projected onto a subject's eye. A cornea diaphragm and a crystalline lens diaphragm are used for observing a fundus with invisible light. Each of the cornea diaphragm and crystalline lens diaphragm can be changed to another one having a different diameter.

摘要翻译： 眼底照相机包括布置在聚焦单元和成像单元之间的光路分离单元。 分离单元具有适于反射可见光区域的光并发射近红外光的特性。 当拍摄静止的眼底图像时，分割单元从光路退回。 具有这种特性的快速返回镜被用作分割单元。 当使用具有约850nm波长的近红外照明光时，这种光可以入射到成像单元上而不损失光量。 来自内部固定目标的可见光输出投影到被摄体的眼睛上。 角膜隔膜和晶状体膜片用于观察不透明光的眼底。 每个角膜片和晶状体膜片可以改变为具有不同直径的另一个。

公开(公告)号：US07798642B2

公开(公告)日：2010-09-21

申请号：US12424431

申请日：2009-04-15

申请人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

发明人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

IPC分类号： A61B3/10 ,  A61B3/14

CPC分类号： A61B3/14

摘要： A fundus camera includes an optical path splitting unit arranged between a focusing unit and an imaging unit. The splitting unit has characteristics adapted to reflect light of a visible light region and to transmit near-infrared light. The splitting unit retreats from an optical path when a still fundus image is photographed. A quick-return mirror having such characteristics is used as the splitting unit. When near-infrared illumination light having a wavelength of about 850 nm is used, such light can be incident upon the imaging unit without loss of the amount of light. Visible light output from an internal fixation target is projected onto a subject's eye. A cornea diaphragm and a crystalline lens diaphragm are used for observing a fundus with invisible light. Each of the cornea diaphragm and crystalline lens diaphragm can be changed to another one having a different diameter.

摘要翻译： 眼底照相机包括布置在聚焦单元和成像单元之间的光路分离单元。 分离单元具有适于反射可见光区域的光并发射近红外光的特性。 当拍摄静止的眼底图像时，分割单元从光路退回。 具有这种特性的快速返回镜被用作分割单元。 当使用具有约850nm波长的近红外照明光时，这种光可以入射到成像单元上而不损失光量。 来自内部固定目标的可见光输出投影到被摄体的眼睛上。 角膜隔膜和晶状体膜片用于观察不透明光的眼底。 每个角膜片和晶状体膜片可以改变为具有不同直径的另一个。

公开(公告)号：US08727533B2

公开(公告)日：2014-05-20

申请号：US13323499

申请日：2011-12-12

申请人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

发明人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

IPC分类号： A61B3/10 ,  A61B3/14

CPC分类号： A61B3/14

摘要： A fundus camera includes an optical path splitting unit arranged between a focusing unit and an imaging unit. The splitting unit has characteristics adapted to reflect light of a visible light region and to transmit near-infrared light. The splitting unit retreats from an optical path when a still fundus image is photographed. A quick-return mirror having such characteristics is used as the splitting unit. When near-infrared illumination light having a wavelength of about 850 nm is used, such light can be incident upon the imaging unit without loss of the amount of light. Visible light output from an internal fixation target is projected onto a subject's eye. A cornea diaphragm and a crystalline lens diaphragm are used for observing a fundus with invisible light. Each of the cornea diaphragm and crystalline lens diaphragm can be changed to another one having a different diameter.

摘要翻译： 眼底照相机包括布置在聚焦单元和成像单元之间的光路分离单元。 分离单元具有适于反射可见光区域的光并发射近红外光的特性。 当拍摄静止的眼底图像时，分割单元从光路退回。 具有这种特性的快速返回镜被用作分割单元。 当使用具有约850nm波长的近红外照明光时，这种光可以入射到成像单元上而不损失光量。 来自内部固定目标的可见光输出投影到被摄体的眼睛上。 角膜隔膜和晶状体膜片用于观察不透明光的眼底。 每个角膜片和晶状体膜片可以改变为具有不同直径的另一个。

公开(公告)号：US20090262303A1

公开(公告)日：2009-10-22

申请号：US12424431

申请日：2009-04-15

申请人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

发明人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

IPC分类号： A61B3/12 ,  A61B3/14

CPC分类号： A61B3/14

摘要： A fundus camera includes an optical path splitting unit arranged between a focusing unit and an imaging unit. The optical path splitting unit has characteristics adapted to reflect light of a visible light region and to transmit near-infrared light. The optical path splitting unit retreats from an optical path when a still fundus image is photographed. A quick-return mirror having such characteristics is used as the optical path splitting unit. When near-infrared illumination light having a wavelength of about 850 nm is used, such light can be incident upon the imaging unit without loss of the amount of light. In addition, visible light output from an internal fixation target is projected onto a subject's eye. Further, a cornea diaphragm and a crystalline lens diaphragm are used for observing a fundus with invisible light. Each of the cornea diaphragm and the crystalline lens diaphragm can be changed to another one having a different diameter.

摘要翻译： 眼底照相机包括布置在聚焦单元和成像单元之间的光路分离单元。 光路分离单元具有适于反射可见光区域的光并透射近红外光的特性。 当拍摄静止的眼底图像时，光路分割单元从光路退回。 使用具有这种特性的快速返回镜作为光路分离单元。 当使用具有约850nm波长的近红外照明光时，这种光可以入射到成像单元上而不损失光量。 此外，从内部固定目标输出的可见光被投影到被检者的眼睛上。 此外，角膜隔膜和晶状体膜片用于用不可见光观察眼底。 每个角膜片和晶状体膜片可以改变为具有不同直径的另一个。

公开(公告)号：US08096659B2

公开(公告)日：2012-01-17

申请号：US12858244

申请日：2010-08-17

申请人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

发明人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

IPC分类号： A61B3/10 ,  A61B3/14

CPC分类号： A61B3/14

摘要： A fundus camera includes an optical path splitting unit arranged between a focusing unit and an imaging unit. The splitting unit has characteristics adapted to reflect light of a visible light region and to transmit near-infrared light. The splitting unit retreats from an optical path when a still fundus image is photographed. A quick-return mirror having such characteristics is used as the splitting unit. When near-infrared illumination light having a wavelength of about 850 nm is used, such light can be incident upon the imaging unit without loss of the amount of light. Visible light output from an internal fixation target is projected onto a subject's eye. A cornea diaphragm and a crystalline lens diaphragm are used for observing a fundus with invisible light. Each of the cornea diaphragm and crystalline lens diaphragm can be changed to another one having a different diameter.

摘要翻译： 眼底照相机包括布置在聚焦单元和成像单元之间的光路分离单元。 分离单元具有适于反射可见光区域的光并发射近红外光的特性。 当拍摄静止的眼底图像时，分割单元从光路退回。 具有这种特性的快速返回镜被用作分割单元。 当使用具有约850nm波长的近红外照明光时，这种光可以入射到成像单元上而不损失光量。 来自内部固定目标的可见光输出投影到被摄体的眼睛上。 角膜隔膜和晶状体膜片用于观察不透明光的眼底。 每个角膜片和晶状体膜片可以改变为具有不同直径的另一个。

公开(公告)号：US20100309431A1

公开(公告)日：2010-12-09

申请号：US12858244

申请日：2010-08-17

申请人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

发明人： Hiroshi Itoh ,  Shinya Tanaka ,  Motoya Takai

IPC分类号： A61B3/14

CPC分类号： A61B3/14

摘要： A fundus camera includes an optical path splitting unit arranged between a focusing unit and an imaging unit. The splitting unit has characteristics adapted to reflect light of a visible light region and to transmit near-infrared light. The splitting unit retreats from an optical path when a still fundus image is photographed. A quick-return mirror having such characteristics is used as the splitting unit. When near-infrared illumination light having a wavelength of about 850 nm is used, such light can be incident upon the imaging unit without loss of the amount of light. Visible light output from an internal fixation target is projected onto a subject's eye. A cornea diaphragm and a crystalline lens diaphragm are used for observing a fundus with invisible light. Each of the cornea diaphragm and crystalline lens diaphragm can be changed to another one having a different diameter.

摘要翻译： 眼底照相机包括布置在聚焦单元和成像单元之间的光路分离单元。 分离单元具有适于反射可见光区域的光并发射近红外光的特性。 当拍摄静止的眼底图像时，分割单元从光路退回。 具有这种特性的快速返回镜被用作分割单元。 当使用具有约850nm波长的近红外照明光时，这种光可以入射到成像单元上而不损失光量。 来自内部固定目标的可见光输出投影到被摄体的眼睛上。 角膜隔膜和晶状体膜片用于观察不透明光的眼底。 每个角膜片和晶状体膜片可以改变为具有不同直径的另一个。

公开(公告)号：US20080123050A1

公开(公告)日：2008-05-29

申请号：US11945793

申请日：2007-11-27

申请人： Shinya Tanaka ,  Tomoyuki Iwanaga ,  Hiroshi Itoh

发明人： Shinya Tanaka ,  Tomoyuki Iwanaga ,  Hiroshi Itoh

IPC分类号： A61B3/14 ,  A61B3/12

CPC分类号： A61B3/14

摘要： A focusing unit can be inserted into and removed from an illumination light path by rotating around a supporting portion. An index light source, a green LED, is attached to the bottom of a base. A transparent acrylic-resin disk is fixed to the base. A deflection prism is attached to the bottom of the disk. A beam from the light source enters the deflection prism. A focus index forming portion is provided on the top of the disk. In the center of a light-shielding portion is formed a slit-like opening, under which split prisms are provided. Deflected by the prisms, the beam from the light source is split into two, right-half and left-half, directional beams, and combined with an illumination optical system, in the form of two slit images, at the opening.

摘要翻译： 可以通过围绕支撑部分旋转而将聚焦单元插入照明光路中并从照明光路中移除。 索引光源（绿色LED）连接到底座的底部。 透明的丙烯酸树脂盘固定在基座上。 偏转棱镜连接到盘的底部。 来自光源的光束进入偏转棱镜。 焦点指标形成部分设置在盘的顶部。 在遮光部分的中心形成狭缝状的开口，在该开口处设有分割的棱镜。 由棱镜偏转，来自光源的光束被分成两个，右半部分和左半部分的定向光束，并且在开口处与两个狭缝图像的形式的照明光学系统组合。

公开(公告)号：US20100208202A1

公开(公告)日：2010-08-19

申请号：US12704415

申请日：2010-02-11

申请人： Hiroshi Itoh ,  Shinya Tanaka

发明人： Hiroshi Itoh ,  Shinya Tanaka

IPC分类号： A61B3/14

CPC分类号： A61B3/12

摘要： A fundus camera includes an illumination unit configured to illuminate a fundus of a subject's eye with a visible light from a visible light source, an imaging unit which has sensitivity in a visible wavelength range and is configured to receive a reflected light from the fundus to capture a fundus image, and a light amount balance changing unit configured to independently change at least a part of a light amount emitted from LED elements wherein the visible light source includes a plurality of the LED elements discretely arranged into a ring shape.

摘要翻译： 眼底照相机包括照明单元，其被配置为用来自可见光源的可见光照亮被检眼的眼底;成像单元，其在可见波长范围内具有灵敏度，并被配置为接收来自眼底的反射光以捕获 眼底图像和光量平衡改变单元，其被配置为独立地改变从LED元件发射的光量的至少一部分，其中可见光源包括离散地布置成环形的多个LED元件。

公开(公告)号：US5894337A

公开(公告)日：1999-04-13

申请号：US921356

申请日：1997-08-29

申请人： Satoru Okinishi ,  Shinya Tanaka ,  Yasuyuki Numajiri ,  Toshiaki Okumura ,  Shigeaki Ono ,  Hiroshi Itoh ,  Tomoyuki Iwanaga

发明人： Satoru Okinishi ,  Shinya Tanaka ,  Yasuyuki Numajiri ,  Toshiaki Okumura ,  Shigeaki Ono ,  Hiroshi Itoh ,  Tomoyuki Iwanaga

IPC分类号： A61B3/10 ,  A61B3/12 ,  A61B3/14 ,  A61B5/0285 ,  A61B3/00

CPC分类号： A61B3/1241

摘要： A eye fundus examining apparatus includes a first optical system for projecting measurement light onto the fundus of an eye, a deflecting member provided in the first optical system for deflecting the measurement light, a light receiving element for receiving the reflected light of the measurement light from the fundus of the eye, a predetermined parameter of a target on the fundus of the eye being measured from the light reception information of the light receiving element, a second optical system for projecting a tracking light beam to an area including the target on the fundus of the eye, an image pickup element for receiving the image of the target illuminated by the tracking light beam, and a control system for driving the deflecting member and directing the measurement light onto the target so that the distance of deviation from the illuminated point by the measurement light under an ideal condition on the fundus of the eye to the target image received on the image pickup element may become a set value, the set value being suitably resettable.

摘要翻译： 眼底检查装置包括用于将测量光投射到眼底的第一光学系统，设置在第一光学系统中用于偏转测量光的偏转构件，用于接收测量光的反射光的光接收元件 眼睛的眼底，根据光接收元件的光接收信息测量眼睛的眼底上的目标的预定参数，用于将跟踪光束投射到眼底的包括目标的区域的第二光学系统 用于接收由跟踪光束照射的目标的图像的图像拾取元件，以及用于驱动偏转构件并将测量光引导到目标上的控制系统，使得偏离照明点的距离由 在眼睛的眼底上的理想条件下的测量光到在图像拾取元件上接收的目标图像 可能成为设定值，设定值可以适当地重置。

公开(公告)号：US07736001B2

公开(公告)日：2010-06-15

申请号：US11945793

申请日：2007-11-27

申请人： Shinya Tanaka ,  Tomoyuki Iwanaga ,  Hiroshi Itoh

发明人： Shinya Tanaka ,  Tomoyuki Iwanaga ,  Hiroshi Itoh

IPC分类号： A61B3/10 ,  A61B3/14

CPC分类号： A61B3/14

摘要： A focusing unit can be inserted into and removed from an illumination light path by rotating around a supporting portion. An index light source, a green LED, is attached to the bottom of a base. A transparent acrylic-resin disk is fixed to the base. A deflection prism is attached to the bottom of the disk. A beam from the light source enters the deflection prism. A focus index forming portion is provided on the top of the disk. In the center of a light-shielding portion is formed a slit-like opening, under which split prisms are provided. Deflected by the prisms, the beam from the light source is split into two, right-half and left-half, directional beams, and combined with an illumination optical system, in the form of two slit images, at the opening.

摘要翻译： 可以通过围绕支撑部分旋转而将聚焦单元插入照明光路中并从照明光路中移除。 索引光源（绿色LED）连接到底座的底部。 透明的丙烯酸树脂盘固定在基座上。 偏转棱镜连接到盘的底部。 来自光源的光束进入偏转棱镜。 焦点指标形成部分设置在盘的顶部。 在遮光部分的中心形成狭缝状的开口，在该开口处设有分割的棱镜。 由棱镜偏转，来自光源的光束被分成两个，右半部分和左半部分的定向光束，并且在开口处与两个狭缝图像的形式的照明光学系统组合。