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公开(公告)号：US09770166B2
公开(公告)日：2017-09-26
申请号：US14680625
申请日：2015-04-07
CPC分类号： A61B3/1208 , A61B3/0041 , A61B3/1225 , A61B3/125 , A61B3/14
摘要： A contact-type ophthalmoscope includes a contact lens, an annular illumination module, an imaging lens group and an image capture module. The contact lens having a concave surface is configured for contacting an eyeball. The annular illumination module arranged close to the contact lens is configured for providing a direct illumination light source to illuminate a fundus of the eyeball. The imaging lens group is disposed in the central hollow portion of the annular illumination module and configured for converging the reflected light from the fundus of the eyeball. The image capture module is configured for capturing the reflected light converged by the imaging lens group to form an image. The above-mentioned contact-type ophthalmoscope has advantages of better illumination efficiency, compactness and less scattered light reflected from the imaging lens.
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公开(公告)号：US10591708B2
公开(公告)日：2020-03-17
申请号：US15718405
申请日：2017-09-28
摘要： A slit illumination device includes a first light-emitting element, a first diaphragm and a projection lens group. The first light-emitting element generates a primary illumination light. The first diaphragm has at least one opening and is disposed on a light exit side of the first light-emitting element, wherein the opening is an elongate shaped opening. The projection lens group is disposed on a light exit side of the first diaphragm, converging the primary illumination light and projecting it to a target object. A distance from the first diaphragm to the projection lens group is 1-2 times a focal length of the projection lens group on a light entrance side. The foregoing slit illumination device has advantages of simple structure, small size, and longer depth of field. A microscope system including the foregoing slit illumination device is also disclosed.
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公开(公告)号：US11867506B2
公开(公告)日：2024-01-09
申请号：US17186677
申请日：2021-02-26
发明人： Chu-Ming Cheng , Long-Sheng Liao
IPC分类号： G01B9/02 , G01B9/02091 , A61B3/10 , G02B26/08
CPC分类号： G01B9/02091 , A61B3/102 , G02B26/0833
摘要： A scanning device applied to an optical coherence tomography system integrates a scanning lens group required by the coherence tomography system into a fundus imaging system, so that the coherence tomography system and the fundus imaging system can share the scanning lens group for focusing. The above-mentioned scanning device can shorten a response time of focusing and reduce the volume of the system. An optical coherence tomography system including the above-mentioned scanning device is also disclosed.
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公开(公告)号：US10702151B2
公开(公告)日：2020-07-07
申请号：US16139411
申请日：2018-09-24
发明人： Chu-Ming Cheng , Long-Sheng Liao , Che-Jung Kuo , Wei-hsun Chang
摘要： A fundus camera includes an eyeball-offset detection device and an annular illumination device. The eyeball-offset detection device is configured to detect an offset vector of a lens of the fundus camera relative to an inspected eyeball. The annular illumination device includes a plurality of illumination elements that are arranged in a ring shape around an optical axis of an imaging system of the fundus camera. According to the offset vector of the lens relative to the inspected eyeball, the fundus camera selectively activates one or more illumination elements at corresponding positions to keep an illumination optical path away from a center area of the pupil of the inspected eyeball to reduce effects of corneal reflection and improve illumination quality. Therefore, the abovementioned fundus camera has a large operable range.
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公开(公告)号：USD863557S1
公开(公告)日：2019-10-15
申请号：US29597908
申请日：2017-03-21
设计人： Chu-Ming Cheng , Long-Sheng Liao , Kuo-Lang Huang , Kuan-Pao Lu
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公开(公告)号：US09392938B2
公开(公告)日：2016-07-19
申请号：US14661416
申请日：2015-03-18
发明人： Chu-Ming Cheng , Long-Sheng Liao , Yi-Wen Chen , Pin-Tseng Liu
CPC分类号： A61B3/12 , A61B3/0008 , A61B3/0091 , A61B3/14
摘要： An ophthalmoscope comprises an illumination element providing an illumination light beam to illuminate the fundus of an eyeball; an imaging lens group converging the reflected light beam from the fundus; and an image capture module. The image capture module includes an image sensing element, a fixation light element and an optical element. The image sensing element captures the reflected light beam converged by the imaging lens group to form an image. The fixation light element provides a fixation light beam passing through the imaging lens group and reaching the fundus. The optical element is arranged among the imaging lens group, image sensing element and fixation light element to make the image sensing element and the fixation light element on different equivalent focal planes of the imaging lens group. According to the above-mentioned structure, a relay lens and a focusing module used by the conventional fixation light element is omitted.
摘要翻译： 检眼仪包括照明元件，其提供照明光束以照亮眼球的眼底; 会聚来自眼底的反射光束的成像透镜组; 和图像捕获模块。 图像捕获模块包括图像感测元件，固定光元件和光学元件。 图像感测元件捕获由成像透镜组会聚的反射光束以形成图像。 固定光元件提供穿过成像透镜组并到达眼底的固定光束。 光学元件配置在成像透镜组，摄像元件和固定光元件之间，以使摄像元件和固定光元件成像在成像透镜组的不同等效焦平面上。 根据上述结构，省略了传统的固定光元件使用的中继透镜和聚焦模块。
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公开(公告)号：US09993155B2
公开(公告)日：2018-06-12
申请号：US14149206
申请日：2014-01-07
发明人： Chu-Ming Cheng , Long-Sheng Liao
CPC分类号： A61B3/12 , A61B3/0091 , A61B3/1208 , A61B3/14 , G02B9/12 , G02B9/14
摘要： A lens module comprises a first lens group, a second lens group and a third lens group, which are arranged from an eye fundus side to an image side in sequence. The first lens group has a positive effective focal length (EFL) and includes a first lens having two convex surfaces respectively facing the eye fundus side and the image side. The second lens group has a positive or negative EFL and includes a plurality of second lenses, wherein the second lens closest to the eye fundus side has a concave surface facing the eye fundus side. The third lens group has a positive EFL and includes a plurality of third lenses, wherein at least one third lens is a cemented lens. The abovementioned lens module decreases the volume of a lens module and reduces the ghosting effect. An eye fundus camera using the abovementioned lens module is also disclosed.
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