公开(公告)号：US08777411B2

公开(公告)日：2014-07-15

申请号：US13728645

申请日：2012-12-27

Applicant: Crystalvue Medical Corporation

Inventor： Che Liang Tsai ,  Chung Ping Chuang ,  Yen Jen Chang

IPC: A61B3/14 ,  A61B3/10

CPC classification number: A61B3/12 ,  A61B3/0091

Abstract: A fundus examination device aiding in gaze fixation and image focusing includes a light projecting device for projecting an examination light to illuminate an examinee's fundus; an illuminating system for transmitting the examination light to the examinee's eye and receiving a fundus image; an imaging system for showing the fundus image; and a focusing and gaze-fixation device located in the illuminating system and including a focus mask formed in a focusing zone, on which the examinee's eye focuses. The focus mask includes a split image screen surrounded by a light-penetrable structure, and gaze fixation devices for forming gaze-fixation images at examinee's eye focusing positions within the focusing zone, such that the split image screen and the gaze-fixation images are located at different focal positions corresponding to the examinee's eye curvature. Therefore, when a split image focusing is completed, the gaze-fixation images are also located at clearly recognizable focal positions.

Abstract translation: 辅助注视固定和图像聚焦的眼底检查装置包括用于投影检查光以照亮受检者的眼底的投光装置; 照明系统，用于将检查光传输到受检者的眼睛并接收眼底图像; 用于显示眼底图像的成像系统; 以及位于照明系统中的聚焦和注视固定装置，包括形成在聚焦区域中的聚焦掩模，受检者的眼睛聚焦在该聚焦区域上。 聚焦掩模包括由可透光结构包围的分割图像屏幕和注视固定装置，用于在聚焦区域内的受检者的眼睛聚焦位置处形成注视固定图像，使得分割图像屏幕和注视固定图像位于 在对应于受试者的眼睛曲率的不同焦点位置。 因此，当分割图像聚焦完成时，注视固定图像也位于清晰可辨的焦点位置。