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    • 13. 发明授权
    • Fundus observation apparatus
    • 眼底观察仪
    • US07306336B2
    • 2007-12-11
    • US11018505
    • 2004-12-22
    • Junichi AkitaAkihiro FujishiroToshifumi SumiyaNaoyuki Kondo
    • Junichi AkitaAkihiro FujishiroToshifumi SumiyaNaoyuki Kondo
    • A61B3/14
    • A61B3/0058A61B3/12A61B3/152
    • An apparatus for observing a fundus of an eye of an examinee has an observation optical system having an image-pickup element which obtains a time-series fundus image, a display part which displays the obtained fundus image on its monitor as a moving image, a determination part which determines a standard fundus image based on the displayed image, a memory part which stores the determined image, a calculation part which digitizes the image based on a threshold luminance level to obtain a digitized image thereof, digitizes a present fundus image obtained after the determination of the standard image based on the threshold luminance level to obtain a digitized image thereof and compares the obtained digitized images two-dimensionally to obtain their positional difference, and a display control part for correcting a display position of the present fundus image based on the obtained positional difference to display the corrected image on the monitor.
    • 用于观察受检者眼底的装置具有观察光学系统,其具有获得时间序列眼底图像的图像拾取元件,将其监视器上获得的眼底图像显示为运动图像的显示部分, 确定部分,其基于所显示的图像确定标准眼底图像;存储器部分,其存储确定的图像;计算部分,其基于阈值亮度级数字化图像以获得其数字化图像;数字化后续获得的眼底图像; 基于阈值亮度水平确定标准图像以获得其数字化图像,并且二维地比较所获得的数字化图像以获得它们的位置差异;以及显示控制部分,用于基于以下方式校正本眼底图像的显示位置: 获得的位置差异以在监视器上显示校正图像。
    • 16. 发明授权
    • Fundus imaging apparatus and fundus imaging method
    • 眼底成像装置和眼底成像方法
    • US07198367B2
    • 2007-04-03
    • US11363998
    • 2006-03-01
    • Junichi AkitaNaoyuki KondoAkihiro FujishiroKatsuyasu Mizuno
    • Junichi AkitaNaoyuki KondoAkihiro FujishiroKatsuyasu Mizuno
    • A61B3/14
    • A61B3/1233
    • A fundus imaging apparatus comprises: a beam emitter which simultaneously emits a first laser beam and a second laser beam having a different wavelength from the first beam; an irradiation optical system having a beam scanner which scans the emitted first and second beams in two dimensions on a fundus, the irradiation optical system being adapted to irradiate the emitted first and second beams onto the fundus; a first filter which intercepts the first and second beams reflected by the fundus and second fluorescence from the fundus by irradiation of the second beam and transmits first fluorescence from the fundus by irradiation of the first beam; a second filter which intercepts the first and second beams reflected by the fundus and the first fluorescence from the fundus and transmits the second fluorescence from the fundus; an imaging optical system having a photo-receiving element which receives the first fluorescence having passed through the first filter and the second fluorescence having passed through the second filter; a filter changer which continuously alternately disposes the first filter and the second filter in an optical path of the imaging optical system in sync with scanning by the beam scanner; and an image processing part which obtains a first fundus image based on a received light signal of the first fluorescence from the photo-receiving element and obtains a second fundus image based on a received light signal of the second fluorescence from the photo-receiving element.
    • 眼底成像装置包括:射束发射器,其同时发射具有与第一光束不同的波长的第一激光束和第二激光束; 一种具有光束扫描器的照射光学系统,其在二维上在眼底上扫描发射的第一和第二光束,所述照射光学系统适于将发射的第一和第二光束照射到眼底上; 第一滤光器,其通过照射第二光束拦截由眼底反射的第一和第二光束和来自眼底的第二荧光,并且通过照射第一光束从眼底透射第一荧光; 第二过滤器,其拦截由眼底反射的第一和第二光束和来自眼底的第一荧光,并从眼底透射第二荧光; 具有光接收元件的成像光学系统,其接收通过第一滤光器的第一荧光,并且第二荧光通过第二滤光器; 滤光器更换器,其与成像光学系统的光路连续地交替地配置第一滤光器和第二滤光器,与扫描仪的扫描同步; 以及图像处理部,其基于来自光接收元件的接收到的第一荧光的光信号获得第一眼底图像,并且基于来自光接收元件的接收到的第二荧光的光信号获得第二眼底图像。
    • 17. 发明申请
    • Fundus observation apparatus
    • 眼底观察仪
    • US20050157259A1
    • 2005-07-21
    • US11018505
    • 2004-12-22
    • Junichi AkitaAkihiro FujishiroToshifumi SumiyaNaoyuki Kondo
    • Junichi AkitaAkihiro FujishiroToshifumi SumiyaNaoyuki Kondo
    • A61B3/14A61B3/12A61B3/15A61B3/10
    • A61B3/0058A61B3/12A61B3/152
    • An apparatus for observing a fundus of an eye of an examinee has an observation optical system having an image-pickup element which obtains a time-series fundus image, a display part which displays the obtained fundus image on its monitor as a moving image, a determination part which determines a standard fundus image based on the displayed image, a memory part which stores the determined image, a calculation part which digitizes the image based on a threshold luminance level to obtain a digitized image thereof, digitizes a present fundus image obtained after the determination of the standard image based on the threshold luminance level to obtain a digitized image thereof and compares the obtained digitized images two-dimensionally to obtain their positional difference, and a display control part for correcting a display position of the present fundus image based on the obtained positional difference to display the corrected image on the monitor.
    • 用于观察受检者眼底的装置具有观察光学系统,其具有获得时间序列眼底图像的图像拾取元件,将其监视器上获得的眼底图像显示为运动图像的显示部分, 确定部分,其基于所显示的图像确定标准眼底图像;存储器部分,其存储确定的图像;计算部分,其基于阈值亮度级数字化图像以获得其数字化图像;数字化后续获得的眼底图像; 基于阈值亮度水平确定标准图像以获得其数字化图像,并且二维地比较所获得的数字化图像以获得它们的位置差异;以及显示控制部分,用于基于以下方式校正本眼底图像的显示位置: 获得的位置差异以在监视器上显示校正图像。