公开(公告)号：US4439023A

公开(公告)日：1984-03-27

申请号：US260395

申请日：1981-05-04

申请人： Youich Iba ,  Ken-ichi Nakahashi ,  Masaki Matsubara

发明人： Youich Iba ,  Ken-ichi Nakahashi ,  Masaki Matsubara

IPC分类号： A61B3/12 ,  A61B3/14 ,  G03B29/00

CPC分类号： A61B3/14

摘要： A compactly designable optical system for ophthalmological instruments comprising an illumination system so adapted as to illuminate a fundus with rays having passed through a ring slit and been focused on the cornea of an eyeball to be examined, and an observation/photographing system so adapted as to permit observing and photographing an image of said eyeball with a small reflector mirror arranged in said illumination system so as to be inclined with regard to the optical axis thereof and a relay lens for focusing the rays which are reflected by the fundus, passing through said objective lens and reflected by said small reflector mirror.

摘要翻译： 一种用于眼科仪器的可紧凑设计的光学系统，包括照明系统，其适于用通过环形狭缝的光线照射眼底并聚焦在待检查的眼球的角膜上，以及适于 允许利用布置在所述照明系统中的小型反射镜观察和拍摄所述眼球的图像，以便相对于其光轴倾斜，以及用于聚焦由眼底反射的光线的中继透镜，穿过所述目标 透镜并由所述小反射镜反射。

公开(公告)号：US4509838A

公开(公告)日：1985-04-09

申请号：US575580

申请日：1984-01-31

申请人： Youich Iba ,  Ken-ichi Nakahashi ,  Masaki Matsubara

发明人： Youich Iba ,  Ken-ichi Nakahashi ,  Masaki Matsubara

IPC分类号： A61B3/14 ,  G03B29/00 ,  G03B9/08

CPC分类号： A61B3/14

摘要： An optical system for retinal cameras wherein the distance between an eye to be inspected and an inspector is made short to improve the operatability and to make it easy to handle the eye to be inspected.

摘要翻译： 一种用于视网膜照相机的光学系统，其中要检查的眼睛和检查者之间的距离变短，以提高可操作性并使其容易处理被检查的眼睛。

公开(公告)号：US4564273A

公开(公告)日：1986-01-14

申请号：US606001

申请日：1984-05-03

申请人： Youich Iba ,  Kouji Inaba

发明人： Youich Iba ,  Kouji Inaba

IPC分类号： A61B3/14

CPC分类号： A61B3/14

摘要： A retinal camera wherein an auxiliary lens is provided so as to be free to be let into and out of a light path between the position of an image of a retina formed by an objective and a relay lens so that the front eye part of an eye to be examined can be illuminated brightly and uniformly and an image of the front eye part of a high resolution can be obtained at a high magnification. The auxiliary lens has a negative or positive refracting power. The auxiliary lens having a negative refracting power is let into and out of the light path together with an image rotator so that the image of the front eye part can be observed as an erected image.

摘要翻译： 一种视网膜照相机，其中辅助透镜设置成可以自由地进入和离开由物镜形成的视网膜的图像的位置与中继透镜之间的光路，使得眼睛的前眼部分 待被检查的光可以被明亮均匀地照亮，并且可以以高放大倍率获得高分辨率的前眼部分的图像。 辅助透镜具有负的或正的折射光焦度。 具有负折射力的辅助透镜与图像旋转器一起进入和离开光路，使得可以观察前眼部分的图像作为竖立图像。