JP2012183185A5

JP2012183185A5 -

Info

Publication number: JP2012183185A5
Application number: JP2011048172A
Authority: JP
Filing date: 2011-03-04
Publication date: 2014-04-17
Anticipated expiration: 2031-03-04

Description

（１）被検者眼の眼底を照明するための眼底照明光学系と、光源から出射された光で前記眼底にフォーカス指標を投影するためのフォーカス指標投影光学系と、光軸方向に移動可能なフォーカシングレンズと、前記眼底に投影された前記フォーカス指標を撮像可能な撮像素子とを備える眼底撮像光学系と、を備える眼底撮影装置であって、前記撮像素子によって撮像された前記フォーカス指標に基づいて被検眼に対する前記眼底撮像光学系のフォーカス状態を検出する検出手段と、前記検出手段の検出結果に基づいて生成される電子的なインジケータと、前記撮像素子によって撮像された前記フォーカス指標と、を同時にモニタへ表示するための制御手段と、を備えることを特徴とする。
(1) A fundus illumination optical system for illuminating the fundus of a subject's eye, a focus index projection optical system for projecting a focus index onto the fundus with light emitted from a light source , and movable in the optical axis direction such a focusing lens, the focus target projected on the fundus a fundus imaging apparatus comprising: a fundus imaging optical system, the comprising an imaging capable imaging device, based on the focus index captured by the image sensor Detection means for detecting a focus state of the fundus imaging optical system with respect to the eye to be examined, an electronic indicator generated based on a detection result of the detection means , and the focus index imaged by the imaging element. And control means for simultaneously displaying on a monitor .

Claims

A fundus illumination optical system for illuminating the fundus of the subject's eye;
A focus index projection optical system for projecting a focus index on the fundus with light emitted from a light source ;
A fundus imaging optical system comprising a focusing lens movable in the optical axis direction, and an imaging device capable of imaging the focus index projected onto the fundus ;
A fundus imaging apparatus comprising,
Detecting means for detecting a focus state of the fundus imaging optical system with respect to an eye based on the focus index imaged by the image sensor ;
Control means for simultaneously displaying an electronic indicator generated based on a detection result of the detection means and the focus index imaged by the imaging device on a monitor ;
A fundus photographing apparatus comprising:

The fundus imaging apparatus according to claim 1,
The imaging device can further capture a fundus image including the focus index,
The fundus imaging apparatus , wherein the control means displays the electronic indicator so as to overlap the fundus image including the focus index .

The fundus imaging apparatus according to claim 1 or 2 ,
The control means, based on said detection result by the detection means, in a state where no in-focus state and focus, the fundus photographing apparatus according to claim Rukoto switching a display state of the indicator.

The fundus imaging apparatus according to any one of claims 1 to 3 ,
The control means, based on said detection result by the detection means, in a state where no in-focus state and focus, the fundus photographing apparatus according to claim Rukoto change the color of at least a part of symbols forming the indicator .

The fundus imaging apparatus according to any one of claims 1 to 4 ,
Drive means for driving the focusing lens;
The fundus imaging apparatus , wherein the control unit controls driving of the driving unit based on a detection result of the detection unit and performs autofocus on the fundus.