As for this invention, as for this optical system, being common basically, the illumination and it possesses the radiation route which accompanies the reflected characteristic optical element with the refraction characteristic where are utilized observing or record for in regard to, the optical system for the eyeground camera for the ophthalmoscope inspection which does not have reflection. In order the illumination and image formation to do the eyeground, basically, the mirror (1 and 2) the image formation characteristic mirror & the system which consist of the plural reflected characteristic optical elements of shape are planned, at that time, at least one optical element, for example the mirror (2), is formed as the free form mirror which has the reflected characteristic free shaped surface with image formation characteristic. At that time, in order the optical element, the eye of the patient whom it should inspect (9) inside the wide jioputori range, for image formation of the reflecting interface of the optical element to the retina picture which image formation is done to be evaded, in position and the attitude for mutually is defined accurately, it is arranged inside the housing.本発明は、反射のない検眼鏡検査のための、眼底カメラ用の光学システムに関し、この光学システムは、基本的に共通で照明および観察または記録のために利用される屈折性で反射性の光学要素を伴う放射線経路を有する。眼底を照明および結像するため、基本的に、ミラー(1および2)の形の複数の反射性の光学要素からなる結像性のミラー・システムが企図されており、その際、少なくとも1つの光学要素、例えばミラー(2)が、結像性で反射性の自由形状面を備えた自由形状ミラーとして形成される。その際、光学要素が、検査すべき患者の眼(9)の広いジオプトリ範囲内で、結像された網膜画像への光学要素の反射面の結像が回避されるように正確に定義された互いに対するポジションおよび姿勢で、ハウジング内に配置される。
