Jilong Wang,Jin He,Shunguo Shen,Xiangdong Li,Weizhong Zhou,Xiaohu Liu
申请号：
US13921405
公开号：
US20140071401A1
申请日:
2013.06.19
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A retinoscope for detecting eye ametropia and astigmatism axes is disclosed in the invention, which comprises an illuminating and imaging system comprising an illumination light source, a projecting mirror and a half transparent and half reflecting mirror arranged sequentially along the direction of propagation of the illumination light, the respective optical axes of the projecting mirror and half transparent and half reflecting mirror are collinear with each other, and the reflecting plane of the half transparent and half reflecting mirror is at an angle of 45° relative to the illumination optical axis, wherein a condensing lens column and a retinoscopy diaphragm are disposed sequentially along the illumination optical axis between the illumination light source and the projecting mirror, the optical axis of the condensing lens column is coincident with the illumination optical axis, and the plane of the retinoscopy diaphragm is perpendicular to the illumination optical axis.
