本文根据临床眼底检查要求,在传统直接检眼镜和眼底照相机基础上,针对便携式数字检眼镜的光学系统进行了优化设计.在照明系统中采用中空反射镜形成环形照明光源,避免了角膜反射光和杂散光.在成像系统设计上,运用ZEMAX软件对成像系统进行设计优化,成像物镜全部用球面,提高了系统的性价比.通过补偿镜设计,保证了不同屈光能力的眼睛的眼底图像能够通过CCD成像系统传入液晶显示模块,可进行相应的显示、存储,并可上传PC机,进行后期图象数据处理.%According to the requirements of clinical fundus examination, the optical system of portable and digital ophthalmoscope based on traditional direct ophthalmoscope and fundus camera was designed. Lighting System generates ring-liked illuminant by use of hollow reflector and it avoids corneal reflection and stray light. Imaging system was designed and optimized by ZEMAX, and was completed by sphere which increased performance-price ratio. The design of compensating mirror makes fundus images of eyes which have different refraction was displayed in the LCD Display Module by CCD, and also could be uploaded to PC, and then was stored and image processed.
展开▼
