隐形眼镜投影测量仪的设计

提出了一种采用光学投影成像和自扫描光电二极管列阵(SSPA)传感器实现隐形眼镜曲率、光学中心厚度和直径测量的新方法,基于此方法设计成功了一种新型隐形眼镜投影测量仪.介绍了仪器的测量原理、仪器结构、光电二极管列阵信号采集以及单片机控制系统的硬件和软件设计.该测量仪测量镜片曲率半径的精度优于±0.1mm,测量镜片光学中心厚度的精度优于±0.01mm,测量镜片直径的精度优于±0.1mm,并能分辨镜片上任何方向大于0.01mm的杂质和表面缺陷.

Design of contact lenses projection measuring instrument

With the demand for contact lenses increasing, measurement instrument and technology are needed for measuring the important parameters of contact lenses. A new method is proposed to use optical projection and self-scanning photodiode array to measure the curvature, optical center thickness and diameter of contact lenses. A new instrument based on the method has been successfully designed for measuring contact lenses. Its precision is superior to ?0.1 mm in lenses curvature, ?0.01 mm in optical center thickness, and ?0.1 mm in diameter. The measuring principal, special construction, signal sampling process of this new instrument and the design of the single-chip microcomputer hardware and software system are discussed in detail.