眼镜度数简便测量及镜片面型判别

SIMPLE MEASURING GLASSES DEGREE AND DETERMINING LENS TYPE BY SIMPLE TOOLS

居家自主实验是疫情期间大学开展线上实验教学新的尝试和探索,眼镜度数测量及镜片面型判别是众多创新实验中的一个典型案例。眼镜度数一般是通过专业仪器测量,论文通过分析透射过眼镜的激光点位置会随眼镜的平移而移动这个现象,提出用激光笔和直尺来测量眼镜度数的居家简便测量方案。分析了激光入射角偏转对测量精度的影响并改进了实验方法,同时给出了镜片面型判别的方法。此外本文还采用Tracker视频分析软件来进一步提高测量精度,实现了居家条件下便捷准确测量眼镜度数和镜片面型的判定。

Home-based experiment is one of the latest explorations of teaching online during quarantine.The experiment of measuring the degree of glasses and determining lens type by tools available at home is one of the typical examples of this innovation.The degree of glasses is traditionally measured by professional instruments.By analyzing the point position of laser which moves with the movement of the glasses when laser passes through the glasses,an simple and convenient home-based experimental method of measuring the degree of glasses with a laser pen and ruler is proposed.The influence of the laser incidence angle deflection on the measurement accuracy is analyzed,and the experimental method is improved.At the same time,a method of judging the lens type is given.In addition,Tracker,a video analysis software is used to further improve accuracy.Thus,the goal of measuring the degree of glasses and judging lens type conveniently and accurately under home condition is achieved.