眼镜轴距与人眼瞳距便捷测量方法

Simple measurement of the axis distance and interpupillary distance

当人眼的瞳距与其所戴眼镜的轴距不匹配时,看到的景物会变形、失真和模糊,造成视觉疲劳,对眼睛造成不可逆的伤害.本论文提出了采用激光笔、尺子和手机拍照的人眼瞳距与眼镜轴距的自主测量方案,通过分析光学成像原理,建立激光笔四种位置模式的眼镜轴距测量模型,给出眼镜两镜片度数相同和不同时的计算公式.搭建实验平台进行了实验,分析了影响精度的因素,并采用Tracker视频分析软件来进一步减小测量误差.最后,采用手机拍照来准确测量人眼的瞳距,从而实现了人眼瞳距与眼镜轴距的便捷测量,以及它们是否匹配的准确判别.

If the interpupillary distance does not match the axis distance of one’s glasses, the scene would be deformed, distorted and blurred, and this could result in visual fatigue and irreversible damage to the eyes. In this paper a measurement scheme by using laser pen, ruler and mobile phone is proposed. By analyzing the principle of optical imaging, the measurement models of axis distance in four position cases of laser pen are established, and the calculation formulas of two glasses with the same or the different degrees are given. Then a platform is built to do experiment, and the factors affecting on the accuracy are analyzed. Tracker video analysis software is also used to further reduce the measuring error. Finally, through taking pictures by using mobile phone, the interpupillary distance is accurately measured. Thus conveniently measuring the interpupillary distance and the axis distance and accurately judging whether they match or not are realized.