物距像距法在凹透镜焦距测量中的成像原理与数据分析

Theoretical Analysis and Study on Measuring the Focus of Concave Lens by Object Image Distance Method

针对物距像距法测量凹透镜焦距的实验现象进行了理论分析,加深了对成像规律的理解,并提出了减小视觉实验误差的方法:凹透镜尽量靠近虚物,减小清晰成像的范围。本文对凹透镜测焦距的实验有一定的指导意义。

Theoretical analysis is performed based on experimental phenomenon of measuring the concave lens focus by object-image distance method.Thus the imaging rules of lens are more deeply understood. This paper proposes the method for reducing the visual error,that is concave lens close to virtual object and then decrease the range of the clear imaging.The paper is useful to experiment of measuring the concave lens focus with object-image distance method.