眼睛屈光不正的模拟与矫正实验——薄透镜焦距(光焦度)的测定

Simulation and correction experiment on eye ametropia——determination of focal distance(focal power) of thin lenses

介绍了一种较简单的实验方法，在1．5m长的光具座上，仅用三个薄透镜和像屏组成的共轴球面折射系统，巧妙地模拟了眼睛成像的光学原理以及屈光不正的矫正，减少了实验步骤，降低了学习难度，提高了实验精度，从而比较准确地测定了薄透镜的焦距（光焦度）。

This paper introduces a simple experimental technique to determine the focal distance （focal power） of thin lenses. Merely three thin lenses placed on a 1.5 meter-long optical bench and a screen comprise a coaxial spherical refraction system which delicately simulates the mechanism of eye imaging and the correction of eye ametropia. The technique reduces the procedures in experiment, relieves the hardness of learning and raises the precision in determining the focal distance of thin lenses.