uniformity of light

In this paper, we describe three optical interference methods to measure the homogeneity of optical glass, a high accuracy apparatus for testing the homogeneity of optical glass is developed, and the test result shows the measurement error is less than 1×10 -6 .

高质量的透射光学系统对光学材料的光学均匀性要求非常高 ,材料局部折射率 10 -6 量级的变化就可能破坏整个系统的性能。