该仪器可以测定各种倍率物镜轴上、轴外多种波长的波面像差等光学性能参数。
It may be used to test the on - or off-axis various wavelength wave aberrations, chromatic aberration and other optical performances of various magnification microscopic objective.
详细分析了该技术利用镜像测试标记检测投影物镜最佳焦面热漂移与放大倍率热漂移的基本原理。
The principle for measuring the thermal drifts of focus and magnification (TDFM) based on mirror-symmetry marks is described in this paper.
这种变焦距物镜有两个优点，一是可以实现高倍率变焦，二是容易消除在变焦过程中产生的像点移动现象。
Firstly, the zoom ratio may be enlarged. Secondly, the image point movement may be easily eliminated. The principle of optical compensated step zoom lens is explained.
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