With the Fresnel diffraction approximation method, the influences of the collimated lens and standard lens surface errors on the transparence testing are analyzed in Fizeau interferometer.
根据菲涅耳衍射近似理论，就菲佐干涉仪中的准直镜和标准镜面形误差对透过检测的影响进行了研究。
As before, the laser package is hermetically sealed for reliable operation in adverse environments and the laser output is collimated using an internal lens system.
密封激光包在恶劣环境下可靠运行，激光输出采用内部透镜系统校准。
Its work principle and structure is presented. It consists of a PGP, a front collimated and a rear focusing lens.
阐述其工作原理和结构形式，包括PGP、准直物镜和成像物镜的设计要求。
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