A design of high-precision 4-in. transmission spheres that can work in wide-band interferometric measurement is proposed. A motorized precision rotation mount is used to drive one of the lenses in the design to make the transmission sphere work at any wavelength in the wavelength range of 532 to 1550 nm, where the F-number of the transmission sphere remains constant during the movement of the lens. OpticStudio software is utilized to verify the design under F-numbers of 1.0, 2.2, and 3.3, and the results show that a transmission sphere with an F-number of 1.0 to 3.3 can be designed based on our model. The tolerance analysis and the secondary adjustment results show that the peak-to-valley transmission wavefront error of the transmission sphere can be controlled within λ / 20 in actual machining and assembly, which meets the requirement of high-precision interferometric measurement.

中文翻译：

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多波长干涉仪宽带传输球的设计与分析

高精度4英寸设计。提出了可以在宽带干涉测量中工作的透射球。电动精密旋转安装座用于驱动设计中的一个镜头，使透射球在 532 至 1550 nm 波长范围内的任何波长下工作，其中透射球的 F 值在移动过程中保持恒定镜头。利用OpticStudio软件对F值分别为1.0、2.2和3.3下的设计进行验证，结果表明基于我们的模型可以设计出F值在1.0到3.3之间的透射球。公差分析和二次调整结果表明，在实际加工和装配中，透射球的峰谷透射波前误差可以控制在λ/20以内，