Optical design of microscopic imaging system for ultraviolet-visiblewide spectrum
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摘要: 介绍一个紫外-可见宽光谱显微物镜的设计过程。通过改进的PW法求解初始结构参数，确定采用两个分离的正负透镜组组成透射式光学系统，根据光学材料的色散特性，选取正透镜材料为CaF2，负透镜材料为熔石英，通过建立复消色差方程组来分配双分离透镜的光焦度，合理地对两组透镜的偏角进行分配。运用CODE-V光学设计软件对系统进行优化，使系统的位置色差和二级光谱同时得到校正，实现了复消色差。仿真结果表明：系统在整个视场范围内，点列图弥散圆RMS半径值小于5 ，最大视场处的像散为0.058，畸变为0.04 %。Abstract: Design of a wide spectrum ultraviolet-visible microscope objective was introduced. According to the dispersive properties of ultraviolet（UV）optical materials, was selected as positive lens material, apochromatic equations for distributing the optical power of each lens in double-dialyte lens were established, and appropriate deviation angles were assigned for two groups. Based on theoretical calculation with PW method and optimization with CODE-V, the longitudinal chromatic aberration and secondary spectrum were corrected, and apochromatism was achieved. Simulation results show that the radius RMS of spot diagram dispersion circle is less than 5 in the entire field of view, astigmatism is 0.058 and istortion is 0.04% at the maximum field of view for this system.
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Keywords:
- wide spectrum /
- UV-visible microscope objective /
- apochromatism /
- PW method
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