论文部分内容阅读
介绍变倍范围0.8×～8×连续变倍体视显微镜物镜的光学变倍原理。通过计算得出前固定组、变倍组、补偿组和后固定组焦距分别为43.149mm、-26mm、-26mm和54.846mm,利用Zemax光学设计软件在数值孔径取0.15～0.2条件下各自进行优化得到初始结构参数。组合后进一步优化,数值孔径取0.1,得出最终结构参数,并分析优化前后高、中、低倍时的各光学像差。利用高斯光学原理,通过计算变倍组作线性移动x,求出补偿组作非线性移动y的运动曲线,从而进行精密凸轮设计,开发出像差小又实用的体视显微镜物镜。
This paper introduces the principle of optical zooming of 0.8 × ~ 8 × continuous zoom stereo microscope objective. The focal lengths of the pre-fixation group, the magnification group, the compensation group and the post-fixation group were calculated to be 43.149mm, -26mm, -26mm and 54.846mm, respectively, and were optimized by Zemax optical design software under the numerical aperture of 0.15-0.2 Initial structural parameters. After further optimization, the numerical aperture is taken as 0.1, the final structural parameters are obtained, and the optical aberrations at high, middle and low magnification before and after optimization are analyzed. By using Gauss principle of optics, the motion curve of the compensating group for the nonlinear movement y is obtained by calculating the linear displacement x of the variable magnification group, so that the precision cam design is carried out to develop a compact and practical stereomicroscope.