The need for stability of aberration and correction of images for a zoom lens system should be consider during zooming p......

For 640 pixel×512 pixel cooled staring focal plane array detector,a VisSWIR wideband continuous zoom optical system wit......

在一些环境比较恶劣的情况下,需要密封使用的变倍望远镜,经常会将转像及变焦集成到目镜上,这样更有利于整体进行密封设计。因此设......

提出一种七、九、十一次变系数多项式曲线设计方法,通过对凸轮曲线方程及特性参数进行计算,绘制其特性参数图谱,达到改变凸轮曲线......