微形貌观测镜变焦系统的设计

The Optical Design for Micro-profile Zoom Endoscope

提出的微型变倍微形貌观测镜光学系统是以微型内窥观测系统作为整个系统的前固定组、以变倍组和补偿组构成双组元全动型变倍系统,以CCD作为固定像平面的观测系统。利用高斯光学计算公式建立了系统的数学模型,计算了变焦透镜组的运动曲线。选定了该系统初始结构,进行了像差优化计算,给出了像差曲线和最终的设计数据,符合像差要求。该系统具有3种应用形式,整个系统是连续变倍内窥式微形貌观测镜,其前固定组是内窥式微形貌观测镜,其变倍系统是连续变倍微形貌观测镜。变焦范围6×～16×,分辨最小细节可达2.5μm左右。

A micro-profile zoom endoscope system of tiny area was proposed.The system included a fixed micro endoscope in the foreside,a dualistic both-moved zoom lens composed of zoom part and compensatory part,a chip of CCD placed in fixed image plane.The system has three application modes:the whole is a micro-profile zoom endoscope system;the fixed former part is a micro-profile endoscope;the zoom part is micro-profile zoom microscope.Optical zoom range is 6 to 16 magnifications.Minimal distinguishable detail is about 2.5 μm.