因为医用内窥镜既不是望远镜又不是显微镜,所以它的视放大率不是常数,而与工作距离成反比。本文提出了一种医用内窥镜视放大率的测量原理和测试方法,导出了计算公式。并给出了实例,籍助该例证明了本文所述方法是可行的。 Because the medical endoscope is neither a telescope nor a microscope, its apparent magnification is not constant, but inversely proportional to the working distance. This paper presents a measurement principle and test method of medical magnification of the endoscope, and derives the calculation formula. And gives an example, with the help of this example shows that the method described in this article is feasible.