Focal distance length焦距长度
Focal-Length焦距
focal l length焦距;镜头焦距
focal l length ratio焦距比
focal l length gauge焦距计
focal center length光心高度
focal aperture length calibration焦距检定
focal-length extender[摄] 变倍附加镜头
focal aperture length焦距
A new method of measuring telephoto lens focal length is presented in this paper.
提出一种新的测量长焦透镜焦距的方法。
参考来源 - 基于多摄像机定标的足球比赛场景恢复Using Gradual Aberration optimization Method, a 6m focal length, 600mm aperture off-axis aspherical optical system is successfully aligned.
采用像差逐项优化法,成功地装调了焦距为6m 口径600 mm 的离轴三反镜光学系统。
参考来源 - 三反射镜光学系统的计算机辅助装调技术研究N（名词） the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens 焦距