1) focuserror
焦距误差
2) out-of-focus error
离焦误差
3) focusing error
聚焦误差
1.
The principle of the detection of the focusing error signal in a holographic optic head is dis- cussed.
讨论了全息光学头聚焦误差信号检测的基本原理。
2.
According to the principle of focusing error for two dimensions laser galvanometer scanning,a dynamic focusing optical model for correcting this error was put forward.
针对二维振镜存在的聚焦误差问题,根据产生聚焦误差的原理,采用动态聚焦技术补偿聚焦误差。
4) focus error
聚焦误差
1.
Analysis of the focus error characteristic in high density optical disk driver;
蓝光高密度光盘驱动器中聚焦误差特性分析
5) focus difference
焦距差
6) pitch error
螺距误差
1.
Based on the analysis of the pitch error measure theorem for screw,the dynamic measure system of pitch error for lead screw constituted by single-chip microcomputer is discussed.
在分析丝杠螺距误差测量基本原理的基础上,简述了由单片微机组成的滚珠丝杠螺距误差动态测试系统,并开发了计算机辅助自动分析测控软件。
2.
The cause of pitch error of NC machine tool and the principle of error compensation were analyzed.
分析了数控机床螺距误差的产生原因和误差补偿原理,介绍了SINUMERIK802S/C系统数控机床螺距误差的等间距补偿方法和基于激光干涉仪的动态补偿方法,并给出了误差补偿实例。
补充资料：变焦距镜头
能在一定范围内改变焦距的摄影镜头。在照相机、电影摄影机或摄像机位置不变时，也能摄下被摄体由远到近或由近到远的画面。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条