High accuracy for the time measuring is required in modern scientific experiment , scanning speeds on the image plane is a reference for the time measurements in high speed rotating mirror camera , and , it changes as the rotating velocity only 现代科学实验对时间信息的测量提出了极为严格的要求,对于高速转镜相机而言,其像面上的扫描速度是时间测量的基准,扫描速度值唯一地随转镜速度而变。
This paper presents a method of improving on frame & horizontal synchronization in laser phototypesetter , by using singal - chip computer system to detect real - time frequency deviation and adjust film transmission speed 摘要提出了一种在激光照排机电控系统中，利用单晶片微机对转镜扫描光栅频率信号的暂态波动量进行检测、提取，并以此实时校正系统输片速度，实现场扫描对行扫描的跟踪、补偿，从而提高行、场扫描同步精度的方案。
Reasons of imaging excursion of two rotating mirror high speed cameras used simultaneously are discussed , and the influence to images are analysed according to the theories and experiments , such as the signal drift of the magnetoelectric sensor and improperly operating etc 摘要讨论了两台联动转镜式高速相机像漂移的各种原因，从理论和实验对相机像漂移的影响因素进行了分析，比如磁电式传感器、材料、制作工艺、装配精度及操作不当等。
Meanwhile , a synchronous signal is generated to be the start signal of the high speed snapshot . in this case , the effective length of the film is increased enormously , which means that the resolution of the camera may be improved at the same rotating speed 而且在测速的同时产生了一个高精度的同步信号作为高速摄影的触发信号源,使得用于记录信息的胶片的有效使用长度得到了很大的提高,这就意味着转镜相机的时间分辨率在相同的转速下得到了提高。
Started from the principle and performances of high speed rotating - mirror streak camera , some essential issues , such as the reason of the scanning speed vibration , the disadvantages of the former velocity sensor , are discussed . and then , a brand new speed - measuring method is proposed 论文从高速转镜式条纹相机的原理、性能出发,讨论了相机扫描速度不均匀性的原因;基于过去速度传感器速度低、精度差、可控性和人机对话界面缺乏的弊病,提出了一种全新的测速方案。
This paper describes principle and general design on rotating deflector of the laser scanner according to application . theory on brushless dc motor is studied and structures of the mechanics and control system have been designed according to special requirements of the rotating laser scanner . the scanning motor developed has been tested synthetically in performance 本论文针对转镜式激光扫描器的应用，实施了转镜式激光扫描器的原理及总体方案设计，对无刷直流电动机的理论进行了探讨，并针对转镜式激光扫描器的特殊要求进行了扫描器的机械结构及其控制系统的结构设计，对研制的扫描电机的性能进行了综合实验。
Efforts are concentrated on how to improve the performances of the synchronous and velocity sensor of high speed rotating mirror camera , creative ideas in this paper are displayed as follows . ( 1 ) high speed rotating mirror camera signal is processed by means of opto - electronic system . the advantages of the opto - electronic system , such as good emi resistance and fast processing ability , are employed to optimize the design 本文的工作就是围绕如何提高高速转镜相机同步与转速传感器的性能开展的,主要工作内容和创新点如下: ( 1 )利用光电系统对高速转镜相机同步与速度传感信号进行处理本文利用光电传感系统的抗电磁干扰及可高速处理的特性,把高速旋转状态下反射镜的时间参量转换为光信号,再经过光探测器转换为电信号。
Abstract : in this paper ， a ray - optics analysis is performed to investigate the asymmetry of dual beam scanning field produced by a rotating polygon . some basic equations of dual beam scan are derived ， such as ， the position vector for the incident point ， the scalar expression for reflected ray ， scan pattern on observation plane ect . the far - field asymmetry of the scanning field has been discussed 文摘:应用几何光学理论研究了多光束转镜扫描场的非对称性，导出多光束扫描入射点位置矢量、反射线标量表达式、观察面上的扫描轨迹方程，并研究了扫描远场的非对称性。
Study on the laser scanner is very important since fluctuate of rotating speed of the motor , wobble of the shaft of the laser scanner , tremble introduced by motor changing phase , shake generated out of dynamic balance , turbulence introduced by the deflector rotating at high speed have an influence on rotating shaft and light beam so as to decrease quality of the laser imagesetter 转速的波动、扫描器主轴的晃动、电机换相过程中的抖动、动不平衡产生的震动、转镜高速旋转产生的湍流对转轴和光束的影响等诸多因素，直接影响激光照排的质量。所以，对转镜式激光扫描器的研究有十分重要的意义。
Compared to other traditional rotating mirror scanning system and acoustic - optical scanning system , its scanning speed is faster and it can also offer higher resolution . in the same time , it offers precise stabilization and random - access optical beam scanning . it can satisfy the need of high - speed scanning systems , for example , high - resolution laser tv , high - speed printer and laser radar , and so on 光学相控阵是一种新型的光扫描技术，它同传统的转镜扫描、声光扫描等扫描技术相比具有扫描速度快、分辨率高和随机存取等优点，可以满足高清晰度激光电视、高速激光打印机、激光雷达等高速扫描的要求。
