light beam scanning

基本解释

The optical scanning device includes: an optical deflector that scans and deflects a light beam emitted by an optical source component;
以及成像光學系統，其被配置爲將所述光學偏轉器的偏轉表麪掃描偏轉的光束成像在掃描表麪上；
ip.com
The optical scanning device includes an oscillating mirror which has a pair of electrodes and a mirror oscillator, and which deflects a light beam;
該光學掃描裝置包括振動反射鏡，該振動反射鏡具有一對電極和反射鏡振動器，且該振動反射鏡使光束偏轉；
ip.com
Electonic plate scanning: A process that uses a light beam to scan the offset plate for the purpose of recording the position of image areas on the plate and to evaluate the amount of ink required .
電子印版掃描：用光束掃描柯式印版的過程中，記錄印版上的印紋位置，用以計算需用墨量。

It works by scanning a laser beam across an object and manipulating the reflected light to produce an extremely narrow focal plane.
ECONOMIST: The Archimedes palimpsest: Eureka! The