激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2001年
2期
36-37，39
,共3页
吕罗文%胡玉禧%周绍祥
呂囉文%鬍玉禧%週紹祥
려라문%호옥희%주소상
光盘读出头%聚焦误差探测%光斑尺寸检测法光盘读出头%聚焦误差探测%光斑尺寸检测法
光盤讀齣頭%聚焦誤差探測%光斑呎吋檢測法光盤讀齣頭%聚焦誤差探測%光斑呎吋檢測法
광반독출두%취초오차탐측%광반척촌검측법광반독출두%취초오차탐측%광반척촌검측법
optical readout head%focus error detection%spot size detection method
光斑尺寸法是数字光盘信息存储中的典型聚焦误差探测方法。本文推导了误差信号和离焦量关系的理论公式，分析了探测器上不同分割线间距和探测器数目对聚焦误差灵敏度与线性范围的影响。
光斑呎吋法是數字光盤信息存儲中的典型聚焦誤差探測方法。本文推導瞭誤差信號和離焦量關繫的理論公式，分析瞭探測器上不同分割線間距和探測器數目對聚焦誤差靈敏度與線性範圍的影響。
광반척촌법시수자광반신식존저중적전형취초오차탐측방법。본문추도료오차신호화리초량관계적이론공식，분석료탐측기상불동분할선간거화탐측기수목대취초오차령민도여선성범위적영향。
Spot size detection method is representative method to obtain a focus error digital optical disk storage system.This paper deduces the theory formula between FES (focus error signal)and defocus,and using the formula we work out the computer emulation figure about the relation head system of different interval of three-segmentation detector.This paper analyzes the relation between interval of segmentations and detection sensitivity and linear range,and also discusses the cause why the method needs two detectors.
