电光与控制
電光與控製
전광여공제
ELECTRONICS OPTICS & CONTROL
2015年
1期
101-104
,共4页
激光扫描显示系统%扫描模式%Lissajous%Linescan%MOEMS
激光掃描顯示繫統%掃描模式%Lissajous%Linescan%MOEMS
격광소묘현시계통%소묘모식%Lissajous%Linescan%MOEMS
laser scanning display system%scanning pattern%Lissajous%Linescan%MOEMS
在激光扫描显示系统( LSDs)中,MOEMS对激光束的空间调制主要分为Lissajous与Linescan两种模式。为了深入分析各模式的扫描特点,比较各模式之间的优缺,针对每种模式提出了扫描显示分辨率和轨迹均匀性这两个指标进行对比研究。按照仿真分析得出的最小像元划分方法,相同分辨率下,Lissajous模式对MOEMS快轴频率的最低要求要比Linescan模式大约高57%。另外,利用Matlab对不同MOEMS模式进行同一图像的扫描仿真,仿真结果表明,Lissajous扫描轨迹呈现出上下边缘密、中心疏的不均匀特点,而Linescan扫描轨迹则呈现出喇叭状不均匀特点。
在激光掃描顯示繫統( LSDs)中,MOEMS對激光束的空間調製主要分為Lissajous與Linescan兩種模式。為瞭深入分析各模式的掃描特點,比較各模式之間的優缺,針對每種模式提齣瞭掃描顯示分辨率和軌跡均勻性這兩箇指標進行對比研究。按照倣真分析得齣的最小像元劃分方法,相同分辨率下,Lissajous模式對MOEMS快軸頻率的最低要求要比Linescan模式大約高57%。另外,利用Matlab對不同MOEMS模式進行同一圖像的掃描倣真,倣真結果錶明,Lissajous掃描軌跡呈現齣上下邊緣密、中心疏的不均勻特點,而Linescan掃描軌跡則呈現齣喇叭狀不均勻特點。
재격광소묘현시계통( LSDs)중,MOEMS대격광속적공간조제주요분위Lissajous여Linescan량충모식。위료심입분석각모식적소묘특점,비교각모식지간적우결,침대매충모식제출료소묘현시분변솔화궤적균균성저량개지표진행대비연구。안조방진분석득출적최소상원화분방법,상동분변솔하,Lissajous모식대MOEMS쾌축빈솔적최저요구요비Linescan모식대약고57%。령외,이용Matlab대불동MOEMS모식진행동일도상적소묘방진,방진결과표명,Lissajous소묘궤적정현출상하변연밀、중심소적불균균특점,이Linescan소묘궤적칙정현출나팔상불균균특점。
In laser scanning display systems (LSDs),the Micro-Opto-Electro-Mechanical System (MOEMS) has mainly two patterns for laser beam spatial modulation ,Lissajous and Linescan .In order to analyze the characteristics of each model ,and the advantages and disadvantages of different patterns ,we made comparative study on two indicators of display resolution and track uniformity .According to the least pixel division method simulated,the minimum MOEMS fast axis frequency requirements of Lissajous pattern is about 57% higher than that of Linescan pattern .Simulation was made to the same picture under different pattern based on Matlab.The result indicates that the Lissajous scanning track presents an uneven characteristic of dense upper and lower edges and sparse center ,whereas the Linescan scanning track presents a trumpet-shaped uneven characteristic .