1、38 4 S ;Vol.38, No.42011 M4CHINESE JOURNAL OF LASERS April, 2011激光扫描转镜扫描轨迹的分析计算纪荣祎 赵长明 陈 国( v;,100081)K1 ; “d1Fs。V+ ; ?, B ,w EVr T,s ;L E1“,i E1“ wL。“d; ; E; dLms | TN249 DS M A doi:10.3788/ CJL201138.0408003Analysis andCalculation of Scan Trace of Laser ScanningRotation MirrorJi Rongyi Zhao Changm
2、ing Chen Guo(College of Photo-Electricity Engineering, BeijingInstitute of Technology , Beijing 100081, China)Abstract The scanning rotation mirror is one of the most important components in laser scanning detecting system.Based on the principle of geometrical optics, an analytical expression for th
3、e scan trace of hexahedral column rotationmirror is derived.The relationship between the position of incident beam to rotation mirror and the scan trace is alsoanalyzed.In addition, the relation curve of scan trace versus scanning angle is produced.The structuralcharacteristics of the system are the
4、 origin of creating scanning nonlinearity and asymmetry.In order to reduce thenonlinearity of scan trace, a curved rotating mirror scanning system is proposed, and the scan trace for curvedrotating mirror is computed.The numerical results for the designed rotation mirror system show that the system
5、cansolve the nonlinearity problem of plane rotating mirror effectively.Key words imaging systems;laser scanning;scan trace;scanning nonlinearityOCIS codes 110.6880;120.5700;120.5800l :2010-10-26; l :2010-12-13 “:S S/, _.; J .激光技术, 1998,22(6):346 3499 Wu Changjin .The optical principles of scanning mirrors J .Vacuum Electronics, 1993, (6):24 34. ; J .真空电子技术, 1993, (6):24 3410 Ou Jiaming, Wang Ruili, Shang Hecen et alThree forms ofexpression about reflection law J .J .Yunnan NormalUniversity, 2000, 20(1):57 61xE , ,.Q p Vr T J .云南师范大学学报, 2000, 20(1):57 610408003-5
