用非球面透镜扩展点对点红外无线互连传输距离  

Aspheric Lens to Extend the Transmission Distance of Point-to-Point Infrared Wireless Interconnect

作　　者：张红霞[1] 周革[1] 井文才[1] 张以谟[1] 李朝辉[1] 唐锋[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院 光电信息技术科学教育部重点实验室,天津300072

出　　处：《光电子．激光》2002年第11期1124-1127,共4页Journal of Optoelectronics·Laser

基　　金：高等学校优秀青年教师教学科研奖励计划资助项目;天津市自然科学基金资助项目(023602411)

摘　　要：提出了通过加载聚甲基丙烯酸甲酯(PMMA)光学系统来延伸点对点红外无线互连的传输距离,分别设计了平凸、弯月和非球面透镜。平凸和弯月透镜,分别使得30°的发射角变为7.12°、12.96°,1m处的照度分别提高了18.92,5.68倍,链路的传输距离分别扩展为4.4,2.4m。而非球面透镜能够使发散光准直,链路没有向空中发散引起的损耗,能最大地扩展传输距离。加载的光学系统为球面-椭球的准直透镜和椭球-球面的会聚透镜。The polymethyl methacrylate (PMMA) optical system is proposed to extend transmission distance of point-to-point infrared wireless interconnect. Plano-convex lens, meniscus lens and aspheric lens have been designed. Plano-convex lens and meniscus lens change the divergent angle of 30° into 7.12° and 12.96°, enhance the illumination in the distance of 1 meter 18.92 times and 5.68 times, extend the transmission distance to 4.4 rn and 2.4 m respectively. The aspheric lenses can collimate the divergent beam, and the light loss of divergence into sky is decreased Spherical-ellipsoidal collimating lens and ellipsoidal-spherical collecting lens compose optical system.

关 键 词：非球面透镜 点对点红外无线 互连 传输距离 红外收发器件 聚甲基丙烯酸甲酯 平凸透镜 弯月透镜 无线局域网 

分 类 号：TN925.93[电子电信—通信与信息系统]