应用光学, 2018, 39 (5): 613, 网络出版: 2018-10-06   

一种可实现收发一体连续扫描的微透镜阵列

Micro-lens array for integrative transmitting and receiving continuous scanning
作者单位
天津大学 精密仪器与光电子工程学院 光电信息技术教育部重点实验室, 天津 300072
摘要
设计了一种可实现收发一体连续扫描的微透镜阵列, 该三片式微透镜阵列以加入场镜的开普勒望远结构为原型, 通过微透镜阵列之间的微小横向位移进行接收视场的选择与发射光线的同步偏转, 完成扫描光学系统对大视场区域的光束收发。设计约束望远镜的视觉放大率为1, 即入射和出射端口的微单元通光孔径相等, 从而实现收发共用且不会造成能量损失和串扰。利用ZEMAX光学设计软件, 采用发射、接收端口单独设计然后拼接的方法搭建模型。微透镜阵列工作中心波长为1 064 nm, 凝视视场为±1.06°, 扫描视场为±10°, 单元规格为1 mm×1 mm, 且只需移动一片即可实现双向扫描, 具有体积小、扫描角度大、灵敏度高等优点。
Abstract
A newly designed micro-lens array, being used integrative transmitting and receiving combined with continuous scanning, was proposed and demonstrated. Based on the typical Kepler telescope structure with a field lens, the micro-lens arrays with three-piece style, conducts the selection of receiving field of view (FOV) and the synchronous deflection of transmitting light with large FOV by laterally slight displacement between the two contiguous micro-lenses. In order to avoid the loss and crosstalk of light energy, the visual magnification of telescope is constrained to be 1 which makes the apertures of micro-elements in incident and emitting ports keep consistent. With the ZEMAX software, the entire optical model is mainly composed of transmitting and receiving parts that are designed independently and joined together later. The micro-lens array’s central wavelength is 1 064 nm, with ±1.06° instantaneous FOV and ±10° scanning FOV, the size of each micro-element is 1 mm×1 mm.In addition, the bilateral scanning can be realized with only one moving element.The designed system is characterized by the advantages including compact size, large scanning range and high sensitivity.

谢洪波, 王瑶, 毛晨盛, 苏永鹏, 杨磊. 一种可实现收发一体连续扫描的微透镜阵列[J]. 应用光学, 2018, 39(5): 613. Xie Hongbo, Wang Yao, Mao Chensheng, Su Yongpeng, Yang Lei. Micro-lens array for integrative transmitting and receiving continuous scanning[J]. Journal of Applied Optics, 2018, 39(5): 613.

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