针对多光谱照明通信要求,提出了一种新型大视场高增益光学天线.天线采用前组三片式负组透镜、后组四片式正组透镜组合的反远距天线结构,通过理论计算、Zemax 设计优化,设计出视场角(FOV)90°、增益115 的大视场高增益前置接收光学天线,同时具有较小的体积.该光学天线与色散分光系统联合仿真表明,该天线可实现视场角90°×22°、增益20,适用于多光谱照明通信.同时设计出的前置光学接收天线也可独立作为大视场成像光学系统、成像光谱仪前置物镜系统等,具有广泛的适应性.

A new kind of optical antenna for multi-spectral light communication with large gain and wide field of view is proposed.The fore-receiving optical antenna is based on the reversed telephoto optical system and consists of three negative lenses in front and four positive lenses behind.By theoretical analysis and optimization with Zemax,the field of view (FOV) reaches 90° and the optical gain is up to 115,and the size is also compact.The antenna is appropriate for multi-spectral light communication.By cooperating with multi-spectral wavelength division multiplexing system,its FOV is up to 90°×22° and its optical gain is 20.Moreover,the antenna can be independently used as an optical system for wide FOV imaging systems and front-end system of imaging spectrometers.