大口径近红外波前检测装置光机设计

Opto-mechanical design of large-aperture near-infrared wavefront detection device

自适应光学校正系统的主要功能是校正入射光的波前失真和补偿波前畸变,为了测量自适应光学系统的波前误差,采用非球面技术研制了一种工作波长为1030 nm的波前检测装置。装置能够探测通光口径为200 mm×80 mm的大尺寸近红外矩形光束的波前,系统的中心视场PV值为0.123λ,RMS值为0.0361λ,成像质量良好。在光学设计的基础上完成了结构设计,并在实验室环境下对该装置进行了组装和测试。测试结果表明,装置的光学参数和机械参数均满足设计的指标要求,可以完成自适应光学系统的波前检测任务。

The main function of an adaptive optics correction system is to correct for wavefront distortion and compensate for wavefront distortion of incident light.In order to measure the wavefront error of the adaptive optics system,a wavefront detection device with a working wavelength of 1030 nm was developed using nonspherical technology.The device could detect the wavefront of a large-size near-infrared rectangular beam with a clear aperture of 200 mm×80 mm,and the center field of view of the system had a PV value of 0.123λand an RMS value of 0.0361λ,which indicated the imaging quality was good.Based on the optical design,the structural design of the device was completed and the device was assembled and tested in the laboratory environment.The test results show that the optical and mechanical parameters of the device meet the design specifications and can complete the wavefront detection task of the adaptive optics system.