提出了用作近红外高光谱分辨率激光雷达（HSRL）光谱滤波器的视场展宽迈克尔孙干涉仪（FWMI）的设计方法。详细给出了FWMI的设计理论和设计指标的确定过程，通过视场补偿及热补偿设计，使FWMI能在一定温度范围内保证较大的入射视场。给出了针对近红外FWMI的设计结果。性能评估表明，所设计的FWMI可接收的视场角大于2°，并在(20±0.5) ℃的温度范围内具有几乎不变的工作性能。最后通过容差分析，保证了该设计结果能满足现有的加工工艺。该设计过程和方法对FWMI的设计加工具有一定的指导意义。

A design method of field-widened Michelson interferometer (FWMI) applied as the spectroscopic filter for high spectral resolution lidars (HSRLs) is proposed. The theoretical principles and design criteria are described in detail. Making use of the field-widen and thermal compensation conditions, the FWMI can achieve large incident field within a certain temperature range. The design result of the near-infrared FWMI is provided. The performance analysis of designed FWMI indicates that its available incident divergence is larger than 2°, and its working performance remains constant within (20±0.5) ℃. What′s more, according to the tolerance analysis, the design result meets the current glass processing technic. The design procedure and method introduced have guiding significance for the FWMI design and production.