将来自不同位置的点像的光会聚到一个固定的开口处。在本文中所提及的摄谱仪是把来自许多点像的光会聚且呈现在分光镜的入射缝处。光从每个点像始,经光纤传输止于缝上一个固定的指定的位置上。这样,可同时显示几个点像的 Gives the spotlight from different positions to a fixed opening. The spectrograph referred to in this article is to condense light from many spot images and present them at the entrance slit of the beamsplitter. The light starts at each point and ends at a fixed, designated location on the seam by optical fiber transmission. In this way, several points can be displayed simultaneously