Schroeder D J
Department of Physics, BeloitCollege, Beloit, Wisconsin, USA.
Appl Opt. 1966 Apr 1;5(4):545-8. doi: 10.1364/AO.5.000545.
A new type of plane grating monochromator has been devised in which the grating is illuminated by convergent light. The main feature of this design is an arrangement by which the grating is simultaneously translated and rotated by means of a simple rotation about an axis displaced from the grating face. The motion is such that the spectrum remains in good focus on a fixed exit slit over a range of wavelengths from zero order to 5000 A in the third order for a grating with 600 lines/mm. This type of mount has the advantages of small aberrations and small astigmatism over the usable range. Because there are only two reflections, the instrument is best suited for studying problems where low light level might be of concern, such as for astronomical work or for use in the far ultraviolet.
设计出了一种新型平面光栅单色仪，其中光栅由会聚光照明。这种设计的主要特点是一种装置，通过围绕偏离光栅面的轴进行简单旋转，使光栅同时平移和旋转。这种运动使得在具有600线/毫米的光栅的情况下，从零级到三级的波长范围内，光谱在固定的出射狭缝上保持良好聚焦，波长范围可达5000埃。这种安装方式在可用范围内具有像差小和像散小的优点。由于只有两次反射，该仪器最适合研究可能涉及低光水平的问题，例如用于天文工作或远紫外线应用。
