| 摘要 |
PURPOSE:To facilitate measurements of multiple points in a space, by using an entry slit in common. CONSTITUTION:A common slit 1, respectively concaved surface diffraction gradings 2a-2c, and respective exit slits 3a-3c are combined to constitute substantially three units of ordinary Seya-Namioka type spectroscopes: (1, 2a, 3a), (1, 2b, 3b), (1c, 2c, 3c). As directions of fluxes entering the concaved surface diffraction gratings are different from one another, a spectral measurements are conducted on different points with respect all the gratings. As an entry slit is used in common as mentioned in the above, it is possible to make an entire device small and facilitate measurements of many points. |
