| 摘要 |
<p>A spectral analyzer and direction indicator (10, 20) and includes reflection gratings (13, 15, 25, 27, 37, 39), associated optical systems (17, 19, 29, 33, 41, 45) and associated detectors (21, 23, 31, 35, 43, 47, 30). The reflection gratings (13, 15, 25, 27, 37, 39) are arranged to provide angles of diffraction which are utilized to determine spectral content and incidence direction of collimated or essentially collimated incident radiation.</p> |
