| 摘要 |
A two-channel spectrometer (20) has a shared objective (22) and a pair of slits (34, 40) at a common image plane (46). Each of the slits (34, 40) receives a portion of the output beam (22) of the shared objective (22) and is optimized for transmitting different wavelengths. A shared double-pass reflective triplet (48) receives the output beams of the slits. The output of the reflective triplet (48) is incident upon a beamsplitter (62), which sends a collimated first reflective triplet output (52) of a first wavelength to a first dispersive element (64), and a collimated second reflective triplet output (54) of a second wavelength to a second dispersive element (70). The outputs (66, 72) of the dispersive elements (64, 70) are directed back to the beamsplitter (62) and the reflective triplet (48) to imaging detectors (76, 78) located at two different locations of the common image plane (46). |
