AN OPTICAL SPECTROMETER

摘要

An optical spectrometer (1, 100, 200) has a collector (15) for collecting a reflected probe, and a separate collector (23) for collecting luminescence. In one spectrometer (200) the collimated luminescence and reflectance beams are routed through an optical subsystem (6), a monochromator (7), and further optical components (8). Thus reflectance (16), calibration (11), and luminescence (24) detectors receive inputs from the same optical subsystem (8). This arrangement allows calibration (spectral accuracy and even correction or repair), as well as modulation reflectance spectroscopy and luminescence spectroscopy to be simultaneously performed without the need for a filter such as a notch filter.