RADIATION FILTER, SPECTROMETER AND IMAGER USING A MICRO-MIRROR ARRAY

摘要

A spectrometer (10) includes a two-dimensional array of modulatable microm- irrors (18), a detector (20), and an analyzer (22). The micro-mirrors are positioned for receiving individual radiation components forming a part of a radiation source. The micro-mirrors are modulated at different modulation rates in order to reflect individual radiation components at known and different modulation rates. The micro-mirrors combine a number of the reflected individual radiation components and reflect them to the detector. The detector receives the combined radiation components and creates an outpu t signal. The analyzer is coupled to the detector to receive the output signal and to analyze at least some of the individual radiation components making u p the combined reflection. By using a micro-mirror array that modulates the radiation components at different rates, all of the radiations components ca n be focused onto a single detector to maximize the signal-to-noise ratio of t he detector.