Patent ID: 7791027

Claim:
An IR spectrometer comprising: a light source configured to illuminate a sample with light; a grating configured to spectrally disperse the light that has illuminated the sample to provide a dispersed light; a controller; a MEMS array configured to be actuated to control a diffraction of the dispersed light to provide a plurality of wavelengths of light, the MEMS array comprising a plurality of individually controllable diffractive elements; a switched voltage array responsive to the controller and coupled to the MEMS array, the switched voltage array comprising a plurality of switched voltage sources configured to selectively turn the individually controllable diffractive elements of the MEMS array optically-on and optically-off responsive to the controller to diffract the plurality of wavelengths of light according to a hadamard matrix; and a detector configured to detect the plurality of wavelengths of light; wherein the controller includes a power management system adapted to control the MEMS array to manage a power consumption of the MEMS array; and wherein the controller is further configured to control the switched voltage array and the MEMS array such that the IR spectrometer is operated as a hadamard transform spectrometer.