SPATIALLY VARIABLE FILTER SYSTEMS AND METHODS

摘要

An improved compact spectrometer system comprising an improved spatially variable filter is disclosed herein. A spatially variable filter may be configured to have a plurality of different transmission profiles at different locations of the filter, to spectrally separate light incident on the filter. The spatially variable filter may comprise a plurality of different filter regions having different transmission profiles, and a plurality of similar filter regions comprising similar transmission profiles. The spatially variable filter may be optically coupled to a detector comprising a plurality of detector elements configured to measure the intensity of light. The measurement data generated by the plurality of detector elements coupled to the plurality of similar filter regions can be used to determine a spatial variation on incident light intensity.

主权项

1. A spectrometer comprising:
a spatially variable filter comprising a first plurality of similar spaced apart filter regions having similar transmission profiles and a second plurality of at least five different spaced apart filter regions having at least five different transmission profiles; and a detector comprising a plurality of detector elements coupled to the spatially variable filter; and a processor configured with instructions to receive data from the detector and output spectral data to determine a spectrum in response to transmitted light intensity at the plurality of similar spaced apart filter regions and the plurality of different spaced apart filter regions.