Spectrometric using broadband filters with overlapping spectral ranges
First Claim
1. A spectrometer which includesa filter arrangement, in addition to any optional filters for limiting an operational wavelength range of the spectrometer, the filter arrangement including a filter set with a plurality of unique and individual broadband optical filters or broadband optical filter areas each of known transmission and being located or selectively locatable in a path of collected incident spectral radiation;
- at least one detector arranged to measure the spectral radiation passing through at least one of the broadband filters located in the path of collected incident spectral radiation; and
signal-processing means for recovering the spectrum of the collected spectral radiation from measurements by the detector.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention provides a spectrometer (10) which includes a filter arrangement (16,18), in addition to any option filters (20) for limiting an operational wavelength range of the spectrometer, the filter arrangement (16,18) comprising a plurality of broadband optical filters or broadband optical filter areas each of known transmission and being located or selectively locatable in a path of collected incident spectral radiation (44). The spectrometer further includes at least one detector (24) arranged to measure the spectral radiation passing through at least one of the broadband filters located in the path of collected incident spectral radiation, and signal-processing means (34) for recovering the spectrum of the collected spectral radiation from measurements by the detector (24).
-
Citations
12 Claims
-
1. A spectrometer which includes
a filter arrangement, in addition to any optional filters for limiting an operational wavelength range of the spectrometer, the filter arrangement including a filter set with a plurality of unique and individual broadband optical filters or broadband optical filter areas each of known transmission and being located or selectively locatable in a path of collected incident spectral radiation; -
at least one detector arranged to measure the spectral radiation passing through at least one of the broadband filters located in the path of collected incident spectral radiation; and signal-processing means for recovering the spectrum of the collected spectral radiation from measurements by the detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A spectrometer which includes a filter arrangement, in addition to any optional filters for limiting an operational wavelength range of the spectrometer, the filter arrangement comprising a filter set with a plurality of unique and individual broadband optical filters or broadband optical filter areas each of known transmission and being located or selectively locatable in a path of collected incident spectral radiation.
Specification