Patent ID: 7633051

Claim:
Spectral photoelectric measurement transformer, comprising: a) an array of photoelectric transformer elements; b) a plurality of dielectric interference bandpass filters disposed on a common filter support and connected upstream from the array of photoelectric transformer elements and sensitizing the transformer elements to different wavelength ranges of the measurement light, wherein the plurality of bandpass filters are divided into a plurality of identical filter groups, each identical filter group including an identical plurality of different bandpass filters; and c) an optical deflector element connected upstream of the bandpass filters, the optical deflector element having a number of portions corresponding to the number of filter groups, wherein each portion of the deflector element corresponds to a different filter group, wherein each portion of the deflector element deflects a distinct beam of measurement light at an angle of deflection different than any other beam of measurement light for any other portion of the deflector element, such that (i) said distinct beam of measurement light is applied to the filter group corresponding to said portion of the deflector element at an angle of incidence corresponding to said angle of deflection, and (ii) the effective bandpass curves of the bandpass filters of at least all but one of the filter groups is shifted so that the effective bandpass curves of all the bandpass filters have different spectral positions, wherein the half-widths and spectral distances of the bandpass curves of the bandpass filters of each filter group are disposed so that transmission gaps are left free between the bandpass curves, and wherein the widths of the transmission gaps essentially correspond to a multiple of the sought spectral resolution corresponding to the number of filter groups.