Method and system for fabrication and use of a spectral basis filter
AssigneeDRS Network & Imaging Systems, LLC
InventorAnthony J. Ragucci
Life of this patent
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Abstract
An optical system includes a focal plane array having a plurality of pixels defined by a first number of pixels arrayed in a first direction and a second number of pixels arrayed in a second direction. The optical system also includes an optical filter optically coupled to the focal plane array. The optical filter has a plurality of super-pixels. Each of the plurality of super-pixels includes a predetermined number of sub-pixels and each of the predetermined number of sub-pixels is characterized by one of a plurality of oscillatory transmission profiles as a function of wavelength.
Claims20
An optical system comprising:
- a focal plane array having a plurality of pixels defined by a first number of pixels arrayed in a first direction and a second number of pixels arrayed in a second direction;
- and
- an optical filter optically coupled to the focal plane array, wherein the optical filter has a plurality of super-pixels, wherein each of the plurality of super-pixels includes a predetermined number of sub-pixels, each of the predetermined number of sub-pixels being characterized by one of a plurality of oscillatory optical transmission profiles varying in amplitude between zero and one as a function of wavelength.
A method for defining a spectral profile for an optical filter, the method comprising:
- determining one or more characteristics of the spectral profile;
- defining a transmission profile for each of a plurality of sub-pixels, wherein a predetermined number of the plurality of sub-pixels are characterized by an oscillatory optical transmission profile varying in amplitude between zero and one as a function of wavelength;
- and
- associating a weight of a set of relative weights with each of the plurality of sub-pixels.
A method comprising:
- transmitting an optical signal through an optical filter comprising a plurality of super-pixels, wherein each of the plurality of super-pixels comprises a plurality of sub-pixels, wherein a predetermined number of the plurality of sub-pixels are characterized by an oscillatory optical transmission profile varying in amplitude between zero and one as a function of wavelength;
- and
- receiving intensity values associated with each pixel of a detector, wherein each pixel of the detector is associated with one of the plurality of sub-pixels;
- and
- for each of the plurality of super-pixels:
- applying a set of relative weights to corresponding intensity values associated with sub-pixels of the plurality of super-pixels;
- and
- determining an output data.
Dependencies are inferred from the claim text.