Stc.unm

The University of Arizona

Science & Technology Corporation & Unm

J Scott Tyo

Majeed M Hayat

Sanjay Krishna

Sunil Raghavan

Unal Sakoglu

Stanley K Pau

Russell A Chipman

Bradley M Ratiff

Bradley M Ratliff

Theodore S Turner, Jr

Woo-Yong Jang

A polarization camera includes a microlement polarizer that is situated in proximity to a focal plane array. The microlement polarizer is selectively scanned with respect to an optical image direct to the focal plane array, and an image processor stores a set of images associated with the scanning. Based on the stored images, a polarization image can be produced and displayed. A periodic microelement polarizer modulates the individual images of the set, and these images can be processed by filtering in the spatial frequency domain to isolate contributions associated with one or a combination of Stokes parameters. After filtering, Stokes parameter based images can be obtained by demodulating and inverse Fourier transforming the filtered frequency domain data.

Microgrid imaging polarimeters with frequency domain reconstruction

A semiconductor detector has a tunable spectral response. These detectors may be used with processing techniques that permit the creation of 'synthetic' sensors that have spectral responses that are beyond the spectral responses attainable by the underlying detectors. For example, the processing techniques may permit continuous and independent tuning of both the center wavelength and the spectral resolution of the synthesized spectral response. Other processing techniques can also generate responses that are matched to specific target signatures.

Detector with tunable spectral response

Exemplary embodiments provide an infrared (IR) retinal system and method for making and using the IR retinal system. The IR retinal system can include adaptive sensor elements, whose properties including, e.g., spectral response, signal-to-noise ratio, polarization, or amplitude can be tailored at pixel level by changing the applied bias voltage across the detector. 'Color' imagery can be obtained from the IR retinal system by using a single focal plane array. The IR sensor elements can be spectrally, spatially and temporally adaptive using quantum-confined transitions in nanoscale quantum dots. The IR sensor elements can be used as building blocks of an infrared retina, similar to cones of human retina, and can be designed to work in the long-wave infrared portion of the electromagnetic spectrum ranging from about 8 &#x3bc;m to about 12 &#x3bc;m as well as the mid-wave portion ranging from about 3 &#x3bc;m to about 5 &#x3bc;m.

Infrared retina

A method of generating an image sequence that includes the steps of detecting scene irradiance using detectors in a focal plane array, generating an output image sequence for each of the detectors based on the detected irradiance, and correcting the output image sequence generated by a first subset of detectors in the focal plane array and the output image sequence generated by a second subset of detectors in the focal plane array using the correction provided to the first subset of detectors.

Uniform, non-disruptive, and radiometrically accurate calibration of infrared focal plane arrays using global scene motion

Growing community of inventors

Tucson, AZ, United States of America

J Scott Tyo