Optical Element, Device, Method, and Applications

Abstract

A novel phase-coded aperture, associated imaging system, and design method is disclosed. The optical imaging system includes a coded-aperture followed optically by a detector array and includes an image processor. A diffraction pattern in the form of a band-limited uniformly redundant array is formed on the detector array when focusable radiation from a point source in object space is modulation by the transmission function of the coded-aperture. Since diffraction effect cannot be ignored in the optical regime, an iterative phase retrieval method is used to calculate the phase-coded aperture transmission function. Correlation type processing can be applied for the image recovery.

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Document Details

Document Type
Technical Report
Publication Date
Apr 14, 2011
Accession Number
ADA590806

Entities

People

  • Nicholas George
  • Wanli Chi

Organizations

  • University of Rochester

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Amplitude
  • Detectors
  • Diffraction
  • Electric Fields
  • Electromagnetic Radiation
  • Frequency
  • Frequency Domain
  • Gray Scale
  • Light Transmission
  • Modulators
  • Optical Modulators
  • Optics
  • Patent Applications
  • Radiation
  • Spectra
  • X Rays

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Phased Array Antenna Design.

Technology Areas

  • Space
  • Space - Space Objects