NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A Compact Polarization ImagerA new type of image detector has been designed to analyze the polarization of light simultaneously at all picture elements (pixels) in a scene. The Integrated Dual Imaging Detector (IDID) consists of a polarizing beamsplitter bonded to a custom-designed charge-coupled device with signal-analysis circuitry, all integrated on a silicon chip. The IDID should simplify the design and operation of imaging polarimeters and spectroscopic imagers used, for example, in atmospheric and solar research. Other applications include environmental monitoring and robot vision. Innovations in the IDID include two interleaved 512 x 1024 pixel imaging arrays (one for each polarization plane), large dynamic range (well depth of 10(exp 6) electrons per pixel), simultaneous readout and display of both images at 10(exp 6) pixels per second, and on-chip analog signal processing to produce polarization maps in real time. When used with a lithium niobate Fabry-Perot etalon or other color filter that can encode spectral information as polarization, the IDID can reveal tiny differences between simultaneous images at two wavelengths.
Document ID
19990052890
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Thompson, Karl E.
(Johns Hopkins Univ. Laurel, MD United States)
Rust, David M.
(Johns Hopkins Univ. Laurel, MD United States)
Chen, Hua
(Johns Hopkins Univ. Laurel, MD United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Johns Hopkins APL Technical Digest
Volume: 16
Issue: 3
Subject Category
Optics
Funding Number(s)
CONTRACT_GRANT: NAGw-2866
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available