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Optical Engineering

Shift-encoded optically multiplexed imaging
Author(s): Vinay Shah; Yaron Rachlin; R. Hamilton Shepard; Tina Shih
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Paper Abstract

In a multiplexed image, multiple fields-of-view (FoVs) are superimposed onto a common focal plane. The attendant gain in sensor FoV provides a new degree of freedom in the design of an imaging system, allowing for performance tradeoffs not available in traditional optical designs. We explore design choices relating to a shift-encoded optically multiplexed imaging system and discuss their performance implications. Unlike in a traditional imaging system, a single multiplexed image has a fundamental ambiguity regarding the location of objects in the image. We present a system that can shift each FoV independently to break this ambiguity and compare it to other potential disambiguation techniques. We then discuss the optical, mechanical, and encoding design choices of a shift-encoding midwave infrared imaging system that multiplexes six 15 × 15    deg FoVs onto a single one megapixel focal plane. Using this sensor, we demonstrate a computationally demultiplexed wide FoV video.

Paper Details

Date Published: 20 March 2017
PDF: 13 pages
Opt. Eng. 56(4) 041314 doi: 10.1117/1.OE.56.4.041314
Published in: Optical Engineering Volume 56, Issue 4
Show Author Affiliations
Vinay Shah, MIT Lincoln Lab. (United States)
Yaron Rachlin, MIT Lincoln Lab. (United States)
R. Hamilton Shepard, MIT Lincoln Lab. (United States)
Tina Shih, MIT Lincoln Lab. (United States)


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