20 March 2017 Shift-encoded optically multiplexed imaging
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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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Vinay Shah, Yaron Rachlin, R. Hamilton Shepard, Tina Shih, "Shift-encoded optically multiplexed imaging," Optical Engineering 56(4), 041314 (20 March 2017). https://doi.org/10.1117/1.OE.56.4.041314 . Submission: Received: 9 January 2017; Accepted: 7 March 2017
Received: 9 January 2017; Accepted: 7 March 2017; Published: 20 March 2017
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