Mr. David R. Cochrane Profile

David R. Cochrane

Director of Marketing at Christie Digital

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Proceedings Article | 13 November 2010 Paper

Hyperspectral and multispectral sensors for remote sensing

Sukhbir Kullar, Andrey Lomako, James Miller, Cees Draijer, Nixon O, David Cochrane

Proceedings Volume 7857, 78570O (2010) https://doi.org/10.1117/12.876474

KEYWORDS: Sensors, Charge-coupled devices, Remote sensing, Optical filters, CCD image sensors, Quantum efficiency, Infrared sensors, Dielectric filters, Contrast transfer function, CMOS sensors

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Remote Hyperspectral and Multispectral sensors have been developed using modern CCD and CMOS fabrication techniques combined with advanced dichroic filters. The resulting sensors are more cost effective while maintaining the high performance needed in remote sensing applications. A single device can contain multiple imaging areas tailored to different multispectral bandwidths in a highly cost effective and reliable package. This paper discusses a five band visible to near IR scanning sensor. By bonding advanced dichroic filters onto the cover glass and directly in the imaging path a highly efficient multispectral sensor is achieved. Up to 12,000 linear pixel arrays are possible¹ with this advanced filter technology approach. Individual imaging areas on the device are designed to have unique pixel sizes and clocking to enable tailored imaging performance for the individual spectral bands. Individual elements are also based on high resolution Time Delay and Integration technology^2,3 (TDI) to maximize sensitivity and throughput. Additionally for hyperspectral imagers, a split frame CCD design is discussed using high sensitivity back side illuminated (BSI) processes that can achieve high quantum efficiency. As these sensors are used in remote sensing applications, device robustness and radiation tolerance was required.

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