NASA 1998 SBIR Phase I


PROPOSAL NUMBER: 98-1 13.02-0610

PROJECT TITLE: An Indium Gallium Arsenide - Based Hyperspectral Imager for 0.4 - 2.5 Ám

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

Hyperspectral imaging is typically performed with multiple detector arrays. The arrays are combined with bandpass filters, allowing remote sensing of a single band. We propose to develop a hyperspectral imaging system, based on a single indium gallium arsenide (InGaAs) focal plane array (FPA), capable of imaging the entire visible/near-infrared wavelength range from 0.4 Ám to 2.5 Ám. The system will feature spectral resolution < 10 nm, 640 pixel spatial resolution, low power dissipation, and modular construction. The core of the system will be a 640 x 512 element In.82Ga.18As FPA with a long wavelength cutoff of 2.6 Ám. The InP substrate will be removed allowing sensitivity to wavelengths as short as 0.4 Ám. Spectral dispersion will be achieved using a compact imaging spectrograph from SPECIM installed in a C-mount lens housing attached to our camera. Low power dissipation will be obtained by elevated operating temperature (greater than 250K) and innovative electronics. During Phase I, we will develop and deliver a prototype system based on lattice-matched InGaAs with a 1.7 Ám cutoff wavelength. By the end of Phase I, we will have designed the full 0.4 Ám to 2.5 Ám imager to be optimized and delivered during Phase II.

POTENTIAL COMMERCIAL APPLICATIONS

This program will bring a system to market for quality control applications in food processing, petroleum refining, satellite imaging, and artwork analysis. A potential market of over 10 million in the first two years, and over 100 million by year 5 is envisioned for this product.

NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR

Dr. Marshall J. Cohen
Sensors Unlimited, Inc.
3490 U.S. Route 1, Bldg. 12
Princeton , NJ 08540

NAME AND ADDRESS OF OFFEROR

Sensors Unlimited, Inc.
3490 U.S. Route 1, Building 12
Princeton , NJ 08540