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Hyperspectral

OptoKnowledge has been developing hyperspectral imaging systems for 20+ years. We offer systems that cover wavelength ranges from UV-visible-near infrared, short-wave-infrared, up to mid-wave and long-wave infrared. We have a line of Commercial Off The Shelf (COTS) systems, and we can customize one of our many systems to meet your specific needs. Since 1991, OptoKnowledge has developed sensors using a wide variety of instrument types, including flat grating plus lenses-based systems, Prism-Grating-Prisms (PGP), Offner spectrometers, etc., and has been continuously improving the software control system for our sensors. Our sensors cover a wide range of configurations including pushbroom, mirror-based scanning and rotation-stage based sensors, as well as fiber-reformatted staring sensors. Performance characteristics range from ultra high speed, to very low noise.

The current product line of Offner-based spectrometers represents the latest technological advances, and includes both scanning systems, HyperScan, and non-scanning systems, HyperVideo. They HyperScan family of sensors can be used for either airborne applications or static ground based scenes. All models include our HyperVision software, which provides universal sensor control, data capture, and real-time visualization, offering the absolute best comprehensive software package for hyperspectral data collection. Our non-scanning HyperVideo systems provide full data cubes with each camera frame, providing the ability to use the power of hyperspectral imaging on dynamic scenes. These systems also include visualization and processing software, which enable the user to analyze and render the data in real-time.

Spectral Imaging combines the strength of conventional imaging with that of spectroscopy to accomplish tasks that separately each can not perform. It enables spectral analysis from afar using remote sensing techniques. The product of a spectral imaging system is a stack of images of the same object or scene (i.e., an image cube), each at a different spectral narrow band (or "color"). The field is divided into techniques called multispectral, hyperspectral and ultraspectral. While no formal definition exists, the difference (counter to various popular notions) is not based on the number of bands, but rather on the spacing of the bands. Multispectral deals with several images at discrete and somewhat narrow bands. The "discrete and somewhat narrow" is what distinguishes multispectral in the visible from color photography. Multispectral sensor may have many bands covering the spectrum from the visible to the longwave infrared. Multispectral images do not produce the "spectrum" of an object. Hyperspectral deals with imaging narrow spectral bands over a contiguous spectral range, and produce the spectra of all pixels in the scene. So a sensor with only 20 bands can also be hyperspectral when it covers the range from 500 to 700 nm with 20 10-nm wide bands. (While a sensor with 20 discrete bands covering the VIS, NIR, SWIR, MWIR, and LWIR would be considered multispectral.) Ultraspectral is typically reserved for interferometer type imaging sensors with a very fine spectral resolution. These sensors often have a low spatial resolution of several pixels only, a restriction imposed by the high data rate.

Hyperspectral
       
HyperScan VNIR micro

HyperScan VNIR Micro

Small hyperspectral imaging system
for laboratory and/or field work.

[details]

HyperScan SWIR

HyperScan SWIR

Hyperspectral imaging systems operating
in the short wave infrared (SWIR) up to 2.5 Ám

[details]

       
Airborne: UAV & Manned systems

Airborne: UAV & Manned systems

Complete hyperspectral imaging systems
for airborne applications with small size,
weight, and power

[details]

4DIS

HyperVideo / 4DIS

Snapshot hyperspectral imaging systems
for dynamic scenes, e.g., explosions, muzzle
flashes, and intercept events

[details]

       
HyperLight

HyperLight

Broadband high intensity illumination
source, ideal for hyperspectral data collects

[details]

HyperLCTF

HyperLCTF

Liquid crystal tunable filter based
hyperspectral imaging systems

[details]

       
HyperScan SWIR & VNIR

Legacy HyperScan

Hyperspectral imaging systems
that have been discontinued

[details]

HyperVision

HyperVision

Software for control and data acquisition of hyperspectral imaging systems including
GPS and IMU synchronized collection

[details]

       
       

Click through to find a comparison of, and detailed specifications for, our various hyperspectral instruments including the HyperLCTF, HyperScan, and 4DIS Product lines, which cover the spectrum from 400nm to 5000nm.

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