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Pacific Advanced Technology

Pacific Advanced TechnologyPacific Advanced TechnologyPacific Advanced Technology

Leaders in Development of Infrared Hyperspectral Imaging

Leaders in Development of Infrared Hyperspectral ImagingLeaders in Development of Infrared Hyperspectral Imaging

Lenslet Arrays

The lenslet arrays are fabricated by a photo-lithographic process and thus can be mass produced and low cost. Shown here is a wafer showing several 2x2 lenslet arrays that will be diced to produce the optical elements that will be integrated into the Helios miniature infrared hyperspectral camera

Helios

Development of Flyable Infrared Hyperspectral Camera

The success of the Athena proof of concept program lead to a contract with the US Army and SOCOM to develop a Helios prototype flyable LWIR hyperspectral camera for the detection of gas phase chemical warfare agents. 

Smallest Infrared Hyperspectral Camera

Helios is the smallest infrared hyperspectral camera ever developed.  Based on the lenslet array technology enabled such a small, light weight infrared hyperspectral camera. In addition the parallel spectral image collection removes temporal variation in the scene that can affect the identification algorithms

Testing and Field Demonstration

Helios is scheduled to be field tested in the summer of 2020. It will be flown on a DJI Metrice 600 drone that will be stabilized to allow hyperspectral data cubes to be collected of gas phase targets on the ground.  The gas identification will be performed using spectral analysis from the hyperspectral data cube. 

Miniature electronics integrated with the sensor will perform pre-processing of the data and down link to a ground station where post processing will complete the identification process.

Helios Optics

The 4 x 4 Lenslet Array

Optics Ready for Insertion

Optics Ready for Insertion

The lenslet array optics are smaller than a nickle

Optics Ready for Insertion

Optics Ready for Insertion

Optics Ready for Insertion

The lenslet array sits in the baffle that will be integrated with the cold-shield

Complete Optical Assembly

Optics Ready for Insertion

Complete Optical Assembly

The lenslet array assembly ready to be integrated with the FPA

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