Novel Non-mechanical Liquid Crystal based Foveated Imaging System

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,960.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
N10PC20065
Award Id:
96719
Agency Tracking Number:
09SB3-0118
Solicitation Year:
n/a
Solicitation Topic Code:
DARPA 09-008
Solicitation Number:
n/a
Small Business Information
450 Courtney Way, Unit 107, Lafayette, CO, 80026
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
602673188
Principal Investigator:
HUGH MASTERSON
PRINCIPAL INVESTIGATOR
(303) 604-0077
HUGH@BNONLINEAR.COM
Business Contact:
MARK TANNER
VICE PRESIDENT
(303) 604-0077
MTANNER@BNONLINEAR.COM
Research Institution:
n/a
Abstract
A novel foveated imaging technology is proposed, suitable for integration into an urban surveillance system. The proposed technology has no moving parts has low power requirements and requires a single imaging camera. The technology exploits the beam steering capabilities of liquid crystal polarization gratings (LCPGs) which diffract light only into the m=1 orders according to the handedness of incident circular polarization which is controlled by switchable halfwave plates. The LCPGs steer the high field angles into the axial direction of a lens train where a high resolution image is produced. Field angles simultaneously steered into off-axis directions produce a blurred image region due to lens aberrations. A second LCPG stack and lenses re-image and re-steer the object field to the image plane reversing grating dispersion and image shift. The result is a static image field with a moveable foveated region. The technology is suitable for wide angle imaging as the lens aberrations do not have to be corrected for high angles. The system is integrated with a hemispherical mirror to capture a 360oX20o field of regard. A 10x foveated region zoom is provided by additional small diameter axial lenses. Polarization independent operation is possible using a two arm system.

* information listed above is at the time of submission.

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