We demonstrate the use of graded-index lenses for matched spatial filtering. A matrix of matched filters is constructed, using a Selfoc lens array and Fourier-reflection holography. This combination of stacked planar optics and reflection holography provides a rugged, easily fabricated spatially distributed matched-filter system. Preliminary correlation results demonstrate the feasibility of this system.
© 1988 Optical Society of America
P. Asthana, A. Akiba, T. Yamaki, K. Nishizawa, and M. Oikawa, "Graded-index lens array matched filtering," Opt. Lett. 13, 84-86 (1988)