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Proceedings Paper

A hybrid optical-digital system for computing superposition integral
Author(s): Yansong Chen
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Paper Abstract

In this paper, a hybrid optical-digital system, consisting of a holographic mask, two Fourier lenses, a CCD detector and a microcomputer, is presented for computing a superposition integral, which is expressed as the integral of input data and impulse response or point-spread -function. In principle, the system can be used for performing an arbitrary linear transform and multiplication of matrices, as well as extracting the features of a pattern. In this system all the spacings between the input, lens, mask and output planes are equal to the focal length of the Fourier lens, The point-spread function is represented by the process of lightwave propagating through the optical system and modulating in the mask. The mask is produced by using computer-generated-hologram techniques. In experimental research, the system is tested by Walsh-Hadamard transform, matrix multiplication and geometric moment integral. The experimental results show that, the measured values of the above integrals are in agreement with the theoretical calculations.

Paper Details

Date Published: 4 December 2017
PDF: 3 pages
Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 12307A (4 December 2017); doi: 10.1117/12.2294899
Show Author Affiliations
Yansong Chen, Institute of Physics (China)

Published in SPIE Proceedings Vol. 1230:
International Conference on Optoelectronic Science and Engineering '90
DaHeng Wang, Editor(s)

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