A hybrid optical-digital system for computing superposition integral

Yansong Chen

doi:10.1117/12.2294899

4 December 2017 A hybrid optical-digital system for computing superposition integral

Yansong Chen

Proceedings Volume 1230, International Conference on Optoelectronic Science and Engineering '90; 12307A (2017) https://doi.org/10.1117/12.2294899
Event: The Marketplace for Industrial Lasers 1990, 1990, Chicago, IL, United States

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.

Citation Download Citation

Yansong Chen "A hybrid optical-digital system for computing superposition integral", Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 12307A (4 December 2017); https://doi.org/10.1117/12.2294899

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