MULTISPECTRAL SIZE-AVERAGED INCOHERENT SPATIAL-FILTERING

被引：4

作者：

ALMEIDA, SP ^{[1
]}

CASE, SK ^{[1
]}

DALLAS, WJ ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV,DEPT PHYS,BLACKSBURG,VA 24061

来源：

APPLIED OPTICS | 1979年 / 18卷 / 23期

关键词：

D O I：

10.1364/AO.18.004025

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method of 2-D size-averaged incoherent recognition filtering is described. White light input illumination is used to multiplex chromatically a continuum of inputs differing in their spatial Fourier spectral magnifications. A two-grating dichromated-gelatin lateral-dispersion compensating device is inserted to correct chromatic dispersion introduced by a computer-generated hologram filter. The resulting registered recognition patterns are added to form a single effective filter size-averaged recognition peak. Using high efficiency compensating gratings and a bleached binary hologram allow the use of a relatively low-power light source. © 1979 Optical Society of America.

引用

页码：4025 / 4029

页数：5

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