Addressable optical computer and filter
First Claim
Patent Images
1. A system for optical real time analog computation by manipulating optical signals in two spatial dimensions simultaneously, including in combination:
- first and second terminal means for coupling beam signals, respectively, as inputs;
optical computation means;
first means for coupling said first terminal means to said computation means as an input;
second means for coupling said second terminal means to said computation means as an input;
said computation means having the outputs of said first and second coupling means as inputs and providing a mathematical relationship of its inputs, as an output,said computation means including at least one spatial light modulator (SLM) for recording first input images and for reproducing output images when illuminated by second input images,said SLM including a free carrier source for recording and reproducing optical images by forming charges in potential wells created by applying voltages to electrodes in said free carrier source.
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Abstract
The disclosure describes method and apparatus for optically computing the impulse response h, transfer function H, coherence function γ, impulse coherence Γ, product Sy Hr, division 1/Sx, cross-correlation Ryx, cross-power spectrum Gyx, complex conjugate Sx*, and convolution y*x of signals y and x in real time. The method comprises the steps of computing the mathematical function of a given parameter. The apparatus of the invention comprises the realization of optical elements for performing the tasks of the method.
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Citations
54 Claims
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1. A system for optical real time analog computation by manipulating optical signals in two spatial dimensions simultaneously, including in combination:
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first and second terminal means for coupling beam signals, respectively, as inputs; optical computation means; first means for coupling said first terminal means to said computation means as an input; second means for coupling said second terminal means to said computation means as an input; said computation means having the outputs of said first and second coupling means as inputs and providing a mathematical relationship of its inputs, as an output, said computation means including at least one spatial light modulator (SLM) for recording first input images and for reproducing output images when illuminated by second input images, said SLM including a free carrier source for recording and reproducing optical images by forming charges in potential wells created by applying voltages to electrodes in said free carrier source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of optical real time analog computation by manipulating optical signals in two spatial dimensions simultaneously including the steps of;
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coupling beam signals from first and second sources as inputs to an optical computation unit having a spatial light modulator (SLM); recording first optical images in the SLM and reproducing output optical images from the SLM by illuminating the SLM with second optical images; said recording and reproducing steps including applying voltages to a free carrier source in the SLM, and forming charges in potential wells in the free carrier source, whereby two dimensional optical images are recorded and reproduced from the free carrier source; and providing a mathematical relationship of inputs as outputs from said computation unit. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification