Spatial light modulator with full complex light modulation capability
First Claim
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1. A method for full complex modulation of light comprising the following:
- a) dividing a picture element into a number of modulating elements;
b) providing addressing circuitry for each of said modulating elements;
c) selecting a net phase and amplitude of modulation;
d) calculating angles to achieve said net phase and said amplitude of modulation;
e) addressing said modulating elements to achieve said angles for independent control of said amplitude and net phase in the picture element response; and
f) resolving said modulation elements as said picture element.
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Abstract
It is possible to control the amplitude and phase modulation of light independently and simultaneously. The invention described here details how to do so by dividing a picture element into smaller modulating elements, providing independent addressing for each element, setting the necessary angle for each element and then resolving them into the picture element. The invention also show one embodiment of the invention.
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Citations
5 Claims
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1. A method for full complex modulation of light comprising the following:
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a) dividing a picture element into a number of modulating elements; b) providing addressing circuitry for each of said modulating elements; c) selecting a net phase and amplitude of modulation; d) calculating angles to achieve said net phase and said amplitude of modulation; e) addressing said modulating elements to achieve said angles for independent control of said amplitude and net phase in the picture element response; and f) resolving said modulation elements as said picture element. - View Dependent Claims (2, 3)
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4. A spatial light modulator, comprising:
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a) a plurality of picture elements formed in a layered structure, each pixel being divided in half along a common horizontal axis, said layer structure further comprising; i) a substrate; ii) a reflecting layer divided into said plurality of said picture elements, said picture elements being suspended over a well; iii) electrodes in said well, such that one electrode corresponds to one half of each said picture element being divided in half; and b) electrical addressing circuitry such that each said half is independently addressable for full complex modulation. - View Dependent Claims (5)
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Specification