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Large-Area Diffusers Using Modulated Phase Reflection Gratings

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Concatenating individual diffusers to form larger ones narrow their diffusion pattern into specific directions. A solution is proposed using modulation of existing diffusion structures with other sequences to achieve the desired diffusion pattern. The technique results in large-area diffusion structures that do not suffer from having narrowed diffusion patterns but can be implemented easily using existing diffusers.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=7812

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