Techniques Utilizing Diffractive Masks Having Structures with a Period Limited Randomness
In many high resolving optical systems, resolution is limited not by the optics but by the sensor’s nonzero pixel size. As a result, overall resolution is decreased. Here, a novel approach for enhancing resolution beyond the limit set by the sensor’s pixels is proposed. This method does not involve additional mechanical elements, such as those used for microscan. In this scheme, neither the sensor nor additional elements are moved. The geometrical super resolving procedure is based on code division multiplexing access (CDMA) approach with all of its inherent benefits, such as relative noise immunity to single tone interference. A setup is proposed for coherent and incoherent illumination, with slight modifications for the latter. A theoretical analysis of the setup is presented and later compared with empirical results.
KeywordsAutocorrelation Convolution Ghost Aliasing
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