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Publikováno v:
Diffractive Optics and Micro-Optics.
Refractive microlens arrays can be made through reactive ion etching of melted photoresist microlenses. We report fabrication of fused silica microlens arrays with reduced aberration by controlling the relative etch rates of silica and photoresist. A
Autor:
Keith Mersereau, George Michael Morris
Publikováno v:
Applied Optics. 25:2338
A circular harmonic filter illuminated with white light illumination is used to achieve scale, rotation, and shift invariant image recognition. The circular harmonic expansion of an object is utilized to achieve rotation and shift invariant image rec