发明授权
US07812295B2 Optical system and method for multi-range and dual-range imaging 有权
用于多范围和双范围成像的光学系统和方法

Optical system and method for multi-range and dual-range imaging
摘要:
An imaging system is presented for use in multi-range imaging of an object scene by incoherent light. The imaging system comprises aligned a phase mask section, a single focus lens section, and a pixel detector array (PDA). The phase mask section has a generally non-diffractive, narrowly bounded, phase variation corresponding to a profile of a through-object Modulated Transfer Function (MTF) of the imaging system, where the profile has, at an at least one non-zero spatial frequency, at least two regions of growth leading to the MTF higher than 10%.
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