TY - PAT
T1 - Optical system and method for multi-range and dual-range imaging
AU - Zalevsky, Z.
AU - Raveh, Ido
PY - 2008
Y1 - 2008
N2 - 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%.
AB - 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%.
UR - https://patents.google.com/patent/US7812295B2/en
M3 - Patent
M1 - US patent No. 7812295
PB - Washington, DC: U.S. Patent and Trademark Office
ER -