Patent · US Active

Optical system and method for multi-range and dual-range imaging

US7812295B2 · kind B2 · utility

19Cited by
4References
62Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 4, 2008
Grant dateOct 12, 2010
Priority date—
Expiry dateDec 4, 2028

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02C2202/22
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

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%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.