US 12,345,862 B2
Wide field of view imaging systems and methods
David Ovrutsky, Charlotte, NC (US)
Assigned to Teledyne FLIR Commercial Systems, Inc., Goleta, CA (US)
Filed by Teledyne FLIR Commercial Systems, Inc., Goleta, CA (US)
Filed on Oct. 29, 2021, as Appl. No. 17/515,339.
Prior Publication US 2023/0140342 A1, May 4, 2023
Int. Cl. G02B 13/00 (2006.01); G06T 7/80 (2017.01); H04N 17/00 (2006.01); H04N 23/51 (2023.01); H04N 23/55 (2023.01); H04N 23/698 (2023.01)
CPC G02B 13/0085 (2013.01) [G02B 13/003 (2013.01); G02B 13/008 (2013.01); G06T 7/80 (2017.01); H04N 17/002 (2013.01); H04N 23/51 (2023.01); H04N 23/55 (2023.01); H04N 23/698 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An imaging device comprising:
a lens system comprising:
a first lens comprises a first spherical surface and a second spherical surface opposite the first spherical surface, wherein the first lens is configured to transmit electromagnetic radiation associated with a scene, wherein the first lens is associated with a first field of view;
a second lens comprises a first wafer level optics (WLO) aspherical lens element, wherein the second lens is configured to receive the electromagnetic radiation from the first lens and transmit the electromagnetic radiation, and wherein the second lens is spaced apart from the first lens by a first lens-free gap; and
a third lens comprises a second WLO aspherical lens element, wherein the third lens is configured to receive the electromagnetic radiation from the second lens and transmit the electromagnetic radiation, wherein the third lens is spaced apart from the second lens by a second lens-free gap, and wherein the second lens and the third lens are collectively associated with a second field of view narrower than the first field of view;
a window configured to receive the electromagnetic radiation from the third lens and transmit the electromagnetic radiation, wherein the window is spaced apart from the third lens by a third lens-free gap; and
a detector array comprising a plurality of detectors, wherein the detector array is spaced apart from the window by a fourth lens-free gap, and wherein each of the plurality of detectors is configured to receive a portion of the electromagnetic radiation from the lens system and generate a thermal image based on the received portion of the electromagnetic radiation.