US 12,000,776 B2
Window obscuration sensors for mobile gas and chemical imaging cameras
Ryan Mallery, Houston, TX (US); Ohad Israel Balila, Friendswood, TX (US); and Robert Timothy Kester, Friendswood, TX (US)
Assigned to REBELLION PHOTONICS, INC., Houston, TX (US)
Filed by REBELLION PHOTONICS, INC., Houston, TX (US)
Filed on Mar. 7, 2023, as Appl. No. 18/179,879.
Application 18/179,879 is a continuation of application No. 17/654,320, filed on Mar. 10, 2022, granted, now 11,624,705.
Application 17/654,320 is a continuation of application No. 16/949,254, filed on Oct. 22, 2020, granted, now 11,313,791, issued on Apr. 26, 2022.
Application 16/949,254 is a continuation of application No. 16/664,615, filed on Oct. 25, 2019, granted, now 10,845,302, issued on Nov. 24, 2020.
Application 16/664,615 is a continuation of application No. 16/185,399, filed on Nov. 9, 2018, granted, now 10,605,725, issued on Mar. 31, 2020.
Claims priority of provisional application 62/584,684, filed on Nov. 10, 2017.
Claims priority of provisional application 62/584,076, filed on Nov. 9, 2017.
Prior Publication US 2023/0243743 A1, Aug. 3, 2023
Int. Cl. G01N 21/3504 (2014.01); G01J 5/0806 (2022.01); G01N 21/31 (2006.01); H04N 5/33 (2023.01)
CPC G01N 21/3504 (2013.01) [G01J 5/0806 (2013.01); G01N 21/314 (2013.01); H04N 5/33 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An infrared (IR) imaging system comprising:
a housing;
an optical window disposed on the housing;
an optical detector system disposed within the housing; and
a plurality of spatially and spectrally distinct optical channels that transfer incident IR radiation from the optical window to the optical detector system, wherein a first optical channel is in focus at the optical window to detect an obscuration of the optical window that may degrade operation of the IR imaging system.