US 12,274,421 B2
Device for anti-fog endoscope system
Rongzhuang Mao, Shandong (CN); Changming Gu, Shandong (CN); Mingzhi Li, Shandong (CN); James Zheng, Fremont, CA (US); Anmin Zheng, Fremont, CA (US); and Daniel Cifelli, Fremont, CA (US)
Assigned to Novelbeam Technology Inc., San Jose, CA (US)
Filed by Novelbeam Technology Inc., San Jose, CA (US)
Filed on Jan. 29, 2021, as Appl. No. 17/162,181.
Claims priority of application No. 202010095217.0 (CN), filed on Feb. 17, 2020.
Prior Publication US 2021/0251478 A1, Aug. 19, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 1/06 (2006.01); A61B 1/00 (2006.01); A61B 1/018 (2006.01); A61B 1/04 (2006.01); A61B 1/05 (2006.01); A61B 1/12 (2006.01); G02B 5/20 (2006.01); G02B 13/14 (2006.01); G02B 27/00 (2006.01); G02B 27/14 (2006.01); G02B 27/30 (2006.01)
CPC A61B 1/0646 (2013.01) [A61B 1/00078 (2013.01); A61B 1/00096 (2013.01); A61B 1/00121 (2013.01); A61B 1/00126 (2013.01); A61B 1/00163 (2013.01); A61B 1/00186 (2013.01); A61B 1/00188 (2013.01); A61B 1/018 (2013.01); A61B 1/04 (2013.01); A61B 1/05 (2013.01); A61B 1/0638 (2013.01); A61B 1/0661 (2013.01); A61B 1/0684 (2013.01); A61B 1/127 (2013.01); G02B 5/208 (2013.01); G02B 13/14 (2013.01); G02B 27/0006 (2013.01); G02B 27/141 (2013.01); G02B 27/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for maintaining an optical path of an optical imaging system free of fog, the device comprising:
an elongated member disposed along an optical axis and comprising:
a distal end and a proximal end;
an interface section disposed between the distal end and the proximal end;
a near-infrared (NIR) light-absorbing optical window disposed at the distal end; and
an optical system disposed along the optical axis, wherein the optical system comprises at least one optical lens element positioned along the optical axis; and
a light source coupled to the interface section, wherein the light source is configured to transmit light toward an area of interest through a plurality of optical fibers disposed circumferentially around the elongated member; and
a coupling module coupled to the elongated member at the proximal end, wherein the coupling module includes a NIR light source operable to provide NIR light and is configured to:
transmit the NIR light to the NIR light-absorbing optical window through the proximal end and the at least one optical lens element positioned along the optical axis; and
receive a light beam from the area of interest along the optical axis.