James T Zheng

US Patent:

20210251478, Aug 19, 2021

Filed:

Jan 29, 2021

Appl. No.:

17/162181

Inventors:

- San Jose CA, US
Changming Gu - Qingdao, CN
Mingzhi Li - Qingdao, CN
James Zheng - Fremont CA, US
Anmin Zheng - Fremont CA, US
Daniel Cifelli - Fremont CA, US

International Classification:

A61B 1/12
A61B 1/05
A61B 1/00
A61B 1/06
A61B 1/018

Abstract:

A device for maintaining an optical path of an optical imaging system free of fog includes an elongated member having a distal end and a proximal end, a near-infrared (NIR) light-absorbing optical window disposed at the distal end, and an optical system disposed along the optical path. The device also includes a coupling module coupled to the elongated member at the proximal end and configured to transmit near-infrared light to the NIR light-absorbing optical window along the optical path and receive a light beam from an area of interest along the optical path.