Abstract: A device for maintaining an optical imaging system free of fog includes an elongated member having a distal end and a proximal end, an interface section disposed between the distal end and the proximal end, an optical window disposed at the distal end, and an optical system disposed along an optical axis. The system includes an adapter module coupled to the elongated member at the proximal end and having an optical window disposed along the optical axis and positioned on a first side of the adapter module and a coupler window disposed along the optical axis and positioned on a second side of the adapter module. The system includes a coupling module coupled to the adapter module proximate the second side. The coupling module includes a NIR light source operable to provide NIR light.

Abstract: A method of operating a fog-free optical imaging system having an elongated member comprising a distal end and a proximal end, a near-infrared (NIR) light-absorbing optical window disposed at the distal end, and an optical system along an optical path. The method includes coupling a coupling module to the elongated member at the proximal end, wherein the coupling module comprises a light source emitting NIR light. The method also includes activating the light source to transmit the NIR light to the NIR light-absorbing optical window along the optical path for an illumination time period. The method also includes receiving a visible light beam reflected from an area of interest along the optical path.

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.

Abstract: An apparatus for sterilizing a target includes an ultraviolet (UV) light source for emitting UV radiation for sterilizing the target, a measurement device for measuring a distance between the UV light source and the target, a controller for calculating a time duration for sterilizing the target in response to the measured distance, an attachment member for removably attaching an electronic device to the apparatus, and an interface circuit for electrically connecting the electronic device with the apparatus. The electronic device includes a processor configured to execute an application program and a display screen configured to display a result of the application program.

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.