Abstract: A laparoscopic image smoke removal method based on a generative adversarial network, and belongs to the technical field of computer vision. The method includes: processing a laparoscopic image sample to be processed using a smoke mask segmentation network to acquire a smoke mask image; inputting the laparoscopic image sample to be processed and the smoke mask image into a smoke removal network, and extracting features of the laparoscopic image sample to be processed using a multi-level smoke feature extractor to acquire a light smoke feature vector and a heavy smoke feature vector; and acquiring, according to the light smoke feature vector, the heavy smoke feature vector and the smoke mask image, a smoke-free laparoscopic image by filtering out smoke information and maintaining a laparoscopic image by using a mask shielding effect. The method has the technical effects of robustness and ability of being embedded into a laparoscopic device for use.

Abstract: A laparoscopic image smoke removal method based on a generative adversarial network, and belongs to the technical field of computer vision. The method includes: processing a laparoscopic image sample to be processed using a smoke mask segmentation network to acquire a smoke mask image; inputting the laparoscopic image sample to be processed and the smoke mask image into a smoke removal network, and extracting features of the laparoscopic image sample to be processed using a multi-level smoke feature extractor to acquire a light smoke feature vector and a heavy smoke feature vector; and acquiring, according to the light smoke feature vector, the heavy smoke feature vector and the smoke mask image, a smoke-free laparoscopic image by filtering out smoke information and maintaining a laparoscopic image by using a mask shielding effect. The method has the technical effects of robustness and ability of being embedded into a laparoscopic device for use.

Abstract: This disclosure relates to the minimally invasive medical technical field, and specifically, to a device of anti-fogging endoscope system including a beam of a near-infrared light for anti-fogging, which is coupled into an endoscope imaging optical channel in combination coaxially and is transmitted to the front optical window sheet, the visible light passes through the front optical window sheet, and the near-infrared light is absorbed by the absorption characteristics of the front optical window sheet to raise the temperature of the front optical window sheet. The device is also provided with a cut filter for eliminating the impact on image quality caused by the near-infrared stray light, so that the illumination light source of the prior-art endoscope is not necessary to be changed. It is suitable to integrate the coaxial coupling module with a camera handle or adapter and is more convenient to operate the device.

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: This disclosure relates to the minimally invasive medical technical field, and specifically, to a device of anti-fogging endoscope system including a beam of a near-infrared light for anti-fogging, which is coupled into an endoscope imaging optical channel in combination coaxially and is transmitted to the front optical window sheet, the visible light passes through the front optical window sheet, and the near-infrared light is absorbed by the absorption characteristics of the front optical window sheet to raise the temperature of the front optical window sheet. The device is also provided with a cut filter for eliminating the impact on image quality caused by the near-infrared stray light, so that the illumination light source of the prior-art endoscope is not necessary to be changed. It is suitable to integrate the coaxial coupling module with a camera handle or adapter and is more convenient to operate the device.

Abstract: This invention relates to a main optical system for an endoscope, in particular, to a main optical system for an endoscope that is focally imaging in the visible and near-infrared lights, which belongs to the technical field of minimally invasive surgery. The used approach is: the objective lens set has a positive off-focus and positive field curvature. The steering set has the negative off-focus and negative field curvature. Moreover, a field lens set is added between the objective lens set and the steering set. The field lens set is located near the focus of the objective lens set. After the field lens is combined with the objective lens set, it will have the positive off-focus and positive field curvature that match to the steering set so that the 850 m defocus amount is less than 0.05 mm and the edge field curvature is less than 0.1 mm in the main endoscope optical system. The system is good in imaging.

Abstract: This invention relates to a main optical system for an endoscope, in particular, to a main optical system for an endoscope that is focally imaging in the visible and near-infrared lights, which belongs to the technical field of minimally invasive surgery. The used approach is: the objective lens set has a positive off-focus and positive field curvature. The steering set has the negative off-focus and negative field curvature. Moreover, a field lens set is added between the objective lens set and the steering set. The field lens set is located near the focus of the objective lens set. After the field lens is combined with the objective lens set, it will have the positive off-focus and positive field curvature that match to the steering set so that the 850 m defocus amount is less than 0.05 mm and the edge field curvature is less than 0.1 mm in the main endoscope optical system. The system is good in imaging.

Abstract: The invention relates to a device of anti-fogging endoscope system and its method, falling in the minimally invasive medical technical field, wherein a near-infrared lighting source for anti-fogging is added on the basis of the traditional endoscope system, a beam of which is coupled into the lighting transmission path in color combination, and changes material properties of a distal optical window plate to transmit the visible light, ensuring that surgical filed is lighted by white light, while the temperature of the distal optical window plate is elevated by absorbing energy of the near-infrared light to reduce the temperature difference between the distal optical window plate of endoscope and a human body, to realize the purpose of anti-fogging.

Abstract: System and method for LED light source. According to an embodiment, the present invention provides a an LED light system for emitting substantially white light. The system includes a first dichroic element, the first dichroic element comprises a first dichroic surface having a first coating, the first coating being adapted to reflect over 95% of a first color and transmit over 95% of a second color, the first dichroic surface having a first side and a second side. The system also includes a second dichroic element, the second dichroic element comprises a second dichroic surface having a second coating, the second coating being adapted to reflect over 95% of a third color and transmit 95% of a fourth color, the second dichroic surface having a third side and a fourth side.

Abstract: System and method for LED light source. According to an embodiment, the present invention provides a an LED light system for emitting substantially white light. The system includes a first dichroic element, the first dichroic element comprises a first dichroic surface having a first coating, the first coating being adapted to reflect over 95% of a first color and transmit over 95% of a second color, the first dichroic surface having a first side and a second side. The system also includes a second dichroic element, the second dichroic element comprises a second dichroic surface having a second coating, the second coating being adapted to reflect over 95% of a third color and transmit 95% of a fourth color, the second dichroic surface having a third side and a fourth side.