Abstract: Systems and methods are described that relate to an optical system including an image sensor optically-coupled to at least one nanophotonic element. The image sensor may include a plurality of superpixels. Each respective superpixel of the plurality of superpixels may include at least a respective first pixel and a respective second pixel. The at least one nanophotonic element may have an optical phase transfer function and may include a two-dimensional arrangement of sub-wavelength regions of a first material interspersed within a second material, the first material having a first index of refraction and the second material having a second index of refraction. The nanophotonic element is configured to direct light toward individual superpixels in the plurality of superpixels, and to direct light toward the first or second pixel in each individual superpixel based on a wavelength dependence or a polarization dependence of the optical phase transfer function.

Abstract: Aspects of the present disclosure are directed to providing and/or controlling electromagnetic radiation. As may be implemented in accordance with one or more embodiments, an apparatus includes a first structure that contains an object, and a second structure that is transparent at solar wavelengths and emissive in the atmospheric electromagnetic radiation transparency window. The second structure operates with the first structure to pass light into the first structure for illuminating the object, and to radiatively cool the object while preserving the object's color.

Abstract: A surgical imaging system includes a light source configured to illuminate a portion of a surgical environment and a light sensor configured to receive light from the illuminated portion in response to the illumination. The surgical imaging system determines spectrographic content of the received light and uses the determined spectrographic content to identify the illuminated portion of the surgical environment; for example, to determine that the portion contains a surgical instrument, a foreign body, a suture, a particular type of tissue, a blood vessel, and/or a fluorescent marker. This identification of the illuminated portion of the surgical environment could be used to implement a surgical intervention. For example, a surgical laser could be operated, based on such generated identification information, to ablate cancerous tissue in the surgical environment that is marked with a fluorophore while avoiding ablating any sutures or surgical instruments disposed in the surgical environment.

Abstract: A system for medical diagnosis includes a fiber optic cable and a plurality of light emitters optically coupled to a first end of the fiber optic cable. Each light emitter in the plurality of light emitters emits a distinct bandwidth of light. The system also includes a controller electrically coupled to the plurality of light emitters. The controller includes logic that when executed by the controller causes the controller to perform operations including: receiving instructions including an illumination mode, and adjusting an intensity of the light emitted from each light emitter in the plurality of light emitters to match the illumination mode.

Abstract: An apparatus, system and process for utilizing dual complementary pattern illumination of a scene when performing depth reconstruction of the scene are described. The method may include projecting a first reference image and a complementary second reference image on a scene, and capturing first image data and second image data including the first reference image and the complementary second reference image on the scene. The method may also include identifying features of the first reference image from features of the complementary second reference image. Furthermore, the method may include performing three dimensional (3D) scene reconstruction for image data captured by the imaging device based on the identified features in the first reference image.

Abstract: A robotic surgical system includes a surgical instrument configured to cut biological tissues and an imaging system configured to image the biological tissues. Based on one or more images of the biological tissue generated by the imager, the robotic surgical system operates the surgical instrument to cut the biological tissue according to a desired dissection of the tissue. The robotic surgical system operates the surgical instrument to partially or wholly automatically perform one or more cuts into the biological tissue to achieve the desired dissection.

Abstract: The present disclosure relates to systems and devices configured to determine the distance to objects within a field of view. Namely, at least a portion of the field of view may be illuminated with a coherent light source. Due to interactions between the laser light, the transmission medium, and the object, characteristic laser speckle patterns may be formed. These characteristic laser speckle patterns may be imaged with a camera. Using statistical image analysis, an estimated distance to the objects within the field of view may be obtained. For example, the image frame may be partitioned into a plurality of image segments. An autocorrelation for each image segment of the plurality of image segments may be obtained. A depth map may be obtained based on the autocorrelations.

Abstract: Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.

Abstract: An imaging system (e.g., hyperspectral imaging system) receives an indication to compare a first object and a second object (e.g., two anatomical structures or organs in a medical environment). The imaging system accesses a classification vector for the first object and the second object, the classification vector having been extracted by separating a plurality of collected reflectance values for the first object from a plurality of collected reflectance values for the second object. A set of optimal illumination intensities for one or more spectral illumination sources of the imaging system is determined based on the extracted classification vector. The first and second objects are illuminated with the determined illumination intensities. A high-contrast image of the first and second objects is provided for display, such that the two objects can be readily distinguished in the image. The intensity of pixels in the image is determined by the illumination intensities.

Abstract: A system that includes a polymer adhesive containing metallic or other nanoparticles that resonate upon the application of electromagnetic radiation to product heat. Heat generated by particle resonance is used to cure the polymer adhesive. Applications include wound repair, and industrial, commercial and craft applications.

Abstract: Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.

Abstract: A system for providing networked communications includes a plurality of head-mountable devices, each in communication with a control system via a communication network. Each of the plurality of head-mountable devices includes a display, and may also include an image-capture device and/or a microphone. The control system receives, via the communication network, surgical data of a patient obtained from at least one source of surgical data. Wearers of the head-mountable devices may select aspects of the surgical data and the control system causes those selected aspects to be displayed on the respective wearable device. The control system may also generate alerts and cause the alerts to be displayed on the wearable devices. An alert may include a notification that additional surgical data is available for access by the wearer of the head-mountable device.

Abstract: A system for providing networked communications includes a plurality of head-mountable devices, each in communication with a control system via a communication network. Each of the plurality of head-mountable devices includes a display, and may also include an image-capture device and/or a microphone. The control system receives, via the communication network, surgical data of a patient obtained from at least one source of surgical data. Wearers of the head-mountable devices may select aspects of the surgical data and the control system causes those selected aspects to be displayed on the respective wearable device. The control system may also generate alerts and cause the alerts to be displayed on the wearable devices. An alert may include a notification that additional surgical data is available for access by the wearer of the head-mountable device.

Abstract: Systems and methods are described that relate to an optical system including an image sensor optically-coupled to at least one nanophotonic element. The image sensor may include a plurality of superpixels. Each respective superpixel of the plurality of superpixels may include at least a respective first pixel and a respective second pixel. The at least one nanophotonic element may have an optical phase transfer function and may include a two-dimensional arrangement of sub-wavelength regions of a first material interspersed within a second material, the first material having a first index of refraction and the second material having a second index of refraction. The nanophotonic element is configured to direct light toward individual superpixels in the plurality of superpixels, and to direct light toward the first or second pixel in each individual superpixel based on a wavelength dependence or a polarization dependence of the optical phase transfer function.

Abstract: A surgical imaging system includes a light source configured to illuminate a portion of a surgical environment and a light sensor configured to receive light from the illuminated portion in response to the illumination. The surgical imaging system determines spectrographic content of the received light and uses the determined spectrographic content to identify the illuminated portion of the surgical environment; for example, to determine that the portion contains a surgical instrument, a foreign body, a suture, a particular type of tissue, a blood vessel, and/or a fluorescent marker. This identification of the illuminated portion of the surgical environment could be used to implement a surgical intervention. For example, a surgical laser could be operated, based on such generated identification information, to ablate cancerous tissue in the surgical environment that is marked with a fluorophore while avoiding ablating any sutures or surgical instruments disposed in the surgical environment.

Abstract: Aspects of the present disclosure are directed to providing and/or controlling electromagnetic radiation. As may be implemented in accordance with one or more embodiments, an apparatus includes a first structure that contains an object, and a second structure that is transparent at solar wavelengths and emissive in the atmospheric electromagnetic radiation transparency window. The second structure operates with the first structure to pass light into the first structure for illuminating the object, and to radiatively cool the object while preserving the object's color.

Abstract: In an embodiment, an apparatus and method are described for ablating tissue in response to determining a fluorescence condition. An excitation light source may produce excitation light at a excitation wavelength of a fluorophore. A beam scanner may direct the excitation light towards a tissue location. A fluorophore may produce emission light in response to absorbing the excitation light. A camera may capture an image of the tissue location. In response to the image indicating emission light at the tissue location, an ablation light source may produce ablation light. The beam scanner may direct the ablation light towards the tissue location. Additionally or alternatively, a topography map may be generated and certain aspects of the apparatus and/or the method may be adjusted based on the topography map.

Abstract: Various aspects as described herein are directed to a radiative cooling apparatuses and methods for cooling an object. As consistent with one or more embodiments, a radiative cooling apparatus includes an arrangement of a plurality of different material located at different depths along a depth dimension relative to the object. The plurality of different material includes a solar spectrum reflecting portion configured and arranged to suppress light modes, thereby inhibiting coupling of the incoming electromagnetic radiation, of at least some wavelengths in the solar spectrum, to the object at a range of angles of incidence relative to the depth dimension. Further, the plurality of material includes a thermally-emissive arrangement configured and arranged to facilitate, simultaneously with the inhibiting coupling of the incoming electromagnetic radiation, the thermally-generated electromagnetic emissions from the object at the range of angles of incidence and in mid-IR wavelengths.

Abstract: Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.