67 results about "Light delivery" patented technology

A fiber optic probe is provided with a distal sampling end, a proximal end, and light delivery and collection paths therethrough. The probe includes a window disposed at the distal sampling end of the fiber optic probe, the window having a distal end and a proximal end, the window having a light blocking material that reduces a surface area that receives light rays. A lens is disposed near the proximal end of the window, the lens having a distal end, a proximal end, and an aperture. A light delivery optical fiber is provided having a distal end and a proximal end, the light rays being directed through the aperture. A collection optical fiber is provided in optical communication with the lens and the window. The probe may include a lens collection filter disposed between the window and the lens.

A method for evaluating characteristics of a blood vessel and / or of blood flowing within the blood vessel comprises (a) delivering light at one or more wavelengths into the blood vessel using a light delivery portion of a catheter, (b) capturing reflected light at each wavelengths and generating a signal corresponding to light captured at each wavelength using a light capturing portion of the catheter, and (c) determining blood flow rate and / or blood flow velocity within the blood vessel from the signal generated in step (b) by the light capturing portion of the catheter. The method may also include the step of (d) determining a wall sheer stress level and / or fractional flow reserve ratio for the blood vessel from the blood flow rate and / or blood flow velocity determined in step (c).

The utility model relates to the technical field of core optical cable cross-connecting boxes, and discloses an indoor floor type core optical cable cross-connecting box, which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is arranged at the outer end of the main body mechanism, the main body mechanism comprises a machine body, a machine cover and a moisture-proof assembly, the machine cover is movably arranged at the outer end of the machine body, and the moisture-proof assembly is arranged in the machine body. The moisture-proof assembly is fixedly installed at the inner end of the machine body, the moisture-proof assembly comprises a limiting block, a transmission motor and a fan, the limiting block is fixedly installed at the lower end of the inner end of the machine body, and the transmission motor is fixedly installed at the upper end of the limiting block. According to the indoor floor type core optical cable cross connecting box, through installation of a main body mechanism, starting of a transmission motor at the upper end of a limiting block, driving of a fan to rotate, wind generation, starting of an electric heater, heating of an electric heating pipe through a temperature controller, wind passes through the electric heating pipe to form hot wind, and the hot wind is blown into a machine body through a ventilation net, so that the interior of the machine body becomes dry; the installation of the heat dissipation window facilitates the heat dissipation in the machine body, and the safety of the device is effectively improved.

To provide a UV light delivery device for performing intra-corporeal ultraviolet therapy.SOLUTION: The device includes an elongated body separating a proximal end and a distal end. The device also includes a UV light source configured to be received at the receiving space and a cooling tube. In some examples, the UV light source is configured to emit light with wavelengths with a desired intensity between 320 nm and 410 nm and is utilized in conjunction with an endotracheal tube or a nasopharyngeal airway.SELECTED DRAWING: Figure 69

Exemplary diagnostic systems and methods involve delivering multispectral light to a tissue of a patient, detecting light from the tissue, and analyzing the tissue based on the detected light. Light delivery can be achieved using a multi-dispersion element monochromator apparatus that includes a broad spectrum light source, a rotating body, and multiple dispersion elements in operative association with the rotating body.

A compact UV light delivery device comprises a UV LED, integrated into the compact UV light delivery device, to generate a UV beam; a homogenizing beam coupler, to receive the UV beam from the UV LED, and to homogenize the UV beam such that a measure of non-uniformity of the output homogenized beam is smaller than the measure of non-uniformity of the received UV beam; an illumination optics, to receive the homogenized beam and to forward it as an illumination beam; a spatial light modulator, to modulate the illumination beam into a modulated beam according to a procedure profile; a projection optics, to receive and to project the modulated beam as a projection beam through its objective into an eye of a patient; and a binocular-free imaging system, to image the eye of the patient via the same objective, and to present the image on a user interface.

A spectroscopy system comprising: a light delivery channel; a light receiving channel; and a reflective element; wherein the spectroscopy system is configurable in: a calibration arrangement in which light delivered from the light delivery channel is reflected from the reflective element and received in the light receiving channel; and a measurement arrangement in which light delivered from the light delivery channel travels through an object to be analysed and is received in the light receiving channel.

A temperature-tolerant, shock and vibration resistant absolute pressure sensor may be constructed by joining a ruggedized lens assembly and optical fiber assembly to create a stable beam of collimated light. The lens may be captured by brazing or welding to high-strength spherical metal components. The light delivery assembly may be comprised of a metal jacketed optical fiber, ceramic ferrule, and metal alignment sleeves that are mechanically and / or chemically joined to one another using high temperature sealing glass preforms or brazing materials. The optical fiber assembly may be joined to the lens assembly securing the end face of the optical fiber in the operative focal position relative to the lens. The joined assembly results in a structure where no parts are subject to movement even at extreme temperatures or when subjected to severe shock and vibration. All the air-to-glass interfaces may have anti-reflection coatings to reduce optical losses, back reflection, and false signals. This rugged collimated beam assembly may be joined to a sensor assembly comprised of a diaphragm and window which comprise a Fabry-Perot interferometer. The external wetted surfaces of the diaphragm may be coated to reflect the radiant energy or with passive conductive and convective arrangements to keep the sensor cool and to minimize the long-term change in sensitivity of the diaphragm due to oxidation. The resulting sensors can be further enhanced by attaching the sensor to an absolute, hermetically sealed connector comprised of a lens assembly which is aligned and welded to the sensor transducer body. The resulting sensors can be further enhanced with windows for collecting UV energy and may use wide spectral band optical fibers to multiplex UV, visible, and IR energy from the sensing environment. These enhancements can be used to detect the presence of a flame and to make temperature measurements resulting in safety-certified optical sensors for use in many harsh industrial applications.

Disclosed herein is an implantable or wearable, flexible, miniaturized microimaging suited for localized brain fluorescent imaging. The microimaging device is implemented on a Parylene photonics platform, which is biocompatible and fabricated using scalable planar microfabrication techniques, enabling customizable design, size, and number of channels (pixels). Operating across the entire visible spectrum. The microimaging device functions effectively both for coherent and scattered light. The microimaging device can be implanted into the brain of freely moving animals, where one or more waveguides could be dedicated to light delivery and the rest of the waveguides for collecting and relaying the fluorescent image to image the tissue structure and function.

An ophthalmic instrument (10) for crosslinking of the sclera (5) of an eye (1) is presented. The ophthalmic instrument (10) comprises a periocular arm (11) which extends from a proximal end (12) to a distal end (13) and which comprises a bend (14) to reach along at least part of an outer contour of the eye (1) with an inside face (15) of the periocular arm (11). An opening (16) is arranged through the inside face (15) at or near the distal end (13) of the periocular arm (11). A light delivery device (17) is arranged in the opening (16) of the periocular arm (11) to deliver light for local crosslinking of the sclera (5) of an eye (1) positioned adjacent to the inside face (15) of the periocular arm (11).

In one example, an apparatus includes a planar lens comprising a slab waveguide for guiding an optical mode, the slab waveguide having a first end where the optical mode is received as an input from a strip waveguide and a second end, a facet formed in the second end of the slab waveguide, and a reflector positioned at an exit of the facet and configured to redirect the optical mode to a point in free space when the optical mode exits the facet.

A photodynamic therapy light delivery system can comprise a light source and a light delivery catheter, including an expandable distal section, to be advanced to a treatment area in a closed state, and to be expanded to form a flow channel, and configured to have an outer compliant portion to compliantly press against the treatment area; wherein the space between the blood flow channel and outer portion of the catheter can be filled with a balloon, inflated with a fluid transparent or translucent at the treatment wavelengths; a shaft and a proximal section, together configured to advance the expandable distal section to the treatment area, and to receive the light from the light source at the proximal section and to forward the light to the expandable distal section; and side-emitting optical fibers, positioned in the expandable distal section, to receive the light and to illuminate the treatment area.

A method for evaluating characteristics of a blood vessel and / or of blood flowing within the blood vessel comprises (a) delivering light at one or more wavelengths into the blood vessel using a light delivery portion of a catheter, (b) capturing reflected light at each wavelengths and generating a signal corresponding to light captured at each wavelength using a light capturing portion of the catheter, and (c) determining blood flow rate and / or blood flow velocity within the blood vessel from the signal generated in step (b) by the light capturing portion of the catheter. The method may also include the step of (d) determining a wall sheer stress level and / or fractional flow reserve ratio for the blood vessel from the blood flow rate and / or blood flow velocity determined in step (c).

Methods and systems one or more for performing intra-luminal ultraviolet therapy for treating and / or ameliorating a gastrointestinal tract inflammation and / or infection are provided. In one example, a light delivery catheter may include a light emitting portion and non-illuminating portion, wherein the light emitting portion may include one or more UV transparent balloons. In some examples, the UV light source is configured to emit narrow-band light having wavelengths in a range between 335 nm and 349 nm.

Systems, devices and methods for controlled intramedullary delivery of light (frequencies from about 380 nm to about 500 nm) to treat tissue or bones disorders, including osteomyelitis, by a flexible fiber are provided, where the light is delivered in a circumferential fashion around the fiber, and where the energy delivered from the fiber is of a similar average intensity at the front end and back end of the fiber, and in between. The methods and systems deliver intramedullary light to the canal over long lengths via a minimally invasive pathway to a bone. The methods and systems deliver and maintain a light delivery system within the canal of the bone to provide single or multiple doses of light to kill, eliminate, remove or reduce bacteria, viruses, fungus and pathogens, without removal of the light fiber system, thereby providing single or multiple treatments.

A compact UV light delivery device comprises a UV LED, integrated into the compact UV light delivery device, to generate a UV beam; a homogenizing beam coupler, to receive the UV beam from the UV LED, and to homogenize the UV beam such that a measure of non-uniformity of the output homogenized beam is smaller than the measure of non-uniformity of the received UV beam; an illumination optics, to receive the homogenized beam and to forward it as an illumination beam; a spatial light modulator, to modulate the illumination beam into a modulated beam according to a procedure profile; a projection optics, to receive and to project the modulated beam as a projection beam through its objective into an eye of a patient; and a binocular-free imaging system, to image the eye of the patient via the same objective, and to present the image on a user interface.

System, devices, and methods for providing treatment to tissue are disclosed herein. In some embodiments, a device is provided that includes a delivery catheter having an elongated shaft and an inner lumen therethrough, the delivery catheter being configured to pass through tissue such that a distal end of the delivery catheter is positioned at a target tissue, a support in the form of an inner slidable tube that is configured to be positioned inside the inner lumen of the delivery catheter, the support being configured to provide rigid or semi-rigid support for the delivery catheter during insertion of the delivery catheter through tissue, and one or more optical fibers configured to pass through the inner slidable tube and being configured to deliver light energy to provide an antimicrobial effect to the target tissue.

A phototherapy device is provided for delivering targeted phototherapy to an oral cavity. The phototherapy device includes a main body configured to be received within the oral cavity, a light source for emitting light, and an air gap located between the light source and a shell for improved light delivery to the pharyngeal tissues of the oral cavity.

System, devices, and methods for providing treatment to tissue are disclosed herein. In some embodiments, a device is provided that includes a delivery catheter having an elongated shaft and an inner lumen therethrough, the delivery catheter being configured to pass through tissue such that a distal end of the delivery catheter is positioned at a target tissue, a support in the form of an inner slidable tube that is configured to be positioned inside the inner lumen of the delivery catheter, the support being configured to provide rigid or semi-rigid support for the delivery catheter during insertion of the delivery catheter through tissue, and one or more optical fibers configured to pass through the inner slidable tube and being configured to deliver light energy to provide an antimicrobial effect to the target tissue.

Systems, devices and methods for controlled intramedullary delivery of light (frequencies from about 380 nm to about 500 nm) to treat tissue or bones disorders, including osteomyelitis, by a flexible fiber are provided, where the light is delivered in a circumferential fashion around the fiber, and where the energy delivered from the fiber is of a similar average intensity at the front end and back end of the fiber, and in between. The methods and systems deliver intramedullary light to the canal over long lengths via a minimally invasive pathway to a bone. The methods and systems deliver and maintain a light delivery system within the canal of the bone to provide single or multiple doses of light to kill, eliminate, remove or reduce bacteria, viruses, fungus and pathogens, without removal of the light fiber system, thereby providing single or multiple treatments.

Described are recording heads for heat assisted magnetic recording that include a light delivery waveguide that delivers light for excitation of a near-field transducer, where the waveguide has a multilayer core. The multilayer core includes a top outer layer nearest to the near-field transducer that has a lower refractive index than an inner layer of multilayer core. The described waveguides having a multilayer core can improve NFT coupling efficiency, which in turn can allow the use of lower optical power density, and thus provide better reliability for recording head components such as the near-field transducer.

The invention relates to a water-light power pack complementary scheduling method and system for coupling electricity abandoning loss, and the method comprises the steps: obtaining a preset water-light delivery capacity threshold value and a water-electricity daily average output set, and obtaining a water-electricity output process set according to a water-electricity typical intraday output process and the water-electricity daily average output set; obtaining a water-light output process set according to the photovoltaic typical intra-day output process and the water-power output process set, and updating the water-power output process set according to the threshold value and the water-light output process set; determining a photovoltaic power abandoning process set according to the updated water-light output process set and a threshold value, and fitting according to the photovoltaic power abandoning process set and the water-light output process set to obtain a photovoltaic power abandoning loss function; constructing a water-light complementary scheduling model according to the photovoltaic output, the hydropower output, the actual photovoltaic output, the output time, the photovoltaic electricity price, the hydropower electricity price and the photovoltaic electricity abandoning loss function; and solving the water-light complementary scheduling model according to a preset constraint condition to obtain photovoltaic output and hydropower output.

A UV light delivery device for performing intra-corporeal ultraviolet therapy is provided. The device includes an elongated body separating a proximal end and a distal end. The device also includes a UV light source configured to be received at the receiving space and a cooling tube. In some examples, the UV light source is configured to emit light with wavelengths with a desired intensity between 320 nm and 410 nm and is utilized in conjunction with an endotracheal tube or a nasopharyngeal airway.

A handheld imaging system comprises a light delivery member optically coupled with a light source for delivering light emitted from the light source to tissue of a target region to illuminate the tissue; and an imaging member for detector for collecting the images of optical signals emitted from the tissue responsive to the light illumination. The light delivery member and the imaging member are incorporated into a handpiece.

A compact UV light delivery device comprises a UV LED, integrated into the compact UV light delivery device, to generate a UV beam; a homogenizing beam coupler, to receive the UV beam from the UV LED, and to homogenize the UV beam such that a measure of non-uniformity of the output homogenized beam is smaller than the measure of non-uniformity of the received UV beam; an illumination optics, to receive the homogenized beam and to forward it as an illumination beam; a spatial light modulator, to modulate the illumination beam into a modulated beam according to a procedure profile; a projection optics, to receive and to project the modulated beam as a projection beam through its objective into an eye of a patient; and a binocular-free imaging system, to image the eye of the patient via the same objective, and to present the image on a user interface.