184 results about "Light delivery" patented technology

A magnetic head comprising a waveguide coupler for coupling incident electromagnetic (EM) radiation into a waveguide is disclosed. The waveguide coupler includes a bottom clad layer and a waveguide core layer formed above the bottom clad layer. An interface between the bottom clad layer and the waveguide core layer includes a first grating having a first period and a first etch depth, which are configured to couple a first portion of the incident EM radiation into the waveguide core layer. The waveguide coupler can further comprise a top clad layer formed above the waveguide core layer. An interface between the waveguide core layer and the top clad layer includes a second grating having a second period and a second etch depth. The second period and the second etch depth are configured to couple a second portion of the incident EM radiation into the waveguide core layer.

An apparatus and method are described that uses fractional light based treatment to shrink soft tissue in the mouth or throat to reduce obstruction of the airways for patients suffering from obstructive sleep apnea. A light delivery probe with scanning optics can be used to deliver treatment. Cooling systems can be added to reduce damage to epithelial layers of tissue. Light based treatment can be nonablative or ablative and is preferably performed with a laser.

A system for disinfecting an intravenous catheter and/or other fluidic tubing includes attaching a device around the catheter and delivering a high dose of ultraviolet or other type of radiation to the catheter connection point and adjacent tubing. The device may include a UV radiation source connected to a catheter attachment assembly via fiber optic cable, allowing transmission of UV radiation from the source to an internal reflector unit. The UV source may be built into the catheter connection assembly. The device may be a handheld device that fits over a catheter connection point, with single or multiple integrated UV sources to deliver 360 degree radiation around the catheter, with mirrors to increase light delivery. The method involves controlled exterior irradiation of a catheter connection point to disinfect the lumen via transmitted light through the catheter wall. Commercially available catheters or those specially designed for passage of radiation may be used.

A portable light delivery device for delivering light to the blood supply of a human body through a nonocular area of skin on the body includes an attachment member, a portable light delivery unit connected to the attachment member and a portable power supply. The portable light delivery unit provides one or more wavelengths of light within a specifically determined range of intensity and a specifically determined angle of illumination. A portable control unit may be included on the light delivery device for selectively controlling the light delivery unit. A programming device associated with the control unit selectively changes the programming of the controller. The light delivery device is portably secured to a region of the body having a substantial amount of blood vessels near the surface thereof to deliver light to the blood supply of the body for treating mood disorders, seasonal affective disorder and disorders involving circadian rhythm and sleep.

A metallic wave guide and a light delivery module are provided. The metallic waveguide includes a metal body formed of a conductive metal and having an aperture formed therethrough, the aperture having input and output ends. The aperture has a bent portion for changing a light traveling direction between the input and output ends, and a tapered portion between the bent portion and the output end. The tapered portion has a width that is gradually reduced toward the output end, and the aperture is formed in a C-shape by a ridge formed on an inner surface of the metal body.

It has been discovered that emissive display devices can be used to provide display functionality in dynamic autostereoscopic displays. One or more emissive display devices are coupled to one or more appropriate computing devices. These computing devices control delivery of autostereoscopic image data to the emissive display devices. A lens array coupled to the emissive display devices, e.g., directly or through some light delivery device, provides appropriate conditioning of the autostereoscopic image data so that users can view dynamic autostereoscopic images.

An optical assembly including a light management component and a light delivery component is disclosed. The light management component and the light delivery component are attached together in a manner that defines voids between the light management component and the light delivery component.

A light delivery module, a method of fabricating the same, a heat-assisted magnetic recording head using the light delivery module are provided. The light delivery module delivers light emitted from a light source. The light delivery module includes an optical waveguide having an inclined plane of an angle Φ with respect to an incident light axis to deliver an incident light, and a nano aperture changing an energy distribution of the light delivered through the inclined plane to generate an enhanced near-field. The heat-assisted magnetic recording head is mounted on one end of a slider with an air bearing surface to perform a recording operation on a recording medium. The heat-assisted magnetic recording head includes a magnetic path forming unit forming a magnetic field for recording, a light source emitting light for heating a predetermined region of a recording surface of the recording medium, and the light delivery module.

A light delivery module having a structure in which components can be precisely aligned and be integrated as a single unit, and a heat-assisted magnetic recording (HAMR) head employing the light delivery module. The light delivery module includes: a base having a first groove; a light source mounted on the base; an optical device that is installed on the base and guides light radiated from the light source; a cover member that is bonded to the base to protect the light source and the optical device and has a second groove facing the first groove; and a nano aperture bonded in the first and second grooves to form an enhanced near-field by adjusting the distribution of the light transmitted through the optical device.

Lighted refrigerated display case with remote light source comprises a closed container with an interior of the container refrigerated to a temperature below 7 C. The container is thermally insulated from ambient, having internal and external walls. A solid fiber optic luminaire is at least partially mounted within the container, having an elongated side-light emitting portion for emitting light from the side of the luminaire onto contents in an interior of the display case. The side-light emitting portion comprises an extractor of light arranged to preferentially extract light from the luminaire and direct the light in at least one radial direction along the length of the side-light emitting portion to at least one target area of said contents along a longitudinal axis of the side-light emitting portion. A light-delivery system provides light to the fiber optic luminaire, having a light source mounted remotely from the interior of the container.

In a method of calibrating a light delivery device (10) having a solid state light source (12), for example comprising LEDs of an LED array, and an intensity control unit (16) comprising LED array driver and a dimmer module for generating a control signal for controlling at least the intensity of the light source, the light source is temporarily connected by a light guide (24; 24, 26) to a radiometer (38) for detecting irradiance of the delivered light. The light delivery device has a memory (30) for storing control signal parameters and associated radiance levels. The light delivery device is calibrated by adjusting the control signal parameters, e.g. a PWM duty cycle of a control signal to each of a series of predetermined settings, obtaining from the radiometer a corresponding series of delivered light irradiance levels measured thereby, storing the irradiance levels and associated control signal parameters in memory, and applying a best fit algorithm to the irradiance measurements and control signal parameters. Thereafter, a desired irradiate level can be set by selecting the best fit control signal parameters, such as duty cycle of a PWM control or other parameters. Output intensity levels may be measured at the same time as the irradiance levels and used to compensate for light source output level changes when setting a desired irradiance level.

A lamp including a reflective portion is utilized in a fluid purification system to maximize the light delivery to a photocatalytic coating that oxidizes gaseous contaminants that adsorb onto the surface to form carbon dioxide, water, and other substances. An ultraviolet light source positioned proximate to the honeycomb activates the titanium dioxide coating. In one example, the reflective portion is a reflective coating. Light directed out of the non-reflective portion of the lamp travels towards the honeycomb and absorbs onto the photocatalytic coating. Light directed towards the reflective portion on the lamp is reflected off the surface of the reflective portion and passes through the non-reflective portion of the lamp to also absorb onto the photocatalytic coating. The reflective portion reflects light towards the honeycomb that would otherwise be misdirected away from the honeycomb, increasing efficiency of the fluid purification system.

A metal layer having an aperture for delivering light, a method of forming the same, a light delivery module including the metal layer having the aperture, and a heat assisted magnetic recording head including the same are provided. The aperture of the metal layer has an inlet and an outlet of different sizes, and also has curved side surfaces. Also, the light delivery module includes the metal layer at an output end thereof, and the heat assisted magnetic recording head includes the light delivery module as an optical heating unit.

The invention relates to a light delivery device comprising a conversion element and one or several LEDs, which emit light into the conversion element. The light is then converted and emitted with a high radiant flux.