Abstract: A liquid chromatography flow cell including an integrated light source and an integrated detection chamber. The integrated light source includes a plurality of light emitting diodes (LEDs), wherein each LED emits light of a specific wavelength. The light emitted from the integrated light source is directed to pass through a sample in a flow chamber of the flow cell without any optical conditioning, and the light not absorbed by the sample flows out of the flow chamber directly into the integrated detection chamber, where an intensity of the unabsorbed light is measured by detectors coupled to the integrated chamber.

Abstract: Systems and methods for achieving increased irradiation and/or illumination in a photo reactive system is disclosed. In one example, a photo reactive system includes a light source, a refractive cylindrical optic, and a curved reflector. By utilizing the refractive cylindrical optic, angular spread of the light source is reduced, which in turn reduces a size of the curved reflector for directing the light rays onto a work piece. Consequently, a more compact photo reactive system with higher irradiation and/or illumination capabilities can be achieved.

Abstract: A system for irradiating a microplate may include a modular light engine with one or more light emitting devices. The light emitting devices are configured to emit germicidal radiation to irradiate the microplate, which is configured to be positioned below the modular light engine inside a chamber of the microplate irradiation system. In this way, a uniform intensity of germicidal radiation may be output by light emitting devices, resulting in disruption of contaminating nucleic acids present in the microplate.

Abstract: Methods and systems are provided for separating polarized UV light. In one example, a method may include passing polarized source light through a group of at least four prisms to collimate and separate a second-harmonic generation (SHG) beam from a pump beam. The separated SHG beam may then be further passed through a spatial filter to reduce spatial distribution.

Abstract: Systems are provided for a frame of an optic element of a lighting system. In one example, a baffle frame including extended exterior sidewalls and inner angled walls extending below a bottom surface of the optic element may reduce light reflecting off a workpiece and escaping outside and interior of the baffle frame.

Abstract: Methods and systems are provided for ultra-violet curing, and in particular, for ultra-violet curing of optical fiber surface coatings. In one example, a curing device includes a first elliptic cylindrical reflector, with a second elliptic cylindrical reflector housed within the first elliptic cylindrical reflector. The first elliptic cylindrical reflector and second elliptic cylindrical reflector have a co-located focus, and a workpiece to be cured by the curing device may be arranged at the co-located focus.

Abstract: Methods and systems are provided for separating polarized UV light. In one example, a method may include passing polarized source light through a first prism, the polarized source light including desired light and undesired light, separating the desired light from the fundamental light, and passing the separated desired light through a second prism. The separated desired light which is passed through the second prism may then be further passed through a spatial filter.

Abstract: A curing device comprises a first elliptic cylindrical reflector and a second elliptic cylindrical reflector, the first elliptic cylindrical reflector and the second elliptic cylindrical reflector arranged to have a co-located focus, and a light source located at a second focus of the first elliptic cylindrical reflector, wherein light emitted from the light source is reflected to the co-located focus from the first elliptic cylindrical reflector and retro-reflected to the co-located focus from the second elliptic cylindrical reflector.

Abstract: Methods and systems are provided for calibrating a UV lamp having a plurality of arrays or channels of light emitting diodes. The calibration involves adjusting a drive current applied to the UV lamp based on an actual irradiance output by its light-emitting diodes relative to a target irradiance. The calibration is selectively performed when a stabilized temperature condition of the lamp is met.

Abstract: A system for irradiating a microplate may include a light engine with a plurality of light sources, such as light-emitting diodes, included in one or more linear arrays. The plurality of light sources are configured to emit germicidal irradiation, which is directed to the microplate by optical components, such as optical lenses positioned on top of each well of the microplate. The linear array is linearly movable so that as the linear array scans across the microplate, the optical components direct the germicidal irradiation to a plurality of surfaces of each well.

Abstract: Systems and methods are provided for a UV-VIS spectrophotometer, such as a UV-VIS detector unit included in a high-performance liquid chromatography system. In one example, a system for the UV-VIS detector unit may include a first light source, a signal detector, a flow path positioned intermediate the first light source and the signal detector, a second light source, and a reference detector. The first light source, the signal detector, and the flow path may be aligned along a first axis, and the second light source and the reference detector may be aligned along a second axis, different than the first axis.

Abstract: Methods and systems are provided for photochemically synthesizing tetrachloromethane in an industrial scale using a plurality of arrays or channels of light emitting diodes. A wavelength output by an SLM lamp is customized to bias the photochemical reaction towards a target reaction and target product and away from a side reaction and side product. The higher yield of the target product improved efficiency and reduces the need for complex purification for removal of the side product.

Abstract: Systems are provided for a modular multi-wavelength UV-VIS detector unit, such as an absorbance detector (e.g., spectrophotometer) included in a high-performance liquid chromatography system. In one example, a detector unit includes one or more light emitters and a sliding assembly configured to slidingly move a flow cell relative to the one or more light emitters, the one or more light emitters mounted on a floating rig to facilitate alignment between the one or more light emitters and the flow cell when the sliding assembly is in a closed position.

Abstract: Systems and methods for achieving increased irradiation and/or illumination in a photo reactive system is disclosed. In one example, a photo reactive system includes a light source, a refractive cylindrical optic, and a curved reflector. By utilizing the refractive cylindrical optic, angular spread of the light source is reduced, which in turn reduces a size of the curved reflector for directing the light rays onto a work piece. Consequently, a more compact photo reactive system with higher irradiation and/or illumination capabilities can be achieved.

Abstract: Methods and systems for operating a lighting device are provided. In one example, a method of operating a lighting device including an array of light-emitting elements, an array of heat sinks, and an array of cooling fans, wherein each of the heat sinks corresponds to one of the light-emitting elements, and each of the cooling fans corresponds to one of the heat sinks, includes conductively coupling each of the heat sinks to the corresponding light-emitting element, directing air flow from each of the cooling fans to the corresponding heat sink, measuring heat sink temperatures corresponding to each of the heat sinks with a temperature sensor positioned at the heat sinks, adjusting a speed of each of the cooling fans to reduce a deviation of the corresponding heat sink temperature from a target temperature, and adjusting the target temperature based on an aggregate characteristic of the cooling fan speeds.

Abstract: Methods and systems are provided for separating polarized UV light. In one example, a method may include passing polarized source light through a group of at least four prisms to collimate and separate a second-harmonic generation (SHG) beam from a pump beam. The separated SHG beam may then be further passed through a spatial filter to reduce spatial distribution.

Abstract: Methods and systems are provided for a light emitting device. In one example, an illumination system comprises a plurality of light sources, each light source of the plurality of light sources comprising a light emitting diode configured to emit a collimated beam of light of a color, a plurality of reflective optical components oriented identically to one another, wherein the plurality of reflective optical components is configured to direct the first collimated beam, the second collimated beam, the third collimated beam, the fourth collimated beam, and the fifth collimated beam along a common axis, and an output positioned to receive light along the common axis, wherein the output is configured to generate an output beam.

Abstract: A radiation monitor for a lighting device, and operating methods and systems therefor are provided. In one example, a radiation monitor may include a first sensor receiving radiation output directly from a light-emitting element of the lighting device and radiation output from external sources; and a second sensor receiving the radiation output from the external sources without receiving the radiation output directly from the light-emitting element of the lighting device. The radiation monitor may determine an intensity of the radiation output directly from the light-emitting element based on a difference in the output signals from the first sensor and the second sensor.

Abstract: A liquid chromatography flow cell including an integrated light source and an integrated detection chamber. The integrated light source includes a plurality of light emitting diodes (LEDs), wherein each LED emits light of a specific wavelength. The light emitted from the integrated light source is directed to pass through a sample in a flow chamber of the flow cell without any optical conditioning, and the light not absorbed by the sample flows out of the flow chamber directly into the integrated detection chamber, where an intensity of the unabsorbed light is measured by detectors coupled to the integrated chamber.

Abstract: Systems are provided for a modular multi-wavelength UV-VIS detector unit, such as an absorbance detector (e.g., spectrophotometer) included in a high-performance liquid chromatography system. In one example, a detector unit includes one or more light emitters and a sliding assembly configured to slidingly move a flow cell relative to the one or more light emitters, the one or more light emitters mounted on a floating rig to facilitate alignment between the one or more light emitters and the flow cell when the sliding assembly is in a closed position.