Abstract: A lighting fixture includes a surround formed to receive a tile therein, the surround having an outward facing side. The surround includes tabs that permit suspension of the surround in a ceiling grid. A light emitting diode (LED) is mounted on the outward facing side of the surround. A driver is connected to the LED to provide power to the LED for directing light from the outward facing side.

Abstract: A lighting fixture includes a surround formed to receive a tile therein, the surround having an outward facing side. The surround includes tabs that permit suspension of the surround in a ceiling grid. A light emitting diode (LED) is mounted on the outward facing side of the surround. A driver is connected to the LED to provide power to the LED for directing light from the outward facing side.

Abstract: A lighting fixture includes a surround formed to receive a tile therein, the surround having an outward facing side. The surround includes tabs that permit suspension of the surround in a ceiling grid. A light emitting diode (LED) is mounted on the outward facing side of the surround. A driver is connected to the LED to provide power to the LED for directing light from the outward facing side.

Abstract: A lighting fixture includes a surround formed to receive a tile therein, the surround having an outward facing side. The surround includes tabs that permit suspension of the surround in a ceiling grid. A light emitting diode (LED) is mounted on the outward facing side of the surround. A driver is connected to the LED to provide power to the LED for directing light from the outward facing side.

Abstract: A lighting device includes a cover portion configured to have a hinged connection for mounting on a housing. The cover portion includes a light emitting diode (LED) and a mixing chamber having a reflective internal surface for receiving light from the LED. A phosphorescent lens is disposed opposite the LED and is configured to reflect light from the LED back to the mixing chamber and to emanate absorbed light from the lens to a surrounding region outside of the mixing chamber. An LED driver circuit is configured to power the LED, the LED driver circuit being electrically connected to a power source. Other embodiments are also disclosed.

Abstract: A lighting device includes a cover portion configured to have a hinged connection for mounting on a housing. The cover portion includes a light emitting diode (LED) and a mixing chamber having a reflective internal surface for receiving light from the LED. A phosphorescent lens is disposed opposite the LED and is configured to reflect light from the LED back to the mixing chamber and to emanate absorbed light from the lens to a surrounding region outside of the mixing chamber. An LED driver circuit is configured to power the LED, the LED driver circuit being electrically connected to a power source. Other embodiments are also disclosed.

Abstract: A lighting device includes a cover portion configured to have a hinged connection for mounting on a housing. The cover portion includes a light emitting diode (LED) and a mixing chamber having a reflective internal surface for receiving light from the LED. A phosphorescent lens is disposed opposite the LED and is configured to reflect light from the LED back to the mixing chamber and to emanate absorbed light from the lens to a surrounding region outside of the mixing chamber. An LED driver circuit is configured to power the LED, the LED driver circuit being electrically connected to a power source. Other embodiments are also disclosed.

Abstract: A lighting device includes a cover portion configured to have a hinged connection for mounting on a housing. The cover portion includes a light emitting diode (LED) and a mixing chamber having a reflective internal surface for receiving light from the LED. A phosphorescent lens is disposed opposite the LED and is configured to reflect light from the LED back to the mixing chamber and to emanate absorbed light from the lens to a surrounding region outside of the mixing chamber. An LED driver circuit is configured to power the LED, the LED driver circuit being electrically connected to a power source. Other embodiments are also disclosed.

Abstract: Methods for operating a material dispensing system. The method includes measuring numerical values of an operating parameter, such as line velocity, material pressure, or material temperature, of the dispensing system to predict a future numerical value of the operating parameter. The predicted numerical value of the operating parameter is used to accurately define a start time, which is measured from the detection of the presence of a workpiece being transported past an applicator of the dispensing system, at which to initiate dispensing of the material from the applicator. A calibration procedure is provided for deriving a mathematical relationship used to determine the predicted numerical value of the operating parameter.

Abstract: Apparatus and methods for detecting adhesives. The apparatus includes an adhesive sensor having a photodiode sensitive to infrared radiation at different wavelengths. The adhesive sensor may sense infrared radiation thermally emitted from a sufficiently hot adhesive. Alternatively, the adhesive sensor may sense infrared radiation from first and second near infrared diodes that emit at different wavelengths that are reflected with different intensities from an adhesive that is at a temperature insufficient to emit infrared radiation at an intensity to be readily detectable. A visible light source may be provided for targeting and focusing the adhesive sensor.

Abstract: Methods for operating a material dispensing system. The method includes measuring numerical values of an operating parameter, such as line velocity, material pressure, or material temperature, of the dispensing system to predict a future numerical value of the operating parameter. The predicted numerical value of the operating parameter is used to accurately define a start time, which is measured from the detection of the presence of a workpiece being transported past an applicator of the dispensing system, at which to initiate dispensing of the material from the applicator.

Abstract: Methods for operating a material dispensing system. The method includes measuring numerical values of an operating parameter, such as line velocity, material pressure, or material temperature, of the dispensing system to predict a future numerical value of the operating parameter. The predicted numerical value of the operating parameter is used to accurately define a start time, which is measured from the detection of the presence of a workpiece being transported past an applicator of the dispensing system, at which to initiate dispensing of the material from the applicator. A calibration procedure is provided for deriving a mathematical relationship used to determine the predicted numerical value of the operating parameter.

Abstract: Device and method for inspecting a polychromatic region, such as a polychromatic pattern, on a moving workpiece. The method includes device includes a solid-state light source, preferably a light emitting diode, adapted to emit light in a range of wavelengths for illuminating the polychromatic region. Photodetectors are positioned relative to the workpiece to intercept light from the light source reflected by the polychromatic region. Each of the photodetectors is adapted to detect reflected light within a corresponding one of a plurality of bands defined within the range of wavelengths. The method includes detecting intensities of the light reflected from the polychromatic region within different wavelength bands in the range of wavelengths and evaluating a ratio of the intensities for comparison with a standard ratio to ascertain a variation in the evaluated ratio.

Abstract: Device and method for inspecting a polychromatic region, such as a polychromatic pattern, on a moving workpiece. The method includes device includes a solid-state light source, preferably a light emitting diode, adapted to emit light in a range of wavelengths for illuminating the polychromatic region. Photodetectors are positioned relative to the workpiece to intercept light from the light source reflected by the polychromatic region. Each of the photodetectors is adapted to detect reflected light within a corresponding one of a plurality of bands defined within the range of wavelengths. The method includes detecting intensities of the light reflected from the polychromatic region within different wavelength bands in the range of wavelengths and evaluating a ratio of the intensities for comparison with a standard ratio to ascertain a variation in the evaluated ratio.

Abstract: Methods for operating a material dispensing system. The method includes measuring numerical values of an operating parameter, such as line velocity, material pressure, or material temperature, of the dispensing system to predict a future numerical value of the operating parameter. The predicted numerical value of the operating parameter is used to accurately define a start time, which is measured from the detection of the presence of a workpiece being transported past an applicator of the dispensing system, at which to initiate dispensing of the material from the applicator. A calibration procedure is provided for deriving a mathematical relationship used to determine the predicted numerical value of the operating parameter.

Abstract: An apparatus and method for on line detection and measurement of cold emulsion adhesives, including a sensor of a presence of an adhesive on a substrate, the sensor being arranged to sense an amount of absorption of two specific wavelengths of near infrared energy by the adhesive, the two specific wavelengths including a first wavelength within an absorption band for water and a second wavelength outside an absorption band for water. The two sensed amounts are converted into two signals, a difference between the signals being indicative of the moisture content of the adhesive. If the two signals are the same, then the moisture content approximates zero. Otherwise, the difference is proportional to the moisture content.