Abstract: The present disclosure relates to a lighting fixture that is capable of providing white light over an extended range of correlated color temperatures.

Abstract: The present disclosure relates to a lighting fixture that is capable of providing white light over an extended range of correlated color temperatures.

Abstract: A lighting fixture with a control system, a light source, and an image sensor is disclosed. The image sensor is configured to capture an image in response to an image capture signal. The light source emits light in response to a drive signal. The control system provides the drive signal to control the light emitted by the light source, and when an image needs to be captured, provides the image capture signal. When capturing an image, the control system may coordinate the drive signal and the image capture signal so that the image sensor captures the image when the light source is emitting light, if light is needed or desired. The control system may control the drive signal to control the light emitted by the light source or control other lighting fixtures in the lighting network based, at least in part, on information derived from one or more captured images.

Abstract: A lighting fixture with a control system, a light source, and an image sensor is disclosed. The image sensor is configured to capture an image in response to an image capture signal. The light source emits light in response to a drive signal. The control system provides the drive signal to control the light emitted by the light source, and when an image needs to be captured, provides the image capture signal. When capturing an image, the control system may coordinate the drive signal and the image capture signal so that the image sensor captures the image when the light source is emitting light, if light is needed or desired. The control system may control the drive signal to control the light emitted by the light source or control other lighting fixtures in the lighting network based, at least in part, on information derived from one or more captured images.

Abstract: The present disclosure relates to a lighting fixture that is capable of providing white light over an extended range of correlated color temperatures.

Abstract: The present disclosure relates to a lighting fixture that is capable of providing white light over an extended range of correlated color temperatures.

Abstract: Semiconductor light emitting devices are provided that include a first string of light emitting diodes (“LED”) that emit unsaturated light having a color point that is within at least eight MacAdam ellipses of one or more points within a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit unsaturated light having color point that is within at least eight MacAdam ellipses from one or more points within a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit is provided that is configured to supply a first drive current to the first string of LEDs, a second drive current to the second string of LEDs and a third drive current to the third string of LEDs, wherein at least two of the first, second and third drive currents are independently controllable.

Abstract: Semiconductor light emitting devices are provided that include a first string of light emitting diodes (“LED”) that emit unsaturated light having a color point that is within at least eight MacAdam ellipses of one or more points within a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit unsaturated light having color point that is within at least eight MacAdam ellipses from one or more points within a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit is provided that is configured to supply a first drive current to the first string of LEDs, a second drive current to the second string of LEDs and a third drive current to the third string of LEDs, wherein at least two of the first, second and third drive currents are independently controllable.

Abstract: Light emitting devices include a first string of LEDs that emit light having a color point that is within at least eight MacAdam ellipses of a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit light having color point that is within at least eight MacAdam ellipses of a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit supplies respective drive currents to the first string of LEDs, the second string of LEDs and the third light source, at least two of which are independently controllable.

Abstract: Light emitting devices include a first string of LEDs that emit light having a color point that is within at least eight MacAdam ellipses of a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit light having color point that is within at least eight MacAdam ellipses of a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit supplies respective drive currents to the first string of LEDs, the second string of LEDs and the third light source, at least two of which are independently controllable.

Abstract: An apparatus for determining a volume of a construction material sample is provided, comprising at least one sample-interacting device configured to interact with the construction material sample so as to determine at least one surface characteristic thereof. A computer device is configured to be capable of receiving the at least one surface characteristic from the at least one sample-interacting device, and to manipulate the at least one surface characteristic so as to form a three-dimensional representation of the construction material sample. The computer device is further configured to determine the volume of the construction material sample from the three-dimensional representation thereof. By determining the mass of the construction material sample, the density of the construction material sample can be provided. An associated method is also provided.