Abstract: A composite material (11,21) for light filtering, comprising: a polymeric matrix material and particles of neodymium compound doped in the polymeric matrix material. A lighting apparatus (10,20) comprises the composite material. A method for determining a doping concentration of particles of neodymium compound in the composite material, and a method for determining a thickness of the composite material are also described.

Abstract: Aspects of the present disclosure are directed to a composite light source which includes at least one blue light source having peak wavelength in the range of about 400 nm to about 460 nm; at least one yellow-green garnet phosphor; and at least one narrow-band red-emitting down-converter. Such composite light source may have a Lighting Preference Index (LPI) of at least 120. In other aspects the disclosure is directed to composite light source comprising at least one blue light source having peak wavelength in the range of about 400 nm to about 460 nm; at least one yellow-green garnet phosphor; and at least one broad red down-converter. In this latter aspect the composite light source may have a Lighting Preference Index (LPI) of at least 120. Numerous other aspects are provided.

Abstract: The present disclosure relates to PWM dimming circuit with low stand-by power. A lighting apparatus driver is provided, comprising: a power supplier to supply power to a lighting load; and a discrete PWM dimming circuit, the PWM dimming circuit is to receive PWM signal, and to control the switching of the power supplier based on the PWM signal, wherein the power supplier is capable of being turned off by the PWM dimming circuit.

Abstract: The specification and drawings present a new apparatus such as a lighting apparatus, the apparatus comprising at least one LED (or OLED) module, configured to generate a visible light such as white light, and at least one component such as optical component comprising a compound consisting essentially of the elements neodymium (Nd) and fluorine (F), and optionally including one or more other elements. The lighting apparatus is configured to provide a desired light spectrum by filtering the generated visible light using the compound. The at least one component can comprise a NdFxOy compound with values of x and y determining a content ratio F/O, which may be adjusted during manufacturing of the NdFxOy compound to provide desired output light parameters of the apparatus including at least a desired output light spectrum realized by filtering the generated visible light using the NdFxOy compound.

Abstract: Provided is a method and a system for multi-channel acoustic communication and sensing. For example, there is provided a system that includes a processor and a memory. The processor, when executing instructions from the memory, can perform certain operations. The operations can include classifying a motion detected near an ultrasonic receiver based on a Doppler shift observed in a signal measured by the ultrasonic receiver. The classifying can further include detecting a side lobe in a power spectrum of the signal to indicate that the motion has been detected.

Abstract: The present disclosure provides an end cap assembly, a lamp using the end cap assembly and a method of assembling the lamp. The end cap assembly includes an end cap, an isolation module, a mounting module, a conductive contact, a driving module and a potted material. The end cap defines therein an end cap interior chamber. The isolation module comprises a first end coupled to the end cap and a second end having a first opening. The mounting module is coupled to the isolation module and at least partially is accommodated in the first opening, and the mounting module has a second opening. The conductive contact is at least partially accommodated in the second opening. The driving module is at least partially accommodated in the end cap interior chamber. The potted material is filled in the end cap interior chamber and surrounding at least part of the driving module.

Abstract: Materials and optical components formed thereof that are suitable for use in a lighting apparatus to impart a color filtering effect to visible light. At least a portion of such an optical component is formed of a composite material comprising a polymeric matrix material and an inorganic particulate material that contributes a color filtering effect to visible light passing through the composite material, and the particulate material comprises a neodymium compound containing Nd3+ ions.

Abstract: The present application discloses a light and disinfection system and a method for disinfecting an illuminated surface by the light and disinfection system, wherein the light and disinfection system comprises an illumination module, including an illumination source; a distance sensor for detecting a distance between the light and disinfection system and the illuminated surface; and a disinfection module, including a disinfection light source and a control unit, the control unit receiving the distance detected by the distance sensor and controlling an irradiation power of the disinfection light source based on the distance, such that an irradiation amount of the illuminated surface accumulated within one disinfection circle is kept at a predetermined value.

Abstract: The present invention provides a lamp that includes: an LED light source; a lens having an incident surface and an emergent surface, the incident surface defining a first cavity, and the emergent surface having an annular protuberance thereon; and a light filter device accommodated within a space defined by the annular protuberance of the lens, wherein, the LED light source is situated within or proximate to the first cavity, to enable light emitted from the LED light source entering the lens from the incident surface and exiting the lens from the emergent surface to be at least partially transmitted through the light filter device.

Abstract: The present disclosure includes an LED lamp assembly comprising a glass envelope, an LED platform supported by a stem arrangement disposed within the envelope, a base hermetically sealed to the envelope, a gas disposed within the envelope providing thermal conductivity between the LED platform and the envelope, and a getter disposed within the envelope for absorbing volatile organic compounds. The lamp may maintain a ratio of helium to oxygen that achieves both an acceptable thermal conductivity and an acceptable lumen output over the life of the LED lamp.

Abstract: The present disclosure relates to a light and disinfection system, comprising: a lighting system which includes an illumination source and a diffusion hood suitable for the illumination source; a disinfection system which includes a disinfection light source and a cover adapted to transmit the disinfection light source, wherein the diffusion hood and the cover are respectively used for the illumination source and the disinfection light source.

Abstract: Materials and optical components formed thereof that are suitable for use in a lighting apparatus to impart a color filtering effect to visible light. At least a portion of such an optical component is formed of a composite material comprising a polymeric matrix material and an inorganic particulate material that contributes a color filtering effect to visible light passing through the composite material, and the particulate material comprises a neodymium compound containing Nd3+ ions.

Abstract: The specification and drawings present a new apparatus such as a lighting apparatus, the apparatus comprising at least one LED (or OLED) module configured to generate a visible light such as white light, and at least one component such as an optical component comprising multiple (two or more) compounds, each containing neodymium (Nd) and at least one compound including fluorine (F) for imparting a desired color filtering effect to provide a desired light spectrum, where a color of the desired light spectrum in a color space is determined by relative amounts of the two or more compounds in the at least one component.

Abstract: An apparatus including at least one light emitting diode (LED) module, configured to generate visible light; and at least one component comprising a compound comprising elements of neodymium fluoride and a dopant to lower a refractive index of the compound as compared to neodymium fluoride, the compound configured with the LED module to provide a desired light spectrum by filtering the visible light generated by the LED module.

Abstract: The specification and drawings present a new apparatus such as a lighting apparatus, the apparatus comprising at least one LED (or OLED) module, configured to generate a visible light such as white light, and at least one component such as optical component comprising a compound consisting essentially of the elements neodymium (Nd) and fluorine (F), and optionally including one or more other elements. The lighting apparatus is configured to provide a desired light spectrum by filtering the generated visible light using the compound. The at least one component can comprise a NdFxOy compound with values of x and y determining a content ratio F/O, which may be adjusted during manufacturing of the NdFxOy compound to provide desired output light parameters of the apparatus including at least a desired output light spectrum realized by filtering the generated visible light using the NdFxOy compound.

Abstract: A lighting apparatus includes at least one light source generating a visible light and an optical component, the optical component includes a transparent, translucent or reflective substrate and a coating on a surface of the substrate to cause a color filtering effect to the visible light passing through the optical component, the coating includes a compound containing Nd3+ ions and F? ions.

Abstract: An LED light bulb includes a stand, a plurality of LED light sources supported by the stand and arranged along edges of at least two geometric shapes, and an envelope enclosing the stand and the plurality LED light sources. A method of assembling an LED light bulb includes arranging a plurality of LED light sources along edges of at least two geometric shapes, supporting the arrangement of LED light sources on a stand, and enclosing the plurality of LED light sources and the stand within an envelope.

Abstract: An LED lamp includes a housing having an endcap, an optical portion, and components located within the housing, the components including a plurality of LED segments and a reconfiguration circuit configured to route LED segment electrical connections from a serial to a parallel mode, an LED driver circuit, a line sense circuit to detect presence/absence of AC line voltage, and a rechargeable battery connected to a boost driver circuit to provide electrical power to the LED light source in the absence of line voltage, and a control processor to monitor and control one or more of the plurality of components. The LED lamp configured to illuminate all LED segments irrespective of the presence or absence of the line voltage.

Abstract: The present invention discloses an LED lamp comprising a base, a lamp body coupled to the base, a light emitting assembly arranged inside the lamp body, a positioning component fixed on the lamp body and defining a groove, a flexible component having a fixed end fixed to the lamp body and a free end, and a driver board defining a slot and electrically connected with the light emitting assembly, wherein the driver board is disposed in the groove and the free end of the flexible component is locked into the slot. A method for assembling the LED lamp is also described.

Abstract: The specification and drawings present a new apparatus such as a halogen incandescent lamp is presented herein, the apparatus comprising a light source such as a light-generating element made of tungsten, configured to generate a visible light such as white light having chromaticity coordinates of the light source in a clear center in a color space, and a component such as light-transmissive envelope, enclosing the light source and comprising a coating with a compound comprising elements of neodymium and fluorine and configured to provide a desired light spectrum by filtering the generated visible light using the compound, where the desired light spectrum having chromaticity coordinates in the color space being shifted from the clear center below the black-body locus and outside of a four-step MacAdam ellipse of the light source to meet a predefined requirement for a modified spectrum lamp.