Abstract

Methods and apparatus are provided for ultraviolet (UV) fluid purification, wherein the fluid is in a gaseous, liquid or solid form or combination thereof, comprising UV-C LED modules having improved light extraction efficiency. UV-C LED(s) are in optical communication with one or more UV-C transmissive window elements.

IPC Classes  ?

• A61L 2/10 - Ultraviolet radiation
• A61L 2/26 - Accessories
• A61L 9/20 - Ultraviolet radiation
• C02F 1/32 - Treatment of water, waste water, or sewage by irradiation with ultraviolet light
• A23L 3/28 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating with ultraviolet light
• A23L 2/50 - Preservation of non-alcoholic beverages by irradiation or electric treatment without heating

Abstract

A first plurality (201) of network nodes (120-123, 130-133) of a network (100) is associated with a first cryptographic keying material and the multicast IP address. A second plurality (202) of network nodes (120-123, 130-133) of the network (100) is associated with a second cryptographic keying material and the multicast IP address. The first cryptographic keying material has a different secret than the second cryptographic keying material.

IPC Classes  ?

• H04L 29/06 - Communication control; Communication processing characterised by a protocol
• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• H04W 12/04 - Key management, e.g. using generic bootstrapping architecture [GBA]
• H04L 9/08 - Key distribution
• H04L 29/08 - Transmission control procedure, e.g. data link level control procedure

Abstract

Disclosed is a method for improving a lighting condition with a wearable computing device (100), the method comprising determining (302) an actual light condition with an optical sensor arrangement (114, 220); determining (303) the user activity with a further sensor arrangement (116, 230) for determining a user activity, said user activity being associated with a suitable lighting condition for performing said activity; comparing (304), on the wearable computing device, the actual light condition with the suitable light condition; and generating (306, 406) a signal with the wearable device if the actual light condition deviates from the suitable light condition. A computer program product including computer program code for implementing this method when executed on a wearable computing device (100), a wearable computing device (100) including the computer program product and a lighting system kit including a lighting system (200) and the wearable computing device (100) are also disclosed.

IPC Classes  ?

• H05B 37/02 - Controlling

Abstract

A lighting device or a lamp bulb (100, 200) with a smooth appearance comprises at least one light source (101); a heat sink component (104, 204), having a bottom (1043) and a side wall (1044) extending from the bottom (1044), wherein the bottom (1043) comprises a protrusion (1041) and wherein the at least one light source (101) thermally contacts the protrusion (1041) of the heat sink component (104, 204); and a cover provided on the sidewall (1044) opposite to the bottom(1043), thereby defining an air chamber (1051, 2051) between the cover, the side wall (1044), the bottom (1043) and the protrusion (1041).

IPC Classes  ?

• F21V 29/83 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
• F21V 19/00 - Fastening of light sources or lamp holders
• F21V 29/74 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
• F21V 3/00 - Globes; Bowls; Cover glasses
• F21V 7/00 - Reflectors for light sources
• F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
• F21K 9/23 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• F21K 9/233 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/237 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings - Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21Y 101/00 - Point-like light sources
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

The invention relates to a power splitter for a variable number of loads, a power splitting method for a variable number of loads and a software product for power splitting. It is possible to provide power splitting for a variable number of loads, which allows for an efficient distribution of power while reducing unnecessary overhead, with the determination of an overall power demand for the variable number of loads being concentrated in the power splitter, which may then request the desired amount of power from the power supply.

IPC Classes  ?

• H04L 12/10 - Current supply arrangements
• H05B 37/02 - Controlling
• G06F 1/26 - Power supply means, e.g. regulation thereof