Abstract: A lighting arrangement for general lighting, comprising a first light source Oadapted to emit a first light substantially only in a first predetermined spectrum in a range from 615 nm to 690 nm, one or more driver circuits adapted to provide a first pulsed driving current to the first light source for producing the first light pulsing with a first peak radiant power in the first predetermined spectrum sufficient to induce a photo-biomodulation response in a human body, and a second light source adapted to emit a second light, the second light source being capable of emitting at least 250 lumens.

Abstract: A lighting arrangement for providing visible light and radiation in another spectrum that is medically beneficial is provided. The lighting arrangement comprises a light source adapted to emit visible light; a radiation source adapted to emit radiation in a predetermined spectrum, and a driver circuit adapted to provide a first driving current that is pulsed and has a duty cycle of not greater than 20%. The predetermined spectrum is preferably in the range 760-1400 nm. The lighting arrangement is adapted to provide the first driving current to the radiation source but not the light source. Corresponding method and products employing such lighting arrangement are also provided.

Abstract: The invention relates to an LED light source comprising a light unit and a hollow curved cap covering the light unit. The light unit comprises a plurality of light emitting diodes (LEDs) distributed in the form of a spatial arrangement having a center position. The plurality of LEDs includes at least two different types of LEDs. Each type of LED is arranged for the emission of radiation within a different wavelength range. The cap is substantially transparent for radiation emitted by the light unit. The cap is further provided with an axially symmetric protrusion forming a depression in the exterior of the cap. The symmetry axis of the protrusion substantially coincides with the center position of the spatial arrangement of the plurality of LEDs.

Abstract: A safety endcap assembly to be arranged at an end of an LED lamp. It has an endcap base element, an endcap cover element, a connector pin, a contact element for connecting to the connector pin to LEDs, and a switch button. The endcap cover element is moveable between a protracted position and a retracted position, and the switch button is moveable between a first position and a second position. The switch button is arranged to disconnect contact element from the LEDs when the switch button is in the first position. The safety endcap assembly further has a switch opening mechanism configured to move the switch button to the first position when a certain condition is met.

Abstract: An LED lamp suitable for use in a luminaire, the LED lamp adapted for receiving electrical power from the luminaire and comprising: one or more LEDs; a ballast protection circuit including an impedance; a filter circuit; a switched-mode power supply for driving the LEDs; one or more sensing circuits for generating at least one output, in dependence on whether the electrical power received from the luminaire indicates that the electrical power is generated via a magnetic ballast, an electronic ballast which operates as a constant current ballast, an electronic ballast which operates as a constant power ballast, or not via a ballast; and a plurality of switches for defining a plurality of operation modes of the LED lamp, and for switching among the plurality of operation modes in dependence on the at least one output of the sensing circuits.

Abstract: The system includes a reservoir for fluid; a droplet generator for creating a stream of fluid droplets from the fluid wherein the velocity of the stream of droplets is within a range of 20 meters per second to 200 meters per second and the size of the droplets is within a range of 5 microns to 200 microns. A nozzle or nozzles direct the stream of droplets to safely clean a selected tooth or teeth surface area. The specific momentum of effective fluid droplets within the stream of fluid droplets is important in safe and effective cleaning.

Abstract: A safety endcap assembly to be arranged at an end of an LED lamp. It has an endcap base element, an endcap cover element, a connector pin, a contact element for connecting to the connector pin to LEDs, and a switch button. The endcap cover element is moveable between a protracted position and a retracted position, and the switch button is moveable between a first position and a second position. The switch button is arranged to disconnect contact element from the LEDs when the switch button is in the first position. The safety endcap assembly further has a switch opening mechanism configured to move the switch button to the first position when a certain condition is met.

Abstract: The invention relates to an LED light source comprising a light unit and a hollow curved cap covering the light unit. The light unit comprises a plurality of light emitting diodes (LEDs) distributed in the form of a spatial arrangement having a center position. The plurality of LEDs includes at least two different types of LEDs. Each type of LED is arranged for the emission of radiation within a different wavelength range. The cap is substantially transparent for radiation emitted by the light unit. The cap is further provided with an axially symmetric protrusion forming a depression in the exterior of the cap. The symmetry axis of the protrusion substantially coincides with the center position of the spatial arrangement of the plurality of LEDs.

Abstract: The invention relates to an LED light source comprising a light unit and a hollow curved cap covering the light unit. The light unit comprises a plurality of light emitting diodes (LEDs) distributed in the form of a spatial arrangement having a center position. The plurality of LEDs includes at least two different types of LEDs. Each type of LED is arranged for the emission of radiation within a different wavelength range. The cap is substantially transparent for radiation emitted by the light unit. The cap is further provided with an axially symmetric protrusion forming a depression in the exterior of the cap. The symmetry axis of the protrusion substantially coincides with the center position of the spatial arrangement of the plurality of LEDs.

Abstract: Methods and devices or writing an optical record carrier, in which a mark representing recorded data is written in a phase-change layer of a record carrier by a sequence of radiation pulses. A rear heating pulse is introduced after a last write pulse and a front heating pulse is introduced before the first write pulse. The power level of the front heating pulse and the power level of the rear heating pulse may be dependent on the length of the mark to be recorded and on properties of the record carrier.

Abstract: Methods and devices are described for writing to an optical record carrier, in which a mark representing recorded data is written in a phase-change layer of a record carrier by a sequence of radiation pulses. A rear heating pulse is introduced after a last write pulse and a front heating pulse is introduced before the first write pulse. The power level of the front heating pulse and the power level of the rear heating pulse may be dependent on the length of the mark to be recorded and on properties of the record carrier. The method results in a reduced jitter of the marks written, especially when writing at high recording speeds.

Abstract: An oral care system using a stream of fluid droplets for cleaning teeth includes a hand-held portable oral care device having a handle portion with a nozzle at a forward end thereof, a source of dental fluid and a source of pressurized gas, between 10-30 bar, both located in the handle portion. The system also includes a base unit which includes a reservoir tank for pressurized air, a reservoir tank for fluid, and a compressor connected to the gas reservoir. The handle includes valves for controlling the release of pressurized gas and fluid from the handle to the nozzle. Connecting ducts are arranged from the fluid and pressurized gas source to the nozzle such as to accelerate the pressurized gas droplets from the nozzle to a desired velocity.

Abstract: The system includes a reservoir for fluid; a droplet generator for creating a stream of fluid droplets from the fluid wherein the velocity of the stream of droplets is within a range of 20 meters per second to 200 meters per second and the size of the droplets is within a range of 5 microns to 200 microns. A nozzle or nozzles direct the stream of droplets to safely clean a selected tooth or teeth surface area. The specific momentum of effective fluid droplets within the stream of fluid droplets is important in safe and effective cleaning.

Abstract: The invention relates to a method and a device for recording an information signal 10 in a phase change layer of a recording medium. A mark is recorded by a sequence 13 of write pulses and previous marks between the marks to be recorded are erased by a sequence of erase pulses 14. De bias power level 191, 192 between the erase pulses is made dependent on the recording speed, thus obtaining low jitter of the recorded marks and at the same time preventing thermal cross write during erase.

Abstract: Methods and devices are described for writing an optical record carrier, in which a mark representing recorded data is written in a phase-change layer of a record carrier by a sequence of radiation pulses. A rear heating pulse 24 is introduced after a last write pulse 23, 26 and a front heating pulse 25 is introduced before the first write pulse 22,26. The power level 13 of the front heating pulse and the power level 15 of the rear heating pulse may be dependent on the length of the mark to be recorded and on properties of the record carrier. The method results in a reduced jitter of the marks written, especially when writing at high recording speeds.

Abstract: The invention relates to a method and a device for recording an information signal 10 in a phase change layer of a recording medium. A mark is recorded by a sequence 13 of write pulses and previous marks between the marks to be recorded are erased by a sequence of erase pulses 14. De bias power level 191, 192 between the erase pulses is made dependent on the recording speed, thus obtaining low jitter of the recorded marks and at the same time preventing thermal cross write during erase.

Abstract: The invention relates to a method and a device for recording an information signal 10 in a phase change layer of a recording medium. A mark is recorded by a sequence 13 of write pulses and previous marks between the marks to be recorded are erased by a sequence of erase pulses 14. De bias power level 191, 192 between the erase pulses is made dependent on the recording speed, thus obtaining low jitter of the recorded marks and at the same time preventing thermal cross write during erase.

Abstract: The invention relates to a method and a device for recording an information signal 10 in a phase change layer of a recording medium. A mark is recorded by a sequence 13 of write pulses and previous marks between the marks to be recorded are erased by a sequence of erase pulses 14. De bias power level 191, 192 between the erase pulses is made dependent on the recording speed, thus obtaining low jitter of the recorded marks and at the same time preventing thermal cross write during erase.

Abstract: The invention relates to a method and a device for recording an information signal 10 in a phase change layer of a recording medium. A mark is recorded by a sequence 13 of write pulses and previous marks between the marks to be recorded are erased by a sequence of erase pulses 14. De bias power level 191, 192 between the erase pulses is made dependent on the recording speed, thus obtaining low jitter of the recorded marks and at the same time preventing thermal cross write during erase.

Abstract: The invention relates to a method and a device for recording an information signal 10 in a phase change layer of a recording medium. A mark is recorded by a sequence 13 of write pulses and previous marks between the marks to be recorded are erased by a sequence of erase pulses 14. De bias power level 191, 192 between the erase pulses is made dependent on the recording speed, thus obtaining low jitter of the recorded marks and at the same time preventing thermal cross write during erase.