Abstract: A ceramic green wavelength conversion element (120) is coated with a red wavelength conversion material (330) and placed above a blue light emitting element (110) such that the ceramic element (120) is attached to the light emitting element (110), thereby providing an efficient thermal coupling from the red and green converters (330, 120) to the light emitting element (110) and its associated heat sink. To protect the red converter coating (330) from the effects of subsequent processes, a sacrificial clear coating (340) is created above the red converter element (330). This clear coating (340) may be provided as a discrete layer of clear material, or it may be produced by allowing the red converters to settle to the bottom of its suspension material, thereby forming a converter-free upper layer that can be subjected to the subsequent fabrication processes.

Abstract: The present invention relates lamp (10), comprising: a carrier (12); a series (28a) of solid state light sources (30) mounted on the carrier; and a cover member (32a) covering the series of solid state light sources, wherein openings (40) are provided in the carrier between the solid state light sources of said series of solid state light sources, such that light emitted from the series of solid state light sources and reflected back towards the carrier by the cover member is allowed to pass the carrier through the openings. The present invention also relates to a lighting fixture comprising at least one such lamp.

Abstract: A lamp comprising a driver assembly (1), said driver assembly comprising a driver board (11) with driver electronics, at least one point light source (31) and a heat sink (2), the heat sink comprising a top side (25) and a bottom side (24), a central space (20) extending from said bottom side to said top side and adapted for receiving said driver board of said driver assembly, a zone (23) provided at said top side and adapted for receiving said at least one point light source (31), wherein a plurality of fins (21) adapted for dissipating heat are extending on opposite sides of said central space, and an extension of said central space in at least one radial direction (y) of said heat sink is larger than an extension of said zone in said radial direction (y) of said heat sink such that said central space is provided with at least one section (22a, 22b) arranged offset from and radially adjacent to said zone.

Abstract: A ceramic green wavelength conversion element (120) is coated with a red wavelength conversion material (330) and placed above a blue light emitting element (110) such that the ceramic element (120) is attached to the light emitting element (110), thereby providing an efficient thermal coupling from the red and green converters (330, 120) to the light emitting element (110) and its associated heat sink. To protect the red converter coating (330) from the effects of subsequent processes, a sacrificial clear coating (340) is created above the red converter element (330). This clear coating (340) may be provided as a discrete layer of clear material, or it may be produced by allowing the red converters to settle to the bottom of its suspension material, thereby forming a converter-free upper layer that can be subjected to the subsequent fabrication processes.

Abstract: There is provided a light emitting module (1) having at least one light emitting element (3) which is arranged to emit light of a primary wavelength, and a wavelength converting element (5) arranged at a distance from the at least one light emitting element (3). The wavelength converting element (5) is arranged to convert at least part of the light of a primary wavelength into light of a secondary wavelength. Further the module (1) comprises a first optical component (7) having surface structures (11) on a surface facing away from the light emitting element (3). Light rays incident on the first optical component (7) at small angles are reflected and light rays incident on the first optical component (7) at large angles are transmitted and bent towards a normal of the first optical component (7). The invention is advantageous in that it provides a compact and efficient light-directing module.

Abstract: Proposed is a light-emitting apparatus 200,300,400, comprising a semiconductor light emitting device 220,320,420 and a transparent ceramic body 230,330,430 comprising a wavelength converting material positioned in light receiving relationship to the semiconductor device. The light-emitting apparatus is characterized in that the side surfaces 233,333,433 of the ceramic body 230,330,430 are at an oblique angle 234,334,434 relative its bottom surface 231,331,431. This is especially advantageous to unlock the wave-guide modes inside the body 230,330,430. Consequently the total flux emitted from the light-emitting apparatus 200,300,400 can be enhanced considerably. Alternatively, the brightness of the top surface 232,332,432 of the ceramic body 230,330,430 can be enhanced considerably.

Abstract: The present invention relates to a light emitting diode (LED) module (10), comprising at least one LED chip (12) having a surface (13) for emitting light, and a ceramic conversion plate (14). The LED module is characterized in that the ceramic conversion plate includes a first segment (18) covering a first portion of the light emitting surface of the LED chip(s) and a second segment (20) provided alongside the first segment covering a second portion of the light emitting surface of the LED chip(s), wherein at least one of the segments comprises a wavelength-converting material for converting light emitted from the LED chip(s) to a certain wavelength. The present invention also relates to a method for the manufacturing of such an LED module, and a ceramic conversion plate for use in an LED module.

Abstract: A display device (100) comprising a plurality of lighting units (101), each lighting unit comprising at least one light emitting diode (202) being provided with a fluorescent element (203) arranged to absorb at least part of the light emitted by said light emitting diode and emit light of a wavelength range different from that of the absorbed light is provided. The fluorescent element (203) comprises at least one phosphor being an europium(II)-activated halogeno-oxonitridosilicate of the general formula EaxSiyN2/3x+4/3y:EuzOaXb.

Abstract: The present invention relates to a headlight (10) for a vehicle. The headlight comprises a light emitting diode (LED) (12) including at least one LED chip (18) adapted to emit blue light and at least one overlying converter layer (20) for converting part of the blue light into yellow light, wherein part of the blue and yellow light forms bluish white light emitted in the direction of the LED normal and part of the blue and yellow light forms yellowish white light emitted at larger angles of departure, and means (14, 16) for directing at least part of the yellowish white light in a central direction of the headlight and at least part of the bluish white light in a peripheral direction of the headlight. The present invention also relates to a vehicle comprising such a headlight.

Abstract: Proposed is a light-emitting apparatus 200,300,400, comprising a semiconductor light emitting device 220,320,420 and a transparent ceramic body 230,330,430 comprising a wavelength converting material positioned in light receiving relationship to the semiconductor device. The light-emitting apparatus is characterized in that the side surfaces 233,333,433 of the ceramic body 230,330,430 are at an oblique angle 234,334,434 relative its bottom surface 231,331,431. This is especially advantageous to unlock the wave-guide modes inside the body 230,330,430. Consequently the total flux emitted from the light-emitting apparatus 200,300,400 can be enhanced considerably. Alternatively, the brightness of the top surface 232,332,432 of the ceramic body 230,330,430 can be enhanced considerably.

Abstract: A light-emitting device (1) is disclosed, which comprises a radiation source (2), an inorganic layer (3) comprising a luminescent material (4); and a scattering layer (5) comprising scattering particles (6). The scattering layer (5) is located between the radiation source (2) and the inorganic layer (3), which is composed of a ceramic material.

Abstract: A small and cheap user's input device for measuring scroll-and-click movements of a finger (132) or other object relative to the device comprises at least one sensor unit (124, 126, 130) and sensor signal analyzing means (136) to derive click information and scroll information from the same sensor signal. The analyzing means is designed such as to recognize a first typical time pattern of a click action and a second typical time pattern of a scroll action. Moreover in analyzing a sensor signal obtained during a time interval data obtained during other time intervals can be used to supply reliable signals. This device can be used in a number of different consumer apparatus, such as a mobile phone (134).

Abstract: The present invention relates to a headlight (10) for a vehicle. The headlight comprises a light emitting diode (LED) (12) including at least one LED chip (18) adapted to emit blue light and at least one overlying converter layer (20) for converting part of the blue light into yellow light, wherein part of the blue and yellow light forms bluish white light emitted in the direction of the LED normal and part of the blue and yellow light forms yellowish white light emitted at larger angles of departure, and means (14, 16) for directing at least part of the yellowish white light in a central direction of the headlight and at least part of the bluish white light in a peripheral direction of the headlight. The present invention also relates to a vehicle comprising such a headlight.

Abstract: The present invention relates to a light emitting diode (LED) module (10) comprising an LED (14) chip for emitting light, which LED chip is mounted on a substrate (12), and an optical element (16) positioned on top of the LED chip for converting the wavelength of at least part of the light emitted from the LED chip. The LED module is characterized by means (18, 20, 22, 24, 26, 28, 32, 34) for laterally and angularly aligning the optical element with the LED chip. The alignment means ensure that the optical element automatically aligns itself to the LED chip when it is placed on the chip, and that the correct position and orientation of the optical element is maintained during subsequent manufacturing and operation of the LED module. The present invention also relates to a method for the manufacturing of such an LED module.

Abstract: The present invention relates to a light emitting diode (LED) module (10), comprising at least one LED chip (12) having a surface (13) for emitting light, and a ceramic conversion plate (14). The LED module is characterized in that the ceramic conversion plate includes a first segment (18) covering a first portion of the light emitting surface of the LED chip(s) and a second segment (20) provided alongside the first segment covering a second portion of the light emitting surface of the LED chip(s), wherein at least one of the segments comprises a wavelength-converting material for converting light emitted from the LED chip(s) to a certain wavelength. The present invention also relates to a method for the manufacturing of such an LED module, and a ceramic conversion plate for use in an LED module.

Abstract: The present invention relates to a light-emitting diode (LED) module (10) comprising a first LED chip (12) for emitting light of a first color, a LED element (14) comprising a second LED chip, which element is placed alongside the first LED chip and adapted to emit light of a second color, and a ceramic conversion plate (16). The ceramic conversion plate covers only a portion of the first LED chip and comprises a wavelength-converting material for converting light emitted from the first LED chip to a third wavelength. The size of the portion of the first LED chip that is covered by the ceramic conversion plate is selected so that the LED module produces mixed light of a certain desired color The present invention also relates to a method of manufacturing such a LED module.

Abstract: A display device (100) comprising a plurality of lighting units (101), each lighting unit comprising at least one light emitting diode (202) being provided with a fluorescent element (203) arranged to absorb at least part of the light emitted by said light emitting diode and emit light of a wavelength range different from that of the absorbed light is provided. The fluorescent element (203) comprises at least one phosphor being an europium(II)-activated halogeno-oxonitridosilicate of the general formula EaxSiyN2/3x+4/3y:EuzOaXb.

Abstract: In an optical input device based on movement of an object (15) and the device relative to each other and which comprising at least one optical sensor unit including a laser (3) having a laser cavity for generating a measuring beam (13), converging means (50) for converging the measuring beam in an action plane and for converging measuring beam radiation reflected by the object in the laser cavity to generate a self-mixing effect in the laser and measuring means for measuring the result of the self-mixing effect, which effect is determined by said movement, the converging means (50) is adapted to provide a self-mixing effect that is smaller than a possible maximum but larger than a detection threshold for an extended range of distances (?Z) between the object and the device. This allows obtaining the required self-mixing effect in an extended range of distances between the object and the device.

Abstract: A method of and an input device for measuring scroll or click movement of an object and the input device relative to each other, includes determining the presence of the object on a window of the input device. Lower frequencies of an output signal from single sensor unit are separated and used for determining both the scroll and click motions. This allows measuring scroll movement and click movement with one sensor unit of the input device and reduction of costs and size of the input device.

Abstract: An optical input device for measuring the movement of a finger (15) ia accommodated in a housing provided with a transparent window (12) for transmitting a measurement beam (13) from a diode laser (3) to the finger and radiation reflected by the finger to a detector (4). This feature prevents that grease and dust disturb and block the measuring beam.