Abstract: The invention provides an LED module having a concentrated light output window. Light output from a first output window of an LED assembly (e.g. from a plurality of LEDs) is passed to an input window of a light directing element and redirected to be emitted from a second, smaller output window of a light directing element. This difference in size thereby concentrates the light output by the light directing element. The second output window (of the light directing element) is substantially perpendicular to the first output window, allowing for the size of the LED assembly in a particular dimension to not be necessarily constrained by the size of the second output window.

Abstract: The invention describes a light conversion module (100) comprising a transparent substrate (120), a conversion layer (110) attached to a light exit side of the substrate (120), wherein the conversion layer (110) is arranged to convert a part of laser light (10) of a first wavelength range entering the substrate (120) via a light entrance side to converted laser light (20) of a second wavelength range different from the first wavelength range, and to transmit another part of the laser light (10), such that a mixture of the transmitted laser light (15) and of a part of the converted laser light (20) leaves the conversion layer (110) in forward direction opposite to the side where the conversion layer (110) is attached to the light exit side of the substrate (120), and wherein the substrate (120) is arranged such that converted laser light (20) entering the substrate via the light exit side is inhibited to re-enter the conversion layer (110) via the light exit side by arranging a thickness of the substrate (120)

Abstract: An apparatus is disclosed including: a light source; a Fresnel lens, and a lens array. The Fresnel lens is disposed upstream from the light source to collimate light output by the light source. The lens array is disposed upstream from the Fresnel lens to mix collimated light that is output from the Fresnel lens. The lens array includes a plurality of optical elements arranged on a substrate. Each optical element includes a respective first planar surface arranged to face towards a different respective portion of the Fresnel lens and a second convex surface arranged to face away from the Fresnel lens.

Abstract: A lighting arrangement 10 is described with an LED element 30. A reference frame part 14 comprises a frame opening 26 bordered by frame edges 28a, 28b, 28c, 28d. The LED element 30 is arranged such that light is emitted through the frame opening 26 and is partially shielded at least at a first frame edge 28b. The reference frame part further comprises reference portions 20a, 20b, 20c, 20d to define positions relative to the frame 5 opening. A first reference portion 20a, 20b is provided on a first surface portion of the reference frame part 14 arranged parallel to a light emitting surface 38 of the LED element 30. A second reference portion 20c is arranged on a second surface portion of the reference frame part 14 arranged perpendicular to the first surface portion. A third reference portion 20d is arranged on a third surface portion of the reference frame part 14 arranged 10 perpendicular to both the first and second surface portions.

Abstract: The invention relates to an optical device and to a headlighting assembly including an optical device. An optical device includes a body of a transparent material arranged to receive light at at least one light input portion. At least a portion of the light is reflected at an outer surface of the body due to total internal reflection. A non-transparent housing is provided to at least partially cover the body. The body is held within the housing by protrusions arranged to abut against the outer surface.

Abstract: The invention describes an LED module comprising a number of light-emitting diodes arranged on a carrier; and an encapsulant covering the LEDs, which encapsulant comprises a translucent constituent and a metallic particle constituent, and wherein the constituents of the encapsulant are chosen to impart a desired degree of concealment to the LEDs in the inactive state of the LED module. The invention further describes a device comprising a device housing and at least one such LED module arranged to emit light through an aperture in the device housing, and wherein the constituents of the encapsulant of the LED modules are chosen according to a colour of the device housing. The invention further describes a method of manufacturing such an LED module.

Abstract: The invention describes a method of manufacturing an LED module, comprising the steps of providing a translucent encapsulant comprising a number of layers to enclose a number of LEDs of the LED module; modifying the surface structure of an outer surface of a layer to form at least one dense scattering region corresponding to the position of an LED of the LED module; to form at least one sparse scattering region that does not correspond to the position of an LED of the LED module; and to form a transition scattering region between a dense scattering region and a sparse scattering region. The invention further describes an LED module, and a device comprising a device housing and at least one such LED module.

Abstract: A method to make light-emitting diode (LED) units include arranging LEDs in a pattern, forming an optically transparent spacer layer over the LEDs, forming an optically reflective layer over the LEDs, and singulating the LEDs into LED units. The method may further include, after forming the optically transparent spacer layer and before singulating the LEDs, forming a secondary light-emitting layer that conforms to the LEDs, cutting the LEDs to form LED groups having a same arrangement, spacing the LED groups on a support, and forming the optically reflective layer in spaces between the LED groups.

Abstract: A lighting arrangement and a method for manufacturing the lighting arrangement are provided. The lighting arrangement has a holder to carry an optical element above a LED lighting element. The holder has an optical sub-holder and a connecting sub-holder connecting the optical sub-holder with a support member, where the LED lighting element is arranged on. The optical sub-holder has at least one stress release element dividing the optical sub-holder in one or more outer parts connected to the connecting sub-holder and a main part carrying the optical element, where a mechanical connection between the main part and the one or more outer parts is weakened by the stress release element extending through the optical sub-holder to enable the one or more outer parts to deform freely in case of thermal stress while maintaining the main part closer to the desired position compared to the one or more outer parts.

Abstract: Disclosed lens designs enable uniform light distribution without hot spot, achieving wider transfer functions of light compared with traditional lenses, with a benefit of reducing the number of light sources needed and overall cost for direct-lit backlight device. A disclosed lens includes a beam shaping element on the top thereof and a backlight device incorporating the lens and the beam shaping element to eliminate a light hot spot produced by the backlight device and obtain a uniform light distribution at the illumination field. The disclosed lens is especially useful when extremely wider transfer function or extremely thin backlight is needed.

Abstract: A device includes a light-emitting device (LED) having at least two vertical light-emitting sides, and a ring-shaped light guide having a bottom side, a top side comprising a light-emitting surface, an inner sidewall, and an outer sidewall defining an indentation having at least two vertical in-coupling surfaces mated to the at least two vertical light-emitting sides of the LED.

Abstract: A method according to embodiments of the invention includes, for a field of view comprising a plurality of portions, determining an amount of light for each portion. LEDs corresponding to each portion are selectively energized over a plurality of time periods, such that a sum of illumination generated by each LED during the plurality of time periods equals the determined amount of light. An image of the field of view is captured, for example by a camera.

Abstract: An array of light emitting devices is mounted on a support surface with the transparent growth substrate (e.g., sapphire) facing up. A photoresist layer is then deposited over the top surface of the growth substrate, followed by depositing a reflective material over the top and side surfaces of the light emitting devices to encapsulate the light emitting devices. The top surfaces of the light emitting devices are then ground down to remove the reflective material over the top surface of the photoresist. The photoresist is then dissolved to leave a cavity over the growth substrate having reflective walls. The cavity is then filled with a phosphor. The phosphor-converted light emitting devices are then singulated to form packaged light emitting devices. All side light is reflected back into the light emitting device by the reflective material and eventually exits the light emitting device toward the phosphor. The packaged light emitting devices, when energized, appear as a white dot with no side emission (e.g.

Abstract: Embodiments of the invention include a wavelength-converting composition as defined by R3?x?y?2Ax+yMzSi6?w1Alw1O3x+y+w1N11?7x/3?y?w1?2?2x/3, with ? being vacancies of the structure that are filled by oxygen atoms with 0<x?3, ?3?y<3, 0<z<1,0?w1?6, 0?x+y, x?y+z?3, 11?7/3x?y?w1?0, and 3x+y+w1?13. R is selected from the group comprising trivalent La, Gd, Tb, Y, Lu; A is selected from the group comprising bivalent Ca, Mg, Sr, Ba, and Eu; and M is selected from the group comprising trivalent Ce, Pr and Sm.

Abstract: A vehicle lighting arrangement with an LED element emits light through the frame opening and is partially shielded at least at a first frame edge. A reference frame part includes a frame opening bordered by frame edges, and reference portions to define positions relative to the frame opening. A first reference portion is provided on a first surface portion and is arranged parallel to a light emitting surface of the LED. A second reference portion is arranged on a second surface portion and is arranged perpendicular to the first surface portion. A third reference portion is arranged on a third surface portion and is arranged perpendicular to both the first and second surface portions. An optical element for shaping an illumination beam from the LED through the frame opening is in contact with the reference frame part to define a position of the optical element relative to the frame opening.

Abstract: Embodiments of the invention include a wavelength-converting material defined by AE3?x1?y+zRE3?x2+y?z[Si9?wAlw(N1?yCy)[4](N16?z?wOz+w)[2]]:Eux1,Cex2, where AE=Ca, Sr, Ba; RE=Y, Lu, La, Sc; 0?x1?0.18; 0?x2?0.2; x1+x2>0; 0?y?1; 0?z?3; 0?w?3.

Abstract: The invention describes a light conversion module (100) comprising a transparent substrate (120), a conversion layer (110) attached to a light exit side of the substrate (120), wherein the conversion layer (110) is arranged to convert a part of laser light (10) of a first wavelength range entering the substrate (120) via a light entrance side to converted laser light (20) of a second wavelength range different from the first wavelength range, and to transmit another part of the laser light (10), such that a mixture of the transmitted laser light (15) and of a part of the converted laser light (20) leaves the conversion layer (110) in forward direction opposite to the side where the conversion layer (110) is attached to the light exit side of the substrate (120), and wherein the substrate (120) is arranged such that converted laser light (20) entering the substrate via the light exit side is inhibited to re-enter the conversion layer (110) via the light exit side by arranging a thickness of the substrate (120)

Abstract: The invention provides an LED lighting device comprising first and second LED arrangements. Each LED arrangement is positioned on a respective substrate portion so as to form a respective LED module, where each LED arrangement is positioned on its substrate portion so as to be substantially within a single side of a substrate portions surface. The LED modules are arranged such that the first and second LED arrangements are positioned to run alongside one another, such that the positive pole (e.g. the anode) of each LED arrangement is positioned at a same first end and the negative pole (e.g. the cathode) of each LED arrangement is positioned a same second end.