Abstract: A solid state lighting module (102) for attachment to a socket (103) through rotation of the solid state lighting module around an axis of rotation (111). The solid state lighting module (102) comprises at least one solid state light-source (112); a heat spreading member (104) having two surfaces arranged opposite each other and in thermal connection with each other, the first surface (114) being in thermal connection with the solid state light-source (112); and fastening means (109) arranged to co-operate with fastening means (113) comprised in the socket (103) to bring the second surface (115) of the heat spreading member (104) in thermal connection with a heat sink (110) comprised in the socket (103). The second surface (115) of the heat spreading member (104) has a surface topography with at least one peak (119) and at least one valley (120) arranged concentrically in relation to the axis of rotation (111).

Abstract: A series arrangement of LED loads (LP1-LP4) is coupled between output terminals of a rectifier having its input terminals coupled to a mains supply supplying a low frequency AC voltage. Control means render the LED loads conductive one by one, when the amplitude of the supply voltage increases, and non-conductive one by one when the amplitude of the supply voltage decreases. The first LED load (LP1, LP2) has a forward voltage that is substantially higher than that of the other LED loads. As a consequence, the LED utilization is comparatively high, thus allowing the LED loads used in the series arrangement to be comparatively cheap.

Abstract: A lighting module (1) comprising at least one light emitting device (3) arranged on a first carrier (10); driving electronics (4) for driving the at least one light emitting device (3) arranged on a second carrier (11); and an optical interface (5) for outputting light emitted by the at least one light emitting device (3), wherein the second carrier (11) is arranged in a plane substantially parallel to the first carrier (10), wherein the first (10) and second (11) carriers are configured such that a projection of the first carrier (10) onto the plane is substantially non-overlapping with the second carrier (11) so as to form a non-overlapping region, wherein the driving electronics is at least partially arranged in the non-overlapping region. The inventive lighting module enables more efficient use of the space in the lighting module.

Abstract: A lighting system is disclosed which includes a light source unit and a projection system for producing a desired light distribution pattern in a target area, especially for use in an automotive head lighting, studio and theater lighting, indoor spots with adjustable beam width or direction, architectural dynamic lighting, disco lighting and other. The lighting system is especially suitable for a light source unit having one or more Lambertian light sources, especially a plurality of LEDs. For generating a desired light distribution pattern in the target area, the light source unit may include a plurality of collimators that are configured especially such that the curved focal plane (P) of the projection system intersects with or tangentially touches the exit apertures of the collimators.

Abstract: A solid state lighting module (102) for attachment to a socket (103) through rotation of the solid state lighting module around an axis of rotation (111). The solid state lighting module (102) comprises at least one solid state light-source (112); a heat spreading member (104) having two surfaces arranged opposite each other and in thermal connection with each other, the first surface (114) being in thermal connection with the solid state light-source (112); and fastening means (109) arranged to co-operate with fastening means (113) comprised in the socket (103) to bring the second surface (115) of the heat spreading member (104) in thermal connection with a heat sink (110) comprised in the socket (103). The second surface (115) of the heat spreading member (104) has a surface topography with at least one peak (119) and at least one valley (120) arranged concentrically in relation to the axis of rotation (111).

Abstract: A lighting assembly (100) configured to be mechanically and electrically connected to a socket (150), the lighting assembly comprising a lighting module (102) comprising a light source (106), electrical contacting means (108) electrically connected to the light source and a heat spreader (110) in thermal contact with the light source; and a connector (104) being rotatable in relation to the lighting module (102). The connector comprises connector locking means (119) for locking the lighting assembly to a socket through interaction with receiving locking means comprised in the socket when the lighting module is axially inserted into the socket and the connector is rotated relative to the lighting module and the socket, thereby bringing the electrical contacting means (108) into contact with corresponding receiving contacting means (122) comprised in the socket.

Abstract: A series arrangement of LED loads (LP1-LP4) is coupled between output terminals of a rectifier having its input terminals coupled to a mains supply supplying a low frequency AC voltage. Control means render the LED loads conductive one by one, when the amplitude of the supply voltage increases, and non-conductive one by one when the amplitude of the supply voltage decreases. The first LED load (LP1, LP2) has a forward voltage that is substantially higher than that of the other LED loads. As a consequence, the LED utilization is comparatively high, thus allowing the LED loads used in the series arrangement to be comparatively cheap.

Abstract: In a method of lighting at least part of a space, a light emitting diode (LED) string is used. The LED string comprises a first LED segment and at least one further LED segment, which are connected in series, each LED segment comprising at least one LED. The LED string is powered by a rectified AC voltage. The first LED segment is powered when the rectified AC voltage is above a first voltage level, and the first LED segment and the further LED segment are powered when the rectified AC voltage is above a second voltage level higher than the first voltage level. The first LED segment is arranged to radiate light to a first volume of the space, and the further LED segment is arranged to radiate light to a second volume of the space, the first volume being at least partly different from the second volume. The first volume may at least partly overlap the second volume.

Abstract: The invention relates to a method and a device for driving an LED string of a first LED segment (11) and at least one further LED segment (12, 13, 14) connected in series. Each LED segment has at least one light emitting diode, LED. The LED string is powered by a rectified AC mains voltage. The first LED segment (11) is powered when the rectified AC mains voltage is above a first voltage level, and the first LED segment and the further LED segment are powered when the rectified AC mains voltage is above a second voltage level higher than the first voltage level. The first LED segment emits light having a first color temperature, and the further LED segment emits light having a second color temperature higher than the first color temperature. The light emitted by the first LED segment and the light emitted by the further LED segment are superimposed. The color temperature change of the light emitted by the LED string, when dimmed, resembles the color temperature change of an incandescent lamp.

Abstract: A lighting module (1) having a connection end (2) for connection to a lamp holder (3), and a light output end (4) for outputting light, wherein the lighting module (1), at the light output end (4), is provided with a mechanical interface comprising first (6) and second (7) protrusions extending in a direction parallel with a longitudinal axis (13) of the lighting module and being configured to interact with corresponding protrusions (6?,7?) on an identical mechanical interface to transfer at least one of a rotational force and a pulling force to the lighting module (1), so that a device (1?) provided with such an identical mechanical interface can be used as a tool for connecting/disconnecting the lighting module (1). An advantage is that it is possible to utilize one lighting module as a tool to connect/disconnect another lighting module from a lamp holder.

Abstract: A lighting module (1) comprising at least one light emitting device (3) arranged on a first carrier (10); driving electronics (4) for driving the at least one light emitting device (3) arranged on a second carrier (11); and an optical interface (5) for outputting light emitted by the at least one light emitting device (3), wherein the second carrier (11) is arranged in a plane substantially parallel to the first carrier (10), wherein the first (10) and second (11) carriers are configured such that a projection of the first carrier (10) onto the plane is substantially non-overlapping with the second carrier (11) so as to form a non-overlapping region, wherein the driving electronics is at least partially arranged in the non-overlapping region. The inventive lighting module enables more efficient use of the space in the lighting module.

Abstract: A lighting system is disclosed comprising a light source unit (1) and a projection system (2) for producing a desired light distribution pattern in a target area, especially for use in an automotive head lighting, studio and theatre lighting, indoor spots with adjustable beam width or direction, architectural dynamic lighting, disco lighting and other. The lighting system is especially suitable for a light source unit (1) having one or a plurality of Lambertian light sources (11), especially a plurality of LEDs. For generating a desired light distribution pattern in the target area, the light source unit (1) comprises a plurality of collimators (12) which are dimensioned and/or arranged especially such that the curved focal plane (P) of the projection system (2) intersects with or tangentially touches the exit apertures of the collimators (12).

Abstract: The invention describes a lighting assembly (10, 10?, 20, 20?) for use in a lighting arrangement (2) of a vehicle (1), comprising a projection lens (11, 21) and an array (12, 22) of light sources (S11, . . . , S26), wherein the projection lens (11, 21) and the light source array (12, 22) are arranged according to an asymmetry displacement (?i, ?2, di, d2) of the optical axis (X1, X2) of the projection lens (11, 21), and wherein the light sources (S11, . . . , S26) of the light source array (12, 22) of the lighting assembly (10, 10?, 20, 20?) are individually controllable to adjust a swivel angle (?1, ?2) of a light beam (BL, BH) generated by that lighting assembly (10, 10?, 20, 20?). The invention further describes a controller (3) for controlling the light sources (S11, . . . , S26) of such a lighting assembly (10, 10?, 20, 20?).

Abstract: The present invention provides for improved brightness and reduced power consumption in transflective displays operating in transmissive mode. The invention is based on the inclusion of a depolarizing means (206) between the transflector (201) and the rear stack polarizer (202). The depolarizer (206) is arranged to selectively depolarize light originating from the backlight (203) and reflected by the transflector (201), without substantially affecting the light that is transmitted through the transflector. Thereby part of the reflected light is transmitted back through the rear stack polarizer (202) and can be recycled in the backlight (203). The invention is applicable to any transflective display having a transflector (201) that changes polarization of light originating from the backlight (203) upon reflection back towards the backlight (202).