Abstract: The invention provides an arrangement (1) comprising a device (1000), wherein the device (1000) comprises a luminescent material comprising element (100) and a light transmissive element (200), wherein: (a) the device (1000) has a first device axis (A1); (b) the luminescent material comprising element (100) comprises a luminescent material (110) configured to emit luminescent material light (111) upon irradiation with first light (11), wherein the luminescent material comprising element (100) has a first length (L1) and a characteristic first dimension (D1) perpendicular to the first length (L1), wherein D1/L1<1; wherein the luminescent material comprising element (100) is configured at a non-zero first distance (r1) from the first device axis (A1), and wherein the luminescent material comprising element (100) at least partly surrounds the first device axis (A1); (c) the light transmissive element (200) is transmissive for the first light (11), wherein the light transmissive element (200) comprises a eleme

Abstract: There is provided a light emitting diode, LED, filament lamp (100) which provides LED filament lamp light (100?). The LED filament lamp (100) comprises at least one LED filament (101) which has a LED filament length (L) which extends from a first end (1003) to a second end (1004). The at least one LED filament (101) provides LED filament light (101) and comprises an array (102) of a plurality of LEDs (103) and an encapsulant (104). The array (102) of a plurality of LEDs (103) provide LED light (103?) and extend along the LED filament length (L). The encapsulant (104) is at least partially enclosing the plurality of LEDs (103). The encapsulant (104) comprises a light scattering material (105).

Abstract: The invention provides a light generating device (1000), wherein: (I) the light generating device (1000) comprises: (a) a first light source (110) configured to generate first light source light (111) having a first light source light spectral power distribution, wherein the first light source (110) comprises a first laser light source (10) configured to generate first laser light source light (11); (b) a first luminescent material (210) configured to convert at least part of the first light source light (111) into first luminescent material light (211) having a first luminescent material spectral power distribution having an emission at one or more wavelengths selected from the wavelength range of 590-780 nm, wherein the first luminescent material (210) is configured in an optical resonator (230); (II) the first light source (110) and the first luminescent material (210) are configured to generate first luminescent material laser light (1211) having a first luminescent material laser light spectral power dis

Abstract: The invention provides a light generating device (1000) comprising a light source (10) and a luminescent element (20), wherein:—the light source (10) is configured to generate the first radiation (11); wherein the light source (10) comprises a laser light source;—the luminescent element (20) comprises (i) a plurality of element bodies (200) and (ii) a thermally conductive support (400); wherein the plurality of element bodies (200) comprises a plurality of first bodies (210) and a plurality of second bodies (220);—the plurality of first bodies (210) comprise a luminescent material (50), wherein the luminescent material (50) is configured to convert at least part of first radiation (11), selected from one or more of UV radiation and visible radiation, into luminescent material light (51); wherein the first bodies have a first thermal conductivity K1; wherein the first bodies (210) are configured in a light receiving relationship with the light source (10);—the plurality of second bodies (220), different from t

Abstract: The invention provides an assembly (2000) comprising a luminescent body (200), a thermally conductive element (400), and a coating layer (500), wherein: the luminescent body (200) comprises a luminescent material (210), wherein the luminescent body (200) comprises a ceramic luminescent body, and wherein the luminescent body (200) comprises an external surface (220); the thermally conductive element (400) comprises metal material (410); at least 25% of the external surface (220) is in thermal contact with the thermally conductive element (400); and—the coating layer (500) is configured between the luminescent body (200) and the thermally conductive element (400).

Abstract: There is presented a lighting device comprising: several light-emitting filaments (15, 15?) with solid-state light sources and a circuit board (10) with first and second electrically conductive tracks (13, 14) following first and second paths, respectively. Each light-emitting filament (15, 15?) comprises a first electrical contact (19, 19?) electrically connected to the first track (13) at a first point on the first path, and a second electrical contact (20, 20?) electrically connected to the second track (14) at a second point on the second path. The first and second points associated with each light-emitting filament (15, 15?) are arranged on an axis (A) which is non-perpendicular to a tangent (T1) to the first path at the first point and to a tangent (T2) to the second path at the second point. The lighting device may be adapted to emit light from what appears to be a surface according to an observer.

Abstract: The present disclosure relates to a lighting device. The lighting device (100) comprises a first elongated light-emitting diode, LED, filament (110) and a second elongated LED filament (120). The lighting device further comprises an at least partially light-transmissive envelope (130), which at least partially envelops at least the first LED filament and the second LED filament, and a base (140) on which the at least partly light-transmissive envelope is mounted. The first LED filament is configured to emit light with a different color temperature than the second LED filament. Further, the second LED filament is at least partially curved such that it defines at least part of a contour of a volume (421). The first LED filament is arranged at least partially within the volume.

Abstract: The present invention relates to an LED filament (100) comprising a carrier (110) comprising a plurality of LEDs (140) arranged in at least two columns of LEDs (150, 160). The plurality of LEDs (140) are grouped into at least two different subsets of LEDs (120, 130), wherein a first subset of the LEDs (120) is configured to emit light of a first color temperature, CT1, and a second subset of the LEDs (130) is configured to emit light of a second color temperature, CT2, CT2 being different from CT1. The LEDs (140) of the at least two different subsets of LEDs (120, 130) are arranged in an alternating intersecting configuration in the at least two columns of LEDs (150, 160) such that each column (150) comprises alternating segments (132, 124) configured to emit light of the first and the second color temperatures, respectively.

Abstract: The present invention relates to a light mixing chamber (100). The light mixing chamber (100) comprising: a first light mixing chamber part (120) comprising a light exit window (122) and a first side wall (124) having a first groove (126); a second light mixing chamber part (140) comprising a bottom wall (142) and a second side wall (144) having a second groove (146); and an LED substrate (160) supporting a plurality of LEDs (162,164,166,168). The LED substrate (160) is arranged into the first (126) and second grooves (146), interconnecting the first and the second light mixing chamber parts (120,140) such that the light mixing chamber (100) is formed. The plurality of LEDs (162,164,166,168) of the LED substrate (160) is facing an inner cavity (180) of the light mixing chamber (100).

Abstract: There is provided a light emitting diode, LED, filament lamp (100) which has a longitudinal axis (LA) and provides LED filament lamp light (101). The LED filament lamp (100) comprises a LED filament (102) which comprises a light transmissive, elongated substrate (103). Said substrate (103) has a first main surface (105) at a first side (105) and a second main surface (106) at a second side (106?) opposite to the first side (105?). A plurality of LEDs (104) is mounted only onto said first main surface (105) and configured to emit LED light (107). An encapsulant (108, 114) covers the plurality of LEDs (104) and at least part of said first main surface (105).

Abstract: A lighting device (1000), which is arranged to be attached to a mounting surface of an object, comprises an LED strip (100). The LED strip (100) comprises (i) an elongated carrier (1100) with an upper surface (1110) having a first upper surface portion (1111), (ii) a plurality of light-emitting diodes (1200) arranged on the first upper surface portion (1111), and (iii) an attachment component (1300) for attaching the lighting device (1000) to the mounting surface. The attachment component (1300) comprises an adhesive surface (1301) that faces in at least one of a first direction (1121) and a second direction (1122), the first direction (1121) being parallel to the normal of the upper surface (1110), and the second direction (1122) being perpendicular to the normal of the upper surface (1110) and to the direction of elongation (1120) of the elongated carrier (1100).

Abstract: The invention relates to an illumination device (10) comprising a plurality of concave shaped reflectors (20-1, 20-2), each reflector forming a reflector cavity (25) in which a light source (21) is provided for emitting light towards a light emission window (24). The illumination device of the above known kind is capable of emitting different light emission distribution thus improving its implementation in indoor applications.

Abstract: A light emitting device configured to tunably emit light with a total color temperature (CTtot), comprising: a carrier comprising a first major surface and an opposite second major surface, a first light source, arranged on said first major surface, and arranged to emit light with a first color temperature (CT1) tunably adjustable within a first range from a first low to a first high color temperature, a second light source, arranged on said second major surface, and arranged to emit light with a second color temperature (CT2) tunably adjustable within a second range from a second high to second low temperature, a controller configured to individually control the first and second light sources so to tunably adjust CT1 and CT2 from a first state to a second state according to a preselected scheme, by increasing CT1 and decreasing CT2 between said first and second states, such that CTtot remains unvaried.

Abstract: The invention provides a 3D printed object (210) and a method of manufacturing such an object (210) by means of fused de-position modelling.

Abstract: The invention provides a method wherein 3D printed layers are stacked, but wherein at one or more positions one layer is shifted sideways relative to the other. It looks like a (small) excursion. Hence, the one layer deviates sideways from the layer below and returns back on the layer below. This may be over a relatively small length. The excursion is chosen such, that there is an opening between the lower layer and the layer that deviates sideways. In this way, a 3D printed item comprising a stack of layers may have (physical) openings, which allow transmission of light. In general, the layer height of the layers is not adapted. The deviations or excursions may be provided in a regular way. This provides a 3D printed with a regular arrangement of openings Note that not each layer of the 3D printed item necessarily includes such deviations or excursions.

Abstract: The present invention relates to a color tunable and/or color temperature tunable LED filament (20, 22, 24), said LED filament comprising an elongated carrier (220), said elongated carrier comprising a first major surface (222) and a second major surface (224) arranged opposite to said first major surface, a plurality of LEDs (210) arranged in at least one linear array on said first surface of said elongated carrier, wherein the plurality of LEDs includes LEDs of different colors and/or different color temperatures, a first elongated transparent or substantially transparent layer (230) covering the plurality of LEDs on the first major surface and also at least partly covering said first major surface, and a first elongated light scattering layer (240), arranged to at least partially cover said first transparent or substantially transparent layer.

Abstract: A lighting device (1000), which is arranged to be attached to a mounting surface of an object, comprises an LED strip (100). The LED strip (100) comprises (i) an elongated carrier (1100) with an upper surface (1110) having a first upper surface portion (1111), (ii) a plurality of light-emitting diodes (1200) arranged on the first upper surface portion (1111), and (iii) an attachment component (1300) for attaching the lighting device (1000) to the mounting surface. The attachment component (1300) comprises an adhesive surface (1301) that faces in at least one of a first direction (1121) and a second direction (1122), the first direction (1121) being parallel to the normal of the upper surface (1110), and the second direction (1122) being perpendicular to the normal of the upper surface (1110) and to the direction of elongation (1120) of the elongated carrier (1100).

Abstract: The present disclosure relates to a LED filament system (100) comprising a LED filament arrangement (105) and a controller (120). The LED filament arrangement comprises a plurality of LED filaments (110a-c). The LED filaments are interwound around a common central axis (A) such that each LED filament has a spiral-shape. In the LED filament arrangement, two neighboring LED filaments differ by a translation pitch (t) along the central axis. The controller is configured to control power supply to the LED filaments such that at least one of the plurality of LED filaments is individually controllable. The controller is further configured to control the power supply to the LED filaments in a first mode, in which all of the LED filaments are in an on-state and the controller provides power supply above a first power level to the LED filaments. The controller is further configured to control the power supply to the LED filaments in a second mode in which at least one of the LED filaments is in an off-state.

Abstract: The present invention relates to a light mixing chamber (100). The light mixing chamber (100) comprising: a first light mixing chamber part (120) comprising a light exit window (122) and a first side wall (124) having a first groove (126); a second light mixing chamber part (140) comprising a bottom wall (142) and a second side wall (144) having a second groove (146); and an LED substrate (160) supporting a plurality of LEDs (162,164,166,168). The LED substrate (160) is arranged into the first (126) and second grooves (146), interconnecting the first and the second light mixing chamber parts (120,140) such that the light mixing chamber (100) is formed. The plurality of LEDs (162,164,166,168) of the LED substrate (160) is facing an inner cavity (180) of the light mixing chamber (100).

Abstract: A beam shaping device (1; 31) comprising first (3; 33) and second (4; 37) optically transparent substrates, a liquid crystal layer (2; 36) sandwiched there between, and first (5; 34) and second (6; 35) electrodes arranged on a side of the liquid crystal layer (2; 36) facing the first substrate (3; 34). The beam shaping device (1; 31) is controllable between beam-shaping states, each permitting passage of light through the beam-shaping device in a direction perpendicular thereto. The beam shaping device (1; 31) is configured in such a way that application of a voltage (V) across the first (5; 34) and second (6; 35) electrodes results in an electric field having a portion essentially parallel to the liquid crystal layer (2; 36) in a segment thereof between neighboring portions of the electrodes (5, 6; 34; 35) and extending substantially from the first substrate (3; 34) to the second (4; 35) substrate.