Abstract: The invention provides a method for producing a 3D item (1) by means of fused deposition modelling, wherein: (A) the method comprises: 3D printing a filament comprising 3D printable material (202) to provide the 3D item (1) comprising 3D printed material; (B) the filament comprises (i) a first core, comprising a core material, wherein the core material comprises a first thermoplastic material, and (ii) a first ribbon structure (2280), comprising a plurality of first rounds, wound around the first core; and (C) nearest neighboring first rounds of at least one set of two first rounds have a non-zero first mutual distance thereby defining a first inter-ribbon region where the core material is exposed.

Abstract: A light emitting diode, LED, filament (100) comprising an array of a plurality of light emitting diodes (110), LEDs, circuitry (120) coupled to the plurality of LEDs, a carrier (130) arranged to support the plurality of LEDs, an encapsulant (140) comprising a translucent material and a luminescent material configured to at least partially convert the LED light into converted light, wherein the plurality of LEDs comprises a first set (150) of LEDs arranged to emit first LED light in a first wavelength range of 430-490 nm, and a second set (160) of LEDs arranged to emit second LED light in a second wavelength range of 315-420 nm, wherein the circuitry is configured to provide the first set of LEDs with a first current, Ic1, and to provide the second set of LEDs with a second current, Ic2, during operation of the LED filament, wherein Ic2>Ic1.

Abstract: A light generating system includes first light generating device configured to generate a first wavelength variable light changing between at least two centroid wavelengths having a difference of at least 10 nm, with a changing frequency of at least 50 Hz; a second light generating device configured to generate a second light having a different spectral power distribution from that of the first light generating device; and a luminescent material configured to convert at least part of one or more of the first or the second lights into luminescent light. The light generating system is configured to generate white system light including the luminescent light, the first device light, and the second device light.

Abstract: The present invention relates to a light-emitting diode (LED) filament (1) configured to provide LED filament light and comprising an elongated carrier (2) comprising a first surface (3) and a second surface (3?) arranged opposite to the first surface (3). The LED filament (1) further comprises a plurality of first light-emitting diodes (4). LEDs, distributed along the first surface (3) of the elongated carrier (2), the plurality of first LEDs (4) being configured to emit a first LED light having a dominant peak wavelength within a first wavelength range, and a plurality of second light-emitting diodes (5), LEDs, distributed along the second surface (3?) of the elongated carrier (2), the plurality of second LEDs (5) being configured to emit a second LED light having a dominant peak wavelength within a second wavelength range being different from the first wavelength range.

Abstract: The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a first luminescent material (210), a window element (400), and a light mixing chamber (500), wherein: (A) the first light generating device (110) is configured to provide first device light (111); wherein the first light generating device (110) comprises one or more of a laser and a superluminescent diode; (B) the second light generating device (120) is configured to generate second device light (121); wherein the second light generating device (120) comprises a solid state light source; (C) the light mixing chamber (500) is at least partly defined by the window element (400); (D) the window element (400) comprises (i) a first window element part (410) comprising the first luminescent material (210), wherein the first window element part (410) is configured in a light receiving relationship with the first light generating device (110), and (ii) a second window elem

Abstract: A light emitting diode, LED, filament arrangement (100), comprising at least one LED filament (110) comprising an array of a plurality of light emitting diodes, LEDs. The at least one LED filament (110) is of an elongated shape, and is at least partially extending along an axis, A. The at least one LED filament comprises at least one branch (120, 121) extending from the elongated LED filament (110) and is arranged at an angle, ?, to the axis A.

Abstract: The present invention relates to a method for producing, by means of fused deposition modelling, a 3D item that has the ability to dissipate relatively large amounts of heat. The method uses a 3D printable material (1) that comprises a 3D printable shell material (3) and a 3D printable core material (2). The 3D item (7) comprises a plurality of layers (6) of a 3D printed material (1?), each layer (6) having a layer shell comprising a 3D printed shell material (3?) and at least partly enclosing a layer core comprising a 3D printed core material (2?). The method comprises the steps of (i) feeding the 3D printable material (1) into a nozzle of a 3D printer, and (ii) layer-wise depositing the 3D printable material (1) to provide the 3D item (7). The 3D printable core material (2) comprises a metal having a core melting temperature, and the 3D printable shell material (3) comprises a thermoplastic material having at least one of a shell glass transition temperature and a shell melting temperature.

Abstract: The invention provides a method for producing a 3D printed item (1) by means of fused deposition modelling, wherein the 3D printed item (1) comprises a plurality of layers (322) of 3D printed material (202), comprising a layer part (1322) with a 3D printed shell material (1302) at least partially surrounding a 3D printed core material (1202), wherein the method comprises layer-wise depositing a 3D printable material (201) comprising a 3D printable core material (1201) and a 3D printable shell material (1301), and wherein:—the 3D printable core material (1201) comprises one or more of metal particles (260) and a metal wire (270), and the 3D printable shell material (1301) comprises wood particles (250), or—the 3D printable core material (1201) comprises wood particles (250), and the 3D printable shell material (1301) comprises inorganic material particles (280) selected from the group of glass particles and ceramic particles.

Abstract: The present invention generally relates to the field of a lighting device, and in particular to a disinfection lighting device (100) that is suitable for providing illumination as well as environmental disinfection functionality that is principally enabled by the photocatalysis process. The disinfection lighting device (100) comprises a first light source (101), a second light source (102), and an envelope (103). The first light source (101) is 5adapted for, in operation, emitting visible light (001). The second light source (102) is adapted for, in operation, emitting violet and/or ultraviolet (UV) light (002). The first light source (101) is arranged inside the said envelope (103). The envelope (103) comprises a recess (104) and the second light source (102) is arranged outside the said envelope (103) and in the said recess (104).

Abstract: The invention provides a method comprising a method for producing a 3D item by means of fused deposition modelling, the method comprising a 3D printing stage comprising layer-wise depositing an extrudate comprising 3D printable material, to provide the 3D item comprising 3D printed material, wherein the 3D item comprises a plurality of layers of 3D printed material, wherein the 3D printing stage comprises: a vertical support providing stage comprising providing a first layer (1100) of 3D printed material, wherein the first layer has a first layer top part with a first layer top height relative to the substrate and a first layer bottom part with a first layer bottom height relative to the substrate, wherein the first layer has a first layer height defined by the difference between the first layer top height and the first layer bottom height, wherein the value of the first layer bottom height is at least equal to the value of the first layer height, and an in-air printing stage comprising supportless deposit

Abstract: The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a third light generating device (130), a luminescent material (200), and a control system (300), wherein: (A) the first light generating device (110) comprises a first laser light source and is configured to generate first device light (111) having a first device peak wavelength (?1) and having a first spectral power distribution; wherein the first device peak wavelength (?1) is selected from the wavelength range of 445-475 nm; (B) the second light generating device (120) comprises a second laser light source and is configured to generate second device light (121) having a second device peak wavelength (?2) and having a second spectral power distribution, different from the first spectral power distribution; wherein the second device peak wavelength (?2) is selected from the range of 420-450 nm or from the range of 470-490 nm; (C) the luminescent material (200) is e

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 present invention relates to a method for manufacturing a 3D item (100) by means of fused deposition modelling (FDM), the method comprising the steps of: a) providing a shell component (5?) comprising a thermoplastic 3D printable shell material having a shell melting temperature (Tms) and/or a shell glass transition temperature (Tgs); b) providing a core component (2?) comprising a plurality of thermally conductive wires (3) and a flexible mantle (4) enclosing the plurality of thermally conductive wires (3); c) feeding the shell component (5) into a nozzle (6) of a 3D printer, the nozzle (6) having a nozzle temperature (Tn) being equal to or greater than the shell melting temperature (Tms) and/or the shell glass transition temperature (Tgs); d) a layer-wise depositing of the 3D printable shell material and the core component (2) to provide the 3D item (100) comprising a core-shell layer (100?) of 3D printed material, wherein the 3D printed material comprises a core (102) comprising the core component, and

Abstract: A light emitting device (1) comprising an element (2) comprising a volumetric low scattering material, the element comprising opposite first and second light incoupling surfaces (21, 22) and a circumferential surface (23) extending between the first and second light incoupling surfaces, at least one red laser diode (3) configured to emit red laser light (31), and being arranged at one of the light incoupling surfaces such that the red laser light is coupled into the element through the said one of the first and second light incoupling surfaces, a collimator (4) arranged and configured to collimate the red laser light (31), at least one LED (5) configured to emit LED light, the LED being arranged at one light incoupling surface, such that the LED light is coupled into the element through the said incoupling surface, and the scattering material being configured to make the path of laser light visible.

Abstract: The present invention generally relates to the field of a lighting unit (100), and in particular to a lighting unit (100) that is suitable for being part of a suspended ceiling (0001). The lighting unit (100) comprises one or more lighting tiles (1000) and an interface component (2000). The interface component (2000) forms at least a portion of a grid system (1020) for the suspended ceiling (0001) and for supporting the lighting tile (1000). The interface component (2000) comprises a central support portion (2001) having a first end (2002) facing a ceiling (0002), and a second end (2003) having a first flange (2004) and a second flange (2005) that are opposing each other.

Abstract: The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a first luminescent material (210), a window element (400), and a light mixing chamber (500), wherein: (A) the first light generating device (110) is configured to provide first device light (111); wherein the first light generating device (110) comprises one or more of a laser and a superluminescent diode; (B) the second light generating device (120) is configured to generate second device light (121); wherein the second light generating device (120) comprises a solid state light source; (C) the light mixing chamber (500) is at least partly defined by the window element (400); (D) the window element (400) comprises (i) a first window element part (410) comprising the first luminescent material (210), wherein the first window element part (410) is configured in a light receiving relationship with the first light generating device (110), and (ii) a second window elem

Abstract: A light emitting device configured to emit light with a total color temperature (CTtot), said light emitting device comprising at least one first light emitting diode (LED) filament, and at least one second LED filament, wherein each of the at least one first LED filament and the at least one second LED filament comprises an elongated carrier, and an array of light emitting diodes mounted on said substrate; and a controller for individually controlling said at least first LED filament and said at least one second LED filament, wherein said at least one first LED filament is arranged to emit light of a first color temperature (CT1), said first color temperature being controllable in a first color temperature range, from CT1low to CT1high, wherein said at least one second LED filament is arranged to emit light of a second color temperature (CT2), said second color temperature being controllable in a second color temperature range, from CT2low to CT2high, and wherein said controller is configured to control said

Abstract: This invention relates to a safety measure taken against unsafe exposure of high-intensity laser light that is relevant for the reliable and safer operation of laser-based lighting devices. According to this invention, a lighting device comprises a first light-emitting semiconductor device and a light-conversion device. The first light-emitting semiconductor device is a laser device configured to generate a first light output and the 5light-conversion device is configured to receive the first light output and convert at least part of the first light output into a converted light output. The lighting device further comprises an optical element configured to receive the converted light output from the light-conversion device. The optical element is configured to transmit the converted light output and the first light output, and attenuate the first light output above a threshold value of the first light output.

Abstract: An LED filament device is provided with a LED filament that has a plurality of sources of light. The sources of light are configured in an k*1 array with k=2 columns, and the array has a first set of at least 20 sources of light distributed over the columns. In a first column of the first set at least 90% of the total number of sources of light are selected from the group of (i) first sources of light and fifth sources of light. In a second column of the first set at least 80% of the total number of sources of light are selected from the group of second sources of light, third sources of light and fourth sources of light.

Abstract: The present disclosure relates to a light-emitting diode, LED, filament system (770) comprising a LED filament (100) and a controller (771). The LED filament comprises a carrier (120) arranged in the shape of a spiral formed by successive loops (250). The LED filament further comprises a plurality of LEDs (110) arranged in a linear array on one side of the carrier. The LEDs are arranged along the carrier in sections (140a-f), each section having a position along the spiral-shaped carrier. The controller is configured to control a power supply to a section, or to a group of sections, of the LED filament. The controller is adapted to control a section based on its position, or a group of sections based on the positions of the sections of said group.