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: 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.

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: The invention provides a light generating system (1000) comprising: (i) a first set (1100) comprising n1 first light generating devices (110), (ii) a first optical element (410), and (iii) a luminescent body (200), wherein:—the n1 first light generating devices (110) are configured to generate first device light (111); wherein the n1 first light generating devices (110) may be selected from the group of lasers and superluminescent diodes;—the first set (1100) comprises k1 first subsets (1115) of each at least one first light generating device (110) of the n1 first light generating devices (110), wherein n1?3.

Abstract: The invention provides a light generating system (1000) comprising n first vertical cavity surface emitting lasers (110) and a control system (300), wherein n?1, wherein each of the n first vertical cavity surface emitting lasers (110) is configured to generate first laser light (111) changing between at least two centroid wavelengths (?nc,1, ?nc,2) having a wavelength difference of at least 10 nm, with a changing frequency of at least 50 Hz; wherein the control system (300) is configured to control the n first vertical cavity surface emitting lasers (110) such that system light (1001) is generated comprising the first laser light (111) of at least one of the n first vertical cavity surface emitting lasers (110), and wherein the control system (300) is configured to control a spectral power distribution of the system light (1001), wherein the system light (1001) is white light having a correlated color temperature in a range from 1800 K to 8000 K and a color rendering index of at least 70.

Abstract: The invention provides a light generating system (1000) comprising (a) first light generating device (110), (b) a first laser (2100), and (c) a second laser (2200), wherein:—the first light generating device (110) is configured to generate first device light (111) having a first device centroid wavelength (?cd,1), wherein the first light generating device (110) comprises one or more of a solid state material laser and a super luminescent diode; —the first laser (2100) comprises a first lanthanide based luminescent material (2110) configured to convert at least part of the first device light (111) having the first device centroid wavelength (?cd,1) into first luminescent material light (2111), wherein the first laser (2100) is configured downstream of the first light generating device (110) and is configured to provide first laser light (2101) comprising at least part of the first luminescent material light (2111), wherein the first laser light (2101) has a first centroid laser wavelength (?cl,1) in the visibl

Abstract: A light emitting diode, LED, filament (110), configured to emit LED filament light, comprising an array of a plurality of light emitting diodes (120), LEDs, configured to emit LED light, a carrier (130) arranged to support the plurality of LEDs, at least one heat sink (140) arranged in thermal connection with the carrier for a dissipation of heat from the plurality of LEDs during operation, wherein the at least one heat sink comprises a base portion (150) extending parallel to the carrier, and a plurality of fins (160) projecting from the base portion, and an encapsulant (170) comprising a translucent material, wherein the encapsulant at least partially encloses the plurality of LEDs, the carrier and the at least one heat sink.

Abstract: The invention provides a method for producing a 3D item (1) by means of fused deposition modelling using a fused deposition modeling 3D printer (500) comprising a printer nozzle (502), wherein the 3D item (1) comprises one or more layers (322) of 3D printed material (202), the method comprising a 3D printing stage comprising: —providing 3D printable material (201) to the printer nozzle (502), wherein: —the 3D printable material (201) comprises 3D printable core material (2101) and 3D printable first shell material (2201); —the 3D printable core material (2101) comprises a core thermoplastic material (2111) having a core thermoplastic material melting temperature Tmc1; —the 3D printable first shell material (2201) comprises a first shell thermoplastic material (2211) having a first shell thermoplastic material melting temperature Tms1; wherein Tmc1>Tms1; —the 3D printable first shell material (2201) has a 3D printable first shell material optical property, the 3D printable core material (2101) has a 3D prin

Abstract: Method for producing a 3D item (1) by means of fused deposition modelling, the method comprising a 3D printing stage comprising layer-wise depositing an extrudate (321) comprising 3D printable material (201), to provide the 3D item (1) comprising 3D printed material (202), wherein the 3D item (1) comprises a plurality of layers (322) of 3D printed material (202), wherein the 3D printing stage comprises: •—a vertical support providing stage comprising providing a first layer (1100) of 3D printed material (202), wherein the first layer (1100) has a first layer top part (1110) with a first layer top height (HI 1) relative to the substrate (1550) and a first layer bottom part (1120) with a first layer bottom height (H12) relative to the substrate (1550), wherein the first layer (1100) has a first layer height (HI) defined by the difference between the first layer top height (HI 1) and the first layer bottom height (H12), wherein the value of the first layer bottom height (H12) is at least equal to the value of th

Abstract: The invention provides amongst others a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), and a luminescent material (200), wherein: (A) the first light generating device (110) is configured to generate first device light (111); the second light generating device (120) is configured to generate second device light (121); wherein the first device light (111) and the second device light (121) have different spectral power distributions; (B) the luminescent material (200) is configured to convert at least part of one or more of the first device light (111) and the second device light (121) into luminescent material light (201); (C) the first light generating device (110) comprises a wavelength variable light generating device configured to generate in an operational mode of the light generating system (1000) first device light (111) changing between at least two centroid wavelengths (1) having a wavelength difference of at least 10 nm, with a

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 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 present invention generally relates to a lighting device (200) that comprises an optical component (100) for generating a beam shaping effect. The lighting device (200) further comprises a light source (201) and a light reflective component (114). The light source (201) is configured to provide a light source light and the light reflective component (114) is configured to at least partially reflect at least part of the light source light. The optical component (100) comprises a tubular body (101) having an outer surface (102), and an inner surface (103) opposite to the outer surface (102), the inner surface (102) at least in part forming a cavity (104). The tubular body (101) comprises a first end face (107) and a second end face (108) arranged opposite to the first end face (107).

Abstract: A method for 3D printing a 3D item (10), the method comprising (i) providing 3D printable material (201) comprising particles (410) embedded in the 3D printable material (201), wherein the particles (410) have a longest dimension length L1, a shortest dimension length L2, and an aspect ratio AR defined as the ratio of the longest dimension length L1 and the shortest dimension length L2, and (ii) depositing during a printing stage 3D printable material (201) to provide the 3D item (10) to provide layers (230) of the 3D printed material (202) with a layer height H, wherein AR>4 and H/L1<1.

Abstract: The invention provides a LED filament device (1000) configured to generate LED filament device light (1001), wherein the LED filament device (1000) comprises a LED filament (1100), wherein the LED filament (1100) comprises a plurality of light generating devices (100), each comprising a solid state light source (10), wherein the plurality of light generating devices (100) comprises a first set of n1 first light generating devices (110) configured to generate red first device light (111), a second set of n2 second light generating devices (120) configured to generate blue second device light (121), and a third set of n3 third light generating devices (130) configured to generate green third device light (131), wherein at least part of a total number n2 of the second light generating devices (120) of the second set are configured neighboring to first light generating devices (110) of the first set, wherein at least part of a total number n3 of the third light generating devices (130) of the third set are config

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 present invention generally relates to a lighting device (200) that comprises an optical component (100) for generating a beam shaping effect. The lighting device (200) further comprises a light source (201) and a light reflective component (114). The light source (201) is configured to provide a light source light and the light reflective component (114) is configured to at least partially reflect at least part of the light source light. The optical component (100) comprises a tubular body (101) having an outer surface (102), and an inner surface (103) opposite to the outer surface (102), the inner surface (102) at least in part forming a cavity (104). The tubular body (101) comprises a first end face (107) and a second end face (108) arranged opposite to the first end face (107).

Abstract: The invention provides a method comprising 3D printing a 3D item (1), the method comprising co-depositing during a printing stage 3D printable material (201) and an elongated solid fiber (310) with a fused deposition modeling 3D printer (500) via a single nozzle (502), to provide the 3D item (1) comprising 3D printed material (202) with the elongated solid fiber (310) embedded therein.