LED filament interconnection ring

Abstract

The present invention provides a light-generating device 100 comprising: (i) n filaments 200; (ii) a power distribution unit 400; and (iii) an electronics 500, wherein: (a) each of the n filaments 200 comprises one or more solid-state light sources 10, n≧1, each of the n filaments 200 comprises at least m electrical contacts 221, m≧2, and the n filaments 200 are configured to generate filament light 201; (b) the power distribution unit 400 comprises k conductive tracks 410 separated by an electrically insulating material 420, k≧2; (c) at least two of the electrical contacts 221 of the n filaments 200 are operatively coupled to at least two different conductive tracks 410; (d) the at least two different conductive tracks 410 are operatively coupled to the electronics 500; and (e) the electronics 500 comprises one or more of a control system, a driver, and a transformer.

Description

[Technical Field]

[0001] The present invention relates to a photogenerating device and a retrofit lamp equipped with such a photogenerating device. [Background technology]

[0002] LED filament lamps are known in the art. For example, U.S. Patent Application Publication 2018 / 0328543 describes a lamp comprising: a light-transmitting enclosure for emitting emitted light; a base connected to the enclosure; at least one first LED filament and at least one second LED filament within the enclosure, operable to emit light when energized via an electrical path from the base, wherein at least one first LED filament emits light having a first correlated color temperature (CCT) and at least one second LED filament emits light having a second CCT, and the two are combined to produce emitted light; and a controller for changing the CCT of the emitted light when the lamp is dimmed. The light-transmitting enclosure is transparent.

[0003] Incandescent lamps are rapidly being replaced by LED-based lighting solutions. Nevertheless, there are times when retrofit lamps with the appearance of incandescent bulbs are appreciated and desired by users. For this purpose, the infrastructure for manufacturing glass-based incandescent lamps may be utilized, and the filament may be replaced with an LED that emits white light. One such concept is based on an LED filament placed inside such a bulb. The appearance of these lamps is highly valued because it looks aesthetically pleasing. [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] Multi-channel LED filaments require the connection of multiple signals coming from the driver. These signals are typically transmitted via wires running through the filament lamp stem. Directly connecting these wires to the filament contacts can be problematic, especially when two or more filaments are used within the bulb.

[0005] Therefore, one aspect of the present invention is preferably to provide an alternative photogenerating device that further eliminates at least partially one or more of the aforementioned drawbacks. The present invention may also aim to overcome or improve upon at least one of the drawbacks of the prior art, or to provide a useful alternative. [Means for solving the problem]

[0006] In particular, the present invention provides, in its embodiments, an interconnection ring capable of distributing power and / or signals, but also provides units of other shapes. Furthermore, this may enable the connection of filaments in a useful and appropriate manner.

[0007] In a first embodiment, the present invention provides a photogenerating device comprising (i) n filaments and (ii) a power distribution unit. Furthermore, the photogenerating device may further comprise (iii) electronic equipment. In particular, in embodiments, each of the n filaments comprises one or more solid light sources. Furthermore, in certain embodiments, n ≥ 1. In embodiments, each of the n filaments comprises at least m electrical contacts. Furthermore, in certain embodiments, m ≥ 2. In particular, the n filaments are configured to generate filament light. Furthermore, in embodiments, the power distribution unit may comprise k conductive tracks separated by an electrical insulating material. Furthermore, in particular embodiments, k ≥ 2. Furthermore, in certain embodiments, at least two of the electrical contacts of the n filaments may be functionally coupled to at least two different conductive tracks (of the power distribution unit). Furthermore, in even more specific embodiments, at least two different conductive tracks may be functionally coupled to electronic equipment. In particular, in embodiments, the electronic equipment may comprise one or more of a control system, a driver, and a transformer. Therefore, in particular, the present invention provides a photogenerating device comprising (i) n filaments, (ii) a power distribution unit, and (iii) electronic equipment, wherein (a) each of the n filaments includes one or more solid light sources, n≧1, each of the n filaments includes at least m electrical contacts, m≧2, and the n filaments are configured to generate filament light, (b) the power distribution unit includes k conductive tracks separated by an electrical insulating material, k≧2, (c) at least two of the electrical contacts of the n filaments are functionally coupled to at least two different conductive tracks, (d) at least two different conductive tracks are functionally coupled to electronic equipment, and (e) the electronic equipment includes one or more of a control system, a driver, and a transformer.

[0008] The present invention may reduce or prevent problems associated with directly soldering electrical wires into the glass stem for mechanical support and electrical insulation, for example. The present invention can further provide more space for creating electrical connections and can also provide supports for filaments. The present invention can further enable an easier way to supply power and / or signals to multiple filaments, for example, to control multiple filaments individually or a set of filaments individually to control the color point and correlated color temperature (of the device light). Signal distribution may be easier than in prior art solutions. Therefore, the present invention can, in particular, provide a useful solution for multi-channel LED filament lamps. Furthermore, the present invention can provide a solution for providing an alternative location for an RF antenna. Moreover, the filaments may also help dissipate heat from the filaments and thus assist in cooling.

[0009] As described above, the present invention provides, in its embodiments, a photogenerating device comprising (i) n filaments and (ii) a power distribution unit.

[0010] As described above, each of the n filaments includes one or more solid light sources. Each filament may include a support and a solid light source supported by the support. In particular, in the embodiments, each filament includes multiple solid light sources, but this specification does not exclude the possibility that elongated solid light sources may be used. In particular, the filament may include a (light-transmitting) encapsulating material that can at least partially surround the solid light source, in particular, at least surround the light-emitting surface of the solid light source, such as a die.

[0011] The LED filament comprises a support, a set of solid light sources ("light sources"), and an encapsulation material. The LED filament may have a length axis having a first length (L1). In particular, the solid light sources are arranged on the support over the first length (L1) of the LED filament. Furthermore, the solid light sources are configured to generate light source light (during operation of the photogenerating device). In particular, in embodiments, the encapsulation material surrounds at least a portion of each of the solid light sources in the set of solid light sources. Generally, the filament may have at least 10 aspect ratios of length to width and aspect ratios of length to height, selected from, for example, a range of 10 to 10,000. The aspect ratios of different filaments may differ in certain embodiments, but in embodiments, the aspect ratios may be essentially the same. With respect to the filament, note that the aspect ratio of length to width and the aspect ratio of length to height may differ.

[0012] Furthermore, in embodiments, the encapsulation material may include a luminescent material configured to convert at least a portion of the light source light into luminescent material light. Alternatively or additionally, one or more of the one or more solid light sources may include a luminescent material, and the encapsulation material may be transparent or translucent in embodiments.

[0013] Alternatively or additionally, the solid-state light source may be configured to produce solid-state light without having any conversion material contained within the solid-state light source, i.e., the solid-state light source may have essentially the same spectral power distribution as that emanating from the die. Also, in such embodiments, the (optional) encapsulation material may be transparent or translucent in the embodiment.

[0014] Therefore, each of the n filaments may include one or more solid light sources, in particular multiple light sources, and each of the n filaments is configured to produce filament light (during the operating mode of the corresponding filament). The filament light may include one or more of luminescent material light and solid light source light (of solid light sources without luminescent material). The luminescent material light may be from a PC solid light source, i.e., a phosphor converter solid light source, or from luminescent material in the encapsulation material. Solid light sources without luminescent material may also be referred to herein as non-PC solid light sources or direct color LEDs.

[0015] The filaments are not necessarily identical. For example, there may be two or more filaments having different numbers of solid-state light sources. Alternatively or additionally, there may be two or more filaments having different shapes. Alternatively or additionally, there may be two or more filaments configured to produce filament light having different spectral power distributions. Alternatively or additionally, there may be two or more filaments having different spectral power distribution tunability.

[0016] Furthermore, there may be sets of filaments, each containing two or more filaments, where the number of solid light sources and the filament light spectral power distribution may be essentially identical, and the filaments within a set are (therefore) not essentially different from each other (with respect to the filament light spectral power distribution), while filaments from different sets may be different from each other (particularly in terms of the filament light spectral power distribution).

[0017] LED filaments in filament lamps can typically supply warm white light, i.e., light with a very low color temperature. The color temperature is typically below 2700K, such as 2500K or 2300K. Some LED filament lamps supply light with an ultra-low color temperature, such as 2200K or 2000K. Low color temperature sources appear yellowish or reddish, which is a desirable characteristic. Even lower color temperature thresholds (CCTs) may be possible (see also below). However, higher CCTs may also be possible (see also below).

[0018] As described above, the photogenerating device may include an LED filament, which comprises a support, a set of solid light sources, and an encapsulation material. The number of light sources in the set may be at least four, for example at least eight, more specifically at least twelve, for example up to 100, or even more. In particular, in the embodiment, the number of light sources in the set may be selected from a range of 10 to 1000, for example 10 to 200.

[0019] The term "light source" may refer to semiconductor light-emitting devices such as light-emitting diodes (LEDs), resonant cavity light-emitting diodes (RCLEDs), vertical cavity laser diodes (VCSELs), and end-face-emitting lasers. The term "light source" may also refer to organic light-emitting diodes such as passive-matrix organic light-emitting diodes (PMOLEDs) or active-matrix organic light-emitting diodes (AMOLEDs). In certain embodiments, the light source includes solid-state light sources (such as LEDs or laser diodes). In one embodiment, the light source includes LEDs (light-emitting diodes). The term LED may also refer to multiple LEDs. Furthermore, in embodiments, the term "light source" may also refer to so-called chip-on-board (COB) light sources. The term "COB" specifically refers to LED chips in the form of semiconductor chips that are directly mounted on a substrate such as a PCB without encapsulation or connection. Therefore, multiple semiconductor light sources may be configured on the same substrate. In embodiments, the COB is a multi-LED chip configured as a single lighting module. The term “light source” may also refer to multiple (essentially identical (or different)) light sources, such as 2 to 2000 solid light sources. In embodiments, the light source may include one or more micro-optical elements (arrays of microlenses) downstream of a single solid light source, or downstream of multiple solid light sources (i.e., shared by multiple LEDs), such as LEDs. In embodiments, the light source may include LEDs having on-chip optical elements. In embodiments, the light source includes a pixelated single LED (having or not having optical elements) (which, in embodiments, provide on-chip beam steering).

[0020] The terms "upstream" and "downstream" relate to the arrangement of an article or feature with respect to the propagation of light from a light generating means (in this specification, particularly a light source), such that, within the light beam from the light generating means, a second position closer to the light generating means than a first position within the light beam is "upstream", and a third position further away from the light generating means within the light beam is "downstream".

[0021] The term "parallel" may refer to being substantially parallel, or within + / - 10 degrees, more preferably within + / - 5 degrees from the elongation axis.

[0022] The term "conductive track" may refer to a track that is conductive and may be separated by an electrically insulating material. Examples of conductive tracks may be, for example, conductive wires (including copper and / or silver), or may be conductive patterns produced by techniques such as lithography and / or (screen) printing. For example, copper conductive tracks may be used.

[0023] The phrases "different light sources" or "a plurality of different light sources", and similar phrases, may in embodiments refer to a plurality of solid state light sources selected from at least two different bins. Similarly, the phrases "the same light source" or "a plurality of the same light sources", and similar phrases, may in embodiments refer to a plurality of solid state light sources selected from the same bin.

[0024] In this specification, in embodiments, the solid state light sources within a set are particularly essentially the same. Therefore, the solid state light sources within a set may, for example, be from the same bin. Therefore, in certain embodiments, the solid state light sources within a set may be configured to generate light source light having essentially the same color point and / or essentially the same dominant wavelength. In still other embodiments, the solid state light sources include a limited number of different light sources, for example up to about 5, for example up to about 4 different types of solid state light sources, more particularly up to about 3 different types of different solid state light sources. Therefore, in certain embodiments, the solid state light sources may be configured to generate light source light having different color points and / or dominant wavelengths.

[0025] In certain embodiments, the color points of the first type of light and the second type of light can be different in color or color point if they differ by at least 0.01 with respect to u', and / or at least 0.01 with respect to v', and more specifically, if they differ by at least 0.02 with respect to u', and / or at least 0.02 with respect to v'. In even more specific embodiments, the color points of the first type of light and the second type of light can differ by at least 0.03 with respect to u', and / or at least 0.03 with respect to v'. In other specific embodiments, the first type of light and the second type of light can be essentially the same in color or color point if their color points differ by at most 0.03 with respect to u', and / or at least 0.03 with respect to v', and more specifically, if they differ by at most 0.02 with respect to u', and / or at least 0.02 with respect to v'. In even more specific embodiments, the color points of the first type of light and the second type of light can differ by at most 0.01 with respect to u', and / or at least 0.01 with respect to v'. Here, u' and v' are the color coordinates of the light in the CIE 1976 UCS (uniform chromaticity scale) diagram.

[0026] As described above, in embodiments, n ≥ 1. However, in particular, n ≥ 2. In many of the embodiments discussed herein, 2 ≤ n ≤ 8, for example 2 ≤ n ≤ 6. However, larger values for n, such as up to 12 in some embodiments for example, are not excluded herein. For a single power distribution unit, values of n greater than about 6 are usually not possible. However, using, for example, 2 to 3 power distribution units is also not excluded herein. The light generating device includes at least one power distribution unit.

[0027] In particular, each of the n filaments contains at least m electrical contacts, where m ≥ 2. In particular, in embodiments, m = 2, however, m may also be greater. Each filament may contain an anode and a cathode. In particular, each filament has a cathode at one end of the filament and an anode at the other end of the filament. However, with respect to a single filament, m may also be greater than 2. In embodiments, with respect to a single filament, m may be 3 or 4. For example, if we consider a filament having two types of LEDs with different CCTs, or a filament having three colors such as RGB, there may be a common anode or cathode and, respectively, two or three contacts for the signals (high CCT or low CCT, or R, G, and B, respectively). For example, if we consider a 5-channel filament having RGB-WW-CW (WW and CW representing warm white and cool white, respectively), there may be six electrical contacts. Therefore, in the embodiment, the filament may include a single cathode and multiple anodes, or a single anode and multiple cathodes.

[0028] Therefore, in the embodiment, the number of electrical contacts may be the number of channels plus one. Thus, in the RGB-WW-CW 5-channel embodiment, the number of contacts may be 6. Furthermore, the number of channels may also define the number of conductive tracks. In particular, in the embodiment, the number of conductive tracks is at least equal to the number of channels.

[0029] As described above, in particular embodiments, each filament may include multiple solid light sources. In certain embodiments, at least two of the multiple solid light sources of each filament are configured in series. It is also possible to have two or three arrays, or even more arrays, of multiple solid light sources, each in series. In such embodiments, the filament may include three or more electrical contacts, depending on whether it is desirable, for example, to control the series solid light sources individually. For example, assuming kl1 series solid light sources, where kl1 ≥ 1, for example, up to kl1 * There may be kl1+1 contacts in 2. For example, if there is a shared electrode (or "common electrode") such as a common anode or common cathode, the number of contacts may be, for example, kl1+1. As mentioned above, if there is only one series connection, kl1=1, and there may be, for example, two contacts. See also below for further reference.

[0030] Such LED filaments are known and described, for example, in U.S. Patent No. 8,400,051(B2), International Publication No. 2020016058, and International Publication No. 2019197394, which are incorporated herein by reference.

[0031] In some embodiments, one or more filaments, in particular all of them, may have a substantially linear shape. In yet another embodiment, one or more filaments, in particular all of them, may have a curved shape. In yet another embodiment, one or more filaments, in particular all of them, may have a spiral shape. In yet another embodiment, one or more filaments, in particular all of them, may have a helical shape. If two or more filaments have a spiral or helical shape, in some embodiments, two of them may have a similarly configured winding. Other shapes of filaments are also possible, such as having distinctive shapes like letters, numbers, flowers, leaves, or other shapes.

[0032] In particular, the present invention provides a power distribution unit, which may also be referred to as a "power and signal distribution unit". In an embodiment, the power distribution unit includes k conductive tracks (the "tracks") separated by an electrically insulating material. The power distribution unit may be regarded as a kind of multi-track system, and the contact of the filament is allocated to one (generally only one) of the tracks. In particular, the power distribution unit may include at least two tracks. Therefore, in an embodiment, k≥2. Specific embodiments of the power distribution unit are further described below.

[0033] In some embodiments, the number of k tracks may be equal to the number of filaments. Therefore, each filament may be functionally coupled to a track. In still other embodiments, a set of two or more filaments is functionally coupled to a track. In such embodiments, k < n. However, as further described below, embodiments in which the conductive trap may also be used as an antenna are also described herein. In a specific embodiment, k may be at least the number of individually controlled series solid light sources. Therefore, in an embodiment, at least two of the electrical contacts of the n filaments may be functionally coupled to at least two different conductive tracks. In particular, one of the electrical contacts of each filament is functionally coupled to one of the conductive tracks.

[0034] Furthermore, in embodiments, the photogenerating device may further include electronic equipment. In embodiments, the electronic equipment includes one or more of a control system, a driver, and a transformer. Thus, the electronic equipment may supply power and / or signals to the corresponding filament or set of filaments. A power distribution unit may have some kind of intermediate function and the power distribution unit is functionally coupled to the electronic equipment and the filament. Or, in other words, the electronic equipment may be functionally coupled to the filament via a power distribution unit. Thus, in particular, at least two different conductive tracks may be functionally coupled to the electronic equipment. The electronic equipment may be enclosed by a PCB or supported by a PCB.

[0035] Functional coupling may be provided by methods known in the art, such as soldering or welding. Optionally, other connectors, such as those based on friction or crimping, may be used.

[0036] The power distribution unit may be configured (physically) between the filament and the electronic equipment. For example, at least a portion of the electronic equipment may be functionally coupled to a printed circuit board (PCB). The power distribution unit may be configured at a distance of at least about 1 mm, for example, at least about 2 mm, from the PCB. In embodiments, the power distribution unit may be configured parallel to the PCB. In embodiments, the PCB may have, for example, a circular shape.

[0037] In certain embodiments, the power distribution unit may have a ring shape. In particular, the ring shape may be a closed ring shape, such as a circle, rectangle, hexagon, octagon, or other type of polygon having nine or more sides. In other embodiments, the power distribution unit may have an open ring shape, such as a kind of C shape, or any of the aforementioned shapes that are not completely closed. In particular embodiments, the power distribution unit has a ring shape that is closed by at least 270°, for example, in an embodiment a ring shape that is closed by 360° (a complete ring shape). Since the present invention provides a ring-shaped power distribution unit in an embodiment, the present invention provides a kind of interconnection ring in a certain embodiment. When the ring is closed, in a certain embodiment to which a first support structure is applied, the ring may surround the first support structure in a circumferential direction.

[0038] As stated above, this specification does not exclude the possibility that the photogenerating device comprises two or more power distribution units. In such embodiments, the first power distribution unit may be physically configured between the second power distribution unit and the electronic device. When two or more power distribution units are applied, the different power distribution units may have, for example, different inner and outer diameters. However, it should be noted that the present invention is not limited to ring-shaped power distribution units.

[0039] In some embodiments, the power distribution unit may include one or more, particularly two or more, conductive tracks. In particular, the conductive tracks may be configured parallel to each other. The power distribution unit may have a length or circumference greater than the length of the corresponding tracks. However, in other embodiments, the length of the corresponding tracks may be in the range of 70-100% of the length or circumference of the power distribution unit. If each of the corresponding tracks has a length in the range of 70-100% of the length or circumference of the power distribution unit, this further allows for a simpler way of supplying power and / or signals to multiple filaments, enabling individual control of multiple filaments or individual control of sets of filaments.

[0040] The power distribution unit may have a (maximum) height of approximately 0.5 to 20 mm, for example 1 to 10 mm, or for example 1 to 5 mm. Furthermore, the power distribution unit may have a (maximum) thickness of approximately 0.1 to 15 mm, for example 0.2 to 10 mm. Moreover, the power distribution unit may each have a (minimum) inner diameter and a (maximum) outer diameter of approximately 2 to 80 mm, where the outer diameter is larger than the inner diameter (approximately equal to the thickness).

[0041] For example, in one embodiment, the power distribution unit may have a triangular cross-sectional shape and have conductive tracks at its edges separated by an electrically insulating material. This makes it possible to provide, for example, three different conductive tracks. For example, in another embodiment, the power distribution unit may have a rectangular cross-sectional shape and have conductive tracks at its edges separated by an electrically insulating material. This makes it possible to provide, for example, four different conductive tracks. For example, in yet another embodiment, the power distribution unit may have a hexagonal cross-sectional shape and have conductive tracks at its edges separated by an electrically insulating material. This makes it possible to provide, for example, six different conductive tracks. However, other shapes are also possible.

[0042] In embodiments, the electrical insulating material includes a polymer material. Alternatively or additionally, the electrical insulating material includes one or more of glass materials, composite materials, and ceramic materials. Other nonmetallic materials may also be applied as electrical insulating materials. For example, the electrical insulating material may be selected from the group consisting of PET, PE, PC, PP, Al2O3, and glass, but other materials such as flexfoil may also be applied in embodiments.

[0043] For example, in one embodiment, the power distribution unit may be provided by 2K molding of a conductive material and an electrically insulating material. In yet another embodiment, the power distribution unit may be provided by overmolding using a conductive insert and an electrically insulating (base) material. In yet another embodiment, the power distribution unit may be provided by printing conductive tracks on a glass or ceramic body. In yet another embodiment, the power distribution unit may be provided by depositing conductive tracks on a support such as a polymer body, a glass body, or a ceramic body. In particular, the electrically insulating material may be configured as a support for the conductive tracks. The conductive tracks include a conductive material. The conductive material may include, for example, one or more of copper and silver, particularly copper.

[0044] Conductive elements such as conductive tracks and / or electrical contacts may include a conductive material or may consist essentially of a conductive material. Electrical insulating elements may include an electrical insulating material or may consist essentially of an electrical insulating material. In this specification, in the embodiments, the conductive material is particularly at least 1.10 5 S / m, for example, at least 1.10 6 It may have an electrical conductivity of S / m (at room temperature). In this specification, the electrical conductivity of the insulating material is particularly specified as 1·10 -10 S / m or less, especially 1 / 10 -13 It may be less than or equal to S / m. In this specification, the ratio of the conductivity of the insulating material (insulator) to the conductivity of the conductive material (conductor) is particularly 1.10 -15 It may be selected to be less than . Conductive contact may refer to (physical) contact between two (or more) conductive elements, such as two conductive layers. In such embodiments, the conductivity of the arrangement of the two conductive elements, measured across the two conductive elements, is at least 1.10 6When it is S / m, there is a conductive contact. The conductive contact may also, in certain embodiments, refer to the arrangement of two (or more) conductive elements having a medium therebetween. In such embodiments, the conductivity of the arrangement of the two conductive elements measured across the two conductive elements having a medium therebetween is at least 1·10 6 When it is also S / m, there is a conductive contact. In certain embodiments, the resistivity of the dielectric layer may be at least about 1 MOhm * cm.

[0045] In particular, in embodiments, the insulating material may be either reflective or light transmissive.

[0046] The filament lamp may also include a support for the filament. Such a support may have the shape of a glass stem, or may have the appearance of a glass stem, as in a classical electric bulb. With respect to the length of the light generating device, in embodiments, such a support may be configured parallel to the length of the light generating device. The power distribution unit mentioned above may, for example, in embodiments, be configured perpendicular to such a support.

[0047] This support structure is referred to herein as the “first support structure.” Therefore, in embodiments, the photogenerating device may further comprise the first support structure. In particular, the first support structure may be configured to support n filaments. For example, at one end, the filaments may be functionally coupled to the first support structure. As described above, the power distribution unit may also be configured to support filaments in embodiments. Therefore, in certain embodiments, one or more of the power distribution unit and the first support structure are configured to support n filaments. More specifically, in embodiments, both the power distribution unit and the first support structure may be configured to support n filaments. For example, at one end, the filaments may be functionally coupled to the first support structure, and at the other end, the filaments may be functionally coupled to the power distribution unit. Here, the term “support” may mean, for example, holding in a predetermined position.

[0048] In certain embodiments, the first support structure may include a hollow glass body. In yet another embodiment, the first support structure may include a hollow ceramic body. In yet another embodiment, the first support structure may include a hollow quartz body. In yet another embodiment, the first support structure may include a hollow polymer body. In yet another embodiment, the first support structure may include a solid body. Materials other than glass, ceramic, quartz, and polymer may also be used. In particular, in embodiments, the first support structure is light-transmitting, such as being transparent to light (of the filament).

[0049] In particular, the first support structure itself may be electrically insulating, but in some embodiments, the first support structure may support one or more conductive tracks.

[0050] In particular, in the embodiment, the first support structure may have a length greater than or equal to the effective length of the filament.

[0051] The photogenerating device may generally include a light-transmitting enclosure ("spherical portion"), such as a light-transparent enclosure, or, in embodiment, a glass enclosure. The enclosure may at least partially, and more specifically substantially, surround one or more filaments. The light-transmitting enclosure may have an enclosure height (as defined, for example, by standard shapes B35, A60, ST63, G90, etc.). The first support structure may have a length of at least 20%, and, in embodiment, up to about 80%, of the height of the light-transmitting enclosure. In particular, the enclosure is transparent to (visible) light.

[0052] In certain embodiments, the power distribution unit surrounds the first support structure at least partially in the circumferential direction. As described above, the power distribution unit mentioned above may, for example, be configured perpendicular to such support in certain embodiments.

[0053] In this embodiment, the PCB may also be functionally coupled to the first support structure.

[0054] The first support structure may also be configured to house or support a conductor. For example, an electrical circuit may be provided that runs from the PCB through a power distribution unit to a filament and back to the PCB through a conductor housed or supported by the first support structure.

[0055] The conductor may include one or more of an electrical wire and a conductive track. For example, in the embodiment, the conductor may include a leadthrough which may be housed by a first support element.

[0056] In this specification, the term “housing” may particularly refer to a hollow first support element, which may be composed of, for example, one or more conductors passing through it.

[0057] As can be derived from the above, in the embodiment, n ≥ 2. Furthermore, the electrical contacts include a first electrical contact and a second electrical contact, the first electrical contact of the filament being functionally coupled to a different conductive track (in the embodiment), and the second electrical contact of the filament being functionally coupled to an electronic device. The latter functional coupling may be provided in different ways.

[0058] In some embodiments, the functional coupling between the second electrical contact of the filament and the electronic equipment may be provided via a plurality of conductors (see also above) housed or supported by the first support structure.

[0059] Alternatively, the second electrical contact of the filament may be functionally coupled to a different conductive track, although it is on the same conductive track as the first electrical contact, but to a different conductive track than the one to which the first electrical contact is functionally coupled. In this way, there may be a shared electrode to which the second electrical contact can be functionally coupled.

[0060] Alternatively, such a shared electrode may be housed or supported by a first support element. Therefore, in certain embodiments, the second electrical contact of the filament may be functionally coupled to an external shared electrode of the power distribution unit, such as a conductor housed or supported by the first support element.

[0061] Therefore, in particular, n≧2, the electrical contacts include a first electrical contact and a second electrical contact, the first electrical contact of the filament being functionally coupled to a different conductive track, and the second electrical contact of the filament being functionally coupled to (a) the same conductive track but a different conductive track from the different conductive track to which the first electrical contact is functionally coupled, or (b) a shared electrode outside the power distribution unit. In particular, in particular, the shared electrode may be functionally coupled to electronic equipment via a conductive connection within the first support structure. The term “conductive connection” may refer to a conductor, such as an electrical wire or a conductive track.

[0062] In particular, in the embodiment, there are at least two conductive tracks and at least two filaments, each functionally coupled to a different conductive track. Furthermore, at least two filaments may be functionally coupled to an electronic device via one or more conductive connectors housed or supported by a first support structure. In this way, at least two of the filaments may be controlled individually. This may enable, for example, color adjustment or correlated color temperature adjustment (see also below). Therefore, in the embodiment, k≧2 and n≧2, and the electronic device may be configured to individually control at least two sets of at least one filament each.

[0063] Furthermore, as mentioned above, each of the filaments may contain multiple solid-state light sources.

[0064] In certain embodiments, at least two of the conductive tracks are configured as anodes. Such embodiments may be combined, for example, with a shared cathode for the filament. As described above, the shared cathode may be housed or supported, for example, by a first support element.

[0065] If there are at least two filaments functionally connected to the power distribution unit, they may be functionally connected to different conductive tracks. The conductive tracks may, in particular, have different positions with respect to the device axis of the photogenerating device. This may mean that at least two filaments may have (slightly) different angles with respect to the device axis of the photogenerating device. Therefore, in embodiments, the photogenerating device has a first extension axis (or length axis or device axis), and each of the n filaments has a second extension axis (or length axis), and at least two of the second extension axes (A2) have different second angles β with respect to the first extension axis (A1).

[0066] If there are at least two filaments functionally connected to the power distribution unit, they may divide the space evenly. For example, if there are two filaments, they may be configured opposite each other with respect to the device axis. For example, if there are three filaments, they may be configured in a triangular pattern or the like with equal relative angles.

[0067] Therefore, in certain embodiments, the extension axis of each filament may be configured in a plane intersecting the device axes, and the plane has a first mutual angle α selected from the range of 15 to 180°. For example, in the case of n filaments, the first mutual angle may be 360° / n in an embodiment. However, the filaments are not necessarily evenly distributed.

[0068] Therefore, in a particular embodiment, the n filaments may include a first filament and a second filament, the first filament being mechanically and electrically connected to a first conductive track of at least two different conductive tracks, the second filament being mechanically and electrically connected to a second conductive track of at least two different conductive tracks, the extension axis of each filament being configured in a plane intersecting the device axis, the plane having a first mutual angle α selected from the range of 15 to 180°, the photogenerating device having a first extension axis (A1), and each of the n filaments individually having a second extension axis (A2), at least two of the second extension axes (A2) having different second angles β with respect to the first extension axis (A1).

[0069] In certain embodiments, 3 ≤ k ≤ 6 and n ≥ 3. In even more specific embodiments, 3 ≤ k ≤ 6 and 3 ≤ n ≤ 6, where n = k. However, in other embodiments, 3 ≤ k ≤ 6 and n = 2 * k or 3 * It is k.

[0070] In the presence of multiple light sources (or sets thereof), in the embodiment, it may be possible to control the spectral power distribution of the device light. The device light may essentially consist of light from one or more filaments out of n filaments (during operation).

[0071] As described above, the filament may include two or more arrays of light sources, and these arrays may be controlled individually. Alternatively or additionally, two or more filaments may be controlled alternatively.

[0072] Therefore, in the embodiment, one or more of the color point and correlated color temperature of the device light may be controllable. In particular, the device light essentially consists of filament light.

[0073] For example, the device light may have controllable color points where two or more color points (in different operating modes) have a color point difference of at least 0.03 with respect to u' and / or at least 0.03 with respect to v'. Alternatively or additionally, the device light may have controllable color points where two or more spectral power distributions (in different operating modes) have different centroid wavelengths that differ from each other by at least 10 nm. In certain embodiments, at least two spectral power distributions of the device light (in at least two corresponding operating modes) may have centroid wavelengths that differ by at least 10 nm, e.g., at least 20 nm, or further by at least 30 nm, e.g., a difference selected from the range of 30 to 200 nm.

[0074] The term "centroid wavelength," also denoted as λc, is known in the art and refers to the wavelength value at which half of the light energy is at shorter wavelengths and half of the energy is at longer wavelengths. The value is expressed in nanometers (nm). The centroid wavelength is given by the formula λc = Σλ *The centroid wavelength is the wavelength that divides the integral of the spectral power distribution into two equal parts, expressed as I(λ) / (ΣI(λ)), where the summation is over the wavelength range of interest, and I(λ) is the spectral energy density (i.e., the integral of the product of wavelength and intensity over the emission band, normalized to the integral intensity). The centroid wavelength may be determined, for example, in the operating state.

[0075] The term “controlling” and similar terms particularly refer to determining the behavior of an element or managing the operation of an element. Therefore, in this specification, “controlling” and similar terms may refer, for example, to imposing behaviors on an element, such as measuring, displaying, operating, opening, transitioning, changing temperature, etc. (determining the behavior of an element or managing the operation of an element). Furthermore, the term “controlling” and similar terms may further include monitoring. Therefore, the term “controlling” and similar terms may include imposing behaviors on an element, and also imposing behaviors on an element and monitoring said element. Controlling an element can be done by a control system, which may also be referred to as a “controller.” Therefore, the control system and the element may be functionally coupled, at least temporarily or permanently. The element may include a control system. In embodiments, the control system and the element do not need to be physically coupled. Control can be performed via wired control and / or wireless control. The term "control system" may also refer to several different control systems that are functionally coupled, where, for example, one control system may be a master control system and one or more other control systems may be slave control systems. A control system may include a user interface, or may be functionally coupled to a user interface.

[0076] The control system may also be configured to receive and execute commands from a remote controller. In embodiments, the control system may be controlled via an app on a portable device such as a smartphone or iPhone, tablet, etc. Therefore, the device is not necessarily coupled to the lighting system, but may be functionally coupled to the lighting system (temporarily).

[0077] Therefore, in embodiments, the control system may also be configured to be controlled by an app on a remote device. In such embodiments, the control system of the lighting system may be a slave control system or may be controlled in slave mode. For example, the lighting system may be identifiable by a code, in particular a unique code relating to the corresponding lighting system. The control system of the lighting system may be configured to be controlled by an external control system that has access to the lighting system based on knowledge of the (unique) code (input by the user interface of an optical sensor (e.g., a QR code reader)). The lighting system may also include means for communicating with other systems or devices based on Bluetooth, WIFI, LiFi, ZigBee, BLE, or WiMAX, or other wireless technology.

[0078] A system, apparatus, or device may perform an action in a certain “mode” or “operation mode” or “operational mode.” Similarly, in a method, an action, or a step or phase may be performed in a certain “mode” or “operation mode” or “operational mode.” The term “mode” may also be expressed as “control mode.” This does not preclude a system, apparatus, or device from being adapted to provide another control mode, or more other control modes. Similarly, this does not preclude one or more other modes from being performed before and / or after a mode has been performed.

[0079] However, in embodiments, a control system adapted to provide at least one control mode may be available. If other modes are available, the selection of such modes may be performed in particular via a user interface, but other options may also be possible, such as performing a mode in response to a sensor signal or a (time) scheme. In embodiments, an operating mode may also refer to a system, apparatus, or device that can operate only in a single operating mode (i.e., "on" with no further adjustability).

[0080] Therefore, in embodiments, the control system may be controlled in response to one or more of the input signals of the user interface, sensor signals (of sensors), and timers. The term “timer” may refer to a clock and / or a predetermined time scheme.

[0081] In particular, in embodiments, at least two sets of solid light sources may be configured to produce (solid light source) light having different spectral power distributions. For example, in embodiments, at least two sets may be configured to supply (solid light source) light having (i) different correlated color temperatures having a difference of at least 500K, or (ii) different colors having a color point difference of at least 0.03 with respect to u' and / or at least 0.03 with respect to v'. In particular, electronic equipment may be configured to control at least two sets of solid light sources in response to one or more of, for example, user interface input signals, sensor signals, and timers. For example, two or more sets may be configured to produce (solid light source) light having different colors selected from violet, cyan, blue, green, yellow, orange, red, or other colors as an option.

[0082] However, in certain embodiments, at least two of the n filaments may be configured to produce filament light having different spectral power distributions. For example, in embodiments, at least two of the n filaments may be configured to produce filament light having (i) different correlated color temperatures with a difference of at least 500 K, or (ii) different colors with a color point difference of at least 0.03 with respect to u' and / or at least 0.03 with respect to v'. In particular, the electronic device may be configured to control at least two of the n filaments in response to one or more of a user interface input signal, a sensor signal, and a timer, for example, in embodiments. For example, two or more filaments may be configured to produce filament light having different colors selected from purple, cyan, blue, green, yellow, orange, red, or other colors as an option.

[0083] In the embodiment, at least two different types of light are spectral power distributions of white light, but may have at least two spectral power distributions that differ in correlated color temperature by, for example, at least 500K.

[0084] In particular, in the embodiment, one of the types of light has a spectral power distribution with a correlated color temperature selected from the range of 1800 to 2700 K, for example, in the range of 1900 to 2400 K. However, other ranges, such as the range of 1800 to 6500 K, may also be possible. In particular, if the CCT value of the device light is variable, the maximum difference in CCT is at least 500 K.

[0085] The term "white light" as used herein is known to those skilled in the art. White light refers particularly to light having a correlated color temperature (CCT) in the range of about 1800 to 20000K, and especially about 2700K to 6500K for general illumination, such as 2000 to 20000K, and especially 2700 to 20000K. In embodiments, for backlighting purposes, the correlated color temperature (CCT) may be in the range of about 7000K to 20000K. Furthermore, in embodiments, the correlated color temperature (CCT) is particularly within about 15 SDCM (standard deviation of color matching) from the black body locus (BBL), particularly within about 10 SDCM from the BBL, and more specifically within about 5 SDCM from the BBL.

[0086] The terms “visible,” “visible light,” or “visible emission,” and similar terms refer to light having one or more wavelengths in the range of approximately 380–780 nm. In this specification, UV may specifically refer to wavelengths selected from the range of 200–380 nm.

[0087] The terms “light” and “radiation” are used interchangeably herein unless the context makes it clear that the term “light” refers only to visible light. Therefore, the terms “light” and “radiation” may refer to UV radiation, visible light, and IR radiation. In certain embodiments, particularly relating to lighting applications, the terms “light” and “radiation” refer to (at least) visible light.

[0088] The term "violet light" or "violet emission" specifically refers to light having wavelengths in the range of approximately 380–440 nm. The term "blue light" or "blue emission" specifically refers to light having wavelengths in the range of approximately 440–490 nm (including some violet and cyan hues). The term "green light" or "green emission" specifically refers to light having wavelengths in the range of approximately 490–560 nm. The term "yellow light" or "yellow emission" specifically refers to light having wavelengths in the range of approximately 560–590 nm. The term "orange light" or "orange emission" specifically refers to light having wavelengths in the range of approximately 590–620 nm. The term "red light" or "red emission" specifically refers to light having wavelengths in the range of approximately 620–750 nm. The term "cyan" may refer to one or more wavelengths selected from the range of approximately 490–520 nm. The term "amber" can refer to one or more wavelengths selected from the range of approximately 585-605 nm, for example, approximately 590-600 nm.

[0089] As described above, one (or more) of the conductive tracks may be configured as an antenna. Such a conductive track is not functionally coupled to one of the filaments but may be functionally coupled to an electronic device, in particular a WiFi-based wireless device, a Zigbee-based device, or a Bluetooth-based device. In particular, the antenna may be available if there are also at least two available tracks that are functionally coupled to one or more filaments. Therefore, in certain embodiments, k ≥ 3 and at least one of the conductive tracks is configured as an antenna.

[0090] In certain embodiments, two tracks may be configured as a cathode and an anode with respect to the same filament. Therefore, in embodiments where k is at least 2, such as k=2, one of the conductive tracks may be configured as an anode and the other conductive track may be configured as a cathode.

[0091] In further embodiments, the present invention also provides a photogenerating device as defined herein, which is a retrofit lamp. In further embodiments, the present invention also provides a lamp or luminaire comprising a photogenerating device as defined herein. The luminaire may further comprise a housing, optical elements, louvers, etc. The lamp or luminaire may further comprise a housing surrounding the photogenerating device. The lamp or luminaire may have light windows or housing openings within the housing, through which system light may exit the housing.

[0092] In one embodiment, the power distribution unit does not include a (solid) light source.

[0093] In one embodiment, n filaments are n LED filaments.

[0094] In one embodiment, in a cross-sectional view, the power distribution unit includes k conductive tracks separated by an electrically insulating material, where k ≥ 2, or k ≥ 2, or further k ≥ 4. Preferably, the k conductive tracks may be located in different parts of the power distribution unit and / or may be evenly distributed over the outer periphery of the power distribution unit. [Brief explanation of the drawing]

[0095] Herein, embodiments of the present invention are described only by reference to the accompanying schematic drawings, in which corresponding reference symbols indicate corresponding parts. [Figure 1a] One embodiment and several aspects are schematically shown. [Figure 1b] One embodiment and several aspects are schematically shown. [Figure 2a] Several embodiments are schematically shown. [Figure 2b] Several embodiments are schematically shown. [Figure 2c] Several embodiments are schematically shown. [Figure 2d]Several embodiments are schematically shown. [Figure 2e] Several embodiments are schematically shown. [Figure 2f] Several embodiments are schematically shown. [Figure 3a] Several embodiments and variations are schematically shown. [Figure 3b] Several embodiments and variations are schematically shown. [Figure 3c] Several embodiments and variations are schematically shown. [Figure 3d] Several embodiments and variations are schematically shown. [Figure 3e] Several embodiments and variations are schematically shown. [Figure 4] Another embodiment is shown.

[0096] The schematic drawing is not necessarily to the correct scale. [Modes for carrying out the invention]

[0097] Figure 1a schematically shows one embodiment of a photogenerating device 100 comprising n filaments 200, a power distribution unit 400, and electronic equipment 500. Figure 1a schematically shows the cross-sectional shape. Each of the n filaments 200 contains one or more solid light sources 10, in particular n≧1; here, n=2. Each of the n filaments 200 contains at least m electrical contacts 221, in particular m≧2; here, m=2. The n filaments 200 are configured to generate filament light 201 (during operation).

[0098] The power distribution unit 400 includes k conductive tracks 410 (see, in particular, Figure 1b) separated by an electrical insulating material 420. In the embodiment of Figure 1a, for example, k ≥ 2. For understanding, the different conductive tracks 410 are indicated by reference numerals 411 and 412, respectively.

[0099] At least two of the n electrical contacts 221 of the filaments 200 may be functionally coupled to at least two different conductive tracks. At least two different conductive tracks may be functionally coupled to the electronic device 500.

[0100] In particular, the electronic equipment 500 may include one or more of the following: a control system, a driver, and a transformer.

[0101] Reference numeral 600 indicates a light-transmitting enclosure. Reference numeral 170 indicates a screw-in cap or Edison (screw-in) cap. In this embodiment, the power distribution unit 400 has a ring shape. Reference numeral H indicates the height of the light-transmitting enclosure 600.

[0102] The photogenerating device 100 may further include a first support structure 120. One or more of the power distribution unit 400 and the first support structure 120 may be configured to support n filaments 200. The power distribution unit 400 surrounds the first support structure 120 at least partially in the circumferential direction. In embodiments, the first support structure 120 may include a hollow glass body. Reference numeral H1 indicates the height of the first support structure 120.

[0103] As described above, in the embodiment, n≧2. In the embodiment, k≧2 and n≧2.

[0104] In this embodiment, the electrical contact 221 includes a first electrical contact 2211 and a second electrical contact 2212. The first electrical contact 2211 of the filament 200 may be functionally coupled to a different conductive track. The second electrical contact 2212 of the filament 200 may be functionally coupled (i) to a different conductive track than the different conductive track 410 to which the first electrical contact 2211 is functionally coupled, or (ii) to a shared electrode 132 outside the power distribution unit 400.

[0105] In this embodiment, each filament 200 may include a plurality of solid-state light sources 10.

[0106] The shared electrode 132 may be functionally coupled to the electronic device 500 via a conductive connection within the support structure.

[0107] In this embodiment, the electronic device 500 may be configured to individually control at least two sets of at least one filament 200 each. In particular, each of the filaments 200 includes a plurality of solid-state light sources 10.

[0108] The photogenerating device 100 has a first extension axis A1, and each of the n filaments 200 has a second extension axis A2, and at least two of the second extension axes A2 have different second angles β with respect to the first extension axis A1. The respective second angles β with respect to each filament 200 are indicated by reference numerals β1 and β2. Note that these angles may differ slightly in the schematicly shown embodiments.

[0109] Figure 1b schematically shows a cross-section of a possible power distribution unit 400. Embodiment I shows two conductive tracks 410 and an electrical insulating material 420. Embodiment II shows three conductive tracks 410 and an electrical insulating material 420. Embodiment III shows four conductive tracks 410 and an electrical insulating material 420. However, other embodiments may also be possible. Different conductive tracks 410 are indicated by reference numerals 411, 412, 413, and 414, respectively. In embodiments, the electrical insulating material 420 may include a polymer material. In embodiments, the electrical insulating material 420 includes one or more of glass materials, composite materials, and ceramic materials. In particular, in embodiments, at least two of the conductive tracks 410 are configured as anodes. In embodiments, at least one of the conductive tracks 410 is configured as an antenna. In particular, this may apply in embodiments where k≧3.

[0110] Referring to Figures 1a and 1b (and also to some embodiments shown in Figures 2a to 2f, for example), the n filaments 200 may include a first filament 210 and a second filament 220. The first filament 210 is mechanically and electrically connected to a first conductive track 411 of at least two different conductive tracks 410. The second filament 220 is mechanically and electrically connected to a second conductive track 412 of at least two different conductive tracks 410.

[0111] In this embodiment, at least two of the n filaments 200 are configured to generate filament light 201 having different spectral power distributions.

[0112] In the embodiment, at least two of the n filaments 200 are configured to produce filament light 201 having (i) different correlated color temperatures having a difference of at least 500K, or (ii) different colors having a color point difference of at least 0.03 with respect to u' and / or at least 0.03 with respect to v'.

[0113] In this embodiment, the electronic device 500 may be configured to control at least two of the n filaments 200 in response to one or more of the input signals of a user interface, sensor signals, and timers.

[0114] In certain embodiments, 3 ≤ k ≤ 6 and n ≥ 3. Furthermore, in certain embodiments, k = 2, one of the conductive tracks 410 is configured as an anode, and another of the conductive tracks 410 is configured as a cathode.

[0115] Referring to Figure 2a, n=6 and k=2. Note that there are two sets, each consisting of three filaments 200. The filaments have a shared electrode on one end, which may be connected to electronic equipment (not shown) via a first support structure 120.

[0116] Figure 2b schematically shows one embodiment of a helical filament 200. This filament 200 includes two solid-state light sources in series. Therefore, in this embodiment, the power distribution unit 400 may have two conductive tracks 410.

[0117] Figure 2c schematically shows one embodiment of two double-helix filaments 200. Each of these filaments 200 contains a single series solid-state light source. Therefore, in this embodiment as well, the power distribution unit 400 may have two conductive tracks 410.

[0118] Figure 2d schematically shows one embodiment of two sets, each containing two (curved) filaments 200. Each of these filaments 200 contains a single series solid-state light source. Therefore, in this embodiment as well, the power distribution unit 400 may have two conductive tracks 410. The filaments 200 in each set are functionally coupled to the same conductive track 410.

[0119] Figure 2e schematically shows one embodiment of a helical filament 200. This filament 200 includes three solid-state light sources in series. Therefore, in this embodiment, the power distribution unit 400 may have three conductive tracks 410.

[0120] Figure 2f schematically shows one embodiment of four (curved) filaments 200. Each of these filaments 200 contains a single series solid-state light source. Therefore, in this embodiment, the power distribution unit 400 may have four conductive tracks 410.

[0121] Figures 3a to 3f schematically show several embodiments.

[0122] Figure 3a is a schematic cross-sectional view illustrating that the angle β of the filament 200 with respect to the device axis A1 may vary slightly. Here, the values ​​for the two angles β may therefore differ.

[0123] Referring to Figure 3b, one embodiment is shown in which the extension axis A2 of each filament 200 is located in a plane intersecting the device axis A1. The plane has a first mutual angle α selected from the range of 15 to 180°. Figure 3b is a top view of one embodiment.

[0124] Figure 3c schematically shows two embodiments, each having a single filament but comprising three (Embodiment I) or two (Embodiment II) series solid-state light sources 10. In these embodiments, these series connections may be controlled individually. In Embodiment I, kl1 = 3, and in Embodiment II, kl1 = 2.

[0125] Figure 3d schematically shows one embodiment of the LED filament 200. The LED filament 200 includes a support 105, a set 107 of solid light sources 10, and an encapsulation material 60. The LED filament 200 has a length axis 108 having a first length L1. The solid light sources 10 are arranged on the support 105 along the first length L1 of the LED filament 200. The solid light sources 10 are configured to produce light source light 11. In this embodiment, the solid light sources 10 may be configured to produce blue light source light 11. The encapsulation material 60 surrounds at least a portion of each of the solid light sources 10 in the set 107. The encapsulation material 60 includes a luminescent material 210 configured to convert at least a portion of the light source light 11 into luminescent material light 211. In embodiments, the luminescent material 210 may be configured to convert at least a portion of the light source 11, particularly in combination with the blue light source 11, into luminescent material light 211 having one or more wavelengths of (i) green and / or red, and (ii) yellow and optionally red. Therefore, the luminescent material may be configured to produce yellow and / or red light by converting at least a portion of the blue light. The luminescent material may also be configured to produce green and / or red light by converting at least a portion of the blue light. As described above, the term “luminescent material” may also refer to several different luminescent materials. In particular, the luminescent material may include the garnet luminescent material described above. Reference numeral 15 indicates the light-emitting surface of the solid light source 10, such as an LED die. The solid light source 10 may be available on a substrate or support 105. Furthermore, the solid light source 10 (and the substrate 105) may be embedded in a light-transmitting material, such as a resin. A light-transmitting material surrounding the light source is indicated by reference numeral 145. In particular, the light-transmitting material may contain a luminescent material 210, such as by embedding it. Specifically, this light-transmitting material 145 may be a resin that accepts a luminescent material 210, such as an inorganic luminescent material, within an organic resin. The resin may be, for example, an acrylic resin, a silicone resin, or an epoxy resin.The combination of the light-transmitting material 145 and the luminescent material is shown herein as the encapsulating material 60.

[0126] This embodiment schematically shows a cross-sectional view of the drawing plane, which also includes the length axis 108.

[0127] With respect to curved filaments, the length L1 may be longer than the effective length, which can be defined, for example, as the length between the two opposite ends of the filament.

[0128] Figure 3e schematically shows a perspective view of the same embodiment as schematically shown in Figure 3d.

[0129] Figure 3f schematically shows a perspective view of a curved filament. Note that the length axis 108 is also curved. The length axis may be the main axis of the support 105. The length of this axis is determined along axis 108. If the filament 200 can be curved in the plane of the filament 200, then the virtual plane may also be essentially the same curvature as the curvature of the filament 210. In other words, if the support is curved in the plane of the support, then the length axis is also curved, and similarly, the first and second virtual planes may also be curved. In the embodiment of Figure 3f, the length axis starts from the first plane on the left, follows the curved main axis, and ends from the second plane on the right.

[0130] Figure 4 schematically shows one embodiment of a retrofit lamp (which is either a photogenerating device 100 or comprises a photogenerating device 100).

[0131] The term "plural" refers to two or more items.

[0132] The terms “substantially” or “essentially” and similar terms as used herein will be understood by those skilled in the art. The terms “substantially” or “essentially” may also include embodiments with “entirely,” “completely,” “all,” and so on. Therefore, in embodiments, the adjectives “substantially” or “essentially” may also be omitted. Where applicable, the terms “substantially” or “essentially” may also relate to 90% or more, including 100%, such as 95% or more, particularly 99% or more, and more specifically 99.5% or more.

[0133] The term "comprise" also includes embodiments in which the term "comprises" means "consists of".

[0134] The term "and / or" specifically relates to one or more of the items mentioned before or after it. For example, the phrase "item 1 and / or item 2," and similar phrases may relate to one or more of item 1 and item 2. The term "comprising" may, in one embodiment, mean "consisting of," but in another embodiment, it may also mean "including at least the defined species, and optionally one or more other species."

[0135] Furthermore, terms such as "first," "second," and "third" in the text and claims are used to distinguish similar elements and are not necessarily used to describe a sequential or chronological order. Such terms are interchangeable under appropriate circumstances, and it should be understood that embodiments of the invention described herein may operate in other orders than those described or illustrated herein.

[0136] In this specification, devices, apparatus, or systems may be described in particular in their operation. As will be apparent to those skilled in the art, the present invention is not limited to methods of operation or to devices, apparatus, or systems in operation.

[0137] It should be noted that the embodiments described above are not limiting to the present invention, but rather illustrative, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.

[0138] In a claim, no reference numeral in parentheses should be construed as limiting the claim.

[0139] The use of the verb "to comprise" and its conjugations does not preclude the existence of elements or steps other than those described in the claims. Throughout the text and claims, unless the context clearly requires otherwise, the words "comprise," "comprising," etc., should be interpreted in a comprehensive sense, not exclusive or exhaustive, i.e., "includes, but is not limited to."

[0140] The article "a" or "an" preceding an element does not preclude the existence of multiple such elements.

[0141] The present invention may be implemented by hardware comprising several individual elements and by a appropriately programmed computer. In device claims, apparatus claims, or system claims that enumerate several means, some of these means may be embodied by a single identical hardware article. The mere fact that certain means are enumerated in different dependent claims does not imply that combinations of these means cannot be used advantageously.

[0142] The present invention also provides control systems capable of controlling devices, apparatus, or systems, or performing methods or processes described herein. Furthermore, the present invention also provides computer program products that, when executed on a computer, control one or more controllable elements of a device, apparatus, or system, which are functionally coupled to or included by such devices, apparatus, or systems.

[0143] The present invention further applies to devices, apparatus, or systems that include one or more of the features described in the specification and / or shown in the accompanying drawings. The present invention further relates to methods or processes that include one or more of the features described in the specification and / or shown in the accompanying drawings.

[0144] The various embodiments discussed in this patent can be combined to provide further advantages. Furthermore, those skilled in the art will understand that embodiments can be combined, and that three or more embodiments can be combined. Moreover, some of the features can form the basis for one or more divisional applications.

Claims

1. A photogenerating device comprising n filaments, a power distribution unit, and electronic equipment, Each of the n filaments includes at least m electrical contacts, m ≥ 2, and the n filaments are configured to generate filament light. The power distribution unit includes k conductive tracks separated by an electrical insulating material, where k ≥ 2. At least two of the electrical contacts of the n filaments are functionally coupled to at least two different conductive tracks. The at least two distinct conductive tracks are functionally coupled to the electronic device. The electronic device includes one or more of the following: a control system, a driver, and a transformer. n ≥ 2, and the electronic device is configured to individually control at least two sets, each containing at least one filament, and each of the filaments contains a plurality of solid light sources. One or more of the color point and correlated color temperature of the device light are controllable, and the device light includes one or more of the filament light from the n filaments during operation. The conductive tracks are configured to be parallel to each other, The power distribution unit is a light generation device having a ring shape.

2. The photogenerating device according to claim 1, wherein the electrical insulating material includes a polymer material.

3. The photogenerating device according to claim 1 or 2, wherein the electrical insulating material includes one or more of glass materials, composite materials, and ceramic materials.

4. The photogenerating device according to claim 1 or 2, further comprising a first support structure, wherein one or more of the power distribution unit and the first support structure are configured to support the n filaments.

5. The photogenerating device according to claim 4, wherein the power distribution unit surrounds the first support structure at least partially in the circumferential direction.

6. The photogenerating device according to claim 1 or 2, wherein the electrical contacts include a first electrical contact and a second electrical contact, the first electrical contact of the filament being functionally coupled to a conductive track, and the second electrical contact of the filament being functionally coupled to the same conductive track but to a different conductive track from the conductive track to which the first electrical contact is functionally coupled, or to a shared electrode outside the power distribution unit.

7. The photogenerating device according to claim 6, wherein the shared electrode is functionally coupled to the electronic device via a conductive connection portion in the first support structure according to claim 4.

8. The photogenerating device according to claim 1 or 2, wherein the length of the corresponding track is in the range of 70 to 100% of the length of the outer circumference of the power distribution unit.

9. The photogenerating device according to claim 1 or 2, wherein at least two of the conductive tracks are configured as anodes.

10. The photogenerating device according to claim 8, wherein the n filaments include a first filament and a second filament, the first filament being mechanically and electrically connected to a first conductive track of at least two distinct conductive tracks, the second filament being mechanically and electrically connected to a second conductive track of at least two distinct conductive tracks, the extension axis of each filament being configured in a plane intersecting the device axis, the plane having a first mutual angle selected from the range of 15 to 180°, the photogenerating device having a first extension axis, the n filaments each individually having a second extension axis, and at least two of the second extension axes having different second angles with respect to the first extension axis.

11. The photogenerating device according to claim 8, wherein 3 ≤ k ≤ 6 and n ≥ 3.

12. The photogenerating device according to claim 8, wherein at least two of the n filaments are configured to generate filament light having different correlated color temperatures having a difference of at least 500 K, or different colors having a color point difference of at least 0.03 with respect to u' and / or at least 0.03 with respect to v', and the electronic device is configured to control at least two of the n filaments in response to one or more of a user interface input signal, a sensor signal, and a timer.

13. The photogenerating device according to claim 1 or 2, wherein k ≥ 3 and at least one of the conductive tracks is configured as an antenna.

14. The light-generating device according to claim 1 or 2, wherein the light-generating device is a retrofit lamp.

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