Luminaire comprising a plurality of modules

Abstract

The invention provides a luminaire comprising a plurality of modules and a housing, wherein the housing comprises a tubular recess extending along a central axis between a light exit plane and a bottom plane; wherein the plurality of modules is arranged within the tubular recess between the bottom plane and the light exit plane, wherein each of the plurality of modules is arranged coaxial with the central axis; wherein the plurality of modules comprises: (i) a light engine module configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD); (ii) a driver module configured to convey power and / or control signals to the light engine module, wherein the driver module and the light engine module are electrically connected; wherein each of the plurality of modules is releasably arranged within the tubular recess of the housing.

Description

[0001] 2024PF80389

[0002] 1

[0003] Luminaire comprising a plurality of modules

[0004] FIELD OF THE INVENTION

[0005] The invention relates to a luminaire comprising a plurality of modules and a housing. The invention further relates to a corresponding method of stacking a plurality of modules within a luminaire.

[0006] BACKGROUND OF THE INVENTION

[0007] The evolution of lighting technology has seen a shift from simple incandescent bulbs to complex systems that integrate light sources, drivers, and optics. While advancements have led to increased efficiency and functionality, they have also introduced complexities in manufacturing, maintenance, and customization. However, the integration of components within a single housing often results in bulky lighting fixtures that are difficult to install and service. Even though architectures have advanced and resulted in compactly integrated fixtures, these architectures may still complicate thermal management, customization and repair.

[0008] These challenges highlight the need for a luminaire architecture that allows for miniaturization, efficient heat dissipation, and modularity for easy customization & repair. The latter being particularly relevant for a circular economy, as for example the Council of the EU has adopted a directive promoting the repair of broken or defective goods, also known as the right-to-repair (or R2R) directive.

[0009] SUMMARY OF THE INVENTION

[0010] It is an object of the invention to provide an improved luminaire, which at least alleviates the problems and disadvantages mentioned above, and meets the need for modularity and right-to-repair.

[0011] Thereto, the present invention provides a luminaire comprising a plurality of modules and a housing, wherein the housing comprises a tubular recess extending along a central axis between a light exit plane and a bottom plane; wherein the plurality of modules is arranged within the tubular recess between the bottom plane and the light exit plane, wherein each of the plurality of modules is arranged coaxial with the central axis; wherein the2024PF80389

[0012] 2

[0013] plurality of modules comprises: (i) a light engine module configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD); (ii) a driver module configured to convey power and / or control signals to the light engine module, wherein the driver module and the light engine module are electrically connected; wherein each of tahe plurality of modules is releasably arranged within the tubular recess of the housing; wherein the tubular recess comprises a recess surface; wherein the housing comprises an electrical track at least partly arranged on the recess surface; wherein the light engine module and the driver module are electrically connected via said electrical track.

[0014] In a preferred embodiment, the tubular recess comprises a recess diameter, wherein each of the plurality of modules comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most halve the recess diameter.

[0015] Throughout the application, said recess diameter may alternatively be recess apothem. Hence, in alternative preferred embodiments, the tubular recess comprises a recess apothem, wherein each of the plurality of modules comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most the recess apothem.

[0016] Hence, the luminaire according to the present invention comprises a housing and a plurality of modules. The plurality of modules comprises (at least) the light engine module and the driver module. The modules are coaxially arranged between said bottom plane and said light exit plane within the tubular recess extending along the central axis. Each of the plurality of modules thereby comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most halve the (size or value of the) recess diameter. Moreover, each of said plurality of modules is releasably arranged within the tubular recess of the housing, wherein the driver module and the light engine module are electrically connected.

[0017] Said modules may therefore be considered as ‘coins’ stacked within the tubular recess. This is a sleeker and compact form factor. This renders a revolutionary design that transforms traditional lighting solutions into a modular, efficient, and user-friendly technology. Namely, by adopting said ‘coin’ based modular approach, the luminaire comprises separate, easily replaceable and upgradeable components all arranged coaxially. This design does not only facilitate enhanced thermal management, but may also improve connectivity through purposefully stacked driver module comprising an integrated antenna,2024PF80389

[0018] 3

[0019] for example. Overall, the product architecture of the luminaire according to the present invention is characterized by its modularity, which extends the product life cycle and reduces environmental waste, making it an ideal solution for modern lighting needs. Consequently, the luminaire according to the invention is easy to disassemble and repair, meeting the requirements for right-to-repair.

[0020] In an embodiment, said light engine module may be at least one light engine module configured to, in operation, provide a respective light engine light.

[0021] In an embodiment, the plurality of modules is arranged within the tubular recess in a stacked configuration between the bottom plane and the light exit plane. In an embodiment, each of the plurality of modules is removably arranged within the tubular recess of the housing. Hence, when arranged within the tubular recess, the plurality of modules may be mechanically secured and / or connected to the housing in an assembled state, wherein the plurality of modules may be released, removed, detached, disassembled from said assembled state. In an embodiment, each of the plurality of modules may be releasably connected (or: fastened, or: secured) within the tubular recess of the housing.

[0022] According to the invention, each of the plurality of modules is arranged coaxial with the central axis. Alternatively, according to the invention, said coaxial may be concentric. Hence, each of the plurality of modules is arranged concentric with the central axis.

[0023] Throughout the application, said recess diameter may alternatively be phrased as recess width, or recess effective diameter, or recess diagonal, wherein the latter is especially relevant for recesses with a polygonal cross section.

[0024] In an embodiment, the luminaire is configured to emit luminaire light, in operation, wherein the luminaire light comprises at least part of the light engine light. In an embodiment, the light engine light and / or the luminaire light is white light having a Correlated Color Temperature (CCT) in a range between 2000K to 6500K, and optionally has a Color Rendering Index (CRI) of at least 80, or preferably at least 85. Said Correlated Color Temperature may for example be at most 3200K, or at least 2800K.

[0025] In an embodiment, each of the plurality of modules comprises a coin-shape. In an embodiment, the plurality of modules is arranged in a stacked configuration within the tubular recess. In an embodiment, each of the plurality of modules comprises a respective circumference (or: contour), wherein the circumference (or: contour) is conformal to the tubular recess. In an embodiment, each of the plurality of modules comprises a respective2024PF80389

[0026] 4

[0027] circumference (or: contour) abutting the housing. In an embodiment, each module of the plurality of modules comprises the same dimensions.

[0028] In an embodiment, each of the plurality of modules comprises at least one planar surface perpendicular to the central axis. Such an embodiment may not only facilitate efficient placement of the plurality of modules within the recess, but also improves thermal, mechanical, and / or electrical connections therebetween.

[0029] For example, the light engine module may comprise a first planar surface perpendicular to the central axis and / or a second planar surface perpendicular to the central axis, wherein said first planar surface is parallel to said second planar surface, wherein the distance between the first planar surface and the second planar surface is equal to said respective thickness.

[0030] For example, the driver module may comprise a first planar surface perpendicular to the central axis and / or a second planar surface perpendicular to the central axis, wherein said first planar surface is parallel to said second planar surface, wherein the distance between the first planar surface and the second planar surface is equal to said respective thickness.

[0031] For example, the first planar surface of the light engine module may face the light exit plane, wherein the first planar surface of the driver module may abut (when the plurality of modules are arranged within the tubular recess of the housing, or phrased differently stacked along the central axis within said tubular recess) the second planar surface of the light engine module, wherein the second planar surface of the driver module may face the bottom plane. Phrased differently, in aspects, the first planar surface of the light engine module and the second planar surface of the driver module may face opposing directions.

[0032] Hence, in an embodiment, each of the plurality of modules comprises a planar surface perpendicular to the central axis, wherein for each module of the plurality of modules the respective planar surface abuts a planar surface of another module of the plurality of modules.

[0033] In an embodiment, each of the plurality of modules comprises a planar surface perpendicular to the central axis, wherein for each module of the plurality of modules the respective planar surface thermally connects to a planar surface of another module of the plurality of modules. The phrase ‘thermally connects’ may alternatively be phrased as ‘makes thermal contact’. In aspects, said planar surfaces may abut with thermal paste therebetween.

[0034] In an embodiment, the light engine module comprises a first planar surface perpendicular to the central axis; wherein the driver module comprises a second planar2024PF80389

[0035] 5

[0036] surface perpendicular to the central axis; wherein the first planar surface abuts the second planar surface when the plurality of modules is arranged within the tubular recess; wherein the first planar surface is in thermal contact with the second planar surface when the plurality of modules is arranged within the tubular recess. Hence, in aspects, at least 80% of the surface area of the first planar surface may abut the second planar surface.

[0037] In an embodiment, said electrical track is arranged on the recess surface. For example, the electrical may be arranged (in a direction) parallel to the central axis. For example, the electrical may be arranged (in a direction) parallel to the central axis. In aspects, the electrical track may spiral on the recess surface along the central axis.

[0038] In an embodiment, said electrical track may comprise a plurality of electrical sub-tracks arranged on the recess surface. For example, said electrical track may comprise two electrical sub-tracks arranged on the recess surface. For example, the first electrical subtrack on the recess surface may face an opposing second electrical sub-track on the recess surface. Such embodiments may improve the electrical contact with the electrical track and consequently between the plurality of modules with one another.

[0039] In an embodiment, said electrical track is partly arranged on the recess surface, wherein the electrical track comprises a first connection point on the recess surface, a second connection point on the recess surface, and an electrical track connector (e.g. recessed or embedded) within the housing, wherein the first connection point connects to the light engine module and the second connection point connects to the driver module, when the plurality of modules are arranged within the tubular recess of the housing.

[0040] In an embodiment, the plurality of modules (i.e. e.g. the light engine module and the driver module) may comprise a respective female connector and the electrical track comprises a plurality of male connector each connecting to the respective female connector, when the plurality of modules is arranged within the tubular recess of the housing.

[0041] In an embodiment, the driver module comprises a driver module connector, wherein the light engine module comprises a light engine module connector, wherein the driver module connector electrically connects to the light engine module connector when the plurality of modules is arranged within the tubular recess.

[0042] In an embodiment, said light engine module connector may be a female connector and said driver module connector may be a male connector.

[0043] In an embodiment, said light engine module connector may be a male connector and said driver module connector may be a female connector.2024PF80389

[0044] 6

[0045] In an embodiment, the driver module is arranged closer to the light exit plane than the light engine module. In an alternative embodiment, the driver module is arranged closer to the bottom plane than the light engine module. In an alternative embodiment, the driver module comprises a central hole, wherein at least part of the light engine module is arranged within the central hole of the driver module. In an alternative embodiment, the light engine module comprises a central hole, wherein at least part of the driver module is arranged within the central hole of the light engine module.

[0046] In embodiments, the housing comprises a light exit window arranged in the bottom plane; wherein the light engine light comprises first light engine light and second light engine light; wherein the light engine module is configured to emit, in operation, the first light engine light towards the light exit plane and the second light engine light towards the light exit window. Such embodiments are advantageous because the light engine module may emit light in opposing directions, thereby rendering a bidirectional luminaire.

[0047] In other embodiments, the housing comprises a light exit window arranged in the bottom plane; wherein the plurality of modules comprises: (vi) a further light engine module configured to provide, in operation, further light engine light, wherein the further light engine module comprises at least one of a Light Emitting Diode (LED) and Laser Diode (LD); wherein the driver module is configured to convey power and / or control signals to the further light engine module, wherein the driver module and the further light engine module are electrically connected, for example via said electrical track, wherein the further light engine module is arranged closer to the bottom surface than another module of the plurality of modules; wherein the light engine module is configured to emit, in operation, the light engine light towards the light exit plane and the further light engine light towards the light exit window. In an embodiment, the driver module may comprise a battery. In an embodiment, the driver module may comprise an antenna device for wireless communication (with an external device).

[0048] In an embodiment, the plurality of modules comprises: (iii) an optical module configured to transform the light engine light into luminaire light, wherein at least one property of the light engine light and the luminaire light is different; wherein at least part of the luminaire light exits through the light exit plane.

[0049] In an embodiment, wherein the optical module comprises a conversion material configured to convert the light engine light into the luminaire light, wherein a light spectrum of the light engine light and the luminaire light is different. In an embodiment,2024PF80389

[0050] 7

[0051] wherein the conversion material is a luminescent material. For example, the conversion material may be a phosphor.

[0052] In an embodiment, the optical module comprises an optical element configured to redirect, collimate, refract, diffract, and / or diffuse the light engine light into the luminaire light, wherein respectively the direction, collimation, refraction, diffraction and / or diffusion of the light engine light and the luminaire light is different. In an embodiment, the optical element is at least one of a lens, a diffuser, a collimator, a reflector, a filter, a mirror, a mask, a louvre.

[0053] In an embodiment, the optical module is arranged closer to the light exit plane than another module of the plurality of modules. In an alternative embodiment, the optical module is arranged closer to the bottom plane than another module of the plurality of modules.

[0054] In an embodiment, the optical module secures at least one other module of the plurality of modules within the tubular recess.

[0055] In an embodiment, the plurality of modules comprises: (iv) a heat sink module configured to convey heat from at least one other module of the plurality of modules.

[0056] In an embodiment, the heat sink module comprises a central hole, wherein the driver module and / or the light engine module is arranged within the central hole of the heat sink module.

[0057] In an embodiment, the driver module comprises a communication unit configured to exchange signals with an external device.

[0058] In an embodiment, the tubular recess comprises a cross-sectional shape in a plane perpendicular to the central axis, wherein said cross-sectional shape is a circle. In an alternative embodiment, the tubular recess comprises a cross-sectional shape in a plane perpendicular to the central axis, wherein said cross-sectional shape is a polygon. For example, said polygon may be a square, an octagon, a hexagon, etc.

[0059] In aspects, the light exit window may comprise a cross-sectional shape defined in a plane perpendicular to the central axis that is different to the cross-sectional shape of the tubular recess. In aspects, a light exit window diameter may be smaller than the recess diameter of the tubular recess.

[0060] In an embodiment, at least one (or: each) of the plurality of modules may comprise a respective circumference (or: contour), wherein at least part of the circumference (or: contour) is conformal to the tubular recess, and in particular to the cross-sectional shape of the tubular recess.2024PF80389

[0061] 8

[0062] As mentioned, the tubular recess comprises a recess diameter, wherein each of the plurality of modules comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most halve the recess diameter. In an embodiment, the respective thickness is at most a sixth of the recess diameter.

[0063] In an embodiment, the recess diameter is at most two inches, preferably at most one inch. Such an embodiment may embody miniaturized spots.

[0064] In an embodiment, the recess diameter is at most 30 centimeters, such as for example at most 20 centimeters, such as for example at most 10 centimeters, e.g. 8 centimeter, e.g. 6 centimeters. Such embodiments may relate to improved spot luminaires or professional luminaires (e.g. floodlights). The present invention may be particularly relevant and suitable for spot luminaires, such as spotlights. Hence, the luminaire according to the invention may be a spotlight.

[0065] In an embodiment, each of the plurality of modules comprises a respective fastening means configured to releasably connect the respective module to the housing within the tubular recess of the housing. For example, each module of the plurality of modules may be tight fitted, snap fitted, clamped, screwed in the tubular recess of the housing.

[0066] In an embodiment, the optical module comprises a screw thread for releasably connecting the optical module to the housing within the tubular recess of the housing.

[0067] In an embodiment, the housing comprises a compartment and a converter arranged within said compartment, wherein the converter is configured to convert AC power into DC power, wherein the converter is electrically connected to the driver module, wherein the converter is configured to convey the DC power to the driver module.

[0068] In an embodiment, the plurality of modules comprises: (v) a converter module configured to convert to receive AC power, to convert the received AC power into DC power, and to convey the DC power to the driver module; wherein the converter module and the driver module are electrically connected. For example, as mentioned, in some embodiments, the housing may comprise an electrical track at least partly arranged on the recess surface of the tubular recess; wherein the converter module and the driver module are electrically connected via said electrical track. Alternatively, for example, the converter module and the driver module are electrically connected directly. For example, the converter module may comprise an output interface for conveying the DC power, and the driver module may comprise an input interface for receiving the DC power, wherein the input interface and the output interface are connected.2024PF80389

[0069] 9

[0070] In some examples, as partly mentioned, the driver module may comprise an antenna device for wireless communication. Said antenna device may transmit and receive wireless communication signals. Said wireless communication signals may comprise control signals (for the driver and / or for luminaire according to the invention). In some examples, such a driver module may be arranged closer to the light exit plane than the light engine module. In some examples, such a driver module may be arranged closer to the light exit plane than any other module of the plurality of modules. Since the antenna device is closer to the light exit plane, the reception and / or transmission of said antenna device is further improved, and less attenuated.

[0071] In an embodiment, housing is at least partly light transmissive. For example, the housing may be transparent.

[0072] In an embodiment, tubular recess comprises a recess surface, wherein the recess surface comprises a light reflective coating. Hence, the tubular recess itself may serve as an optical element, such as a reflector. Alternatively, said recess surface comprises a light diffusive coating.

[0073] In an embodiment, each of the plurality of modules comprises a respective module housing. In a related embodiment, each respective module housing comprises a circumferential surface between a first planar housing surface and a second planar housing surface. In a related embodiment, each respective module housing comprises the same respective thickness and a same respective (effective) diameter.

[0074] In an embodiment, the plurality of modules comprises a sensor module comprising at least one sensor configured to sense a parameter and output a sensing signal indicative of said parameter. The sensor module may further comprise a communication unit configured to convey said sensing signal wirelessly or wiredly to another apparatus. Said apparatus may be an external apparatus, or one of the other modules of the plurality of modules. Alternatively, the sensor module may comprise a memory for storing sensed sensing signals. Said communication unit may be an antenna. Said communication unit may utilize the wireless modalities of Wi-Fi, Bluetooth, ZigBee, Lo-Ra, NFC, RFID, Matter, Thread, Li-Fi, VLC, IR, RF, etc. Alternatively, the communication unit may utilize the wired modalities of PLC, DMX, DALI, etc. In an embodiment, the sensor module and the light engine module and / or the driver module are electrically connected via a sensor track. The electrical track according to the invention may be the sensor track. Alternatively, a separate sensor track may be envisioned. The sensor track is configured to convey power and / or data signals between the sensor module and the light engine module and / or the driver module. The2024PF80389

[0075] 10

[0076] at least one sensor may be at least one of: a PIR sensor, a light sensor, a presence sensor, an occupancy sensor, a Time-of-Flight sensor, a temperature sensor, a camera, a microphone, a thermopile, a thermopile array, a pressure sensor, a tactile sensor. Hence, the sensor module may comprise multiple sensors, e.g. hosting a sensor bundle. In an embodiment, the at least one sensor comprises a button (or: pressure sensor) configured to receive a user input (e.g. a finger press), wherein the parameter is the user input, wherein the button is configured to output a sensing signal indicative of said user input, wherein the sensor module comprises a communication unit configured to convey said sensing signal to the light engine module and / or the driver module, wherein the sensing signal is configured to cause the Light Emitting Diode (LED) or Laser Diode (LD) of the light engine module to operate with a different setting. Said setting may for example be turning the respective diode (LED or LD) on or off. Said setting may for example be dimming the respective diode (LED or LD).

[0077] In aspects, at least one of the plurality of modules comprises a slot or indent arranged for accessing a surface of the respective module(s). Such a slot or indent may allow an installer to touch the surface and release the respective module from, or connect or rotate the respective module in the tubular recess. Said slot or indent may be bounded by box of at most 2 by 2 centimeters, such as 1 by 1 centimeters. Said surface may be a surface parallel to the central axis.

[0078] It is further an object of the invention to provide an improved method of stacking a plurality of modules within a luminaire according to the invention, which at least alleviates the problems and disadvantages mentioned above. Thereto, the invention provides a method of stacking a plurality of modules within a luminaire, wherein the luminaire comprises a housing comprising a tubular recess extending along a central axis between a light exit plane and a bottom plane; wherein the method comprises: stacking a plurality of modules within the tubular recess between the bottom plane and the light exit plane, wherein each of the plurality of modules is arranged coaxial with the central axis, wherein each of the plurality of modules is releasably arranged within the tubular recess of the housing; wherein the tubular recess comprises a recess diameter, wherein each of the plurality of modules comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most halve the recess diameter; wherein the plurality of modules comprises: (i) a light engine module configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD); (ii) a driver module configured to convey power and / or control signals to the light engine module, wherein the driver module and the light engine module are2024PF80389

[0079] 11

[0080] electrically connected. The embodiments and advantages of the luminaire according of the invention applies mutatis mutandis to said method according to the invention.

[0081] In an aspect, the present invention provides a luminaire comprising a plurality of modules and a housing, wherein the housing comprises a tubular recess extending along a central axis between a light exit plane and a bottom plane; wherein the plurality of modules is arranged within the tubular recess between the bottom plane and the light exit plane, wherein each of the plurality of modules is arranged coaxial with the central axis; wherein the plurality of modules comprises: (i) at least one light engine module configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD); (ii) a driver module configured to convey power and / or control signals to the light engine module, wherein the driver module and the light engine module are electrically connected; wherein each of the plurality of modules is releasably arranged within the tubular recess of the housing. The embodiments and advantages of the luminaire according of the invention applies mutatis mutandis to this aspect according to the invention. Hence, in a related embodiment, the tubular recess comprises a recess surface; wherein the housing comprises an electrical track at least partly arranged on the recess surface; wherein the at least one light engine module and the driver module are electrically connected via said electrical track.

[0082] BRIEF DESCRIPTION OF THE DRAWINGS

[0083] The invention will now be further elucidated by means of the schematic nonlimiting drawings:

[0084] Fig. 1 depicts schematically, by non-limiting example, a luminaire according to the invention;

[0085] Fig. 2 depicts schematically, by non-limiting example, a luminaire according to the invention;

[0086] Fig. 3 depicts schematically, by non-limiting example, a luminaire according to the invention;

[0087] Fig. 4 depicts schematically an embodiment of a method according to the invention.

[0088] Fig. 5 depicts schematically, by non-limiting example, a luminaire according to the invention;2024PF80389

[0089] 12

[0090] Fig. 6 depicts schematically, by non-limiting example, a luminaire according to the invention;

[0091] Fig. 7 depicts schematically, by non-limiting example, a luminaire according to the invention.

[0092] DETAILED DESCRIPTION OF THE EMBODIMENTS

[0093] The invention will be described with reference to the Figures.

[0094] Figure 1 depicts schematically, by non-limiting example, a perspective view and a cross-sectional sideview of a luminaire 10 according to the invention. The luminaire 10 comprises a housing 5. The housing 5 comprises a tubular recess 6 extending along a central axis 7 between a light exit plane 8 and a bottom plane 9. The tubular recess 6 comprises a recess diameter 16. The luminaire 10 may emit luminaire light in operation, wherein at least part of the luminaire light is conveyed (or: exits) through the light exit plane 8.

[0095] Here, the tubular recess 6 comprises a cross-sectional shape in a plane perpendicular to the central axis 7. Here, said cross-sectional shape is a circle. In alternative examples, said cross-sectional shape may be a polygon, such as a square. Similarly, the housing 5 comprises a cross-sectional shape in a plane perpendicular to the central axis 7. Here, the cross-sectional shape of the housing is also a circle. Alternatively, the cross-sectional shape of the housing may be different to the cross-sectional shape of the tubular recess - for example, the cross-sectional shape of the housing being a polygon, and the cross-sectional shape of the tubular recess being a circle, or vice versa.

[0096] In aspects, each of the plurality of modules may comprise a respective circumference (or: contour), wherein at least part of the circumference (or: contour) is conformal to the tubular recess, and in particular to the cross-sectional shape of the tubular recess. Said circumference (or: contour) may thereby abut (a recess surface of) the tubular recess and thereby the housing.

[0097] Referring to figure 1, the luminaire 10 according to the invention comprises a plurality of modules 1, 2, 3 arranged within the tubular recess 6 (e.g. arranged in a stacked configuration). Each of the plurality of modules 1, 2, 3 is arranged coaxial with the central axis 7 between the bottom plane 9 and the light exit plane 8. Thereby, each of the plurality of modules also comprises a respective thickness 11, 12, 13 defined along the direction of the central axis 7, wherein the respective thickness 11, 12, 13 is at most halve the recess diameter 16. Moreover, the plurality of modules 1, 2, 3 is releasably arranged within the tubular recess2024PF80389

[0098] 13

[0099] 6. This architecture renders a compact luminaire 10, promotes modularity, and facilitates replacement & repair of the luminaire components.

[0100] The plurality of modules 1, 2, 3 of the luminaire 10 comprises at least a light engine module 1 and a driver module 2. Referring to figure 1, the plurality of modules of the luminaire 10 further comprises an optical module 3. The optical module 3 is optional.

[0101] In alternative examples, the luminaire may comprise further modules, such as e.g. a heat sink module; e.g. a communication module comprising a communication unit for, in operation, communicating (wireless) signals to an external apparatus; e.g. a controller module for processing information and / or controlling the luminaire; e.g. a sensor module comprising a sensor.

[0102] The light engine module 1 is configured to provide, in operation, light engine light (not depicted). The light engine module 1 comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD).

[0103] The driver module 2 is configured to convey power and / or control signals to the light engine module 1. The driver module 2 may optionally comprise a communication unit configured to exchange signals with an external apparatus. A modular driver module with a communication unit is advantageous for enabling communication. Said signals may either be wired or wireless. The driver module may further optionally comprise a mains connector configured to receive mains power.

[0104] The optical module is configured to transform the light engine light into the luminaire light. Thereby, at least one property of the light engine light and the luminaire light is different. In the present embodiment, the optical module 3 comprises an optical element configured to diffuse the light engine light into the luminaire light, wherein the diffusion of the light engine light and the luminaire light is different. Hence, the optical element is a diffuser.

[0105] Alternatively, the optical element may redirect, collimate, refract, and / or diffract the light engine light into the luminaire light, wherein respectively the direction, collimation, refraction, and / or diffraction of the light engine light and the luminaire light is different. Alternatively, the optical module comprises a conversion material - such as for example a luminescent material, such as a phosphor - configured to convert the light engine light into the luminaire light, wherein a light spectrum of the light engine light and the luminaire light is different. Hence, considering such alternatives, the optical element may be at least one of: a lens, a diffuser, a collimator, a reflector, a filter, a mirror, a mask, a louvre.2024PF80389

[0106] 14

[0107] Here: The thickness 11 of the light engine module 1 is at most a third of the recess diameter 16. The thickness 12 of the driver module 2 is at most halve of the recess diameter 16. The thickness 13 of the optical module 3 is at most a sixth of the recess diameter 16. Other values may be envisioned similarly, as long as the condition of the respective thickness 11, 12, 13 being at most halve the recess diameter 16 is met. This condition ensures that the luminaire maintains a compact form-factor, and the plurality of modules may resemble a coin-shape. In an alternative embodiment, each module of the plurality of modules comprises the same dimensions.

[0108] Still referring to figure 1, the driver module 2 and the light engine module 1 are electrically connected. More specifically, the driver module 2 comprises a driver module connector 18. The light engine module 1 comprises a light engine module connector 17. The driver module connector 17 connects to the light engine module connector 18. Thereby, in aspects, said light engine module connector may be a female connector and said driver module connector may be a male connector; or vice versa. Other electrical connection means may be envisioned similarly.

[0109] For example, in an alternative example, the tubular recess 6 of the luminaire 10 comprises a recess surface; wherein the housing comprises an electrical track at least partly arranged on the recess surface; wherein the light engine module and the driver module are electrically connected via said electrical track.

[0110] Hence, still referring to figure 1, the luminaire 10 comprises the light engine module 1, the driver module 2 and the (optional) optical module 3. Said plurality of modules 1, 2, 3 is arranged within the tubular recess 6 between the between the bottom plane 9 and the light exit plane 8. However, their arrangement in the stack between the bottom plane 9 and the light exit plane 8 may be different in various configurations. Also, their dimensions and means for establishing said electrical connection may be different in various configurations. Figure 1 depicts one possible configuration.

[0111] Figure 1 depicts a configuration of the luminaire 10 according to the invention, wherein the light engine module 2 is arranged closer to the light exit plane 8 than the driver module 1. The optical module 3 is arranged closer to the light exit plane 8 than the light engine module 2 and the driver module 1. Hence, the driver module 2 is arranged closer to the bottom plane than the light engine module 1 and the optical module 3.

[0112] Here, the optical module may for example comprise a screw thread for releasably connecting the optical module to the housing within the tubular recess of the housing, and thereby securing (or: holding) the light engine module and the driver module2024PF80389

[0113] 15

[0114] within the tubular recess. Alternatively, the optical module may comprise a clamp, or a press-fit connector for releasably connecting the optical module to the housing within the tubular recess of the housing, and thereby securing (or: holding) the light engine module and the driver module within the tubular recess

[0115] Alternatively, each of the plurality of modules of the luminaire comprises a respective fastening means configured to releasably connect the respective module to the housing within the tubular recess of the housing. For example, each module of the plurality of modules may be tight fitted, snap fitted, clamped, screwed, etc. in the tubular recess of the housing.

[0116] Still referring to the configuration depicted in figure 1, albeit optional, the light engine module 1 comprises a planar surface 14 perpendicular to the central axis 7. The driver module also comprises a planar surface 15 perpendicular to the central axis 7. The planar surface 14 of the light engine module 1 and the planar surface 15 of the driver module 2 abut one another. This improves thermal contact and enables miniaturization. The phrase ‘abutting’ may alternatively be ‘to make thermal contact’ or ‘is in thermal contact’.

[0117] In optional examples, the planar surface 14 of the light engine module may comprise a thermal paste and / or the planar surface 15 of the driver module may comprise a thermal paste, wherein the planar surface 14 of the light engine module 1 and the planar surface 15 of the driver module 2 abut one another with thermal paste therebetween.

[0118] Yet alternatively, each of the plurality of modules (1, 2, 3) comprises at least one planar surface perpendicular to the central axis.

[0119] Still referring to figure 1, the recess diameter is at most 30 centimeters, such as for example at most 15 centimeters, such as 10 centimeters. In some examples, the recess diameter is at most two inches, such as for example at most one inch. The former diameter sizes for the recess diameter may relate to larger luminaires, such as professional fixtures, roadside lamps, or floodlights. The latter examples characterize for example miniaturized spots (for indoor use).

[0120] All in all, considering the above, the luminaire 10 according to the invention comprises a plurality of modules 1, 2, 3 with a sleek and compact form factor. This renders a revolutionary design that transforms traditional lighting solutions into a modular, efficient, and user-friendly technology. The luminaire 10 comprises separate, easily replaceable and upgradeable components all arranged coaxially. This architecture is characterized by its modularity, which extends the product life cycle and reduces environmental waste, making it2024PF80389

[0121] 16

[0122] an ideal solution for modern lighting needs. Consequently, the luminaire 10 according to the invention is easy to disassemble and repair, meeting the requirements for right-to-repair.

[0123] Figure 2 depicts schematically, by non-limiting example, a perspective view and a cross-sectional sideview of a luminaire 20 according to the invention. The luminaire 20 comprises a housing 25. The housing 25 comprises a tubular recess 26 extending along a central axis 27 between a light exit plane 28 and a bottom plane 29. The tubular recess 26 comprises a recess diameter 16. The luminaire 20 may emit luminaire light in operation, wherein at least part of the luminaire light is conveyed (or: exits) through the light exit plane 8.

[0124] Here, the tubular recess 26 comprises a cross-sectional shape in a plane perpendicular to the central axis 27. Here, said cross-sectional shape is a circle. In alternative examples, said cross-sectional shape may be a polygon, such as a square. Similarly, the housing 25 comprises a cross-sectional shape in a plane perpendicular to the central axis 27. Here, the cross-sectional shape of the housing is also a circle. Alternatively, the cross-sectional shape of the housing may be different to the cross-sectional shape of the tubular recess - for example, the cross-sectional shape of the housing being a polygon, and the cross-sectional shape of the tubular recess being a circle, or vice versa.

[0125] Referring to figure 2, the luminaire 20 according to the invention comprises a plurality of modules 21, 22, 24 arranged within the tubular recess 26 (e.g. arranged in a stacked configuration). Each of the plurality of modules 21, 22, 24 is arranged coaxial with the central axis 27 between the bottom plane 29 and the light exit plane 28. Thereby, each of the plurality of modules 21, 22, 24 also comprises a respective thickness 31, 32, 34 defined along the direction of the central axis 27, wherein the respective thickness 31, 32, 33 is at most halve the recess diameter 36. Moreover, the plurality of modules 21, 22, 24 is releasably arranged within the tubular recess 26. This architecture renders a compact luminaire 20, promotes modularity, and facilitates replacement & repair of the luminaire components. In the present embodiment, by non-limiting example, each module of the plurality of modules 21, 22, 24 comprises the same dimensions. Hence, their respective thickness 31, 32, 34 is the same, while in alternative embodiments this may be envisioned differently, as long as the condition of the respective thickness 31, 32, 33 being at most halve the recess diameter 36 is met.

[0126] The plurality of modules 21, 22, 24 of the luminaire 20 comprises at least a light engine module 21 and a driver module 22. Referring to figure 1, the plurality of2024PF80389

[0127] 17

[0128] modules of the luminaire 20 further comprises a heat sink module 24. The heat sink module 24 is optional.

[0129] The light engine module 21 is configured to provide, in operation, light engine light (not depicted). The light engine module 21 comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD). In aspects, the LED or LD may be arranged in the light engine module so as to face the light exit plane 28. The LEDs may for example comprise LED packages or LED filaments.

[0130] The driver module 22 is configured to convey power and / or control signals to the light engine module 21. The driver module 22 may optionally comprise a communication unit configured to exchange signals with an external apparatus. The driver module may further optionally comprise a mains connector configured to receive mains power. The driver module may alternatively comprise an AC to DC converter for converting AC (mains) power to DC power.

[0131] The heat sink module 24 is configured to convey heat from at least one other module of the plurality of modules. Here, the heat sink module conveys heat from the light engine module 21 and the driver module 22.

[0132] Namely, the light engine module 22 is arranged closer to the light exit plane 28 than the driver module 21 and the heat sink module 24. The heat sink module 24 is arranged closer to the light exit plane 28 than the driver module 22. Hence, the heat sink module 24 is stacked between the light engine module 21 and the driver module 22. Hence, the driver module 22 is arranged closer to the bottom plane than the light engine module 21 and the heat sink module 23.

[0133] Still referring to figure 1, the driver module 2 and the light engine module 1 are electrically connected. The tubular recess 26 of the luminaire 20 comprises a recess surface 40. The housing 25 comprises an electrical track 30 at least partly arranged on the recess surface 40. Here, the light engine module 21 and the driver module 22 are electrically connected via said electrical track 30, wherein the electrical track 30 is arranged on the recess surface 40. The light engine module 21 comprises a light engine module connector 37 configured to connect to the electrical track 30, when the light engine module 21 is arranged within the tubular recess 26. The driver module 22 comprises a driver module connector 38 configured to connect to the electrical track 30, when the driver module 22 is arranged within the tubular recess 26. The electrical track 30 then electrically connects the light engine module 21 and the driver module 22.2024PF80389

[0134] 18

[0135] Albeit optionally, the electrical track is arranged in a direction parallel to the central axis 27. The electrical track may also spiral around on the recess surface and concentrically with the central axis. The electrical track may comprise a copper track. The electrical track may alternatively be at least partly embedded or recessed in the housing. For example, the electrical track may comprises a first connection point on the recess surface, a second connection point on the recess surface, and an electrical track connector (part) recessed or embedded within the housing, wherein the first connection point connects to the light engine module and the second connection point connects to the driver module, when the plurality of modules are arranged within the tubular recess of the housing. Yet alternatively, driver module comprises a driver module connector, wherein the light engine module comprises a light engine module connector, wherein the driver module connector electrically connects to the light engine module connector when the plurality of modules is arranged within the tubular recess.

[0136] Still referring to figure 2, albeit optional, the light engine module 21 comprises a planar surface 33 perpendicular to the central axis 27. The driver module also comprises a planar surface 35 perpendicular to the central axis 27. The heat sink module 24 comprises a first planar surface 36 facing the light engine module 21, and a second planar surface 39 facing the driver module 22. The planar surface 33 of the light engine module 21 and the first planar surface 36 of the heat sink module 24 abut one another. The planar surface 35 of the driver module 22 and the second planar surface 39 of the heat sink module 24 abut one another. Since the planar surfaces 33, 35 of the light engine module 21 and the driver module 22 abut (or: make thermal contact with, or: is in thermal contact) the planar surfaces 36, 39 of the heat sink module 24, thermal contact is improved and miniaturization facilitated.

[0137] In optional examples, the planar surface 35 of the light engine module 21 may comprise a thermal paste, the planar surfaces 36, 39 of the heat sink module 24, and / or the planar surface 33 of the driver module 22 may comprise a thermal paste. Hence, the mentioned abutting surfaces may abut one another with thermal paste therebetween.

[0138] As mentioned, the heat sink module 24 is stacked between the light engine module 21 and the driver module 22.

[0139] Alternatively, in embodiments, the plurality of modules may further comprise an optical module configured to transform the light engine light into luminaire light, wherein at least one property of the light engine light and the luminaire light is different, wherein at least part of the luminaire light exits through the light exit plane. Said optical module may yet2024PF80389

[0140] 19

[0141] alternatively comprise a communication unit for wireless communication, such as an antenna or chip. Said optical module may be at least partly light transmissive.

[0142] Alternatively, in embodiments, the plurality of modules may further comprise a communication module configured to communicate via a wireless communication modality with an external apparatus. Said external apparatus may for example be a remote-control apparatus, or server, or commissioning device. Said communication module may for example comprise an antenna or chip for wireless communication. Said communications module may be arranged closer to the light exit plane than any of the other one of the plurality of modules. Said communication module may comprise a light transmissive aperture. Said communication may comprise a light transmissive section.

[0143] All in all, considering the above, the luminaire 20 according to the invention comprises a plurality of modules 21, 22, 23 with a sleek and compact form factor. This renders a revolutionary design that transforms traditional lighting solutions into a modular, efficient, and user-friendly technology. The luminaire 20 comprises separate, easily replaceable and upgradeable components all arranged coaxially. This architecture is characterized by its modularity, which extends the product life cycle and reduces environmental waste, making it an ideal solution for modern lighting needs. Consequently, the luminaire 20 according to the invention is easy to disassemble and repair, meeting the requirements for right-to-repair.

[0144] Figure 3 depicts schematically, by non-limiting example, an exploded perspective view of a luminaire 50 according to the invention. The luminaire 50 comprises a housing 55. The housing 55 comprises a tubular recess 56 extending along a central axis 57 between a light exit plane 58 and a bottom plane 59. The tubular recess 56 comprises a recess diameter 56. The luminaire 50 may emit luminaire light in operation, wherein at least part of the luminaire light is conveyed (or: exits) through the light exit plane 58. Here, the tubular recess 56 comprises a cross-sectional shape in a plane perpendicular to the central axis 57. Here, said cross-sectional shape is a circle. Alternatively, said cross-sectional shape may be a polygon.

[0145] Referring to figure 3, the luminaire 50 according to the invention comprises a plurality of modules 51, 52, 53, 54 arranged within the tubular recess 56 (e.g. arranged in a stacked configuration). Figure 3 depict the luminaire 50 and the plurality of modules 51, 52, 53, 54 in an exploded view, which plurality of modules 51, 52, 53, 54 are arranged between the light exit plane 58 and the bottom plane 59 when arranged stacked in the tubular recess 56.2024PF80389

[0146] 20

[0147] Each of the plurality of modules 51, 52, 53, 54 is arranged coaxial with the central axis 57 between the bottom plane 59 and the light exit plane 58. Thereby, each of the plurality of modules 51, 52, 53, 54 also comprises a respective thickness defined along the direction of the central axis 57. The respective thickness of the plurality of modules 51, 52, 53, 54 is at most halve the recess diameter 66. Moreover, the plurality of modules 51, 52, 53, 54 are releasably arranged within the tubular recess 56 of the housing 55. This architecture renders a compact luminaire 50, promotes modularity, and facilitates replacement & repair of the luminaire components. In the present embodiment, by non-limiting example, each module of the plurality of modules 21, 22, 24 comprises respectively a same contour, which contours conform with the tubular recess 66.

[0148] Still referring to figure 3, more specifically: The luminaire 50 comprises a light engine module 51 configured to provide, in operation, light engine light, wherein the light engine module 51 comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD). Here, the light engine module 51 comprises a light engine module diameter that is smaller than a respective diameter of any other one of the plurality of modules 52, 53, 54.

[0149] The luminaire 50 comprises a driver module 52 configured to convey power and / or control signals to the light engine module 51. Here, the driver module 52 comprises a central hole 62, wherein at least part of the light engine module 51 is arranged within the central hole of the driver module 52. The driver module 52 and the light engine module 51 are electrically connected.

[0150] Namely, the driver module 52 comprises a driver module connector 68, wherein the light engine module comprises a light engine module connector 67, wherein the driver module connector 68 electrically connects to the light engine module 67 connector when the plurality of modules 51, 52, 53, 54 is arranged within the tubular recess 56.

[0151] Furthermore, the tubular recess 56 comprises a recess surface 69. The housing 55 comprises an electrical track 70 at least partly arranged on the recess surface 69. Here, the electrical track 70 may be a power track. Said power track is recessed (or: at least partly embedded) in the recess surface 69. Here, the driver module 52 is electrically connected to said power track 70. The electrical track 70 may provide mains power to the driver module 52.

[0152] The luminaire 50 further comprises, albeit optional, an optical module 53. The optical module 53 is configured to transform the light engine light into luminaire light, wherein at least one property of the light engine light and the luminaire light is different, wherein at least part of the luminaire light exits through the light exit plane 58. For example,2024PF80389

[0153] 21

[0154] the optical module 53 comprises a conversion material, such as a phosphor, wherein the conversion material is configured to convert the light engine light into the luminaire light, wherein a light spectrum of the light engine light and the luminaire light is different. The optical module may additionally or alternatively comprise an optical element, such as for example at least one of a lens, a diffuser, a collimator, a reflector, a filter, a mirror, a mask, a louvre.

[0155] The luminaire 50 further comprises, albeit optional, a heat sink module 54. The heat sink module 54 is configured here to convey heat from at least one other module of the plurality of modules, namely the light engine module 51 and / or the driver module 52.

[0156] In alternative embodiments, not depicted, and albeit optional, the luminaire may comprise a control module. Hence, the plurality of modules comprises a control module. The control module may comprise a controller configured to process information and / or control an operation of the luminaire. Said control module may for example be arranged closer to the bottom plane than the light engine module or the driver module. Alternatively, the control module may for example be arranged between the driver module and the light engine module. Yet alternatively, the light engine module and / or the driver module may comprise a central hole, wherein the control module may be arranged at least partly within said central hole.

[0157] In alternative embodiments, not depicted, and albeit optional, the luminaire may comprise a sensor module. Hence, the plurality of modules comprises a sensor module. The sensor module may comprise a sensor configured to sense a parameter and output a sensing signal indicative of said parameter. The sensor module may convey said sensing signal to an external apparatus, and / or to the driver module, and / or to a control module. The sensor module may for example be arranged closest to the light exit plane. A light engine module and / or an optical module may for example comprise a respective central hole, wherein the sensor module may for example at least partly be arranged in said respective central hole.

[0158] Still referring to figure 1, the optical module 53 is arranged closer to the light exit plane 58 than any other module 51, 52, 54, of the plurality of modules. The heat sink module 54 is arranged closer to the bottom plane 59 than the driver module 52. Hence, the driver module 52 and the light engine module 51 are stacked (or: sandwiched) between the optical module 53 and the heat sink module 54. In alternative aspects, the heat sink module comprises a central hole, wherein the light engine module is also at least partly arranged within the central hole of the heat sink module.2024PF80389

[0159] 22

[0160] Still referring to figure 1, each of the plurality of modules 51, 52, 53, 54 comprises at least one planar surface perpendicular to the central axis. The respective planar surface may bound the respective module. A planar surface of the heat sink module 54 (e.g. a planar surface that faces the direction of the light exit plane 58) abuts a planar surface of the light engine module 51 and / or the heat sink module 52. A planar surface of the optical module 53 (e.g. a planar surface that faces the direction the bottom plane 59) abuts a planar surface of the light engine module 51 and / or the heat sink module 52. Alternatively, the optical module may not comprise a planar surface, because the optical module may for example be a lens. The abutting surfaces may make thermal contact with one another.

[0161] Moreover, in alternative aspects, each of the plurality of modules comprises a coin-shape, wherein the respective thickness of each of the modules is at most a third of the recess diameter, such as for example at most a sixth of the recess diameter.

[0162] In alternative examples, the optical module may comprise a fastening means to releasably connect the optical module to the housing within the tubular recess of the housing. Said fastening means may for example be a screw thread. The housing may comprise a complementary or congruent thread on the recess surface of the recess.

[0163] All in all, considering the above, the luminaire 50 according to the invention comprises a plurality of modules 51, 52, 53, 54 with a sleek and compact form factor. This renders a revolutionary design that transforms traditional lighting solutions into a modular, efficient, and user-friendly technology. The luminaire 50 comprises separate, easily replaceable and upgradeable components all arranged coaxially. Said coaxially may alternatively be concentrically. This architecture is characterized by its modularity, which extends the product life cycle and reduces environmental waste, making it an ideal solution for modern lighting needs. Consequently, the luminaire 50 according to the invention is easy to disassemble and repair, meeting the requirements for right-to-repair.

[0164] Albeit optional, in an alternative embodiment, but depicted figure 3, the housing comprises a compartment and a converter 71 arranged within said compartment, wherein the converter is configured to convert AC power into DC power, wherein the converter is electrically connected to the driver module, wherein the converter is configured to convey the DC power to the driver module.

[0165] Figure 4 depicts schematically, by non-limiting example, an embodiment of a method 80 of stacking a plurality of modules within a luminaire according to the invention. The luminaire comprises a housing comprising a tubular recess extending along a central axis between a light exit plane and a bottom plane. The method comprises a step 81 of stacking a2024PF80389

[0166] 23

[0167] plurality of modules within the tubular recess between the bottom plane and the light exit plane, wherein each of the plurality of modules is arranged coaxial with the central axis, wherein each of the plurality of modules is releasably arranged within the tubular recess of the housing; wherein the tubular recess comprises a recess diameter, wherein each of the plurality of modules comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most halve the recess diameter; wherein the plurality of modules comprises: (i) a light engine module configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD); (ii) a driver module configured to convey power and / or control signals to the light engine module, wherein the driver module and the light engine module are electrically connected.

[0168] Figure 5 depicts schematically, by non-limiting example, an embodiment of a luminaire 90 according to the invention. Figure 5 depicts a cross-sectional sideview. The luminaire 90 comprises a housing 95. The housing 95 comprises a tubular recess 96. The tubular recess 96 extends along a central axis 97 between a light exit plane 98 and a bottom plane 99. The luminaire 90 emits luminaire light 912 in operation, wherein at least part of the luminaire light 912 is conveyed (or: exits) through the light exit plane 98. Moreover, the tubular recess 96 comprises a cross-sectional shape in a plane perpendicular to the central axis 97. Here, said cross-sectional shape is a polygon, more specifically a square.

[0169] Alternatively, said cross-sectional shape may be a circle. The tubular recess 96 comprises a recess apothem 960. Alternatively, said recess apothem may be a recess diameter.

[0170] Referring to figure 5, the luminaire 90 according to the invention comprises a plurality of modules 91, 92, 93, 106 arranged within the tubular recess 96 (e.g. arranged in a stacked configuration). Each of the plurality of modules 91, 92, 93, 106 is arranged coaxial (or: concentric) with the central axis 97 between the bottom plane 99 and the light exit plane 98. Thereby, each of the plurality of modules 91, 92, 93, 106 comprises a respective thickness defined along the direction of the central axis 97. The respective thickness of the plurality of modules 91, 92, 93, 106 is at most the recess apothem 960. Moreover, the plurality of modules 91, 92, 93, 106 are releasably arranged within the tubular recess 96 of the housing 95. This architecture renders a compact luminaire 90, promotes modularity, and facilitates replacement & repair of the luminaire components.

[0171] For example, each module may comprise a mechanical fastening means to mechanically and releasably fasten the respective module to the tubular recess and / or to2024PF80389

[0172] 24

[0173] another module of the plurality of modules. Such a mechanical fastening means may for example be a typical snap fit connection.

[0174] Still referring to figure 5, the plurality of modules comprises a light engine module 91 and a driver module 92. The plurality of modules further comprises an optical module 93 and a sensor module 106. The sensor module 106 is for example optional. The driver module 92 is arranged closer to the bottom plane 97 than the light engine module 91. Alternatively, in addition to the light engine module and the driver module, the plurality of modules may additionally or alternatively comprise a heat sink module and / or a control module.

[0175] The driver module 92 is arranged closer to the bottom plane 97 than the optical module 91 and the sensor module 106. The light engine module 91 is arranged closer to the light exit plane 98 than the optical module 93. Hence, the optical module 93 is arranged between the driver module 92 and the light engine module 91. The sensor module 106 is arranged closer to the light exit plane 98 than the optical module 93. The light engine module 91 comprises a central hole, wherein the sensor module 106 is arranged within the central hole (or: cavity) of the light engine module.

[0176] The light engine module 91 comprises a Light Emitting Diode (LED) 913, alternatively a Laser Diode (LD). Said LED may be a Micro LED. The LED 913 is configured to emit light. Hence, the light engine module 91 provides, in operation, light engine light 911. The light engine light 911 is directed towards the optical module 93. The optical module 93 is configured to transform the light engine light 911 into luminaire light 912, wherein at least one (lighting) property of the light engine light 911 and the luminaire light 912 is different. Therefore, the optical module 93 comprises an optical element 931. Here, the optical element is a reflector 931. The reflector redirects the light engine light 911 into luminaire light 912, thus the (lighting) property of direction is adapted and different for the luminaire light 912. At least part of the luminaire light 912 exits the luminaire 90 through the light exit plane 98.

[0177] The driver module 92 conveys power and / or control signals to the light engine module 91. The driver module 92 is thereby electrically connected to the light engine module 91. More specifically, the tubular recess 96 comprises a recess surface 101. The housing 95 comprises an electrical track 102 at least partly arranged on the recess surface 101. Namely, the electrical track 102 is partly embedded in the housing 95 and comprises electrical connection points 103 arranged on the recess surface 101. The light engine module 91 and the driver module 92 connect to said connection points 103. Thereby, the light engine module2024PF80389

[0178] 25

[0179] 91 and the driver module 92 are electrically connected via said electrical track 102, and the driver module 92 conveys power and / or control signals to said light engine module 91 via said electrical track 102.

[0180] Moreover, the sensor module 106 comprises at least one sensor configured to sense a parameter and output a sensing signal indicative of said parameter. Here, the sensor module 106 comprises a communication unit and conveys said sensing signal wirelessly to an external apparatus via said communication unit. Said communication unit may be an antenna. The communication unit may for example use the wireless modality of Wi-Fi, Bluetooth, ZigBee, Lo-Ra, NFC, RFID, Matter, Thread, Li-Fi, VLC, IR, RF, etc. Alternatively, the sensor module is configured to convey said sensing signal directly to the light engine module via a wired connection. Hence, the light engine module may connect to the sensor module. The at least one sensor may for example be at least one of a PIR sensor, a light sensor, a presence sensor, an occupancy sensor, a Time-of-Flight sensor, a temperature sensor, a camera, a microphone, a thermopile, a thermopile array, a pressure sensor, a tactile sensor. Said pressure sensor may e.g. be a button configured to receive a user input. Said button may switch on or off said LED of the light engine module when the user input is received.

[0181] All in all, considering the above, the luminaire 90 according to the invention comprises a plurality of modules with a sleek and compact form factor. This renders a revolutionary design that transforms traditional lighting solutions into a modular, efficient, and user-friendly technology. The luminaire 90 comprises separate, easily replaceable and upgradeable components all arranged coaxially. Said coaxially may alternatively be concentrically. This architecture is characterized by its modularity, which extends the product life cycle and reduces environmental waste, making it an ideal solution for modern lighting needs. Consequently, the luminaire 90 according to the invention is easy to disassemble and repair, meeting the requirements for right-to-repair.

[0182] Figure 6 depicts schematically, by non-limiting example, an embodiment of a luminaire 610 according to the invention. Figure 6 depicts a cross-sectional sideview. The luminaire 610 comprises a housing 605. The housing 605 comprises a tubular recess 606. The tubular recess 606 extends along a central axis 607 between a light exit plane 608 and a bottom plane 609. The housing 105 further comprises a light exit window 619 arranged in the bottom plane 609. Moreover, the tubular recess 606 comprises a cross-sectional shape in a plane perpendicular to the central axis 607. Here, said cross-sectional shape is a circle.

[0183] Alternatively, said cross-sectional shape may be a polygon, such as a square.2024PF80389

[0184] 26

[0185] The luminaire 610 emits luminaire light in operation, wherein at least part of the luminaire light 611 is conveyed (or: exits) through the light exit plane 608, and at least part of the luminaire light 612 is conveyed (or: exits) through the light exit window 619.

[0186] Referring to figure 6, the luminaire 610 according to the invention comprises a plurality of modules 601, 602, 603, 604 arranged within the tubular recess 606 (e.g. arranged in a stacked configuration). Each of the plurality of modules 601, 602, 603, 604 is arranged coaxial (or: concentric) with the central axis 607 between the bottom plane 609 and the light exit plane 608. The plurality of modules 601, 602, 603, 604 are releasably arranged within the tubular recess 606 of the housing 605. This architecture renders a compact bidirectionally emitting luminaire 610, promotes modularity, and facilitates replacement & repair of the luminaire components.

[0187] For example, each module may comprise a mechanical fastening means to mechanically and releasably fasten the respective module to the tubular recess and / or to another module of the plurality of modules. Such a mechanical fastening means may for example be a typical snap fit connection.

[0188] Still referring to figure 6, the plurality of modules comprises a light engine module 601 and a driver module 602.

[0189] Here, the driver module 602 comprises a central hole, wherein the light engine module 601 is at least partly arranged within the central hole of the driver module 602.

[0190] The light engine module 601 comprises a Light Emitting Diode (LED), alternatively a Laser Diode (LD). The LED is configured to emit light engine light. More specifically, the light engine light comprises first light engine light 671 and second light engine light 672. The light engine module 101 is configured to, in operation, emit said first light engine light 671 and said second light engine light 672. The light engine module 601 is configured to emit, in operation, the first light engine light 671 towards the light exit plane 608 and the second light engine light 672 towards the light exit window 619.

[0191] The driver module 602 conveys power and / or control signals to the light engine module 601. The driver module 602 is thereby electrically connected to the light engine module 601. More specifically, the tubular recess 606 comprises a recess surface 660. The housing 605 comprises an electrical track 670 at least partly arranged on the recess surface 660. The light engine module 601 and the driver module 602 are electrically connected via said electrical track 670, and the driver module 602 conveys power and / or control signals to said light engine module 601 via said electrical track 670.2024PF80389

[0192] 27

[0193] Optionally, but still depicted in figure 6, the plurality of modules comprises a first optical module 603 and a second optical module 604. The first optical module 604 is arranged closer the light exit plane 608 than the light engine module 601. The second optical module 604 is arranged closer to the light exit window 619 than the light engine module 601. The first optical module 601 is configured to transform the first light engine light 671 into first luminaire light 611. The second optical module 604 is configured to transform the second light engine light 672 into second luminaire light 612. Without such optical modules, the respective light engine light may be part of the respective luminaire light. Here, the first luminaire light 612 and the second luminaire light 611 may be different in lighting properties. The first light engine light 671 and the second light engine light 672 may also be different in lighting properties. For example, the first light engine light and / or the first luminaire light may comprise a higher correlated color temperature (CCT) than the second light engine light and / or the second luminaire light - or vice versa. Such a luminaire 610 may be advantageous for providing bi-directional light via a modular architecture.

[0194] Moreover, albeit optically, the first optical module and the second optical module may be different in optical properties. The first optical module and / or the second optical module may secure the other plurality of modules to the tubular recess. For example, the first optical module and / or the second optical module may each comprise a respective screw thread for releasably connecting the optical module to the housing within or on the tubular recess of the housing.

[0195] Figure 7 depicts schematically, by non-limiting example, an embodiment of a luminaire 710 according to the invention. Figure 7 depicts a cross-sectional sideview. The luminaire 710 comprises a housing 705. The housing 705 comprises a tubular recess 706. The tubular recess 706 extends along a central axis 707 between a light exit plane 708 and a bottom plane 709. The housing 705 further comprises a light exit window 719 arranged in the bottom plane 709. Moreover, the tubular recess 706 comprises a cross-sectional shape in a plane perpendicular to the central axis 707. Here, said cross-sectional shape is a circle.

[0196] Alternatively, said cross-sectional shape may be a polygon, such as a square.

[0197] Referring to figure 7, the luminaire 610 according to the invention comprises a plurality of modules 701, 702, 703 arranged within the tubular recess 706 (e.g. arranged in a stacked configuration). Each of the plurality of modules 701, 702, 703 is arranged coaxial (or: concentric) with the central axis 707 between the bottom plane 709 and the light exit plane 708. The plurality of modules 701, 702, 703 are releasably arranged within the tubular2024PF80389

[0198] 28

[0199] recess 706 of the housing 705. This architecture renders a compact bi-directionally emitting luminaire 710, promotes modularity, and facilitates replacement & repair of the luminaire components.

[0200] For example, each module may comprise a mechanical fastening means to mechanically and releasably fasten the respective module to the tubular recess and / or to another module of the plurality of modules. Such a mechanical fastening means may for example be a typical snap fit connection.

[0201] Still referring to figure 7, the plurality of modules comprises a light engine module 701, a driver module 702, and a further light engine module 703.

[0202] Here, the driver module 702 is arranged in between the light engine module 701 and the further light engine module 703.

[0203] The light engine module 701 comprises a Light Emitting Diode (LED), alternatively a Laser Diode (LD). The (LED of the) light engine module 701 is configured to emit light engine light 711 towards the light exit plane 708.

[0204] The further light engine module 703 comprises a Light Emitting Diode (LED), alternatively a Laser Diode (LD). The (LED of the) further light engine module 703 is configured to emit further light engine light 712 towards the light exit window 719.

[0205] The driver module 702 conveys power and / or control signals to the light engine module 701 and the further light engine module 702. The driver module 702 is thereby electrically connected to the light engine module 701 and the further light engine module 703. More specifically, the tubular recess 706 comprises a recess surface 760. The housing 705 comprises an electrical track 770 at least partly arranged on the recess surface 760. The light engine module 701, the further light engine module 703, and the driver module 702 are electrically connected via said electrical track 770, and the driver module 702 conveys power and / or control signals to said light engine module 701 and the further light engine module via said electrical track 670. The light engine module 701 and the further light engine module 703 may be controlled (or: operated) independently, e.g. individually and separately. For example, the light engine module and the further light engine module may emit the respective light engine light and further light engine light with different lighting properties, or for example at different moments in time.

Claims

2024PF8038929CLAIMS:

1. A luminaire (10) comprising a plurality of modules (1, 2, 3) and a housing (5), wherein the housing (5) comprises a tubular recess (6) extending along a central axis (7) between a light exit plane (8) and a bottom plane (9);wherein the plurality of modules (1, 2, 3) is arranged within the tubular recess (6) between the bottom plane (9) and the light exit plane (8), wherein each of the plurality of modules is arranged coaxial with the central axis (7);wherein the tubular recess (6) comprises a recess diameter (16), wherein each of the plurality of modules comprises a respective thickness (11, 12, 13) defined along the direction of the central axis (7), wherein the respective thickness (11, 12, 13) is at most halve the recess diameter (16);wherein the plurality of modules comprises:(i) a light engine module (1) configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD);(ii) a driver module (2) configured to convey power and / or control signals to the light engine module (1), wherein the driver module (2) and the light engine module (1) are electrically connected;wherein each of the plurality of modules (1, 2, 3) is releasably arranged within the tubular recess of the housing (5);wherein the tubular recess (6) comprises a recess surface; wherein the housing (5) comprises an electrical track at least partly arranged on the recess surface; wherein the light engine module (1) and the driver module (2) are electrically connected via said electrical track.

2. The luminaire according to claim 1, wherein each of the plurality of modules (1, 2, 3) comprises at least one planar surface perpendicular to the central axis.2024PF80389303. The luminaire according to claim 2, wherein the light engine module (1) comprises a first planar surface (14) perpendicular to the central axis (7); wherein the driver module (2) comprises a second planar surface (15) perpendicular to the central axis (7);wherein the first planar surface (14) abuts the second planar surface (15) when the plurality of modules is arranged within the tubular recess (6);wherein the first planar surface (14) is in thermal contact with the second planar surface (15) when the plurality of modules is arranged within the tubular recess (6).

4. The luminaire according to any one of the preceding claims 1-3, wherein the driver module comprises a central hole, wherein at least part of the light engine module is arranged within the central hole of the driver module .

5. The luminaire according to any one of the preceding claims 1-3, wherein the light engine module comprises a central hole, wherein the driver module is arranged within the central hole of the light engine module.

6. The luminaire according to any one of the preceding claims 4-5, wherein the housing comprises a light exit window arranged in the bottom plane;wherein the light engine light comprises first light engine light and second light engine light, wherein the light engine module is configured to emit, in operation, the first light engine light towards the light exit plane and the second light engine light towards the light exit window.

7. The luminaire according to any one of the preceding claims 4-5, wherein the housing comprises a light exit window arranged in the bottom plane;wherein the plurality of modules comprises:(vi) a further light engine module configured to provide, in operation, further light engine light, wherein the further light engine module comprises at least one of a Light Emitting Diode (LED) and Laser Diode (LD);wherein the driver module is configured to convey power and / or control signals to the further light engine module, wherein the driver module and the further light engine module are electrically connected;wherein the further light engine module and the driver module are electrically connected via said electrical track.2024PF8038931wherein the further light engine module is arranged closer to the bottom surface than another module of the plurality of modules;wherein the light engine module is configured to emit, in operation, the light engine light towards the light exit plane and the further light engine light towards the light exit window.

8. The luminaire according to any one of the preceding claims, wherein the plurality of modules further comprises:(iii) an optical module configured to transform the light engine light into luminaire light, wherein at least one property of the light engine light and the luminaire light is different;wherein at least part of the luminaire light exits through the light exit plane.

9. The luminaire according to claim 8, wherein the optical module is arranged closer to the light exit plane than another module of the plurality of modules.

10. The luminaire according to claim 9, wherein the optical module secures at least one other module of the plurality of modules within the tubular recess.

11. The luminaire according to any one of the preceding claims, wherein the plurality of modules further comprises:(iv) a heat sink module configured to convey heat from at least one other module of the plurality of modules.

12. The luminaire according to any one of the preceding claims, wherein the tubular recess comprises a cross-sectional shape in a plane perpendicular to the central axis, wherein said cross-sectional shape is a circle;wherein each of the plurality of modules comprises a respective circumference, wherein at least part of the circumference is conformal to the cross-sectional shape of the tubular recess.

13. The luminaire according to any one of the preceding claims, wherein each of the plurality of modules comprises a respective fastening means configured to releasably connect the respective module to the housing within the tubular recess of the housing (5).2024PF803893214. The luminaire according to any one of the preceding claims, wherein the housing comprises a compartment and a converter arranged within said compartment, wherein the converter is configured to convert AC power into DC power, wherein the converter is electrically connected to the driver module, wherein the converter is configured to convey the DC power to the driver module.

15. A method of stacking a plurality of modules within a luminaire, wherein the luminaire comprises a housing comprising a tubular recess extending along a central axis between a light exit plane and a bottom plane;wherein the method comprises:- stacking a plurality of modules within the tubular recess between the bottom plane and the light exit plane, wherein each of the plurality of modules is arranged coaxial with the central axis, wherein each of the plurality of modules is releasably arranged within the tubular recess of the housing;wherein the tubular recess comprises a recess diameter, wherein each of the plurality of modules comprises a respective thickness defined along the direction of the central axis, wherein the respective thickness is at most halve the recess diameter;wherein the plurality of modules comprises:(i) a light engine module configured to provide, in operation, light engine light, wherein the light engine module comprises at least one of a Light Emitting Diode (LED) and a Laser Diode (LD);(ii) a driver module configured to convey power and / or control signals to the light engine module, wherein the driver module and the light engine module are electrically connected.

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