Protected QR code
Patent Information
- Application Number
- PCT/EP2026/053996
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-26
- Filing Date
- 2026-02-13
- Publication Date
- 2026-09-03
Smart Images
Figure EP2026053996_03092026_PF_FP_ABST
Abstract
Description
[0001] 2025PF80082
[0002] 1
[0003] Protected QR code
[0004] FIELD OF THE INVENTION
[0005] The invention relates to a lighting system comprising a luminaire comprising a QR code. The invention further relates to a luminaire comprising a QR code.
[0006] BACKGROUND OF THE INVENTION
[0007] It is known to provide optical patterns on luminaires and lighting system / luminaire components, so as to access and retrieve information. For example, Quick Response (QR) codes are widely used for various purposes. Due to the large-scale adoption of Light Emitting Diode (LED) lighting, the product lifetime of luminaires and lighting systems has significantly increased. For example, it is not uncommon for luminaires to have a lifetime of 15 to 20 years. Such luminaires may even be operated longer, but at decreased light output.
[0008] Consequently, due to such longer product lifetimes, especially for outdoor luminaires, the optical patterns may degrade over time due to ambient conditions, such as weather and wear. This may lead to the disadvantageous situation that such optical patterns may not be readable, or not sufficiently readable, thereby losing their function. During the longer product lifetimes, the access to such optical patterns should also be controlled.
[0009] It is an object of the invention to provide an improved lighting system or an improved luminaire, which at least alleviates one or more of the problems and disadvantages mentioned above.
[0010] SUMMARY OF THE INVENTION
[0011] According to a first aspect, the invention provides a lighting system comprising a luminaire configured to provide, in operation, luminaire light. The luminaire comprises: (i) a solid-state light source configured to emit, in operation, light source light; (ii) a housing which houses the solid-state light source; (iii) a first structure surface; and (v) a first optical pattern (e.g. a QR code) configured to provide access to first system information and / or to trigger a first system action. The first optical pattern is arranged on the first structure surface, wherein in a first mode of the luminaire the first optical pattern is readable2025PF80082
[0012] 2
[0013] by an imaging device; and wherein in a second mode of the luminaire the first optical pattern is not readable by the imaging device. The obtained effect is that access to the first optical pattern may be controlled, e.g. during the lifetime of the luminaire.
[0014] In preferred embodiments, the luminaire light comprises the light source light. Hence, the invention may provide: A lighting system comprising a luminaire configured to provide, in operation, luminaire light, the luminaire comprises: a solid-state light source configured to emit, in operation, light source light; a housing housing the solid-state light source; a first structure surface; and a first optical pattern configured to provide access to first system information and / or to trigger a first system action; wherein the first optical pattern is arranged on the first structure surface; wherein in a first mode of the luminaire the first optical pattern is readable by an imaging device, and in a second mode of the luminaire the first optical pattern is not readable by the imaging device.
[0015] The system information may comprise one or more of product information, historic information, maintenance information, location information, and access information. The first system action may comprise at least one of: a diagnostics check of the lighting system and / or the luminaire, a reset of the lighting system and / or the luminaire, a reconfiguration of the lighting system and / or the luminaire, a shutdown of the lighting system and / or the luminaire, identifying or assigning a status to the lighting system and / or the luminaire, a commissioning step of the lighting system and / or the luminaire, a registration step. Other actions may be envisioned similarly.
[0016] In a preferred embodiment, the luminaire further comprises (iv) a protective cover. The first optical pattern is arranged between the protective cover and the first structure surface. The protective cover is transparent such that in a first mode of the luminaire the first optical pattern is readable through the protective cover by an imaging device such as e.g. a scanner or a camera; and in a second mode of the luminaire the first optical pattern may not be readable (through the protective cover) by the imaging device. The protective cover covers the first optical pattern and is configured to protect the first optical pattern e.g. against (i) ingress of dust, oxygen and / or water, (ii) UV radiation and / or (iii) IR radiation.
[0017] Hence, the invention may provide: A lighting system comprising a luminaire configured to provide, in operation, luminaire light, the luminaire comprises: a solid-state light source configured to emit, in operation, light source light; a housing housing the solid-state light source; a first structure surface; a protective cover, and a first optical pattern configured to provide access to first system information and / or to trigger a first system action; wherein the first optical pattern is arranged between the protective cover and the first2025PF80082
[0018] 3
[0019] structure surface; wherein the protective cover is transparent such that in a first mode of the luminaire the first optical pattern is readable through the protective cover by an imaging device, and in a second mode of the luminaire the first optical pattern may not be readable (through the protective cover) by the imaging device; and wherein the protective cover covers the first optical pattern and is configured to protect the first optical pattern against ingress of dust, oxygen and / or water, UV radiation and / or IR radiation. In embodiments, the protective cover may comprise an optics configured to redirect the light source light emitted by the solid-state light source. The obtained effect is an improved luminaire architecture e.g. being more compact. The reason is that the cover and optical function are combined / integrated. The optics may also be labelled optical segment or optical segments.
[0020] In embodiments, the protective cover may be transparent for visible light. Hence, the protective cover may block UV light and / or Infrared Light.
[0021] In some embodiments, the protective cover may comprise an average cover thickness, for example defined in the direction perpendicular to the optical pattern, wherein the average cover thickness is at most 1 millimeters, such as for example 0.5 millimeters, preferably at most 0.4 millimeters, preferably between 0.05 and 0.4 millimeters. Said average cover thickness may for example be between 0.1 and 0.3 millimeters, such as 0.2 millimeters.
[0022] In embodiments, the optics may comprise a light guide e.g. a light guide panel. The obtained effect is a further improved luminaire architecture. The reason is that a light guide (plate) has a shape which is very suitable to cover the first optical pattern.
[0023] In embodiments, the light guide may comprise a first major surface and a second major surface opposite to the first major surface. The first major surface may face away from the first optical pattern and the second major surface may face the first optical pattern. The light guide may further comprise one or more side faces bridging a distance between the first major surface and the second major surface. The light guide may comprise light outcoupling elements, wherein the light outcoupling elements are arranged in the light guide, and / or on the first major surface, and / or on the second major surface, wherein the light outcoupling elements are configured to facilitate light outcoupling from the light guide. The solid-state light source and the light guide may be configured such that in a first operational mode of the luminaire (a) at least part of the light source light enters the light guide via at least one of the one or more side faces to provide incoupled light source light, wherein the light guide is configured to guide the incoupled light source light via total internal reflection, and (b) at least part of the incoupled light source light is coupled out from the light guide via the first major surface. The first optical pattern may be arranged below e.g. covered by the2025PF80082
[0024] 4
[0025] light outcoupling elements. The obtained effect is that the protected first optical pattern (e.g. the protected QR code) provides (homogeneous) light.
[0026] In embodiments, the light outcoupling elements may be smaller in size (e.g. length or diameter or equivalent diameter) than each individual segment of the first optical pattern, for example, each light outcoupling element may have a size smaller than 1mm, preferably smaller than 0.5 mm, more preferably smaller than 0.3 mm, most preferably smaller than 0.1 mm. The light outcoupling elements may be light scattering particles and / or a light scattering pattern e.g. reflective dots or structures. The obtained effect is improved readability of the first optical pattern through the protective cover, while providing high quality light e.g. homogeneous lighting.
[0027] In embodiments, the optics may be configured to redirect the light source light in a direction facing away from the first optical pattern. The obtained effect is that the first optical pattern is not readable through the protective cover by the imaging device. Thus, a person may only have access with the imaging device to the first optical pattern when the solid-state light source is switched off (or have a relatively low intensity). When the solid-state light source is switch on (and having a relatively high intensity) the imaging device may be over-exposed and the first optical pattern is not readable through the protective cover by the imaging device.
[0028] In embodiments, the luminaire light comprises the light source light, and the luminaire light may be white light having a correlated color temperature in a range from 2000K to 6500K (or in a range from 2500K to 4500K) and a color rendering index of at least 70 or at least 80. The obtained effect is improved light quality e.g. improved readability of one or more items e.g. a second optical pattern illuminated below the luminaire.
[0029] In embodiments, the lighting system may further comprise the imaging device. The imaging device may comprise a camera. The image device may comprise or is a mobile phone. The obtained effect is increased flexibility of the lighting system. The reason is that many persons may have access to scan the first optical pattern. In embodiments, the first optical pattern may comprise or is a Quick Response (QR) code. QR codes may have several advantages, including one or more of the following: (1.) Quick and easy access: QR codes allow users to quickly access information by simply scanning the code with a smartphone or other device. (2.) Versatility: QR codes can be used in a wide range of applications, from marketing and advertising to ticketing, payments, and inventory management. (3.) Cost-effective: Creating and using QR codes is relatively inexpensive compared to other technologies, making it a cost-effective solution for businesses. (4.) Traceability: QR codes2025PF80082
[0030] 5
[0031] can be used to track and monitor products, assets, and other items, providing valuable data for businesses. (5.) Contactless interaction: QR codes enable contactless interaction, which is especially important in situations where physical contact is limited or not recommended, such as during the COVID-19 pandemic. Overall, QR codes provide a convenient and efficient way to access information and interact with the physical world using digital technology.
[0032] In an embodiment, the first optical pattern may be a static optical pattern. In examples, the first optical pattern is configured to at least partly transmit and / or at least partly reflect the light source light and / or the luminaire light.
[0033] As mentioned, in a second mode of the luminaire the first optical pattern may not be readable (through the protective cover) by the imaging device. The obtained effect is that access to the first optical pattern may be controlled. In first time intervals the first optical pattern may not be readable, while in second interval the first optical pattern may be readable.
[0034] In a preferred embodiment, the luminaire light may comprise the light source light. In a preferred embodiment, the structure surface may be a light exit window, wherein the light exit window is configured to convey the luminaire light (to the ambient). For example, the light exit window may comprise an input surface configured to receive the light source light and an output surface configured to output (the light source light as) the luminaire light.
[0035] In a related embodiment, in the first mode of the luminaire, the luminaire is configured to provide luminaire light with a first property of a lighting characteristic; and, in the second mode of the luminaire, the luminaire is configured to provide luminaire light with a second property of the lighting characteristic; wherein the first property of the lighting characteristic is different to the second property of the lighting characteristic.
[0036] In preferred embodiments, said lighting characteristic comprises at least one of a lighting intensity, a lighting pattern, a lighting directionality, a lighting spectrum, a lighting color, a correlated color temperature, a polarization, a light scene, a light recipe.
[0037] In embodiments, in the second mode of the luminaire the luminaire may provide luminaire light having a first intensity, II, and (ii) in the first mode of the luminaire the luminaire may provide no luminaire light or luminaire light having a second intensity, 12, wherein I2<0.5-11 or I2<0.1 -Il . The obtained effect is that access to the first optical pattern may be controlled. In first time intervals the first optical pattern may not be readable, while in second interval the first optical pattern may be readable.2025PF80082
[0038] 6
[0039] For example, in such a second mode of operation, the first intensity, II, may be at least 4 lm / cm2.
[0040] Hence, in the second mode of the luminaire the first optical pattern may not be readable (e.g. through the protective cover) by the imaging device, and in the first mode of the luminaire the first optical pattern may be readable (e.g. through the protective cover) by the imaging device. In alternative embodiments, in the second mode of the luminaire the luminaire may provide luminaire light having a first intensity, II, or no luminaire light at all, and in the first mode of the luminaire the luminaire may provide having a second intensity, 12; wherein Il<0.5-12 or Il<0.1 -12. Hence, in the first mode of the luminaire, when the luminaire light has the second intensity 12, for example only when there is a predetermined intensity of luminaire light, the first optical pattern may be readable. Conversely, in the second mode of the luminaire, when the luminaire light has a first intensity, II, for example when there is no intensity at all or an intensity below the second intensity, 12, the first optical pattern may not be readable.
[0041] Hence, considering this alternative embodiment, the first optical pattern (i.e. e.g. the static QR code) only becomes readable for the imaging device if in the first mode the intensity of the light is above a predetermined intensity of luminaire light - and the first optical pattern becomes not readable for the imaging device if in the second mode the intensity of the light is below said predetermined intensity of luminaire light. Such embodiments may be advantageous, as the first optical pattern only becomes readable with the desired lighting intensity conditions. Moreover, such a first optical pattern (e.g. static QR code) is not readable by an imaging device when the light source is off.
[0042] Said lighting characteristic may comprise Correlated Color Temperature (CCT). In an embodiment, in the first mode of the luminaire, the luminaire provides luminaire light having a first Correlated Color Temperature, CCT1; and, in the second mode of the luminaire, the luminaire provides luminaire light having a second Correlated Color Temperature, CCT2; wherein CCT2 > CCT1, or wherein CCT2 < CCT1. Hence, in the former option, the first optical pattern is only readable by an imaging device if the CCT is above a predetermined CCT, and not readable by an imaging device if the CCT is below said predetermined CCT. Hence, in the latter option, the first optical pattern is only readable by an imaging device if the CCT is below a predetermined CCT, and not readable by an imaging device if the CCT is above said predetermined CCT. For example, in the first mode of the luminaire, the luminaire light may comprise a first CCT of 2000K, wherein the first optical pattern is readable by an imaging device, and when in the second mode of the luminaire the2025PF80082
[0043] 7
[0044] luminaire light becomes 3000K, the first optical pattern may not be readable. Similar examples may be envisioned similarly.
[0045] Said lighting characteristic may comprise lighting color, or color point. In an embodiment, in the first mode of the luminaire, the luminaire provides luminaire light having a first color point (xl,yl), and in the second mode of the luminaire, the luminaire provides luminaire light having a second color point (x2,y2); wherein the first color point and the second color point differ at least by Ax = |x2-xl| >0.05 and Ay = |y2-y 11 >0.05. In such embodiments, the first optical pattern may comprise the same color as the first color point.
[0046] Said lighting characteristic may comprise a light recipe. In an embodiment, in the first mode of the luminaire, the luminaire provides luminaire light having a first light recipe, Rl, and in the second mode of the luminaire, the luminaire provides luminaire light having a second light recipe, R2, wherein the first light recipe, Rl, and the second light recipe, R2, are different.
[0047] Said lighting characteristic may comprise a light spectrum. In an embodiment, in the first mode of the luminaire, the luminaire provides luminaire light having a first light spectrum, SI, and in the second mode of the luminaire, the luminaire provides luminaire light having a second light spectrum, S2, wherein the first light spectrum, SI, and the second light spectrum, S2, are different. For example, the first light spectrum, SI, may be at least 20 nm different from the second light spectrum, S2.
[0048] For example, the first optical pattern may be a luminescent first optical pattern, wherein the luminescent first optical pattern is excitable with light source light and / or the luminaire light having the first spectrum in the first mode of the luminaire. Hence, the first optical pattern is only readable in the first mode of the luminaire, when the luminaire light having the first light spectrum excites the luminescent first optical pattern. Said first light spectrum may be an ultraviolet light spectrum. The light source light may be ultraviolet light.
[0049] Said lighting characteristic may comprise a lighting directionality. In an embodiment, in the first mode of the luminaire, the luminaire provides back-lit luminaire light, and in the second mode of the luminaire, the luminaire provides side-lit luminaire light. In an embodiment, in the first mode of the luminaire, the luminaire provides luminaire light having a first light directionality, DI, and in the second mode of the luminaire, the luminaire provides luminaire light having a second light directionality, D2, wherein the first light directionality, DI, and the second light directionality, D2, are different. For example, the first2025PF80082
[0050] 8
[0051] light directionality, DI, may be at least 20 degrees different from the second light directionality, D2.
[0052] For example, the light exit window may comprise an area comprising the first optical pattern, wherein the first optical pattern comprises a refractive or a diffractive pattern providing a spatial light distribution, e.g. using a photonic grating or e.g. the light exit window rendering a light directionality relative to a main light axis of at least 20 degrees, wherein the main light axis is perpendicular to the light exit window. The refraction / diffraction pattern can have different light redirection properties for different light recipes as well.
[0053] Said lighting characteristic may comprise a light pattern. In an embodiment, in the first mode of the luminaire, the luminaire provides luminaire light having a first light pattern, Pl, and in the second mode of the luminaire, the luminaire provides luminaire light having a second light pattern, P2, wherein the first light pattern, Pl, and the second light pattern, P2, are different. Said light pattern may alternatively be a light polarization.
[0054] In embodiments, the protective cover may comprise an electro-optical element. In the second mode of the luminaire the electro-optical element may be nontransparent. In the first mode of the luminaire the electro-optical element may be transparent. The obtained effect is that access to the first optical pattern may be controlled. In first time intervals the first optical pattern may not be readable, while in second interval the first optical pattern may be readable.
[0055] In embodiments, the electro-optical element may comprise one or more of a liquid-crystal based element, an electro-chromic based element, an electro-wetting element, electro-phoretic element. The obtained effect is that access to the first optical pattern may be controlled. In first time intervals the first optical pattern may not be readable, while in second interval the first optical pattern may be readable.
[0056] In embodiments, the protective cover may be sealed (e.g. gastight) with a seal such that the first optical pattern is arranged in a sealed enclosure comprising a gas. The obtained effect is improved protected first optical pattern. The reason is that the first optical pattern is protected against ingress of particulate matter e.g. dust, oxygen and / or water. These substances may deteriorate the quality of the first optical pattern e.g. oxidate the first optical pattern (over lifetime). In embodiments, the seal may be a glass seal. In embodiments, the protective cover may be a glass protective cover. In embodiments, the protective cover may abut the first optical pattern. Alternatively, there may be a non-zero distance between the protective cover and the first optical pattern e.g. a distance of at least 1 or at least 3 mm. In2025PF80082
[0057] 9
[0058] embodiments, the first structural surface may be larger than the first optical pattern.
[0059] Especially in the latter case, the first structural surface may be metallic or white for improved reflectivity e.g. it may reflect part of the light source light.
[0060] In embodiments, the gas may comprise a different gas composition than air. The gas may comprise a higher Helium (He) content (e.g. concentration) than air e.g. a difference of at least 1% or at least 5% or at least 10%. Preferably the gas may comprise at least 10% He, at least 30% He or at least 50% He. The obtained effect is improved cooling / improved thermal management such that the quality of the first optical pattern e.g. QR code is better maintained.
[0061] In embodiments, the first optical pattern e.g. QR code may be free from a black pattern. In embodiments, part of the light source light may impinge of the first optical pattern e.g. QR code. The obtained effect is improved efficiency. The reason is that conventional QR codes have a black pattern. When part of the light source light impinges on the black pattern a (major) part of the light source light may be lost.
[0062] In embodiments, the first optical pattern e.g. QR code may comprise a white background and a colored pattern, wherein the colored pattern is yellow or green or greenyellow. The obtained effect is improved efficiency. The reason is that white light contains much green-yellow light which is reflected by the colored pattern.
[0063] In embodiments, the first optical pattern e.g. QR code may comprises a metal layer or metal pattern. The metal layer or metal pattern may comprise aluminum and / or silver. The obtained effect is improved efficiency e.g. when part of the light source light impinges onto the metal layer / pattern. Such a metal layer / pattern may be susceptible to degradation / deteri oration and needs to be protected.
[0064] In embodiments, the housing may comprise the first structure surface, or the first structure surface may be external to the housing.
[0065] In embodiments, the luminaire may further comprise a controller. The controller may be configured to control the solid-state light source e.g. based on the first system information and / or the first system action. For example, when the first optical pattern e.g. QR code is read by the image device e.g. scanner, one or more lighting properties of the light source light may be altered / changed. The lighting properties may comprise one or more of a color point, correlated color temperature, color rendering index, light intensity. The controller may be arranged outside the sealed enclosure. Electrical connections may be arranged through said sealed enclosure. The electrical connections may electrically connect the controller with the solid-state light source. In embodiments, the solid-state light source2025PF80082
[0066] 10
[0067] may comprise a first LED light source emitting first LED light and a second LED light source emitting second LED light, and optionally a third LED light source emitting third LED light. For example, the first LED light may be white light have a first correlated color temperature, CCT1, and the second LED light may be white light having a second correlated color temperature, CCT2, wherein CCT2-CCT>500K. Or, for example, the first LED light may be red light, the second LED light may be blue light, and the third light may be green light. By individually controlling the first, second and, when applicable, the third LED light source, the color point and / or the correlated color temperature of the luminaire light can be controlled. The term “system information” - such as used in the first system information and the second system information - may herein refer to any information related to the system, especially to the luminaire (or: light generating device). The system information may, in embodiments, comprise one or more of product information, historic information, maintenance information, location information, and (control) access information. In embodiments, the system information may comprise one or more of product information, historic information, maintenance information, location information, and (control) access information.
[0068] Hence, in aspects, the system information may comprise product information, especially in relation to the luminaire (or: light generating device). The term “product information” may, for instance, comprise one or more of a product type, a product number, a product identification code, a batch number, etc. The product information may, for instance, be suitable for identifying the product and ordering replacement products and / or replacement product parts. In embodiments, the product information may comprise installation(-related) information. In further embodiments, the product information may comprise assembly information.
[0069] In further embodiments, the system information may comprise historic information, especially in relation to the luminaire (or: light generating device). The term “historic information” may herein refer to information related to the history of the specific system (or device). For instance, the historic information may include information on (a) shipping of the system (or components thereof), (b) assembly of the system, optionally including information on the date, time, location, and assembler, (c) operational performance, (d) maintenance events, e.g., including information on what was fixed / replaced when and by whom, and (e) malfunction events. The historic information may, for instance, be useful for troubleshooting, identifying malfunctioning parts, and evaluating overall performance.2025PF80082
[0070] 11
[0071] In further embodiments, the system information may comprise maintenance information, especially in relation to the luminaire (or: light generating device). The term “maintenance information” may herein refer to information relevant for maintenance of the system. For instance, the maintenance information may comprise information on component status, e.g., including expected remaining lifetime. The maintenance information may be particularly useful for a maintenance engineer to determine the suitable actions when performing maintenance on the system.
[0072] In further embodiments, the system information may comprise location information, especially in relation to the luminaire (or: light generating device). The term “location information” may herein refer to information on the location and / or intended location of the system. For instance, the location information may comprise coordinates, such as Global Positioning System (GPS) coordinates, or relative positioning information. The location information may facilitate determining whether the correct system is being checked and may facilitate location-specific control of the system.
[0073] In further embodiments, the system information may comprise access information, especially in relation to the luminaire (or: light generating device). The term “access information” (or “control access information”) may herein refer to information granting (partial) access to the system, especially to operational settings of the system, such as of the luminaire (or: light generating device). In embodiments, the access information may comprise information granting (partial) access to a control system or system controller. For instance, the control system or system controller may be configured to (adjust) control (or “adjust settings”) of the luminaire (or: light generating device) when receiving corresponding control input comprising an access key, wherein the access information comprises such access key. For example, the control system may be configured to, upon receiving the control input, control, especially adjust a setting of the luminaire (or: light generating device), wherein the setting comprises one or more of intensity, a time schedule, a color temperature, etc.
[0074] In further aspects, the invention may provide: A luminaire comprising a first location, a protective cover, and a first optical pattern configured to provide, or provide access to, first system information and / or to trigger a first system action; wherein the first optical pattern is arranged at the first location; wherein the protective cover is transparent for the first optical pattern; wherein the protective cover is at least partly disposed over the first optical pattern and configured to shield at least part of the first optical pattern from the ambient. In aspects, the protective cover may abut the first optical pattern. In aspects, the2025PF80082
[0075] 12
[0076] protective cover blocks UV radiation and / or IR radiation. In aspects, the protective cover is removable. In aspects, the protective cover comprises an adhesive surface configured to connect the protective cover to the first optical pattern and / or the first location. In aspects, the protective cover may be a sticker. In aspects, the first optical pattern may be a sticker. In aspects, the luminaire may be an outdoor luminaire.
[0077] BRIEF DESCRIPTION OF THE DRAWINGS
[0078] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:
[0079] Figs. 1 A-B schematically depict an embodiment of the lighting system;
[0080] Fig. 2 schematically depicts an embodiment of the lighting system;
[0081] Figs. 3 A-B schematically depict an embodiment of the lighting system and part of the luminaire, respectively;
[0082] Fig. 4 schematically depicts an embodiment of (part of) the luminaire;
[0083] Fig. 5 schematically depicts an embodiment of the lighting system; and Fig. 6 schematically depicts an embodiment of (part of) the lighting system. The schematic drawings are not necessarily to scale.
[0084] DETAILED DESCRIPTION OF THE EMBODIMENTS
[0085] Figs. 1 A-B schematically depict embodiments of a lighting system 200 comprising a luminaire 100 according to the invention. The luminaire is configured to provide, in operation, luminaire light. As shown in Fig.l, the luminaire 100 comprises: (i) a solid-state light source 10 configured to emit, in operation, light source light; (ii) a housing 11 which houses the solid-state light source 10; (iii) a first structure surface 12; (iv) a protective cover 13; and (v) a first optical pattern 14 (e.g. a QR code 26) configured to provide access to first system information and / or to trigger a first system action. The system information may comprise one or more of product information, historic information, maintenance information, location information, and access information. The first system action may comprise at least one of: a diagnostics check of the lighting system and / or the luminaire, a reset of the lighting system and / or the luminaire, a reconfiguration of the lighting system and / or the luminaire, a shutdown of the lighting system and / or the luminaire, identifying or assigning a status to the lighting system and / or the luminaire, a commissioning step of the lighting system and / or the luminaire. The first optical pattern 14 is arranged2025PF80082
[0086] 13
[0087] between the protective cover 13 and the first structure surface 12. The protective cover 13 is transparent such that in a first mode of the luminaire 100 the first optical pattern 14 is readable through the protective cover 13 by an imaging device 17 such as e.g. a scanner or a camera 25. The protective cover 13 covers the first optical pattern 14 and is configured to protect the first optical pattern 14 e.g. against (i) ingress of dust, oxygen and / or water, (ii) UV radiation and / or (iii) IR radiation.
[0088] In embodiments, and as depicted in Fig.2, the protective cover 13 may comprise an optics 18 configured to redirect the light source light emitted by the solid-state light source 10. The obtained effect is an improved luminaire architecture e.g. being more compact. The reason is that the cover and optical function are combined / integrated.
[0089] In embodiments, and as depicted in Fig.3A-B, the optics 18 may comprise a light guide 19 e.g. a light guide panel. The obtained effect is a further improved luminaire architecture. The reason is that a light guide (plate) 19 has a shape which is very suitable to cover the first optical pattern 14.
[0090] In embodiments, and as depicted in Fig.3A-B, the light guide 19 may comprise a first major surface 20 and a second major surface 21 opposite to the first major surface 20. The first major surface 20 may face away from the first optical pattern 14 and the second major surface 21 may face the first optical pattern 14. The light guide 19 may further comprise one or more side faces 22 bridging a distance, d, between the first major surface 20 and the second major surface 21. The light guide 19 may comprise light outcoupling elements 23, wherein the light outcoupling elements 23 are arranged in the light guide 19, and / or on the first major surface 20, and / or on the second major surface 21, wherein the light outcoupling elements 23 are configured to facilitate light outcoupling from the light guide 19. The solid-state light source 10 and the light guide 19 may be configured such that in a first operational mode of the luminaire 100 (a) at least part of the light source light enters the light guide 19 via at least one of the one or more side faces 22 to provide incoupled light source light, wherein the light guide 19 is configured to guide the incoupled light source light via total internal reflection (TIR), and (b) at least part of the incoupled light source light is coupled out from the light guide 19 via the first major surface 20. The first optical pattern 14 may be arranged below e.g. covered by the light outcoupling elements 23. The obtained effect is that the protected first optical pattern 14 (e.g. the protected QR code 26) provides (homogeneous) light.
[0091] In embodiments, and as depicted in Fig.3A-B, the light outcoupling elements 23 may be smaller in size (e.g. length or diameter or equivalent diameter) than each2025PF80082
[0092] 14
[0093] individual segment 24 of the first optical pattern 14. The light outcoupling elements 23 may be light scattering particles and / or a light scattering pattern e.g. reflective dots or structures. The obtained effect is improved readability of the first optical pattern through the protective cover, while providing high quality light e.g. homogeneous lighting.
[0094] In embodiments, and as depicted in Fig.2 and Fig.3A-B, the optics 18 may be configured to redirect the light source light in a direction facing away from the first optical pattern. The obtained effect is that the first optical pattern 14 is not readable through the protective cover 13 by the imaging device 17. Thus, a person can only have access with the imaging device 17 to the first optical pattern 14 when the solid-state light source 10 is switched off. When the solid-state light source 10 is switch on (and having a relatively high intensity) the imaging device 17 is overexposed and the first optical pattern 14 is not readable through the protective cover 13 by the imaging device 17.
[0095] In embodiments, the luminaire light comprises the light source light, and the luminaire light may be white light having a correlated color temperature in a range from 2000K to 6500K (or in a range from 2500K to 4500K) and a color rendering index of at least 70 or at least 80. The obtained effect is improved light quality e.g. improved readability of one or more items e.g. a second optical pattern illuminated below the luminaire 100.
[0096] In embodiments, and as depicted e.g. in Fig.lA-B, the lighting system 200 may further comprise the imaging device 17. The imaging device 17 may comprise a camera 25. The image device 17 may comprise or is a mobile phone. The obtained effect is increased flexibility of the lighting system 200. The reason is that many persons may have access to scan the first optical pattern 14.
[0097] In embodiments, and as depicted e.g. in Fig.lA-B and Fig.4, the first optical pattern 14 may comprise or is a Quick Response (QR) code 26. QR codes 26 have several advantages, including one or more of the following: (1.) Quick and easy access: QR codes 26 allow users to quickly access information by simply scanning the QR code 26 with a smartphone or other imaging device. (2.) Versatility: QR codes 26 can be used in a wide range of applications, from marketing and advertising to ticketing, payments, and inventory management. (3.) Cost-effective: Creating and using QR codes 26 is relatively inexpensive compared to other technologies, making it a cost-effective solution for businesses. (4.) Traceability: QR codes 26 can be used to track and monitor products, assets, and other items, providing valuable data for businesses. (5.) Contactless interaction: QR codes 26 enable contactless interaction, which is especially important in situations where physical contact is limited or not recommended, such as during the COVID-19 pandemic. Overall, QR codes 262025PF80082
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[0099] provide a convenient and efficient way to access information and interact with the physical world using digital technology.
[0100] In embodiments, in a second mode of the luminaire 100 the first optical pattern 14 may not be readable (through the protective cover 13) by the imaging device 17. The obtained effect is that access to the first optical pattern 14 may be controlled. In first time intervals the first optical pattern 14 may not be readable, while in second interval the first optical pattern 14 may be readable.
[0101] In embodiments, in the second mode of the luminaire 100 the luminaire 100 may provide luminaire light having a first intensity, II, and (ii) in the first mode of the luminaire the luminaire may provide no luminaire light or luminaire light having a second intensity, 12, wherein I2<0.5-11 e.g. the difference in intensity may be at least 30% or at least 55%. The obtained effect is that access to the first optical pattern 14 may be controlled. In first time intervals the first optical pattern 14 may not be readable, while in second interval the first optical pattern 14 may be readable.
[0102] In alternative embodiments, not depicted, the light source light may comprise a property of a lighting characteristic. Said lighting characteristic may for example be a light spectrum. In a first mode of the luminaire, the luminaire may provide light source light with a first spectral distribution of the light spectrum, for example comprising ultraviolet light, wherein the first optical pattern may be a fluorescent first optical pattern, and thereby be readable in said first mode by an imaging device. In a second mode of the luminaire, the luminaire may not provide said first spectral distribution comprising the ultraviolet light, but e.g. another spectral distribution, wherein the first optical pattern may not be readable by an imaging device.
[0103] In embodiments, and as depicted in Fig.5, the protective cover 13 may comprise an electro-optical element 27. In the second mode of the luminaire 100 the electro-optical element 27 may be non-transparent. In the first mode of the luminaire 100 the electro-optical element 27 may be transparent. The obtained effect is that access to the first optical pattern 14 may be controlled. In first time intervals the first optical pattern 14 may not be readable, while in second interval the first optical pattern 14 may be readable.
[0104] In embodiments, and as depicted in Fig.5, the electro-optical element 27 may comprise one or more of a liquid-crystal based element, an electro-chromic based element, an electro-wetting element, electro-phoretic element. The obtained effect is that access to the first optical pattern 14 may be controlled. In first time intervals the first optical pattern 14 may not be readable, while in second interval the first optical pattern 14 may be readable.2025PF80082
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[0106] In embodiments, and as depicted in Fig.6, the protective cover 13 may be sealed (e.g. gastight) with a seal 28 such that the first optical pattern 14 is arranged in a sealed enclosure 29 comprising a gas 30. The obtained effect is improved protected first optical pattern 14. The reason is that the first optical pattern 14 is protected against ingress of particulate matter e.g. dust, oxygen and / or water. These substances may deteriorate the quality of the first optical pattern 14 e.g. oxidate the first optical pattern 14.
[0107] In embodiments, and as depicted in Fig.6, the gas may comprise a different gas 30 composition than air. The gas 30 may comprise a higher Helium (He) content (e.g. concentration) than air e.g. a difference of at least 1% or at least 5% or at least 10%.
[0108] Preferably the gas 30 may comprise at least 10% He, at least 30% He or at least 50% He. The obtained effect is improved cooling / improved thermal management such that the quality of the first optical pattern e.g. QR code is better maintained because heat can be conducted away from the first optical pattern 14 e.g. the QR code 26.
[0109] In embodiments, and as depicted in Fig.4, the first optical pattern 14 e.g. QR 26 code may be free from a black pattern. In embodiments, part of the light source light may impinge of the first optical pattern 14 e.g. QR code 26. The obtained effect is improved efficiency. The reason is that conventional QR codes 26 have a black pattern. When part of the light source light impinges on the black pattern a (major) part of the light source light may be lost.
[0110] In embodiments, and as depicted in Fig.4, the first optical pattern 14 e.g. QR code 26 may comprise a white background and a colored pattern, wherein the colored pattern is yellow or green or green-yellow. The obtained effect is improved efficiency. The reason is that white light contains much green-yellow light which is reflected by the colored pattern.
[0111] In embodiments, and as depicted in Fig.4, the first optical pattern 14 e.g. QR code 26 may comprises a metal layer or metal pattern. The metal layer or metal pattern may comprise aluminum and / or silver. The obtained effect is improved efficiency e.g. when part of the light source light impinges onto the metal layer / pattem. Such a metal layer / pattern may be susceptible to degradation and needs to be protected.
[0112] In embodiments, and as depicted in Fig.6, the luminaire 100 further comprises a controller 31. The controller 31 may be configured to control the solid-state light source 10 e.g. based on the first system information and / or the first system action. For example, when the first optical pattern 14 e.g. QR code 26 is read by the image device 17 e.g. scanner or a camera, one or more lighting properties of the light source light may be altered / changed. The lighting properties may comprise one or more of a color point (e.g. at least a difference Ax of2025PF80082
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[0114] 0.05 and / or at least a difference Ax of 0.05 in CIE1931 color space), correlated color temperature (e.g. at least a difference of at least 500K), color rendering index (e.g. at least difference of 10 points), light intensity (e.g. at least a difference of at least 20%). The controller 31 may be arranged outside the sealed enclosure 29. Electrical connections 32 e.g. wires 32 may be arranged through said sealed enclosure 29. The electrical connections 32 may electrically connect the controller with the solid-state light source. In embodiments, the solid-state light source may comprises a first LED light source emitting first LED light and a second LED light source emitting second LED light, and optionally a third LED light source emitting third LED light. For example, the first LED light may be white light have a first correlated color temperature, CCT1, and the second LED light may be white light having a second correlated color temperature, CCT2, wherein CCT2-CCT>500K. Or, for example, the first LED light may be red light, the second LED light may be blue light and the third light may be green light. By individually controlling the first, second and, when applicable, the third LED light source, the color point and / or the correlated color temperature of the luminaire light can be controlled.
[0115] The term “plurality” refers to two or more.
[0116] The terms “substantially” or “essentially” herein, and similar terms, will be understood by the person skilled in the art. The terms “substantially” or “essentially” may also include embodiments with “entirely”, “completely”, “all”, etc. Hence, in embodiments the adjective substantially or essentially may also be removed. Where applicable, the term “substantially” or the term “essentially” may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%.
[0117] The term “comprise” also includes embodiments wherein the term “comprises” means “consists of’.
[0118] The term “and / or” especially relates to one or more of the items mentioned before and after “and / or”. For instance, a 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 an embodiment refer to "consisting of' but may in another embodiment also refer to "containing at least the defined species and optionally one or more other species".
[0119] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the2025PF80082
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[0121] invention described herein are capable of operation in other sequences than described or illustrated herein.
[0122] The devices, apparatus, or systems may herein amongst others be described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation, or devices, apparatus, or systems in operation.
[0123] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.
[0124] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
[0125] Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise”, “comprising”, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to”.
[0126] The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
[0127] The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a device claim, or an apparatus claim, or a system claim, enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. In yet a further aspect, the invention (thus) provides a software product, which, when running on a computer is capable of bringing about (one or more embodiments of) the method as described herein.
[0128] The invention also provides a control system that may control the device, apparatus, or system, or that may execute the herein described method or process. Yet further, the invention also provides a computer program product, when running on a computer which is functionally coupled to or comprised by the device, apparatus, or system, controls one or more controllable elements of such device, apparatus, or system.
[0129] The invention further applies to a device, apparatus, or system comprising one or more of the characterizing features described in the description and / or shown in the attached drawings. The invention further pertains to a method or process comprising one or2025PF80082
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[0131] more of the characterizing features described in the description and / or shown in the attached drawings.
[0132] The various aspects discussed in this patent can be combined in order to provide additional advantages. Further, the person skilled in the art will understand that embodiments can be combined, and that also more than two embodiments can be combined. Furthermore, some of the features can form the basis for one or more divisional applications.
Claims
2025PF8008220CLAIMS:
1. A lighting system (200) comprising a luminaire (100) configured to provide, in operation, luminaire light, the luminaire comprises:a solid-state light source (10) configured to emit, in operation, light source light,a housing (11) housing the solid-state light source,a first structure surface (12),a first optical pattern (14) configured to provide access to first system information (15) and / or to trigger a first system action (16);wherein the first optical pattern is arranged on the first structure surface; wherein in a first mode of the luminaire the first optical pattern is readable by an imaging device (17); andwherein in a second mode of the luminaire the first optical pattern is not readable by the imaging device.
2. The lighting system according to claim 1, wherein the system information comprises one or more of: product information, historic information, maintenance information, location information, and access information;wherein the first system action comprises at least one of: a diagnostics check of the lighting system and / or the luminaire, a reset of the lighting system and / or the luminaire, a reconfiguration of the lighting system and / or the luminaire, a shutdown of the lighting system and / or the luminaire, identifying or assigning a status to the lighting system and / or the luminaire, a commissioning step of the lighting system and / or the luminaire, a registration step.
3. The lighting system according to claim 2, wherein the luminaire comprises a protective cover (13);wherein the first optical pattern is arranged between the protective cover and the first structure surface;2025PF8008221wherein the protective cover is transparent such that in the first mode of the luminaire the first optical pattern is readable through the protective cover by an imaging device; and wherein in a second mode of the luminaire the first optical pattern is not readable through the protective cover by the imaging device;wherein the protective cover covers the first optical pattern and is configured to protect the first optical pattern against ingress of dust, oxygen and / or water, UV radiation and / or IR radiation.
4. The lighting system according to claim 1, wherein the protective cover comprises optics (18) configured to redirect the light source light emitted by the solid-state light source.
5. The lighting system according to claim 2, wherein the optics comprises a light guide (19).
6. The lighting system according to claim 3, wherein the light guide comprises a first major surface (20) and a second major surface (21) opposite to the first major surface, the first major surface is facing away from the first optical pattern and the second major surface is facing the first optical pattern; wherein the light guide further comprises one or more side faces (22) bridging a distance between the first major surface and the second major surface; wherein the light guide comprises light outcoupling elements (23); wherein the light outcoupling elements are arranged in the light guide, and / or on the first major surface, and / or on the second major surface; wherein the light outcoupling elements are configured to facilitate light outcoupling from the light guide; wherein the solid-state light source and the light guide are configured such that in a first operational mode of the luminaire (a) at least part of the light source light enters the light guide via at least one of the one or more side faces to provide incoupled light source light, wherein the light guide is configured to guide the incoupled light source light via total internal reflection, and (b) at least part of the incoupled light source light is coupled out from the light guide via the first major surface.
7. The lighting system according to any one of the claims 4 to 6, wherein the optics is configured to redirect the light source light in a direction facing away from the first optical pattern.2025PF80082228. The lighting system according to any one of the preceding claims, wherein the luminaire light comprises the light source light; and wherein the luminaire light is white light having a correlated color temperature in a range from 2000K to 6500K and a color rendering index of at least 80.
9. The lighting system according to any one of the preceding claims, wherein:the lighting system further comprises the imaging device, the imaging device (17) comprises a camera (25);the first optical pattern comprises a QR code (26).
10. The lighting system according to any one of the preceding claims, wherein (i) in the second mode of the luminaire the luminaire provides luminaire light having a first intensity, II, and (ii) in the first mode of the luminaire the luminaire provides no luminaire light or luminaire light having a second intensity, 12, wherein I2<0.5-11.
11. The lighting system according to any one of the preceding claims, wherein the protective cover comprises an electro-optical element (27), wherein in the second mode of the luminaire the electro-optical element is non-transparent.
12. The lighting system according to claim 11, wherein the electro-optical element comprises one or more of a liquid-crystal based element, an electro-chromic based element, an electro-wetting element, electro-phoretic element.
13. The lighting system according to any one of the preceding claims, wherein the protective cover is sealed with a seal (28) such that the first optical pattern is arranged in a sealed enclosure (29) comprising a gas (30).
14. The lighting system according to claim 13, wherein the gas comprises a different gas composition than air, preferably the gas comprises at least 10% He.2025PF800822315. The lighting system according to anyone of the preceding claims, wherein the luminaire further comprises a controller (31) configured to control the solid-state light source based on the first system information and / or the first system action.