Light generating system comprising a sunroof module

Abstract

The present invention provides a light generation system (1000), comprising: an illumination module (1500), wherein the illumination module (1500) includes a skylight module; wherein the illumination module (1500) includes one or more light generation devices (100), a first light escaping region (1510), a second light escaping region (1520), and a light escaping region (1530); wherein: the one or more light generation devices (100) are configured to generate device light (101); the first light escaping region (1510) and the second light escaping region (1520) are configured at an angle (α) selected from the range of 30°-150°; wherein a first distance (d1) between the first light escaping region (1510) and the third light escaping region (1530) is at least partially bridged by the second light escaping region (1520); wherein the light generation system (1000) includes a system end window (1010), wherein the system end window (1010) includes The light generation system (1000) is configured such that, in a first operating mode, the light generation system (1000) provides a first module light (1511) and a second module light (1512), wherein the first module light (1511) comprises a first portion of the device light (101) that propagates from the first light emanating region (1510) and passes through the third light emanating region (1530), and wherein the second module light (1521) comprises a second portion of the device light (101) that propagates from the second light emanating region (1520) and passes through the third light emanating region (1530); wherein the first module light (1511) is white light, and wherein the first module light (1511) and the second module light (1521) differ in one or more of the following aspects: (i) the color point and uniformity of the light (1511, 1522) on the respective light emanating regions (1510, 1520).

Description

Technical Field

[0001] This invention relates to a light generation system. It also relates to an indoor space including the light generation system. Background Technology

[0002] Light generation systems are known in the art. For example, US 2020370719A1 describes a lighting fixture that appears as a skylight and is called a skylight luminaire. The skylight luminaire has a sky-like component and a plurality of sun-like components. The sky-like component has a sky-like optical component and a sky-specific light source, wherein light from the sky-specific light source exits as skylight light from the flat inner surface of the sky-like optical component. The plurality of sun-like components are arranged adjacent to each other and extend downward from the periphery of the sky-like component. Each of the plurality of sun-like components has a sun-like optical component and a sun-specific light source, wherein light from the sun-specific light source exits as sunlight from the flat inner surface of the sun-like optical component.

[0003] US20220026052A1 and WO2019156950A1 both disclose a ceiling skylight fixture that provides a skylight through a horizontally extending surface and provides sunlight through a vertically extending surface.

[0004] US20180017233A1 discloses a lighting device capable of emitting light that mimics the sky in nature. Summary of the Invention

[0005] Artificial skylights can artificially recreate the visual experience of having a sky and sun in an indoor environment. Specifically, an artificial skylight can provide the experience of having a skylight through which one can see the sky, sun, and clouds. Typically, the light source simulating the sky is set to be recessed relative to the front surface of the device, that is, recessed relative to the light-emitting window, and the inner sidewalls of the recess provide a surface that simulates sunlight. The first challenge associated with artificial skylights of existing technology is to provide a satisfactory view of the sun and sky for every observer, regardless of the viewing direction. However, not all sidewalls can be simultaneously illuminated by the sun without compromising on the visual effects of the sun's direction and shadows. Therefore, the user experience may be degraded for users who only observe the shadowed portion of the skylight. Secondly, at a certain distance from the artificial light, the user can no longer see the sky. The inner sidewalls that are only illuminated by the sun remain, which can significantly reduce the experience of the light scene. Moreover, although larger skylights can provide a certain sense of surfacing, professional spaces are often constrained by standard-sized grille ceilings. Furthermore, multiple smaller skylights convey a stronger visual effect than a single large skylight. Furthermore, while physical skylights can provide views of nearby natural and / or man-made structures (e.g., trees, mountains, bridges, or churches), existing artificial skylights are typically limited to the sky and the sun, which can adversely affect the visual experience; that is, existing artificial skylights may lack a scenic experience. A further challenge with existing technologies involves the so-called blue flooding phenomenon, which originates from the blue light emitted by architectural elements in the sky and can make the (work) space excessively blue. Although vertically arranged sun-simulating sidewalls can theoretically help reduce this result, efficient (wall-to-wall, rather than wall-to-table) and adequate compensation (too small an area) can typically be suppressed by high glare (bright sun). Moreover, for square or rectangular skylights, it would be preferable to use four sun-lit inner sidewalls to evenly balance the result. However, again, when all four sidewalls are sun-lit, the visual effect does not feel natural due to the lack of visual effects regarding the sun's direction and shadows. Furthermore, for a more natural look / feel of the artificial skylight, it is preferable that the cavity of the artificial skylight does not have a (collimated) grid structure or louver structure. Moreover, the absence of such structures makes the artificial skylight more efficient because these structures typically block and / or absorb light emitted by the light source of the artificial skylight.

[0006] Therefore, one aspect of the present invention is to provide an alternative light generation system that preferably further eliminates at least partially one or more of the aforementioned disadvantages. The object of the present invention is to overcome or improve upon at least one disadvantage of the prior art, or to provide a useful alternative. The invention is set forth in the appended claims.

[0007] According to a first aspect, the present invention provides a light generation system including an illumination module, wherein the illumination module includes a skylight module. The illumination module may include one or more light generation devices, a first light escaping region, a second light escaping region, and / or a third light escaping region. In an embodiment, the one or more light generation devices may be configured to generate device light. In another embodiment, the first light escaping region and the second light escaping region may be configured at an angle α selected from 30° to 150°. Furthermore, in an embodiment, a first distance d1 between the first light escaping region and the third light escaping region may be at least partially bridged by the second light escaping region. The light generation system may also include a system-end window, particularly wherein the system-end window includes the third light escaping region. In an embodiment, the light generation system may be configured such that in a first operating mode, the light generation system provides first module light and second module light. In particular, the first module light may include a first portion of device light propagating from the first light escaping region and passing through the third light escaping region, particularly wherein the first module light is white light. Similarly, in an embodiment, the second module light may include a second portion of the device light propagating from the second light escaping region and passing through the third light escaping region. In another embodiment, the first module light and the second module light may differ in one or more aspects of (i) color point and (ii) uniformity of light on their respective light escaping regions. In a particular embodiment, the present invention may provide a light generation system including an illumination module, wherein the illumination module includes a skylight module; wherein the illumination module includes one or more light generation devices, a first light escaping region, a second light escaping region, and a third light escaping region; wherein: the one or more light generation devices are configured to generate device light; the first light escaping region and the second light escaping region are configured at an angle (α) selected in the range of 30°-150°; wherein a first distance (d1) between the first light escaping region and the third light escaping region is at least partially bridged by the second light escaping region; wherein the light generation system includes a system end window, wherein the system end window includes the third light escaping region; the light generation system is configured such that when coupled When connected to a ceiling or recessed ceiling, in a first operating mode (of the light generating system), the light generating system provides a first module light representing sunlight in the vertical direction and a second module light representing a skylight in the horizontal direction, wherein the first module light includes a first portion of the device light that propagates from the first light escaping area and passes through the third light escaping area, and wherein the second module light includes a second portion of the device light that propagates from the second light escaping area and passes through the second light escaping area and passes through the third light escaping area; wherein the first module light is white light, and wherein the first module light and the second module light differ in one or more of the following aspects: (i) color point and (ii) uniformity of light in the respective light escaping areas.

[0008] This embodiment offers the following advantages: the artificial sun is presented on a (substantially) horizontal surface, and the artificial sky is presented on a side surface, thus providing a similar experience for different viewing directions; that is, a more uniform lighting experience is provided when the artificial sun is centrally positioned. In particular, the artificial skylight of the present invention can provide the same lighting scene experience of the sky and sun independent of the viewing direction. Moreover, the lighting device can integrate the functional light source (sunlight source for the roof building) with the symmetrical arrangement of the skylight light source (or "window") into a single package. Furthermore, particularly in the embodiment with symmetrical windows, blue flooding is significantly and uniformly reduced. In addition, the window simulating the sky can still be observed at a certain distance, which can significantly improve the visual effect of the artificial skylight. Furthermore, sunrise and sunset can also be enabled, and can be observed through the window and closer to the horizon, rather than simply providing the user with a view of the space (e.g., the blue sky).

[0009] Therefore, the present invention provides: a horizontally arranged simulated sunlight light source, disposed in a recess and configured to provide a first module of light through a first light escape zone; a vertically arranged skylight light source, disposed downstream of the sunlight light source and configured to provide a second module of light through a second light escape zone, which forms part of the inner sidewall of the recess; and a transparent panel or open space, also referred to as a window, disposed downstream of the skylight light source that forms the inner surface of the cavity. Typically, sunlight light sources emit warmer CCT (1800-6000K) light, while the simulated skylight light source provides cooler CCT (6500-20000K) light or blue light. Optionally, the invention may further provide a series of roof support elements (or “sun” support elements), such as beams, connecting the base of the device to the simulated sunlight elements (such as window frames), thereby enhancing the visual effect by indicating structural integrity. Furthermore, the present invention may optionally provide opaque roof support elements (e.g., first and / or second beams) that improve and provide the visual effects of direct sunlight and sun shadows, for example by backlighting or by paint or coating with different shades of white.

[0010] As described above, in embodiments, the present invention provides a light generation system including an illumination module. In embodiments, the illumination module can provide light that simulates natural light observed on a sunny day. This may particularly include a combination of blue light produced by the scattering of sunlight in the atmosphere and white light that can simulate direct sunlight. Alternatively, in embodiments, the illumination module can provide a combination of two white lights with different color temperatures. Thus, in embodiments, the illumination module can provide light that simulates such a natural skylight. Further, in certain embodiments, the illumination module can provide light that simulates natural light observed on a cloudy day, or during sunset or sunrise.

[0011] Here, the lighting module may specifically include skylight modules, i.e., lighting modules functionally coupled to (suspended) ceilings. However, other applications functionally coupled to walls, such as artificial windows, are also covered herein. For example, an artificial skylight can be (precisely) installed in a corner of a space, thereby multiplying the window space as a vertical window; therefore, the term "lighting module" in embodiments may refer to an artificial skylight (and in other specific embodiments may refer to another type of lighting module). In particular, the term "skylight module" (which may also be indicated as "artificial skylight") in embodiments may be a window-shaped artificial light generating device. For example, such an artificial skylight may form part of the ceiling (or roof) or may be functionally coupled (e.g., physically connected) to the ceiling (or roof) to simulate sunlight. In this document, the term "ceiling" may also refer to a suspended ceiling.

[0012] In an embodiment, the lighting module may include a first light escaping area, a second light escaping area, and a third light escaping area.

[0013] In other embodiments, the first and second light emanating areas may be arranged recessed relative to the (suspended) ceiling, while the third light emanating area may be arranged, in particular, coplanar with the ceiling. The first and third light emanating areas may be arranged opposite each other, specifically, wherein a first distance d1 between the first and third light emanating areas is at least partially bridged by the second light emanating area. In another embodiment, the first and second light emanating areas may be configured at an included angle α selected from the range of 30° to 150°, i.e., the first light emanating area may define a first plane and the second light emanating area may define a second plane, wherein the first and second planes are arranged at an angle α selected from the range of 30° to 150°. Specifically, in embodiments, the second light emanating area may include a plurality of second area portions, wherein each second area portion defines a second plane having an independently selected angle α with respect to the first plane, selected from the range of 30° to 150°. Specifically, the included angle α can be selected from the range of 50-130º, such as the range of 70-110º. In an embodiment, the included angle α can be (approximately) 90º, that is, the first light escaping region and the second light escaping region can be arranged at (approximately) a right angle. However, in another embodiment, |α-90º|≥5º, for example ≥10º, especially ≥20º, that is, the first light escaping region and the second light escaping region can be arranged at an oblique angle, especially an acute angle or especially an obtuse angle.

[0014] Similarly, in embodiments, the third and second light emanating regions can be configured at an angle α2 selected from 30° to 150°, i.e., the third light emanating region can define a third plane and the second light emanating region can define a second plane, wherein the third and second planes are arranged at an angle α2 selected from 30° to 150°. Specifically, in embodiments, the second light emanating region can include multiple second region portions, each second region portion defining a second plane having an independently selected angle α2 with the third plane, selected from 30° to 150°. Specifically, the angle α2 can be selected from the range of 50-130°, such as the range of 70-110°. In embodiments, the angle α2 can be (approximately) 90°, i.e., the third and second light emanating regions can be arranged at approximately a right angle. However, in another embodiment, |α-90º|≥5º, for example ≥10º, especially ≥20º, that is, the third light escaping region and the second light escaping region can be arranged at an angle (especially an acute angle, or especially an obtuse angle).

[0015] In another embodiment, 160º ≤ α + α2 ≤ 200º, for example 170º ≤ α + α2 ≤ 190º, for example 175º ≤ α + α2 ≤ 185º. In particular, in an embodiment, α and α2 may together be approximately 180º.

[0016] Angles α and α2 may correspond in particular to the angles facing the space defined by the first, second, and third light escape zones (see below).

[0017] As described above, the second optical emanating region can bridge the first optical emanating region and the third optical emanating region at a first distance d1. Specifically, the first and third optical emanating regions can be separated by an (average) distance d2, where 0.3 ≤ d1 / d2 ≤ 1, such as 0.4 ≤ d1 / d2 ≤ 0.9, and especially 0.5 ≤ d1 / d2 ≤ 0.8. In another embodiment, d1 / d2 ≥ 0.5, such as ≥ 0.6, and especially ≥ 0.7, such as ≥ 0.8. In another embodiment, d1 / d2 ≤ 1, such as ≤ 0.95, and especially ≤ 0.9.

[0018] Specifically, the first and third optical emanating regions may together define opposite surfaces of the cavity. A second optical emanating region may be arranged to further define the cavity. Specifically, the second optical emanating region may at least partially overlap with the convex shell of the cavity defined by the first and third optical emanating regions. In a particular embodiment, the second optical emanating region may comprise at least 60%, for example at least 80%, particularly at least 90%, including 100%, of the convex shell of the cavity defined by the first and third optical emanating regions.

[0019] In embodiments, the first and third light emanating regions may have similar areas and shapes. For example, in an embodiment, the first light emanating region may have an (average) area a1 in a first plane parallel to the ceiling, and the third light emanating region may have an (average) area a3 in a third plane parallel to the ceiling, wherein (|a1-a3|) / (0.5*(a1+a3)) ≤ 0.2, such as ≤ 0.1, especially ≤ 0.05, including (substantially) 0. Similarly, in an embodiment, the first light emanating area may have an (average) aspect ratio AR1 in a first plane parallel to the ceiling, and the third light emanating area may have an (average) aspect ratio AR3 in a third plane parallel to the ceiling, wherein (|AR1-AR3|) / (0.5*(AR1+AR3)) ≤ 0.2, such as ≤ 0.1, especially ≤ 0.05, including (substantially) 0.

[0020] However, those skilled in the art will understand that the first and third light emanating regions may also differ in area and / or shape. For example, in an embodiment, the first light emanating region may have a rhomboid shape, with its corners arranged on four second beams of different heights, while the third light emanating region may have a rectangular shape, particularly a square shape.

[0021] In one embodiment, the light generation system may include a system-end window, wherein the system-end window includes a third light escaping area. In another embodiment, the system-end window may be (substantially) an open space, i.e., a window defined (or "defined therein") by a (suspended) ceiling. In a further embodiment, the system-end window may include a solid material, such as glass. The system-end window may, in particular, be transparent (for device light). To some extent, in another embodiment, the third light escaping area may be transparent (for device light).

[0022] In this context, the term "transparent" refers to the property that almost all light encountering a material passes directly through it; that is, the vast majority of light is not reflected or scattered by the material. For example, air and glass are typically transparent.

[0023] In another embodiment, the lighting module may include a housing (or “shell”). The term “housing” may specifically refer to a shell defining an internal space, wherein the internal space is at least partially surrounded by the housing, for example, enclosed but used as a (open) window. The housing may particularly include one or more light generating devices, a first light escaping area, a second light escaping area, and a third light escaping area. Specifically, one or more light generating devices, the first light escaping area, and the second light escaping area may be arranged within the housing. In another embodiment, the housing may include a housing window, wherein the housing window includes a third light escaping area. Specifically, the housing window may include a system-end window.

[0024] In embodiments, the housing may have a dome-like or cylindrical shape. In other embodiments, the housing may have a prism shape, particularly a rectangular prism shape. The housing may particularly include light-reflecting walls, such as diffuse walls. Specifically, the light-reflecting walls may (at least partially) define the shape of the housing. The inner surface of the housing may include (static) images at its surface. Further, in embodiments, the area between the second light escaping zone and the enclosure may include objects (or "obstacles"), particularly (translucent) images of landscape architectural subjects, such as trees or churches. In such embodiments, the housing, or particularly the inner surface of the housing, may be configured to be rotatable, thereby allowing the visual effect of moving subjects (such as clouds).

[0025] In another embodiment, the housing window is an opening within the housing. In such embodiments, the third light escaping region may substantially comprise air.

[0026] In another embodiment, the lighting module may include one or more light generating devices. Specifically, the one or more light generating devices may be configured to generate device light. Specifically, a first portion of the device light may propagate from a first light escaping region and through a third light escaping region, while a second portion of the device light may propagate from a second light escaping region and through the third light escaping region. Therefore, the light generating devices may be configured to provide device light such that the first portion of the device light follows a path leaving the first light escaping region and passing through the third light escaping region, while the second portion of the device light follows a path leaving the second light escaping region and passing through the third light escaping region.

[0027] A light generation system, and particularly a control system included in a light generation system, may have operating modes. The term "operating mode" may also refer to "control mode." The light generation system can perform actions in a "mode," "operating mode," or "mode of operation." Similarly, in a method, actions, stages, or steps can be performed in a "mode," "operating mode," or "mode of operation." This does not preclude the light generation system from being adapted to provide another operating mode or multiple other operating modes. Likewise, this does not preclude the possibility of executing one or more other modes before and / or after executing a mode. However, in embodiments, a control system (further details below) may be available, adapted to provide at least an operating mode. When other modes are available, the selection of such modes may be performed, in particular, via a user interface, but other options (e.g., performing modes based on sensor signals or (time) schemes) are also possible. In embodiments, an operating mode may also refer to a light generation system that can operate only in a single operating mode (i.e., "on," without further adjustability). The term "control" and similar terms particularly refer at least to determining the behavior of an element or supervising the operation of an element. Therefore, the term "control" and similar terms used herein may refer, for example, to applying actions to a component (determining actions or monitoring the operation of the component), such as measuring, displaying, actuating, turning on, switching, changing temperature, etc. In addition, the term "control" and similar terms may further include monitoring. Thus, the term "control" and similar terms can include applying actions to a component and applying actions to a component while monitoring that component. Control of a component can be accomplished using a control system, which can also be referred to as a "controller." Therefore, the control system and the component can be functionally coupled, at least temporarily or permanently. The component may include the control system. In embodiments, the control system and the component may not be physically coupled. Control can be accomplished via wired and / or wireless control. The term "control system" may also refer to multiple different control systems that are functionally coupled, and for example, one of the control systems may be a master control system, while one or more other control systems may be slave control systems. The control system may include or may be functionally coupled to a user interface. For example, in embodiments, a light generation system may include a control system, particularly wherein the control system is configured to (individually) control one or more light generation devices. For example, the control system can be configured to control one or more light generating devices based on input signals from a user interface, sensor signals from sensors, and one or more timers. Therefore, in embodiments, the control system can control a light generating system, particularly one or more light generating devices, based on input signals from a user interface, sensor signals from sensors, and one or more timers. The term "timer" can refer to a clock and / or a predetermined timing scheme.

[0028] In another embodiment, the control system can control the light generating system, particularly one or more light generating devices, based on (local) weather conditions. Specifically, the control system can control the light generating system to mimic local weather conditions, which can further enhance the visual effect of having a natural skylight. For example, in a room with both artificial skylights and windows, the (substantial) difference between the artificial view through the skylight and the actual weather as seen through the window can detract from the visual effect.

[0029] In another embodiment, the light generating system may further include a sensor configured to sense characteristics of the space and provide relevant sensor signals to the control system. In such an embodiment, the control system may be configured to control the light generating device based on the sensor signals, particularly (individually) controlling one or more light generating devices. In a further embodiment, the sensor may be configured to sense the presence and / or movement of a person in the space, particularly presence or particularly movement, and provide relevant sensor signals to the control system. The term "relevant sensor signal" herein may refer to a signal associated with the sensed characteristic. Specifically, the relevant sensor signal may include raw and / or processed data associated with the sensed characteristic, such as the presence and / or movement of a person.

[0030] The light generation system may, in particular, have a first operating mode in which the light generation system provides a first module light and a second module light. Specifically, the first module light may include a first portion of the device light (see above), and the second module light may include a second portion of the device light (see above). The first module light and the second module light may, in particular, differ in one or more aspects of (i) color point and (ii) uniformity of light at their respective light emission regions (i.e., at the first and second light emission regions respectively), especially at least in color point or especially at least in uniformity.

[0031] Specifically, the first module light may correspond to light from the first light escaping region, and in embodiments may represent sunlight. The first module light may therefore include, in particular, white light.

[0032] The term "white light" and similar terms used herein are known to those skilled in the art. It can particularly refer to light having a correlated color temperature (CCT) between about 1800K and 20000K (e.g., between 2000K and 20000K, especially 2700-20000K) for general illumination (especially in the range of about 2000-7000K (e.g., between 2700K and 6500K)). In embodiments, the correlated color temperature (CCT) can particularly be in the range of about 7000K to 20000K. Furthermore, in embodiments, the correlated color temperature (CCT) is particularly within about 15 SDCMs (standard deviation of color matching) of the blackbody track (BBL), particularly within about 10 SDCMs of the BBL, and even more particularly within about 5 SDCMs of the BBL.

[0033] In embodiments, the lighting module may include a first light generating device defining a first light emanating region. For example, the first light emanating region may include a light-emitting surface or a light-transmitting window of the first light generating device. In particular, in such embodiments, the first light generating device may be configured to provide device light, especially white device light, to a third light emanating region.

[0034] Specifically, in an embodiment, one or more light generating devices may include a first light generating device configured to generate white first device light, wherein the light generating system is configured such that in a first operating mode (of the light generating system), at least a portion of the first white device light escapes from a first light escaping region, such as from a light emitting surface including the first light escaping region.

[0035] In another embodiment, the first light generating device may include a light-transmitting window comprising a light-transmitting material, wherein the light-transmitting window includes a first light escaping region. In such embodiments, the first light generating device may be configured to generate white first device light away from the first light escaping region and to provide the white first device light to, and particularly through, the light-transmitting window. Therefore, the light-transmitting window may transmit (at least a portion) of the white first device light. In particular, the light-transmitting window may be translucent to the white first device light.

[0036] Light-transmitting materials are known to those skilled in the art as materials that allow light to pass through them. Light-transmitting materials can be transparent, wherein, in embodiments, the transmittance of light passing through the light-transmitting material in a direction perpendicular to its surface can be at least 50%, such as at least about 75%, as in embodiments at least 90%, or even more particularly at least about 100%.

[0037] The light-transmitting material may include one or more materials selected from the group consisting of: light-transmitting organic materials, such as those selected from the group consisting of: PE (polyethylene), PP (polypropylene), PEN (polyethylene naphthalate), PC (polycarbonate), polyurethane (PU), polymethyl acrylate (PMA), polymethyl methacrylate (PMMA) (Plexiglas or Perspex), polymethacrylamide (PMI), polymethyl methacrylate (PMMI), styrene-acrylonitrile resin (SAN), cellulose acetate butyrate (CAB), silicone, polyvinyl chloride (PVC), polyethylene terephthalate (PET), in one embodiment including (PETG) (diol-modified polyethylene terephthalate), PDMS (polydimethylsiloxane), and COC (cyclic olefin copolymer). In particular, the light-transmitting material may comprise an aromatic polyester or a copolymer thereof, such as one or more of polycarbonate (PC), poly(meth)acrylate (P(M)MA), polyglycolic acid or polyglycolic acid (PGA), polylactic acid (PLA), polycaprolactone (PCL), polyethylene adipate (PEA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate (PTT), and polyethylene naphthalate (PEN). In particular, the light-transmitting material may include polyethylene terephthalate (PET). Therefore, the light-transmitting material is particularly a polymeric light-transmitting material. However, in another embodiment, the light-transmitting material may include an inorganic material. Specifically, the inorganic light-transmitting material may be selected from the group consisting of glass, (fused) quartz, transmissive ceramic materials, and silicone. Hybrid materials containing both inorganic and organic components can also be used. In particular, light-transmitting materials include one or more of PMMA, PC, or glass.

[0038] In this embodiment, the light transmission window may be semi-transparent. Specifically, the light transmission window may be diffuse / scattering. This diffuse / scattering light transmission window prevents an observer from seeing the interior of the housing through the light exit window while allowing light to escape from the housing. Therefore, particularly in this embodiment, the light transmission window is not completely transparent, as it appears useful when at least a portion of the light escaping from the system is scattered within it.

[0039] A relatively uniform distribution of white first device light in the first light emission zone can enhance the visual effect of sunlight. In particular, it may not be desirable to see the outline of the illumination device when looking towards the first light emission zone. Therefore, translucent (rather than transparent) light transmission windows or diffuse reflection elements (see below) are particularly suitable for transmitting or reflecting white first device light.

[0040] Therefore, in another embodiment, the illumination module may include a first light generating device configured to provide device light to a first light escaping region. In such embodiments, the first light generating device may be arranged particularly away from the first light escaping region. Specifically, in embodiments, the illumination module may include a white diffuser element that is reflective or translucent to white light, wherein the white diffuser element is configured to reflect or transmit at least a portion of the white light of the device light. In another embodiment, the white diffuser element may include the first light escaping region. For example, the white diffuser element may include a white diffuser layer or a white diffuser window.

[0041] The phrase “reflective of white light” and similar phrases in this text may refer to a surface that reflects at least 70% of white light (when illuminated vertically with white light), such as at least 80%, especially at least 90%, such as at least 95%, including 100% of white light.

[0042] The phrase "translucent to white light" and similar phrases herein can refer to a material that transmits at least 70% of white light (when illuminated perpendicularly with white light) to its surface, such as a material that transmits at least 80% (though higher values, such as at least 90%, or at least 95%) of white light, while at least a portion of the transmitted light may also be scattered. Therefore, a translucent window can transmit and diffuse light. In embodiments, the translucent window may be emulsifiable. For example, a first light escaping region may be the surface of the translucent window. Alternatively or additionally, a second light escaping region may be the surface of the translucent window.

[0043] The phrase "transparent to white light" and similar phrases herein can refer to a material that transmits at least 70% of white light (when illuminated perpendicularly with white light) to its surface, such as a material that transmits at least 80%, at least 90%, or at least 95% without substantial scattering. The transparent window can be, in particular, transparent. For example, in an embodiment, the third light escaping region can be the surface of a transparent end window (or there may be no end window at all, and only an opening).

[0044] White diffusers can particularly include amorphous diffusers. Amorphous diffusers may be particularly suitable because they can suppress (undesirable) reflections at the surface of a sunlight source from skylight light mimicking the light source and transparent windows. That is, it may be preferred to have as little remaining of such an element as possible visible at the surface of the sunlight source, which can be facilitated by amorphous diffusers. The term "amorphous diffuser" here may refer to a diffuser that has almost no specular reflection at its surface interface on the observer side. The amorphous diffuser may be substantially free of crystals.

[0045] In another embodiment, the illumination module may include a white diffuser element, wherein the white diffuser element is reflective of white light, and wherein the white diffuser element is configured to reflect at least a portion of the white light of the device light. Specifically, in such embodiments, the white diffuser element and at least a portion of the one or more light generating devices may be arranged such that the one or more light generating devices provide device light to the white diffuser element, wherein the device light illuminating the white diffuser element is reflected toward the third light escaping region.

[0046] Similarly, in embodiments, the illumination module may include a white diffuser element, wherein the white diffuser element is translucent to white light, and wherein the white diffuser element is configured to transmit at least a portion of the white light of the device light. Specifically, in such embodiments, the white diffuser element and at least a portion of the one or more light generating devices may be arranged such that the one or more light generating devices provide device light to the white diffuser element, wherein the device light illuminating the white diffuser element is transmitted and travels toward the third light escaping region.

[0047] As described above, in the embodiments, the color points of the first module light and the second module light can be different. Specifically, the second module light may correspond to light emanating from the second light escape region, and in the embodiments may represent light scattered in the sky. For example, the second module light may include blue light representing the sky during a clear day, but may also include a mixture of blue and white light to represent more cloudy or foggy days. Further, in the embodiments, the second module light may include, for example, a gradient of orange and / or violet light to represent sunrise or sunset. Those skilled in the art will appreciate that many variations can be made to create a representation of changes in the natural sky.

[0048] For example, in an embodiment, the device light may include blue light. The term "blue light" or "blue emission" specifically refers to light having wavelengths in the range of about 440-495 nm (including some violet and cyan hues). In an embodiment, one or more light generating devices (at least a portion thereof) may be configured to provide blue light.

[0049] In one embodiment, the illumination module may include a second light generating device that defines a second light escaping region. Specifically, the light generating system may be configured such that, in a first operating mode (of the light generating system), at least a portion of the light from the second device escapes from the second light escaping region.

[0050] For example, the second light emanating region may include the light-emitting surface of the second light generating device. In particular, in such embodiments, the second light generating device may be configured to provide device light, especially blue device light, to the third light emanating region.

[0051] In another embodiment, the illumination module may include a second light generating device configured to provide device light to the second light emanating region. In such embodiments, the second light generating device may be arranged particularly away from the second light emanating region. In such embodiments, the illumination module may particularly include a second transparent element, wherein the second transparent element includes the second light emanating region, and wherein the second transparent element is transparent at least to blue device light. In embodiments, the second transparent element may include a graded filter, particularly a graded filter for blue light. Thus, the natural variations in the blue of the sky can be reproduced, which can further enhance the visual effect. For example, in a particular embodiment, the graded filter may provide a gradient in the direction from the first light emanating region toward the third light emanating region, particularly wherein the graded filter is configured such that the brightness of the blue light passing through the second transparent element increases in the direction from the first light emanating region to the second light emanating region.

[0052] Specifically, the second transparent element can facilitate the provision of, for example, a view of the sky (see below). Specifically, in such embodiments, the second transparent element and at least a portion of one or more light generating devices can be arranged such that one or more light generating devices provide device light to the second transparent element, wherein the device light illuminating the second transparent element is transmitted and travels toward a third light escaping region.

[0053] This is particularly convenient and efficient when the first module light and the second module light are provided by the same light generating device. Therefore, in an embodiment, the illumination module includes a light transmission window comprising a Rayleigh scatterer, wherein the light transmission window defines a second light escape region. The Rayleigh scatterer can be configured to (selectively) scatter blue light.

[0054] In embodiments having a light transmission window including a Rayleigh scatterer, one or more light generating devices may be configured, in particular, to provide (white) device light to a first light escaping region via a second light escaping region (i.e., via the Rayleigh scatterer). Specifically, in such embodiments, the lighting module may particularly include a white diffuser element (see above), wherein the white diffuser element is reflective of at least a portion of the white device light, and particularly wherein the white diffuser element includes a first light escaping region and is configured to reflect the white device light received from one or more light generating devices toward a third light escaping region. This embodiment provides a particularly natural experience because the natural blue sky is also caused by Rayleigh scattering of natural white sunlight. Because a portion of the blue light is scattered by the Rayleigh scatterer in such embodiments, the device light reaching the first light escaping region will lose intensity in the blue wavelength range relative to device light generated by one or more light generating devices. Therefore, the light generating devices may be configured to provide device light with a higher proportion of blue light to address scattering, and such that the device light reaching the first light escaping region (especially reaching the white diffuser element) is white light. In a particular embodiment, the lighting device may have a (dedicated) blue light generating device configured to provide blue light from the device to a Rayleigh scatterer and optionally provide the blue light from the device to a first light escaping region via the Rayleigh scatterer.

[0055] Therefore, in embodiments, the first module light (evolving from the first light emission region) may include white light, and the second module light (evolving from the second light emission region) may include blue light. Particularly in these embodiments, the first module light may include white light having a first correlated color temperature (CCT1) of up to 10000K (such as up to 8000K, especially up to 6000K), and the first correlated color temperature (CCT1) may be at least 2500K (such as at least 4000K, especially at least 6000K).

[0056] In another embodiment, both the first module light and the second module light can comprise white light. In such an embodiment, the second module light can be white light with a second correlated color temperature (CCT2) of up to 10000K (such as up to 8000K, especially up to 6000K), particularly where the first module light is white light with a first correlated color temperature (CCT1) of at least 1800K (such as at least 2500K, especially at least 3500K). In another embodiment, the first correlated color temperature (CCT1) can be up to 7000K, such as up to 5000K, especially up to 3000K. In particular, in these embodiments where both the first module light and the second module light are white light, then CCT2-CCT1 ≥ 300K, such as ≥ 500K, especially ≥ 750K. Such embodiments can provide different appearances to the first module light and the second module light, even when both are white light. For example, this embodiment can facilitate providing the visual effect of a gray sky on a rainy day.

[0057] In addition to natural variations in weather type (e.g., sunny days versus rainy days), there are spatial and temporal fluctuations in the sky. Furthermore, if a room (e.g., an office room) contains a (non-man-made) skylight, there are often other structures visible in the surrounding area, such as trees and buildings. Therefore, this visual effect can be further enhanced by promoting changes in lighting and / or by providing light that makes the structure more visible.

[0058] Therefore, in an embodiment, one or more light generating devices may be configured such that in a first operating mode, one or more of the following applies: (a) a second portion of the device light has a spatial or temporal variation in one or more of spectral power and radiant flux, or (b) an object is configured to intercept a portion of the second portion of the device light propagating to the second light escaping region.

[0059] In another embodiment, one or more light generating devices may be configured such that, in a first operating mode, a second portion of the device light has a spatial or temporal variation in one or more of the spectral power distribution and the radiant flux, particularly having at least a spatial variation in the spectral power distribution, or particularly having at least a temporal variation in the spectral power distribution, particularly having at least a spatial variation in the radiant flux, or particularly having at least a temporal variation in the radiant flux.

[0060] The term "radiative flux" can specifically refer to the radiant energy emitted per unit time (by the one or more light-generating devices). The terms "intensity" or "radiative power" can also be used instead of "radiative flux." The term "radiative flux" can be expressed in units of energy, such as watts. The term "spectral power distribution" relating to device light can refer here to the energy intensity of the device light as a function of wavelength. Therefore, "variation in the spectral power distribution" of device light can refer to the wavelength-dependent variation in the intensity distribution of the device light.

[0061] For example, by varying the radiant flux and / or spectral power distribution in time and space, the lighting module can provide a sunset and / or sunrise light experience.

[0062] In other embodiments, the one or more light-generating devices may be configured such that, in the first operating mode, an object is configured to intercept a portion of the second portion of the device light propagating into the second light escaping zone. For example, a landscape object such as a (semi-transparent) image of a tree or church may be positioned downstream of the second light escaping zone (starting from the third light escaping zone). In embodiments, the object may be (substantially) static. In further embodiments, the object may move and / or change shape (over time), particularly moving or particularly changing shape, such as moving and changing shape, for example, in the case of clouds, moving along the second light escaping zone while changing shape.

[0063] Those skilled in the art will appreciate that numerous variations are possible in terms of spatial and temporal changes, as well as in terms of different (landscape) objects, without departing from the concept of the invention. For example, in an embodiment, one or more light generating devices may be configured such that, in a first operating mode, (with respect to a second portion of device light received at a second light escaping zone) one or more of the following are applied: (a) the spectral power distribution of the second portion of the device light varies over time; (b) the spectral power distribution of the second portion of the device light varies over the second light escaping zone; (c) the radiant flux of the second portion of the device light varies over time; (d) the radiant flux of the second portion of the device light varies over the second light escaping zone; (e) a stationary object is configured to intercept a portion of the second portion of the device light propagating to the second light escaping zone; (f) a moving object is configured to intercept a portion of the second portion of the device light propagating to the second light escaping zone; and (g) a shape-changing object (whose shape changes over time) is configured to intercept a portion of the second portion of the device light propagating to the second light escaping zone.

[0064] For example, in one embodiment, the light generation system (especially the control system) may be configured to change the radiant flux or spectral power distribution of the device light (especially a second portion of the device light) temporally and / or spatially. In another embodiment, the light generation system, especially the control system, may be configured to provide temporal variation of the device light by moving one or more light generation devices (at least a portion thereof). Thus, in one embodiment, one or more light generation devices (at least a portion thereof) may be movable.

[0065] For example, in one embodiment, one or more light generating devices may include a movable projection device configured to generate a beam of light from a projection device. In another embodiment, one or more light generating devices may (further) include a fixed projection device configured to generate a beam of light from a projection device. In particular, the (moving / stationary) projection device may be configured to project an image onto or behind a second light escaping area. In particular, the projection device or "projector" or "image projector" may be an optical device that projects an image (or moving image) onto a surface, such as a projection screen, or, for example, the inner surface of a housing (see above).

[0066] For example, in embodiments where one or more light generating devices include a projection device, the projection device may be specifically configured to illuminate a housing window included by a first light escaping region. Therefore, in embodiments, the first light generating device (see above) may include a projection device.

[0067] Similarly, in embodiments where one or more light generating devices include a projection device, the projection device may be specifically configured to illuminate a light-transmitting element contained in the second light escaping region. Therefore, in embodiments, the second light generating device (see above) may include a projection device.

[0068] In another embodiment where one or more light generating devices include a projection device, the projection device may be configured to illuminate a light-reflecting wall included in the housing (see above).

[0069] In another embodiment, one or more light generating devices may be configured such that, in a first operating mode, a second portion of the device light received at the second light escaping zone displays at least temporarily one or more objects selected from landscapes, horizons, buildings, and clouds, particularly at least temporarily displaying landscapes, or particularly at least temporarily displaying horizons, or particularly at least temporarily displaying buildings, or particularly at least temporarily displaying churches. The term "landscape" herein may particularly refer to features of a landscape, such as mountains and / or waterfalls.

[0070] The visual appeal of a roof window can be further enhanced by providing the visual sense of a framed roof window, or by providing a substantially 2D structure, such as a drawing or picture, or by providing a (3D) frame (or “beam structure”).

[0071] In an embodiment, the light generation system may include a 2D structure that mimics a window frame, particularly wherein the 2D structure is arranged at one or more of the following locations: (a) the interface between the first and second light escaping regions or (b) the interface between the two second light escaping regions.

[0072] In another embodiment, the light generating system may include a frame (or “beam structure”) mimicking a roof window. Thus, in embodiments, the light generating system may include a frame comprising a plurality of (solid) beams. Specifically, in embodiments, the frame may include a plurality of first beams defining a first light emanating zone. For example, the plurality of first beams may define a rectangular shape, particularly a square shape. In another embodiment, the frame may further include a plurality of second beams (or “roof support columns”), particularly wherein the second beams are arranged perpendicular to the first beams, and particularly wherein the second beams define at least a portion of a second light emanating zone. Specifically, in such embodiments, the lighting module may include a plurality of second light emanating zones, wherein adjacent second light emanating zones are separated by (corresponding) second beams. For example, in such embodiments, the second beams may be arranged at (and mechanically connected to) the corners of the rectangular shape of the first beams. In other embodiments, the frame may (only) include second beams, wherein the second beams are arranged to bridge at least a portion of the distance between the first and third light emanating zones. In such an embodiment, the second beam may be opaque and configured to support the luminescent surface or light transmission window (see above) or white diffuse element (see above) of the first light generating device, particularly supporting the luminescent surface, or particularly supporting the light transmission window, or particularly supporting the white diffuse element.

[0073] In one embodiment, the second beam may include a first region and a second region, wherein the first region and the second region differ in (surface) color, specifically wherein the color of the first region is a shadow of the color of the second region, i.e., the first region is darker than the second region. In another embodiment, at least a portion of the second beam may include a color gradient, particularly a shadow gradient. The presence of color difference (especially shadow) on the surface of the second beam can enhance the visual effect of sun direction by mimicking natural shadows. Specifically, color gradient differences may enhance the visual effect of sun direction, i.e., by using whiter or darker paint in some sections of the window frame to represent sunlit and shadowed areas.

[0074] Alternatively or additionally, the visual effect of the sun's direction can be provided by spatially varying the intensity of the device light traveling from the first light escape zone. For example, in one embodiment, the light generating device may be configured to spatially vary the amount of device light received at the first light escape zone (particularly at the light transmission window or at the white diffuser element). Such embodiments can further facilitate changing the amount of device light over time, which can provide a visual experience simulating the Earth's rotation relative to the sun. In other embodiments, a layer with spatially varying optical properties (e.g., a thin, transparent plastic sheet) may be arranged on the surface of the light transmission window or the white diffuser element, particularly on the surface facing the third light escape zone. In particular, a (constant) profile may be provided that specifically matches the second beam (see above). Thus, the spatially varying flux can enhance the experience of the sun's position by providing the visual effect of shadows projected by the second beam.

[0075] In a cross-section parallel to the ceiling, a skylight can typically have a rectangular shape. Therefore, in embodiments, in a cross-section parallel to the ceiling, the lighting module (especially the third light emanating zone) can have a rectangular shape. To some extent, in embodiments, in a cross-section parallel to the ceiling, the frame can have a rectangular shape. However, other shapes are not excluded. For example, in a cross-section parallel to the ceiling, the lighting module is not necessarily rectangular (or square); it can be circular (e.g., ring-shaped) or have any other shape (e.g., hexagonal). Similarly, in a rectangular arrangement, the lighting module can include four segments of second light emanating zones, or it can include three or six (a) segments of second light emanating zones, for example, arranged in a triangular or hexagonal configuration. Therefore, the lighting module of the present invention can include one, two, three, or more second light emanating zones (mimicking windows), rather than the default four "windows." The second light emanating zones can be of equal size, but can also vary in size.

[0076] In embodiments where the lighting module includes a plurality of second light emanating zones, the lighting module can be configured to independently control the generation of light in each of the second light emanating zones. In particular, the lighting module can be configured such that at least two of the second light emanating zones differ in relation to the object being displayed (e.g., a landscape).

[0077] In embodiments, the first light emanating area may have a plate-like or planar shape. Therefore, in embodiments, the first light emanating area may have a "flat" shape. Generally, in embodiments, the first light emanating area may be arranged substantially parallel to the (suspended) ceiling. However, in certain embodiments, the first light emanating area may be arranged at an angle to the (suspended) ceiling. Therefore, the visual effect of a sloping roof can be provided.

[0078] In other embodiments, the first light escaping region may have a curved or wavy shape, which can enrich the light scene experience, for example, due to a light transmission window or white diffuser with a curved or wavy surface.

[0079] In another aspect, the present invention can provide an interior space (or "space") including the light generating system of the present invention. In embodiments, the space may include one or more of walls, sloping walls, room dividers, roofs, sloping roofs, and ceilings. Specifically, the interior space may also include a light generating system functionally coupled to the ceiling, such as a light generating system suspended from the roof, sloping roof, or ceiling. In other embodiments, the light generating system may be physically attached to the ceiling, such as by screws or fasteners. Thus, in this way, the light generating system can be functionally coupled to the ceiling. Further, in embodiments, the light generating system may be configured to illuminate the interior space with system light, particularly with light from a first lighting module and light from a second lighting module. Specifically, the interior space may include a ceiling, particularly a suspended ceiling, wherein the lighting module is functionally coupled to the ceiling. In embodiments, the (suspended) ceiling may include a recess in which the lighting module is disposed.

[0080] The term "indoor space" or "space" may, for example, refer to a portion of a hospitality area, such as a restaurant, hotel, clinic, or hospital. The term "space" may also refer to a portion of an office, department store, warehouse, cinema, church, theater, library, etc. The term "space" may also refer to a portion of a workspace, such as an office, factory, power plant (like a nuclear power plant, gas-fired power plant, coal-fired power plant, etc.). For example, the term "space" may also refer to a control room, security room, etc. Specifically, the term "space" may refer to an indoor space herein. In other embodiments, the term "space" may also refer to a toilet room or bathroom. In embodiments, the term "space" may also refer to a conference room, classroom, indoor corridor, indoor hallway, indoor space in a senior living facility, indoor space in a nursing home, etc. In embodiments, the term "space" may refer to an indoor sports space, such as a gym, gymnastics hall, indoor ball sports space, ballet studio, swimming pool, changing room, etc. In embodiments, the term "space" may refer to an (indoor) bar, (indoor) disco, etc.

[0081] In an embodiment, the indoor space, particularly the light generating system, may include a control system configured to control the light generating system, particularly the lighting module, based on one or more of the following: input signals from a user interface, sensor signals from sensors, and timers.

[0082] Specifically, in an embodiment, the indoor space may include sensors, wherein the sensors are configured to: (i) detect the presence and / or movement of people in the indoor space; and (ii) provide relevant sensor signals to a control system, wherein the control system is configured to control a light generation system, particularly a lighting module, based on the sensor signals.

[0083] In another embodiment, the control system can be configured to control the light generating system, particularly the lighting module, based on local weather conditions at the indoor space (i.e., the geographical location of the indoor space). In another embodiment, the control system can be configured to control the light generating system, particularly the lighting module, based on online signals; that is, the control system can be configured to receive and / or acquire data from online resources and can be configured to control the light generating system based on that data.

[0084] The terms “upstream” and “downstream” refer to arrangements of matters or characteristics of the propagation of light from a light-generating device (in particular, a light source), wherein a second position in the beam closer to the light-generating device is “upstream” relative to a first position within the beam from the light-generating device, and a third position in the beam further away from the light-generating device is “downstream.” The terms “visible,” “visible light,” or “visible emission,” and similar terms refer to light having one or more wavelengths in the range of about 380-780 nm. In this document, UV may particularly refer to wavelengths selected from the range of 190-380 nm, for example, wavelengths selected from the range of 200-380 nm.

[0085] Light generation systems can be, for example, part of or applied to the following systems: office lighting systems, home systems, shop lighting systems, household lighting systems, and disinfection systems.

[0086] The control system can also be configured to receive and execute commands from a remote control. In an embodiment, the control system can be controlled via an app on a device, such as a portable device like a smartphone or iPhone, tablet computer, etc. Therefore, the device is not necessarily coupled to the lighting system, but can be (temporarily) functionally coupled to the lighting system. Therefore, in an embodiment, the control system can (also) be configured to be controlled by an app on a remote device.

[0087] As an alternative to the terms "lighting device" or "lighting system" and similar terms, the terms "light generating device" or "light generating system" (and similar terms) may also be used. A lighting device or lighting system may be configured to generate device light (or "lighting device light") or system light ("or lighting system light"). The lighting device may include a light source. In embodiments, device light may include one or more of light from a light source and converted light from a light source (such as light from a luminescent material).

[0088] Light generation systems can, in particular, include one or more solid-state light sources. The light generated in the light generation systems described herein can, in particular, be generated by these solid-state light sources. Therefore, system light can include light from one or more solid-state light sources, such as LEDs. Attached Figure Description

[0089] Embodiments of the invention will now be described by way of example only with reference to the schematic accompanying drawings, in which corresponding reference numerals indicate corresponding parts, and wherein: Figure 1A-1E An embodiment of the light generation system is schematically depicted; Figures 2A to 2B Other embodiments of the light emission region of the light generation system are schematically depicted; Figure 3 An embodiment of the second light escape region of the light generation system is schematically depicted; Figure 4 An example of an interior space is schematically depicted.

[0090] The illustrations may not be drawn to scale. Detailed Implementation

[0091] Figure 1A An embodiment of a light generation system 1000 including an illumination module 1500 is schematically depicted. In the depicted embodiment, the illumination module 1500 includes a skylight module. Further, the depicted illumination module 1500 includes one or more light generation devices 100, a first light emanating region 1510, a second light emanating region 1520, and a third (transmissive) light emanating region 1530. As indicated by the arrows, the one or more light generation devices 100 are configured to generate device light 101, particularly directed toward the second light emanating region. In the illustrated embodiment, the first light emanating region 1510 and the second light emanating region 1520 are configured at an angle (α) selected from the range of 30-150°; specifically, in the depicted embodiment, α can be (about) 90°. Furthermore, a first distance d1 between the first light emanating region 1510 and the third light emanating region 1530 can be at least partially bridged by the second light emanating region 1520. The light generation system 1000 also includes a system-side window 1010, wherein the system-side window 1010 includes a third light escaping region 1530.

[0092] Reference numerals 1512, 1522, and 1532 refer to the first, second, and third light emission windows of the first, second, and third light emission regions 1510, 1520, and 1530, respectively. In one embodiment, the light emission window may comprise a solid material, particularly a solid translucent material. In another embodiment, the light emission window may be substantially an open space, i.e., it may contain air.

[0093] Figure 1A A first operating mode of the light generation system is further illustrated schematically. Specifically, the depicted light generation system 1000 is configured such that, in the first operating mode, the light generation system 1000 provides a first module light 1511 and a second module light 1512, wherein the first module light 1511 includes a first portion of the device light 101 propagating from a first light escaping region 1510 and passing through a third light escaping region 1530, and wherein the second module light 1521 includes a second portion of the device light 101 propagating from a second light escaping region 1520 and passing through the third light escaping region 1530. In another embodiment, the first module light 1511 and the second module light 1521 may differ in one or more aspects of (i) the color point and uniformity of the light 1511, 1522 on the respective light escaping regions 1510, 1520.

[0094] In the illustrated embodiment, the light generation system 1000, particularly the illumination module 1500, also includes a housing 1400, wherein the housing 1400 includes a housing window 1430. Specifically, the housing window 1430 may include (or "define") a third light escaping region 1530. The third light escaping region 1530 may be particularly disposed on the surface of the housing window 1430 facing away from the first light escaping region 1510. In particular, the housing window 1430 may include a third light escaping window 1532.

[0095] In the depicted embodiment, a portion of the device light 101 may pass through the second light escaping region 1520, then be reflected by a white diffuser element 1515 including a first light escaping region 1510, and travel therethrough through a housing window 1430 including a third light escaping region 1530 as the first module light 1511. Specifically, in the depicted embodiment, the illumination module 1500 includes a white diffuser element 1515 that is reflective to white light; wherein the white diffuser element 1515 is configured to reflect at least a portion of the white light of the device light 101. In such embodiments, the white diffuser element 1515 may particularly include (or "define") the first light escaping region 1510.

[0096] Similarly, a portion of the device light 101 may pass through the second light escaping region 1520 and be reflected or scattered (directly) toward the housing window 1430 containing the third light escaping region 1530 as the second module light 1521. For example, in an embodiment, the device light 101 may include blue light, and the second light escaping region 1520 may be defined by a light transmission window including a Rayleigh scatterer for blue light, i.e., blue light may be selectively scattered at the light transmission window. In such embodiments, the light transmission window may include (or "define") the second light escaping region 1520.

[0097] Therefore, in one embodiment, the first module light 1511 can be white light, while the second module light 1521 can be blue light, wherein the first module light 1511 can be white light having a first correlated color temperature (CCT1) of at most 10000K (such as at most 8000K, especially at most 6000K). In another embodiment, the second module light 1521 can (also) be white light, particularly white light having a second correlated color temperature (CCT2) of at least 1500K (such as at least 1800K, especially at least 2500K), and wherein CCT2-CCT1 ≥ 300K, such as ≥ 500K, especially ≥ 750K.

[0098] In the illustrated embodiment, the light generation system 1000 also includes a control system 300. The control system 300 can be configured to control the lighting module 1500, and particularly (individually) control one or more light generation devices 100, such as based on input signals from the user interface 301, sensor signals from the sensor 310, and one or more timers (see also...). Figure 4 Control can be performed using sensors. For example, in an embodiment, the light generating system 1000 may also include a sensor 310, wherein the sensor 310 is configured to: (i) sense the presence and / or movement of a person, and (ii) provide relevant sensor signals to the control system, wherein the control system 300 is configured to control the lighting module 1500 based on the sensor signals, and in particular to control one or more light generating devices 100.

[0099] Figure 1B Another embodiment of the light generation system 1000 is schematically depicted, wherein one or more light generation devices include a first light generation device 110 and a second light generation device 120. The first light generation device 110 may be configured to provide a first device light 111, which may particularly comprise white light. Similarly, the second light generation device 120 may be configured to provide a second device light 121, which may particularly comprise blue light, or may particularly comprise white light (having a lower CCT than the first device light 111). Specifically, a first module light 1511 may include at least a portion of the first device light 111 generated by the first light generation device 110, and similarly, a second module light 1521 may include at least a portion of the second device light 121 generated by the second light generation device 120.

[0100] In the depicted embodiment, the illumination module 1500 includes a white diffuser element 1515 that is transmissive to white light, and particularly translucent to white light. The white diffuser element 1515 may be configured to transmit at least a portion of the white light of the device light 101, and in a further embodiment, may include (or "define") a first light escaping region 1510.

[0101] Therefore, in the depicted embodiment, the first light generating device 110 can provide a first device light 111, wherein in a first operating mode (of the light generating system 1000), at least a first portion of the first device light can propagate from the first light escaping region 1510 through the third light escaping region 1510 as a first module light 1511. Similarly, the second light generating device can provide a second device light 121, wherein in a first operating mode (of the light generating system 1000), at least a portion of the second device light can propagate from the second light escaping region 1520 through the third light escaping region 1530 as a second module light 1521.

[0102] Figure 1B An embodiment is further illustrated schematically, wherein the first light generating device 110 includes a light transmission window 115 comprising a light transmission material, wherein the light transmission window 115 includes (or "defines") a first light escaping region 1510.

[0103] Figure 1C Another embodiment of the light generation system 1000 is schematically depicted. In the depicted embodiment, the housing 1400 has a housing shape that approximates a dome. Specifically, one or more light generation devices 100 may be arranged at the bottom of the "dome" and may be configured to illuminate a light reflector wall 1405, particularly the light reflector wall 1405 illuminating the dome-shaped roof. Thus, an image can be projected onto the roof of the dome, which can be seen through the third light escaping zone 1530, while the light generation devices 100 remain invisible.

[0104] Therefore, in an embodiment, the housing 1400 may have a dome-like shape with a dome-shaped roof, and in particular, one or more light generating devices (at least a portion thereof) are configured to illuminate the dome-shaped roof.

[0105] In the illustrated embodiment, the housing window 1430 may in particular be an opening in the housing 1400.

[0106] Figure 1C The illustration further schematically depicts an illumination device 1500 in which the third light emanation zone 1530 contains air. In such embodiments, the third light emanation zone 1530 may be arranged parallel to the surface of the ceiling 1310, wherein the illumination device 1500 is arranged to be recessed into the ceiling 1310.

[0107] Figure 1D Another embodiment of the light generation system 1000 is schematically depicted. Similar to... Figure 1C , Figure 1D The housing in one embodiment has a dome-like shape. However, in Figure 1DIn one embodiment, one or more light generating devices 100 include (i) a first light generating device 110 and (ii) a second light generating device 120. The first light generating device 110 is disposed within the roof element and defines a first light escaping area 1510. The second light generating device 120 is disposed on the side of the roof element opposite to the first light generating device 110 and is configured to provide second device light 121 to a light reflector 1405 (particularly a light reflector 1405 of a dome-shaped roof). Thus, the second light generating device 120 can project an image onto the light reflector 1405 while being obscured and invisible.

[0108] In the illustrated embodiment, one or more light generating devices 100, particularly a second light generating device 120, include a projection device 190 configured to generate a beam of projection device light 191. The projection device 190 can be configured to illuminate a light reflector 1405 included by the housing 1400, thereby projecting an image onto the light reflector 1405. In the embodiment, the projection device 190 can be movable, particularly configured to be movable by the control system 300, thereby facilitating the provision of varying images, such as for providing the visual effect of moving clouds.

[0109] In other embodiments, the projection device 190 may be configured to illuminate (i) the light transmission element contained in the second light escaping region 1520 or (ii) the light transmission element defining the second light escaping region 1520.

[0110] In another embodiment, the first light generating device 110 may also include a projection device 190.

[0111] Figure 1E An embodiment of the light generation system 100 is schematically depicted, wherein the illumination module 1500 includes a plurality of second light escaping zones 1520 separated by beams 1610, particularly second beams 1612.

[0112] Specifically, in the illustrated embodiment, the light generation system 1000 includes a frame 1600, which includes a plurality of second beams 1610, 1612. The second beams 1610, 1612 are arranged to bridge at least a portion of the distance d1 between the first light emanating region 1510 and the third light emanating region 1530. In the depicted embodiment, the third light emanating region 1530 is arranged parallel to the ceiling 1310 and includes air, while the first light emanating region 1510 is included (or “defined”) by a white diffuser element 1515. The second beams 1610, 1612 are also arranged to define at least a portion of a second light emanating region 1520, particularly wherein adjacent second light emanating regions 1520 are separated by corresponding second beams 1610, 1612. In the embodiment, the second beams 1610, 1612 may be opaque and configured to support a light-emitting surface or light-transmitting window or white diffuser element 1515 of the first light generation device 110.

[0113] As in Figure 1E The presence of the frame 1600 (especially beam 1610), which is clearly visible to the naked eye, enhances the visual effect of the skylight. In the depicted embodiment, the lighting module 1500 is further configured such that, in a first operating mode, a second portion of the device light received at at least one of the second light escaping zones displays clouds.

[0114] Figure 2A A bottom perspective view of two embodiments of the light generation system 1000 is schematically depicted, wherein the light generation system 1000 is arranged in a ceiling 1310, and more particularly, arranged to be recessed into the ceiling 1310. The shaded area schematically indicates the second light emanating area 1520, while the closed rectangular area schematically indicates the first light emanating area 1510. In the bottom view, both the first light emanating area 1510 and the second light emanating area 1520 are visible through the third light emanating area 1530.

[0115] In embodiment (II), the lighting device 1500 further includes a fourth light emanating region 1540. In such an embodiment, the light generating system 1000, and in particular the lighting device 1500, can be configured to further provide a fourth module light. Specifically, in a first operating mode, the light generating system 1000 can provide the fourth module light, which propagates from the fourth light emanating region 1540. The fourth light emanating region may at least partially surround the third light emanating region 1530 in a bottom view, for example, in the depicted embodiment, where the fourth light emanating region 1540 (completely) surrounds the third light emanating region 1530. In other embodiments, the fourth light emanating region 1540 may be arranged coplanarly with the third light emanating region 1530.

[0116] In the depicted embodiment, the third light emanating region 1530 has a rectangular shape. In other embodiments, the third light emanating region may also have different shapes, such as (different) polygonal shapes with 3-8 sides (especially 3, 4 or 6 sides), or for example, circular shapes (e.g., ring-shaped).

[0117] Figure 2B Embodiments of the lighting module 1500 are schematically depicted, particularly embodiments of the arrangement of the first, second, and third light emanating regions 1510, 1520, and 1530. In embodiments (I) and (III), the second light emanating region includes a solid element, such as a light-transmitting window, while in embodiment (II), the second light emanating region includes an opening, i.e., the second light emanating region 1520 may substantially comprise air. Similarly, in embodiment (III), the third light emanating region 1530 includes a solid element, such as a (solid and transparent) system end window 1010, while in embodiments (I) and (II), the third light emanating region includes an opening, i.e., the third light emanating region may substantially comprise air.

[0118] Figure 3 Three embodiments of the second light emanation zone 1520 are schematically depicted, wherein a second portion of the device light 101 has spatial variations in one or more of the spectral power distribution and radiant flux. Specifically, embodiments (I), (II), and (III) schematically depict clouds, a landscape including mountains, and buildings, respectively. The image on the second light emanation zone can be provided, in particular, by projecting the image onto a surface (see above) or by arranging objects (or “blocks”) to intercept a portion of the device light 101 propagating to the second light emanation zone 1520.

[0119] Therefore, in an embodiment, one or more light generating devices 100 may be configured such that, in a first operating mode, an object is configured to intercept a portion of a second portion of the device light 101 propagating to the second light escaping region 1520. In particular, one or more light generating devices 100 may be configured such that, in the first operating mode, the second portion of the device light 101 received at the second light escaping region 1520 at least temporarily displays one or more objects selected from landscapes, horizons, buildings, and clouds.

[0120] Additionally or alternatively, in embodiments, the second portion of the device light 101 may have a time variation in one or more of the spectral power distribution and radiant flux. This time variation may be provided, for example, by altering the spectral power distribution of one or more light generating devices, but may be further provided by moving the light source and / or object (or “obstacle”).

[0121] Therefore, the light generation system 1000, especially the illumination module 1500, can be configured to provide a second device light 121 with spatial and / or temporal variations. For example, in an embodiment, one or more light generating devices 100 may be configured such that, in a first operating mode, one or more of the following apply (for the second portion of device light 101 received at the second light escaping region 1520): (a) the spectral power distribution of the second portion of device light 101 varies over time; (b) the spectral power distribution of the second portion of device light 101 varies over the second light escaping region 1520; (c) the radiant flux of the second portion of device light 101 varies over time; (d) the radiant flux of the second portion of device light 101 varies over the second light escaping region 1520; (e) a stationary object is configured to intercept a portion of the second portion of device light 101 propagating to the second light escaping region 1520; (f) a moving object (especially moving over time) is configured to intercept a portion of the second portion of device light 101 propagating to the second light escaping region 1520; and (g) a shape-changing object (whose shape changes over time) is configured to intercept a portion of the second portion of device light 101 propagating to the second light escaping region 1520.

[0122] Figure 4 An embodiment of an interior space 1300 is schematically depicted. In the depicted embodiment, the interior space 1300 includes a ceiling 1310 and a light generating system 1000, wherein a lighting module 1500 (of the light generating system 1000) is functionally coupled to the ceiling 1310. Specifically, in the illustrated embodiment, the lighting module 1500 is recessed into the ceiling 1310. In another embodiment, the ceiling 1310 may include a suspended ceiling.

[0123] In the depicted embodiment, the indoor space 1300 further includes a control system 300, wherein the control system 300 is configured to control the lighting module 1500, in particular based on input signals from a user interface, sensor signals from sensor 310, and one or more timers. Specifically, in another embodiment, sensors may be configured to detect the presence and / or movement of a person in the indoor space and provide relevant sensor signals to the control system 300, wherein the control system is configured to control the lighting module 1500 based on the sensor signals. Specifically, the control system 300 may turn the light generating device 100 on or off based on the presence or (persistent) absence of a person in the indoor space.

[0124] Reference numeral 301 indicates a user interface that can be functionally coupled to or included in the control system 300 of the light generation system 1000. Reference numerals 1305, 1307, and 1310 indicate the floor, walls, and ceiling of the interior space 1300, respectively.

[0125] The term “multiple” refers to two or more. Those skilled in the art will understand the terms “substantially” or “approximately” and similar terms used herein. The term “substantially” or “approximately” may also include embodiments having “entire,” “complete,” “all,” etc. Therefore, in embodiments, the adjective “substantially” or “approximately” may also be removed. Where applicable, the term “substantially” or “approximately” may also refer to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term “comprising” also includes embodiments in which the term “comprising” means “consisting of.” The term “and / or” particularly refers to one or more items mentioned before and after “and / or.” For example, the phrase “item 1 and / or item 2” and similar phrases may refer to one or more of items 1 and 2. In one embodiment, the term “comprising” may mean “consisting of,” but in another embodiment it may also mean “comprising at least the defined kinds and optionally one or more other kinds.” The use of the verb “comprising” and its variations does not exclude the presence of elements or steps other than those stated in the claims. Unless the context explicitly requires otherwise, throughout the specification and claims, the words “comprising,” “including,” etc., should be interpreted in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is, in the sense of “including but not limited to.” The article “a” or “an” preceding an element does not exclude the existence of multiple such elements.

[0126] Furthermore, the terms first, second, third, etc., used in the specification and claims are used to distinguish similar elements and are not necessarily used to describe order or chronological sequence. It should be understood that the terms thus used are interchangeable where appropriate, and the embodiments of the invention described herein can operate in any order other than that described or shown herein. Any reference signs placed between parentheses in the claims should not be construed as limiting the claims.

[0127] In this document, apparatus, devices, or systems may be described, particularly during operation. As will be apparent to those skilled in the art, the invention is not limited to the methods of operation, or the apparatus, devices, or systems in operation.

[0128] It should be noted that the above embodiments are illustrative and not limiting of the invention, and those skilled in the art will be able to devise many alternative embodiments without departing from the scope of the appended claims.

[0129] This invention can be implemented by hardware comprising several different elements and by a suitably programmed computer. In the apparatus claims, device claims, or system claims that enumerate several means, some of these means may be embodied by the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not imply that combinations of these measures cannot be used advantageously. In another aspect, the invention (therefore) provides a software product that, when run on a computer, is capable of performing one or more embodiments of the methods described herein.

[0130] The present invention also provides a control system that can control the device, apparatus, or system, or can perform the methods or processes described herein. Furthermore, the present invention provides a computer program product that, when functionally coupled to the device, apparatus, or system or a computer included in the device, apparatus, or system, controls one or more controllable elements of the device, apparatus, or system.

[0131] The invention is further applicable to apparatuses, devices, or systems that include one or more characterizing features described in the specification and / or shown in the drawings. The invention further relates to methods or processes that include one or more characterizing features described in the specification and / or shown in the drawings.

[0132] The various aspects discussed in this patent can be combined to provide additional advantages. Furthermore, those skilled in the art will understand that various embodiments can be combined, and even two or more embodiments can be combined. Additionally, some features can form the basis of one or more divisional applications.

Claims

1. A light generation system (1000) comprising an illumination module (1500), wherein the illumination module (1500) includes a skylight module; wherein the illumination module (1500) includes one or more light generation devices (100), a first light escaping region (1510), a second light escaping region (1520), and a third light escaping region (1530); wherein: The one or more light generating devices (100) are configured to generate device light (101); The first light escaping region (1510) and the second light escaping region (1520) are configured at an angle (α) selected from the range of 30-150°; wherein a first distance (d1) between the first light escaping region (1510) and the third light escaping region (1530) is at least partially bridged by the second light escaping region (1520); wherein the light generation system (1000) includes a system-end window (1010), wherein the system-end window (1010) includes the third light escaping region (1530); and The light generating system (1000) is configured such that, when coupled to a ceiling or recessed ceiling, in a first operating mode, the light generating system (1000) provides a first module light (1511) representing sunlight in the vertical direction and a second module light (1521) representing a skylight in the horizontal direction, wherein the first module light (1511) includes a first portion of the device light (101) that propagates from the first light escaping area (1510) and passes through the third light escaping area (1530), and wherein the second module light (1521) includes a second portion of the device light (101) that propagates from the second light escaping area (1520) and passes through the second light escaping area (1520) and through the third light escaping area (1530). The first module light (1511) and the second module light (1521) differ in one or more of the following aspects: (i) color point and (ii) uniformity of the light (1511, 1522) in the corresponding light escape regions (1510, 1520); and The first module light (1511) has a first correlated color temperature (CCT1) in the range of 1800-6000K, and the second module light (1521) is blue light or has a second correlated color temperature (CCT2) in the range of 6500-20000K.

2. The light generation system (1000) according to claim 1, wherein, The lighting module (1500) includes a housing (1400), wherein the housing (1400) includes a housing window (1430), wherein the housing window (1430) includes the third light escaping area (1530).

3. The light generation system (1000) according to claim 2, wherein, The housing window (1430) is an opening in the housing (1400).

4. The light generation system (1000) according to any one of the preceding claims, wherein, The device light (101) includes blue light, and wherein the second light escaping region (1520) is defined by a light transmission window including a Rayleigh scatterer for blue light.

5. The light generation system (1000) according to any one of the preceding claims, wherein, The device light (101) includes white light, wherein the illumination module (1500) includes a white diffuser element (1515) that is reflective or translucent to white light; wherein the white diffuser element (1515) is configured to reflect or transmit at least a portion of the white light of the device light (101), and wherein the white diffuser element (1515) includes the first light escaping region (1510).

6. The light generation system (1000) according to any one of the preceding claims, wherein, The one or more light generating devices (100) include a first light generating device (110) configured to generate a white first device light (111); wherein the light generating system (1000) is configured such that in the first operating mode, at least a portion of the first white device light (111) escapes from the first light escaping region (1510).

7. The light generation system (1000) according to claim 6, wherein, The first light generating device (110) includes a light transmission window (115), which includes a light transmission material, wherein the light transmission window (115) includes the first light escaping region (1510).

8. The light generation system (1000) according to any one of the preceding claims, wherein, The one or more light generating devices (100) include a second light generating device (120) configured to generate a second device light (121); wherein the light generating system (1000) is configured such that at least a portion of the second device light (121) escapes from the second light escaping region (1520) in the first operating mode.

9. The light generation system (1000) according to any one of the preceding claims, wherein, The first module light (1511) is white light with a first correlated color temperature (CCT1) of up to 8000K, and wherein the second module light (1521) is (ii) white light or (i) blue light with a second correlated color temperature (CCT2) of at least 1800K; wherein when both the first module light (1511) and the second module light (1521) are white light, then CCT2-CCT1≥500K.

10. The light generation system (1000) according to any one of the preceding claims, wherein the one or more light generation devices (100) are configured such that, in the first operating mode, one or more of the following applies: (a) the second portion of the device light (101) has a spatial or temporal variation in one or more of the spectral power distribution and radiant flux, or (b) an object is configured to intercept a portion of the second portion of the device light (101) propagating to the second light escaping region (1520).

11. The light generation system (1000) according to any one of the preceding claims, wherein, The one or more light generating devices (100) include a projection device (190) configured to generate projection device light (191), wherein the projection device (190) is configured to illuminate one or more of the following: (a), (i) a light transmission element included in the second light escaping region (1520) or (ii) a light transmission element defining the second light escaping region (1520); and (b) a light reflector wall (1405) included in the housing (1400) as defined in claim 2.

12. The light generation system (1000) according to any one of claims 10 to 11, wherein, The one or more light generating devices (100) are configured such that, in the first operating mode, the second portion of the device light (101) received at the second light escaping zone (1520) displays at least temporarily one or more objects selected from landscapes, horizons, buildings, and clouds.

13. The light generation system (1000) according to any one of the preceding claims, wherein, The lighting module (1500) includes a plurality of second light emanating zones (1520), wherein the light generating system (1000) includes a frame (1600) including a plurality of second beams (1612), wherein the second beams (1612) are arranged to: (i) bridge at least a portion of the distance (d1) between the first light emanating zone (1510) and the third light emanating zone (1530); and (ii) define at least a portion of the second light emanating zones (1520).

14. An interior space (1300) comprising a ceiling (1310) and a light generating system (1000) according to any of the preceding claims, wherein the lighting module (1500) is functionally coupled to the ceiling (1310).

15. The interior space (1300) according to claim 14 further includes a control system (300), wherein, The control system (300) is configured to control the lighting module (1500) based on input signals from the user interface, sensor signals from the sensor (310), and one or more timers.

Images