Illumination system for animals that perceive ultraviolet light

Abstract

The invention provides a light generating system (1000) configured to generate system light (1001) having a spectral power distribution with spectral intensities at a plurality of wavelengths in the wavelength range of 380-780 nm, wherein 15-40 % of the total radiant flux relative to the total radiant flux of the system light (1001) in the wavelength range of 380-780 nm is in the wavelength range of 385-440 nm and 60-85 % of the total radiant flux is in the wavelength range of 440-780 nm, and wherein the system light (1001) has an R9 value of maximum 85 and a color rendering index selected from the range of 55-85.

Description

Technical Field

[0001] This invention relates to a light generating system and a lighting device including such a light generating system. The invention also relates to a system for housing animals in a space and a method for illuminating such a space. Background Technology

[0002] Lighting of animal spaces is known in the prior art. For example, US2024032511 describes a lighting system for poultry houses that includes multiple vertically movable lamps that project light onto different areas of the poultry house at pre-arranged times and project light of varying intensities into the poultry house at pre-arranged times by raising and lowering the lamp heights. This lighting system provides adjustable parameters regarding the intensity of light in the illuminated areas of the poultry house and throughout the entire interior of the poultry house.

[0003] US2016 / 030610A1 discloses a luminaire comprising at least one first light source emitting at a peak wavelength in the range of 380 nm to 420 nm and at least one second light source emitting at a different peak wavelength. The combined light output of the at least one first light source and the at least one second light source emits colored light perceived as white light. White light is defined as having a color rendering index (CRI) value greater than about 50. The combined light output has a spectral energy ratio greater than 20% measured in the range of 380 nm to 420 nm.

[0004] US2021 / 187138A1A1 discloses an apparatus for inactivating microorganisms, the apparatus comprising a light emitter configured to emit a first light comprising a first wavelength in the range of 380 nm to 420 nm; a first light conversion material configured to convert a first portion of the first light into at least a second light comprising a second wavelength different from the first wavelength; and a second light conversion material configured to convert a second portion of the first light into at least a third light comprising a third wavelength different from the first wavelength. The first, second, and third lights are mixed to form disinfecting white light, wherein the first light constitutes at least 10% of the disinfecting white light. Summary of the Invention

[0005] The visual sensitivity of many animal species appears to extend to UV-A. In addition to brightness perception, it enables these animals to perceive ultraviolet contrasts in their environment (such as plants or urine stains) and in the feathers or fur of their own kind. The lack of ultraviolet light is thought to lead to harmful unnatural behavior or prevent basic natural functions from taking place. Ultraviolet vision appears to be associated with many bird, mammal, reptile, amphibian, arthropod, and fish species. Therefore, providing ultraviolet light in indoor settings is considered necessary for many animals.

[0006] However, it has been found that while UV sensitivity may be common in many species, orders, or classes, at least for some species, their shortest wavelength photoreceptors are violet-sensitive, not UV-sensitive. As an example, most, but not all, insects have UV photoreceptors. Most Lepidoptera have UV photoreceptors. The Citrus Swallowtail (Papileo Xuthus) has both a UV receptor and a violet receptor (the latter peaking at 390 nm). The closely related Orchard Swallowtail (Papileo Aegeus) lacks this UV receptor and only has a violet photoreceptor peaking at 390 nm. Other examples of violet-sensitive, but not UV-sensitive, insects include the Cattle Ant (Myrmecia gulosa) (412 nm), the Musk Swallowtail (Atrophaneura alcinous) (420 nm), the Spotted Bean White (Colias erate) (400 nm) of the Pieridae family, and the Gourd Noctuid (Anadevidia peponis) (420 nm) of the Noctuidae superfamily. However, many rodents, such as mice, rats, gerbils, and hamsters, are UV-sensitive, while guinea pigs (Cavia porcellus) have a VS (violet-sensitive) cone at 400 nm. In other species, such as rainbow trout (Salmo gairdneri) and brown trout (Salmo trutta), juveniles show peak visual sensitivity in UV-A, which shifts towards violet with age, primarily due to the yellowing of the lens of the eye. Furthermore, chickens and other birds may also exhibit visual sensitivity to violet. Therefore, it has been found that for many animals that have long believed ultraviolet light would be beneficial, providing high-quality illumination, giving full-color vision, and enabling relevant natural behaviors, can be achieved by providing a spectrum rich in violet light rather than with additional UV-A. For example, it has been found that for chickens, using violet light instead of ultraviolet light is at least as effective. Practical experiments have shown that, in addition to positive effects on social and pecking behaviors, providing short-wavelength light can also positively influence other behaviors, such as providing free-range outdoor space, activity, and mating for chickens kept in barns.

[0007] Among other things, based on experiments, the wavelength distribution and radiant power of the violet light source required for sufficient animal violet color vision can be defined. Furthermore, based on the receptor sensitivity shown earlier, a mathematical model describing chicken color vision was developed. A four-color space was defined based on four individual cone cells. For a given spectrum, the reflectance points of a large number of feather samples were calculated. In one analysis, the difference in reflectance points between violet and non-violet reflectance samples from the same bird was used as a quality measure. In another analysis, the total volume of the space spanning all reflectance points in the four-color space was used as a measure of the distinguishability of all feather colors, similar to how gamut area is used in human color spaces. Both methods were used with or without color adaptation corrections similar to Von Kriess's.

[0008] Therefore, one aspect of the present invention is to provide an alternative light generation system, for example for animal lighting, which preferably further eliminates at least partially one or more of the aforementioned disadvantages. The object of the present invention is to overcome or improve at least one disadvantage of the prior art, or to provide a useful alternative.

[0009] According to a first aspect, the present invention provides a light generation system configured to generate system light having a spectral power distribution with spectral intensities at multiple wavelengths within a wavelength range of 380-780 nm. Specifically, in embodiments where the total radiant flux of the system light is relative to the 380-780 nm wavelength range, 15-40% of the total radiant flux is in the 385-440 nm wavelength range, and particularly, 60-85% of the total radiant flux is in the 440-780 nm wavelength range. Further, in embodiments, the system light may have an R9 value of up to 85, and / or may have a color rendering index selected from the range of 55-85. Therefore, in particular, the present invention provides a light generation system configured to generate system light having a spectral power distribution with spectral intensity at multiple wavelengths within a wavelength range of 380-780 nm, wherein 15-40% of the total radiant flux of the system light within the 380-780 nm wavelength range is in the 385-440 nm wavelength range, and 60-85% of the total radiant flux is in the 440-780 nm wavelength range, and wherein the system light has an R9 value of at most 85, and the color rendering index is selected from the range of 55-85. Further, in an embodiment, the spectral power distribution within the 385-440 nm wavelength range may include a spectral maximum value within the 395-435 nm wavelength range.

[0010] This system can be used to illuminate spaces that house one or more (non-human) animals. Furthermore, it can provide lighting that may be beneficial to the animals, such as birds, poultry (like chickens), or rodents. This light can provide spectral intensity within a wavelength range that is useful or necessary for these animals. Furthermore, this light can allow people in the space to perceive animals and objects relatively well visually.

[0011] As indicated above, the present invention provides a light generation system configured to generate system light having a specific spectral power distribution. Also as discussed below, in certain embodiments, the spectral power distribution of the system light is controllable. The light generation system may include a single light generation device or multiple light generation devices. Each light generation device may include one or more light sources, such as solid-state light sources. Further, optionally, the one or more light generation devices may include luminescent materials.

[0012] The term "light source" can, in principle, refer to any light source known in the art. It can be a conventional (tungsten) bulb, a low-pressure mercury lamp, a high-pressure mercury lamp, a fluorescent lamp, or an LED (light-emitting diode). In specific embodiments, the light source includes solid-state light sources (such as LEDs or laser diodes (or "diode lasers")). The term "light source" can also refer to multiple light sources, such as a 2-2000 (solid-state) LED light source. Therefore, the term LED can also refer to multiple LEDs. Furthermore, the term "light source" in embodiments can also refer to so-called chip-on-board (COB) light sources. The term "COB" specifically refers to LED chips in the form of semiconductor chips that are neither packaged nor connected but directly mounted on a substrate such as a PCB. Therefore, multiple light-emitting semiconductor light sources can be configured on the same substrate. In embodiments, a COB is a multi-LED chip configured together as a single lighting module. The term "light source" can also refer to a chip-scale package (CSP). The term "light source" can refer to semiconductor light-emitting devices, such as light-emitting diodes (LEDs), resonant cavity light-emitting diodes (RCLEDs), vertical cavity laser diodes (VCSELs), edge-emitting lasers, etc. The term "light source" can also refer to an organic light-emitting diode (OLED), such as a passive matrix (PMOLED) or an active matrix (AMOLED). In certain embodiments, a light source includes a solid-state light source (e.g., an LED or laser diode). In one embodiment, a light source includes an LED (light-emitting diode). The term "light source" or "solid-state light source" can also refer to a superluminescent diode (SLED). The term "light source" can (therefore) refer to a light-generating element, such as a solid-state light source, or to a package of a light-generating element, such as a solid-state light source, and one or more elements comprising luminescent material and (other) optical devices, such as lenses or collimators. A light-converting element ("converter element" or "converter") can include an element comprising luminescent material. For example, a solid-state light source like a blue LED is a light source. A combination of a solid-state light source (as a light-generating element) and a light-converting element optically coupled to the solid-state light source (e.g., a blue LED and a light-converting element) can also be a light source (but can also be referred to as a light-generating device). Thus, a white LED is a light source (but can also be referred to, for example, as a (white) light-generating device). In embodiments, the term "light source" can also refer to a combination of a light source (such as an LED) and a filter that can alter the spectral power distribution of the light generated by the light source. Specifically, the term "light generating device" can be used to refer to light sources and other (optical components), such as filters and / or beam shaping elements. The term "light source" here can also refer to light sources including solid-state light sources, such as LEDs, laser diodes, or superluminescent diodes. The terms "solid-state light source" or "solid-state material light source" and similar terms can particularly refer to semiconductor light sources, such as light-emitting diodes (LEDs), laser diodes, or superluminescent diodes.

[0013] The light generation system can be specifically configured to provide system light during operation. In the operating mode of the light generation system, the spectral power distribution can include spectral intensities at multiple wavelengths within the 380-780 nm wavelength range. Further, particularly, in embodiments where the total radiant flux of the system light is within the 380-780 nm wavelength range, 15-40% of the total radiant flux is within the 385-440 nm wavelength range. Optionally or additionally, particularly, in embodiments where the total radiant flux of the system light is within the 380-780 nm wavelength range, 60-85% of the total radiant flux is within the 440-780 nm wavelength range. Further, in certain embodiments, the system light can have an R9 value of up to 85. Optionally or additionally, the system light can have a color rendering index selected from the range of 55-85. Such values ​​may be useful from an energy efficiency perspective, while visibility and color rendering may still be sufficient for human tasks performed in space.

[0014] In certain embodiments, the system light may have a color rendering index selected from a range of up to 76, more particularly up to 75. Such a value may be sufficient to perceive animals and / or objects in space well. Further, in certain embodiments, the system light may have an R9 value of up to 25, or even just up to 0. In such embodiments, energy efficiency may be high, while visibility and / or color rendering may still be sufficiently good.

[0015] It appears advantageous when the spectral intensity of 385–440 nm can be substantially within the 395–435 nm wavelength range, and more particularly within the 400–425 nm (sub)wavelength range. Therefore, in a particular embodiment, the spectral power distribution within the 385–440 nm wavelength range may include the spectral maximum (i.e., peak or maximum value) within the 395–435 nm wavelength range, and more particularly within the 400–425 nm (sub)wavelength range.

[0016] The desired spectral power distribution can be provided in several ways. For example, multiple solid-state light sources, such as LEDs, can be used. Alternatively, one or more solid-state light sources, such as PC LEDs (phosphor-converted LEDs), can be used in combination with one or more luminescent materials. PC LEDs can also be used, with each PC LED providing the desired spectrum. However, in other embodiments, two or more solid-state light sources, optionally together with one or more luminescent materials, can provide the desired spectrum.

[0017] In a particular embodiment, the light generation system may include a first luminescent material, wherein at least a portion of the radiant flux in the 385-440 nm wavelength range is provided by the first luminescent material light of the first luminescent material. This luminescent material may be pumped with a (relatively short wavelength) blue (solid-state light source) pump or with a violet pump. Therefore, in an embodiment, the light generation system may include one or more of the following: (i) a blue solid-state light source, serving as a pump source for the first luminescent material, and (ii) a violet solid-state light source configured to provide at least a portion of the radiant flux in the 385-440 nm wavelength range (and, as a solid-state light source, serve as a pump source for the first luminescent material). The violet solid-state light source may have the dual function of providing at least a portion of the radiant flux in the 385-440 nm wavelength range and being pumped by the luminescent material. In such an embodiment, the system light may be provided by one or more PC LEDs. In a particular embodiment, the light generation system may include a (second) luminescent material, wherein at least a portion of the radiant flux in the 440-780 nm wavelength range is provided by the second luminescent material light of the second luminescent material. This luminescent material may be pumped with a (relatively short wavelength) blue (solid-state light source) pump or with a violet pump. Therefore, in an embodiment, the light generation system may include one or more of the following: (i) a blue solid-state light source, serving as a pump source for the second luminescent material, and (ii) a violet solid-state light source configured to provide at least a portion of the radiant flux in the 440-780 nm wavelength range (and, as a solid-state light source, also serving as a pump source for the second luminescent material). The violet solid-state light source may have the dual function of providing at least a portion of the radiant flux in the 385-440 nm wavelength range and being pumped by the luminescent material. In such an embodiment, the system light may be provided by one or more PC LEDs.

[0018] The term "luminescent material" can also refer to a variety of different luminescent materials.

[0019] In yet another embodiment, multiple LEDs are used, wherein the spectral power distribution of the LEDs (without luminescent material) provides the desired spectral power distribution. In such an embodiment, the light generation system may include at least three, such as at least four, different subsets of LEDs, wherein each subset includes one or more LEDs (particularly those of the same bin) (but thus LEDs from different subsets emit in different spectral wavelength ranges (and belong to different bins)).

[0020] In this embodiment, the light generation system is configured to generate system light with a spectral power distribution having spectral intensity across the violet, blue, green, and yellow wavelength ranges. For example, at least four different LEDs, or one or more PC LEDs, can be used. A single PC LED can also be used.

[0021] Furthermore, in certain embodiments, the correlated color temperature can be selected from the range of 1500-15000 K, such as particularly 2000-13000 K, as in the embodiment 2500-12500 K. For example, a CCT between 2500-12000 K is possible.

[0022] In this embodiment, a maximum 45% of the total radiant flux of the system light is in the 580-780 nm wavelength range, relative to the total radiant flux of the system light in the 380-780 nm wavelength range. This may be sufficient for good spectral characteristics in animals.

[0023] Further, particularly regarding the total radiant flux of the system light in the 380-780 nm wavelength range, a portion selected from 15-35% of the total radiant flux is located in the 380-440 nm wavelength range. Optionally or additionally, particularly regarding the total radiant flux of the system light in the 380-780 nm wavelength range, a portion selected from 5-25% of the total radiant flux is located in the 440-480 nm wavelength range. However, alternatively or additionally, particularly regarding the total radiant flux of the system light in the 380-780 nm wavelength range, a portion selected from 25-55% of the total radiant flux is located in the 480-580 nm wavelength range (more particularly from 28-45%). Further, optionally or additionally, particularly regarding the total radiant flux of the system light in the 380-780 nm wavelength range, a portion selected from 10-45% of the total radiant flux is located in the 580-780 nm wavelength range. Therefore, in embodiments of the total radiant flux of the system light relative to the wavelength range of 380-780 nm: (A) a range of 15-35% of the total radiant flux in the wavelength range of 380-440 nm; (B) a range of 5-25% of the total radiant flux in the wavelength range of 440-480 nm; (C) a range of 25-55% of the total radiant flux in the wavelength range of 480-580 nm (more particularly a range of 28-45%); and (D) a range of 10-45% of the total radiant flux in the wavelength range of 580-780 nm.

[0024] Specifically, the system light may have no or only a small amount of UV radiation. Therefore, in certain embodiments, the total radiant flux of the system light in the 200-780 nm wavelength range is at most 5%, such as at most 2%, and more particularly at most 1% (e.g., selected from the range of 0-0.5%) in the 200-380 nm wavelength range. For human safety and / or energy efficiency, UV radiation may be less necessary.

[0025] A control system can be used to control the radiant flux of system light. When the light generation system includes two or more different light generation devices (with different spectral power distributions), the control system can also be applied to control the spectral power distribution of the system light. Therefore, in embodiments, the light generation system may further include a control system configured to control one or more optical properties of the system light, said optical properties being selected from the group consisting of: (i) radiant flux, (ii) correlated color temperature, and (iii) the total radiant flux in the 385-440 nm wavelength range. For example, when there are people in the space, the radiant flux in the 385-440 nm wavelength range can be temporarily reduced.

[0026] Therefore, as can be derived from the above, in embodiments, the light generation system may include multiple light generation devices configured to provide system light. In embodiments, the light generation devices are configured to provide substantially the same spectral power distribution. However, in other embodiments, two or more light generation devices (subsets) may be configured to provide (substantially) different spectral power distributions. Therefore, in embodiments, the color points of the light from different light generation devices may be different.

[0027] In a particular embodiment, the colors or color points of the first type of light and the second type of light may be different when the corresponding color points of the first type of light and the second type of light differ by at least 0.01 with respect to u' and / or at least 0.01 with respect to v', more particularly by at least 0.02 with respect to u' and / or at least 0.02 with respect to v'. In a more specific embodiment, the corresponding color points of the first type of light and the second type of light may differ by at least 0.03 with respect to u' and / or at least 0.03 with respect to v'. Here, u' and v' are the color coordinates of the light in the CIE 1976 UCS (Uniform Chromaticity Scale) diagram. Spectral power distributions of different light sources with a centroid wavelength difference of at least 10 nm, such as at least 20 nm, or even at least 30 nm, can be considered different spectral power distributions, e.g., different colors. Typically, the difference in centroid wavelengths will not exceed about 400 nm, such as not exceeding 350 nm.

[0028] Therefore, the control system can be configured to control multiple light-generating devices.

[0029] In another aspect, the present invention provides a lighting device selected from the group consisting of lamps and illuminators, including light generating systems as defined herein. The illuminator may further include a housing, optical elements, blinds, etc. The lamp or illuminator may further include a housing surrounding the light generating system. The lamp or illuminator may include a light window or housing opening in the housing through which system light can escape from the housing. Therefore, in embodiments, the lamp or illuminator may include a light exit window comprising a (solid) light-transmitting material.

[0030] In another aspect, the invention also provides a system, or particularly an animal lighting system, configured to illuminate an animal space (in an agricultural environment), wherein the system may include (a) an animal space and (b) a light generating system (or a lighting device as defined herein) configured to illuminate the space.

[0031] The term "space" can refer to indoor space, such as in stables, barns, poultry houses, etc. Alternatively, the term "space" can refer to outdoor space, such as in fields, meadows, etc. In embodiments, outdoor space can be defined by boundaries, particularly where the boundaries include fences, such as fenced fields, and / or particularly where the boundaries include natural boundaries, such as rivers, canals, or ditches. In particular, the term "space" can refer to indoor space.

[0032] In one embodiment, the system can be configured to manage livestock.

[0033] Furthermore, in embodiments of the system, the space can be configured to accommodate multiple birds. Additionally, as described above, in embodiments, the light generation system can include multiple light generating devices for providing system light. Specifically, in embodiments, the multiple light generating devices can be spaced apart on an extension axis (A). Further, in embodiments, the system can include support lines configured to support and / or electrically connect the multiple light generating devices. For example, in embodiments, the support lines can be selected from (i) a feed supply line, (ii) an electric shock line, and (iii) a water supply line. Multiple birds can, for example, include a flock of birds.

[0034] As described above, a control system can be applied to control the light-generating system. The light-generating system can also be controlled based on sensor signals related to one or more of temperature, humidity, airflow, etc., and / or related to animal behavior or other aspects such as animal number, animal type, animal age, feeding time, etc. Therefore, in an embodiment, the system may further include sensors configured to sense one or more variable physical conditions of the space and animal behavior, and generate corresponding sensor signals, wherein the control system is configured to control the system light based on the sensor signals. Sensors may include cameras, temperature sensors, humidity sensors, etc.

[0035] In another aspect, the present invention provides a method for illuminating a bird space with system light, wherein the system light has a spectral power distribution with spectral intensity at multiple wavelengths in the wavelength range of 380-780 nm, wherein 15-40% of the total radiant flux of the system light is in the wavelength range of 385-440 nm relative to the total radiant flux of the system light in the wavelength range of 380-780 nm, and 60-85% of the total radiant flux is in the wavelength range of 440-780 nm, and wherein the system light has an R9 value of up to 85 and a color rendering index selected from the range of 55-85, wherein the method includes providing the system light to the space. Embodiments relating to a light generation system and the system can also be applied to this method.

[0036] 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 specifically refer to wavelengths selected from the 190–380 nm range (such as 200–380 nm). The terms “light” and “radiation” are used interchangeably herein unless the context clearly indicates that the term “light” refers only to visible light. Thus, the terms “light” and “radiation” may refer to UV radiation, visible light, and IR radiation. In certain embodiments, particularly for lighting applications, the terms “light” and “radiation” refer to (at least) visible light. The terms “violet light” or “violet emission” and similar terms may specifically refer to light with wavelengths in the range of about 380–440 nm. In certain embodiments, violet light may have a centroid wavelength in the range of 380–440 nm. The terms “blue light” or “blue emission” and similar terms may specifically refer to light with wavelengths in the range of about 440–490 nm (including some violet and cyan hues). In certain embodiments, blue light may have a centroid wavelength in the range of 440-490 nm. The terms "green light" or "green emission" and similar terms may particularly refer to light with wavelengths in the range of about 490-560 nm. In certain embodiments, green light may have a centroid wavelength in the range of 490-560 nm. The terms "yellow light" or "yellow emission" and similar terms may particularly refer to light with wavelengths in the range of about 560-590 nm. In certain embodiments, yellow light may have a centroid wavelength in the range of 560-590 nm. The terms "orange light" or "orange emission" and similar terms may particularly refer to light with wavelengths in the range of about 590-620 nm. In certain embodiments, orange light may have a centroid wavelength in the range of 590-620 nm. The terms "red light" or "red emission" and similar terms may particularly refer to light with wavelengths in the range of about 620-750 nm. In certain embodiments, red light may have a centroid wavelength in the range of 620-750 nm. The terms "cyan light" or "cyan emission" and similar terms particularly refer to light with wavelengths in the range of about 490-520 nm. In a particular embodiment, cyan light may have a centroid wavelength in the range of 490-520 nm. The terms "amber light" or "amber emission" and similar terms may particularly refer to light having wavelengths in the range of about 585-605 nm, for example, about 590-600 nm. In a particular embodiment, amber light may have a centroid wavelength in the range of 585-605 nm. The phrase "light having one or more wavelengths in the wavelength range" and similar phrases may particularly indicate that the indicated light (or radiation) has a spectral power distribution with one or more intensities at at least these one or more wavelengths in the indicated wavelength range. For example, a blue emitting solid-state light source would have a spectral power distribution with intensities at one or more wavelengths in the wavelength range of 440-490 nm.Here, UV (ultraviolet light) may specifically refer to wavelengths selected from the range of 190-380 nm, although other wavelengths may be possible in certain embodiments.

[0037] The term "control" and similar terms specifically refer to at least determining the behavior of an element or monitoring the operation of an element. Therefore, "control" and similar terms here can refer, for example, to applying behavior to an element (determining behavior or monitoring the operation of the element), such as measuring, displaying, actuating, opening, shifting, changing temperature, etc. In addition, the term "control" and similar terms can also include monitoring. Therefore, the term "control" and similar terms can include applying behavior to an element and applying behavior to an element and monitoring the element. Control of the element can be accomplished using a control system, which can also be referred to as a "controller". The control system and the element can therefore be functionally coupled, at least temporarily or permanently. The element can include a control system. In embodiments, the control system and the element may not be physically coupled. Control can be accomplished via wired and / or wireless control. The term "control system" can also refer to multiple different control systems, which are particularly functionally coupled, and where, for example, one control system can be a master control system, while one or more other control systems can be slave control systems. The control system can include or can be functionally coupled to a user interface.

[0038] 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, iPhone, or tablet. Therefore, the device is not necessarily coupled to the lighting system, but can be (temporarily) functionally coupled to it.

[0039] Therefore, in embodiments, the control system can (and may also) be configured to be controlled by an app on a remote device. In such embodiments, the control system of the lighting system can be a slave control system or controlled in slave mode. For example, the lighting system can be identified by a code, specifically a unique code for each lighting system. The control system of the lighting system can be configured to be controlled by an external control system that accesses the lighting system based on knowledge of the (unique) code (input via a user interface with optical sensors, such as a QR code reader). The lighting system may also include means for communicating with other systems or devices, such as based on Bluetooth, Thread, Wi-Fi, LiFi, ZigBee, BLE, or WiMAX, or other wireless technologies.

[0040] A system, apparatus, or device may perform actions in a “mode,” “operating mode,” “mode of operation,” or “running mode.” The term “operating mode” may also refer to “control mode.” Similarly, in a method, an action, stage, or step may be performed in a “mode,” “operating mode,” “mode of operation,” or “running mode.” This does not preclude the system, apparatus, or device from being adapted to provide another control mode, or multiple other control modes. Likewise, this does not preclude the possibility of performing one or more other modes before and / or after performing this mode.

[0041] In embodiments, the control system may be available and adapted to provide at least a control mode. If other modes are available, the selection of these modes may be performed, in particular, via a user interface, although other options, such as performing modes based on sensor signals or (time) schemes, are also possible. In embodiments, an operating mode may also refer to a system, device, or apparatus that can only operate in a single operating mode (i.e., "on," without additional tunability).

[0042] Therefore, in this embodiment, the control system can perform control based on one or more of the following: input signals from the user interface, sensor signals (from the sensors), and timers. The term "timer" can refer to a clock and / or a predetermined timing scheme.

[0043] The term "centroid wavelength," also referred to as λc, is known in the art and refers to a wavelength value in which half of the light energy is at a shorter wavelength and half at a longer wavelength; this value is expressed in nanometers (nm). This wavelength divides the integral of the spectral power distribution into two equal parts, as expressed by the formula λc = Σ λ*I(λ) / (Σ I(λ)), where the summation is over the wavelength of interest, and I(λ) is the spectral energy density (i.e., the integral of the product of wavelength and intensity in the emission band normalized to the integrated intensity). The centroid wavelength can be determined, for example, under operating conditions. Attached Figure Description

[0044] Embodiments of the invention will now be described by way of example only, with reference to the accompanying schematic diagrams, wherein corresponding reference numerals denote corresponding parts, and in the drawings: Figures 1a-1c schematically depict some aspects of the invention; and Figure 2 Some spectral power distributions are shown.

[0045] The diagram does not need to be drawn to scale. Detailed Implementation

[0046] Figure 1a schematically depicts an embodiment of a light generation system 1000 configured to generate system light 1001 having a spectral power distribution with spectral intensity at multiple wavelengths in the wavelength range of 380-780 nm (see also...). Figure 2 Specifically, relative to the total radiant flux of the system light 1001 in the 380-780 nm wavelength range, 15-40% of this total radiant flux is in the 385-440 nm wavelength range, and 60-85% of the total radiant flux is in the 440-780 nm wavelength range, wherein the system light 1001 has an R9 value of a maximum of 85 and a color rendering index selected from the range of 55-85 (see also...). Figure 2 ).

[0047] On the left and right, examples are shown where a light generation system 1000 includes a light generation device 100 comprising a light-emitting material 210. Therefore, the light generation system 1000 may include a first light-emitting material 210, wherein at least a portion of the radiant flux in the 385-440 nm wavelength range is provided by first light-emitting material light 211 of the first light-emitting material 210. In embodiments, the light generation system 1000 may include one or more of the following: (i) a blue solid-state light source as a pump source for the first light-emitting material 210, and (ii) a violet solid-state light source configured to provide at least a portion of the radiant flux in the 385-440 nm wavelength range.

[0048] The light generation system 1000 may also include a control system 300 configured to control one or more optical properties of the system light 1001, the optical properties being selected from the group consisting of (i) radiant flux, (ii) correlated color temperature, and (iii) total radiant flux in the wavelength range of 385–440 nm.

[0049] As schematically depicted in the middle and right, the light generation system 1000 may include a plurality of light generation devices 100 configured to provide system light 1001. In these embodiments, the light generation devices 100 are indicated by reference numerals 110, 120, 130, and 140, and their device lights 101 are indicated by reference numerals 111, 121, 131, and 141, respectively. On the right, a second light generation device 120 includes a first luminescent material 210. Therefore, the device light 121 may include luminescent material light 211. The control system 300 may be configured to control the plurality of light generation devices 100.

[0050] Figure 1b schematically depicts a lighting device 1200 selected from the group of lamps and illuminators including a light generating system 1000 as defined herein.

[0051] Figure 1c schematically depicts a system 2000 configured to illuminate an animal space 1300 (in an agricultural environment), wherein the system 2000 includes (a) the animal space 1300 and (b) a light generating system 1000 or lighting device 1200 as described herein, wherein the light generating system 1000 is configured to illuminate the space 1300. The space 1300 may be, for example, a shed. The animals may be, for example, poultry, such as chickens. In an embodiment, the space 1300 may (therefore) be configured to accommodate multiple birds. The light generating system 1000 may include a plurality of light generating devices 100 for providing system light 100. The plurality of light generating devices 100 may be spaced apart on an extension axis A. Furthermore, the system 2000 may include a support line 1400 configured to support and / or electrically connect the plurality of light generating devices 100. In an embodiment, the support line may be selected from (i) a feed supply line, (ii) an electric shock line, and (iii) a water supply line. System 2000 (or light generation system 1000) may further include sensor 310. Sensor 310 may be configured to sense one or more of variable physical conditions of the space and animal behavior and generate corresponding sensor signals, and wherein control system 300 may be configured to control system light 1001 depending on the sensor signals.

[0052] refer to Figure 2 The following spectral power distributions (10 examples here are indicated as AJ) from the following light-generating devices are depicted: .

[0053] The first few rows of each table provide contributions to the total radiative flux across the various wavelength ranges relative to the 385–780 nm wavelength range. This is followed by rows including CRI, R9, and CCT, and finally two rows with CIE x and y coordinates, respectively. These values ​​are essentially indistinguishable when using the 380–780 nm range.

[0054] Therefore, in the embodiment, the total radiant flux of system light 1001 in the 380-780 nm wavelength range is: (i) selected from 15-35% of the total radiant flux in the 380-440 nm wavelength range; (ii) selected from 5-25% of the total radiant flux in the 440-480 nm wavelength range; (iii) selected from 25-55% of the total radiant flux in the 480-580 nm wavelength range; and (iv) selected from 10-45% of the total radiant flux in the 580-780 nm wavelength range.

[0055] The term "a plurality of" refers to two or more. The terms "substantially" or "essentially," and similar terms, will be understood by those skilled in the art. The term "substantially" or "essentially" may also include embodiments having "completely," "entirely," "all," etc. Therefore, in embodiments, the adjective "substantially" or "essentially" may also be removed. Where applicable, the term "substantially" or "essentially" 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 items of item 1 and item 2. The term "comprising" in one embodiment may mean "consisting of," but in another embodiment may also mean "containing at least the defined kinds and optionally one or more other substances." 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 clearly requires otherwise, throughout the specification and claims, the words “comprising,” “including,” etc., should be interpreted in an inclusive sense, not 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 presence of a plurality of such elements.

[0056] 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 an order or chronological order. It should be understood that such terms are interchangeable where appropriate, and the embodiments of the invention described herein can operate in orders other than those described or shown herein.

[0057] These devices, apparatuses, or systems may be described herein during operation. Those skilled in the art will understand that the invention is not limited to the method of operation, or the devices, apparatuses, or systems in operation.

[0058] 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. Any reference numerals placed between parentheses in the claims should not be construed as limiting the claims.

[0059] This invention can be implemented by hardware comprising several different elements and by a suitably programmed computer. In the device claims, apparatus claims, or system claims that enumerate several means, several of these means can be implemented by the same hardware. The fact that certain measures are recited in mutually different dependent claims does not imply that combinations of these measures cannot be advantageously used. In another aspect, the invention (therefore) provides a software product that, when run on a computer, enables the implementation of one or more embodiments of the methods described herein.

[0060] The present invention also provides a control system that can control a device, apparatus, or system, or perform the methods or processes described herein. Furthermore, the present invention provides a computer program product that, when functionally coupled to or executed on a computer included in a device, apparatus, or system, controls one or more controllable elements of such device, apparatus, or system.

[0061] The present invention is also applicable to devices, apparatuses, or systems that include one or more features described in the specification and / or shown in the drawings. The present invention also relates to methods or processes that include one or more features described in the specification and / or shown in the drawings.

[0062] The various aspects discussed in this patent can be combined to provide additional advantages. Furthermore, those skilled in the art will understand that embodiments can be combined, and more than two embodiments can be combined. Additionally, some features can form the basis of one or more divisional applications.

Claims

1. A light generation system (1000) configured to generate system light (1001) having a spectral power distribution with spectral intensity at multiple wavelengths in the wavelength range of 380-780 nm, wherein the total radiative flux of the system light (1001) relative to the wavelength range of 380-780 nm is: - Selected from 15-35% of the total radiative flux in the 380-440 nm wavelength range; - Selected from 5-25% of the total radiative flux in the 440-480 nm wavelength range; - Selected from 25-55% of the total radiative flux within the wavelength range of 480-580 nm; and - Selected from 10-45% of the total radiative flux in the wavelength range of 580-780 nm; The spectral power distribution in the wavelength range of 385-440 nm includes the spectral maximum value in the wavelength range of 395-435 nm; and the system light (1001) has an R9 value of up to 85 and a color rendering index selected from the range of 55-85.

2. The light generation system (1000) according to claim 1, wherein the system light (1001) has a color rendering index selected from a range of up to 76 and an R9 value of up to 25.

3. The light generation system (1000) according to any one of the preceding claims, wherein, The spectral power distribution in the 385-440 nm wavelength range includes the spectral maximum value in the 400-425 nm wavelength range.

4. The light generation system (1000) according to any one of the preceding claims, comprising a first luminescent material (210), wherein at least a portion of the radiant flux in the wavelength range of 385-440 nm is provided by a first luminescent material light (211) of the first luminescent material (210); and wherein the light generation system (1000) comprises one or more of the following: (i) a blue solid-state light source as a pump light source for the first luminescent material (210), and (ii) a violet solid-state light source configured to provide at least a portion of the radiant flux in the wavelength range of 385-440 nm.

5. The light generating system (1000) according to any one of the preceding claims, wherein the light generating system (1000) is configured to generate system light (1001) having a spectral power distribution having spectral intensity in the wavelength ranges of violet, blue, green and yellow; wherein the correlated color temperature is selected from the range of 2000-13000 K.

6. The light generation system (1000) according to any one of the preceding claims, wherein, The maximum 2% of the total radiant flux of the system light (1001) in the 200-780 nm wavelength range is in the 200-380 nm wavelength range.

7. The light generation system (1000) according to any one of the preceding claims further includes a control system (300) configured to control one or more optical properties of the system light (1001), the one or more optical properties being selected from the group consisting of (i) radiant flux, (ii) correlated color temperature, and (iii) total radiant flux in the wavelength range of 385-440 nm.

8. The light generation system (1000) according to any one of the preceding claims, comprising a plurality of light generation devices (100) configured to provide light (1001) of the system.

9. The light generation system (1000) according to claim 8, wherein the plurality of light generation devices (100) have different spectral power distributions, and wherein the control system (300) is configured to control the spectral power distribution of the system light (1001).

10. A lighting device (1200) selected from the group consisting of a lamp (1) and a illuminator (2) comprising a light generating system (1000) according to any one of the preceding claims.

11. A system (2000) configured to illuminate a space (1300) of an animal, wherein the system (2000) comprises (a) the space (1300) of the animal and (b) a light generating system (1000) according to any one of claims 1-9 or a lighting device (1200) according to claim 10, wherein the light generating system (1000) is configured to illuminate the space (1300).

12. The system (2000) according to claim 11, wherein, The space (1300) is configured to accommodate multiple birds; wherein the light generating system (1000) includes a plurality of light generating devices (100) for providing light (100) to the system; wherein the plurality of light generating devices (100) are spaced apart on an elongation axis (A).

13. The system (2000) according to any one of claims 11-12 further includes a sensor (310), wherein the sensor (310) is configured to sense one or more of variable physical conditions of the space and animal behavior and generate a corresponding sensor signal, and wherein the control system (300) is configured to control the system light (1001) depending on the sensor signal.

14. The system (2000) of claim 13, wherein the sensor (310) comprises one or more of a camera, a temperature sensor, and a humidity sensor.

15. A method for illuminating a bird's space (1300) with a system light (1001), wherein the system light (1001) has a spectral power distribution with spectral intensity at multiple wavelengths in the wavelength range of 380-780 nm, wherein the total radiative flux of the system light (1001) relative to the wavelength range of 380-780 nm is: - Selected from 15-35% of the total radiative flux in the 380-440 nm wavelength range; - Selected from 5-25% of the total radiative flux in the 440-480 nm wavelength range; - Selected from 25-55% of the total radiative flux within the wavelength range of 480-580 nm; and - Selected from 10-45% of the total radiative flux within the wavelength range of 580-780 nm; The system light (1001) has an R9 value of up to 85 and a color rendering index selected from the range of 55-85, wherein the method includes providing such system light (1001) to such space (1300).

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