Abstract: The invention provides a lighting system comprising (i) a lighting device comprising a plurality of light sources for application in a horticulture production facility, wherein the light sources are configured to illuminate with horticulture light crops, wherein the lighting system further comprises (ii) a control unit configured to control the light intensity of local light at a location, wherein the local light is the sum of the horticulture light and light at the location originating from an optional other light source, and wherein the control unit is configured to prevent a change in the photosynthetic photon flux density (PPFD) of the local light at the location of on average more than 50 nmol/sec/m2 over a predetermined period of time selected from the range of equal to or smaller than 5 minutes by controlling the contribution of the horticulture light to the local light.

Abstract: The present invention generally relates to systems and methods of illuminating plants, in particular, to providing supplemental lighting in addition to natural light to plants, and improving the crop yield when using such supplemental lighting. The invention is well suited for use in horticulture, for instance, in greenhouses.

Abstract: The invention provides a lighting system comprising (i) a lighting device comprising a plurality of light sources for application in a horticulture production facility, wherein the light sources are configured to illuminate with horticulture light crops, wherein the lighting system further comprises (ii) a control unit configured to control the light intensity of local light at a location, wherein the local light is the sum of the horticulture light and light at the location originating from an optional other light source, and wherein the control unit is configured to prevent a change in the photosynthetic photon flux density (PPFD) of the local light at the location of on average more than 50 ?mol/sec/m2 over a predetermined period of time selected from the range of equal to or smaller than 5 minutes by controlling the contribution of the horticulture light to the local light.

Abstract: A horticultural lighting apparatus for illuminating a plant comprises a lighting module with multiple lighting elements. The lighting module is restricted to operating in a plurality of discrete modes which emit light with different discrete spectral compositions, by emitting light from the lighting elements in different predetermined combinations. These modes comprise a growth mode configured with a spectrum that promotes growth of the plant, and at least one steering mode configured with a spectrum that steers another biological process of the plant, wherein at least one of the lighting elements is arranged to emit in both the growth and steering modes. The apparatus further comprises a controller arranged to switch the lighting module between the plurality of discrete modes.

Abstract: The invention provides a lighting system comprising (i) a lighting device comprising a plurality of light sources for application in a horticulture production facility, wherein the light sources are configured to illuminate with horticulture light crops, wherein the lighting system further comprises (ii) a control unit configured to control the light intensity of local light at a location, wherein the local light is the sum of the horticulture light and light at the location originating from an optional other light source, and wherein the control unit is configured to prevent a change in the photosynthetic photon flux density (PPFD) of the local light at the location of on average more than 50 ?mol/sec/m2 over a predetermined period of time selected from the range of equal to or smaller than 5 minutes by controlling the contribution of the horticulture light to the local light.

Abstract: The present application relates to a method of controlling an artificial light plant growing system (1). The method includes receiving information indicative of a production demand for a plant type to be grown in the artificial light plant growing system (1) and information indicative of an energy supply for a light source (9) of the artificial light plant growing system (1), and controlling operation of the light source (9) of a plant growing environment of the artificial light plant growing system (1) in dependence on the received information so that the production rate of a plant (8) of said plant type grown in the system (1) versus the production demand and energy supply is optimised. The present application also relates to a computer program comprising instructions which, when executed by at least one processor, cause the method of to be performed, a controller (5) for controlling an artificial light plant growing system (1), and an artificial light plant growing system (1).

Abstract: The invention provides a method for enhancing the nutritional value in a first plant part (2) of a crop (1), wherein the first plant part (2) comprises an edible plant part, wherein the crop (1) in addition to the first plant part (2) comprises one or more other plant parts (3), wherein the method comprises illuminating during a nutritional enhancement lighting period a target part (5) of said first plant part (2) with horticulture light (511) that is selected to enhance formation of a nutrient in said first plant part (2) while allowing one or more other plant parts (3) to be subjected to different light conditions, wherein the nutritional enhancement lighting period is started within two weeks from harvest of the first plant part (2).

Abstract: The invention provides a method for providing horticulture light (511) to a crop (1), the method comprising sideways illuminating the crop (1) with the horticulture light (511) of a lighting device (500), the lighting device (500) comprising a grid (530) comprising a plurality of light emitting diodes (LEDs) (510) and a plurality of through holes (570), wherein one or more of the plurality of LEDs (510) are configured to provide said horticulture light (511).

Abstract: The present invention generally relates to systems and methods of illuminating plants, in particular, to providing supplemental lighting in addition to natural light to plants, and improving the crop yield when using such supplemental lighting. The invention is well suited for use in horticulture, for instance, in greenhouses.

Abstract: An optical element for use in front of a light source for obtaining a skylight appearance, and a luminaire are provided. The optical element comprising a plurality of light transmitting cells in a raster structure, a diffuser and an edge wall. A light source emits light towards the raster structure. The raster structure collimates a part of the light and transmits a further part of the light in a predetermined spectral range. White light and colored light that is transmitted by the raster structure may impinge upon the side wall of the optical element. One face of the side wall is a region of specular reflectivity and will reflect the light that impinges upon it back into the chamber that is formed by the cooperation of the raster structure, the diffuser and the edge wall. Light exits the optical element through the diffuser.

Abstract: A lighting element 100, a lighting system and a luminaire are provided. The lighting element 100 is used for obtaining a skylight appearance and has a white light emitting means 104 for emitting white light, a blue light emitting means 106 for emitting blue light and a Fresnel lens 102. The Fresnel lens 102 is arranged to receive light from the white light emitting means 104 and from the blue light emitting means 106. The white light emitting means 104 is arranged in a first relative position with respect to the Fresnel lens 102 to collimate at least a part of the light emitted by the white light emitting means 104 to obtain a collimated directed light beam in a specific direction. The blue light emitting means 106 is arranged in a second relative position with respect to the Fresnel lens 102 to obtain a blue light emission at least outside the collimated directed light beam.

Abstract: A horticultural lighting apparatus for illuminating a plant comprises a lighting module with multiple lighting elements. The lighting module is restricted to operating in a plurality of discrete modes which emit light with different discrete spectral compositions, by emitting light from the lighting elements in different predetermined combinations. These modes comprise a growth mode configured with a spectrum that promotes growth of the plant, and at least one steering mode configured with a spectrum that steers another biological process of the plant, wherein at least one of the lighting elements is arranged to emit in both the growth and steering modes. The apparatus further comprises a controller arranged to switch the lighting module between the plurality of discrete modes.

Abstract: The present application relates to a method of controlling an artificial light plant growing system (1). The method includes receiving information indicative of a production demand for a plant type to be grown in the artificial light plant growing system (1) and information indicative of an energy supply for a light source (9) of the artificial light plant growing system (1), and controlling operation of the light source (9) of a plant growing environment of the artificial light plant growing system (1) in dependence on the received information so that the production rate of a plant (8) of said plant type grown in the system (1) versus the production demand and energy supply is optimised. The present application also relates to a computer program comprising instructions which, when executed by at least one processor, cause the method of to be performed, a controller (5) for controlling an artificial light plant growing system (1), and an artificial light plant growing system (1).

Abstract: The present disclosure relates to a backlight for illuminating back lit displays (e.g. LC displays of LCD televisions). In order to enable a thin design of the backlight and a high uniformity of the light emitted by the backlight, an apparatus may be provided with transparent and diffusing masking elements that may mask individual light sources and may diffuse light back into a light guide. Absorbing elements and/or retro-reflective elements may be arranged proximate the light sources in order to avoid generation of bright spots or rings around the light sources.

Abstract: An optical element, a lighting system and a luminaire is provided. The optical element comprises a plate 100 and a plurality of collimating means. The optical element is to be used in front of a light source comprising a light emitting surface 106, and the optical element is configured to obtain a skylight appearance. The plate 100 is to be arranged parallel to the light emitting surface 106. The plate 100 is opaque and comprises a plurality of holes 104. The plate 100 further comprises a reflective surface 102 which is to be arranged parallel to the light emitting surface 106. The reflective surface 102 is light reflective in a predetermined spectral range to obtain a blue light emission 100. The plurality of collimating means collimate a part of the light received from the light source to obtain a collimated light beam 112 in a specific direction. Each one of the collimating means comprises one of the plurality of holes of the plate 104.

Abstract: The present invention relates to alight-emitting panel (1) comprising: a first panel sheet (11), the first panel sheet being optically transparent; a second panel sheet (12); and a cellular support panel (10) sandwiched between the first panel sheet and the second panel sheet. The cellular support panel comprises optically transparent cell walls (13) defining a plurality of tubular channels (14) extending from the first panel sheet towards the second panel sheet. The light-emitting panel (1) further comprises a two-dimensional light-source array (15;16;24;27) comprising a plurality of light-sources (18a-b;19a-b) each being arranged to emit light into at least one of the tubular channels of the cellular support panel. Various embodiments of the present invention provide a cost-efficient light-emitting panel with advantageous light-emission and mechanical properties.

Abstract: The invention provides an interface (20) for converting a desired physiological plant response into control instructions for at least one lighting system (4,5) which has an adjustable lighting property, said interface (20) comprising: a receiver for receiving a desired physiological plant response; a processor functionally coupled to said receiver for converting said desired physiological plant response into said control instructions, and a transmitter (7), functionally coupled to said processor for transmitting said control instructions to said at least one lighting system (4,5) wherein said desired physiological plant response is defined as a set point in a multi-dimensional horticulture action space.

Abstract: An optical element for use in front of a light source 102 for obtaining a skylight appearance, and a luminaire are provided. The optical element comprising a plurality of light transmitting cells in a raster structure 140, a diffuser 145 and an edge wall 130. A light source 102 emits light towards the raster structure 140. The raster structure 140 collimates a part of the light and transmits a further part of the light in a predetermined spectral range. White light 114 and colored light 112 that is transmitted by the raster structure 140 may impinge upon the side wall 130 of the optical element. One face of the side wall 130 is a region of specular reflectivity 135 and will reflect the light that impinges upon it back into the chamber 125 that is formed by the cooperation of the raster structure 140, the diffuser 145 and the edge wall 130. Light exits the optical element through the diffuser 145.

Abstract: A lighting system and method for the growing of a plant seedling is disclosed, including at least one light source (30) for illuminating the plant seedling (39) with grow light during growth stages of the plant seedling growth process, and a controller for the controlling the spectral power distribution of the grow light emitted from the light source (30) such that the grow light in at least some growth stages of the plant seedling growth process comprises more energy in the blue wavelength range than in other growth stages of the plant seedling growth process. In use cases where the grow light is supplementing available daylight, an additional sensor (33) may be used to measure the amount and spectral composition of daylight and control the grow light such that spectral power distribution of total light received by the plant seedling is controlled accordingly.

Abstract: There is provided a lighting device (100) comprising at least one light source for providing light, a envelope encompassing said light source, a base to which said envelope is engaged, and a control means for adjusting the lighting settings of said lighting device. The control means are arranged for detecting a position in relation to the base of a point of reference being movably arranged on the lighting device. The lighting settings are adjusted in response to the detected position.