Abstract: In a system (1) comprising a radiation body (10), a radiation source (20) configured to emit radiation (21) at least comprising UV radiation, a detector (30) configured to detect an internal radiation intensity in the radiation body (10), and a controller arrangement (40), the controller arrangement (40) is configured to apply a safety algorithm after occurrence of a disturbance incident caused by an object (2) contacting a radiation exit window (11) of the radiation body (10). The safety algorithm involves setting an evaluation state of the radiation source (20) during evaluation periods separated by evaluation intervals while otherwise setting an adapted state of the radiation source (20), and determining a value of the internal radiation intensity during the evaluation periods in order to assess whether it is safe to restore the normal state of the radiation source (20).

Abstract: In a system (1) comprising a radiation body (10), a radiation arrangement (20), a detector arrangement (30) and a controller arrangement (40), the controller arrangement (40) is configured to put a UV radiation source (21) of the radiation arrangement (20) from a default state to a state of reduced radiation intensity when detection results demonstrate occurrence of a disturbance incident that is indicative of touch on a radiation exit window (11) of the radiation body (10). In particular, at least one radiation source (21) of the radiation arrangement (20) is configured to emit polarized radiation (22), and the detector arrangement (30) is configured to detect at least one of intensity of polarized radiation of the source polarization orientation and intensity of polarized radiation of orthogonal polarization orientation, wherein a change of the at least one of those intensities is taken as an indication of occurrence of a disturbance incident.

Abstract: A system (1) comprises a radiation body (10), a radiation arrangement (20) configured to provide radiation at least comprising UV radiation (23) to the radiation body (10), a detector arrangement (30) configured to detect an internal radiation intensity of radiation (25) in the radiation body (10) at at least one detector position, and a controller arrangement (40) configured to control the radiation arrangement (20) in dependence on input from the detector arrangement (30). When the input from the detector arrangement (30) indicates a change of the internal radiation intensity that can be assumed to follow from an event of touch on a radiation exit window (11) of the radiation body (10), an action of temporarily changing a state of at least one UV radiation source (21) of the radiation arrangement (20) from a maintenance state to a disinfecting state of increased intensity of the UV radiation (23) is performed.

Abstract: An anti-fouling unit (1) is configured to be arranged on a surface and comprises at least one electric circuit (30) including a light-emitting arrangement (31) configured to emit anti-fouling light. Further, the anti-fouling unit (1) comprises a carrier slab (40) carrying the at least one electric circuit (30), which carrier slab (40) includes at least one active slab zone (42) where the at least one electric circuit (30) is located and at least one passive slab zone (43) outside the active slab zone (42) that is configured to allow a division of the anti-fouling unit (1) in separate pieces without deteriorating the anti-fouling functionality, and the light-emitting arrangement (31) of the at least one electric circuit (30) is configured to realize the anti-fouling functionality both at a position of the at least one active slab zone (42) and at a position of the at least one passive slab zone (43).

Abstract: A water-soluble unit dose article containing an alkyl sulphate. A use thereof.

Abstract: The invention provides an anti-fouling lighting system configured for preventing or reducing biofouling on a fouling surface of an object, by providing an anti-fouling light via an optical medium to said fouling surface, the anti-fouling lighting system comprising: a lighting module comprising a light source configured to generate an anti-fouling light, and said optical medium configured to receive at least part of the anti-fouling light, the optical medium comprising an emission surface configured to provide at least part of said anti-fouling light ; and comprising silicone that includes particles of, for example, silica, glass, or mica, wherein a density of the particles in the silicone increases from within the optical medium towards the emission surface .

Abstract: A water-soluble unit dose article containing an alkyl sulphate. A use thereof.

Abstract: The invention provides an anti-biofouling system (200) comprising an UV-emitting element (210), wherein the UV-emitting element (210) comprises a UV radiation exit window (230), wherein the UV-emitting element (210) at least partly encloses a light source (220) configured to provide UV radiation (221), wherein the UV radiation exit window (230) is configured to transmit at least part of the UV radiation (221) of the light source (220), wherein the UV radiation exit window (230) comprises an upstream window side (231) and a downstream window side (232), wherein the UV-emitting element (210) also at least partly encloses an optical sensor (310) configured to sense radiation (421) emanating from the downstream window side (232) and configured to provide a corresponding optical sensor signal, wherein the anti-biofouling system (200) is further configured to provide said UV radiation (221) in dependence of said optical sensor signal.

Abstract: A light emitting device (1) is provided that can be used in various contexts, including the context of realizing an anti-fouling action on surfaces. The light emitting device (1) comprises light emitting units (10) being arranged in a plane filling pattern (20) for covering at least a substantial portion of a surface. Individual light emitting units (10) are electrically interconnected through connection areas (12, 13) as present on the light emitting units (10) for providing electrical access to an internal electrical circuit (11) thereof, wherein the light emitting units (10) overlap at the positions of at least portions of the connection areas (12, 13) thereof. Further, it may be so that at least one of the connection areas (12, 13) of the individual light emitting units (10) is electrically connected simultaneously to respective connection areas (12, 13) of at least two other light emitting units (10).

Abstract: A marine system (1) comprises a structure (10) that is designed for use in a marine environment, and that includes an exterior surface (11) that is at least intermittently exposed to water during actual use of the structure (10). The marine system (1) further comprises an anti-biofouling light arrangement (20) that is arranged and configured to emit anti-biofouling light towards the exterior surface (11) of the structure (10) in order to perform art anti-biofouling action on the exterior surface (11) of the structure (10), wherein the anti-biofouling light arrangement (20) includes a polarizing device (22) that is arranged in a path of the anti-biofouling light towards the exterior surface (11) of the structure (10) and configured to only let light waves of the anti-biofouling light of a specific polarization pass through.

Abstract: The invention provides a light guide element comprising a light guide and a layer element, wherein the light guide comprises a light guide face and wherein the layer element comprises an optical layer, wherein said optical layer is in contact with at least part of the light guide face, wherein the optical layer has a first index of refraction (n1) smaller than the refractive index of seawater, wherein the light guide comprises a UV radiation transmissive light guide material.

Abstract: A cooling apparatus (1) for cooling a fluid withsurface water, comprising at least one tube (8) for containing and transporting the fluid in its interior, the exterior of the tube (8) being in operation at least partially submerged in the surface water so as to cool the tube (8) to thereby also cool the fluid. The cooling apparatus (1) further comprises at least one light source (9) for producing light that hinders fouling on the submerged exterior, wherein the light source (9) is dimensioned and positioned with respect to the tube (8) so as to cast anti-fouling light over the tube's exterior. By this structure anti-fouling of the cooling apparatus (1) can be assured in an alternative and effective manner.

Abstract: A cooling apparatus for cooling a fluid by means of surface water, the cooling apparatus comprising more than one tubes for containing and transporting the fluid in its interior, the exterior of the tube being in operation at least partially submerged in the surface water so as to cool the tube to thereby also cool the fluid and hence different tube portions contain fluid at different temperatures. The cooling apparatus further comprises at least one light source for producing light that hinders fouling on the submerged exterior, wherein the at least one light source is arranged so that the intensity of the anti-fouling light, cast over the exterior of the tube portions whose exterior temperature or the temperature of the fluid they contain is below 80° C., is higher than the intensity of the anti-fouling light cast over the other tube portions. By this structure anti-fouling of the cooling apparatus can be assured in an effective manner.

Abstract: An assembly comprising at least two elements in a movable arrangement relative to each other for performing a first function of the assembly is furthermore equipped with an anti-biofouling system for subjecting at least an area of the assembly that is to be at least partially exposed to water during at least a part of its lifetime to an anti-biofouling action as an additional function of the assembly, different from the first function of the assembly. The anti-biofouling system comprises one or more light sources for emitting anti-biofouling light, and the anti-biofouling system is adapted to realize coverage of the area with the anti-biofouling light on the basis of the movable arrangement of the at least two elements relative to each other for performing the first function of the assembly.

Abstract: The invention provides an object (10) that during use is at least partly submerged in water, the object (10) further comprising an anti-bio fouling system (200) comprising an UV emitting element (210), wherein the UV emitting element (210) comprises one or more light sources (220) and is configured to irradiate with UV radiation (221) during an irradiation stage one or more of (i) a part (111) of an external surface (11) of said object (10) and (ii) water adjacent to said part (111) of said external surface (11), wherein the object (10) is selected from the group consisting of a vessel (1) and an infrastructural object (15), wherein the object (10) further comprises a water switch (400), wherein the anti-bio fouling system (200) is configured to provide said UV radiation (221) to said part (111) in dependence of the water switch (400) being in physical contact with the water.

Abstract: A method of anti-fouling of a surface while said surface is at least partially submersed in an liquid environment, comprising: providing an anti-fouling light; distributing at least part of the light through an optical medium comprising a silicone material and/or UV grade fused silica; emitting the anti-fouling light from the optical medium and from the surface.

Abstract: The invention provides a waveguide element (1000) comprising a first face (1001) and a second face (1002) with radiation transmissive material (1005) configured between the first face (1001) and the second face (1002), wherein the radiation transmissive material (1005) is transmissive for UV radiation, wherein the radiation transmissive material (1005) is a matrix material for a phase (1010) of another composition than the radiation transmissive material (1005), wherein the phase (1010) is available in the matrix as regions (1110) with the regions (1110) having mean particle radii (r1) selected from the range of 50-1500 nm and having an average region concentration selected from the range of 1*104-1.5*108/mm3 of the radiation transmissive material (1005).

Abstract: A light emitting arrangement (100) for anti-fouling of a surface (30), comprises an optical medium (10) and at least one light source (20) for emitting anti-fouling light. A first zone (1) of the arrangement (100), which is closest to the light source (20), is arranged and configured to predominantly make the anti-fouling light reflect in a specular manner towards an emission surface (12) of the optical medium (10), through the optical medium (10), a second zone (2) of the arrangement (100) is arranged and configured to predominantly realize propagation of the anti-fouling light through the optical medium (10) by total internal reflection, and a third zone (3) of the arrangement (100), which is furthest away from the light source (20), is arranged and configured to predominantly make the anti-fouling light scatter out of the optical medium (10), through the emission surface (12) of the optical medium (10).

Abstract: The invention provides an anti-fouling lighting system (1) configured for preventing or reducing biofouling on a fouling element (1201) of an object (1200). The fouling element (1201) is during use at least partly moving and at least temporarily exposed to water. Fouling is prevented by irradiating an anti-fouling light (211) onto said fouling element (1201). The anti-fouling lighting (1) system comprises at least one laser light source (2) configured to generate the anti-fouling light (211) and to provide said anti-fouling light (211) to said fouling element (1201) during use, wherein the system (1) is arranged such that during use the fouling element (1201) at least partly moves with respect to the laser light source (2).

Abstract: The present invention provides a marine cable device configured for preventing or reducing biofouling along its exterior surface, which during use is at least temporarily exposed to water. The marine cable device according to the present invention comprises at least one light source configured to generate an anti-fouling light and at least one optical medium configured to receive at least part of the anti-fouling light. The optical medium comprises at least one emission surface configured to provide at least part of said anti-fouling light on at least part of said exterior surface.