Abstract: A method (300) for determining temperature in a region (220/230) of an environment (200) by compensating for heat-up of a temperature sensor caused by ambient air and/or electronic heating, using a system (100) comprising: (i) a structure (110); (ii) a controller (130); and (iii) a temperature sensor (120), the method comprising: obtaining (320) first temperature measurements while the structure is in a first operating mode; changing (330) the first operating mode of the structure to a second operating mode; obtaining (340) second temperature measurements while the structure is in the second operating mode; determining (350) a temperature correction comprising an effect of the second operating mode on the temperature sensor; obtaining (360) a new temperature measurement during operation of the structure in the second operating mode; and adjusting (370), using the temperature correction, the new temperature measurement to generate a compensated temperature measurement.

Abstract: Various improvements are provided to breathing training, monitoring and/or assistance devices. A portable device is provided which optionally includes a gas canister, a feedback system for implementing pressure control, and a visual output for indicating adherence to a breathing exercise to the user. The pressure control may provide regulation of different pressures for inhalation and exhalation.

Abstract: A method (300) for determining temperature in a region (220/230) of an environment (200) by compensating for heat-up of a temperature sensor caused by ambient air and/or electronic heating, using a system (100) comprising: (i) a structure (110); (ii) a controller (130); and (iii) a temperature sensor (120), the method comprising: obtaining (320) first temperature measurements while the structure is in a first operating mode; changing (330) the first operating mode of the structure to a second operating mode; obtaining (340) second temperature measurements while the structure is in the second operating mode; determining (350) a temperature correction comprising an effect of the second operating mode on the temperature sensor; obtaining (360) a new temperature measurement during operation of the structure in the second operating mode; and adjusting (370), using the temperature correction, the new temperature measurement to generate a compensated temperature measurement.

Abstract: The invention provides a lighting device (1) comprising: —one or more light sources (10) configured to provide light source light (11); —a luminescent element (5) comprising an elongated light transmissive body (100); the elongated light transmissive body (100) comprising a luminescent material (120) configured to convert at least part of light source light (11) received at one or more radiation input faces (111) into luminescent material light (8), and the luminescent element (5) configured to couple at least part of the luminescent material light (8) out at the first radiation exit window (112) as converter light (101); wherein the light transmissive body (100) has a first index of refraction n1; —a beam shaping optical element (224) optically coupled with the first radiation exit window (112), the beam shaping optical element comprising a radiation entrance window (211) configured to receive at least part of the converter light (101); wherein the beam shaping optical element (224) has a second index of ref

Abstract: Various improvements are provided to breathing training, monitoring and/or assistance devices. A portable device is provided which optionally includes a gas canister, a feedback system for implementing pressure control, and a visual output for indicating adherence to a breathing exercise to the user. The pressure control may provide regulation of different pressures for inhalation and exhalation.

Abstract: The invention provides a lighting device (1) comprising: —one or more light sources (10) configured to provide light source light (11); —a luminescent element (5) comprising an elongated light transmissive body (100); the elongated light transmissive body (100) comprising a luminescent material (120) configured to convert at least part of light source light (11) received at one or more radiation input faces (111) into luminescent material light (8), and the luminescent element (5) configured to couple at least part of the luminescent material light (8) out at the first radiation exit window (112) as converter light (101); wherein the light transmissive body (100) has a first index of refraction n1; —a beam shaping optical element (224) optically coupled with the first radiation exit window (112), the beam shaping optical element comprising a radiation entrance window (211) configured to receive at least part of the converter light (101); wherein the beam shaping optical element (224) has a second index of ref

Abstract: A light emitting device (1) comprising a first light source (21) and a second light source (22), a luminescent element (4) comprising a first light input surface (41), a second light input surface (42), a light exit surface (43), a first further surface (44) and a second further surface (45), a first cooling assembly (5) and a second cooling assembly (6), the first cooling assembly (5) comprising a first cooling element (52) and a first light source board (51) on which one of the light sources is mounted, and the second cooling assembly (6) comprising a second cooling element (62) and a second light source board (61), on which the other one of the light sources is mounted, and the second cooling assembly (6) being arranged with a surface (621) in mechanical and thermal contact with the first further surface (44) of the luminescent element thereby forming a first interface and the first cooling assembly (5) being arranged with a surface (521) in mechanical and thermal contact with the second further surface (4

Abstract: Various improvements are provided to breathing training, monitoring and/or assistance devices. A portable device is provided which optionally includes a gas canister, a feedback system for implementing pressure control, and a visual output for indicating adherence to a breathing exercise to the user. The pressure control may provide regulation of different pressures for inhalation and exhalation.

Abstract: Various improvements are provided to breathing training, monitoring and/or assistance devices. A portable device is provided which optionally includes a gas canister, a feedback system for implementing pressure control, and a visual output for indicating adherence to a breathing exercise to the user. The pressure control may provide regulation of different pressures for inhalation and exhalation.

Abstract: A light emitting device (1) comprising a first light source (21) and a second light source (22), a luminescent element (4) comprising a first light input surface (41), a second light input surface (42), a light exit surface (43), a first further surface (44) and a second further surface (45), a first cooling assembly (5) and a second cooling assembly (6), the first cooling assembly (5) comprising a first cooling element (52) and a first light source board (51) on which one of the light sources is mounted, and the second cooling assembly (6) comprising a second cooling element (62) and a second light source board (61), on which the other one of the light sources is mounted, and the second cooling assembly (6) being arranged with a surface (621) in mechanical and thermal contact with the first further surface (44) of the luminescent element thereby forming a first interface and the first cooling assembly (5) being arranged with a surface (521) in mechanical and thermal contact with the second further surface (4

Abstract: An SSL lighting device (1) comprising a housing (2), which has a reflective inner surface (3), and an elongated light guide (6) which includes a wavelength converting material (10) for converting light in a first wavelength range to light in a second wavelength range. The elongated light guide (6) comprises two ends (7a, 7b), a portion for receiving light (18) and a portion for emitting light (19). The portion for receiving light (18) is arranged inside the housing (2) and the portion for emitting light (19) is arranged outside the housing (2) and at least one of the two ends (7a, 7b) forms the portion (19) for emitting light. The SSL lighting device (1) also comprises a plurality of SSL light sources (4) arranged inside the housing (2) at a distance from the elongated light guide (6).

Abstract: A synthetic jet cooling device (1) for cooling an object (5), comprising: a transducer (10) adapted to generate velocity waves, and an enclosure (4) arranged to receive the velocity waves via an actuated aperture (8). The enclosure (4) is sufficiently large to generate, at the actuated aperture (8), an internal synthetic jet inside the enclosure (4). Furthermore, the enclosure (4) is arranged to contain the object (5), thereby enabling cooling of the object (5) by the internal synthetic jet. The arrangement typically permits multifunctional use of an existing enclosure, containing the object to be cooled, both for its original purpose (e.g. a reflector in a lamp, or a LED backlight module) and as an enclosure generating internal synthetic jets, why the cooling device typically requires virtually no extra space and weight, and can be provided at a low cost.

Abstract: The present invention relates to a method of preparing an at least partially transparent and conductive layer (22) comprising graphene, the method comprising the steps of: (a) applying a dispersion comprising graphene oxide onto a substrate to form a layer comprising graphene oxide on the substrate, and (b) heating at least part of the layer obtained in step (a) by laser irradiation (34) at a laser output power of at least 0.036 W, thereby chemically reducing at least a part of the graphene oxide to graphene (33) and physically reducing the thickness of the layer by ablation. An advantage of the present invention is that it provides a simplified method of preparing a layer comprising graphene. The layer thus prepared has desirable transparency and conductivity.

Abstract: A light source (104) arranged on a substrate (100) and having a light exit surface, a wavelength converter (106) configured to convert light from a first wavelength to a second wavelength, the wavelength converter (106) having a light exit surface (110) and a light entrance surface (114) and an optical coupling element (112), arranged between and in contact with the light exit surface of the light source (104) and the light entrance surface (114) of the wavelength converter (106), and configured to couple light from the light source (104) to the wavelength converter (106), wherein at least a major portion of the surface of the wavelength converter (106), other than the light exit surface (110) and the light entrance surface (114), has a surface roughness, RA, less than 100 nm.

Abstract: An SSL lighting device (1) comprising a housing (2), which has a reflective inner surface (3), and an elongated light guide (6) which includes a wavelength converting material (10) for converting light in a first wavelength range to light in a second wavelength range. The elongated light guide (6) comprises two ends (7a, 7b), a portion for receiving light (18) and a portion for emitting light (19). The portion for receiving light (18) is arranged inside the housing (2) and the portion for emitting light (19) is arranged outside the housing (2) and at least one of the two ends (7a, 7b) forms the portion (19) for emitting light. The SSL lighting device (1) also comprises a plurality of SSL light sources (4) arranged inside the housing (2) at a distance from the elongated light guide (6).

Abstract: A device (230, 1330, 1430) includes: a first electrode (232); an electro-statically movable second electrode (234, 1734, 1834); and an electrically insulating layer (233) disposed between the first and second electrodes. The electro-statically movable second electrode is configured to have a first geometric configuration in response to a first electrical potential between the first and second electrodes, and is further configured to have a second geometric configuration in response to a second electrical potential between the first and second electrodes. The device is configured to receive a time-varying voltage and in response thereto the electrostatically movable second electrode is configured to repeatedly transition between the first geometric configuration and the second geometric configuration to influence a flow of a fluid (235) for cooling at least one heat-generating element (310).

Abstract: An optical arrangement comprising a light guide (101) having a light-entry portion (103) with a light-entry surface (105), a tapering portion (107) with a light reflecting surface, and a light-exit surface (109). The light-entry portion (103) is arranged to guide light from the light-entry surface (105) in a first direction (x) towards the light reflecting surface (H I), the light reflecting surface being arranged in relation to the first direction (x) so that incident light from the light-entry portion (103) is reflected towards the light-exit surface (109). A light transmitting layer (113) is adapted to transmit light diffusively and arranged to cover at least a portion of the light-entry edge surface (105) of the light guide (101). The arrangement is e.g. suitable for use in a LED based luminaire and allows for efficiency and forming of a light beam able to fulfill glare requirements. The arrangement may advantageously be used in a downlighting application.

Abstract: A device (230, 1330, 1430) includes: a first electrode (232); an electro-statically movable second electrode (234, 1734, 1834); and an electrically insulating layer (233) disposed between the first and second electrodes. The electro-statically movable second electrode is configured to have a first geometric configuration in response to a first electrical potential between the first and second electrodes, and is further configured to have a second geometric configuration in response to a second electrical potential between the first and second electrodes. The device is configured to receive a time-varying voltage and in response thereto the electrostatically movable second electrode is configured to repeatedly transition between the first geometric configuration and the second geometric configuration to influence a flow of a fluid (235) for cooling at least one heat-generating element (310).

Abstract: An imprint lithography method is provided. The method includes undertaking first and second imprints, which comprises for each imprint: for an area of a substrate provided with a plurality of drops of imprintable medium in respectively first and second configurations, imprinting a pattern in the imprintable medium using a same imprint template, pockets being formed between the drops of the imprintable medium, the imprint template and the substrate during the imprinting of the pattern, wherein the first configuration of drops of imprintable medium is different from the second configuration of drops of imprintable medium, such that pockets formed during the second imprint are formed at different locations relative to the imprint template to pockets formed during the first imprint.

Abstract: A cooling arrangement for cooling a heat generating electrical component is disclosed, which arrangement comprises a heat spreading element (2) having a mounting surface (3) adapted to be thermally connected to the heat generating electrical component (1), and a heat rejection surface (4). The arrangement further comprises an enclosure (5) arranged to cover the heat rejection surface (4) and form an essentially closed compartment; an opening (13) leading into the compartment; an annular member (11) coaxially aligned with the opening; and an actuator connected to the annular member (11), and arranged to move the annular member (11) reciprocating away from/toward the opening (13). The annular member (11) hence generates a jet directed through the opening (13) toward the outside of the enclosure (5).