Abstract:
A light-emitting device is disclosed. The light-emitting device comprises a plurality of light-emitting elements or light sources and a flexible pad for position and conforming the light-emitting device to a portion of the body, wherein the flexible pad further comprises a three-dimensional structure having a plurality of protrusions for contacting the skin when the light-emitting device is applied to the skin, a plurality of recesses for creating a clearance between the skin and the flexible pad when the light- emitting device is applied to the skin, and a plurality of apertures for engaging with the plurality of light-emitting elements.
Abstract:
A relative flux sensor (122) and a method of characterizing characteristics of light emitters are provided. The relative flux sensor (122) comprises a color point sensor(108) and a sensor color (118). The color point sensor (108) measures a color point in a color space of light emitted by a light source (101) comprising a first light emitter (102) for emitting light of a first color and a second light emitter (114) for emitting light of a second color being different from the first color. The light source (101) is arranged for emitting light of a controllable color,being a mix of light of the first color and light of the second color. The sensor controller (118) is coupled to the color point sensor (108) for receiving a measuring signal and is arranged for i)providing a first signal to the light source (101), the first signal comprising a dimming factor D1 and a dimming factor D2, the dimming factor D1 and the dimming factor D2 indicating a fraction of a maximum flux of the first light emitter(102) and the second light emitter (114), respectively, and receiving the measuring signal representing a first color point when the light source (101) emits light according to the first signal, wherein at least one of the dimming factors D1 and D2 is different from 0, ii) providing a second signal to the light source (101), the second signal comprising a dimming factor D4 and a dimming factor D5, the dimming factor D4 and the dimming factor D indicating a fraction of the maximum flux of the first light emitter (102) and the second light emitter (114), respectively, and receiving the measuring signal representing a second color point when the light source (101) emits light according to the second signal, wherein both dimming factors D4 and D5 are different from 0, iii) calculating within a model of the color 20 space a ratio between a maximum flux of the first light emitter (102) and a maximum flux of the second light emitter (114) on the basis of the first color point, the second color point, the dimming factors D1, D2, D4 and D5.
Abstract:
The invention relates to a backlight system (Bl - BlO) for illuminating a display device, comprising a light emission window (EW) for emitting light in the direction of a display device (Di), and an electrically conductive plate (Bs), at least a part of which plate is arranged opposite to the light emission window, and at least one fluorescent lamp (TL) arranged between said light emission window and said electrically conductive plate, said at least one fluorescent lamp having a first end section (Sl), a middle section (S2), and a second end section (S3). The electrically conductive plate (Bs) has a construction such that, during operation of the backlight system, the degree of electrical coupling between the middle section of the at least one fluorescent lamp and a section of the electrically conductive plate associated with said middle section is higher than the degree of electrical coupling between the first end section and/or the second end section of the at least one fluorescent lamp and sections or a section of the electrically conductive plate associated with said first end section and/or said second end section, respectively. As a result, the ignition behavior of the lamp is improved. Furthermore, the light output of the lamp can be locally controlled.
Abstract:
A relative flux sensor (122) and a method of characterizing characteristics of light emitters are provided. The relative flux sensor (122) comprises a color point sensor(108) and a sensor color (118). The color point sensor (108) measures a color point in a color space of light emitted by a light source (101) comprising a first light emitter (102) for emitting light of a first color and a second light emitter (114) for emitting light of a second color being different from the first color. The light source (101) is arranged for emitting light of a controllable color,being a mix of light of the first color and light of the second color. The sensor controller (118) is coupled to the color point sensor (108) for receiving a measuring signal and is arranged for i)providing a first signal to the light source (101), the first signal comprising a dimming factor D1 and a dimming factor D2, the dimming factor D1 and the dimming factor D2 indicating a fraction of a maximum flux of the first light emitter(102) and the second light emitter (114), respectively, and receiving the measuring signal representing a first color point when the light source (101) emits light according to the first signal, wherein at least one of the dimming factors D1 and D2 is different from 0, ii) providing a second signal to the light source (101), the second signal comprising a dimming factor D4 and a dimming factor D5, the dimming factor D4 and the dimming factor D indicating a fraction of the maximum flux of the first light emitter (102) and the second light emitter (114), respectively, and receiving the measuring signal representing a second color point when the light source (101) emits light according to the second signal, wherein both dimming factors D4 and D5 are different from 0, iii) calculating within a model of the color 20 space a ratio between a maximum flux of the first light emitter (102) and a maximum flux of the second light emitter (114) on the basis of the first color point, the second color point, the dimming factors D1, D2, D4 and D5.
Abstract:
A metal halide lamp comprising a substantially cylindrical discharge vessel (3) having an internal diameter Di and filled with an ionizable filling, wherein two electrodes (4, 5) are present at a mutual distance EA for maintaining a discharge in the discharge vessel (3), wherein EA/Di>4, and wherein the ionizable filling contains PrI3.
Abstract:
A radiation guide system is described for guiding radiation. The radiation guide system(10) comprises a plurality of distinct radiation guide segments (13). These are arranged for receiving radiation and for coupling out at least part of the radiation through a surface of the radiation guide segments. The radiation guide segments (13) are connected to each other so as to be moveable with respect to each other and so as to construct a single radiation guide system.
Abstract:
A flexible light therapy device, a bandage and a plaster for providing a therapeutic effect to a treatment target area (226) of a living being are provided. The flexible light therapy device comprises a light source (214) for emitting light (220), a light transmitting element (212) and a heat management means (210). The light transmitting element (212) is of a flexible light transmitting material and is optically coupled to the light source (214). The light transmitting element (212) comprises a light exit window (222) to emit the light (220) towards the treatment target area (226). The heat management means (210) is thermally coupled to the treatment target area (226) and distributes heat and controls the distribution of heat across the treatment target area (226). Part of the distributed heat may originate from the light source (214).
Abstract:
The invention relates to a discharge lamp, in particular a fluorescent lamp (4a-4d) comprising an at least partially light-transmissive discharge vessel (6, 9, 14, 16) filled with an ionizable substance, multiple electrodes connected to said vessel (6, 9, 14, 16), between which electrodes a discharge extends during lamp operation characterized by the vessel (6, 9, 14, 16). Seeing at least partially covered with at least one heat-reflective layer (8, 10, 11, 13, 19) for reflecting heat generated by the discharge lamp (4a-4d). The invention also relates to an illumination system for illumination display devices, comprising a plurality of such discharge lamps (4a-4d). The invention further relates to a display device comprising such an illumination system (1).
Abstract:
A light emitting device for application near mammal tissue is disclosed. The device includes at least one light source for emitting light towards a light emitting surface and at least one tissue sensor for detecting the presence of mammal tissue facing said light emitting surface. The device further includes a controller for controlling the at least one light source as a function of a value received from the at least one tissue sensor, wherein the at least one tissue sensor is a temperature sensor.
Abstract:
A radiation guide system is described for guiding radiation. The radiation guide system(10) comprises a plurality of distinct radiation guide segments (13). These are arranged for receiving radiation and for coupling out at least part of the radiation through a surface of the radiation guide segments. The radiation guide segments (13) are connected to each other so as to be moveable with respect to each other and so as to construct a single radiation guide system.