摘要:
A light output device and manufacturing method in which an array of LEDs (34) is embedded in an encapsulation layer (32). An array of cavities (30) (or regions of different refractive index) is formed in the encapsulation layer (32). The cavities/regions (30) have a density or size that is dependent on their proximity to the light emitting diode (34) locations, in order to reduce hot spots (local high light intensity areas) and thereby render the light output more uniform over the area of the device.
摘要:
It is disclosed an optical element (200) wherein one or more light-emitting diodes, LEDs, and additional optics may be provided in an integrated solution that may relatively easily be assembled and maintained in a desired position relatively each other. The optical element (200) may enable one or more LEDs and additional optics to be provided in an integrated solution that is relatively thin and compact in comparison with known devices, such that light from one or more LEDs may be injected into a thin light guide (205, 206) such as an optical fiber, an optical fiber array, a ribbon-shaped light-guiding structure, etc.
摘要:
A LED circuit comprises an array of LEDs is arranged in a matrix. The matrix is connected to at least three power rail lines. The LEDs are formed as a first LED arrangement (34) between a first power rail line (30) and a second power rail line (32) and a second LED arrangement (36) between the second power rail line (32) and a third power rail line (30) of the same voltage as the first power rail line. This means there are alternating power rail lines interspersed with the matrix of LEDs. This enables the driving voltages to be kept low and it improves scalability of the design.
摘要:
A light-emitting electronic textile (1;35) comprising: a flexible component carrier (2) having a plurality of light sources (3) arranged thereon; and at least one textile light-diffusing member (4) arranged to diffuse light emitted by the light sources (3). The textile light-diffusing member (4) comprises: a first textile layer (10) comprising fibers (14); a second textile layer (11) comprising fibers (15); and a spacing layer (12) arranged between the first textile layer (10) and the second textile layer (11), wherein the spacing layer (12) comprises spacing fibers (16) that space apart the first and second textile layers, the spacing fibers (16) being attached to fibers (14,15) comprised in each of the first and second textile layers to thereby mechanically connect the first (10) and second (11) textile layers with each other.
摘要:
A lighting system comprises a circuit board (30) which carries a lighting circuit comprising a plurality of lighting elements (72). The surface of the circuit board (30) carrying the lighting elements is at least partially reflective. A spacer layer (70) is over the circuit board and a top reflector (82) is over the spacer layer. The spacer layer defines a light cavity air gap between the circuit board and the top reflector, and the top reflector and/or the circuit board is provided with an array of light out-coupling structures.
摘要:
To improve the illumination efficiency of hand-held illumination devices, this invention proposes a new illumination device having the “rolling” function, which is capable of illuminating the target area on which a user is currently focusing and rolling the illuminated area as the user is reading forward or backward. The illumination device comprises two pluralities of lighting elements, an illuminating body and a controller. The controller can control one plurality of lighting elements to emit light to illuminate a part of the illuminating body, which can further deflect the light to a part of the surface of the target.
摘要:
It is disclosed an optical element (200) wherein one or more light-emitting diodes, LEDs, and additional optics may be provided in an integrated solution that may relatively easily be assembled and maintained in a desired position relatively each other. The optical element (200) may enable one or more LEDs and additional optics to be provided in an integrated solution that is relatively thin and compact in comparison with known devices, such that light from one or more LEDs may be injected into a thin light guide (205, 206) such as an optical fiber, an optical fiber array, a ribbon-shaped light-guiding structure, etc.
摘要:
The invention describes a light sensor (1) comprising a filter arrangement (11), which filter arrangement (11) comprises a number of spectral filters (F1, F2, . . . , Fn) for filtering incident light (L), wherein a spectral filter (F1, F2, . . . , Fn) is realized to pass a distinct component of the incident light (L), an aperture arrangement (12) for admitting a fraction of the incident light (L), and a sensor arrangement (13) realized to collect the admitted filtered light (L′), which sensor arrangement (13) comprises an array of sensor elements (130) for generating image-related signals (S, S1, S2, . . . , Sn) and which sensor array is sub-divided into a number of regions (R1, R2, . . . , Rn), wherein a region (R1, R2, . . . , Rn) of the sensor array is allocated to a corresponding spectral filter (Fi, F2, . . . , Fn) such that an image-related signal (S) generated by a sensor element (130) of a particular region (R1, R2, . . . , Rn) comprises information pertaining to the direction of origin and/or the spectral composition of the light passed by the corresponding spectral filter (F1, F2, . . . , Fn). The invention further describes a light sensor device (10) for determining the direction of origin and/or the spectral composition of light (L) incident at the light sensor device (10), a method of collecting incident light (L), and a method of determining the direction of origin and/or the spectral composition of incident light (L).
摘要:
A lighting system comprising a plurality of controllable light emitting elements 3 is disclosed. The lighting system further comprising a spreading optical element 5 arranged in front of the plurality of light emitting elements to shape the light emitted from the lighting elements, and a controller 7 for varying a light emission angle range of light emitted from the spreading optical element 5 by controlling each of the plurality of controllable light emitting elements. This allows the light emitted from the spreading optical element to be varied without varying any physical parts of the lighting system, because the controller now controls each of the light emitting elements, by e.g. dimming one or more of the light emitting elements or by switching one or more of the light emitting elements off.
摘要:
The invention relates to a luminous window which can function both as a broad area light source and as a transparent window. The broad area light source is achieved by coupling light into a plate-shaped light guide, e.g. via the edges of the light guide, and extracting light from the light guide using geometric protrusions or diffraction gratings into a scattering layer which outputs the broad area light. The transparent window is achieved by switching the scattering layer into a non-scattering state, and possibly switching off the light source, so that light can propagate freely through the light guide and the scattering layer.