摘要:
The invention relates to an illumination module (1) comprising a plurality of light sources (2) distributed over a light guiding plate (3) accommodating said light sources and capable of guiding light of said light sources through at least a portion of said plate. The light guiding plate has one or more out-coupling structures (4), preferably arranged around each light source, so that at least a portion of the light emitted by a first light source (2A) and at least a portion of the light emitted by a second adjacent light source (2B) mix within said light guiding plate before leaving said illumination module as a single substantially collimated mixed light beam. The invention further relates to a lamp and a display apparatus comprising such an illumination module.
摘要:
The present invention relates to a luminous device (1), comprising a light source (2) for emitting source light of a source wavelength, wherein the intensity of the source light is controllable by a signal. The device further comprises a first phosphor material (3, 4) capable of converting at least part of the source light to light of at least a first wavelength, and a second phosphor material (3, 4) capable of converting at least part of the source light to light of at least a second wavelength. The first and second phosphor materials (3, 4) are arranged to have a first and second conversion efficiency, respectively, that are controllable by the signal. The ratio of intensities of light of the first and second wavelength, respectively, is dependent on the signal. Furthermore, the present invention relates to an LED bulb, an LED package and a lighting system comprising a luminous device according to embodiments of the present invention.
摘要:
The invention relates to an illumination system (10), a backlighting system and a display device. The illumination system comprises a light source (20) configured to emit light via a light guide (30) to a light exit window (40) of the illumination system. The light guide has a front wall (32) arranged opposite a rear wall (34) so as to guide light in a direction substantially parallel to the front wall. A distance (D) between the light guide (30) and the light exit window (40) reduces towards an edge (42) of the light exit window (40). The light guide (30) further comprises a light entrance window (36) for receiving the light from the light source which is arranged away from the edge of the light exit window. The illumination system according to the invention has, inter alia, the effect that its thickness may be reduced at the edge of the light exit window.
摘要:
The illumination system has an array of light sources (1,1',...) such as an array of light emitting diodes arranged in a pre-determined manner in a first plane (11), wherein dsource is a characteristic dimension of the spatial arrangement of the light sources in the first plane. An array of associated lenses (2,2',...) is arranged in substantially the same pre-determined manner in a second plane (12). Each lens has substantially the same focal distance flens. The array of lenses is provided at a plane distance dplane from the array of light sources. The plane distance dplane is substantially equal to the focal distance flens of the lenses. The illumination system has displacement means lor displacing the array of lenses with respect to the array of light sources so as to obtain a plurality of directional light beams projecting spots on a projection plane arranged at a projection distance dprojection from the illumination system, wherein dprojection≥10xdsource and dprojection≥10xdplane.
摘要:
A display unit comprising electro-wetting pixels (1300) is provided. The inventive pixels (1300) provide bistable or multi-stable pixel states and thus facilitates passive matrix addressing. For this purpose an additional electrode (1305) is arranged for each multi-stable state. Consequently, each pixel comprises one counter electrode (1306) and at least one pair of address and retain electrodes (1304, 1305). In order to activate a pixel, an address potential is applied to the address and retain electrodes (1304, 1305) in relation to the counter electrode (1306), and in order to deactivate a pixel the potential is removed. In order to retain a current pixel state a retain potential is applied to only the retain electrode (1305) in relation to the counter electrode (1306); the current pixel state, be it active or passive, will then be preserved and the retain potential configuration thus provides a bistable pixel state.
摘要:
A luminaire (20) comprising a light guide (11) having a first refractive index (n 1 ), the light guide (11) comprising a light-entry surface (14), a light-reflecting surface (15) for reflecting light entering at the light-entry surface (14), and a light-exit surface (16) opposite the light-reflecting surface (15), for allowing light to exit from the light guide (11), the light guide (11) being tapered toward the opposite end relative the light-entry surface (14). The luminaire (20) further comprises a light source (13), arranged to emit light toward the light-entry surface (14); a first optical member (17), having a second refractive index (n 2 ), in optical contact with the light-exit surface (16) of the light guide (11); a second optical member (18), having a third refractive index (n 3 ), in optical contact with the light-reflecting surface (15) of the light guide (11); and a functionality-enhancing structure (19) arranged on the opposite side of the second optical member (18) in relation to the light guide (11), for affecting an optical property of the luminaire (20) when the light source is in an off-state. The first refractive index (n 1 ) is greater than each of the second (n 2 ), and third (n 3 ) refractive indices, and the second refractive index (n 2 ) is greater than the third refractive index (n 3 ).
摘要:
The present invention relates to a light emitting device (100; 300; 400; 500) comprising at least two light emitting diodes (101; 301; 401; 501) and a first optical layer (102; 302; 402; 502) comprising a plurality of lenses (103; 303). The first optical layer (102; 302; 402; 502) is directly illuminated by the light emitting diodes (101; 301; 401; 501) and is adapted to create a plurality of images (104) of the light emitting diodes (101; 301; 401; 501). A device of the present invention provides an improved color quality in the far-field and is suitable for large area applications.
摘要:
PH009943 17 ABSTRACT: It is provided a luminaire kit of parts (100) for assembling a luminaire. The luminaire kit of parts (100) comprises light sources (107a-b) and light out-coupling devices (105a-b), The luminaire kit of parts (100) further comprises a light guiding element (101), the light guiding element (101) being configured to receive at least a subset of the light sources (107a-b) and at least a subset of the light out-coupling devices (105a-b) into a first type of 5 openings (103a-c) and a second type of openings (104a-b) respectively. It is also provided a method for assembling a luminaire.
摘要:
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.
摘要:
A light-emitting device (100), comprising a plurality of light emitting diodes (107) arranged spaced apart from each other on a substrate (108), is provided. The device further comprises a light guide plate (101) having a front surface (102) and an opposing back surface (103) that is provided with an array of protrusions (104) extending towards said substrate. The light guide plate is arranged such that light-emitting diodes emits light towards light receiving faces (105) of the protrusions (104). Further, collimators (110) are arranged between the light emitting diodes and the light receiving faces, to collimate the light before it enters the light guide plate. The light from the plurality of LEDs will be transmitted in to the light guide plate and will be distributed therein before exiting the light guide plate via the front side thereof. Thus, the present invention provides a light-emitting device that provides well- distributed and collimated light from a plurality of point light sources.