摘要:
A light emitting device (1) comprising a plurality of first light sources (21, 22, 23, 24, 25, 26, 27, 28) adapted for, in operation, emitting first light (13) with a first spectral distribution, and a first light guide (3) comprising a first light input surface (31, the first light guide being adapted for receiving the first light with the first spectral distribution at the first light input surface, converting at least a part of the first light with the first spectral distribution to second light (14) with a second spectral distribution, and guiding the second light to the first light input surface, the light emitting device further comprising one first light out-coupling element (9, 91, 92) for coupling light out of the first light input surface, the first light out-coupling element being arranged in or on the first light input surface at a pre-selected location on a plane in which the first light input surface extends.
摘要:
The present invention relates to an optical system, wherein the optical system comprises a transparent optic defining an optical volume, the transparent optic comprising a first main face adapted to admit light into the optical volume and a first turning optic for turning the light admitted inside the optical volume such that the light is internally reflected within the optical volume.
摘要:
The present invention relates to an optical system, wherein the optical system comprises a transparent optic defining an optical volume, the transparent optic comprising a first main face adapted to admit light into the optical volume and a first turning optic for turning the light admitted inside the optical volume such that the light is internally reflected within the optical volume.
摘要:
Technology is disclosed for optimizing a near-eye display using a waveguide. A first waveband for a first color narrower than the full spectral bandwidth for the first color and a second waveband for a second color adjacent to the first color in the visible spectrum are generated in image light of an image generation unit like a microdisplay. The first waveband and the second waveband are coupled into a same layer of a diffractive waveguide. An input grating of the same layer of the waveguide has a grating wavelength band approximately matching a waveband extensive with the first waveband and the second waveband. A converted green light emitting diode (LED) may be used for obtaining a first waveband centered around 515nm in some examples. One of more of the wavebands may be obtained using filters, for example filters using dichroic mirrors, quantum dots or a combination of these.
摘要:
A method and device for illuminating surfaces of an edge-illuminated light guide is employed in embodiments including windows, eyeglasses, and signage. Particularly, the disclosed approach embeds a pattern of micro light reflecting lenses (micro light reflectors) within an edge-illuminated light guide for the purpose of generating surface illumination. The method and device further enables see-through illumination by using invisible micro light reflectors to illuminate a light guide surface.
摘要:
This disclosure provides systems, methods and apparatus that can generate PV power and simultaneously provide artificial lighting. The devices disclosed herein include a first optical structure having a plurality of focusing elements that can collect and focus ambient light onto a first set of light redirecting elements that is optically coupled to at least photovoltaic (PV) cell. The devices also include at least one illumination source that is optically coupled to a first edge of a second optical structure including a second set of light redirecting elements that can direct light from the at least one illumination source out of the device to provide artificial lighting. The at least one photovoltaic cell is coupled to a second edge of the second optical structure.
摘要:
La présente invention concerne un vitrage feuilleté éclairant, de préférence un vitrage éclairant pour véhicule, comprenant (a) une première feuille (1), en verre minéral ou organique, avec une première face principale (11), une deuxième face principale (12) et une tranche (13), (b) une deuxième feuille (2), en verre minéral ou organique, avec une première face principale (21), une deuxième face principale (22) et une tranche (23), (c) un intercalaire de feuilletage (3) transparent, en contact adhésif avec la deuxième face principale (12) de la première feuille (1) et avec la première face principale (21) de la deuxième feuille (2), (d) au moins une barrette de diodes électroluminescentes (LED) comportant une carte à circuits imprimés (PCB) (41) et une pluralité de LED (42), positionnée de manière à ce que les faces émettrices (43) des LED soient en regard de la tranche (13) de la première feuille (1), (e) un ou plusieurs éléments diffusants situés de préférence sur une des faces principales de la première feuille ou dans l'épaisseur de la première feuille, caractérisé par le fait que l'intercalaire de feuilletage (3) comporte sur au moins une de ses faces principales, une couche opaque de masquage (6) s'étendant du bord de l'intercalaire vers le centre du vitrage de manière à couvrir une zone où la lumière des LED, en l'absence de ladite couche opaque de masquage, serait visible sous forme de halos lumineux à travers la deuxième feuille (2).