Abstract:
According to an aspect, a light guiding assembly (1) with a tubular member (2) for guiding light is provided. The light guiding assembly comprises a first layer (51, 61) having a first optical characteristic, the first layer being arranged on an inner wall (5) of the tubular member, and a second layer (52, 62) having a second optical characteristic, the second layer being adjustable at least with respect to the second optical characteristic and with respect to the extent of light allowed to be transmitted through the second layer. The second layer is coupled to a side of the first layer facing away from the inner wall. One of the first and second optical characteristics effects changing of the color of light guided in the tubular member, and the other one of the first and second optical characteristics effects reflection of light guided in the tubular member. Accordingly, the color of daylight guided through the tubular member can be tuned.
Abstract:
L'invention concerne un substrat verrier comprenant une feuille de verre dont une des faces principales comprend des motifs en relief, et une couche réfléchissante appliquée sur la face principale comprenant lesdits motifs, tel qu'il existe un plan H orthogonal au substrat de sorte que l'ensemble E des points de la surface du substrat tels que l'angle téta entre la normale locale à la surface et le plan H soit d'au moins 25°, représente plus de 30% de l'aire développée de la surface principale du substrat portant les motifs. Le substrat verrier est destiné à équiper les façades extérieures de bâtiments en tant que vitrage. Le substrat renvoie les rayons solaires vers le ciel dès lors qu'il est vertical et le plan H horizontal.Cette propriété réduit l'éblouissement des personnes au sol et participe à l'amélioration de l'albédo des villes.
Abstract:
A solar powered lighting system includes a solar module adapted to receive solar energy and transform received solar energy into electrical energy and a lighting module. The lighting module is electrically coupled to the solar module and is configurable to emit light using electrical energy generated by the solar module only while the solar module receives solar energy. The solar module and the lighting module are electrically couplable such that light emitted from the lighting module mimics a characteristic of sunlight from which the solar energy is received.
Abstract:
Lighting devices and methods for illuminating the interior of a building with natural daylight are disclosed. In some embodiments, a daylighting apparatus includes a tube having a sidewall with a reflective interior surface, an at least partially transparent light collector with one or more light turning elements, and a light reflector positioned to reflect daylight into the light collector. The one or more light turning elements can turn direct and indirect daylight into the tube so that it is available to illuminate the building. In some embodiments, the tube is disposed between the light collector and a diffuser positioned inside a target area of a building. In certain embodiments, the tube is configured to direct at least a portion of the daylight transmitted through the light collector towards the diffuser.