Arrangement for a transparent covering element with an electrochromatic layer
First Claim
1. A covering element adapted for automatically controlling the transmission of incident electro-magnetic radiation through the covering element dependent upon the electro-magnetic radiation incident upon the covering element, the covering element comprising:
- an electro-chromatic layer for electrically controlling transmission of electro-magnetic radiation through the covering element to an area to be irradiated by the electro-magnetic radiation, the electro-chromatic layer having an outside which faces the incident electro-magnetic radiation and having an opposite inside which faces toward the area and also having means which are adapted to vary the transmission of electro-magnetic radiation through the electro-chromatic layer dependent upon an electric energy supplied to that layer;
a photo-electric layer at the outside of the electro-chromatic layer, the photo-electric layer being adapted for transmitting electro-magnetic radiation and for converting some of the electro-magnetic radiation that is incident on the photo-electric layer into electric energy;
means electrically connecting the photo-electric layer to the electro-chromatic layer for supplying the electro-chromatic layer with electric energy that is proportional to the electro-magnetic radiation which is incident on the photo-electric layer, for causing the electro-chromatic layer to automatically control the transmission of electro-magnetic radiation through the electro-chromatic layer and the covering element, dependent upon the incident radiation.
1 Assignment
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Accused Products
Abstract
A covering element consisting of transparent material is designed with an electro-chromatic layer for control of the transmission of light through the covering element. An electrical power which is required for control of the electro-chromatic layer is obtained from a photo-electric layer integrated in the covering element. The photo-electric layer is arranged outside the electro-chromatic layer. By means of the arrangement, when the light is at its most intensive, a high voltage is obtained from the photo-electric layer and can be transferred to the electro-chromatic layer so as to in this connection reduce, at least to a considerable extent, the transmission through the covering element. The arrangement can, within vehicle technology for example, be used in a sun-roof in order to prevent heating up of an interior space in sunny weather. By means of the arrangement, the transmission is automatically adapted according to the light. The arrangement also leads to the complete elimination of the risk that the vehicle battery will be discharged, since all the energy which is supplied to the electro-chromatic layer is generated in the photo-electric layer.
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Citations
15 Claims
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1. A covering element adapted for automatically controlling the transmission of incident electro-magnetic radiation through the covering element dependent upon the electro-magnetic radiation incident upon the covering element, the covering element comprising:
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an electro-chromatic layer for electrically controlling transmission of electro-magnetic radiation through the covering element to an area to be irradiated by the electro-magnetic radiation, the electro-chromatic layer having an outside which faces the incident electro-magnetic radiation and having an opposite inside which faces toward the area and also having means which are adapted to vary the transmission of electro-magnetic radiation through the electro-chromatic layer dependent upon an electric energy supplied to that layer; a photo-electric layer at the outside of the electro-chromatic layer, the photo-electric layer being adapted for transmitting electro-magnetic radiation and for converting some of the electro-magnetic radiation that is incident on the photo-electric layer into electric energy; means electrically connecting the photo-electric layer to the electro-chromatic layer for supplying the electro-chromatic layer with electric energy that is proportional to the electro-magnetic radiation which is incident on the photo-electric layer, for causing the electro-chromatic layer to automatically control the transmission of electro-magnetic radiation through the electro-chromatic layer and the covering element, dependent upon the incident radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification