Abstract:
Disclosed is a Lightweight low-cost solar concentrator comprising two sheets which are connected or sealed to each other on their outer periphery to define a gasproof chamber which is inflated with air or gas (5) in order to form the inflated mirror. One sheet is transparent (1 ) for sunlight (3) and the other sheet has a reflecting mirror-like surface (2). The periphery of the two connected sheets is fixed to a rigid support or envelopes it. The rigid support, such as a support frame (6), which is further fixed to a mirror support structure (7), defines the outline of the inflatable mirror and provides stability. For a defined adjustment of the pressure in the air or gas (5) which is enclosed in the gasproof chamber means for inflating or deflating the mirror (4) and a device for the generation of a defined pressure in the air or gas (72) are provided. The device for the generation of a defined pressure is an automatic device which is constantly or occasionally in conjunction with the gasproof chamber in such a way, that a defined overpressure is automatically generated and maintained in the air or gas enclosed in the inflatable mirror, in order to ensure a constant focal distance of the inflatable mirror. The inflatable mirror comprises a receiver (10) for concentrated electromagnetic radiation (8) which is either fixed on a rigid (9) or on an adjustable receiver support structure (11 ).
Abstract:
The invention relates to an actuation device for pedal operation of mechanical, pressure actuated, or electric devices having a two-dimensional actuation element (70) which can be adjusted in a plurality of directions from a starting position into an actuation position in which the actuation element operates a switch element (50, 52).
Abstract:
An inflatable light concentrating mirror (10) comprising a first transparent sheet (1) and a second reflective sheet (2), wherein the first sheet and second sheet are connected or sealed to each other, whereby a void is provided there-between, the void being adapted to receive a gas so as to inflate the light concentrating mirror, characterized in that the mirror further comprises tensioning means (14) adapted to produce a defined longitudinal tension (11) in at least the second sheet (2) such that wrinkles or creases therein are significantly reduced. The tensioning means comprises one or more tensioning devices (14) adapted to be attached to at least one mirror end or one free end of the second sheet, the tensioning device is configured to provide a pulling force (11) on the second sheet so as to provide the longitudinal tension.
Abstract:
Disclosed is a Lightweight low-cost solar concentrator comprising two sheets which are connected or sealed to each other on their outer periphery to define a gasproof chamber which is inflated with air or gas (5) in order to form the inflated mirror. One sheet is transparent (1 ) for sunlight (3) and the other sheet has a reflecting mirror-like surface (2). The periphery of the two connected sheets is fixed to a rigid support or envelopes it. The rigid support, such as a support frame (6), which is further fixed to a mirror support structure (7), defines the outline of the inflatable mirror and provides stability. For a defined adjustment of the pressure in the air or gas (5) which is enclosed in the gasproof chamber means for inflating or deflating the mirror (4) and a device for the generation of a defined pressure in the air or gas (72) are provided. The device for the generation of a defined pressure is an automatic device which is constantly or occasionally in conjunction with the gasproof chamber in such a way, that a defined overpressure is automatically generated and maintained in the air or gas enclosed in the inflatable mirror, in order to ensure a constant focal distance of the inflatable mirror. The inflatable mirror comprises a receiver (10) for concentrated electromagnetic radiation (8) which is either fixed on a rigid (9) or on an adjustable receiver support structure (11 ).
Abstract:
Die Bildwand (1) besteht aus einem platten- oder folienähnlichen Grundmaterial, dessen Oberfläche aus nebeneinander liegend angeordneten Hohl- oder Wölbspiegeln gleicher Grösse mit gleichen Spiegelkrümmungen besteht. Die Mikrospiegel der Mikrospiegel-Oberflächen-Struktur (2) haben vorzugsweise eine elliptische Umrissform (4) oder eine gestreckte sechseckige Umrissform (5). Die Mikrospiegel sind auf der Bildwandoberfläche in einem vorgegebenen Raster (3) mit bienenwabenförmiger Struktur derart angeordnet, dass ihre lange Halbachse vertikal orientiert ist. Durch die in horizontaler und vertikaler Richtung verschiedenen Krümmungen der Mikrospiegel wird das projizierte Licht (6) in Form eines elliptischen (7) bzw. annähernd elliptischen Lichtkegels (8) reflektiert. Die Mikrospiegel sind räumlich so orientiert, dass sich ihre optischen Achsen in einem definierten Schnittpunkt (18) auf der Bildwandnormalen (26) schneiden, wodurch sich eine räumliche Überlagerungszone (17) aller von den Mikrospiegeln reflektierten Lichtkegel ergibt, in der das reflektierte Bild gesehen werden kann. In Verlustbereiche (19) ausserhalb dieser Überlagerungszone (17) wird nur wenig oder kein Licht reflektiert.