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Verfahren zur Herstellung eines flaechig ausgebildeten Lichtumlenkelements sowie eine Vorrichtung zur Durchfuehrung des Verfahrens

Producing laminar designed light deflecting element of flexible material transparent to sunlight - using method with number of steps and heated wire, working flexible material to stretch one surface provided with cuts running mutually parallel.
: Wirth, H.

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DE 1996-19637199 A: 19960912
DE 1996-19637199 A: 19960912
DE 19637199 C2: 19980716
Patent, Elektronische Publikation
Fraunhofer ISE ()

The method produces laminar designed light deflecting elements from material (1) transparent to sunlight, with two plane boundary layers totally reflecting sunlight, which are provided between the plane surfaces. A system is also provided for carrying out the method. The method also includes the application of narrow air gaps (3) in the flexible material, which have a gap distance in the micrometer range, which is smaller than the distance between both surfaces of the flexible material. The boundary surfaces worked into the material transparent to sunlight has a very high quality, so that the light is totally reflected at these surfaces is deflected without losses. ADVANTAGE - Cost effective prodn. Easily integratable in window surfaces. It has small structural depth. Visibility characteristics remain substantially unimpaired. Suitable tools can contribute to reduction of prodn. costs.