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The present invention relates generally to electromagnetic energy collection and more particularly to devices useful in the collection and utilization of radiant energy from solar and other sources. Apparatus according to claim 6 wherein said means mounting for seasonal tracking for apparent solar motion comprise means mounting for movement exclusively in a relative north-south direction.
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Apparatus according to claim 2 wherein said mounting means includes means mounting said concentrator elements for seasonal tracking of apparent solar motion.ħ. Apparatus according to claim 2 wherein said solar energy trap means is common to all said concentrator elements.Ħ. Apparatus according to claim 2 further including transparent protective film means overlaying said concentrator elements.ĥ. Apparatus according to claim 2 wherein said mounting means comprise box frame means.Ĥ. Apparatus according to claim 1 further comprising a plurality of said concentrator elements and means mounting said concentrator elements to extend longitudinally substantially parallel to each other.ģ. The dimensions of said energy inlet and said profile curve of said reflecting surfaces are such that said field of acceptance is capable of including an arc segment of coordinates equal to those described by the apparent motion of the sun within at least one hour before and after reaching zenith point at solstice.Ģ. The profile curve of at least a portion of each said concavely sloping reflecting surface being shaped to substantially assume the maximum possible slope consistent with reflecting the maximum angle solar energy rays which enter the concentrator energy inlet means within said field of acceptance onto said solar energy trap means, and wherein Solar energy trap means operatively associated with said concentrator element reflecting surfaces for receiving solar energy concentrated by said surfaces, Said concentrator element further having a field of acceptance for solar energy and an angular acceptance including a maximum angle of acceptance within said field, determinable at said energy inlet and with respect to said optical axis and Said concentrator element having an optical axis determinable by reference to distances separating opposing upper reflecting surface edges,
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Solar energy collection and utilization apparatus, said apparatus comprising:Ī concentrator element means for collecting and concentrating solar energy including,Ī pair of longitudinally extending substantially parallel walls having substantially concavely sloping opposing inner solar energy reflective surfaces, the upper edges of said surfaces defining solar energy inlet means,