Title:
Fresnel Spiral Reflector And Method For Making Same
Fresnel Spiral Reflector And Method For Making Same
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Abstract
A spiral Fresnel reflector is formed by plotting a predetermined developed spiral on a flat sheet of reflecting material, cutting the flat sheet of reflecting material along the developed spiral and winding up the developed spiral until the spiral arms focus reflective light at a focal area. The developed spiral can have either a positive or a negative focal length.
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Date Issued
9/21/1982
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Patent