Fresnel-Type Reflector, Laser Cut
Description
A Flat Pattern That Can Be Scrunched Into Shallow Conical Rings Which Approximate A Parabolic Reflector (Focuses Far-Away Light Sources Into A Small Area). Focal Length And Diameter Are Both About 11". Update 2018-06-18: I Have Added An Octave Script That Generates Flat Patterns For Other Geometries.
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