Fresnel spiral reflector and method for making same

Details Fresnel spiral reflector and method for making same Fresnel spiral reflector and method for making same

1980-04-07

1982-09-21

Evans, F. L.

Stoves and furnaces

Stoves

Cooking

126438, 350299, 350320, G02B 508

Patent

active

043504124

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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