Bi-focussed solar energy concentrator

Details Bi-focussed solar energy concentrator Bi-focussed solar energy concentrator

1984-09-24

1985-10-08

Jones, Larry

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

136246, 350452, 126417, 126452, F24J 302

Patent

active

045453667

ABSTRACT:
A refractive optical concentrator for focussing solar energy on to small focal spots includes a linear Fresnel lens optically cross-coupled with simple cylindrical lenses. The cross-coupled lens concentrator comprises an optically clear dielectric material, such as acrylic plastic, with a plurality of linear prisms formed on its inner surface, and a plurality of perpendicularly mounted cylindrical lenses formed on its outer surface, such that the cylindrical lenses focus the sunlight toward a series of lateral axes and the prisms re-focus the sunlight along a longitudinal axis. The bi-focussed radiant energy is thereby concentrated upon a series of photovoltaic cells for transforming sunlight into electrical energy.

REFERENCES:
patent: 593045 (1897-11-01), Cummings
patent: 3915148 (1975-10-01), Fletcher et al.
patent: 3991741 (1976-11-01), Northrup, Jr. et al.
patent: 4069812 (1978-01-01), O'Neill
patent: 4116223 (1978-09-01), Vasilantone
patent: 4299201 (1981-11-01), Tsubota

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