Solar ray-collecting device

Details Solar ray-collecting device Solar ray-collecting device

1988-10-11

1990-02-20

Sikes, William L.

350 9610, G02B 5172

Patent

active

049020897

ABSTRACT:
A solar ray-collecting device comprising a Fresnel lens, an optical coupling made of a tip-cut conical light guide and an optic cable is described. The solar rays focused by the lens are received at the large end of the optical coupling and discharged from the small end of the optical coupling and further guided into the optic cable. The Fresnel lens has a numerical aperture smaller than that of the optic cable. The optical coupling has the light-emitting end with the numerical aperture equal to that of the optic cable so as to eliminate the reflection loss. The light-emitting end of the optical coupling being adhesively joined to the light-receiving end of the optic cable by the use of an optical paste.

REFERENCES:
patent: 4389085 (1983-06-01), Mori
patent: 4484565 (1984-11-01), Mori
patent: 4553238 (1985-11-01), Shaw et al.
patent: 4654532 (1987-03-01), Hirschfeld
patent: 4729621 (1988-03-01), Edelman

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