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US 4,389,085 AGranted
Lighting system utilizing the sunlight
OwnerKei Moriinventor
Life of this patent
Estimating the term…
Abstract
A lighting system utilizing the sunlight comprising in general an optical system for focusing the sun rays at a point, an optical transmission line consisting of optical conductor means with light diffusion holes for transmitting therethrough the focused sun rays to at least one desired point, and an optical system for redistributing the sun rays transmitted through the optical transmission line into at least one desired space or spot.
Claims10
A solar lighting system, comprising:
- at least one optical fiber light distribution means comprising (i) an optically transparent core having a lateral surface, a light receiving end and another end remote therefrom, and having a refractive index such that the light is reflected toward the surface thereof at predetermined points, (ii) an optical cladding layer substantially surrounding said core for cooperating with said core to confine light being transmitted through said fiber, to said core, and (iii) a plurality of light diffusion holes disposed at said predetermined points in said cladding intermediate said ends for permitting light to escape from said core, each of said holes being filled with a transparent optical medium having a larger refractive index than that of said core;
- and
- optical lens means for coupling sunlight into the light receiving end of said light distribution means.
Dependencies are inferred from the claim text.