Patent ID: 6131363
Filing Date: 2000-10-17
Classification: A01G,E04D,Y02A

Abstract:
A roofing system for a greenhouse, the roofing system being subject to sunlight and capable of selectively managing the sunlight transmitted into and reflected away from the greenhouse, the roofing system comprising:(a) at least one roofing sheet;(b) at least one transparent portion of said sheet; and(c) at least one opaque portion of said sheet, said opaque portion capable of reflecting a portion of the sunlight striking said opaque portion into the greenhouse through said transparent portion;wherein said roofing sheet has an outer and inner face;wherein said transparent portion of said sheet allows sunlight to pass through said transparent portion and into the greenhouse; andwherein said opaque portion of said sheet includes a spectrum-absorbing coating on the outer face of said roofing sheet and a reflective coating on the inner face of said roofing sheet, said spectrum-absorbing coating absorbing a portion of the color spectrum of the sunlight that strikes said opaque portion not vital for photosynthesis.