The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1979
Filed:
Oct. 03, 1977
Carlyle J Sletten, Acton, MA (US);
Solar Energy Technology, Inc., Bedford, MA (US);
Abstract
A solar energy concentrator comprising a cylindrical Fresnel lens, a specially shaped and positioned reflecting mirror, and a shaped tubular receptor for conveying the collected energy to terminals is described. These concentrators are arrayed parallel and contiguous to each other and oriented generally along an East-West line to receive the sun's radiant energy, and the lenses together with the special reflectors and designed to accomodate large elevation angle variations of the sun. The large acceptance angles achieved with the image collapsing concentrator, while at the same time maintaining a high concentration ratio, improves the reception of diffused as well as direct sunlight and the small surface area of receiving tubes diminishes the thermal radiation losses. A method for determining the shape and location of the special image collapsing reflector is described and applied to solar concentrators employing both lenses and reflectors of cylindrical and three dimensional forms.