Michael Edward Holtz

US Patent:

6480336, Nov 12, 2002

Filed:

Feb 2, 2001

Appl. No.:

09/776319

Inventors:

Neall Edward Digert - Carlsbad CA
Michael Joseph Holtz - Boulder CO

Assignee:

Architectural Energy Corporation - Boulder CO

International Classification:

G02B 1700

US Classification:

359596, 359597, 160104

Abstract:

The mini-optical light shelf daylighting system is implemented in the paradigm of a window treatment that is applicable to both new installations as well as existing window glazing. In particular, the mini-optical light shelf is a passive, static optical device which receives incident daylight transmitted through a window and efficiently redirects it uniformly onto the interior ceiling surface in a diffuse manner, thereby creating a useful source of interior illumination. The mini-optical light shelf comprises multiple shelves, each of which contains an identical optically shaped top surface to allow light to be efficiently collected and accurately directed onto the ceiling surface. The optical shelves are narrow and can be implemented in the paradigm of a window treatment. The window area is partitioned into a view related glazing section and a daylight collection and redirection glazing area. The occupants views out of the building remain unobstructed through the view related area of the glazing to a height of approximately seven feet.