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US 10,208,909 B2Granted
Passive skylight with two parabolic reflector segments
AssigneeEntech Solar, Inc.
InventorDavid Gelbaum
Life of this patent
Estimating the term…
Abstract
The present subject matter is an improved skylight to improved low sun-angle light collection and reduced high sun angle light and heat collection. A steeply sloping dome contains parabolic reflectors that redirect low elevation light into a light passage. The steeply sloping sides and the reflectors reflect high elevation angle rays away from a light passage.
Claims16
A passive skylight comprising:
- a dome to transmit light from an exterior of the dome to an interior of the dome, the dome sloping between a roof limit and a top limit;
- a curb coupled below the dome, the curb defining a light passage;
- and
- a first parabolic reflector and a second parabolic reflector positioned inside the dome, each reflector having a concave surface, each reflector positioned to direct substantially horizontal light incident on the concave surface downward through the light passage.
1 more element
A method of providing morning and evening interior illumination and preventing heating by the midday sun, comprising:
- positioning a skylight assembly over a light passage in a roof of a structure, wherein the skylight assembly is exposed to high sun elevation angle light rays during midday hours and low sun elevation angle light rays during the morning and evening hours;
- allowing the low sun elevation angle light rays to pass through a steeply sloping side of a dome of the skylight assembly;
- reflecting low sun elevation angle light rays with at least one of a pair of parabolic reflectors into the light passage;
- and
- reducing the high sun elevation angle light rays incident upon skylight assembly that reach the light passage.
2 more elements
Dependencies are inferred from the claim text.