High Efficiency External Daylighting Devices
AssigneeSerraLux Inc.
InventorMARK E. GARDINER
Life of this patent
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Abstract
A external light control device for equatorially located building utilizes tilting external light shelves that are capable of tilting backward (toward the building) from a vertical orientation to reflect low am (or late pm) sun away from occupants, but are deployed at a tilt away from the building exterior to capture more sun closer to noon time. The structure preferably integrate IR rejecting coating for incident light which is re-directed by TIR surface disposed normal to the thin film layers in a multi-layer IR reflective coating. The panel may be monolithic or comprise tilting louvers, which can be metallic, dielectric, or TIR reflectors. The louvers preferably also tilt in response to the determined sun position with the panel to optimize light utilization.
Claims16
An optical panel that comprises a plurality spaced apart reflective elements arranged in a stack that spans a height of the optical panel and each reflective element in said plurality has a reflective first surface and an opposing second surface, in which the second surface absorbs incident light.
An optical component comprising:
- a. a plurality of alternating bands of adjacent;
- i. planar see-through regions and
- ii. light redirecting regions in which the light re-directing regions are transparent and re-direct light by total internal reflection, in which the planar see-through regions are wider than the spacing of adjacent light redirect elements in the light re-directing regions.
Dependencies are inferred from the claim text.