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Patent

Solar lighting reflector apparatus having slatted mirrors and improved tracker

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TLDR
In this paper, a solar lighting apparatus for illuminating the interior of a roofed building includes a reflector assembly rotatable about a vertical axis for tracking daily movements of the sun.
Abstract
A solar lighting apparatus for illuminating the interior of a roofed building includes a reflector assembly rotatable about a vertical axis for tracking daily movements of the sun. The reflector assembly includes multiple planar reflector panels each extending about a horizontal axis and supported between a pair of opposing, parallel side frame members inclined upwardly toward their rear ends at approximately a 25° angle to the horizontal. The reflector panels are oriented in their operative position at right angles to the side frame members and are inclined at approximately a 65° angle to the horizontal. The reflector panels are spaced apart from one another by a distance approximating the width of each panel to prevent leading reflector panels from shading trailing reflector panels. Each of the reflector panels is secured to the side frame members about a pivotal connection for allowing the reflector panels to be rotated to a compact shipping position lying substantially within the plane defined by the side frame members. The reflector assembly is supported by a rotatable support ring geared to a drive motor selectively powered from a storage battery that is in turn charged by a first photovoltaic panel. A solar tracking circuit selectively couples the storage battery to the drive motor for rotating the reflector assembly. A second smaller photovoltaic panel directly powers the tracking circuitry to avoid draining the storage battery. The tracking circuitry prevents false tracking under cloudy-bright conditions, and automatically seeks the sun following extended hours of overcast conditions.

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References
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Patent

Solar lighting system

TL;DR: In this paper, a tracking system is provided to maintain a solar collector device directed toward the sun throughout the day so that a maximum amount of light energy is collected thereby, which can be used to provide light in various areas through various utilization devices, such as lamps, indicator devices, signs, etc.
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Solar energy converter carousel mounted rack

TL;DR: In this paper, a solar energy collector and converter, carousel mounted rack comprising a plurality of elongated reflectors mounted for arcuate movement on a platform and mounted for further arcuate motion each around a heating tube arranged in the linear focus of the reflectors, the carousel and reflectors each being linked to tracking mechanisms which cause the reflector to be trained toward the location of the sun so that they receive a maximum amount of solar energy.
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Combined solar tracking reflector and photovoltaic panel

TL;DR: In this article, a solar lighting apparatus is disclosed for illuminating the interior of a building while simultaneously generating electrical power from one or more photovoltaic panels secured to the reflector apparatus for rotation therewith to track daily movements of the sun.
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Artificial and solar lighting system

TL;DR: In this paper, a sun collector is mounted on the roof of a building and tracks the sun during daylight hours, and a concentrated beam of sunlight is directed through a light transmission channel to locations within the building where the light is distributed.
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Tracking reflector assembly for a skylight

TL;DR: In this paper, a tracking reflector assembly for a skylight includes a ring-shaped base member rotatably supported by a plurality of rollers which engage a channel formed within an annular wall of the ring.