www.abovetopsecret.com...
Just posted this, got no replies as of yet but it's an important development IMHO.
How the Sunflower Solar Concentrator Works
1. The sun's rays strike the Sunflower's 25-mirror array.
2. The mirrors are aligned to focus incoming light into a concentrated point.
3. The concentrated light strikes an overhead panel of photovoltaic silicon, creating electrical current. A processor analyzes the reflections to track the sun's position and instructs a pair of motors in the base of the Sunflower to realign the mirrors accordingly.
The challenge for Energy Innovations' engineers was to keep a grid of 25 mirrors focused on a single point as the sun travels across the sky - and to do it cheaply. The goal: control each mirror independently without requiring separate motors for each mirror.
The key: a surface - based on a mathematical curve called the conchoid of Nicomedes - that dictates the position of each mirror. The surface, sampled at 25 points, is represented in the Sunflower by a grid of ball bearings attached to a swinging frame.
Moving the frame requires only two motors: As it swings on an x-y axis, the bearings move the mirrors in tandem, yet each mirror follows its individual path.