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Download Examples of Heliodon Direct Sun Videos: Interior.mpg (1.3MB) Exterior.mpg (1.9MB) You may need to add .mpg to the file extension once downloaded to your desktop, depending on your browser configuration.
Requires the Quicktime Player Available Here
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the heliodon The heliodon is used to examine how the direct rays of the sun interact with an architect's building design. It is comprised of a tilting/rotating table (the earth) and a stationary 1000 watt theatrical light source (the sun). The table can be adjusted to represent the latitude, tilted to simulate any month of the year, and rotated to analyze any time of day. When a physical model is tested on the heliodon it is typically rotated through the sun angles present on June 21st, September 21st, and December 21st. This yields the sun pattern data for the highest, average, and lowest sun angles for the chosen location. Our primary tool for recording these tests is a digital video camera. When mounted to a model, it will record the movement of direct sun patterns entering the space throughout the day (see examples at left). Typically these studies seek to examine shading devices that eliminate direct sun from areas where visual tasks are critical. Direct sun can cause problems of heat gain and debilitating glare. The heliodon takes the guesswork out of complex sun-angle geometry and often will provide surprising results. See more examples of our heliodon studies at Betterbricks.com here.
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