heliodon การใช้

• A heliodon is a traditional movable light device used by architects and designers to help model sun path effects.
• In general, the date adjustment causes the most difficulty for the heliodon designer, while the light source presents the most problems in use.
• Traditionally a heliodon was used to simulate the altitude and azimuth of the sun shining on a model building at any time of any day of the year.
• All of these factors can be modeled more precisely with a photographic light meter and a heliodon or optical bench, which can quantify the ratio of reflectivity to angle of incidence.