ECOSS-D
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Light Direction & Diffusion by Season
"D" is a patented (US Patent No. 5,650,875 dated Jul. 22, 1997) member of the "Ecology Sun System" (ECOSS) family of sunlight modulating products developed by Figla Co., Ltd. of Tokyo, Japan. "D" denotes the product's main intended application- Diffusion.
"D" uses transparent acrylic rods in the air space to capture sun and sky light and then diffuse it to the inside of the building. A typical "D" application might be, then, a high transom light in the factory building where you wish to diffuse daylight down and in towards the factory floor. Viewed from the inside, a "D" panel has a strong horizontality, vivid surface brightness, a complex translucence, surprising visual depth and some of the gridded delicacy of Shoji screens.
"D" might also be used for decorative purposes. If the #3 surface is clear instead diffusing, then the rods will project a vivid rainbow pattern into the space. The rods might also be colored to alter, like stained glass, the color balance of the room.
The rods are extruded in lengths up to 2.4 meters using an acrylic resin (PMMA), specifically selected to resist solar degradation or discoloration. The rods, called controllers, are then stacked horizontally and held in place by vertical acrylic holders, typically spaced between 350 and 450mm on center. If required, the rods can also be oriented vertically. The entire "D" panel floats free in the air space to allow for expansion and contraction. Typically, the #3 glass surface is soft etched using FIGLA's TAPESTRY technique, providing directional diffusion of the light to the targeted surface.
"D" panels can be designed to fit into almost any window configuration imaginable.