On top of the bank building, a state-of-the-art color-changing LED lighting system is employed to light up the huge 18 foot high by 92 foot long bank name sign.
This advanced LED lighting system was supplied by Act One Communications in Irwindale, California. The technology is based on installation of flexibly-linked lighting pixels behind the sign face.
Those pixels, as they are not bound on a rigid surface, can fit into any surface configuration regardless of its shape and size: 2D, 3D, flat, segmented, curved, spherical, to name a few.
Each lighting pixel is weatherproofed and composed of several red, green and blue LEDs that can generate up to one-billion brilliant colors regulated by an IC chip inside. The pixels are 1.75-inch in diameter and weighs only one ounce.
For the Bank Boston sign, there are 4,000 pixels used, distributed evenly at 4-inch spacing. With a compact digital controller, each pixel can be addressed individually, such allowing maximum flexibility and variations for the color pattern design.
For the huge bank sign, the lighting system consumes a maximum power of 4,000 watts. While in operation with continuous color changing, it only draws about 1,200 watts ?C the same as turning on a household hair dryer!
The sign has been in operation for five years since installation and runs still like new. Bank Boston is very pleased with the lighting system made by Act One for its artistic and quality performance, energy efficiency, and reliable long-life operation.
An optical fiber cable is a cable containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed. Different types of cable are used for different applications, for example long distance telecommunication, or providing a high-speed data connection between different parts of a building.
Optical fiber consists of a core and a cladding layer, selected for total internal reflection due to the difference in the refractive index between the two. In practical fibers, the cladding is usually coated with a layer of acrylate polymer or polyimide. This coating protects the fiber from damage but does not contribute to its optical waveguide properties. Individual coated fibers (or fibers formed into ribbons or bundles) then have a tough resin buffer layer and/or core tube(s) extruded around them to form the cable core. Several layers of protective sheathing, depending on the application, are added to form the cable. Rigid fiber assemblies sometimes put light-absorbing ("dark") glass between the fibers, to prevent light that leaks out of one fiber from entering another. This reduces cross-talk between the fibers, or reduces flare in fiber bundle imaging applications.
Single-mode Fiber Butterfly Cable
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