LED technology enables a wider range of lighting applications, including various types of luminaires. A German company, LUCEM, created a material of light-emitting concrete which is made of layers of transmitting optical fibers. The material allows designers to break the limitation of luminaires for more flexible and creative architecture and interior design. (Image: LUCEM) The products are mixture of fine concrete and optical fibers. The company used thousands of fine optical fibers that are only 0.5 mm diameter, put them layers by layers with the specially designed...