What is electronic light control glass?

ELC glass is a laminated glass that you can change its state from transparent to opaque instantly by an electrical switch. UMU glass from NSG Japan, which we offer to our customers, is an ELC glass that uses liquid crystal film in a laminated glass structure. Several other terms have also been used to refer to this kind of glass such as smart glass and magic glass.

UMU glass, when in its off-state, has a white milky haze and transmits approximately 80% of light; therefore provides privacy as well as uniform and diffused light. Such day-lighting helps to improve occupants well-being and productivity. It also blocks 99% of ultraviolet (UV) light.

Since it is a laminated glass, its complementary benefits are safety and security. It can also be combined with other existing technologies such as insulating and coatings to offer other benefits such as energy saving and noise reduction. Also due to its electronically controlled state, it can be integrated into building intelligent control system to improve building performance.

When choosing a light control system, be it a conventional method such as blind, shade, curtain or a passive method such as photochromic and thermochromic or active electronic light control; one has to pay attention to the following factors:

energy efficiency
day-lighting
uniformity of day-lighting
aesthetics
privacy
safety & security
maintenance
cost
shading
protection of furnishings

UMU light control glass scores high on several of the above parameters.

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