Flachglas MarkenKreis – a cooperative of medium-sized companies in Germany and Europe – has introduced Infraselect Dynamic glass to the European window market. This electrochromic laminated glass automatically controls the entry of light and energy into a building depending on the time of day and the sun’s position throughout the year.
Infraselect Dynamic is based on ConverLight Dynamic technology from ChromoGenics (Sweden). Under low electric voltage, lithium ions move within the layer, regulating light and energy transmission. The glass adapts to changes in daylight either automatically using light sensors or manually via an app or building control system. The system is extremely energy-efficient: <0.05 W/m² when switching and <1 µW/m² in standby mode.
Light transmittance ranges from 62% (in bright mode) to 18% (in dimmed mode), while the solar factor (g-value) can be reduced to 11%. According to the developers, this allows heat ingress to be reduced by up to 90% without losing transparency.
Infraselect Dynamic glass can be combined with other types of glazing, such as those offering sound insulation or burglary resistance. Such glazing reduces the need for air conditioning and artificial lighting, complying with certification standards such as GEG, LEED, BREEAM and DGNB. The absence of external blinds or moving parts also lowers maintenance costs.
Pilkington has also presented HeatComfort glass with NSG TEC™ conductive coating, which provides heating via infrared radiation.
Photo: converlight.com
Example of ConverLight application for a winter garden
Electrochromic glass with automatic light control introduced to the European market
ID no: 23744
Jun 11, 2025
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