Abstract: Glazings comprising first and second channel-section glazing elements are described. The first and second channel-section glazing elements are arranged to define a cavity in which is located an inner glazing element comprising a glass glazing element, in particular a soda-lime-silica glass sheet, channel-section glazing element or sheet of rolled glass having at least one fire polished edge. The inner glazing element divides the cavity into at least two spaces to improve the thermal and/or noise performance of the glazing. By using low emissivity coatings on one or more major surfaces of one or more of the glazing elements, the thermal performance may be further improved. Mechanical performance may be modified by the particular type of inner glazing element used. It is possible to retrofit existing glazings to improve the thermal and/or noise performance thereof.

Abstract: A process is disclosed for driving an electrochromic element which consists of at least the following layers: a first electrode layer; a first layer in which ions can be reversibly intercalated; a transparent ion-conducting layer; a second layer in which ions can be reversibly intercalated; and a second electrode layer. One of the layers in which ions can be reversibly intercalated is an electrochromic layer and the other layer acts as a counter-electrode to the electrochromic layer. A voltage with values in a redox stability range of the electrochromic layer system is applied to the electrode layers and causes a change in color. The process is characterised in that the current (I) which flows through the electrochromic element is continuously measured. During a starting phase of the change in color, the voltage (U) rises or diminishes continuously to a maximum, predetermined, temperature-dependent end value (Umax).