| abstract |
An electrochromic assembly (32) is disclosed. The assembly comprises: first and second electrodes (22, 24), at least one electrode being transparent; a porous membrane (10) defining a plurality of pores, the membrane having a first refractive index and located between the electrodes (22, 24); an electrolyte filling the pores, the electrolyte having a second refractive index substantially matching the first refractive index, the electrolyte and membrane together forming a substantially transparent electrolytic layer; and at least one electrochromic layer (18) covering at part of the first electrode (22). The membrane 10 is flexible and the spacing between the electrodes (22, 24) is held substantially constant by the membrane (10). The membrane is sealed with sealant (42). |