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AssigneeGlass Dyenamics, Inc.
InventorsJohn P. CRONIN, Anoop AGRAWAL, Christopher ANGELO, Clemens HOFBAUER, Susana J. CASTILLO, Lori L. ADAMS
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The present invention relates to variable optical transmission windows and window panels (VLTP) which are used for architectural applications such as building entryway systems and windows. The optical transmission of the VLTPs is reversibly changed by applying an electrical voltage. This disclosure includes combination of more than one VLTP in a single window which darken to different colors. This disclosure is directed to the use and powering of such panels in door and windows. The doors and windows having these VLTPs may also have other electronic devices which provide added user functionality.
A building entryway system containing at least one variable light transmission panel (VLTP), wherein the VLTP is used in at least one of a doorlite, a sidelite, and a transom of the building entryway system, and wherein the VLTP is configured to change optical transmission and color from a bleached state to a colored state upon application of an electric voltage thereto, wherein the bleached state and the colored state in transmission have a color difference ΔE* equal to or greater than 35.
A window of a building entryway system, the window comprising a VLTP that partitions a first space located outside a building and a second space located inside the building, wherein the first space has an illumination level of L1 in lux and the second space has an illumination level of L2 in lux, and wherein the window is configured such that a privacy, P, of the first space through the VLTP from the second space is controlled by adjusting the visible transmission of the VLTP, such that a value of P≥5 according to
A building window system containing at least two variable light transmission panels (VLTPs) assembled in a parallel configuration, wherein each of the at least two of VLTPs darkens to a different color in their colored state, and wherein the at least two VLTPs have a color difference in the colored state in transmission characterized by:
Dependencies are inferred from the claim text.