MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202531132749 A) filed by Asansol Engineering College, Asansol, West Bengal, on Dec. 28, 2025, for 'electrically controllable privacy window with integrated non-touch control interface.'
Inventor(s) include Kaushik Neogi; Dr. Apurba Chatterjee; and Sumanta Karmakar.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to an electrically tunable privacy glass system integrated with a gesture-based control interface, enabling users to adjust the transparency of glass panels through non-contact hand gestures. The system comprises an electrically responsive transparent panel, such as an electrochromic or polymer-dispersed liquid crystal (PDLC) panel, a gesture detection module, a control unit, and a power supply. The gesture detection module utilizes sensors such as infrared, ultrasonic, or vision-based components to detect user gestures performed in proximity to the glass. Detected gesture signals are processed by the control unit, which maps the gestures to corresponding transparency commands and regulates the electrical signal applied to the tunable layer to achieve real-time modulation of transparency. The system supports various gesture types, including swiping to increase or decrease transparency and waving to toggle between transparent and opaque modes. By eliminating the need for physical switches, remotes, or mobile applications, the invention offers a hygienic, user-friendly, and energy-efficient solution for privacy control in architectural, vehicular, and medical environments. Optional wireless communication modules allow integration with smart building and automation systems. This invention provides a fast-response, touchless interface for dynamic privacy management, improving convenience, hygiene, and functionality compared to existing systems."
Disclaimer: Curated by HT Syndication.
