This inventor holds 1 USPTO granted patent. Top assignee: Trustees of the Colorado School of Mines. Active years: 2007.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2007
Title: Youngwoo Yi and His Work in Liquid-Crystal Optical Switching
Introduction
Youngwoo Yi is an inventor associated with Boulder, Colorado, and the Trustees of the Colorado School of Mines. His listed patent concerns an optically controlled liquid-crystal light valve, a device designed to regulate a light beam using a second control beam.
Latest Patents
Yi is credited with 1 patent: “All-optically prepared and controlled nematic liquid crystal light valve.” The invention uses photoinduced anisotropy in molecular layers coating the inside surfaces of a liquid-crystal cell. One surface is permanently aligned by exposure to polarized light in the presence of oxygen, while the other responds reversibly to the control beam’s polarization. This arrangement enables optical switching without using contact-rubbing methods to permanently align one of the cell’s layers.
Career Highlights
The patent reflects Yi’s work on controlling light through the interaction of optical beams and liquid-crystal materials. Its approach combines a permanently prepared surface with a surface that can adapt to the control beam, providing a method for regulating light intensity.
Collaborations
Yi’s listed coworker is Thomas E. Furtak. The patent is associated with the Trustees of the Colorado School of Mines.
Conclusion
Youngwoo Yi’s patent describes an optical switching approach that uses light-induced molecular alignment to control a liquid-crystal valve without contact-rubbing alignment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile