Company Filing History:
Years Active: 2009-2010
Title: Innovations by Tom Lee in Photonic Crystal Light Emitting Devices
Introduction
Tom Lee is an accomplished inventor based in Basingstoke, GB. He has made significant contributions to the field of light-emitting devices, holding two patents that showcase his innovative approach to enhancing light extraction efficiency.
Latest Patents
Tom Lee's latest patents include the "Inverted-pyramidal photonic crystal light emitting device" and the "Pyramidal photonic crystal light emitting device." The inverted-pyramidal device features a light-emitting diode (LED) that exhibits high extraction efficiency and a more directional emission profile compared to traditional Lambertian sources. This device comprises a light-generating layer situated between two layers of semiconductor material, each with different doping types. The upper surface of the first layer is designed with a tiling arrangement of inverted pyramidal indentations filled with a material of different refractive index, forming a photonic band structure. This configuration allows for efficient light extraction through the upper surface, producing a beam that is significantly more directional. An enhanced version of this device includes a reflector beneath the second layer to utilize the microcavity effect. The pyramidal device shares similar features, with protrusions of semiconductor material surrounded by a different refractive index material, also aimed at improving light extraction efficiency.
Career Highlights
Tom Lee is currently associated with Luxtaltek Corporation, where he continues to innovate in the field of photonic devices. His work has been pivotal in advancing LED technology, making it more efficient and effective for various applications.
Collaborations
Some of Tom Lee's notable coworkers include James McKenzie and Majd Zoorob, who contribute to the collaborative environment at Luxtaltek Corporation.
Conclusion
Tom Lee's innovative work in photonic crystal light emitting devices has significantly impacted the efficiency of LED technology. His patents reflect a deep understanding of semiconductor materials and light extraction techniques, positioning him as a key figure in the field.