Company Filing History:
Years Active: 1985-1997
Title: Innovations of Ronald A. Powell
Introduction
Ronald A. Powell is a notable inventor based in Redwood City, California. He has made significant contributions to the field of optical technology, holding a total of six patents. His work focuses on advanced measurement techniques that enhance the understanding of optical properties and temperature measurements.
Latest Patents
One of his latest patents is an optical spectrometer. This invention features a broadband optical detector designed to measure the total intensity I(λ, α) attributed to a portion of the optical spectrum. The measurement is facilitated by a sharp bandgap optical transmission element, which translates the bandgap over a desired wavelength interval using a band gap control parameter, T. The differential spectrum of the incident optical radiation is recovered by differentiating I(λ, α) with respect to the parameter T.
Another significant patent is a method and apparatus for temperature measurements. This invention allows for the remote measurement of temperature in a process chamber that has a substrate exhibiting a temperature-dependent band gap. The substrate is illuminated by a source of continuous spectrum light, which overlaps the band gap edge. The light exiting the substrate is focused by a lens and captured by a fiber optic, which directs it to a spectrometer for analysis. The spectrum is examined to determine the intensity versus wavelength histogram for exit rays, allowing for real-time substrate temperature determination based on predetermined calibration data.
Career Highlights
Ronald A. Powell is currently associated with Varian Associates, Inc., where he applies his expertise in optical technologies. His innovative work has contributed to advancements in measurement techniques that are crucial for various applications in science and industry.
Collaborations
Throughout his career, Ronald has collaborated with notable colleagues, including Susan Benjamin Felch and Dimitry M. Kirillov. These collaborations have fostered a productive environment for innovation and development in their respective fields.
Conclusion
Ronald A. Powell's contributions to optical technology through his patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence advancements in measurement techniques and optical applications.