Company Filing History:
Years Active: 1976-1980
Title: Ralph Warren Engstrom: Innovator in Photodetector Technology
Introduction
Ralph Warren Engstrom is a notable inventor based in Lancaster, PA (US). He has made significant contributions to the field of photodetector technology, holding a total of 2 patents. His work focuses on enhancing the sensitivity and functionality of photocathodes and photodetectors.
Latest Patents
Engstrom's latest patents include the development of a bi-alkali telluride photocathode. This innovative photocathode is created by depositing a film of tellurium on a conductive base and sensitizing it with at least two different alkali metals, such as cesium and potassium or sodium and potassium. The resulting photocathode exhibits high sensitivity in the ultraviolet region while remaining largely insensitive to solar radiation through the earth's atmosphere. This technology is particularly useful in 'solar-blind' detectors. Another significant patent is the photodetector filter structure, which features a transparent dome formed from a segment of a spherical shell of uniform thickness. An optical filter is applied to its surface, and a photodetector is positioned on the concave side of the dome, allowing light rays passing through the dome to fall directly on the center of the photodetector.
Career Highlights
Engstrom is currently employed at RCA Inc., where he continues to innovate and develop new technologies in the field of photodetection. His work has contributed to advancements that enhance the performance and application of photodetectors in various industries.
Collaborations
Throughout his career, Engstrom has collaborated with notable colleagues, including David Eugene Bowser and Arthur F McDonie. These collaborations have fostered an environment of innovation and have led to the development of cutting-edge technologies.
Conclusion
Ralph Warren Engstrom's contributions to photodetector technology demonstrate his commitment to innovation and excellence in his field. His patents reflect a deep understanding of the complexities of photodetection, paving the way for future advancements.