Donald A Stephenson

Title: The Innovations of Donald A. Stephenson

Introduction

Donald A. Stephenson, an inventive mind based in Rochester, NY, has significantly contributed to the field of optics and display technology. With three patents to his name, his work has paved the way for advancements in OLED technology and measurement methodologies.

Latest Patents

One of Stephenson's notable inventions is a method for determining defects in OLED devices. This innovative approach involves illuminating OLED devices with specific input light spectra to excite the individual pixel emissive layers. By capturing the resulting output light and converting it into a digital image, it is possible to assess the pixel size, shape, location, and emitted light intensity, ensuring the device meets predetermined quality standards.

Furthermore, he developed a method and apparatus for the combined measurement of surface non-uniformity index of refraction variation and thickness variation. This process allows for the simultaneous measurement of the thickness, group index of refraction, and surface profiles of a sample. By using low-coherent light interferometry, Stephenson's methodology achieves precise distance measurements, which generate detailed profiles of both the top and bottom surfaces of the sample.

Career Highlights

Donald A. Stephenson is affiliated with the Eastman Kodak Company, where he has played a crucial role in advancing the company's optical technologies. His innovative solutions have not only enriched the company's research capabilities but have also made substantial contributions to the optical industry.

Collaborations

Throughout his career, Stephenson has collaborated with other prominent figures in the field, including Thomas F. Kaltenbach and Richard R. Bowers. Their combined expertise has fostered an environment of innovation, driving forward developments in optical technologies.

Conclusion

Donald A. Stephenson stands out as a distinguished inventor whose patents reflect his expertise and commitment to improving optical measurement and display technology. His innovative contributions continue to impact the industry, setting new standards for quality and precision in OLED devices.