Wei-Chun Hung

Title: Innovations by Wei-Chun Hung

Introduction

Wei-Chun Hung is a notable inventor based in San Jose, California. He has made significant contributions to the field of measurement technologies, particularly in non-contact methods for assessing stress in thin films. With a total of two patents to his name, his work reflects a commitment to advancing innovative solutions in engineering.

Latest Patents

Wei-Chun Hung's latest patents include a method and apparatus for non-contact measurement of stress in a film on a substrate. This innovative method involves positioning a substrate on multiple support elements, where a thin film is deposited. A first polynomial is defined to represent the surface of the substrate in contact with the support elements. A second polynomial is determined through optimization of potential energy acting on the substrate. By calculating a product of these polynomials, a finite-order polynomial is created to model the surface shape. Stress in the substrate is then determined by fitting this model with measured topographical data.

Another significant patent focuses on the characterization of specular surfaces. This system comprises a set of indexed light sources and a controller that drives these sources to sequentially illuminate a specular surface. A camera captures the reflected light, generating images corresponding to the illuminated light sources. A processing system analyzes these images to determine the topography of the specular surface based on spatial coordinates and the identity of each light source.

Career Highlights

Wei-Chun Hung is currently employed at Applejack 199 L.P., where he continues to develop and refine his innovative technologies. His work has positioned him as a key figure in the field of measurement systems, contributing to advancements that enhance precision and efficiency.

Collaborations

Some of Wei-Chun Hung's notable coworkers include Wojciech Jan Walecki and Raphael Morency. Their collaborative efforts contribute to the innovative environment at Applejack 199 L.P.

Conclusion

Wei-Chun Hung's contributions to measurement technologies through his patents demonstrate his expertise and innovative spirit. His work continues to influence the field, paving the way for future advancements in non-contact measurement methods.