Lanhua Wei

Title: Lanhua Wei: Innovator in Optical Metrology Systems

Introduction

Lanhua Wei is a prominent inventor based in Fremont, CA, known for his significant contributions to the field of optical metrology systems. With a total of 18 patents to his name, Wei has developed innovative methods and systems that enhance the accuracy and efficiency of measurement processes in various applications.

Latest Patents

One of Wei's latest patents focuses on metrology system calibration refinement. This invention presents methods and systems for matching measurement spectra across one or more optical metrology systems. The values of system parameters used to determine the spectral response of a specimen are optimized to minimize differences between measurement spectra generated by a reference system and a target system. Additionally, the patent addresses methods for matching spectral errors across optical metrology systems. A trusted metrology system measures specimen parameters to reduce model errors caused by differing measurement conditions. Furthermore, Wei's work includes methods for parameter optimization based on low-order response surfaces, which significantly reduces the compute time required for refining system calibration parameters.

Career Highlights

Throughout his career, Lanhua Wei has worked with notable companies such as Therma-Wave, Inc. and KLA-Tencor Corporation. His experience in these organizations has allowed him to develop and refine his expertise in optical metrology, contributing to advancements in the field.

Collaborations

Wei has collaborated with esteemed colleagues, including Jon Opsal and Allan Rosencwaig, further enhancing the impact of his work in optical metrology systems.

Conclusion

Lanhua Wei's innovative contributions to optical metrology systems have established him as a key figure in the field. His patents reflect a commitment to improving measurement accuracy and efficiency, making significant strides in technology.