Johan De Greeve

Title: Innovations by Johan De Greeve: Advancements in Optical Measurement Technologies

Introduction

Johan De Greeve, an inventive mind based in Brabant, Belgium, has made significant contributions to the field of optical measurement technologies. With a total of seven patents to his name, his work focuses primarily on innovative methods that enhance the accuracy and efficiency of three-dimensional topography measurements.

Latest Patents

Among Johan's latest patents is a groundbreaking "Method and system for optical three-dimensional topography measurement." This invention involves projecting patterned illumination onto the surface of an object through an objective. By executing a relative movement between the object and the objective, this method captures multiple images of the surface via a detector. The process incorporates an oblique angle concerning the optical axis, allowing for the precise extraction of height information based on variations in recorded intensity from specific surface positions. Notably, alternating between patterned and uniform illumination further refines the data collected, enabling detailed measurement of specular structures alongside other surface features.

Another notable patent is the "Chromatic confocal area sensor," which is designed for 3D measurements of various features on a workpiece, such as ball height, co-planarity, component thickness, or warpage. This sophisticated system includes a broadband light source, a microlens array, a tunable color filter, a lens system, and a detector. The microlens array focuses light beams into specific points within a focal plane, while the tunable color filter adjusts the light beam to a central wavelength. The lens system ensures that different wavelengths are accurately imaged at varying distances, contributing to precise measurement outcomes.

Career Highlights

Johan De Greeve is currently employed at KLA-Tencor Corporation, a leading company that specializes in process control and yield management solutions for the semiconductor and other related industries. Over his career, Johan has showcased his innovative spirit by developing technologies that enhance measurement precision and ensure the highest quality standards in production settings.

Collaborations

Throughout his professional journey, Johan has collaborated with esteemed coworkers, including Guoheng Zhao and Maarten van der Burgt. These collaborations have enriched his work, allowing for the exchange of ideas and expertise that further elevate the technological advancements in optical measurements.

Conclusion

Johan De Greeve exemplifies the spirit of innovation in the realm of optical measurement technologies. His patents and contributions not only reflect his talent and dedication as an inventor but also significantly impact the industry he serves. As he continues to develop groundbreaking methods and systems, the future of measurement technology looks promising under his influence.