Tsuneo Hasegawa

Title: Tsuneo Hasegawa: Innovator in Wafer Inspection Technology

Introduction

Tsuneo Hasegawa is a notable inventor based in Toda, Japan. He has made significant contributions to the field of optical technology, particularly in wafer inspection apparatuses. With a total of 2 patents, Hasegawa's work has advanced the efficiency and operability of inspection systems.

Latest Patents

Hasegawa's latest patents include a wafer inspection apparatus and a focus-detecting method and device. The wafer inspection apparatus features a first convey system and a second convey system designed to reduce the convey time of selected wafers. The first convey system is movable in a direction perpendicular to a wafer convey reference surface and includes multiple independently operable arm portions. The second convey system consists of rotary arm portions that also move perpendicularly to the wafer convey reference surface. This innovative design results in a shorter wafer convey time compared to conventional systems.

The focus-detecting method and device is aimed at detecting when an object is positioned in the focal plane of an object lens. It involves forming a pattern or light-source image based on a light beam directed at the object. The light beam is reflected back to the object lens, creating multiple images along the optical axis. A photodetecting device is arranged on the final imaging plane, with a shielding plate strategically placed to partially block the light beam from reaching the device.

Career Highlights

Hasegawa is currently employed at Nikon Corporation, a leading company in optical and imaging technology. His work at Nikon has allowed him to focus on developing advanced technologies that enhance the capabilities of imaging systems.

Collaborations

Some of Hasegawa's notable coworkers include Manabu Komatsu and Kurata Honma. Their collaborative efforts contribute to the innovative environment at Nikon Corporation.

Conclusion

Tsuneo Hasegawa's contributions to wafer inspection technology and optical systems have made a significant impact in the field. His innovative patents reflect a commitment to improving efficiency and operability in imaging technologies.