Haruhiko Kusunose

Title: Haruhiko Kusunose: Innovator in Optical Technology

Introduction

Haruhiko Kusunose, based in Kanagawa, Japan, is a prominent inventor with a remarkable portfolio of 24 patents. His innovations primarily focus on advancements in optical technologies and methods, particularly in the realm of mask inspection and contamination prevention for optical devices.

Latest Patents

Kusunose's latest contributions to the field include two significant patents. The first is a "Mask inspection method and mask inspection apparatus," which enhances resolution in a specific direction while maintaining contrast during the inspection of an anamorphic mask. This method involves capturing images of the mask using a photodetector with rectangular pixels, where the dimensions in the longitudinal and lateral directions are crucial for accurate image analysis based on varying reduction rates.

The second patent, titled "Optical device, and method for preventing contamination of optical device," introduces an innovative optical device designed to effectively mitigate contamination. This invention comprises a light source generating EUV (Extreme UltraViolet) or VUV (Vacuum UltraViolet) light, housed within a specialized chamber. It features an optical element to guide the light, an introduction unit for hydrogen or helium gas, and a negative voltage application system that monitors ion currents to adjust the gas introduction dynamically.

Career Highlights

Kusunose currently works at Lasertec GmbH, where he applies his extensive knowledge and skills to foster innovation in optical technologies. His ingenuity in developing patentable methods has earned him recognition and respect within the technology sector.

Collaborations

Throughout his career, Kusunose has collaborated with talented individuals, notably Kiwamu Takehisa and Tsunehito Kohyama. Together, they contribute to pushing the boundaries of optical technology, leveraging their combined expertise to achieve groundbreaking results.

Conclusion

Haruhiko Kusunose remains a significant figure in the field of optical technology, with his innovative patents setting new standards for mask inspection and contamination prevention. His work at Lasertec GmbH, alongside respected colleagues, continues to shape the future of optical devices, reinforcing the importance of innovation in this dynamic industry.