Location History:
- Kanagawa-ken, JP (1996)
- Kawasaki, JP (1996)
Company Filing History:
Years Active: 1996
Title: The Innovations of Shuji Toyonaga
Introduction
Shuji Toyonaga is a prominent inventor based in Kanagawa-ken, Japan. He has made significant contributions to the field of optical engineering, particularly in the development of advanced interferometric systems. With a total of 2 patents, Toyonaga's work has been instrumental in enhancing the precision of surface profiling technologies.
Latest Patents
One of Toyonaga's latest patents is an "Interferometric surface profiler with an alignment optical member." This invention involves an interferometer where reflected light from both a reference surface and a subject surface is introduced to an imaging optical system through a beam splitter. The interference fringe formed from the light reflected from both surfaces is observed with a detection optical system. An alignment optical member is strategically placed in the optical path to facilitate accurate alignment of the subject surface, which can be easily attained. Additionally, a beam expander and a 90-degree retarder are incorporated to minimize noise introduced to the imaging optical system.
Another notable patent is the "Interferometer for observing the interference pattern of a surface under." This invention is designed for observing the shape of a surface with the desired spatial resolution. A variable aperture stop is arranged at a Fourier transform image plane within the imaging optical system, allowing for the adjustment of the aperture diameter in accordance with the desired spatial resolution.
Career Highlights
Shuji Toyonaga is currently associated with Nikon Corporation, a leading company in the field of imaging and optical technologies. His work at Nikon has allowed him to push the boundaries of optical engineering and contribute to innovative solutions in surface measurement.
Collaborations
Throughout his career, Toyonaga has collaborated with notable colleagues, including Takashi Gemma and Masato Shibuya. These collaborations have fostered a creative environment that has led to significant advancements in their respective fields.
Conclusion
Shuji Toyonaga's contributions to optical engineering through his patents and work at Nikon Corporation highlight his role as an influential inventor. His innovations continue to impact the field of interferometry and surface profiling technologies.