Location History:
- Mito, JA (1977)
- Mito, JP (1978)
Company Filing History:
Years Active: 1977-1978
Title: Yasushi Saito: Innovator in Electron Beam Technology
Introduction
Yasushi Saito is a prominent inventor based in Mito, Japan. He has made significant contributions to the field of electron beam technology, holding a total of 3 patents. His work has advanced the capabilities of charged particle apparatuses and electron microscopes.
Latest Patents
One of his latest patents is a SEM having D-C bias of video signal controlled by maximum and/or minimum. This invention involves a charged particle apparatus where a charged particle beam irradiates an object to be observed. Secondary emissions, such as secondary electrons emitted from the surface layer of the object, are detected. A signal indicative of the detected secondary emissions is applied to a control grid of a cathode ray tube to modulate an electron beam irradiating a fluorescent screen. The intensity of the electron beam is detected, and minimum and maximum values of the detected intensity are compared with predetermined reference signals to obtain deviation signals. The control grid signal is adjusted based on these deviation signals.
Another notable patent is the electron microscope, which features a condenses lens system that condenses an electron beam onto a specimen. The transmitted electron beam is magnified by a magnifying lens system and projected onto a fluorescent screen for visual observation. The quantity of electrons per unit area in the magnified electron beam is detected by an electron beam detector. In response to the detected signal, the condenser lens system is controlled to maintain a constant quantity of electrons per unit area in the magnified electron beam.
Career Highlights
Yasushi Saito is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to develop groundbreaking technologies that enhance the performance of electron beam devices.
Collaborations
He has collaborated with notable coworkers, including Shoji Kamimura and Seishiro Sato, contributing to various projects that push the boundaries of electron beam technology.
Conclusion
Yasushi Saito's innovative work in electron beam technology has led to significant advancements in the field. His patents reflect a deep understanding of charged particle apparatuses and electron microscopy, showcasing his role as a key inventor in this domain.