This inventor holds 2 USPTO granted patents. Top assignee: Ricoh Company, Ltd.. Active years: 1982-1987.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1982-1987
Title: Jiro Koyama: Innovator in Optical Technology
Introduction
Jiro Koyama is a notable inventor based in Suita, Japan. He has made significant contributions to the field of optical technology, holding a total of 2 patents. His work focuses on innovative devices that enhance the transmission and control of light waves.
Latest Patents
Koyama's latest patents include an optical switching device and an optical control device. The optical switching device is designed to switch the transmission of light waves using a light-transmitting, crystalline material with a temperature-dependent index of refraction. This invention allows for the alteration of light transmission conditions by controlling the temperature of the material. In one configuration, a main waveguide and a branched waveguide enable the switching of light waves by adjusting the temperature at the intersection region. In another configuration, two waveguides are arranged end-to-end with a gap, where heating the switching region connects the waveguides optically, while they remain disconnected at normal temperatures.
The optical control device features at least two optical fibers placed extremely close to each other, allowing for optical coupling. This device transmits a selected optical wave from one fiber to another based on the propagation constants of the fibers and an ultrasonic wave applied to one of them.
Career Highlights
Jiro Koyama is currently associated with Ricoh Company, Ltd., where he continues to develop innovative optical technologies. His work has contributed to advancements in optical communication and control systems.
Collaborations
Koyama has collaborated with notable coworkers, including Masamitsu Haruna and Masaaki Mori, who have also contributed to the field of optical technology.
Conclusion
Jiro Koyama's innovative work in optical technology, particularly through his patents, showcases his commitment to advancing the field. His contributions are significant in enhancing the efficiency and functionality of optical devices.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile