Location History:
- Atsugi, JP (1988)
- Kanagawa, JP (1996)
- Ebina, JP (1987 - 2003)
- Tokyo, JP (2000 - 2003)
Company Filing History:
7 out of 5,290 
3 out of 389 
19 out of 832,891 Years Active: 1987-2003
Title: Innovations of Junzo Yamada in Electro-Optic Sampling Technology
Introduction
Junzo Yamada, a notable inventor residing in Ebina, Japan, holds an impressive portfolio of 27 patents, demonstrating his significant contributions to the field of electro-optic technology. His innovations focus on enhancing measurement capabilities through advanced electro-optic sampling oscilloscopes and probes.
Latest Patents
Among his latest patents is the "Electro-optic sampling oscilloscope," which incorporates an electro-optic probe containing an electro-optic crystal. This groundbreaking oscilloscope operates by placing the crystal under the influence of an electric field generated by a measured signal. Laser pulses are directed to the crystal, undergoing polarization, which facilitates the production of measurement data representative of the waveform. Users can easily select specific measurement data from multiple files displayed on-screen. Additionally, the oscilloscope is designed to create an outline waveform based on a reduced number of sample points from the selected data, enhancing its usability and efficiency.
Another notable patent is the "Electro-optic probe," which consists of several critical components. The system includes a laser diode that emits modulating laser light, two lenses for converting and focusing the light, and an opto-electronic element with a reflection film. The innovation incorporates an isolator device that transmits the modulating laser light while separating reflected beams into signal beams transformed into electrical signals by photo-diodes. This sophisticated design ensures precision in measurement and data collection.
Career Highlights
Junzo Yamada’s career reflects his dedication to innovation within the electro-optic field. He has made significant strides in developing technology that enhances measurement accuracy and functionality. His work has been instrumental in advancing the capabilities of electro-optic sampling equipment, making a lasting impact on the industry.
Collaborations
Throughout his career, Junzo has collaborated with esteemed colleagues, including Mitsuru Shinagawa and Tadao Nagatsuma. These partnerships have contributed to the refinement and success of his inventions, demonstrating the importance of cooperation in technological advancements.
Conclusion
Junzo Yamada stands out as a prolific inventor with a strong emphasis on electro-optic sampling technology. His 27 patents reflect a commitment to innovation and improvement in measurement technologies. His contributions not only advance scientific understanding but also enhance practical applications in various fields. The ongoing exploration and development in tandem with his colleagues continue to pave the way for future breakthroughs in electro-optic technology.