Company Filing History:
2 out of 1,788 
1 out of 1,008 Years Active: 1998-2004
Title: Shiro Shichijyo: Innovator in Wavelength Conversion Technology
Introduction
Shiro Shichijyo is a notable inventor based in Sodegaura, Japan. He has made significant contributions to the field of optical technology, particularly in wavelength conversion apparatuses and laser light generating systems. With a total of 3 patents to his name, Shichijyo's work has advanced the efficiency and effectiveness of optical devices.
Latest Patents
One of Shichijyo's latest patents is a wavelength conversion apparatus. This innovative device includes a multiplexer that combines pumped light and signal light. It features a wavelength conversion element that converts linearly polarized light components in the x direction, generating output light that is also polarized in the x direction. Additionally, the apparatus incorporates a light circulator that facilitates the flow of light between the multiplexer and the wavelength conversion element. Notably, the intensity of the output light remains constant, regardless of the incident polarization angle of the signal light.
Another significant patent is a laser light generating apparatus. The objective of this invention is to minimize loss within a resonator, thereby enhancing the efficiency of wavelength conversion. The resonator consists of two reflecting mirrors arranged linearly, with a non-linear optical crystal positioned within. This crystal is uniquely shaped to optimize the conversion of fundamental laser light into a second harmonic. The design allows for adjustments in beam diameter and convergence angle, further improving the efficiency of the wavelength conversion process.
Career Highlights
Shichijyo has worked with prominent companies such as Mitsui Chemicals, Inc. and Mitsui Petrochemical Industries, Ltd. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Throughout his career, Shichijyo has collaborated with talented individuals, including Kiyofumi Muro and Kazuhiro Yamada. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their respective fields.
Conclusion
Shiro Shichijyo's contributions to the field of optical technology are noteworthy. His innovative patents in wavelength conversion and laser light generation demonstrate his commitment to advancing technology. Through his work, he has made a lasting impact on the industry.