Location History:
- Ishikari-machi, Ishikari-gun, Hokkaido, JP (1987)
- Sapporo-shi, JP (2003 - 2005)
Company Filing History:
1 out of 127 
1 out of 13 
3 out of 833,002 Years Active: 1987-2005
Title: Innovations by Issei Sasaki in Optical Fiber Technology.
Introduction
Issei Sasaki is a notable inventor based in Sapporo-shi, Japan. He has made significant contributions to the field of optical fiber technology, holding three patents that showcase his innovative approach to measuring the internal refractive index of optical fiber preforms.
Latest Patents
One of his latest patents is titled "Method and apparatus for measuring internal index of refraction of preform of optical fiber." This invention relates to a method and system for measuring the internal refractive index of an optical fiber preform with high precision. The internal refractive index is measured from the state of bending of a light ray passing across the optical fiber preform. This allows for the determination of the refractive index distribution based on the angle of bending of the light ray, calculated from a specific relation between the light ray's start position and detection position. Another significant patent is the "Method of measuring distribution of internal reactive index for optical fiber preform and measuring device." This patent describes a process for measuring the internal refractive index distribution of an optical fiber preform that has an uneven internal refractive index distribution. A picture image is placed at one side of the optical fiber preform, and a deflected picture is photographed through the preform using a photographing unit on the opposite side. The internal refractive index distribution is then measured according to the deflection function obtained from the analysis of the deflected picture.
Career Highlights
Throughout his career, Issei Sasaki has worked with various companies, including Seiko Instruments & Electronics Ltd. His work has significantly impacted the development of optical fiber technologies, enhancing the precision and efficiency of measurements in this field.
Collaborations
Issei Sasaki has collaborated with Fujio Kato, contributing to advancements in optical fiber technology through their combined expertise.
Conclusion
Issei Sasaki's innovative patents and career achievements highlight his important role in the field of optical fiber technology. His work continues to influence advancements in this critical area of research and development.