Toshio Fukahori

Title: Toshio Fukahori: Fiber-Optic Sensing and Rotary-Joint Inventions.

Introduction

Toshio Fukahori is an inventor associated with Hitachi, Japan. His work includes inventions in fiber-optic sensing and optical rotary-joint technology. He is credited with 3 patents.

Latest Patents

Fukahori’s listed patents include a fiber-optic distributed temperature sensor system. The invention uses Raman-scattered light and optical time-domain reflectometry (OTDR) to measure temperature along a sensor fiber. An optical wavelength-division demultiplexer and filters separate light in a selected wavelength range and direct it to a detector for measurement.

Another listed invention is a multi-port fiber-optic rotary joint. It uses a trapezoid prism, rhomboid prisms, and a speed-change gear mechanism to transmit optical signals between rotating and stationary components. The mechanism rotates the trapezoid prism at half the angular velocity of the rotating member, while paired convergent lenses and optical fibers guide light through the assembly.

Career Highlights

The supplied career information associates Fukahori with Hitachi Cable, Inc. and The Tokyo Electric Power Company, Incorporated. His listed inventions reflect applications of optical technology to distributed temperature measurement and the transfer of light across rotating interfaces.

Collaborations

Fukahori’s listed coworkers include Hitoshi Morinaga and Hideyuki Takashima.

Conclusion

Toshio Fukahori’s patent record highlights contributions to fiber-optic sensing and multi-port optical rotary joints, alongside professional associations with Hitachi Cable and The Tokyo Electric Power Company.