Location History:
- Itabashi-ku, JP (2008 - 2011)
- Tokyo, JP (1990 - 2020)
- Tokyo-to, JP (1998 - 2020)
Company Filing History:
34 out of 1,033 
5 out of 526 
1 out of 153 Years Active: 1990-2020
Areas of Expertise:
Title: Inventor Spotlight: Masahiro Ohishi
Introduction
Masahiro Ohishi is a renowned inventor based in Tokyo, Japan. With an impressive portfolio of 40 patents, he has significantly contributed to the fields of electro-optics and surveying instruments. His innovative designs play a crucial role in enhancing measurement accuracy in various applications.
Latest Patents
Among his latest inventions, Ohishi has developed an Electro-Optical Distance Meter. This advanced device includes a light source that emits distance measuring light and an internal reference optical system designed to lead part of this light to a photodetector. The system also features an arithmetic processing unit that calculates distance based on the light receiving results. The internal reference optical system incorporates a condenser lens, a scattering plate, and an optical fiber, allowing for precise measurements.
Another notable invention is a state-of-the-art Surveying Instrument. This tool is equipped with a light emitting section that produces distance measuring light characterized by a concentrated intensity at the center, which gradually decreases toward the edges. The instrument allows for both prism-mode and non-prism-mode measurements. It integrates a sophisticated optical system, complete with an aperture diaphragm, ensuring accuracy during the distance-measurement process.
Career Highlights
Masahiro Ohishi has had a remarkable career, notably working with Topcon Corporation, a leading company in precision measurement instruments. His experience in this innovative environment has significantly influenced his development of cutting-edge technologies and patents.
Collaborations
Throughout his career, Ohishi has collaborated with other notable inventors, including Fumio Ohtomo and Hiroshi Koizumi. These partnerships have fostered an environment of shared creativity and innovation, contributing to the success of their respective inventions and patents.
Conclusion
Masahiro Ohishi stands out as a prominent figure in the field of invention, particularly in the development of electro-optical and surveying technologies. His extensive patent portfolio, notable collaborations, and impactful contributions continue to influence advancements in measurement technology. As a dedicated inventor, Ohishi exemplifies the spirit of innovation, paving the way for future advancements.