Akio Ohishi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical devices, holding a total of 5 patents. His work focuses on advancing technologies that enhance optical information processing and recording.

Latest Patents

Ohishi's latest patents include innovative methods and systems for optical devices. One notable patent is for "Optical device diffraction gratings and a photomask for use in the same." This invention describes a method of fabricating diffraction gratings where a photomask is arranged on a substrate coated with photoresist. Light is incident at an acute angle, creating a bright/dark pattern through interference. Another significant patent is for a "System having a function of reproducing optical information." This system utilizes a laser diode with independent pulsating emission for recording and reproducing information, ensuring precise control over the laser pulse period and distance to the recording medium.

Career Highlights

Akio Ohishi is currently employed at Hitachi, Ltd., where he continues to develop cutting-edge optical technologies. His work has been instrumental in enhancing the capabilities of optical information systems, contributing to advancements in various applications.

Collaborations

Ohishi has collaborated with notable colleagues, including Shinji Tsuji and Hiroyoshi Matsumura. Their combined expertise has fostered innovation and progress in the field of optical devices.

Conclusion

Akio Ohishi's contributions to optical technology through his patents and work at Hitachi, Ltd. highlight his role as a key innovator in the industry. His inventions continue to influence the development of advanced optical systems.

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