Company Filing History:
Years Active: 2020-2021
Title: Nobuo Ohba: Innovator in Image Measurement Technology
Introduction
Nobuo Ohba is a distinguished inventor based in Kanagawa, Japan. He has made significant contributions to the field of image measurement technology, holding three patents that showcase his innovative spirit and technical expertise.
Latest Patents
Ohba's latest patents include an image pick-up device, an image measurement apparatus, a non-contact displacement-detecting device, and a non-contact profile-measuring device. The image measurement apparatus functions as a non-contact profile-measuring device and incorporates an image sensor as an image pick-up device. It features a variable focal length lens, specifically a liquid lens unit, positioned on an optical axis extending from a workpiece to the image sensor. Additionally, a controller is integrated to manage the variable focal length lens and process the images captured by the sensor. Furthermore, the apparatus also serves as a non-contact displacement-detecting device, utilizing similar components for effective measurement.
Another notable invention is the variable focal length lens device, which consists of a lens system whose refractive index varies based on an inputted drive signal. This device is equipped with a resonance-lock controller that synchronizes the drive signal to the resonance frequency of the lens system. The controller adjusts the frequency of the drive signal according to the voltage-current phase difference, enhancing the precision of the lens system.
Career Highlights
Nobuo Ohba is currently employed at Mitutoyo Corporation, a leading company in precision measurement technology. His work at Mitutoyo has allowed him to develop and refine his innovative inventions, contributing to advancements in measurement accuracy and efficiency.
Collaborations
Ohba has collaborated with notable colleagues, including Shiro Igasaki and Koji Kubo. Their teamwork has fostered a creative environment that encourages the development of cutting-edge technologies in the field of image measurement.
Conclusion
Nobuo Ohba's contributions to image measurement technology through his patents and work at Mitutoyo Corporation highlight his role as a key innovator in the industry. His inventions continue to influence advancements in precision measurement, showcasing the importance of innovation in technology.