Location History:
- Tsukuba, JP (2003 - 2012)
- Hitachinaka, JP (2008 - 2013)
- Ushiku, JP (2002 - 2018)
- Ibaraki, JP (2011 - 2019)
Company Filing History:
15 out of 1,622 
4 out of 28,577 
1 out of 129 Years Active: 2002-2019
Title: Innovations and Contributions of Kazuhiko Kawasaki
Introduction: Kazuhiko Kawasaki, an accomplished inventor based in Ushiku, Japan, has made significant contributions to the field of optical measurements. With a remarkable portfolio of 20 patents, he has demonstrated his innovative prowess in developing advanced technologies that enhance measurement techniques.
Latest Patents: Among his latest innovations, the phase shift interferometer stands out. This device is designed to measure the shapes of various objects by capturing multiple images of interference fringes while altering the phases. The phase shift interferometer utilizes the polarization of light to create a 90° phase difference between the interference fringes. By employing a conventional phase shift method, it mechanically displaces a reference surface or optical path to achieve the desired phase shifts. The phases from the captured images are calculated independently, and an average of the results is determined, providing precise measurements.
Another notable patent from Kazuhiko Kawasaki is his laser frequency measurement method using an optical frequency comb. This method involves measuring the frequency of a laser by analyzing the frequency of a beat signal generated from the interference between the optical frequency comb and the laser. By adjusting either the repetition frequency or the CEO frequency of the optical frequency comb, the beat signal can be manipulated to reach a predetermined value, allowing for accurate measurement of lasers with significant frequency variations and low stability.
Career Highlights: Kazuhiko Kawasaki's professional journey includes notable tenures at reputable companies such as Mitutoyo Corporation and Ricoh Company, Ltd. His work in these organizations has laid the groundwork for his continued success as an inventor, enabling him to develop pioneering technologies that impact various industries.
Collaborations: Throughout his career, Kawasaki has collaborated with esteemed colleagues, including Yoshimasa Suzuki and Satoshi Ueda. These partnerships have fostered a dynamic exchange of ideas, further enhancing the innovation process and resulting in groundbreaking inventions that push the boundaries of optical measurement technology.
Conclusion: Kazuhiko Kawasaki's contributions to the realm of inventions and patents highlight his exceptional skills and dedication to innovation. With 20 patents to his name, his latest developments in phase shift interferometry and laser frequency measurement showcase his expertise and commitment to advancing measurement technologies. As he continues to innovate, Kawasaki remains an influential figure in the field of optical engineering, inspiring future generations of inventors.