This inventor holds 3 USPTO granted patents. Top assignees: Nikon Corporation, Kabushiki Kaisha Toyota Chuo Kenkyusho. Active years: 1999-2007.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kanagawa-ken, JP (1999)
- Chigasaki, JP (2000 - 2007)
Company Filing History:
3 out of 8,998 
1 out of 1,154 
Years Active: 1999-2007
Title: Hiroshi Niikura: Innovator in Optical Technology
Introduction
Hiroshi Niikura is a notable inventor based in Chigasaki, Japan. He has made significant contributions to the field of optical technology, holding a total of 3 patents. His work focuses on methods and units for evaluating and measuring optical properties, which are crucial in various applications, including photolithography.
Latest Patents
One of his latest patents is a "Method for evaluating refractive index homogeneity of optical member." This method involves passing light through an optical member used for photolithography. The optical member is retained by elastic members at multiple positions to measure wave front aberration. By rotating the optical member and measuring the differences in wave front aberration, the refractive index homogeneity can be accurately evaluated using fitting of the Zernike cylindrical function.
Another significant patent is a "Unit for measuring optical properties." This unit includes multiple reflecting surfaces and devices for accurately measuring transmittance, reflectance, and phase changes in optical elements. The design of the reflecting surfaces allows for precise measurements, particularly for thick objects, ensuring that the optical path is optimized for accurate results.
Career Highlights
Hiroshi Niikura has worked with prominent companies in the optical industry, including Nikon Corporation and Toyota Chuo Kenkyusho. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Throughout his career, Niikura has collaborated with notable colleagues such as Yasuhiko Takeda and Atsushi Yanagisawa. These collaborations have further enhanced his work and contributions to the field of optics.
Conclusion
Hiroshi Niikura is a distinguished inventor whose work in optical technology has led to valuable patents and advancements in the industry. His innovative methods and units for evaluating optical properties continue to influence the field significantly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile