Location History:
- Tokyo, JP (2006)
- Yokohama, JP (2005 - 2007)
Company Filing History:
Years Active: 2005-2007
Title: **The Innovative Mind of Tsutomu Nakashima**
Introduction
Tsutomu Nakashima, an esteemed inventor based in Yokohama, Japan, has made significant contributions to the field of optical technology. With a remarkable portfolio of 13 patents, Nakashima's work focuses on enhancing image display systems through innovative techniques.
Latest Patents
Among Nakashima's most recent patents are two cutting-edge inventions that demonstrate his expertise. The first is an "Optical unit and projection-type image display apparatus using the same." This inventive technique addresses the issue of temperature rise in projection-type image display systems, ensuring high image quality. The innovation revolves around a polarization split device strategically placed in a medium with a refractive index greater than one. The device features a polarization split surface with a diffractive grating structure that effectively polarizes and splits light. An air layer in contact with this surface further enhances its functionality.
The second patent concerns a "Projection type image display apparatus using reflective image display elements, reflective polarizing plates and auxiliary analyzers." This compact and lightweight apparatus is designed to provide high brightness without the contrast issues typically associated with light leakage during black image displays. The invention utilizes reflection polarizing plates that act as polarizers by leveraging their grating function in specific orientations, strategically positioned in the light path to optimize performance.
Career Highlights
Tsutomu Nakashima has cultivated a distinguished career at Hitachi, Ltd., where he has developed numerous innovations in optical technology. His contributions have not only advanced the field but have also set standards for high-performance display systems.
Collaborations
Throughout his career, Nakashima has collaborated with notable colleagues, including Masahiko Yatsu and Satoshi Ouchi. This teamwork has enabled the exchange of ideas and fostered an environment where groundbreaking innovations can flourish, further enhancing the quality of their shared projects.
Conclusion
In summary, Tsutomu Nakashima stands out as a prominent figure in the realm of optical technology. His 13 patents reflect his dedication to innovation and high-quality image display solutions. As he continues to push the boundaries of what is possible in projection technology, Nakashima’s contributions will undoubtedly leave a lasting impact on the industry.