Location History:
- Hanamaki, JP (1994 - 1998)
- Iwate, JP (2007 - 2014)
Company Filing History:
9 out of 28,544 
5 out of 11 Years Active: 1994-2014
Title: Kazuhiro Umeki: Innovator in Optical Technologies
Introduction
Kazuhiro Umeki is a prominent inventor based in Iwate, Japan. He has made significant contributions to the field of optical technologies, holding a total of 12 patents. His work focuses on the development of advanced optical elements and devices that enhance the performance of optical systems.
Latest Patents
Umeki's latest patents include innovative designs such as an optical element, polarization filter, optical isolator, and optical apparatus. One of his notable inventions is an optical element that transmits incident light with a specific polarization direction primarily through 0-order transmission while diffracting light with a perpendicular polarization direction. This optical element features a periodic structure with a period equal to or greater than the wavelength of the incident light, incorporating first and second subwavelength concave-convex structures that are formed perpendicularly adjacent to each other. These structures are designed to have the same effective refraction index for the specific polarization direction and a phase difference of π for the perpendicular polarization.
Another significant patent involves an optical pickup and optical information processing device. This device includes an aberration correction unit equipped with a phase shifter surface, which has rectangular or staircase-like steps arranged concentrically around the optical axial center. These steps vary in height and are designed to correct spherical aberration for optical recording media, ensuring precise focusing of light beams.
Career Highlights
Throughout his career, Kazuhiro Umeki has worked with notable companies such as Ricoh Company, Ltd. and Ricoh Optical Industries Co., Ltd. His experience in these organizations has allowed him to develop and refine his expertise in optical technologies, contributing to the advancement of the field.
Collaborations
Umeki has collaborated with esteemed colleagues, including Hideaki Hirai and Toshimichi Nasukawa. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Kazuhiro Umeki's contributions to optical technologies through his patents and collaborations highlight his role as a leading inventor in the field. His innovative designs continue to influence advancements in optical systems and applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.