Location History:
- Itsukaichi, JP (1990)
- Nishitama, JP (1993)
- Hinodemachi, JP (1994)
- Akiruno, JP (1999)
- Tokyo, JP (1997 - 2007)
Company Filing History:
Years Active: 1990-2007
Title: The Innovative Contributions of Masahisa Kosaka
Introduction: Masahisa Kosaka, an accomplished inventor based in Tokyo, Japan, holds an impressive portfolio of 16 patents. His expertise lies in the field of plastic lens technology, where his innovative approaches have made significant impacts on the industry.
Latest Patents: Among his notable inventions is a patent for a plastic lens and a process for preparing the lens. This advanced plastic lens is designed to absorb ultraviolet light with a wavelength of approximately 400 nm, effectively suppressing coloration. The production process involves a unique composition that includes diethylene glycol bisallylcarbonate as the main lens material monomer, an organic peroxide-based polymerization initiator, and a specific cobalt compound. Additionally, the lens incorporates ultraviolet light absorbents like 2-hydroxy-4-octyloxy-benzophenone. The innovative process for creating these lenses encompasses mixing various components and polymerizing the fluid in a mold to achieve high-quality plastic lenses featuring enhanced refractive index and Abbe's number without compromising essential physical properties such as mechanical strength, impact resistance, and transparency.
Career Highlights: Masahisa Kosaka's career is marked by his role at Hoya Corporation, a leading company in optics and photonics. Through his work, he has contributed to advancements in lens technology, affirming his position as a key figure in the field.
Collaborations: Throughout his career, Kosaka has collaborated with talented coworkers, including Yukio Kageyama and Shinsuke Itoh. Together, they have shared insights and expertise that have fueled innovative developments in lens technology.
Conclusion: As a prolific inventor, Masahisa Kosaka's contributions to plastic lens innovation have set benchmarks in the industry. His patented technologies continue to pave the way for new advancements, enhancing the performance and functionality of optical products in various applications.