Location History:
- Nagoya, JP (2003)
- Kasugai, JP (1997 - 2023)
Company Filing History:
Years Active: 1997-2025
Title: Innovator Spotlight: Tetsuya Ejiri
Introduction: Tetsuya Ejiri, based in Kasugai, Japan, is a prolific inventor with an impressive portfolio of 34 patents. His innovative work primarily focuses on advanced phosphor elements and illumination devices, contributing significantly to the field of optical technology.
Latest Patents: Tetsuya Ejiri has recently developed several notable patents, including a phosphor element designed to optimize fluorescence emission. This phosphor element features an incident face for excitation light, a reflective face opposite to it, and a unique side face. It effectively converts part of the excitation light into fluorescence and emits it from the incident face, with a designed inclination region that enhances efficiency.
Another notable innovation is his white-light generating device, which efficiently transforms laser light with wavelengths between 280 nm and 495 nm into white light. This device includes a fluorescent body that generates fluorescence with a longer wavelength than the excitation light. The design includes an emission-side end surface that has a larger area than the opposing end surface, further enhanced by an inclined outer peripheral surface that adds versatility to its application.
Career Highlights: Tetsuya Ejiri is currently affiliated with NGK Insulators, Inc., where he applies his expertise in the development of innovative optical solutions. His career is marked by a series of advancements in illumination technology, making him a respected figure in his field.
Collaborations: Throughout his career, Ejiri has worked closely with talented colleagues such as Jungo Kondo and Yuichi Iwata. Their collaborative efforts have significantly contributed to the success of their projects and innovations in the realm of optical devices.
Conclusion: As an inventor, Tetsuya Ejiri exemplifies the spirit of innovation, driving advancements in phosphor technology and illumination devices. His contributions not only showcase his expertise and creativity but also the collaborative nature of invention, as he continues to pave the way for new developments in the industry.