Company Filing History:
12 out of 27,375 
2 out of 16,453 
Years Active: 1998-2012
Title: Kazuyuki Nakashima: Innovator in Surface Lighting Technology
Introduction
Kazuyuki Nakashima, based in Fukuoka, Japan, stands out as a prolific inventor with a remarkable portfolio of 14 patents. His contributions to the field of lighting technology have paved the way for advancements in portable devices and displays, making him a significant figure in the innovation landscape.
Latest Patents
Nakashima's latest invention, a surface lighting device, exemplifies his dedication to improving display quality. This innovative device comprises a single light source and a light-guide board that features both a light-guiding section and a light-emitting section. Notably, the shorter side of the light-guiding section does not exceed 8 mm, while the light-emitting section covers an area of at least 500 mm². Key features of this patent include:
1. A minimum to maximum luminance ratio of at least 0.3.
2. An average luminance ranging from 1 cd/m² to 200 cd/m².
3. A change in luminance per unit length that does not exceed (average luminance) × 100 cd/m².
By employing multiple light-emitting elements within a single light source, the device is capable of producing a diverse range of colors. The structural design optimizes the light source, light-guide board, and holder to minimize uneven luminance, leading to an enhanced display quality for LCD units and portable terminals.
Career Highlights
Throughout his career, Kazuyuki Nakashima has made significant contributions while working with leading companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His innovative spirit and technical expertise have made a lasting impact on the industries surrounding lighting and electronic devices.
Collaborations
Nakashima has had the opportunity to collaborate with esteemed colleagues, including Sumio Tate and Seiji Manabe. These partnerships have further enriched his inventive journey and contributed to the development of cutting-edge technologies.
Conclusion
Kazuyuki Nakashima's contributions to innovations in lighting technology illustrate the profound impact that dedicated inventors can have on modern conveniences. With his latest patents, he continues to influence the future of display systems, reinforcing his position as a key innovator in the field.