Shinichi Irisawa

Title: Shinichi Irisawa: Innovator in Mercury-Free Discharge Technology

Introduction

Shinichi Irisawa is a prolific inventor based in Shizuoka, Japan, known for his extensive contributions to the field of lighting technology. With a remarkable portfolio consisting of 37 patents, Irisawa has established himself as a significant figure in the development of mercury-free discharge lamps. His innovative designs not only enhance performance but also promote environmental sustainability.

Latest Patents

Irisawa's recent patents showcase his ingenuity and commitment to advancing lighting technology. One of his notable inventions is the arc tube for a discharge lamp device. This mercury-free arc tube features a sealed glass chamber that contains metallic halide for main light emission and rare gas, which are pinch-sealed at both ends. The electrode bars, positioned opposite each other, have tips formed of a single crystal. This design allows the crystal at the electrode tips to grow with repeated ON/OFF cycling, while maintaining the electrode end face's shape, thus preventing luminescent spot decline during discharge.

Another significant patent is the mercury-free discharge bulb for vehicles. This bulb comprises an arc tube created from a ceramic tube, filled with light-emitting material and starting xenon gas, at filling pressures ranging from about 6 atm to 18 atm. The design includes thin tube portions at each end and opposing electrodes within the light-emitting portion. The light-emitting material incorporates sodium halide and rare-earth metal halide, ensuring optimal performance with minimal environmental impact.

Career Highlights

Throughout his career, Shinichi Irisawa has made significant strides in the field of lighting technology. He has worked with prestigious companies such as Koito Manufacturing Company, Ltd. and A.L.M.T. Corporation. His expertise and innovative mindset have played a crucial role in enhancing the efficiency and sustainability of lighting solutions.

Collaborations

Irisawa's journey has also been marked by valuable collaborations with esteemed colleagues such as Takeshi Fukuyo and Yoshitaka Ohshima. Their collective efforts have fostered innovative breakthroughs and further solidified Irisawa's reputation as a leading inventor in the industry.

Conclusion

Shinichi Irisawa is a remarkable innovator whose work in mercury-free discharge technology continues to shape the future of environmentally friendly lighting solutions. His patents represent not only personal achievement but also a commitment to advancing technology with a focus on sustainability. As the demand for such innovations grows, Irisawa's contributions will undoubtedly have a lasting impact on the industry.