Tadao Uetsuki

Title: Tadao Uetsuki: Innovator in Discharge Lamp Technology

Introduction

Tadao Uetsuki is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of lighting technology, particularly in the development of discharge lamps. With a total of four patents to his name, Uetsuki's work has had a lasting impact on the industry.

Latest Patents

One of Uetsuki's latest patents is for a discharge lamp with two voltage levels. This innovative lighting device includes a first voltage source of high voltage capable of increasing lamp current, with the voltage value being sequentially variable. It also features a second voltage source of low voltage that can decrease the lamp current, also with a sequentially variable voltage value. The lighting connection of the first and second voltage sources to a discharge lamp is alternately changed over for stable lighting. This design minimizes the need for current limiting elements and effectively improves the response to variations in outputs over a wide range, as well as reducing any radiant noise.

Another significant patent is for an electrodeless discharge lamp. This lamp includes a tube coated on the inner surface with a fluorescent material and filled with mercury vapor and a rare gas. The gas provides excitation luminescence of the same color series as the luminous color of the fluorescent material. This innovative design allows the lamp to maintain luminescence over a wide ambient temperature range, with the rare gas providing luminescence of a selected color at lower temperatures, while the mercury vapor and fluorescent material work together to provide luminescence in the middle and higher temperature ranges.

Career Highlights

Uetsuki is currently employed at Matsushita Electric Works, Ltd., where he continues to innovate in the field of lighting technology. His work has been instrumental in advancing the capabilities and efficiency of discharge lamps.

Collaborations

Throughout his career, Uetsuki has collaborated with notable coworkers such as Shin Ukegawa and Masaki Shinomiya. These collaborations have contributed to the development of cutting-edge technologies in the lighting industry.

Conclusion

Tadao Uetsuki's contributions to discharge lamp technology exemplify his innovative spirit and dedication to advancing lighting solutions. His patents reflect a deep understanding of the complexities involved in creating efficient and effective lighting devices.