Ranajit K Datta

Title: Ranajit K. Datta - Innovator in Metal Halide Arc Discharge Lamp Technology

Introduction

Ranajit K. Datta, based in Cleveland, OH, is a prolific inventor known for his contributions to the field of arc discharge luminary technology. With a total of four patents to his name, Datta has demonstrated a commitment to innovation that is both practical and transformative, particularly in his work with metal halide lamps.

Latest Patents

Among his latest innovations, one notable patent involves a protective metal silicate coating for a metal halide arc discharge lamp. This invention describes an arc tube of fused silica that includes a fill made up of sodium halide, alongside additional metal halides and an inert starting gas. The unique aspect of this arc tube is the vitreous and light-transmissive metal silicate coating composed of metals such as scandium, yttrium, and rare earth elements. This coating significantly mitigates the loss of the metallic components within the fill, thereby preventing the buildup of free halogen in the arc tube.

Another significant patent introduced by Datta pertains to an improved sealing composition derived from alumina. This composition, containing 47 weight percent Al2O3, 37 weight percent CaO, and 16 weight percent BaO, has been optimized to maintain closer thermal expansion characteristics with alumina ceramics. Moreover, the inclusion of B2O3 enhances its wetting and flow properties, allowing for a lower liquidus temperature compared to previous compositions.

Career Highlights

Datta has played a pivotal role in the development of advanced lighting technologies during his tenure at General Electric Company. His work in enhancing the performance and durability of metal halide lamps has had a lasting impact on the industry, making lighting solutions more reliable and efficient for consumers.

Collaborations

Throughout his career, Datta has collaborated with esteemed colleagues such as Charles I. McVey and John E. White. These partnerships have undoubtedly added value to his inventive processes, fostering an environment of shared knowledge and innovative thinking.

Conclusion

Ranajit K. Datta stands as a significant figure in the realm of electrical engineering and lighting technology. His innovative patents reflect not only his technical expertise but also his dedication to pushing the boundaries of what is possible in the field. As lighting technologies continue to evolve, the contributions of inventors like Datta will undoubtedly pave the way for future advancements.