Robert D Reasenberg

Title: The Innovations of Robert D. Reasenberg

Introduction

Robert D. Reasenberg is a notable inventor based in Lexington, Massachusetts. He is recognized for his significant contributions to the field of precision measurement technology. His innovative work has led to the development of a unique system for measuring distances with remarkable accuracy.

Latest Patents

Reasenberg holds a patent for a system designed to measure the distance between two points using a variable. This interferometric gauge allows for high precision absolute and incremental measurements of distances up to at least 100 meters. An accuracy of 0.02 Angstrom has been demonstrated, which is free of the approximately 10 Angstrom polarization-leakage errors commonly found in conventional gauges. The absolute distance measurement does not require any a priori information, and it eliminates the need for multiple synthetic wavelengths. The gauge can also function as a sensor for a null servo, and there are reduced-cost versions available with lower accuracy. Additionally, the gauge can utilize a resonant cavity for enhanced sensitivity and can be constructed without transmissive elements in the measured path. The readout can be provided in various forms, including frequency, analog electrical signals, or a digital count of an integral number of wavelengths. The design employs a high-sensitivity null sensor, and feedback to an optical frequency shifter maintains the null condition, allowing for a highly sensitive distance readout.

Career Highlights

Reasenberg is affiliated with the Smithsonian Institution, where he continues to contribute to advancements in measurement technology. His work has been instrumental in enhancing the accuracy and reliability of distance measurement systems.

Collaborations

Throughout his career, Reasenberg has collaborated with esteemed colleagues, including James D. Phillips and Martin C. Noecker. These collaborations have further enriched his research and development efforts.

Conclusion

Robert D. Reasenberg's innovative contributions to precision measurement technology have established him as a key figure in the field. His patented system for measuring distances showcases his commitment to advancing measurement accuracy and reliability.