Rogers J Greenwald

Title: The Innovative Mind of Rogers J Greenwald

Introduction

Rogers J Greenwald is a notable inventor based in Rochester, NY (US). He is recognized for his contributions to photographic technology, particularly in the realm of automatic rangefinding devices. His innovative approach has led to advancements that enhance the functionality of cameras.

Latest Patents

Greenwald holds a patent for an "Automatic rangefinding device for use in a camera." This invention is designed to improve focusing in photographic cameras and similar devices. It utilizes a light source, such as an electronic flash, to direct light toward the subject being photographed. When the reflected flash light reaches a specific level, a quench circuit is activated, terminating the light from the source. A timer measures the time elapsed between the shutter release and the quench signal generation. The measured time interval is then converted into a range signal, which is related to the distance between the device and the subject. This range signal can be used to adjust camera components, such as lenses, or to control visual indicators that provide range readings to the operator.

Career Highlights

Greenwald's career is marked by his work at Eastman Kodak Company, a leader in imaging technology. His role at this prestigious company has allowed him to contribute significantly to the field of photography and imaging.

Collaborations

One of his notable collaborators is Lawrence J Matteson, with whom he has worked on various projects within the company.

Conclusion

Rogers J Greenwald's innovative spirit and contributions to camera technology exemplify the impact of inventors in advancing photographic capabilities. His patent for an automatic rangefinding device showcases his commitment to enhancing user experience in photography.