This inventor holds 4 USPTO granted patents. Top assignee: Eastman-Kodak Company. Active years: 1981-1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kennebunk, ME (US) (1981 - 1985)
- Rochester, NY (US) (1994 - 1996)
Company Filing History:
2 out of 21,604 
Years Active: 1981-1996
Title: The Innovations of Richard A. Littlefield
Introduction
Richard A. Littlefield is a notable inventor based in Rochester, NY (US). He has made significant contributions to the field of actuator control systems and beam scanning technologies. With a total of 4 patents, his work reflects a commitment to advancing engineering solutions.
Latest Patents
One of his latest patents is the "Self Calibrating Actuator Position Control System." This invention employs a photo interrupter with an optical density gradient segment, which includes additional maximum and minimum density segments. These segments are sensed and sampled by a calibration circuit before each operation of the actuator. This process generates high and low reference calibration values that are applied to a signal scaling circuit, allowing for a position output signal that is linearly proportional to the actuator position.
Another significant patent is the "Light Beam Scanning System Including Piezoelectric Means for Correction." This system features a rotatable element that receives a stationary light beam at successive facets, imparting a scanning motion to the light beam. Any deviations in mechanical or optical performance are corrected using a high-speed beam deflector, which operates in either a closed loop or open loop servo system. The unique design includes a piezoelectric plate and reflecting body structure, ensuring high resonant frequency even with a large glass mirror.
Career Highlights
Richard A. Littlefield is associated with the Eastman Kodak Company, where he has contributed to various innovative projects. His work has been instrumental in enhancing the capabilities of imaging and control systems.
Collaborations
He has collaborated with notable coworkers such as J. Kelly Lee and Michael J. O'Brien, further enriching the innovative environment at Eastman Kodak Company.
Conclusion
Richard A. Littlefield's contributions to actuator control and beam scanning technologies demonstrate his innovative spirit and technical expertise. His patents reflect a deep understanding of engineering principles and a commitment to advancing technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile