Company Filing History:
Years Active: 1991-1992
Title: The Innovations of Robert W. Johnson
Introduction
Robert W. Johnson is a notable inventor based in Los Altos, California. He has made significant contributions to the field of laser technology, particularly in medical applications. With a total of 2 patents, his work has advanced the efficiency and practicality of laser devices used in photocoagulation.
Latest Patents
One of Johnson's latest patents is a diode laser device for photocoagulation of the retina. This innovative device utilizes a diode laser, which is more efficient than traditional ion or dye lasers. The diode laser's compact design allows it to be powered by standard 110V wall sockets, eliminating the need for high-power, three-phase sockets. This advancement enables the device to be brought directly into the operating room, making it ideal for transcutaneous delivery. The emitted light from the diode laser diverges rapidly, and Johnson's design includes an optical system to shape the elliptical beam into a circle before it is coupled to the fiber optic cable.
Another significant patent by Johnson is an apparatus for controlling pulse energy in a Q-switched laser system. This system includes a resonant cavity and a gain medium, with a controllable pump energy source that responds to an energy control signal. The detector generates a signal based on the population inversion in the gain medium, allowing for precise control of pulse energy. This innovation ensures a constant level of population inversion, achieving a specified pulse energy for each pulse, regardless of the Q-switch's switching rate.
Career Highlights
Robert W. Johnson is currently associated with Spectra-Physics GmbH, a company known for its advancements in laser technology. His work has been instrumental in developing practical solutions for medical laser applications.
Collaborations
Johnson has collaborated with notable colleagues, including Ralph Bradford Bettman and Acle V. Hicks. Their combined expertise has contributed to the success of various projects in the field of laser technology.
Conclusion
Robert W. Johnson's contributions to laser technology, particularly in medical applications, have made a significant impact on the field. His innovative patents demonstrate his commitment to advancing technology for practical use in healthcare.