Company Filing History:
Years Active: 1985-1993
Title: The Innovations of James W. Howard
Introduction
James W. Howard is a notable inventor based in Natick, MA (US), recognized for his contributions to optical data storage systems. With a total of 10 patents to his name, Howard has made significant advancements in the field of optics and light measurement.
Latest Patents
One of Howard's latest patents is titled "Split lens displaced long from each other along plane of cut." This invention presents a method and apparatus for measuring the focus and tracking of a light beam on a medium in an optical data storage system. The split lens consists of two halves separated along the optical axis and displaced from each other along the plane of the cut. This design allows for the effective focusing of light reflected or refracted from the medium onto a quad-cell, which contains four light sensors arranged in quadrants. The amount of light incident on these quadrants indicates the focus and alignment of the light beam on the medium. Additionally, the apparatus can measure the collimation or distribution of intensity of a light beam. Another aspect of this invention involves the manufacturing process of the split lens, where a lens is sawed into two halves and mounted using a housing that is displaced along the plane of the cut.
Another significant patent by Howard is the "Rotary head actuator for optical disk." This rotary actuator for an optical head features a pair of reflectors mounted on the end of the arm and on the pivot axis, defining an optical path to an optical disk for an external beam directed along the pivot axis. The special arm geometry reduces variable head skew and the consequent image rotation. Furthermore, a multiple platter design incorporates optical switches effectively aligned on the pivot axis.
Career Highlights
Throughout his career, James W. Howard has worked with prominent companies such as Digital Equipment Corporation and Honeywell GmbH. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Howard has collaborated with notable individuals in the field, including Neville K. Lee and David L. Jungkman. These collaborations have likely enriched his work and led to further advancements in his inventions.
Conclusion
James W. Howard's contributions to optical data storage and light measurement technologies have made a significant impact in the field. His innovative patents and collaborations reflect his dedication to advancing optical systems.