David F Holmes

Title: David F. Holmes: Innovator in Optical Technology

Introduction

David F. Holmes is a notable inventor based in Albuquerque, NM (US), recognized for his contributions to optical technology. He holds 2 patents that showcase his innovative approach to solving complex problems in the field.

Latest Patents

One of his latest patents is the Optical Differential Tilt Sensor. This electrooptical sensor system directly measures the angle between two nearly parallel collimated laser beams. After focusing with a positive lens, the beams pass through a photoelastic modulator, a quarter wave retardation plate, and two polarizers. The beams then hit a lateral cell position sensor. Electrical signals from the lateral cell are processed with special electronics to yield a voltage that is proportional to the angular difference between the two beams. This sensor measures extremely small angles and operates at a high bandwidth, with its primary application being in the control of phased array optical telescopes.

Another significant patent is the Interferogram Synthesization Method and Apparatus. This invention allows for real-time presentation and evaluation of any selected interferogram by electronically simulating optical aberration patterns and displaying them on a cathode ray tube (CRT). The optical aberration patterns include PISTON, X and Y TILT, DEFOCUS, SPHERICAL, COMA, and ASTIGMATISM. The aberration patterns are generated electronically in response to the CRT beam sweep drive signal and are displayed as a function of CRT beam intensity. Evaluation of an unknown interferogram is accomplished by varying aberration pattern combinations and coefficients until a substantial match with the unknown interferogram is achieved.

Career Highlights

David F. Holmes works for the United States of America as represented by the Secretary of the Air Force. His work has significantly impacted the field of optical technology, particularly in applications related to aerospace and advanced imaging systems.

Collaborations

He has collaborated with notable coworkers, including Christopher R. DeHainaut and John D. Gonglewski, contributing to various projects that enhance the capabilities of optical systems.

Conclusion

David F. Holmes is a distinguished inventor whose work in optical technology has led to significant advancements in the field. His patents reflect a deep understanding of complex optical systems and their applications.