Kenneth Francis Walsh

Title: The Innovations of Kenneth Francis Walsh

Introduction

Kenneth Francis Walsh is a notable inventor based in Lima, NY (US). He has made significant contributions to the field of optical information processing, holding a total of 2 patents. His work focuses on advancing technologies that enhance data storage and processing capabilities.

Latest Patents

Walsh's latest patents include a phase-shifting element for optical information processing storing systems. This invention involves an optical information processor and the storage of pixelated data patterns in a Fourier plane of a lens, achieved through a plurality of optical elements operating with a spatial light modulator. A laser light source illuminates a data pattern with a wavefront created by a phase mask to effect a phase shift. The optical information can be effectively processed or stored, particularly in a holographic data storage system. This system contains illuminated and dark regions, including a multi-fold phase shift mask, which affects a linear and non-random shift of an image. The image is stored on a holographic storage medium, with a spatial light modulator positioned between the input location for the optical data and the storage medium. The phase shift is executed in the Fourier plane. Additionally, beam shaping optics for diverging illumination are utilized, such as a lens that shapes a diverging laser diode beam, particularly circularizing and collimating, or diverging, or converging the beam. The lens may be part of an optical system or a laser diode assembly, and it is constituted of a body with opposite ends spaced from each other. The surfaces of the ends may be toric, with the toric centers coinciding with the optical axis. The surfaces also feature curvature profiles that circularize and collimate, or diverge, or converge the beam. One of the surfaces has a correction profile based on Zernike polynomials, which reduces wavefront error of the beam exiting the lens. This correction profile also accounts for the offset of the laser diode from the optical axis, thereby increasing misalignment tolerances for beam to lens centering. Furthermore, the curvature profiles may include corrections for astigmatism in the beam shape produced by the laser diode. The body of the lens can be a single element or multiple elements integrated into one body.

Career Highlights

Throughout his career, Kenneth Walsh has worked with prominent companies, including Rochester Photonics Corporation and International Business Machines Corporation (IBM). His experience