John D Leyland

Title: The Innovations of John D Leyland

Introduction

John D Leyland is a notable inventor based in Grotton, Oldham, GB. He has made significant contributions to the field of electronics, particularly in the design of cathode ray tube (CRT) technology. His innovative approach has led to the development of a unique patent that enhances the functionality of electron gun assemblies.

Latest Patents

John D Leyland holds a patent for "Beam focusing means for a CRT electron gun assembly." This invention comprises a cathode, a control grid, a first anode, a second anode, and a third anode. The design includes a beam width limiting aperture in the first anode. In one example, the current modulating voltage applied to the grid is 0 to -50V, while the voltage applied to the first anode is +5 kV. The focus voltage applied to the second anode is +500V, and the EHT voltage applied to the third anode is +25 kV. The main focusing lens is formed by the second and third anodes, with the spacing of the first and third anodes being small, allowing the focusing effect to depend significantly on the voltage of the first anode. The high field strength between the grid and first anode, combined with the high first voltage, produces a small crossover.

Career Highlights

Throughout his career, John D Leyland has demonstrated a commitment to advancing technology in the electronics sector. His work has been instrumental in improving the performance and efficiency of CRT technology, which has been widely used in various applications.

Collaborations

John D Leyland has collaborated with fellow inventor John R Banbury, contributing to the development of innovative technologies in their field.

Conclusion

John D Leyland's contributions to the field of electronics, particularly through his patent on CRT electron gun assemblies, highlight his innovative spirit and dedication to technological advancement. His work continues to influence the industry and inspire future inventors.