Herbert L Fielding

Title: Herbert L. Fielding: Innovator in Photopolymer Technology

Introduction

Herbert L. Fielding is a notable inventor based in Wilmington, MA (US), recognized for his contributions to the field of photopolymer technology. With a total of 2 patents, he has made significant advancements that enhance the capabilities of holographic imaging.

Latest Patents

Fielding's latest patents include innovative compositions that are pivotal in the creation of high-resolution holograms. One of his patents focuses on photopolymerizable compositions used in holograms. This invention comprises a dye sensitizer, a branched polyethylenimine as a polymerization initiator, and a free radical polymerizable ethylenic unsaturated monomer. The preferred embodiments utilize branched polyethylenimine in combination with lithium acrylate, resulting in dry coatings that can be stored for extended periods before activation for imaging. This combination produces volume holograms with exceptional resolution and diffraction efficiency. Another significant patent addresses the stabilization of holograms. It reveals that volume phase holograms formed by photopolymerization of a polymerizable monomer, such as lithium acrylate, show increased retention of diffraction efficiency when treated sequentially with a zirconium compound and a fatty acid, especially under high humidity conditions.

Career Highlights

Fielding is associated with Polaroid Corporation, where he has applied his expertise in photopolymer technology to develop innovative solutions. His work has contributed to the advancement of imaging technologies, particularly in the realm of holography.

Collaborations

Fielding has collaborated with Richard T. Ingwall, further enhancing the scope of his research and development efforts.

Conclusion

Herbert L. Fielding's contributions to photopolymer technology and holography have established him as a significant figure in the field. His innovative patents continue to influence advancements in imaging technologies.