Roger A Mayr

Title: The Innovative Contributions of Roger A. Mayr

Introduction

Roger A. Mayr is a notable inventor based in Seminole, FL (US). He has made significant contributions to the field of optical lens technology, holding a total of 2 patents. His work focuses on the development of advanced materials and methods for creating high-performance lenses.

Latest Patents

One of Mayr's latest patents is for thermoplastic polyurethane lenses with a specified weight percentage of urethane repeating units. This invention outlines a method of forming thermoplastic polyurethane (TPU) into an optical lens. The suitable TPUs contain urethane (—NHCOO—) repeating units that are present in at least 23% by weight. This range of urethane weights indicates a flexural modulus above 1,400 MPa. The TPUs have refractive indices above 1.54 and Abbe numbers above 27. They also possess glass transition temperatures above about 100 degrees C. The selected TPU can be injection molded to form ophthalmic lenses that are well suited for use in rimless spectacles. These lenses are highly solvent resistant while being readily tintable. Furthermore, the lenses made according to this invention meet FDA 21 CFR 801.41 Impact Requirement and ANSI Z87.1 high velocity impact (HVI) standard.

Another significant patent by Mayr is a method of injection molding thin thermoplastic lenses. This patent discloses methods to injection mold resins, such as polycarbonate, to form solid optical lenses. The lenses produced are ideally suited for use as very thin coating carriers. The method involves closing the mold with a clamp force less than the force exerted on the insert during injection. During the injection process, the mold is allowed to breathe, overcoming many obstacles associated with injection molding very thin lenses. As the injection pressure subsides, the mold begins to close to perform a coining operation, resulting in a strong, high-yield carrier or lens.

Career Highlights

Throughout his career, Roger A. Mayr has worked with prominent companies in the optical industry, including Essilor International and Compagnie Générale d'Optique. His experience in these organizations has contributed to his expertise in lens technology and innovation.

Collaborations

Mayr has collaborated with talented individuals in his field, including Hao Wen Chiu and Hsinjin E Yang. These