Joseph H Apfel is a notable inventor based in Santa Rosa, CA (US). He has made significant contributions to the field of optical coatings, holding a total of 3 patents. His work focuses on enhancing the performance and durability of optical devices through innovative materials and designs.

Latest Patents

One of his latest patents is for fluorine-containing abrasion-resistant optical thin film devices. This invention modifies the optical properties and physical attributes of metal oxides and nitrides by incorporating fluorine into the deposition mixture. The addition of fluorine improves various characteristics such as absorption, reflectance, transmittance, and transparency while maintaining durability. These fluorine-modified films are applicable in optical designs, including wear-resistant coatings for laser scanner windows and ophthalmic applications.

Another significant patent is for a multilayer mirror with maximum reflectance. This invention utilizes a dielectric stack with multiple layers of materials that have varying refractive indices. The design optimizes the thickness of these layers to maximize reflectance, leading to enhanced performance in optical applications.

Career Highlights

Joseph H Apfel is associated with Optical Coating Laboratory, Inc., where he continues to innovate in the field of optical coatings. His work has contributed to advancements in optical technology, making significant impacts in various applications.

Collaborations

He has collaborated with notable colleagues such as Charles K Carniglia and Nancy Lee Yamasaki, further enhancing the innovative efforts within his field.

Conclusion

Joseph H Apfel's contributions to optical coatings through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence the development of advanced optical devices.