Optical assembly

US11693168B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Gregg A. Ambur · River Falls, US
• Benjamin G. Sonnek · Mahtomedi, US
• Jo A. Etter · Stillwater, US
• Timothy L. Wong · Windom, US
• Thomas P. Klun · Lakeland, US
• Richard J. Pokorny · Maplewood, US
• Benjamin R. Coonce · South St. Paul, US
• Douglas S. Dunn · Maplewood, US
• Henry A. Kostalik, IV · Minneapolis, US
• Christopher S. DeGraw · Inver Grove Heights, US
• John R. Jacobson · Newport, US
• Chunjie Zhang · Louisville, US

Key dates

• Filing date: Oct 3, 2018
• Grant date: Jul 4, 2023
• Expiry date: Jun 2, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/285
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical assembly including an optical element insert molded directly onto an optical stack is provided. The optical stack includes an optical film and may include a liner with the optical film being disposed between the optical element and the liner. The liner, if included, is removable from the optical film without substantial damage to the optical film. An outermost layer of the optical film may be diffusion bonded to a major surface of the optical element.