Optical construction and display system

US11885999B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Bharat R. Acharya · Woodbury, US
• Robert D. Taylor · Boulder, US
• Joseph P. Attard · Woodbury, US
• Benjamin J. Forsythe · Stillwater, US
• David T. Yust · Woodbury, US
• Matthew E. Sousa · Rosemount, US
• Jason S. Petaja · Hudson, US
• Anthony M. Renstrom · Maplewood, US
• William Blake Kolb · Windom, US
• Matthew S. Cole · Woodbury, US
• Matthew S. Stay · Minneapolis, US
• Matthew R.D. Smith · Woodbury, US
• Jeremy O. Swanson · Woodbury, US
• Tri D. Pham · Woodbury, US
• David A. Rosen · North St. Paul, US
• Qunyi Chen · Okabena, US
• Lisa A. DeNicola · Okabena, US
• Quinn D. Sanford · Ellsworth, US
• Carl A. Stover · Okabena, US
• Lin Zhao · Woodbury, US
• Gilles J. Benoit · Minneapolis, US

Key dates

• Filing date: May 4, 2021
• Grant date: Jan 30, 2024
• Expiry date: May 4, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V40/1318
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical construction includes a reflective polarizer and an optically diffusive film disposed on the reflective polarizer. The reflective polarizer includes an outer layer including a plurality of first particles partially protruding from a first major surface thereof to form a structured major surface. A first optically diffusive layer is conformably disposed on the structured major surface. The optically diffusive film includes a second optically diffusive layer including a plurality of nanoparticles dispersed therein, and a structured layer including a structured major surface. For a substantially normally incident light and a visible wavelength range from about 450 nm to about 650 nm and an infrared wavelength range from about 930 nm to about 970 nm, the second optically diffusive layer has an average specular transmittance Vs in the visible wavelength range and an average specular transmittance Is in the infrared wavelength range, where Is/Vs≥2.5.