公开(公告)号：US20250164673A1

公开(公告)日：2025-05-22

申请号：US18841431

申请日：2023-04-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Sean M. Sweetnam ,  Andrew C. Smith ,  Stephen P. Maki ,  David J. Rowe ,  Timothy J. Hebrink ,  Daniel M. Pierport ,  Kevin W. Gotrik ,  Mark D. Weigel ,  James A. Phipps ,  Kevin D. Hagen ,  Mark B. O'Neill

IPC: G02B5/08

Abstract: Light shielding articles are provided. Light shielding articles include a first multilayer optical film comprised of alternating first and second polymeric optical layers collectively reflecting at an incident light angle of at least one of 0°, 15°, 30°, 45°, 60°, or 75°, an average of at least 70, 80, 90, or 95 percent of incident visible light over at least a wavelength range from 400 nanometers (nm) to 700 nm. The light shielding articles further include either a second multilayer optical film or a barrier coating disposed on the first multilayer optical film. The light shielding article transmits at an incident light angle of at least one of 0°, 15°, 30°, 45°, 60°, or 75°, an average of at least 70, 80, 90, or 95 percent of incident radio frequency waves in at least one wavelength range from 1 mm to 10 mm, 10 mm to 100 mm, or 100 mm to 1000 mm. Additionally, an electromagnetic receiver and/or emitter is provided that includes a light shielding article according attached to at least a portion of the electromagnetic receiver and/or emitter.