Granted Patent
B2
US 11,988,858 · App. 17/939,183 · Granted May 21, 2024
Optical film device
Inventors:
Robert M. Jennings (Shoreview, MN); Jo A. Etter (Stillwater, MN); Susan L. Kent (Shorewood, MN); Erin A. McDowell (Afton, MN); Timothy L. Wong (West St. Paul, MN); Zhisheng Yun (Sammamish, WA)
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
View Patent ↗
Loading inventors, assignments & file history…
Abstract
A reflective polarizing imaging lens includes at least one optical film having an active area that is curved in two orthogonal directions. Edges of the optical film are arranged to form seams between segments of the optical film in the active area of the reflective polarizing imaging lens.
Claims (2)
1. A device, comprising:
at least one optical film and having an active area that is curved in two orthogonal directions such that the active area has a total curvature, C, greater than 0.1, the active area having a minimum pass band edge, λ Emin , a maximum pass band edge, λ Emax , an average pass band edge, λ ave , wherein a variation in upper pass band edge, (λ Emax −λ Emin )/λ Eave , in the active area is less than ln[1+(12/π)C]/20.
Continuity (3)
Division
15733257
Provisional Application
62632033
· Feb 19, 2018
Cited By (1)