US 12,443,055 B2
Bi-focal eyewear lens and eyeglasses including same
Zhisheng Yun, Sammamish, WA (US); Andrew J. Ouderkirk, Kirkland, WA (US); Susan L. Kent, Shorewood, MN (US); Erin A. McDowell, Afton, MN (US); Timothy L. Wong, West St. Paul, MN (US); John D. Le, Woodbury, MN (US); and Michael L. Steiner, New Richmond, WI (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Feb. 15, 2022, as Appl. No. 17/671,673.
Application 17/671,673 is a division of application No. 16/341,143, granted, now 11,281,026, previously published as PCT/US2017/060603, filed on Nov. 8, 2017.
Claims priority of provisional application 62/422,363, filed on Nov. 15, 2016.
Prior Publication US 2022/0171217 A1, Jun. 2, 2022
Int. Cl. G02C 7/12 (2006.01); G02C 7/02 (2006.01); G02C 7/06 (2006.01)
CPC G02C 7/12 (2013.01) [G02C 7/022 (2013.01); G02C 7/06 (2013.01)] 4 Claims
OG exemplary drawing
 
1. Eyewear comprising first and second prescription lenses disposed in a frame, each of the first and second prescription lenses being a bi-focal optical lens and comprising:
a substrate; and
a reflective polarizer bonded to the substrate, the reflective polarizer substantially transmitting light having a first polarization state and substantially reflecting light having an orthogonal second polarization state, the bi-focal optical lens having a first focal length for light having the first polarization state and a second focal length for light having the second polarization state, the first focal length being longer than the second focal length, such that without the reflective polarizer, the bi-focal optical lens would have a single focal length,
wherein the eyewear is prescription eyeglasses configured to correct a user's vision.