US 12,403,674 B2
Glass laminate including reflective film
John F. Vanderlofske, III, Minneapolis, MN (US); Eileen M. Franey, Woodbury, MN (US); Stephan J. Pankratz, Eagan, MN (US); Matthew B. Johnson, Woodbury, MN (US); Brianna N. Wheeler, Bloomington, MN (US); Adam D. Haag, Woodbury, MN (US); Kristy A. Gillette, Spring Valley, WI (US); and Jonah Shaver, St. Paul, MN (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Jun. 18, 2024, as Appl. No. 18/746,176.
Application 18/746,176 is a division of application No. 17/274,594, granted, now 12,049,062, previously published as PCT/US2019/051733, filed on Sep. 18, 2019.
Claims priority of provisional application 62/735,567, filed on Sep. 24, 2018.
Prior Publication US 2024/0336037 A1, Oct. 10, 2024
Int. Cl. B32B 17/10 (2006.01); B32B 7/12 (2006.01); G02B 5/30 (2006.01); G02B 27/00 (2006.01)
CPC B32B 17/10036 (2013.01) [B32B 7/12 (2013.01); B32B 17/10458 (2013.01); B32B 17/10743 (2013.01); B32B 17/10761 (2013.01); G02B 5/30 (2013.01); G02B 27/0018 (2013.01); B32B 2307/416 (2013.01); B32B 2307/42 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A glass laminate comprising:
first and second glass layers having substantially parallel outermost major surfaces; and
a reflective film comprising a plurality of alternating polymeric interference layers and disposed asymmetrically between the outermost major surfaces such that when a light source positioned within 2 m of the glass laminate projects a line onto the outermost major surface of the first glass layer along a first direction making an angle θ in a range of 30 degrees to 85 degrees with respect to a normal to the glass laminate so that the line extends along a second direction orthogonal to a first plane defined by the first direction and the normal and has a projected luminance distribution about a centerline of the projected line having a full width at half maximum of no more than 0.05 degrees, a first portion of the projected line reflects from the reflective film and a second portion of the projected line reflects from the outermost major surface of the first glass layer, a reflected image of the line comprising a primary reflected image portion defined by the reflected first portion and a first ghost portion defined by the reflected second portion, the first ghost portion substantially overlapping with the primary reflected image portion.