Patent ID: 11960683
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Optics (Instruments)
Classification: CPC G | IPC F  G

Claim 5:
6. The display system of claim 1, wherein the plurality of polymeric layers comprises a plurality of first polymeric layers arranged along at least a portion of a thickness of the reflective polarizer and sequentially numbered from 1 to N, N an integer greater than about 150, the plurality of first polymeric layers comprising a polymeric end layer at each end thereof, the polymeric end layers and each layer therebetween having an average thickness less than about 350 nm, a plot of an average layer thickness versus a layer number of the plurality of first polymeric layers comprising a knee region separating a left region comprising at least Q1 sequentially arranged first polymeric layers, Q1 an integer greater than about 100, where the first polymeric layers have lower layer numbers, from a right region comprising at least Q2 sequentially arranged first polymeric layers, Q2 an integer of at least 10, where the first polymeric layers have higher layer numbers, such that a linear fit to the at least Q1 sequentially arranged first polymeric layers in the left region has a positive linear slope having a magnitude of greater than about 0.04 nm per layer number with an r-squared value of greater than about 0.8, and a linear fit to the at least Q2 sequentially arranged first polymeric layers in the right region has a negative linear slope having a magnitude of greater than about 0.1 nm per layer number with an r-squared value of greater than about 0.8.