Patent ID: 11906840
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Optics (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. An optical stack comprising at least one retardation layer disposed between, and bonded to, a reflective polarizer and an absorbing polarizer, the reflective polarizer configured to preferentially transmit light polarized along a transmission axis of the reflective polarizer and preferentially reflect light polarized along an orthogonal reflection axis of the reflective polarizer, the absorbing polarizer configured to preferentially transmit light polarized along a transmission axis of the absorbing polarizer and preferentially absorb light polarized along an orthogonal absorption axis of the absorbing polarizer, the retardation layer having a slow axis and configured to modulate a polarization of an incident light, the reflective polarizer reducing a wavelength-dispersion of the retardation layer.