Patent ID: 11921299
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 6:
7. A display system for displaying a virtual image to a passenger of a vehicle, the display system comprising:
a display panel configured to emit a polarized image light having a first polarization state and substantially distinct blue, green, and red emission spectra having respective blue, green, and red full widths at half maxima (FWHMs);
a reflective polarizer configured to receive and reflect the polarized image light as a first reflected polarized image light, the reflective polarizer comprising a reflection spectrum comprising substantially distinct blue, green, and red reflection bands with respective blue, green, and red FWHMs, such that:
for a first light incident at a first predetermined angle from about 30 degrees to about 50 degrees with respect to a normal to a major surface of the reflective polarizer:
for the first polarization state, the reflective polarizer reflects at least about 60% of the first light for at least one same first wavelength within each of the FWHMs of the blue, green and red reflection bands and within each of the respective FWHMs of the blue, green, and red emission spectra;
for the first polarization state, the reflective polarizer transmits at least about 50% of the first light for at least one same second wavelength between the FWHMs of the blue and green reflection bands and between the FWHMs of the blue and green emission spectra, and for at least one same third wavelength between the FWHMs of the green and red reflection bands and between the FWHMs of the green and red emission spectra;
for an orthogonal second polarization state, the reflective polarizer transmits at least about 60% of the first light for each wavelength in the FWHMs of the blue, green and red reflection bands, each wavelength in the FWHMs of the blue, green and red emission spectra, and each wavelength therebetween; and

wherein, for a second light incident at a second predetermined angle less than about 30 degrees with respect to the normal to the major surface of the reflective polarizer, and for each of the first and second polarization states, the reflective polarizer transmits at least about 50% of the second light for the at least first wavelength.