Patent ID: 11927783
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical system comprising:
one or more optical lenses having at least one curved major surface;
a partial reflector; and
a reflective polarizer, such that for a substantially normally incident light in a predetermined wavelength range extending at least from about 450 nm to about 600 nm:
the partial reflector has an average optical reflectance of at least 30%; and
the reflective polarizer has an average optical reflectance Rs for a first polarization state, an average optical transmittance Tp for an orthogonal second polarization state, and an average optical reflectance Rp for the second polarization state, Tp≥80%, Rp≤1%, and 50%≤Rs≤95%.