Reflective polarizer, windshield, integral optical construction and method for making integral optical construction

A reflective polarizer comprising a plurality of first layers numbering N1 in total disposed on a plurality of polymeric second layers numbering N2 in total, 2<N1<50, N2-N1>10, each of the first and polymeric second layers having an average thickness of less than about 500 nm, each of at least 30% of the first layers comprising at least 30% by weight of an inorganic material, such that for an incident light incident in an incident plane, a visible wavelength range extending from about 420 nm to about 680 nm, and an infrared wavelength range extending from about 850 nm to about 1100 nm:

• for a first incident angle of less than about 10 degrees, the reflective polarizer, and the plurality of first layers have respective average optical reflectances R3v and R1v in the visible wavelength range and respective average optical reflectances R3ir and R1ir in the infrared wavelength range, R1v<R3v and R1ir-R3ir>10%, when the incident light is polarized along an in-plane first direction;
• and
• for the visible wavelength range and for a second incident angle of greater than about 40 degrees, the plurality of polymeric second layers has an average optical reflectance R2v(x) when the incident plane comprises the first direction and an average optical reflectance R2v(y) when the incident plane comprises an in-plane second direction orthogonal to the first direction, 5%<R2v(y)<R2v(x)<60%.