INFRARED LIGHT REFLECTION PLATE,LAMINATED INTERLAYER SHEET FOR LAMINATED GLASS, LAMINATED GLASS, AND METHODS FOR MANUFACTURING THE SAME

摘要

An infrared light reflection layer laminate including a light reflection layer X1, a light reflection layer X2, a light reflection layer X3, a light reflection layer X4 and a light reflection layer X5 each of which is formed by fixing a cholesteric liquid crystalline phase, in which the light reflection layer X1 and the light reflection layer X2 reflect circularly polarized light in mutually opposite directions, a reflection central wavelength » 1 (nm) of the light reflection layer X1 and a reflection central wavelength » 1 ' (nm) of the light reflection layer X2 are substantially equal and both are in a range of 1190 nm to 1290 nm; the light reflection layer X3 and the light reflection layer X4 reflect circularly polarized light in mutually opposite directions, a reflection central wavelength » 2 (nm) of the light reflection layer X3 and a reflection central wavelength » 2 ' (nm) of the light reflection layer X4 are substantially equal and both are in a range of 1010 nm to 1070 nm; a reflection central wavelength » 3 (nm) of the light reflection layer X5 is in a range of 850 nm to 900 nm; and a reflectivity at a wavelength of 790 nm is 15% or less, and infrared rays are reflected, can suppress a change in the color of reflected light in a slanting direction and is highly heat shielding.