| 摘要 |
Provided are: an optical laminate that comprises a polarizer and an optical film, which is laminated on one surface of the polarizer and converts linearly polarized light to elliptically polarized light that is emitted therefrom, and which satisfies formulae (1)-(4); and an image display device which uses this optical laminate. 100 nm ≤ Re(590) ≤ 180 nm formula (1) 0.5 < Rth(590)/Re(590) ≤ 0.8 formula (2) 0.85 ≤ Re(450)/Re(550) < 1.00 formula (3) 1.00 < Re(630)/Re(550) ≤ 1.1 formula (4) (In the formulae, Re(590), Re(450), Re(550) and Re(630) respectively represent in-plane retardation values at measurement wavelengths of 590, 450, 550 and 630 nm; and Rth(590) represents the retardation value in the thickness direction at a measurement wavelength of 590 nm.) |
