| abstract |
Provided are an optical film, a polarizing plate, and a liquid crystal display device that are capable of achieving both a thinner, hard polarizing plate protective film and capable of improving the polarizing plate durability. The optical film is a cellulose acylate film containing a sugar ester compound having cellulose acylate and at least one aromatic group, has a film thickness of 15-35 µm, and has an aromatic group number density for the sugar ester compound of 0.9 × 10 -3 to 5.00 x 10 -3 mol per 1 g of cellulose acylate film solid. |