Provided is a polyester film which, when used as a member of an optical product, e.g. as a micro lens of an LCD backlight or as a base film of a prism, exhibits each of the functions of a back coat, namely antistatic performance, wear performance, and shielding performance, even if back-coat processing has not been performed, which maintains a high brightness, which is capable of imparting clear high-quality images, and which achieves an excellent correspondence between optical performance and cost. This biaxially stretched laminated polyester film comprises a three-layer structure including: polyester layers (A, C) which form surface layers; and a polyester layer (B) which forms an intermediate layer. In the biaxially stretched laminated polyester film, an easy-adhesion coating layer is provided upon layer (A), an antistatic coating layer is provided upon layer (C), and 0.05-1.5 wt% of inert organic particles having an average particle size of 3.0-7.0 mum is included in layer (C).