Multilayer laminated film

A multilayer laminated film comprising a multilayer laminate in which a birefringent layer comprising a first resin and an isotropic layer comprising a second resin are alternately laminated,

• the multilayer laminated film being capable of reflecting light at a wavelength of 380 to 780 nm due to optical interference caused from the lamination structure of the birefringent layer and the isotropic layer,
• a series of the birefringent layers having an optical thickness monotonically increasing region (first monotonically increasing region), wherein when the thinnest layer that has an optical thickness of 100 nm or more in the first monotonically increasing region is defined as the 1st layer and the thickest layer that has an optical thickness of 190 nm or less in the first monotonically increasing region is defined as an mth layer, the 0.8×mth layer (if 0.8×m is not an integer, the ordinal of the rounded-off integer of 0.8×m) has an optical thickness in the range of 140 to 180 nm,
• a series of the isotropic layers having an optical thickness monotonically increasing region (second monotonically increasing region), wherein when the thinnest layer that has an optical thickness of 120 nm or more in the second monotonically increasing region is defined as the 1st layer and the thickest layer that has an optical thickness of 350 nm or less in the second monotonically increasing region is defined as an nth layer, the 0.8×nth layer (if 0.8×n is not an integer, the ordinal of the rounded-off integer of 0.8×n) has an optical thickness in the range of 150 to 280 nm.