Multi-layer layered film

A multi-layer, layered film comprising:

• a multi-layer, alternately layered body containing birefringent first layers including a first resin and isotropic second layers including a second resin,
• wherein the multi-layer, layered film has a layer thickness profile with which light at a wavelength of from 380 to 780 nm can be reflected due to optical interference between each of the first layers and each of the second layers,
• wherein a layer thickness profile for an optical thickness of the first layers has a first monotonically increasing region, the first monotonically increasing region including a 1A monotonically increasing region with a maximum optical thickness of up to 100 nm and a 1B monotonically increasing region with a minimum optical thickness of over 100 nm,
• wherein a ratio 1B/1A of a slope 1B in the 1B monotonically increasing region to a slope 1A in the 1A monotonically increasing region is from 0.8 to 1.5,
• wherein a layer thickness profile for an optical thickness of the second layers has a second monotonically increasing region, the second monotonically increasing region including a 2A monotonically increasing region with a maximum optical thickness of up to 200 nm and a 2B monotonically increasing region with a minimum optical thickness of over 200 nm, and
• wherein a ratio 2B/2A of a slope 2B in the 2B monotonically increasing region to a slope 2A in the 2A monotonically increasing region is from 5 to 10.