| abstract |
Provided is a head-up display device with good visibility and excellent heat resistance when viewed through polarized sunglasses. The head-up display device of the present invention includes a display unit and a polarizing plate with a first retardation layer. The polarizing plate with the first retardation layer is on the emission side of the display unit, and includes a polarizer and a first retardation layer in order from the display unit side. 1 phase difference layer; and, the head-up display device has: a display, which can emit projection light; at least one reflector, which can reflect the projection light; and a polarizing plate with a second phase difference layer, which is set on the reflector The reflective surface includes a polarizer and a second retardation layer in order from the reflector side; the in-plane retardation Re (550) of the first retardation layer and the second retardation layer is 100 nm to 200 nm, respectively. |