Head-up display device for vehicle

A head-up display device for a vehicle, comprising:

• at least one light source;
• a liquid crystal display;
• and at least one polarization converter disposed between the light source and the liquid crystal display, the polarization converter being configured to convert unpolarized light generated by the light source into single linearly polarized light and to provide the single linearly polarized light to the liquid crystal display, wherein the light source comprises a first light source configured to generate first unpolarized light, and a second light source configured to generate second unpolarized light, and wherein the polarization converter comprises a first polarization converter configured to convert the first unpolarized light into single linearly polarized light, and a second polarization converter configured to convert the second unpolarized light into single linearly polarized light, a first inner mirror configured to reflect first linearly polarized light based on the first unpolarized light and second linearly polarized light based on the second unpolarized light, wherein a first distance from the first light source to a region of the first inner mirror at which the first linearly polarized light is reflected is shorter than a second distance from the second light source to a region of the first inner mirror at which the second linearly polarized light is reflected.