Polarizing member and head-up display device comprising same

A head-up display comprising:

• a polarizing member comprising:
• a polarizing plate having a polarizer and using a dye-based polarizing material, the polarizer being positioned so that its polarization direction is parallel to a polarized light output from a display unit and passing through the polarizing member;
• a first support plate that is laminated with a front surface of the polarizing plate via an adhesive layer;
• and
• a second support plate that is laminated with a rear surface of the polarizing plate via an adhesive layer, wherein
• the first support plate and the second support plate are laminated to the polarizing plate so as to form a structure that is symmetric in a plate thickness direction;
• a display unit that outputs an image;
• and
• a housing that houses the display unit therein, wherein
• the polarizing member is used as a transparent cover that transmits the image to outside of the housing, and the polarizing member projects, as a projected image, a virtual image of said image that has passed through the polarizing plate.