Off-axis dual mirror focusing backlight display device and head-up display device

An off-axis dual mirror focusing backlight display device comprising:

• a light emitting array including a plurality of light sources, and providing a backlight source;
• a conical light cup array including a plurality of conical light cups, and set on an incoming light side of the conical light cup array, wherein each of the light sources corresponds to a corresponding one of the conical light cups, and the conical light cup array is configured to magnify the backlight source to reduce diffusion angle of the backlight source;
• a diffuser set on an outgoing light side of the conical light cup array, and configured to increase uniformity of the backlight source;
• a first curved mirror for receiving and reflecting the backlight source;
• a second curved mirror for receiving and reflecting the backlight source reflected by the first curved mirror;
• a display module for receiving the backlight source reflected by the second curved mirror;
• and
• at least one of the first curved mirror and the second curved mirror is a concave mirror, which is used for magnifying and pulling away the backlight source.