HEAD-UP DISPLAY APPARATUS

A head-up display apparatus projects a plurality of virtual images of which depths perceived by a user are different from each other. The head-up display apparatus includes a first projection apparatus and a second projection apparatus. The first projection apparatus includes a first display-light emitting unit configured to emit first display light, and a concave mirror configured to reflect the first display light and thereby emit reflected light thereof, and is configured to enable the user to perceive a first virtual image by projecting the reflected light onto a virtual-image display unit. The second projection apparatus includes a second display-light generation unit configured to let the reflected light pass therethrough and generate second display light different from the first display light, and is configured to enable the user to perceive a second virtual image by projecting the generated second display light onto the virtual-image display unit.