A DUAL-IMAGE PROJECTION APPARATUS, A HEAD-UP DISPLAY APPARATUS, AND A VEHICLE VISION AUXILIARY SYSTEM

The present application discloses a dual-image projection apparatus. The apparatus includes a light source and a spatial light modulator including a first modulation module and a second nodulation module. Additionally, the apparatus includes a Fourier lens and the spatial light modulator is positioned at a front focal plane of the Fourier lens. The first modulation module modulates light from the light source through the Fourier lens to reproduce a first 2D holographic image and the second modulation module modulates the light through the Fourier lens to reproduce a plurality of second 2D holographic images. The apparatus further includes a first light-diffusing film to display the first 2D holographic image to produce a first virtual image and a plurality of second light-diffusing films to respectively display the plurality of second 2D holographic images sequentially in a rate to produce a 3D virtual image.