Multi-focal-plane head-up display device

• Main Author: CHEN XIXUN
• Format: Patent
• Language: Chinese; English
• Published: 25.01.2022
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS

The invention relates to a multi-focal-plane head-up display device, which comprises a main body, a projector, a first reflecting element, a second reflecting element, a polarizing element and a third reflecting element, the polarization direction of first image light of a first area of a projection picture projected by the projector is perpendicular to the polarization direction of second image light of a second area of the projection picture. The first image light passes through the first reflection element and the polarization element to form a first virtual image. The second image light passes through the second reflection element, the polarization element and the third reflection element to form a second virtual image. Therefore, not only can two virtual images with different focal planes be provided, but also the volume occupied by the head-up display device can be reduced, and the manufacturing cost can be reduced. 本发明是一种多焦平面抬头显示设备，包含主体、投影器、第一反射元件、第二反射元件、偏光元件和第三反射元件。所述投影器投影的投影画面的第一区域的第一影像光的偏振方向与所述投影画面的