HUD (Head Up Display) optical system and application thereof on motor vehicle
An optical system and axial movement technology, which is applied in the direction of optics, optical components, instruments, etc., can solve the problems of unable to receive the HUD optical system, small exit pupil diameter, unreasonable mirror setting, etc., to increase the visual range , the effect of large exit pupil diameter and large exit pupil distance
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Embodiment 1
[0036] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a HUD optical system. The HUD optical system in this embodiment includes a front reflector group, a lens group and a rear reflector. The order of the image side of the optical system is arranged sequentially, and the lens group can move axially as a whole.
[0037] Specifically, the lens group is fixed on a holder, and the holder is installed on a sliding platform, and a screw rod drives the holder to move axially on the sliding platform.
[0038] Such as figure 2 as shown, figure 2 It is an overall schematic diagram of the HUD optical system installed inside the motor vehicle in this embodiment. Wherein, the HUD optical system of the present invention is installed under the front windshield L7, and human eyes can observe the virtual image L9 in front of the front windshield at the exit pupil L8.
[0039] In this embodiment, the front mirror group includes two plane mirrors, which are re...
Embodiment 2
[0061] It should be noted that the difference between this embodiment and Embodiment 1 is that the lens group in this embodiment is a cemented lens, and other features are the same as Embodiment 1. The use of cemented lenses is beneficial to the installation and fixation of the lenses in the overall HUD system, and at the same time, the optical performance is also more stable, ensuring the resolution of the HUD optical system of the present invention.
[0062] image 3 It is a structural schematic diagram of a HUD optical system provided in this embodiment.
[0063] Figure 4 It is an overall schematic diagram of the HUD optical system installed inside the motor vehicle, wherein the HUD optical system of the present invention is installed under the front windshield L7, and the human eye can observe the virtual image L9 in front of the front windshield at the exit pupil L8.
[0064] In this embodiment, the adjustment range of the angle α of the rear reflector (the third refle...
Embodiment 3
[0076] It should be noted that the difference between this embodiment and Embodiments 1 and 2 is that the lens group in this embodiment is a plastic lens and a doublet lens, and other features are the same as Embodiment 1. The use of plastic lenses can reduce the cost of the HUD optical system and reduce the weight of the entire system. The first surface of the first lens L4 is an aspheric surface, which can increase the clear aperture of the HUD optical system, thereby increasing the driver's visibility. It also improves large-aperture aberrations and improves the resolution stability of the HUD optical system in vibration environments.
[0077] Figure 5 It is a structural schematic diagram of a HUD optical system provided in this embodiment.
[0078] Image 6 It is an overall schematic diagram of the HUD optical system installed inside the motor vehicle, wherein the HUD optical system of the present invention is installed under the front windshield L7, and the human eye c...
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