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

Inactive Publication Date: 2016-01-13
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the projection distance of the disclosed transmissive HUD patents is often fixed and relatively short, and users cannot choose the most comfortable projection distance by themselves; the exit pupil diameter of the projection is relatively small, and the person's head moves slightly, and the HUD optical system cannot be received. The projected image, and the height adjustment mirrors for projected virtual images are often unreasonably set

Method used

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  • HUD (Head Up Display) optical system and application thereof on motor vehicle
  • HUD (Head Up Display) optical system and application thereof on motor vehicle
  • HUD (Head Up Display) optical system and application thereof on motor vehicle

Examples

Experimental program
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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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Abstract

The invention discloses a HUD (Head Up Display) optical system and application thereof on a motor vehicle. The optical system comprises a front reflector group, a lens group and a rear reflector, which are arranged in sequence from the object space of the optical system to the image space of the optical system, wherein the overall lens group can move axially. According to the technical solution, the vehicle information displayed on an instrument panel is clearly displayed on a windshield in a combination mode of the front reflector group, the lens group and the rear reflector, the projection distance can be changed by movement of the lens group, and large exit pupil diameter and long exit pupil distance can be realized to enlarge the visible range of a user.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a HUD optical system and its application on motor vehicles. Background technique [0002] With the development of active safety in the automotive industry, higher requirements are put forward for the display of on-board safety information. Traditional on-board information is often displayed on the dashboard, and users need to lower their heads to see the information, which brings certain safety hazards. Therefore, there is a need for a display method in which the user can obtain all safety information during normal driving without bowing his head, and the HUD optical system can meet this function. [0003] At present, the projection distance of the disclosed transmissive HUD patents is often fixed and relatively short, and users cannot choose the most comfortable projection distance; the diameter of the exit pupil of the projection is relatively small, and the person's he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0101
Inventor 徐超郎海涛谢前森
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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