Oblique projection optical structure suitable for head-up display system

By adjusting the position of the PGU image source and changing the shape of the reflector in the head-up display system, the problem of fixed tilt angle of the virtual image surface was solved, enabling continuous adjustment of the angle between the virtual image and the ground, expanding the range of depth variation, adapting to different user needs, and improving the fusion effect between the virtual image and the real world.

CN223897719UActive Publication Date: 2026-02-10SHENZHEN ROADROVER TECH
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Patent Information

Application Number
CN202520058769.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2026-02-10
Estimated Expiration
2035-01-10

AI Technical Summary

Technical Problem

The existing head-up display system has a fixed tilt angle for the virtual image surface, which cannot adapt to different user needs. Furthermore, the virtual image does not adhere well to the ground, and the virtual image does not blend well with the real world.

Method used

By adjusting the position of the PGU image source using the angle adjustment component and changing the surface shape of the first and second reflectors in the optical design, the virtual image angle can be continuously adjusted, expanding the range of depth of field variation and adapting to different types of HUDs.

Benefits of technology

It enables continuous adjustment of the angle between the virtual image and the ground, expands the depth range of the HUD system, meets the needs of different users, and improves the fusion effect between the virtual image and the real world.

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Abstract

The utility model discloses an oblique projection optical structure suitable for a head-up display system, which comprises a PGU image source and an eye box, the PGU image source is used for outputting displayed images, and the eye box is used for receiving the images output by the PGU image source; the device comprises a first reflector, a second reflector and a windshield, the first reflector and the second reflector are arranged on a light path of a PGU image source, the first reflector is used for carrying out first reflection on light emitted by the PGU image source, the second reflector is used for carrying out second reflection on the light reflected by the first reflector, and the windshield is arranged on the light path of the PGU image source. And the windshield is used for reflecting the light reflected by the second reflector to the eye box. According to the oblique projection optical structure suitable for the head-up display system provided by the utility model, virtual images at different angles can be obtained by changing the rotation angle of the PGU image source, the continuous adjustment of the included angle between the virtual image and the ground can be realized, the depth-of-field variation range can be expanded, and the oblique projection optical structure suitable for the head-up display system is adapted to different types of HUDs and meets the use requirements of different users.
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