Vehicle-mounted head-up display system

Abstract

The invention provides a vehicle-mounted head-up display system which comprises a projector, a light beam diffusion plate and an imaging plate, wherein the projector is used for sending out projectionlight according to a to-be-projected image so that the projection light can form a real image of an image on the light-in surface of the light beam diffusion plate; the light beam diffusion plate isused for obtaining beam expanding light after beam expanding on the incident projection light and ejecting the beam expanding light to the imaging plate; the imaging plate is used for converging the incident beam expanding light to obtain imaging light and projecting the imaging light into a vehicle through a front windshield of the vehicle so that the reverse extension line of the imaging light forms a virtual image of the image outside the vehicle. According to the system, the projection light is subjected to beam expanding through the light beam diffusion plate, the incident hole diameter required by the image can be ensured, and accordingly, the quality of the virtual image of the image formed through the reverse extension lines of the imaging light outside the vehicle is ensured.

Description

technical field [0001] The invention relates to the technical field of projection display, in particular to a vehicle-mounted head-up display system. Background technique [0002] The vehicle-mounted head-up display system can project the image to be projected onto the front windshield of the vehicle, so that the driver can quickly read the relevant information on the instrument panel without changing the focus of the eyes while observing the external road conditions. Data, thereby improving the safety of drivers driving vehicles. In the prior art, the vehicle-mounted head-up display system is installed inside the vehicle and adopts a traditional fold-back structure to reflect the projection light emitted by the projector into the vehicle to form a real image of the image. [0003] In this way, the incident aperture that the optical system can receive is limited, the number of light projection types is small, and the quality of the real image of the image formed in the car ...

AI Technical Summary

Problems solved by technology

In addition, the vehicle-mounted head-up display system can be installed outside the vehicle, and the optical system does not occupy the interior space of the vehicle, thereby effectively ensuring the seating space inside the vehicle, and is used to solve the problem that the existing vehicle-mounted head-up display system is installed inside the vehicle The entrance aperture is limited, the number of light projections is small, and the quality of the real image of the image formed in the car is poor

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