PGU optical system applied to HUD product

Abstract

The invention discloses a PGU optical system applied to an HUD product. The system mainly comprises a light source, a relay lens, a reflector, a dichroic plate, a photosensitive sensor, a rectangular prism and a DMD chip. The PGU optical system overcomes the defects that an existing PGU optical system applied to an HUD product is too large in size, difficult in heat dissipation design, insufficient in brightness when the virtual image distance is long, insufficient in brightness adjusting accuracy and the like. The size of the PGU optical system applied to the HUD product disclosed by the invention can reach 37 * 95 * 47.2, or even smaller; during heat dissipation design, heat can be directly conducted out of the product by means of an HUD product shell, and the heat is prevented from being concentrated into the product; compared with HUD products in the prior art, when the system adopts a 0.55-inch DMD chip, the output luminous flux is larger than 170lm, the brightness requirement when the HUD virtual image distance is larger than 10m can be met, and the real AR-HUD effect is achieved.

Description

technical field [0001] The patent of the present invention relates to a head-up display device (HUD), especially a HUD head-up display device using DLP technology. Background technique [0002] With the development of the times and the advancement of science, automobile products have gradually become the main means of transportation in daily life. The penetration rate of automobile products has increased year by year, and the level of drivers is uneven. national attention. The head-up display technology (HUD) is a new technology that has been discussed more in recent years to prevent the driver from frequently looking down at the instrument or navigation. This technology can also be used in conjunction with other technologies such as ADS to greatly improve the driver's concentration. To improve the safety of driving. [0003] There are many types of technologies applied to head-up display technology (HUD), and the head-up display technology using DLP technology can effecti...

AI Technical Summary

Problems solved by technology

[0003] There are many types of technologies applied to the head-up display technology (HUD), and the head-up display technology using DLP technology can effectively avoid the temperature rise effect of the head-up display device caused by the backflow of sunlight, resulting in the system not working properly due to excessive temperature.

[0004] At present, the main problems that plague the application of DLP technology in head-up display devices are excessive volume, difficult heat dissipation, long virtual image distance, insufficient brightness when the screen is large, and inability to accurately adjust brightness according to different environmental changes, etc.

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