An optical-mechanical structure of a head-up display system and an assembly method of the glued mirror group

Abstract

The present invention relates to an optical-mechanical structure of a head-up display system and an assembly method of a glued lens group thereof. The optical-mechanical structure of the head-up display system includes a projector unit and diffusion sheets sequentially arranged on the projection optical path of the projector unit Components, circular transmissive mirror components, reflector groups, and glued mirror groups. The optical-mechanical structure of the head-up display system adopts a transmissive optical path design, which obtains a larger field of view and achieves a longer projection distance. By setting the reentrant optical path, the optical path is shortened, the size and dimension are reduced, and energy loss caused by multiple reflections is avoided at the same time, ensuring the brightness and clarity of the projected image.

Description

technical field [0001] The invention relates to the technical field of optical precision mechanical structures, in particular to an optical-mechanical structure of a large-field-of-view transmissive head-up display system and an assembly method of a glued mirror group. Background technique [0002] The head-up display system is referred to as W-HUD (Windshield HUD), also known as the parallel display system, which refers to the driver-centered, blind-operated, multi-functional instrument panel. The function of the head-up display system is to project important information such as speed and navigation onto the windshield in front of the driver, so that the driver can see important driving information such as speed and navigation without looking down or turning his head. W-HUD is widely used in aircraft, especially fighter jets, but because it is very expensive, its application in the automobile and ship industries is very limited. In the automotive industry, it can only be ma...

AI Technical Summary

Problems solved by technology

W-HUD is widely used in aircraft, especially fighter jets, but because it is very expensive, its application in the automobile and ship industries is very limited. In the automotive industry, it can only be matched with high-end cars.

Currently, the cheap head-up display products available on the market are C-HUD projected on a separate small screen instead of W-HUD on the windshield glass. Although these products are cheap, they cannot be integrated with cars or ships. existing

Moreover, both the HUD products mounted on high-end cars and the independent HUD products on the market have many shortcomings: because the existing W-HUDs are all reflective optical designs, the reflective optical design is limited by the size of the reflector and cannot A larger field of view is obtained, and the resolution of the existing reflective W-HUD is low, and the image is blurred; in addition, the existing reflective W-HUD cannot achieve long-distance projection. The field of view, HUD generally needs to be designed with multiple reflections. Multiple reflections will also cause brightness reduction and lower image information clarity. Moreover, the multiple reflection structure will cause the entire HUD to be very large and cannot be installed in small and medium-sized cars. , the scope of use is relatively limited

Images