Optical-mechanical structure of head-up display system and assembling method of glued lens group of optical-mechanical structure

Abstract

The invention relates to an optical-mechanical structure of a head-up display system and an assembling method of a glued lens group of the optical-mechanical structure of the head-up display system, and the optical-mechanical structure of the head-up display system comprises a projector unit, and a diffusion sheet assembly, a circular transmitting mirror assembly, a reflecting mirror group and the glued lens group which are sequentially arranged on a projection light path of the projector unit, the optical-mechanical structure of the head-up display system adopts a transmission-type optical path design, obtains a larger view field surface, realizes a longer projection distance, shortens the optical path and reduces the dimension by setting a turn-back optical path, avoids energy loss caused by multiple reflections, and ensures the brightness and definition of a 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

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