Embedded augmented reality display module and application thereof on diving helmet

The invention discloses an embedded augmented reality display module and an application thereof on a diving helmet, the embedded augmented reality display module comprises a glasses frame module, an AR lens and a projection module, the AR lens and the projection module are cooperatively installed on the glasses frame module, the AR lens is provided with a coupling-in grating, a turning grating and a coupling-out grating, and the coupling-in grating, the turning grating and the coupling-out grating are arranged on the glasses frame module. The coupling-in grating corresponds to a projection point of the projection module, the turning grating is horizontally arranged on one side of the coupling-in grating, and the coupling-out grating is located under the turning grating. The size of the device can be adjusted according to actual conditions, the device is matched with an existing diving helmet, and compatibility is high; a relatively mature traditional semiconductor micro-nano processing technology is used, and