▎ 摘　　要

NOVELTY - The utility model claims an optical unit capable of monitoring fracture, a projection module and deep camera, comprising an optical element, the surface of the optical element provided with a chain graphene structure, chain graphite structure is connected with a power supply device, chain graphite structure is a one way on the optical element surface arranged in patterned, graphene link without crossing, the power supply device makes current flowing through the link. current integrity state of the utility model, the surface of the optical element attaching a layer of patterned graphene film, and injecting current to the graphene film, can be through real-time monitoring of chain graphene structure to judge the optical element to realize a simple technology, low cost, small influence transmitting performance, without additionally increasing the size of the device capable of monitoring breakage of optical unit. and so as to control the opening and closing of the light source to ensure human safety.