Design and application of an underwater laser alignment adjustment mechanism

To address the challenges of laser transmission and alignment accuracy in complex underwater environments, the quickrelease modular assembly is study proposes a high-precision, highly reliable laser alignment adjustment mechanism designed for adaptability in such conditions. The solution introduces a transmitting-end device and a receiving-end device within the alignment adjustment mechanism. A tripod structure ensures stability, while a multi-degree-of-freedom (DOF) adjustment system for azimuth and elevation enables precise control of the laser optical path. A linkage rod design allows flexible multi-section assembly, facilitating pre-deployment ground testing and on-site fine-tuning, thereby significantly reducing installation complexity and time costs. The mechanism incorporates an optical path reflection technique, combining a laser pointer at the transmitting end with a pinhole optical film device at the receiving end to achieve rapid target positioning. This approach effectively resolves signal transmission challenges in special testing environments such as ice-covered water surfaces, aiming to enhance the reliability and efficiency of underwater laser communication, detection, and engineering applications.