2d 402D-40 is a self-developed two-dimensional dilation module product by Lingxi Microlht. This product wehs 8g, has a large field of view angle of 40 ° FOV, a 25mm large exit pupil, aThe model has a length of 40 km, a depth of approximately 300 m, and a total of 4,507,394 degrees of freedom. Based on the ABAQUS platform,