Eyeball imaging brightness adjusting device

The utility model discloses an eyeball imaging brightness adjusting device, which belongs to the technical field of brightness adjustment, and comprises two concentric-square-shaped frame bodies, the concentric-square-shaped frame bodies are symmetrical to each other, a moving block is arranged in each concentric-square-shaped frame body, one end of each moving block is provided with a round hole, the bottom end of each moving block is fixedly connected with a contact block which is in contact with the inner wall of the corresponding concentric-square-shaped frame body, and the contact block is provided with a through hole. A sliding groove is formed in the top end of the concentric-square-shaped frame body, the top end of the moving block is fixedly connected with a sliding block slidably connected with the sliding groove, one end of the moving block is fixedly connected with a plurality of mounting plates, and one end of each mounting plate is connected with a bulb through a rotating assembly. By arranging