Device for improving imaging depth of field of mold protector camera and using method thereof

The invention provides a device for improving the imaging depth of field of a mold protector camera and a using method thereof. The device comprises a shell, a photosensitive element, a camera and a first rotation adjusting mechanism. The shell is provided with a detection end. The camera is installed at the detection end. T he photosensitive element is installed in the shell through the first rotation adjusting mechanism, and the first rotation adjusting mechanism can drive the photosensitive element to rotate at a vertical plane angle. The photosensitive element detects and images a target through a camera, and the first rotation adjusting mechanism drives the photosensitive element to rotate, so that the photosensitive surface of the photosensitive element is parallel to the target. According to the camera imaging depth-of-field device, the photosensitive element and the first rotary adjusting mechanism are adopted, so that the photosensitive element can be rotationally adjusted, and the problem of fuzzy d