Image acquisition device and method

The invention provides an image acquisition device and method, and the device comprises an optical lens which is disposed in front of a preset object, and focuses the image information of the preset object; the imaging module is used for acquiring image information focused by the optical lens; and the reflector module is arranged between the optical lens and the imaging module, reflects image information focused by the optical lens to the imaging module, and is used for changing the image distance between the optical lens and the imaging module so as to be matched with the object distance between the preset object and the optical lens. The reflector module is arranged between the optical lens and the imaging module, the image distance is adjusted through the reflector, and matching between the object distance and the image distance is achieved, so that the object distance range of an image capable of being collected can be enlarged, and the effect of increasing the laser distance measuring range is achieved w