Method and device for realizing accurate focusing during shooting in visible light and non visible light

The invention is applicable to technical field of image acquisition, and provides a method for realizing accurate focusing during shooting in visible light and non visible light. The method comprises the following steps: step S1, recording a defocused value of a lens in the non visible light relative to the visible light and pretested by lens detection equipment; and step S2, adjusting the lens in the visible light for focusing, using the recorded defocused value of the lens in the non visible light as a focusing offset of the lens, adjusting the focusing offset of the lens by using a focusing module to realize the focusing in the non visible light, and shooting images in the non visible light after the focusing operation. The method and device for realizing the accurate focusing during shooting in the visible light and the non visible light provided by the invention can be compatible with the visible light and nearly all non visible light; moreover, accurate focusing can be realized when images are shot in e