The lens is the basic unit of the whole movie. A number of lenses form a paragraph or scene, and a number of paragraphs or scenes form a film. Therefore, lens is also the basic unit of visual language. It is the basis of narrative and ideographic. In the early shooting of film and television works, the lens refers to the sum of a continuous picture taken by the camera from start to rest; in the later editing, the lens is a set of pictures between two editing points; in the finished film, a lens refers to the complete segment between the former optical conversion and the latter optical conversion.The main function of the lens is to collect the reflected light of the object and focus it on the CCD. The image projected onto the CCD is inverted. The camera circuit has the function of inverting it. Its imaging principle is the same as that of the human eye.Star Opticcan customize and design all kinds of lenses according to customer requirements.