 The term "camera obscura" also refers to constructions or devices that make use of the principle within a box, tent, or room.Camera obscuras with a lens in the opening have been used since the second half of the 16th century and became popular as an aid for drawing and painting.The camera obscura box was developed further into the photographic camera in the first half of the 19th century when camera obscura boxes were used to expose light-sensitive materials to the projected image.