Is the lens of the camera concave or convex?

The lens of the camera has convex lens and concave lens, which is a combination of convex lens and concave lens.

The effect of overall synthesis is a convex lens. The convex lens can converge the real image to the other side of the lens to form the real image, which exposes the film or electronic photosensitive element, but concave mirror can't. The lens in the camera is made of optical glass with different refractive indexes, and the convex lens and concave lens are made separately to combine them. Convex lens dispersion, concave lens pull-back dispersion (positive and negative effects).

Therefore, the later camera lenses are all composed of convex lenses and concave lenses. Digital camera is a product integrating optics, machinery and electronics. It integrates the conversion, storage and transmission of image information, and has the characteristics of digital access, interactive processing with computer and real-time shooting.

Brief introduction of camera

Camera, full name camera, is a kind of equipment that uses optical imaging principle to form images and record images with negative. A camera is an optical instrument used for photography. After the light reflected by the photographed scene is focused by the photographic lens and the shutter controlling the exposure, the photographed scene forms a latent image on the photosensitive material in the camera box, and the latent image is developed to form a permanent image. This technology is called photography. Digital camera is a kind of camera that uses electronic sensors to convert optical images into electronic data.