Schematic diagram of camera imaging principle

The schematic diagram of camera imaging principle is as follows:

The lens of the camera is equivalent to a convex lens, and the light from the object passes through the lens of the camera and converges on the film to form an inverted and reduced real image. Compared with traditional cameras, traditional cameras use "film" as the carrier of recording information, and the "film" of digital cameras is its imaging photosensitive device, which is integrated with the camera and is the heart of digital cameras. Digital cameras use photosensitive devices to convert optical signals into electrical signals, which are recorded on memory cards after analog-to-digital conversion.

According to different imaging media, extended data cameras can be divided into film cameras, digital cameras and Polaroid cameras. Film camera mainly refers to the equipment that images through lens and records images with film.

Digital camera is a photographic equipment that uses semiconductor photoelectric coupling devices and digital storage to record images. It has the characteristics of convenient use, convenient photo transmission and convenient storage. Polaroid camera, also known as primary imaging camera, directly exposes images on special photographic paper, and can see photos in one minute, which is suitable for taking pictures.

Baidu Encyclopedia-Camera (equipment for imaging and recording images using optical principles)