Optical system, shooting device and movable platform

Abstract

An optical system, a photographing device and a movable platform, the optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, The seventh lens and the eighth lens, the first lens, the second lens, the sixth lens, and the seventh lens have negative refractive power, and the third lens, the fourth lens, and the eighth lens have positive refractive power, so The fifth lens has negative or positive refractive power; the optical system satisfies the following expression: 1<|f 1 / f|<2.5, 1<|f 2 / f 1 |<1.75, 0.9<|f 4 / f 3 |<1.5, 2<|f 5 / f|<7, 0.5<|f 7 / f 6 |<1.5, 1.9<|f 8 / f|<3.5, 4.5<|TL / f|<6, 0.2<|BFL / TL|<0.5, 1<|BFL / f|<1.5; f is the focal length of the optical system, f 1 to f 8 are the focal lengths of the first lens to the eighth lens, TL is the distance on the optical axis from the center of the lens surface of the first lens close to the object side to the imaging plane; BFL is the lens surface of the eighth lens close to the image side The distance on the optical axis from the center to the imaging plane.

Description

Technical field [0001] The present application relates to the field of optical technology, and more particularly to an optical system, an optical system, an optical system, and a movable platform. Background technique [0002] As technology development, miniaturization, high image quality, low cost, large field of view shooting photographic lenses are increasingly favored by people. Existing drones and motion camera lenses are mostly required to be super high optical quality, and the shooting range requires a certain macro function, but the existing sports camera lens is mostly less than 1 inches (inch), like Small, the aperture is smaller; and it is not exchangeable. It can only be taken for a certain range or a certain focus section range, which is difficult to satisfy the larger range of diversified demand, so the user's needs cannot be satisfied. Inventive content [0003] Based on this, the present application provides an optical system, a photographing device, and a movabl...

AI Technical Summary

Problems solved by technology

Most of the existing drone and sports camera lenses require super high optical quality, and the shooting range requires a certain macro function. However, the image area of ​​the existing sports camera lenses is mostly smaller than 1 inch (inch), like The surface is small, the aperture is small; and it is not interchangeable, it can only shoot objects in a certain range or a certain focal length range, it is difficult to meet the diverse needs of a large range, so it cannot meet the needs of users

Images