Ultra-wide angle lens capable of integrally moving for focusing and used for shooting fulldome

Abstract

An ultra-wide angle lens capable of integrally moving for focusing and used for shooting a fulldome. The lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a diaphragm, a seventh lens, an eighth lens and a ninth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the diaphragm, the seventh lens, the eighth lens and the ninth lens are arranged from an object side to an image side along an optical axis in sequence, the fifth lens, the eighth lens and the ninth lens have positive focal power, and other lenses have negative focal power. In the shooting process of the fulldome, the whole set of lenses move for focusing; the third lens, the fourth lens, the sixth lens, the seventh lens and the ninth lens are formed through bonding of double lens bodies. The lens is reasonable in design, high in practicability, and suitable for shooting of the fulldome using an 8k camera with the super35 picture size.

Description

technical field [0001] The invention relates to a technology in the field of optical imaging, in particular to an overall mobile focusing super wide-angle lens for shooting dome movies. Background technique [0002] Dome movie, also known as "dome movie" or "dome movie", is a kind of big-screen movie that appeared in the 1970s. At present, super wide-angle fisheye lenses are used for shooting and screening. The audience hall is a dome structure, and the screen is hemispherical. The audience is surrounded by it, and the screen is like a sky. Because the screen image is large and clear, it extends from the front of the audience to the back, and it is accompanied by stereo surround sound, which makes the audience feel as if they are in the middle of it, and the on-site effect is very strong. [0003] Almost all dome movies currently on the market use super 35mm format cameras when shooting. With the development of movie camera sensor technology, the resolution of the current ...

AI Technical Summary

Problems solved by technology

However, most of the existing super35 format lenses are fisheye lenses with an angle of more than 180° or wide-angle lenses with an angle of less than 150°. The peripheral chromatic aberration is relatively large, and the peripheral dispersion is serious in actual use; and the distortion is large, and the peripheral distortion is very obvious, which cannot meet the requirements. Shooting needs and viewing requirements of dome movies

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