Wide-angle lens and panoramic photography system

Abstract

The invention provides a wide-angle lens. From an object side to an imaging surface, the wide-angle lens orderly comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and a reflective element which is arranged between the second lens and the third lens, wherein the first lens has negative focal power, and an image side surface of the first lens is a concave surface; the second lens has negative focal power, and the image side surface of the second lens is the concave surface; the third lens has positive focal power; the fourth lens has positive focal power, and the image side surface of the fourth lens is the concave surface; the fifth lens has negative focal power, and the image side surface and an object side surface of the fifth lens both are the concave surfaces; the sixth lens has positive focal power, and the image side surface and the object side surface of the sixth lens both are the convex surfaces; the seventh lens haspositive focal power, and the image side surface and the object side surface of the sixth lens both are the convex surfaces; the first lens and the third lens are spherical mirrors, one of the secondlens and the fourth lens is an aspherical mirror and the other one thereof is the spherical mirror; the fifth lens and the sixth lens both are the spherical mirrors, moreover, the fifth lens and the sixth lens are integrated together, and the seventh lens is the aspherical mirror. The invention also provides a panoramic photography system.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to a wide-angle lens and a panoramic camera system. Background technique [0002] With the continuous improvement of the market environment for panoramic lenses, panoramic high-definition photography lenses have become more and more diverse. At present, 360° panoramic high-definition cameras have entered the market for a short period of time and are still in the market potential development period. At the same time, the lenses used in panoramic camera systems on the market often use spherical lenses, which cannot correct high-order aberrations well. Some technical solutions provide wide-angle lenses without blind spots. Although the field of view reaches 270°, it still does not meet the needs of panoramic photography, and the resolution quality is low and processing is difficult, which is no longer suitable for the current market environment. [0003] In order to meet the ne...

AI Technical Summary

Problems solved by technology

At present, 360° panoramic high-definition cameras have entered the market for a relatively short period of time, and are still in the development period of market potential. At the same time, the lenses used in panoramic camera systems on the market are mostly spherical lenses, which cannot correct high-order aberrations well.

Some technical solutions provide a wide-angle lens without blind spots. Although the field of view reaches 270°, it still does not meet the needs of panoramic photography, and the resolution quality is low and the processing is difficult. It is no longer suitable for the current market environment.

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