optical lens

Abstract

The present application discloses an optical lens. In one embodiment, the optical lens sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens along the optical axis from the object side to the image side , wherein the first lens has a negative refractive power and is in the shape of a meniscus with a convex surface facing the object side; at least two of the second lens, the third lens, the fourth lens and the fifth lens are cemented together; The sixth lens has positive power, and both the object side and the image side of the sixth lens are convex; and the seventh lens has negative power. By using the optical lens according to the present application, a wide adjustable focus range, a telephoto large viewing angle, a large central angular resolution and a high resolution capability can be realized.

Description

technical field

[0001] The present application relates to the field of optics, in particular to an optical lens, and more specifically to an optical lens including seven lenses. Background technique

[0002] In recent years, with the development of active safety in the automotive industry, the requirements for vehicle front-view cameras have been continuously increasing.

[0003] Large field of view, miniaturization, and high pixels are already necessary conditions for this type of lens. At the same time, the requirements for the recognition of environmental objects are getting higher and higher, specifically, the optical system is required to have a larger angular resolution. The angular resolution of the lens reflects the strength of the optical system's ability to distinguish the smallest distance between two adjacent objects.

[0004] However, due to the large field of view, the focus range (DOF) of such optical lenses is generally small, and the focal length is genera...

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