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...

Examples

Embodiment 1

[0064] Refer to the following figure 1 An optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0065] Such as figure 1 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens along the optical axis from the object side to the imaging side. Lens L7.

[0066] The first lens L1 is a meniscus lens with a negative refractive power and a convex surface facing the object side, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a biconcave lens with negative refractive power, and its object side S3 and image side S4 are both concave. The third lens L3 is a meniscus lens with positive refractive power, the object side S4 is convex, and the image side S5 is concave. The fourth lens L4 ...

Embodiment 2

[0084] Refer to the following figure 2 An optical lens according to Embodiment 2 of the present application is described. figure 2 A schematic structural view of the optical lens according to Embodiment 2 of the present application is shown.

[0085] Such as figure 2 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens from the object side to the imaging side along the optical axis. Lens L7.

[0086] The first lens L1 is a meniscus lens with a negative refractive power and a convex surface facing the object side, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a biconcave lens with negative refractive power, and its object side S3 and image side S4 are both concave. The third lens L3 is a biconvex lens with positive refractive power, and its object side S4 and image side S5 are both convex. The fourth lens L4 is a b...

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...

Examples

Embodiment 1

[0064] Refer to the following figure 1 An optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0065] Such as figure 1 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens along the optical axis from the object side to the imaging side. Lens L7.

[0066] The first lens L1 is a meniscus lens with a negative refractive power and a convex surface facing the object side, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a biconcave lens with negative refractive power, and its object side S3 and image side S4 are both concave. The third lens L3 is a meniscus lens with positive refractive power, the object side S4 is convex, and the image side S5 is concave. The fourth lens L4 ...

Embodiment 2

[0084] Refer to the following figure 2 An optical lens according to Embodiment 2 of the present application is described. figure 2 A schematic structural view of the optical lens according to Embodiment 2 of the present application is shown.

[0085] Such as figure 2 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens from the object side to the imaging side along the optical axis. Lens L7.

[0086] The first lens L1 is a meniscus lens with a negative refractive power and a convex surface facing the object side, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a biconcave lens with negative refractive power, and its object side S3 and image side S4 are both concave. The third lens L3 is a biconvex lens with positive refractive power, and its object side S4 and image side S5 are both convex. The fourth lens L4 is a b...

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