Optical lens and electronic equipment

Abstract

The invention provides an optical lens and electronic equipment. According to the optical lens, a first lens has negative focal power, the first side face of the first lens is a convex face, and the second side face of the first lens is a concave face; the second lens has negative focal power, and the first side face of the second lens and the second side face of the second lens are both concave faces; the third lens has positive focal power, and the first side surface of the third lens and the second side surface of the third lens are convex surfaces; the fourth lens has positive focal power, and the first side face of the fourth lens is a convex face; the fifth lens has focal power, and the first side face of the fifth lens is a convex face; the sixth lens has focal power, and the second side surface of the sixth lens is a convex surface; and the seventh lens has focal power. According to the invention, at least one of the problems of high resolution, miniaturization, incapability of clear imaging when the temperature difference is relatively large and poor imaging quality in a weak light environment of an optical lens in the prior art is solved.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 19, 2023, with application number 202310733521.7 and invention name “Optical Lens and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of optical imaging equipment, and in particular to an optical lens and an electronic device. Background Art

[0003] With the development of science and technology, the application scenarios of optical lenses are gradually increasing, and users' requirements for the optical performance of optical lenses are gradually increasing. The structure of optical lenses is developing in the direction of miniaturization, which leads to the development of optical lenses in the direction of miniaturization. At the same time, when optical lenses are used in an environment with large temperature changes, the optical back focus of the lens will shift with the temperature change, resulting in image plane shift and blurred imaging, affecting normal use. The vehicle-mounted lens is a key component for the automatic driving assistance system to obtain external information. With the rapid development of the automatic driving assistance system, the performance requirements for the vehicle-mounted optical lenses are also getting higher and higher.

[0004] Since the actual road detection situation is relatively complex and requires the vehicle-mounted lens to have a good ability to recognize objects, the imaging quality of the lens itself is required to be high, and in order to adapt to more abundant application scenarios, high resolution has gradually become an urgent need for people. On the basis of meeting the imaging requirements of vehicle-mounted lenses, the smaller the vehicle-mounted lens, the easier it is to install the vehicle-mounted lens, but this will cause the resolution of ordinary vehicle-mounted lenses to contradict miniaturization; in addition, the application environment of vehicle-mounted lenses may have a large temperature difference, such as high temperature in summer and low temperature in winter. Under such conditions, ordinary lenses used will produce image plane shift due to temperature changes, making the lens image blurred and affecting normal use. In order to enable the vehicle-mounted lens to have clear imaging under high and low temperature working conditions, we need to suppress the offset of the lens optical back focus with temperature changes. At the same time, the current vehicle-mounted lenses have poor imaging clarity in low-light environments such as at night, resulting in greater safety hazards for vehicles driving at night.

[0005] That is to say, the optical lens in the prior art has at least one of the following problems: high resolution, miniaturization, inability to form clear images when the temperature difference is large, and poor imaging quality in a weak light environment. Summary of the invention

[0006] The main purpose of the present invention is to provide an optical lens and an electronic device to solve at least one of the problems of the optical lens in the prior art, namely, high resolution, miniaturization, inability to form clear images when the temperature difference is large, and poor imaging quality in a weak light environment.

[0007] To achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an optical lens, comprising: a first lens, the first lens having negative optical power, a first side surface of the first lens being a convex surface, and a second side surface of the first lens being a concave surface; a second lens, the second lens having negative optical power, a first side surface of the second lens and a second side surface of the second lens being concave surfaces; a third lens, the third lens having positive optical power, a first side surface of the third lens and a second side surface of the third lens being convex surfaces; a fourth lens, the fourth lens having positive optical power, a first side surface of the fourth lens being a convex surface; a fifth lens, the fifth lens having optical power, a first side surface of the fifth lens being a convex surface; a sixth lens, the sixth lens having optical power, a second side surface of the sixth lens being convex surfaces; and a seventh lens, the seventh lens having optical power.

[0008] Furthermore, the second side surface of the fourth lens is a convex surface or a concave surface.

[0009] Further, the second lens and the third lens are a cemented lens, the fifth lens and the sixth lens are a cemented lens, the fifth lens has positive focal power, the second side surface of the fifth lens is convex, the sixth lens has negative focal power, and the first side surface of the sixth lens is concave; or the fifth lens has negative focal power, the second side surface of the fifth lens is concave, the sixth lens has positive focal power, and the first side surface of the sixth lens is convex.

[0010] Further, the seventh lens has negative optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave; or the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is concave; or the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex; or the seventh lens has positive optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex.

[0011] Further, the seventh lens is an aspherical lens; and / or at least one of the first side surface of the seventh lens and the second side surface of the seventh lens has an inflection point.

[0012] Furthermore, the optical lens also includes a stop, and the stop is located between the fourth lens and the fifth lens.

[0013] Furthermore, a distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following relation: d11 / TTL≥0.05.

[0014] Furthermore, a distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following relation: d7 / TTL≥0.12.

[0015] Furthermore, the optical back focus BFL of the optical lens and the total optical length TTL of the optical lens satisfy: BFL / TTL≥0.02.

[0016] Furthermore, the focal length F3 of the third lens element and the focal length F of the entire optical lens group satisfy: |F3 / F|≤3.

[0017] Furthermore, the middle thickness d3 of the second lens, the middle thickness d4 of the third lens and the total optical length TTL of the optical lens satisfy: (d3+d4) / TTL≥0.05.

[0018] Further, the radius of curvature R11 of the second side surface of the sixth lens satisfies the following relationship with the focal length value F of the entire group of the optical lens: R11 / F≤-0.001; and / or the maximum field of view angle FOV of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens, and the total optical length TTL of the optical lens satisfy the following relationship: TTL / H / FOV≤0.1; and / or the total focal length value F of the optical lens satisfies the following relationship with the entrance pupil diameter ENPD of the optical lens: F / ENPD≤2.0; and / or the total optical length TTL of the optical lens satisfies the following relationship with the image height H corresponding to the maximum field of view angle of the optical lens: TTL / (H / 2)≥5; and / or the clear aperture D13 of the second side surface of the seventh lens satisfies the following relationship with the image height H corresponding to the maximum field of view angle of the optical lens: D13 / H≥0.7; and / or the radius of curvature R7 of the first side surface of the fourth lens satisfies the following relationship with the radius of curvature of the second side surface of the fourth lens R8 satisfies: |R7 / R8|≤2.5; and / or the maximum opening angle arctan(1 / K(S2) of the second side surface of the first lens satisfies: arctan(1 / K(S2)≥40; and / or the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens and the focal length value F of the entire group of the optical lens satisfy: (H / 2) / (F*tan(θ / 2)≥0.6; and / or the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the clear aperture D1 of the first side surface of the first lens and the clear aperture D2 of the second side surface of the first lens satisfy: (R1 / D1) / (R2 / D2)≤4; and / or the radius of curvature R2 of the second side surface of the first lens and the radius of curvature R3 of the first side surface of the second lens satisfy: (R2-R3) / (R2+R3)≤-2.

[0019] Furthermore, the focal length value F23 of the cemented lens formed by the second lens and the third lens and the focal length value F of the entire group of the optical lens satisfy: F23 / F≤-0.5.

[0020] Furthermore, the focal length value F1 of the first lens and the focal length value F of the entire optical lens group satisfy: F1 / F≥-8.

[0021] Furthermore, the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the entire focal length value F of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.2.

[0022] Further, the second lens and the third lens are cemented to form a first cemented lens, and the curvature radius Rj1 of the cemented surface of the first cemented lens and the clear aperture Φj1 of the cemented surface of the first cemented lens satisfy: |Rj1| / (Φj1 / 2)≤5.

[0023] According to another aspect of the present invention, there is provided an optical lens, comprising: a first lens, the first lens having negative optical power; a second lens, the second lens having negative optical power; a third lens, the third lens having positive optical power; a fourth lens, the fourth lens having positive optical power; a fifth lens, the fifth lens having optical power; a sixth lens, the sixth lens having optical power; a seventh lens, the seventh lens having optical power; a distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following condition: d7 / TTL≥0.12 with respect to the total optical length TTL of the optical lens.

[0024] Furthermore, the first side surface of the first lens is convex, and the second side surface of the first lens is concave; and / or the first side surface of the second lens and the second side surface of the second lens are both concave; and / or the first side surface of the third lens and the second side surface of the third lens are both convex; and / or the second lens and the third lens are cemented lenses.

[0025] Furthermore, the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface or a concave surface.

[0026] Further, the fifth lens and the sixth lens are a cemented lens, the fifth lens has positive focal power, the first side surface of the fifth lens is convex, the second side surface of the fifth lens is convex, and the sixth lens has negative focal power, the second side surface of the sixth lens is convex, and the first side surface of the sixth lens is concave; or the fifth lens has negative focal power, the first side surface of the fifth lens is convex, the second side surface of the fifth lens is concave, the sixth lens has positive focal power, the second side surface of the sixth lens is convex, and the first side surface of the sixth lens is convex.

[0027] Further, the seventh lens has negative optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave; or the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is concave; or the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex; or the seventh lens has positive optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex.

[0028] Further, the seventh lens is an aspherical lens; and / or at least one of the first side surface of the seventh lens and the second side surface of the seventh lens has an inflection point.

[0029] Furthermore, the optical lens also includes a stop, and the stop is located between the fourth lens and the fifth lens.

[0030] Furthermore, a distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following relation: d11 / TTL≥0.05.

[0031] Furthermore, the optical back focus BFL of the optical lens and the total optical length TTL of the optical lens satisfy: BFL / TTL≥0.02.

[0032] Furthermore, the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total optical length TTL of the optical lens satisfy: TTL / H / FOV≤0.1.

[0033] Furthermore, the focal length F3 of the third lens element and the focal length F of the entire optical lens group satisfy: |F3 / F|≤3.

[0034] Further, a curvature radius R7 of the first side surface of the fourth lens and a curvature radius R8 of the second side surface of the fourth lens satisfy: |R7 / R8|≤2.5.

[0035] Furthermore, the middle thickness d3 of the second lens, the middle thickness d4 of the third lens and the total optical length TTL of the optical lens satisfy: (d3+d4) / TTL≥0.05.

[0036] Furthermore, the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the entire focal length value F of the optical lens satisfy: (H / 2) / (F*tan(θ / 2)≥0.6.

[0037] Furthermore, the focal length value F23 of the cemented lens formed by the second lens and the third lens and the focal length value F of the entire group of the optical lens satisfy: F23 / F≤-0.5.

[0038] Furthermore, the focal length value F1 of the first lens and the focal length value F of the entire optical lens group satisfy: F1 / F≥-8.

[0039] Further, the radius of curvature R11 of the second side surface of the sixth lens satisfies the following relationship with the whole group focal length value F of the optical lens: R11 / F≤-0.001; and / or the whole group focal length value F of the optical lens satisfies the following relationship with the entrance pupil diameter ENPD of the optical lens: F / ENPD≤2.0; and / or the total optical length TTL of the optical lens satisfies the following relationship with the image height H corresponding to the maximum field angle of the optical lens: TTL / (H / 2)≥5; and / or the clear aperture D13 of the second side surface of the seventh lens satisfies the following relationship with the image height H corresponding to the maximum field angle of the optical lens: D13 / H≥0.7; and / or the maximum opening angle arctan(1 / K(S2) of the second side surface of the first lens satisfies the following relationship with ... The curvature radius R2 of the surface, the clear aperture D1 of the first side surface of the first lens and the clear aperture D2 of the second side surface of the first lens satisfy: (R1 / D1) / (R2 / D2)≤4; and / or the curvature radius R2 of the second side surface of the first lens and the curvature radius R3 of the first side surface of the second lens satisfy: (R2-R3) / (R2+R3)≤-2; and / or the radian value θ of the maximum field of view angle of the optical lens, the image height H corresponding to the maximum field of view angle of the optical lens and the whole group focal length value F of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.2; and / or the second lens and the third lens are cemented into a first cemented lens, and the curvature radius Rj1 of the cemented surface of the first cemented lens and the clear aperture Φj1 of the cemented surface of the first cemented lens satisfy: |Rj1| / (Φj1 / 2)≤5.

[0040] According to another aspect of the present invention, there is provided an optical lens, comprising: a first lens, the first lens having negative optical power, and a second side surface of the first lens being a concave surface; a second lens, the second lens having negative optical power, and a first side surface of the second lens being a concave surface; a third lens, the third lens having positive optical power, and a second side surface of the third lens being a convex surface; a fourth lens, the fourth lens having positive optical power, and a first side surface of the fourth lens being a convex surface; a fifth lens, the fifth lens having optical power, and a first side surface of the fifth lens being a convex surface; a sixth lens, the sixth lens having optical power; and a seventh lens, the seventh lens having optical power. It has optical power; wherein the optical power of the fifth lens and the sixth lens are opposite in positive and negative; the distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following condition, and the total optical length TTL of the optical lens satisfies the following condition: d11 / TTL≥0.03; the distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following condition, and the total optical length TTL of the optical lens satisfies the following condition: d7 / TTL≥0.09; the focal length F7 of the seventh lens satisfies the following condition, and the entire group focal length value F of the optical lens satisfies the following condition: |F7 / F|≥2.5.

[0041] Furthermore, the first side surface of the first lens is a convex surface, and the second side surface of the second lens is a concave surface.

[0042] Furthermore, the first side surface of the first lens is a concave surface, and the second side surface of the second lens is a convex surface.

[0043] Furthermore, the first side surface of the third lens is a convex surface.

[0044] Furthermore, the second side surface of the fourth lens is a convex surface or a concave surface.

[0045] Further, the fifth lens has negative focal power, the first side surface of the fifth lens is convex, the second side surface of the fifth lens is concave, and the sixth lens has positive focal power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex; or the fifth lens has positive focal power, the first side surface of the fifth lens is convex, the second side surface of the fifth lens is convex, and the sixth lens has negative focal power, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is convex; or the fifth lens has positive focal power, the first side surface of the fifth lens is convex, the second side surface of the fifth lens is convex, and the sixth lens has negative focal power, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave.

[0046] Further, the seventh lens has negative optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave; or the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is concave; or the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex; or the seventh lens has positive optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex; or the seventh lens has positive optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave.

[0047] Further, the focal length value F1 of the first lens satisfies the following relation with the focal length value F of the entire group of the optical lens: -3.6≤F1 / F≤-1.7; and / or the focal length value F2 of the second lens satisfies the following relation with the focal length value F of the entire group of the optical lens: -3≤F2 / F≤-0.3; and / or the curvature radius R1 of the first side surface of the first lens and the curvature radius R2 of the second side surface of the first lens satisfy the following relation: 0.5≤R1 / R2≤4; and / or the curvature radius R3 of the first side surface of the second lens and the curvature radius R4 of the second side surface of the second lens satisfy the following relation: -2≤R3 / R4<0.

[0048] Further, the focal length value F1 of the first lens satisfies the following relation with the focal length value F of the entire group of the optical lens: -2≤F1 / F≤-0.4; and / or the focal length value F2 of the second lens satisfies the following relation with the focal length value F of the entire group of the optical lens: -6.5≤F2 / F≤-4.5; and / or the radius of curvature R1 of the first side surface of the first lens and the radius of curvature R2 of the second side surface of the first lens satisfy the following relation: -8≤R1 / R2≤-4; and / or the radius of curvature R3 of the first side surface of the second lens and the radius of curvature R4 of the second side surface of the second lens satisfy the following relation: 0<R3 / R4≤2.

[0049] Furthermore, the focal length value F1 of the first lens, the focal length value F2 of the second lens, and the focal length value F of the entire optical lens group satisfy: -3≤MAX[F1, F2] / F.

[0050] Furthermore, the focal length value F3 of the third lens element and the focal length value F of the entire optical lens group satisfy: F3 / F≤3.5.

[0051] Furthermore, the focal length value F2 of the second lens and the focal length value F3 of the third lens satisfy: -3≤F2 / F3≤-0.1.

[0052] Furthermore, the focal length value F4 of the fourth lens element and the focal length value F of the entire optical lens group satisfy: 0.5≤F4 / F≤4.

[0053] Furthermore, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: -8≤F5 / F6≤-0.1.

[0054] Furthermore, a distance d23 on the optical axis from the second side surface of the second lens to the first side surface of the third lens and an axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens satisfy: d23 / TL≤0.1.

[0055] Furthermore, the second lens is spaced apart from the third lens, and a distance d23 on the optical axis from the second side surface of the second lens to the first side surface of the third lens and an axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens satisfy: 0.01≤d23 / TL≤0.07.

[0056] Furthermore, the second lens and the third lens are bonded together.

[0057] Furthermore, a curvature radius R6 of the second side surface of the third lens and a curvature radius R7 of the first side surface of the fourth lens satisfy: -2.5≤R6 / R7≤-0.1.

[0058] Furthermore, a distance d12 on the optical axis from the second side surface of the first lens to the first side surface of the second lens and an axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens satisfy: d12 / TL≤0.17.

[0059] Furthermore, a combined focal length value F56 of the fifth lens and the sixth lens and a focal length value F of the entire optical lens group satisfy: 0<F56 / F≤7.

[0060] Furthermore, an axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens and a center thickness d3 of the second lens satisfy: TL / d3≥10.

[0061] Furthermore, an axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens and a distance d34 on the optical axis from the second side surface of the third lens to the first side surface of the fourth lens satisfy: 25≤TL / d34.

[0062] Furthermore, a curvature radius R11 of the second side surface of the sixth lens element satisfies the relationship between the entire focal length F of the optical lens set and -15≤R11 / F≤-2.5.

[0063] Further, the optical lens satisfies at least one of the following conditional expressions: R11 / F≤-0.01, d11 / TTL≥0.05, 0.055≤d11 / TTL≤0.2, d7 / TTL≥0.1, 0.1≤d7 / TTL≤0.4, BFL / TTL≥0.02, BFL / TTL≥0.05, TTL / H / FOV≤0.1, TTL / H / FOV≤0.08, F / ENPD≤2.0, F / ENPD≤1.8, TTL / (H / 2)≥5, TTL / (H / 2)≥6.5, D13 / H≥0.7, D13 / H≥0.85, F3 / F≤3, |R7 / R8|≤2.5, |R7 / R8|≤1.8, arctan(1 / K(S2) ≥30°, arctan(1 / K(S2)≥35°, (d3+d4) / TTL≥0.05, (d3+d4) / TTL≥0.08, (H / 2) / ( F*tan(θ / 2)≥0.6, (H / 2) / (F*tan(θ / 2)≥0.75, (R1 / D1) / (R2 / D2)≤4, (R1 / D1) / (R 2 / D2)≤2, (R2-R3) / (R2+R3)≤-2, (R2-R3) / (R2+R3)≤-3, F23 / F≤-0.5, F23 / F≤-1 .5. F1 / F≥-8, F1 / F≥-4, |(HF*θ) / (F*θ)|≤0.2, |(HF*θ) / (F*θ)|≤0.1, |Rj1| / (Φj 1 / 2)≤5, 0≤d23 / TL≤0.08, -8≤F2 / F, -7≤F2 / F≤-0.2, -2.1≤MAX[F1, F2] / F≤-0.1, |F7 / F|≥3.5, d12 / TL≤0.16, 0.5≤F56 / F≤6.2, 1.2≤F4 / F≤3, -4≤F5 / F6≤-0.2, -2≤F2 / F3≤-0.2, TL / d3≥13, 28≤TL / d34≤400, -2≤R6 / R7≤-0.2, wherein R11 is the radius of curvature of the second side surface of the sixth lens, F is the focal length of the entire optical lens set, d11 is the distance from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens, TTL is the total optical length of the optical lens, d7 is the distance from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens, BFL is the optical back focus of the optical lens, FOV is the maximum field of view of the optical lens, H is the image height corresponding to the maximum field of view of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D13 is the clear aperture of the second side surface of the seventh lens, F3 is the focal length of the third lens, R7 is the radius of curvature of the first side surface of the fourth lens, R8 is the radius of curvature of the second side surface of the fourth lens, arctan(1 / K(S2) is the maximum opening angle of the second side surface of the first lens, d3 is the middle thickness of the second lens, d4 is the middle thickness of the third lens, θ is the radian value of the maximum field of view of the optical lens, R1 is the radius of curvature of the first side surface of the first lens, R2 is the half curvature of the second side surface of the first lens diameter, D1 is the light-clearing diameter of the first side surface of the first lens, D2 is the light-clearing diameter of the second side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, F23 is the focal length of the cemented lens composed of the second lens and the third lens, F1 is the focal length of the first lens, Rj1 is the curvature radius of the cemented surface of the first cemented lens, Φj1 is the light-clearing diameter of the cemented surface of the first cemented lens, d23 is the distance from the second side surface of the second lens to the first side surface of the third lens on the optical axis, TL is the first side surface of the first lens d12 is the distance on the optical axis from the second side surface of the first lens to the first side surface of the second lens, F56 is the combined focal length of the fifth lens and the sixth lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F6 is the focal length of the sixth lens, d34 is the distance on the optical axis from the second side surface of the third lens to the first side surface of the fourth lens, and R6 is the radius of curvature of the second side surface of the third lens.

[0064] According to yet another aspect of the present invention, there is provided an electronic device comprising the above-mentioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

[0065] The optical lens according to the embodiment of the present application includes seven lenses with optical power, the first lens has negative optical power, the second side surface of the first lens is concave, the second lens has negative optical power, and the first side surface of the second lens is concave; the third lens has positive optical power, the second side surface of the third lens is convex, the fourth lens has positive optical power, the first side surface of the fourth lens is convex, the fifth lens has optical power, the first side surface of the fifth lens is convex, the sixth lens has optical power, and the seventh lens has optical power; wherein the optical power of the fifth lens and the sixth lens are opposite in positive and negative; the distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following condition: d11 / TTL≥0.03; the distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following condition: d7 / TTL≥0.09; the focal length F7 of the seventh lens satisfies the following condition: |F7 / F|≥2.5 with respect to the focal length value F of the entire group of the optical lens. The optical lens can have the characteristics of high imaging quality, miniaturization, and clear imaging under large temperature differences.

[0066] Furthermore, the optical lens of the present application controls the first lens to have a negative optical focal length, the second lens to have a negative optical focal length, and controls the distance d12 on the optical axis from the second side surface of the first lens to the first side surface of the second lens, and the on-axis distance TL from the first side surface of the first lens to the second side surface of the seventh lens to satisfy: d12 / TL≤0.17, which is beneficial to reducing the distance between the first lens and the second lens and achieving miniaturization.

[0067] Furthermore, the optical lens of the present application controls the third lens to have positive focal power, the fourth lens to have positive focal power, and controls the air interval d34 between the third lens and the fourth lens on the optical axis and the axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens to satisfy: 25≤TL / d34, and the focal length value F3 of the third lens and the focal length value F of the entire group of the optical lens to satisfy: F3 / F≤3.5. The optical lens can be made miniaturized and have high resolution.

[0068] Furthermore, the distance d23 on the optical axis from the second side surface of the second lens to the first side surface of the third lens and the on-axis distance TL from the first side surface of the first lens to the second side surface of the seventh lens satisfy: d23 / TL≤0.1. The second lens and the third lens are spaced or glued together. When the second lens and the third lens are spaced apart, they satisfy: 0.01≤d23 / TL≤0.07. The spaced arrangement between the second and third lenses is conducive to achieving thermal compensation of the optical lens and reducing the sensitivity of the second lens and the third lens. The second lens and the third lens are glued together, which is conducive to achieving the characteristics of both miniaturization and high resolution of the lens.

[0069] According to the technical solution of the present invention, the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the first lens has a negative optical power, a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface; the second lens has a negative optical power, and a first side surface of the second lens and a second side surface of the second lens are both concave surfaces; the third lens has a positive optical power, and a first side surface of the third lens and a second side surface of the third lens are both convex surfaces; the fourth lens has a positive optical power, and a first side surface of the fourth lens is a convex surface; the fifth lens has an optical power, and a first side surface of the fifth lens is a convex surface; the sixth lens has an optical power, and a second side surface of the sixth lens is a convex surface; and the seventh lens has an optical power.

[0070] The first lens has a negative optical focal length and has a divergent effect on the light passing through the first lens. Under the same field of view angle, the light emitted through the second side of the first lens can make the rear optical system have a larger light receiving surface. Setting the first side of the first lens as a convex surface is conducive to the first lens collecting large field of view light to enter the rear optical system. At the same time, when encountering rainy and snowy weather, it is conducive to the sliding of water droplets and reducing the impact on imaging. Setting the second side of the first lens as a concave surface quickly diverges the large-angle light passing through the first side of the first lens, which is conducive to the rear optical system to correct large-angle aberrations and achieve high resolution. The first lens is preferably made of a material with a high refractive index, which is conducive to reducing the front port diameter and improving the imaging quality of the optical lens.

[0071] The second lens has negative focal length and is biconcave in shape. It receives the light emitted by the first lens, which can make the light emit smoothly, which is beneficial to improve aberrations and increase the imaging quality of the optical lens. In addition, the second lens is glued to the third lens, which can smoothly transition the light emitted by the first lens to the imaging surface, reduce the total optical length of the optical lens, so that various aberrations of the optical lens can be fully corrected, and under the premise of compact structure, the resolution is improved, distortion, CRA and other optical properties are optimized, so as to achieve high resolution and miniaturization at the same time.

[0072] The third lens has positive focal length and converges light. The third lens is bonded to the second lens, which helps reduce the aberration of the optical lens and improve the imaging quality of the optical lens.

[0073] The fourth lens has positive focal length, and the first side surface of the fourth lens is a convex surface, which has a convergence effect on light. Reasonable setting of the focal length of the fourth lens can further reduce aberrations and improve the imaging quality of the optical lens. The second side surface of the fourth lens is set as a convex surface, so that the edge field light is deflected in the direction of the central axis after passing through the second side surface of the fourth lens, which is conducive to reducing the aperture of the rear end of the optical lens and is conducive to the miniaturization of the optical lens. The shape of the fourth lens can be a meniscus convex to the first side, which is conducive to collecting the light emitted by the third lens. The positive focal length is conducive to the convergence of light, so that the light trend smoothly transitions to the rear optical system, reduces the height of the light incident to the rear, and is conducive to reducing the aperture of the rear end lens, which is conducive to the miniaturization of the optical lens.

[0074] The fifth lens may have positive focal power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a convex surface. The fifth lens has a converging effect on light, and by controlling the focal length of the fifth lens, the aberration of the optical lens can be effectively corrected, the image quality of the optical lens can be improved, and the optical performance such as distortion and CRA can be optimized.

[0075] The fifth lens may also have negative optical power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. The fifth lens has negative optical power and has a divergent effect on light, so that the subsequent optical system has a larger light receiving surface, reasonably distributes optical power, reduces aberrations, and improves optical performance.

[0076] The sixth lens may have a negative optical power, the first side surface of the sixth lens is a concave surface, and the second side surface of the sixth lens is a convex surface. The sixth lens has a divergent effect on light, and a reasonable setting of the optical power of the sixth lens can further reduce aberrations and improve the imaging quality of the optical lens. In addition, the fifth lens and the sixth lens are glued together to smoothly transition the light emitted by the fourth lens to the imaging surface, reducing the total length of the optical lens. At the same time, various aberrations of the optical lens are fully corrected, and the resolution is improved while ensuring a compact structure, and optical properties such as distortion and CRA are optimized.

[0077] The sixth lens may also have positive focal length, the first side of the sixth lens is a convex surface, and the second side of the sixth lens is a convex surface. The sixth lens has a converging effect, and a reasonable setting of the focal length of the sixth lens can further deflect the light in the direction of the optical axis, which is beneficial to reducing the diameter of the back port. In addition, the fifth lens and the sixth lens are glued together to smoothly transition the light emitted by the fourth lens to the imaging surface, reducing the total length of the optical lens. At the same time, various aberrations of the optical lens are fully corrected, and the resolution is improved while ensuring a compact structure, and the optical performance such as distortion and CRA is optimized.

[0078] The seventh lens may have negative optical power, the first side surface of the seventh lens may be a convex surface, and the second side surface of the seventh lens may be a concave surface. The seventh lens is arranged to be convex-concave, and the seventh lens is a meniscus convex toward the first side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, so that the angle of the light to the image plane meets the requirements of CRA, and improves the resolution and illumination of the optical lens.

[0079] The seventh lens may have negative optical power, the first side surface of the seventh lens may be a concave surface, and the second side surface of the seventh lens may be a concave surface. The seventh lens is a biconcave lens, which is conducive to receiving the light emitted by the sixth lens. By controlling the focal length of the seventh lens, the aberration of the optical lens can be effectively corrected, the image quality can be improved, and the optical performance such as distortion and CRA can be optimized.

[0080] The seventh lens may have a negative focal length, the first side surface of the seventh lens may be a concave surface, and the second side surface of the seventh lens may be a convex surface. The seventh lens is a meniscus convex toward the second side, which is conducive to receiving the light emitted by the sixth lens. The negative focal length is conducive to the divergence of light, increasing the image surface of the optical lens, and achieving a large edge angle resolution.

[0081] The seventh lens has positive focal power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The seventh lens has positive focal power, which is conducive to light convergence, and the double convex shape is more conducive to light entering the rear optical system, which is conducive to correcting the aberration of the optical lens. At the same time, the seventh lens can lower the height of the light incident on the subsequent optical system and reduce the rear port diameter of the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0083] Figure 1 A schematic diagram of the structure of an optical lens according to Example 1 of the present invention is shown;

[0084] Figure 2 A schematic diagram of the optical lens structure of Example 2 of the present invention is shown;

[0085] Figure 3 A schematic diagram of the structure of an optical lens according to Example 3 of the present invention is shown;

[0086] Figure 4 A schematic diagram of the structure of an optical lens according to Example 4 of the present invention is shown;

[0087] Figure 5 A schematic diagram of the structure of an optical lens according to Example 5 of the present invention is shown;

[0088] Figure 6 A schematic diagram of the structure of an optical lens according to Example 6 of the present invention is shown;

[0089] Figure 7 A schematic diagram of the optical lens structure of Example 7 of the present invention is shown;

[0090] Figure 8 A schematic diagram of the structure of an optical lens according to Example 8 of the present invention is shown;

[0091] Fig. 9 A schematic diagram of the structure of an optical lens according to Example 9 of the present invention is shown;

[0092] Fig.10 A schematic diagram of the structure of an optical lens according to Example 10 of the present invention is shown;

[0093] Fig.11 A schematic diagram of the structure of an optical lens according to Example 11 of the present invention is shown;

[0094] Fig.12 A schematic diagram of the structure of an optical lens according to Example 12 of the present invention is shown;

[0095] Fig.13 A schematic diagram of the structure of an optical lens according to Example 13 of the present invention is shown;

[0096] Fig.14 A schematic diagram of the structure of an optical lens according to Example 14 of the present invention is shown;

[0097] Fig.15 A schematic diagram of the structure of an optical lens according to Example 15 of the present invention is shown;

[0098] Fig.16 A schematic diagram of the optical lens structure of Example 16 of the present invention is shown;

[0099] Fig.17 A schematic diagram of the structure of an optical lens according to Example 17 of the present invention is shown;

[0100] Fig.18 A schematic diagram of the structure of an optical lens according to Example 18 of the present invention is shown;

[0101] Fig.19 A schematic diagram of the structure of an optical lens according to Example 19 of the present invention is shown;

[0102] Fig. 20 A schematic diagram of the optical lens structure of Example 20 of the present invention is shown.

[0103] The above drawings include the following reference numerals:

[0104] STO, aperture; L1, first lens; S1, first side surface of the first lens; S2, second side surface of the first lens; L2, second lens; S3, first side surface of the second lens; S4, second side surface of the second lens (first side surface of the third lens); L3, third lens; S5, second side surface of the third lens; L4, fourth lens; S6, first side surface of the fourth lens; S7, second side surface of the fourth lens; L5, fifth lens; S8, first side surface of the fifth lens; S10, second side surface of the fifth lens (first side surface of the sixth lens); L6, sixth lens; S11, second side surface of the sixth lens; L7, seventh lens; S12, first side surface of the seventh lens; S13, second side surface of the seventh lens; S14, first side surface of the filter; S15, second side surface of the filter; S16, first side surface of the protective glass; S17, second side surface of the protective glass; IMA, imaging surface. DETAILED DESCRIPTION

[0105] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0106] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0107] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0108] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0109] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0110] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object side is called the first side of the lens, and the surface of each lens close to the image side is called the second side of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of the general knowledge in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial region, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the concave and convex. For the first side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the second side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0111] This application generally protects an ordinary optical lens. In the accompanying drawings, the left side is the object side and the right side is the image side, that is, the first side is the object side and the second side is the image side.

[0112] In an exemplary embodiment, the optical lens provided by the present application can be used as, for example, a vehicle-mounted lens. Light from the object side can form an image on the image side.

[0113] When the optical lens in the present application is applied to a projection lens or a radar transmitting lens, the left side is the imaging side and the right side is the image source side. In an exemplary embodiment, the optical lens provided in the present application can be used as, for example, a projection lens or a laser radar transmitting end lens. In this case, the image side of the optical lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side. The imaging surface of the optical lens is the image source surface.

[0114] In order to solve at least one of the problems of optical lenses in the prior art, namely, high resolution, miniaturization, inability to form clear images when temperature differences are large, and poor imaging quality in weak light environments, the present invention provides an optical lens and an electronic device.

[0115] Embodiment 1

[0116] like Figures 1 to 12As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, the first lens has negative optical power, the first side surface of the first lens is convex, and the second side surface of the first lens is concave; the second lens has negative optical power, the first side surface of the second lens and the second side surface of the second lens are both concave; the third lens has positive optical power, the first side surface of the third lens and the second side surface of the third lens are both convex; the fourth lens has positive optical power, and the first side surface of the fourth lens is convex; the fifth lens has optical power, and the first side surface of the fifth lens is convex; the sixth lens has optical power, and the second side surface of the sixth lens is convex; the seventh lens has optical power.

[0117] The first lens has a negative optical focal length and has a divergent effect on the light passing through the first lens. Under the same field of view angle, the light emitted through the second side of the first lens can make the rear optical system have a larger light receiving surface. Setting the first side of the first lens as a convex surface is conducive to the first lens collecting large field of view light to enter the rear optical system. At the same time, when encountering rainy and snowy weather, it is conducive to the sliding of water droplets and reducing the impact on imaging. Setting the second side of the first lens as a concave surface quickly diverges the large-angle light passing through the first side of the first lens, which is conducive to the rear optical system to correct large-angle aberrations and achieve high resolution. The first lens is preferably made of a material with a high refractive index, which is conducive to reducing the front port diameter and improving the imaging quality of the optical lens.

[0118] The second lens has negative focal length and is biconcave in shape. It receives the light emitted by the first lens, which can make the light emit smoothly, which is beneficial to improve aberrations and increase the imaging quality of the optical lens. In addition, the second lens is glued to the third lens, which can smoothly transition the light emitted by the first lens to the imaging surface, reduce the total optical length of the optical lens, so that various aberrations of the optical lens can be fully corrected, and under the premise of compact structure, the resolution is improved, distortion, CRA and other optical properties are optimized, so as to achieve high resolution and miniaturization at the same time.

[0119] The third lens has positive focal length and converges light. The third lens is bonded to the second lens, which helps reduce the aberration of the optical lens and improve the imaging quality of the optical lens.

[0120] Optionally, the fourth lens has positive focal power, and the first side surface of the fourth lens is a convex surface, which has a convergence effect on light. Reasonable setting of the focal power of the fourth lens can further reduce aberrations and improve the imaging quality of the optical lens. The second side surface of the fourth lens is set as a convex surface, so that the edge field light is deflected toward the direction of the central axis after passing through the second side surface of the fourth lens, which is conducive to reducing the aperture of the rear end of the optical lens and facilitating the miniaturization of the optical lens.

[0121] Optionally, the shape of the fourth lens can be a meniscus convex toward the first side, which is conducive to collecting the light emitted by the third lens. The positive optical focal length is conducive to the convergence of light, so that the light can smoothly transition to the rear optical system, reduce the height of the light incident to the rear, and help reduce the aperture of the rear lens, which is conducive to the miniaturization of the optical lens.

[0122] Optionally, the fifth lens has positive focal power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex. The fifth lens has a converging effect on light, and by controlling the focal length of the fifth lens, the aberration of the optical lens can be effectively corrected, the image quality of the optical lens can be improved, and the optical performance such as distortion and CRA can be optimized.

[0123] Optionally, the fifth lens has negative optical power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. The fifth lens has negative optical power and has a divergent effect on light, so that the subsequent optical system has a larger light receiving surface, reasonably distributes optical power, reduces aberrations, and improves optical performance.

[0124] Optionally, the sixth lens has a negative optical power, the first side of the sixth lens is a concave surface, and the second side of the sixth lens is a convex surface. The sixth lens has a divergent effect on light, and a reasonable setting of the optical power of the sixth lens can further reduce aberrations and improve the imaging quality of the optical lens. In addition, the fifth lens and the sixth lens are glued together to smoothly transition the light emitted by the fourth lens to the imaging surface, reducing the total length of the optical lens. At the same time, various aberrations of the optical lens are fully corrected, and the resolution is improved while ensuring a compact structure, and optical properties such as distortion and CRA are optimized.

[0125] Optionally, the sixth lens has positive focal length, the first side of the sixth lens is convex, and the second side of the sixth lens is convex. The sixth lens has a converging effect, and a reasonable setting of the focal length of the sixth lens can further deflect the light in the direction of the optical axis, which is beneficial to reducing the diameter of the back port. In addition, the fifth lens and the sixth lens are glued together to smoothly transition the light emitted by the fourth lens to the imaging surface, reducing the total length of the optical lens. At the same time, various aberrations of the optical lens are fully corrected, and the resolution is improved while ensuring a compact structure, and the optical performance such as distortion and CRA is optimized.

[0126] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave. The seventh lens is arranged to be convex-concave, and the seventh lens is a meniscus convex toward the first side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, so that the angle of the light to the image plane meets the requirements of CRA, and improves the resolution and illumination of the optical lens.

[0127] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is concave. The seventh lens is a double concave lens, which is conducive to receiving the light emitted by the sixth lens. By controlling the focal length of the seventh lens, the aberration of the optical lens can be effectively corrected, the image quality can be improved, and the optical performance such as distortion and CRA can be optimized.

[0128] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex. The seventh lens is a meniscus convex to the second side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, increasing the image surface of the optical lens, and achieving a large edge angle resolution.

[0129] Optionally, the seventh lens has positive focal length, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The seventh lens has positive focal length, which is conducive to light convergence, and the double convex shape is more conducive to light entering the rear optical system, which is conducive to correcting the aberration of the optical lens. At the same time, the seventh lens can lower the height of the light incident on the subsequent optical system and reduce the rear port diameter of the optical lens.

[0130] In this embodiment, the seventh lens is an aspherical lens. Setting the seventh lens as an aspherical lens is beneficial to correcting the aberration of the optical lens, improving the resolution of the optical lens, and reducing the aberration of a large field of view.

[0131] In this embodiment, the optical lens further includes a stop, which is located between the fourth lens and the fifth lens. This arrangement is conducive to effectively converging the light entering the optical lens, reducing the lens aperture at the front end of the optical lens, and reducing the assembly sensitivity of the optical lens.

[0132] In this embodiment, at least one of the first side surface of the seventh lens and the second side surface of the seventh lens has an inflection point. This arrangement is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution.

[0133] In this embodiment, the second lens and the third lens are cemented lenses, and the fifth lens and the sixth lens are cemented lenses. The cemented lens can effectively eliminate the influence of ghost images on the optical lens, so that the optical lens has a higher resolution on the basis of eliminating ghost images. In addition, the cemented lens can fully correct various aberrations of the optical lens, improve the resolution, and optimize the optical properties such as distortion and CRA under the premise of compact structure. The negative lens in the cemented lens has a higher refractive index than the positive lens in the cemented lens, so that the light can be effectively and smoothly converged, so that the light can reach the imaging surface smoothly, reducing the overall weight and cost. The cemented lens can also reduce the light loss caused by reflection between lenses. The combination of high and low refractive indices is also conducive to the rapid transition of the light of the front system, increasing the aperture of the aperture, increasing the amount of light passing, and helping to improve the imaging quality in a weak light environment. The use of a cemented lens can also reduce the air gap between the two lenses, making the optical lens more compact as a whole, while reducing the tolerance sensitivity problems such as overall eccentricity caused by the lens during the assembly process.

[0134] In this embodiment, the radius of curvature R11 of the second side surface of the sixth lens satisfies the following relationship with the focal length F of the entire optical lens set: R11 / F≤-0.001. The second side surface of the sixth lens is a convex surface, and the light formed when reflecting from the color filter and the chip protection glass is divergent light, which is beneficial to reduce ghost images. Preferably, R11 / F≤-0.01.

[0135] In this embodiment, the distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following condition: d11 / TTL≥0.05. The distance between the sixth lens and the seventh lens is limited to a reasonable range, which increases the optical path of the reflected light between the lenses, and is conducive to moving the focus point of the ghost image away from the image plane and reducing the ghost image. Preferably, d11 / TTL≥0.08.

[0136] In this embodiment, the distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following condition: d7 / TTL≥0.12 with respect to the total optical length TTL of the optical lens. The fourth lens is a positive lens, and a larger interval is set between the fourth lens and the fifth lens, which is beneficial to reducing the diameter of the rear port while effectively converging the light. Preferably, d7 / TTL≥0.15.

[0137] In this embodiment, the optical back focus BFL of the optical lens and the total optical length TTL of the optical lens satisfy: BFL / TTL≥0.02. When the total optical length of the optical lens is the same, the optical lens has a longer optical back focus to meet the special requirements of the optical lens for a long back focus, and space can also be reserved for the installation and focusing of optical elements to avoid interference with the mechanism. Preferably, BFL / TTL≥0.05.

[0138] In this embodiment, the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total optical length TTL of the optical lens satisfy: TTL / H / FOV≤0.1. When the image plane and the field of view are the same, the total optical length of the optical lens is effectively limited, which is conducive to miniaturization of the optical lens. Preferably, TTL / H / FOV≤0.08.

[0139] In this embodiment, the focal length value F of the entire optical lens group and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤2.0. This setting enables the optical lens to have a small FNO, which is beneficial to increase the light throughput of the optical lens, improve the relative illumination of the optical lens, and facilitate clear imaging of the optical lens in a weak light environment. Preferably, F / ENPD≤1.8.

[0140] In this embodiment, the total optical length TTL of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: TTL / (H / 2)≥5. Under the condition that the image height remains unchanged and miniaturization is met, the total optical length of the optical lens is controlled to reduce the focal length allocated to each lens, which is beneficial to correcting the aberration of the optical lens, thereby improving the resolution. Preferably, TTL / (H / 2)≥6.5.

[0141] In this embodiment, the clear aperture D13 of the second side surface of the seventh lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: D13 / H≥0.7. This arrangement makes the last lens closer to the image height under the same imaging plane and the same image height, which is conducive to achieving a small CRA. Preferably, D13 / H≥0.85.

[0142] In this embodiment, the focal length F3 of the third lens and the focal length F of the entire optical lens group satisfy: |F3 / F|≤3. The third lens has positive focal power and has a positive effect on thermal compensation. When the focal length is small, it is beneficial to reduce the image plane deviation under high temperature. Preferably, |F3 / F|≤2.

[0143] In this embodiment, the curvature radius R7 of the first side surface of the fourth lens and the curvature radius R8 of the second side surface of the fourth lens satisfy: |R7 / R8|≤2.5. Controlling the curvature radii of the first side surface and the second side surface of the fourth lens within a reasonable range is conducive to collecting more light and increasing the light transmission capacity of the optical lens. Preferably, |R7 / R8|≤1.8.

[0144] In this embodiment, the maximum opening angle of the second side surface of the first lens satisfies: arctan(1 / K(S2)≥40. The second side surface of the first lens has a larger opening angle, which is beneficial for the large-angle peripheral light entering through the first lens to enter the rear optical system, thereby improving the imaging quality of the optical lens. Preferably, arctan(1 / K(S2)≥45.

[0145] In this embodiment, the middle thickness d3 of the second lens, the middle thickness d4 of the third lens and the total optical length TTL of the optical lens satisfy: (d3+d4) / TTL≥0.05. Properly increasing the center thickness of the cemented lens is conducive to enhancing the ability to control light, and is conducive to controlling more light to enter the rear optical system and improving relative illumination. Preferably, (d3+d4) / TTL≥0.08.

[0146] In this embodiment, the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the entire focal length value F of the optical lens satisfy: (H / 2) / (F*tan(θ / 2)≥0.6. This setting makes the actual image height closer to the ideal image height, the distortion of the optical lens is small, and it is conducive to achieving a large angle resolution of the edge field of view. Preferably, (H / 2) / (F*tan(θ / 2)≥0.75.

[0147] In this embodiment, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the clear aperture D1 of the first side surface of the first lens, and the clear aperture D2 of the second side surface of the first lens satisfy: (R1 / D1) / (R2 / D2)≤4. This arrangement makes the aberration of the radius of curvature of the first side surface and the second side surface of the first lens smaller, and the apertures of the two surfaces are closer, which is conducive to reducing the divergence of light and lowering the light, thereby making the front aperture of the optical lens smaller. Preferably, (R1 / D1) / (R2 / D2)≤2.

[0148] In this embodiment, the curvature radius R2 of the second side surface of the first lens and the curvature radius R3 of the first side surface of the second lens satisfy: (R2-R3) / (R2+R3)≤-2. This arrangement is conducive to correcting the aberration of the optical lens, and ensures that when the light emitted from the first lens is incident on the first side surface of the second lens, the incident light is relatively gentle, thereby reducing the tolerance sensitivity of the optical lens. Preferably, (R2-R3) / (R2+R3)≤-4.

[0149] In this embodiment, the focal length F23 of the cemented lens composed of the second lens and the third lens and the focal length F of the entire optical lens group satisfy: F23 / F≤-0.5. This arrangement is conducive to controlling the trend of light between the first lens and the fourth lens, reducing the aberration caused by the large-angle light entering through the first lens, and is conducive to compact lens structure and miniaturization of the optical lens. Preferably, F23 / F≤-1.5.

[0150] In this embodiment, the focal length value F1 of the first lens and the focal length value F of the entire optical lens group satisfy: F1 / F≥-8. Reasonable allocation of the focal length of the first lens is conducive to collecting light with a large field angle into the optical system. Preferably, F1 / F≥-4.

[0151] In this embodiment, the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the focal length value F of the entire group of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.2. When the field angle of the optical lens and the size of the imaging surface remain unchanged, it is beneficial to reduce the focal length of the optical lens, so that the optical lens has small distortion, and it is beneficial to improve the imaging quality of the optical lens. Preferably, |(HF*θ) / (F*θ)|≤0.1.

[0152] In this embodiment, the second lens and the third lens are bonded to form a first bonded lens, and the radius of curvature Rj1 of the bonding surface of the first bonded lens and the aperture Φj1 of the bonding surface of the first bonded lens satisfy: |Rj1| / (Φj1 / 2)≤5. This arrangement is conducive to controlling the size of the opening angle of the bonding surface of the first lens. A smaller opening angle is not conducive to correcting aberrations, and a larger opening angle is not conducive to large field imaging. By controlling |Rj1| / (Φj1 / 2) within a reasonable range, the generation of high-order aberrations can be effectively controlled, which is conducive to improving the light transmission and resolution of the entire optical lens, and effectively reducing the requirements for the bonding process of the bonding surface. Preferably, |Rj1| / (Φj1 / 2)≤3.5.

[0153] Embodiment 2

[0154] like Figures 1 to 12As shown, the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, the first lens has a negative optical power; the second lens has a negative optical power; the third lens has a positive optical power; the fourth lens has a positive optical power; the fifth lens has an optical power; the sixth lens has an optical power; the seventh lens has an optical power; the distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens and the total optical length TTL of the optical lens satisfy: d7 / TTL≥0.12. The fourth lens is a positive lens, and a larger interval is set between the fourth lens and the fifth lens, which is conducive to reducing the diameter of the back port while effectively converging the light. Preferably, d7 / TTL≥0.15.

[0155] The first lens has a negative optical focal length and has a divergent effect on the light passing through the first lens. Under the same field of view angle, the light emitted through the second side of the first lens can make the rear optical system have a larger light receiving surface. Setting the first side of the first lens as a convex surface is conducive to the first lens collecting large field of view light to enter the rear optical system. At the same time, when encountering rainy and snowy weather, it is conducive to the sliding of water droplets and reducing the impact on imaging. Setting the second side of the first lens as a concave surface quickly diverges the large-angle light passing through the first side of the first lens, which is conducive to the rear optical system to correct large-angle aberrations and achieve high resolution. The first lens is preferably made of a material with a high refractive index, which is conducive to reducing the front port diameter and improving the imaging quality of the optical lens.

[0156] The second lens has negative focal length and is biconcave in shape. It receives the light emitted by the first lens, which can make the light emit smoothly, which is beneficial to improve aberrations and increase the imaging quality of the optical lens. In addition, the second lens is glued to the third lens, which can smoothly transition the light emitted by the first lens to the imaging surface, reduce the total optical length of the optical lens, so that various aberrations of the optical lens can be fully corrected, and under the premise of compact structure, the resolution is improved, distortion, CRA and other optical properties are optimized, so as to achieve high resolution and miniaturization at the same time.

[0157] The third lens has positive focal length and converges light. The third lens is bonded to the second lens, which helps reduce the aberration of the optical lens and improve the imaging quality of the optical lens.

[0158] Optionally, the fourth lens has positive focal power, and the first side surface of the fourth lens is a convex surface, which has a convergence effect on light. Reasonable setting of the focal power of the fourth lens can further reduce aberrations and improve the imaging quality of the optical lens. The second side surface of the fourth lens is set as a convex surface, so that the edge field light is deflected toward the direction of the central axis after passing through the second side surface of the fourth lens, which is conducive to reducing the aperture of the rear end of the optical lens and facilitating the miniaturization of the optical lens.

[0159] Optionally, the shape of the fourth lens can be a meniscus convex toward the first side, which is conducive to collecting the light emitted by the third lens. The positive optical focal length is conducive to the convergence of light, so that the light can smoothly transition to the rear optical system, reduce the height of the light incident to the rear, and help reduce the aperture of the rear lens, which is conducive to the miniaturization of the optical lens.

[0160] Optionally, the fifth lens has positive focal power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is convex. The fifth lens has a converging effect on light, and by controlling the focal length of the fifth lens, the aberration of the optical lens can be effectively corrected, the image quality of the optical lens can be improved, and the optical performance such as distortion and CRA can be optimized.

[0161] Optionally, the fifth lens has negative optical power, the first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave. The fifth lens has negative optical power and has a divergent effect on light, so that the subsequent optical system has a larger light receiving surface, reasonably distributes optical power, reduces aberrations, and improves optical performance.

[0162] Optionally, the sixth lens has a negative optical power, the first side of the sixth lens is a concave surface, and the second side of the sixth lens is a convex surface. The sixth lens has a divergent effect on light, and a reasonable setting of the optical power of the sixth lens can further reduce aberrations and improve the imaging quality of the optical lens. In addition, the fifth lens and the sixth lens are glued together to smoothly transition the light emitted by the fourth lens to the imaging surface, reducing the total length of the optical lens. At the same time, various aberrations of the optical lens are fully corrected, and the resolution is improved while ensuring a compact structure, and optical properties such as distortion and CRA are optimized.

[0163] Optionally, the sixth lens has positive focal length, the first side of the sixth lens is convex, and the second side of the sixth lens is convex. The sixth lens has a converging effect, and a reasonable setting of the focal length of the sixth lens can further deflect the light in the direction of the optical axis, which is beneficial to reducing the diameter of the back port. In addition, the fifth lens and the sixth lens are glued together to smoothly transition the light emitted by the fourth lens to the imaging surface, reducing the total length of the optical lens. At the same time, various aberrations of the optical lens are fully corrected, and the resolution is improved while ensuring a compact structure, and the optical performance such as distortion and CRA is optimized.

[0164] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave. The seventh lens is arranged to be convex-concave, and the seventh lens is a meniscus convex toward the first side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, so that the angle of the light to the image plane meets the requirements of CRA, and improves the resolution and illumination of the optical lens.

[0165] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is concave. The seventh lens is a double concave lens, which is conducive to receiving the light emitted by the sixth lens. By controlling the focal length of the seventh lens, the aberration of the optical lens can be effectively corrected, the image quality can be improved, and the optical performance such as distortion and CRA can be optimized.

[0166] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex. The seventh lens is a meniscus convex to the second side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, increasing the image surface of the optical lens, and achieving a large edge angle resolution.

[0167] Optionally, the seventh lens has positive focal length, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The seventh lens has positive focal length, which is conducive to light convergence, and the double convex shape is more conducive to light entering the rear optical system, which is conducive to correcting the aberration of the optical lens. At the same time, the seventh lens can lower the height of the light incident on the subsequent optical system and reduce the rear port diameter of the optical lens.

[0168] In this embodiment, the seventh lens is an aspherical lens. Setting the seventh lens as an aspherical lens is beneficial to correcting the aberration of the optical lens, improving the resolution of the optical lens, and reducing the aberration of a large field of view.

[0169] In this embodiment, the optical lens further includes a stop, which is located between the fourth lens and the fifth lens. This arrangement is conducive to effectively converging the light entering the optical lens, reducing the lens aperture at the front end of the optical lens, and reducing the assembly sensitivity of the optical lens.

[0170] In this embodiment, at least one of the first side surface of the seventh lens and the second side surface of the seventh lens has an inflection point. This arrangement is conducive to balancing the aberration of the central field of view and the edge field of view, and improving the resolution.

[0171] In this embodiment, the second lens and the third lens are cemented lenses, and the fifth lens and the sixth lens are cemented lenses. The cemented lens can effectively eliminate the influence of ghost images on the optical lens, so that the optical lens has a higher resolution on the basis of eliminating ghost images. In addition, the cemented lens can fully correct various aberrations of the optical lens, improve the resolution, and optimize the optical properties such as distortion and CRA under the premise of compact structure. The negative lens in the cemented lens has a higher refractive index than the positive lens in the cemented lens, so that the light can be effectively and smoothly converged, so that the light can reach the imaging surface smoothly, reducing the overall weight and cost. The cemented lens can also reduce the light loss caused by reflection between lenses. The combination of high and low refractive indices is also conducive to the rapid transition of the light of the front system, increasing the aperture of the aperture, increasing the amount of light passing, and helping to improve the imaging quality in a weak light environment. The use of a cemented lens can also reduce the air gap between the two lenses, making the optical lens more compact as a whole, while reducing the tolerance sensitivity problems such as overall eccentricity caused by the lens during the assembly process.

[0172] In this embodiment, the distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following condition: d11 / TTL≥0.05. The distance between the sixth lens and the seventh lens is limited to a reasonable range, which increases the optical path of the reflected light between the lenses, and is conducive to moving the focus point of the ghost image away from the image plane and reducing the ghost image. Preferably, d11 / TTL≥0.08.

[0173] In this embodiment, the radius of curvature R11 of the second side surface of the sixth lens satisfies the following relationship with the focal length F of the entire optical lens set: R11 / F≤-0.001. The second side surface of the sixth lens is a convex surface, and the light formed when reflecting from the color filter and the chip protection glass is divergent light, which is beneficial to reduce ghost images. Preferably, R11 / F≤-0.01.

[0174] In this embodiment, the optical back focus BFL of the optical lens and the total optical length TTL of the optical lens satisfy: BFL / TTL≥0.02. When the total optical length of the optical lens is the same, the optical lens has a longer optical back focus to meet the special requirements of the optical lens for a long back focus, and space can also be reserved for the installation and focusing of optical elements to avoid interference with the mechanism. Preferably, BFL / TTL≥0.05.

[0175] In this embodiment, the maximum field of view FOV of the optical lens, the image height H corresponding to the maximum field of view of the optical lens, and the total optical length TTL of the optical lens satisfy: TTL / H / FOV≤0.1. When the image plane and the field of view are the same, the total optical length of the optical lens is effectively limited, which is conducive to miniaturization of the optical lens. Preferably, TTL / H / FOV≤0.08.

[0176] In this embodiment, the focal length value F of the entire optical lens group and the entrance pupil diameter ENPD of the optical lens satisfy: F / ENPD≤2.0. This setting enables the optical lens to have a small FNO, which is beneficial to increase the light throughput of the optical lens, improve the relative illumination of the optical lens, and facilitate clear imaging of the optical lens in a weak light environment. Preferably, F / ENPD≤1.8.

[0177] In this embodiment, the total optical length TTL of the optical lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: TTL / (H / 2)≥5. Under the condition that the image height remains unchanged and miniaturization is met, the total optical length of the optical lens is controlled to reduce the focal length allocated to each lens, which is beneficial to correcting the aberration of the optical lens, thereby improving the resolution. Preferably, TTL / (H / 2)≥6.5.

[0178] In this embodiment, the clear aperture D13 of the second side surface of the seventh lens and the image height H corresponding to the maximum field angle of the optical lens satisfy: D13 / H≥0.7. This arrangement makes the last lens closer to the image height under the same imaging plane and the same image height, which is conducive to achieving a small CRA. Preferably, D13 / H≥0.85.

[0179] In this embodiment, the focal length F3 of the third lens and the focal length F of the entire optical lens group satisfy: |F3 / F|≤3. The third lens has positive focal power and has a positive effect on thermal compensation. When the focal length is small, it is beneficial to reduce the image plane deviation under high temperature. Preferably, |F3 / F|≤2.

[0180] In this embodiment, the curvature radius R7 of the first side surface of the fourth lens and the curvature radius R8 of the second side surface of the fourth lens satisfy: |R7 / R8|≤2.5. Controlling the curvature radii of the first side surface and the second side surface of the fourth lens within a reasonable range is conducive to collecting more light and increasing the light transmission capacity of the optical lens. Preferably, |R7 / R8|≤1.8.

[0181] In this embodiment, the maximum opening angle of the second side surface of the first lens satisfies: arctan(1 / K(S2)≥40. The second side surface of the first lens has a larger opening angle, which is beneficial for the large-angle peripheral light entering through the first lens to enter the rear optical system, thereby improving the imaging quality of the optical lens. Preferably, arctan(1 / K(S2)≥45.

[0182] In this embodiment, the middle thickness d3 of the second lens, the middle thickness d4 of the third lens and the total optical length TTL of the optical lens satisfy: (d3+d4) / TTL≥0.05. Properly increasing the center thickness of the cemented lens is conducive to enhancing the ability to control light, and is conducive to controlling more light to enter the rear optical system and improving relative illumination. Preferably, (d3+d4) / TTL≥0.08.

[0183] In this embodiment, the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the entire focal length value F of the optical lens satisfy: (H / 2) / (F*tan(θ / 2)≥0.6. This setting makes the actual image height closer to the ideal image height, the distortion of the optical lens is small, and it is conducive to achieving a large angle resolution of the edge field of view. Preferably, (H / 2) / (F*tan(θ / 2)≥0.75.

[0184] In this embodiment, the radius of curvature R1 of the first side surface of the first lens, the radius of curvature R2 of the second side surface of the first lens, the clear aperture D1 of the first side surface of the first lens, and the clear aperture D2 of the second side surface of the first lens satisfy: (R1 / D1) / (R2 / D2)≤4. This arrangement makes the aberration of the radius of curvature of the first side surface and the second side surface of the first lens smaller, and the apertures of the two surfaces are closer, which is conducive to reducing the divergence of light and lowering the light, thereby making the front aperture of the optical lens smaller. Preferably, (R1 / D1) / (R2 / D2)≤2.

[0185] In this embodiment, the curvature radius R2 of the second side surface of the first lens and the curvature radius R3 of the first side surface of the second lens satisfy: (R2-R3) / (R2+R3)≤-2. This arrangement is conducive to correcting the aberration of the optical lens, and ensures that when the light emitted from the first lens is incident on the first side surface of the second lens, the incident light is relatively gentle, thereby reducing the tolerance sensitivity of the optical lens. Preferably, (R2-R3) / (R2+R3)≤-4.

[0186] In this embodiment, the focal length F23 of the cemented lens composed of the second lens and the third lens and the focal length F of the entire optical lens group satisfy: F23 / F≤-0.5. This arrangement is conducive to controlling the trend of light between the first lens and the fourth lens, reducing the aberration caused by the large-angle light entering through the first lens, and is conducive to compact lens structure and miniaturization of the optical lens. Preferably, F23 / F≤-1.5.

[0187] In this embodiment, the focal length value F1 of the first lens and the focal length value F of the entire optical lens group satisfy: F1 / F≥-8. Reasonable allocation of the focal length of the first lens is conducive to collecting light with a large field angle into the optical system. Preferably, F1 / F≥-4.

[0188] In this embodiment, the arc value θ of the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the focal length value F of the entire group of the optical lens satisfy: |(HF*θ) / (F*θ)|≤0.2. When the field angle of the optical lens and the size of the imaging surface remain unchanged, it is beneficial to reduce the focal length of the optical lens, so that the optical lens has small distortion, and it is beneficial to improve the imaging quality of the optical lens. Preferably, |(HF*θ) / (F*θ)|≤0.1.

[0189] In this embodiment, the second lens and the third lens are bonded to form a first bonded lens, and the radius of curvature Rj1 of the bonding surface of the first bonded lens and the aperture Φj1 of the bonding surface of the first bonded lens satisfy: |Rj1| / (Φj1 / 2)≤5. This arrangement is conducive to controlling the size of the opening angle of the bonding surface of the first lens. A smaller opening angle is not conducive to correcting aberrations, and a larger opening angle is not conducive to large field imaging. By controlling |Rj1| / (Φj1 / 2) within a reasonable range, the generation of high-order aberrations can be effectively controlled, which is conducive to improving the light transmission and resolution of the entire optical lens, and effectively reducing the requirements for the bonding process of the bonding surface. Preferably, |Rj1| / (Φj1 / 2)≤3.5.

[0190] Embodiment 3

[0191] like Figures 1 to 20 As shown, the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the first lens has a negative optical power, and the second side surface of the first lens is a concave surface; the second lens has a negative optical power, and the first side surface of the second lens is a concave surface; the third lens has a positive optical power, and the second side surface of the third lens is a convex surface; the fourth lens has a positive optical power, and the first side surface of the fourth lens is a convex surface; the fifth lens has an optical power, and the first side surface of the fifth lens is a convex surface; the sixth lens has an optical power; the seventh lens has an optical power; and the , the optical powers of the fifth lens and the sixth lens are opposite in positive and negative; the distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens satisfies the following condition, and the total optical length TTL of the optical lens satisfies the following condition: d11 / TTL≥0.03; the distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following condition, and the total optical length TTL of the optical lens satisfies the following condition: d7 / TTL≥0.09; the focal length F7 of the seventh lens and the entire group focal length value F of the optical lens satisfy the following condition: |F7 / F|≥2.5.

[0192] The first lens has a negative focal length and has a divergent effect on the light passing through the first lens. Under the same field of view, the light emitted through the second side of the first lens can enable the rear optical system to have a larger light receiving surface. The second side of the first lens is set as a concave surface, which quickly diverges the large-angle light passing through the first side of the first lens, which is beneficial to the rear optical system to correct the large-angle aberration and achieve high resolution. The first lens is preferably made of a material with a high refractive index, which is beneficial to the reduction of the front port diameter and improve the imaging quality of the optical lens.

[0193] Optionally, the first side surface of the first lens is convex, which is beneficial for the first lens to collect light with a large field of view and enter the rear optical system. At the same time, it is beneficial for water droplets to slide off when encountering rainy or snowy weather, thereby reducing the impact on imaging.

[0194] Of course, the first side surface of the first lens may also be set as a concave surface, so that the large-angle light passing through the first side surface of the first lens can be quickly diverged, which is beneficial for the rear optical system to correct the aberration of the large-angle light and achieve high resolution.

[0195] The second lens has negative optical power, and the first side surface of the second lens is a concave surface, which is conducive to diverging light and can make the light emerge smoothly, which is conducive to improving aberrations and increasing the imaging quality of the optical lens.

[0196] Optionally, the second side surface of the second lens is a concave surface, which can make the light emerge smoothly, which is beneficial to improving aberration and increasing the imaging quality of the optical lens.

[0197] Of course, the first side surface of the second lens can also be set to be concave to diverge light, which can make the light output smooth and help improve aberrations. The second side surface of the second lens is convex, which can reduce the incident height of large-angle light, thereby reducing the rear port diameter of the optical lens and reducing the overall length of the optical lens.

[0198] The third lens has positive focal length and converges light. The second side surface of the third lens is convex, which can reduce the incident height of large-angle light, thereby reducing the diameter of the lens rear port and the total length of the optical lens.

[0199] Optionally, the first side surface of the third lens is a convex surface, which has a converging effect on light.

[0200] The fourth lens has positive focal power, and the first side surface of the fourth lens is a convex surface, which has a convergence effect on light. Reasonable setting of the focal power of the fourth lens can further reduce aberrations and improve the imaging quality of the optical lens.

[0201] Optionally, the second side surface of the fourth lens is a convex surface, and the edge field light is deflected downward (toward the center) after passing through the second side surface of the fourth lens, which is beneficial to reducing the rear port diameter of the optical lens.

[0202] Of course, the second side surface of the fourth lens may also be set to be a concave surface, which is beneficial for the smooth transition of light backwards.

[0203] The fifth lens has optical power, and the first side surface of the fifth lens is a convex surface, which is conducive to collecting the light emitted by the fourth lens.

[0204] Optionally, the fifth lens has positive focal power and the sixth lens has negative focal power. The fifth lens has positive focal power and has a convergence effect on light. By controlling the focal length of the fifth lens, the aberration of the optical lens can be effectively corrected, the image quality can be improved, and the optical properties such as distortion and CRA can be optimized. The sixth lens has negative focal power and has a divergence effect on light. The trend of the light emitted by the fifth lens is adjusted so that the light can be more reasonably converged and diverged to the rear lens, reducing the field curvature between different fields of view. Reasonable setting of the focal power of the sixth lens can further reduce aberrations and improve imaging quality.

[0205] Optionally, when the fifth lens has positive focal power and the sixth lens has negative focal power, the first side of the fifth lens can be set to be convex, the second side of the fifth lens can be set to be convex, the first side of the sixth lens can be set to be concave, and the second side of the sixth lens can be set to be convex. The first side of the fifth lens is convex, which has a convergence effect on light, and the second side of the fifth lens is convex. The edge field of view light is deflected toward the center after passing through the second side of the fifth lens, which is conducive to further reducing the diameter of the back port of the optical lens. The first side of the sixth lens is concave, which can receive and diverge the front light. The light of the edge field of view will have a larger optical path than the light of the center field of view after passing through the sixth lens, which changes the light trend of the edge field of view, which is conducive to defocus correction of the edge field of view aberration and achieving high resolution. The second side of the sixth lens is convex, which can reduce the incident height of large-angle light, further reduce the diameter of the back port of the optical lens, and reduce the total length of the optical lens.

[0206] Of course, when the fifth lens has positive focal power and the sixth lens has negative focal power, the first side of the fifth lens can also be set to be convex, the second side of the fifth lens can be convex, the first side of the sixth lens can be concave, and the second side of the sixth lens can be concave. The first side of the fifth lens is convex, which has a convergence effect on the light, and the second side of the fifth lens is convex. The edge field of view light is deflected toward the center after passing through the second side of the fifth lens, which is conducive to further reducing the diameter of the rear port of the optical lens. The first side of the sixth lens is concave, which can receive and diverge the front light. The light of the edge field of view will have a larger optical path than the light of the center field of view after passing through the sixth lens, which changes the light trend of the edge field of view, which is conducive to defocus correction of the edge field of view aberration and achieving high resolution. The second side of the sixth lens is concave, which is conducive to raising the height of the emitted light, reducing the overlap of light of different fields of view on the rear aspheric lens, so that the rear lens can better correct the aberration between different fields of view.

[0207] In addition, the fifth lens can be set to have a negative focal power and the sixth lens can be set to have a positive focal power. The fifth lens has a negative focal power and has a divergent effect on the light, so that the subsequent optical system has a larger light receiving surface. Reasonable allocation of the focal power of the fifth lens is conducive to reducing aberrations and improving optical performance; the sixth lens has a positive focal power and has a converging effect on the light. Reasonable setting of the focal power of the sixth lens can further deflect the light toward the optical axis and reduce the diameter of the back port.

[0208] Optionally, when the fifth lens has negative optical power and the sixth lens has positive optical power, the first side surface of the fifth lens is convex, the second side surface of the fifth lens is concave, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is convex. The first side surface of the fifth lens is convex, which has a convergence effect on light, and the second side surface of the fifth lens is concave, which is beneficial to increase the height of the outgoing light, so that the overlap of light rays of different fields of view on the rear aspheric lens is reduced, so that the rear lens can better correct the aberrations between different fields of view. The first side surface of the sixth lens is convex, which has a convergence effect on light, and the second side surface of the sixth lens is convex. The edge field of view light rays are deflected toward the center after passing through the second side surface of the fifth lens, which is beneficial to further reduce the diameter of the rear port of the optical lens.

[0209] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave. The seventh lens is arranged to be convex-concave, and the seventh lens is a meniscus convex toward the first side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, so that the angle of the light to the image plane meets the requirements of CRA, and improves the resolution and illumination of the optical lens.

[0210] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is concave. The seventh lens is a double concave lens, which is conducive to receiving the light emitted by the sixth lens. By controlling the focal length of the seventh lens, the aberration of the optical lens can be effectively corrected, the image quality can be improved, and the optical performance such as distortion and CRA can be optimized.

[0211] Optionally, the seventh lens has negative optical power, the first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex. The seventh lens is a meniscus convex to the second side, which is conducive to receiving the light emitted by the sixth lens. The negative optical power is conducive to the divergence of light, increasing the image surface of the optical lens, and achieving a large edge angle resolution.

[0212] Optionally, the seventh lens has positive focal length, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The seventh lens has positive focal length, which is conducive to light convergence, and the double convex shape is more conducive to light entering the rear optical system, which is conducive to correcting the aberration of the optical lens. At the same time, the seventh lens can lower the height of the light incident on the subsequent optical system and reduce the rear port diameter of the optical lens.

[0213] Optionally, the seventh lens has positive focal power, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave. The seventh lens has a convex-concave shape, which is a meniscus shape convex toward the object side, which is conducive to collecting the light emitted by the sixth lens and smoothly transitioning to the imaging surface.

[0214] By limiting d11 / TTL to a reasonable range, due to the large spacing between the sixth lens and the seventh lens, the optical path of the reflected light between the lenses is increased, which is conducive to the focus of the ghost image being away from the image plane, reducing the ghost image, and at the same time, it is conducive to the smooth transition of the light converging in front, realizing light splitting, and with the seventh lens having a large focal length, the field curvature is further reduced and the resolution is improved. Preferably, d11 / TTL≥0.05 is more conducive to reducing ghost images and improving resolution. More preferably, 0.055≤d11 / TTL≤0.2, the upper limit of the control condition is controlled to avoid excessive spacing between the sixth lens and the seventh lens, which is conducive to improving resolution and taking into account miniaturization.

[0215] By limiting d7 / TTL within a reasonable range, since the third lens and the fourth lens are both positive focal lengths, they continuously converge light, and the third lens and the fourth lens have a larger distance between them, which is conducive to effective convergence of light and reduces the diameter of the back port. At the same time, the light can smoothly transition to the fifth lens, reducing the aberration caused by continuous convergence, which is conducive to improving image quality. Preferably, d7 / TTL≥0.1, which is more conducive to improving image quality. More preferably, 0.1≤d7 / TTL≤0.4, the upper limit of the control condition is controlled to avoid excessive distance between the third lens and the fourth lens, which is conducive to improving resolution and taking into account miniaturization.

[0216] By limiting |F7 / F| within a reasonable range, the seventh lens has a larger focal length, which is conducive to splitting and reducing field curvature; the light is less affected by the surface shape change, which is conducive to correcting lens aberrations, has low sensitivity, and can correct the chromatic aberration of the light lens, which is conducive to improving the imaging quality of the lens; it is conducive to a smooth transition of light, and the light convergence or divergence deflection angle is small, and the exit angle of the image side light will be controlled within a certain range, which is conducive to achieving a small CRA. The seventh lens, the fifth lens and the sixth lens have a positive focal length, which converges light and is conducive to better imaging of the optical lens. The seventh lens has a larger focal length, which disperses the converged light, which is more conducive to reducing field curvature and improving resolution. Preferably, |F7 / F|≥3.5, which is more conducive to reducing field curvature and improving resolution.

[0217] Optionally, when the first side surface of the first lens is convex and the second side surface of the second lens is concave, the focal length value F1 of the first lens satisfies the following relationship with the focal length value F of the entire group of optical lenses: -3.6≤F1 / F≤-1.7. The focal length value F2 of the second lens satisfies the following relationship with the focal length value F of the entire group of optical lenses: -3≤F2 / F≤-0.3. The curvature radius R1 of the first side surface of the first lens and the curvature radius R2 of the second side surface of the first lens satisfy the following relationship: 0.5≤R1 / R2≤4. The curvature radius R3 of the first side surface of the second lens and the curvature radius R4 of the second side surface of the second lens satisfy the following relationship: -2≤R3 / R4<0. By reasonably allocating the focal length of the first lens, it is beneficial to collect light with a large field of view angle to enter the optical system. The difference between the curvature radii of the two sides of the first lens is small, which reduces the divergence of light, helps to suppress the light, and makes the front port diameter of the lens smaller. By allocating a smaller focal length of the second lens, the light can be quickly diverged, the distance between the second and third lenses can be reduced, and the total length of the lens can be reduced. By reasonably setting the curvature radius of the two side surfaces of the second lens, the light emitted by the first lens can be received, so that the light can be emitted smoothly, which is beneficial to improve the aberration. Preferably, F1 / F≥-4, -2≤F2 / F≤-0.4, 1≤R1 / R2≤3, -1.5≤R3 / R4<0.

[0218] Optionally, when the first side surface of the first lens is concave and the second side surface of the second lens is convex, the focal length value F1 of the first lens satisfies the following relationship with the focal length value F of the entire optical lens group: -2≤F1 / F≤-0.4; the focal length value F2 of the second lens satisfies the following relationship with the focal length value F of the entire optical lens group: -6.5≤F2 / F≤-4.5; the curvature radius R1 of the first side surface of the first lens and the curvature radius R2 of the second side surface of the first lens satisfy the following relationship: -8≤R1 / R2≤-4; the curvature radius R3 of the first side surface of the second lens and the curvature radius R4 of the second side surface of the second lens satisfy the following relationship: 0<R3 / R4≤2. By reasonably allocating the focal length of the first lens, it is beneficial to collect light with a large field of view angle to enter the optical system. By reasonably setting the curvature radius of the two sides of the first lens, the light can be quickly diverged, the incident height of the angle light can be increased, which is beneficial to reduce distortion and improve resolution. By reasonably allocating the focal length of the second lens, it is beneficial to diverge the edge field of view light, reduce distortion and improve resolution. By reasonably setting the curvature radius of the two side surfaces of the second lens, the light emitted by the first lens can be quickly diverged, which can increase the incident height of the angle light, which is beneficial to reduce distortion and improve resolution. Preferably, -1.7≤F1 / F≤-1.0, -6.0≤F2 / F≤-5.0, -7≤R1 / R2≤-5, 0<R3 / R4≤1.5.

[0219] In this embodiment, the focal length value F1 of the first lens, the focal length value F2 of the second lens, and the focal length value F of the entire optical lens group satisfy: -3≤MAX[F1, F2] / F. Since the focal lengths of the first lens and the second lens are both negative, they play an important role in divergence in the optical lens. By controlling MAX[F1, F2] / F within a reasonable range, the one with a larger focal length of the first and second lenses is selected for control, and its light processing ability is stronger, which is conducive to rapid divergence of light, light collection, increase of relative illumination of the optical lens, reduction of the distance with the rear lens, miniaturization, reduction of distortion and improvement of resolution. Preferably, -2.1≤MAX[F1, F2] / F≤-0.1.

[0220] In this embodiment, the focal length value F3 of the third lens and the focal length value F of the entire optical lens group satisfy: F3 / F≤3.5. The third lens has positive focal power, which has a positive effect on thermal compensation. When the focal length is small, it is beneficial to reduce the image plane offset under high temperature, and it is also beneficial to reduce the distance between the third lens and the fourth lens, which is beneficial to miniaturization. The positive focal length of the third lens is matched with the positive focal length of the second lens, which is beneficial to correct aberrations and improve resolution. The third lens and the fourth lens are matched with positive focal lengths, and the light rays are continuously converged, which is beneficial to miniaturization and reducing the diameter of the rear port. Preferably, F3 / F≤3.

[0221] In this embodiment, the maximum opening angle of the second side surface of the first lens satisfies: arctan(1 / K(S2)≥30°. The second side surface of the first lens has a larger opening angle, which is beneficial for large-angle peripheral light entering through the first lens to enter the rear optical system, thereby improving the imaging quality of the optical lens. Preferably, arctan(1 / K(S2)≥35°.

[0222] In this embodiment, the curvature radius R2 of the second side surface of the first lens and the curvature radius R3 of the first side surface of the second lens satisfy: (R2-R3) / (R2+R3)≤-2. This arrangement is conducive to correcting the aberration of the optical lens, and ensures that when the light emitted from the first lens is incident on the first side surface of the second lens, the incident light is relatively gentle, thereby reducing the tolerance sensitivity of the optical lens. Preferably, (R2-R3) / (R2+R3)≤-3.

[0223] In this embodiment, the focal length value F2 of the second lens and the focal length value F3 of the third lens satisfy: -3≤F2 / F3≤-0.1. The focal lengths of the second and third lenses are one negative and one positive. By controlling F2 / F3 within a reasonable range, the light quickly diverges through the second lens, reducing the divergence pressure of the rear lens, and can also reduce the distance between the second and third lenses. The third lens receives and quickly converges the light emitted by the second lens, which is conducive to balancing the aberrations of the second and third lenses, and can effectively reduce the sensitivity of the optical lens, further improving the imaging quality. Preferably, -2≤F2 / F3≤-0.2, which is more conducive to reducing the sensitivity of the optical lens, further improving the imaging quality, and reducing the aberrations of the optical system.

[0224] In this embodiment, the focal length value F4 of the fourth lens satisfies the focal length value F of the entire group of optical lenses: 0.5≤F4 / F≤4. By setting F4 / F within a reasonable range, the focal length of the fourth lens is positive and the value is small, which is conducive to the rapid convergence of the light emitted by the third lens and the reduction of the total length of the lens. The third and fourth lenses are matched with positive focal lengths, and the fourth lens receives the light of the third lens for further convergence, shortening the distance between the third and fourth lenses, so that the light emitted through the third lens can smoothly transition to the fourth lens, improve the resolution quality of the optical lens, and can also reduce the loss of light energy, which is conducive to the fourth lens receiving more light from the third lens. At the same time, the third and fourth lenses of L3L4 are matched with two positive focal lengths, which can share the convergence pressure of the rear lens, reduce the sensitivity of the rear lens, and help improve the imaging quality. Preferably, 1.2≤F4 / F≤3 is more conducive to reducing the total length of the lens, reducing the sensitivity of the rear lens, and improving the resolution quality of the optical lens.

[0225] In this embodiment, the focal length value F5 of the fifth lens and the focal length value F6 of the sixth lens satisfy: -8≤F5 / F6≤-0.1. The fifth and sixth lenses are matched with one negative and one positive, and controlling F5 / F6 within a reasonable range is conducive to balancing the aberrations of the fifth and sixth lenses, which can effectively reduce the sensitivity of the optical lens and further improve the imaging quality. The incident light of the fifth lens and the light emitted by the sixth lens are close to the angle, which reduces the sensitivity of the rear lens. Preferably, -4≤F5 / F6≤-0.2, which is more conducive to improving the imaging quality and reducing the sensitivity of the rear lens.

[0226] In this embodiment, the distance d23 on the optical axis from the second side surface of the second lens to the first side surface of the third lens and the on-axis distance TL from the first side surface of the first lens to the second side surface of the seventh lens satisfy: d23 / TL≤0.1. By limiting d23 / TL within a reasonable range, the distance between the second and third lenses is small, which is conducive to miniaturization. The focal lengths of the second and third lenses are one positive and one negative, which is conducive to correcting aberrations and improving resolution.

[0227] In this embodiment, the second lens and the third lens are glued or spaced. The second and third lenses are glued together, which is conducive to shortening the total length of the lens, correcting various aberrations of the optical lens, and improving the resolution under the premise of compact structure, optimizing optical performance such as distortion and CRA. Preferably, 0≤d23 / TL≤0.08. Of course, the second and third lenses can be spaced apart, and there is an air gap between the second lens and the third lens, which is conducive to achieving thermal compensation of the optical lens, reducing the sensitivity of the second lens and the third lens, and the optical lens has a large adjustment space. Preferably, 0.01≤d23 / TL≤0.07.

[0228] In this embodiment, the focal length value F2 of the second lens and the focal length value F of the entire optical lens group satisfy: -8≤F2 / F, the focal length of the second lens is small, it can quickly diverge the light, reduce the distance between the second lens and the third lens, reduce the total optical length, and is conducive to diverging the edge field light, reducing distortion, and improving resolution. Preferably, -7≤F2 / F≤-0.2, which is more conducive to reducing the total optical length and achieving high resolution.

[0229] In this embodiment, the radius of curvature R6 of the second side surface of the third lens and the radius of curvature R7 of the first side surface of the fourth lens satisfy: -2.5≤R6 / R7≤-0.1. The second side surface of the third lens and the first side surface of the fourth lens are both convex surfaces. By limiting R6 / R7 within a reasonable range, the light rays are continuously converged, the light refracting ability is relatively large, and the axial space required for the same optical path of the light rays emitted through the second side surface of the third lens is small, which is conducive to miniaturization; the light rays on the first side surface of the fourth lens are deflected toward the optical axis, which is conducive to reducing the diameter of the rear port. Preferably, -2≤R6 / R7≤-0.2, which is more conducive to miniaturization.

[0230] In this embodiment, the distance d12 on the optical axis from the second side of the first lens to the first side of the second lens and the on-axis distance TL from the first side of the first lens to the second side of the seventh lens satisfy: d12 / TL≤0.17. By limiting d12 / TL within a reasonable range, the spacing between the first lens and the second lens is small, which is conducive to reducing TTL, achieving miniaturization, and controlling the distance between the first lens and the second lens. With the first lens and the second lens both having negative optical focal length, the second lens receives further divergence of the light from the first lens, shortening the distance between the two lenses, so that the light emitted through the first lens can smoothly transition, and the light smoothly enters the rear optical system, improving the resolution quality of the optical system, and reducing the loss of light energy, which is conducive to the second lens receiving more light from the first lens. Preferably, d12 / TL≤0.16, which is more conducive to reducing the spacing between the first lens and the second lens, achieving miniaturization, and improving the resolution quality of the optical lens.

[0231] In this embodiment, the combined focal length value F56 of the fifth lens and the sixth lens and the focal length value F of the entire group of optical lenses satisfy: 0<F56 / F≤7. By limiting F56 / F within a reasonable range, it is beneficial to control the light trend entering the fifth lens and the sixth lens, reduce the aberration caused by the large-angle light, and reduce the aberration caused by the large-angle light entering; the light exit angle of the second side of the sixth lens is controlled within a certain range, which is beneficial to correct the lens aberration, reduce the lens sensitivity, and can correct the chromatic aberration of the light lens, which is beneficial to improve the imaging quality of the lens; at the same time, the lens structure is compact, which is beneficial to miniaturization. It is also beneficial to converge light, reduce the aperture of the rear lens, and match the larger distance between the sixth and seventh lenses, which is beneficial to the light splitting of the light emitted by the sixth lens, which is beneficial to reduce the field curvature and improve the resolution. Preferably, 0.5≤F56 / F≤6.2, which is more beneficial to reduce the field curvature and improve the resolution.

[0232] In this embodiment, the axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens and the middle thickness d3 of the second lens satisfy: TL / d3≥10. By limiting TL / d3 within a reasonable range, the thickness of the second lens is small, which is conducive to reducing the total length of the lens and achieving short TTL. In addition, when the TTL of the optical lens is limited, by reducing the middle thickness of the second lens, space is provided for the subsequent optical system, which is conducive to reducing the field curvature due to the back-end system splitting. Preferably, TL / d3≥13, which is more conducive to reducing the field curvature and improving the resolution.

[0233] In this embodiment, the on-axis distance TL from the first side surface of the first lens to the second side surface of the seventh lens and the distance d34 on the optical axis from the second side surface of the third lens to the first side surface of the fourth lens satisfy: 25≤TL / d34. By limiting TL / d34 to a reasonable range, the spacing between the third and fourth lenses is small, which is conducive to reducing the total length of the lens and achieving short TTL. Preferably, 28≤TL / d34≤400, which is more conducive to reducing the total length of the lens, controlling the upper limit of the conditional formula, avoiding too small spacing between the third lens and the fourth lens, and improving the resolution on the basis of miniaturization.

[0234] In this embodiment, the curvature radius R11 of the second side surface of the sixth lens satisfies the entire focal length value F of the optical lens set: R11 / F≤-0.01, which is conducive to reducing ghost images and improving resolution. Preferably, -15≤R11 / F≤-2.5. By limiting R11 / F to a reasonable range, the surface shape of the second side surface of the sixth lens, and the light formed by the reflection of the color filter and the chip protection glass is divergent light, which is conducive to reducing ghost images.

[0235] In this embodiment, other conditional expressions in Embodiment 1 and Embodiment 2 may also be included, which will not be described one by one here.

[0236] Optionally, the optical lens may further include a filter for correcting color deviation and a protective glass for protecting a photosensitive element located on the imaging surface.

[0237] In the above optical lens, the maximum field of view FOV of the optical lens is associated with H, and the field of view corresponding to the image height is used. The total optical length TTL of the optical lens refers to the distance from the first side of the first lens to the imaging surface of the optical lens on the optical axis. The optical back focus BFL of the optical lens refers to the distance from the center of the second side of the last lens of the optical lens to the center of the imaging surface.

[0238] The optical lens in the present application may use multiple lenses, such as the seven lenses mentioned above. In the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Specifically, when focusing on the imaging quality of the optical lens, the first lens to the seventh lens can all use aspherical lenses.

[0239] In an exemplary embodiment, the first lens to the seventh lens may all be glass lenses. An optical lens made of glass can suppress the deviation of the back focus of the optical lens with temperature changes to improve system stability. At the same time, the use of glass material can avoid lens imaging blur caused by high and low temperature changes in the use environment, which affects the normal use of the lens. For example, an optical lens with an all-glass design has a wide temperature range and can maintain stable optical performance in the range of -40°C to 105°C.

[0240] Specifically, when focusing on resolution quality and reliability, the first to seventh lenses can all be glass aspheric lenses. Of course, in applications where temperature stability requirements are low, the first to seventh lenses in the optical lens can also be made of plastic. Using plastic to make optical lenses can effectively reduce production costs. Of course, the first to seventh lenses in the optical lens can also be made of a combination of plastic and glass.

[0241] The present application also provides an electronic device, comprising the above-mentioned optical lens and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The imaging element may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The electronic device may be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The electronic device is equipped with the above-described optical lens.

[0242] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.

[0243] The following further describes examples of specific surface shapes and parameters of the optical lens applicable to the above-mentioned embodiment with reference to the accompanying drawings. It should be noted that, in order to ensure the uniformity of the meaning of the accompanying drawings, regardless of whether the second and third lenses are glued together, the second side surface of the second lens is S4 and the first side surface of the third lens is S5.

[0244] Example 1

[0245] like Figure 1 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0246] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0247] In this example, the focal length F of the optical lens is 7.8855 mm, the total length TTL of the optical lens is 37.0026 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0248] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4; the fifth lens and the sixth lens are cemented lenses, and the second side surface of the fifth lens and the first side surface of the sixth lens are both S10; but for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0249] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0250] Table 1 shows the basic structural parameters of the optical lens of Example 1, wherein the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0251] Surf Radius Thickness Nd Vd 1 12.2545 1.5000 1.77 49.60 2 6.3074 4.3126 3 -8.5950 1.6030 1.70 41.15 4 11.5332 5.7674 1.59 68.34 5 -11.5332 0.1000 6 13.0929 2.0887 1.88 39.22 7 105.8628 8.3274 STO Infinity -0.6513 8 10.5208 3.1031 1.69 54.54 10 -8.8170 0.6999 1.92 20.88 11 -75.3583 4.2459 12 27.9998 2.8086 1.59 61.31 13 14.7774 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 1.3571 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0252] Table 1

[0253] In this example, the seventh lens is an aspheric lens. The surface shape of each aspheric lens can be defined by but not limited to the following aspheric formula:

[0254]

[0255] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; and A is the high-order coefficient. Table 2 below shows the cone coefficient k and the high-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), D (10th-order coefficient), E (12th-order coefficient), F (14th-order coefficient), and G (16th-order coefficient) that can be used for the surface of the aspheric lens in this example.

[0256] Surf K A B C D E F G 12 -65.6310 -1.3090E-03 -7.8039E-06 2.0228E-06 -2.2382E-07 1.3908E-08 -4.0891E-10 3.5926E-13 13 5.8161 -2.2213E-03 2.0548E-05 -2.3601E-06 4.2812E-07 -3.9264E-08 1.6709E-09 -2.7954E-11

[0257] Table 2

[0258] Example 2

[0259] like Figure 2 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0260] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0261] In this example, the focal length F of the optical lens is 7.9518 mm, the total length TTL of the optical lens is 37 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0262] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0263] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0264] Table 3 shows the basic structural parameters of the optical lens of Example 2, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0265]

[0266]

[0267] Table 3

[0268] In this example, the seventh lens is an aspherical lens. Table 4 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0269] Surf K A B C D E F G 12 -185.1700 -1.4665E-03 -1.2945E-05 1.5383E-06 -2.2611E-07 1.5559E-08 -2.8846E-10 -3.9059E-12 13 4.4779 -2.7505E-03 1.8741E-05 -2.2131E-06 4.3757E-07 -3.8919E-08 1.6780E-09 -2.7997E-11

[0270] Table 4

[0271] Example 3

[0272] like Figure 3 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0273] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0274] In this example, the focal length F of the optical lens is 7.8899 mm, the total length TTL of the optical lens is 37.2003 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0275] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0276] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0277] Table 5 shows the basic structural parameters of the optical lens of Example 3, where the units of the radius of curvature and the thickness / distance are all in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0278] Surf Radius Thickness Nd Vd 1 12.4617 1.5000 1.77 49.60 2 5.9495 4.4000 3 -8.2809 0.6827 1.70 41.15 4 12.1843 4.8420 1.59 68.34 5 -12.1843 0.1000 6 15.8983 3.7662 1.88 39.22 7 -51.0002 7.4762 STO Infinity -0.5264 8 12.7973 2.7600 1.69 54.54 10 -8.6310 0.7013 1.92 20.88 11 -42.0568 4.5663 12 16.2937 3.5291 1.59 61.31 13 13.0980 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 1.6627 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0279] Table 5

[0280] In this example, the seventh lens is an aspherical lens. Table 6 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0281] Surf K A B C D E F G 12 1.8730 -1.2824E-03 -4.3407E-06 1.2528E-06 -2.0223E-07 1.5727E-08 -5.0031E-10 4.7915E-12 13 0.4895 -1.2803E-03 -2.6268E-05 -1.1100E-06 4.3384E-07 -3.9541E-08 1.7128E-09 -2.8854E-11

[0282] Table 6

[0283] Example 4

[0284] like Figure 4 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0285] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0286] In this example, the focal length F of the optical lens is 7.9242 mm, the total length TTL of the optical lens is 37.2 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0287] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0288] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0289] Table 7 shows the basic structural parameters of the optical lens of Example 4, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0290] Surf Radius Thickness Nd Vd 1 12.4492 1.5000 1.77 49.60 2 5.8335 4.4000 3 -7.9294 0.9814 1.70 41.15 4 11.4164 4.9302 1.59 68.34 5 -11.4164 0.1000 6 15.4827 3.7662 1.88 39.22 7 -50.7589 7.4792 STO Infinity -0.5292 8 13.5862 2.6794 1.69 54.54 10 -8.0609 0.8281 1.92 20.88 11 -37.4963 4.7686 12 24.1749 2.8962 1.59 61.31 13 16.6005 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 1.6597 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0291] Table 7

[0292] In this example, the seventh lens is an aspherical lens. Table 8 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0293]

[0294]

[0295] Table 8

[0296] Example 5

[0297] like Figure 5 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0298] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is concave, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0299] In this example, the focal length F of the optical lens is 7.9386 mm, the total length TTL of the optical lens is 36.9994 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0300] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0301] In this example, the second side surface of the seventh lens has an inflection point.

[0302] Table 9 shows the basic structural parameters of the optical lens of Example 5, where the units of the radius of curvature and the thickness / distance are all in millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0303]

[0304]

[0305] Table 9

[0306] In this example, the seventh lens is an aspherical lens. Table 10 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0307] Surf K A B C D E F G 12 195.1200 -1.2679E-03 3.2731E-06 1.8186E-06 3.2731E-06 1.8186E-06 -2.2550E-07 1.3012E-08 13 -78.1140 -1.5899E-03 1.9326E-05 -2.2408E-06 1.9326E-05 -2.2408E-06 4.3915E-07 -3.9827E-08

[0308] Table 10

[0309] Example 6

[0310] like Figure 6 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0311] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is concave, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0312] In this example, the focal length F of the optical lens is 7.9582 mm, the total length TTL of the optical lens is 36.9993 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0313] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0314] In this example, the second side surface of the seventh lens has an inflection point.

[0315] Table 11 shows the basic structural parameters of the optical lens of Example 6, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0316] Surf Radius Thickness Nd Vd 1 11.7791 1.5000 1.77 49.60 2 5.8398 3.8853 3 -7.3829 1.0857 1.70 41.15 4 10.4377 5.2798 1.59 68.34 5 -10.4377 0.9922 6 13.6570 3.0759 1.88 39.22 7 -176.6936 7.4654 STO Infinity -0.5649 8 12.6877 2.4837 1.69 54.54 10 -7.8141 0.7099 1.92 20.88 11 -39.4344 4.3004 12 -100.6324 3.2843 1.59 61.31 13 94.2135 0.8276 14 Infinity 0.5000 1.52 64.20 15 Infinity 1.5543 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0317] Table 11

[0318] In this example, the seventh lens is an aspherical lens. Table 12 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0319] Surf K A B C D E F G 12 180.6600 -1.4408E-03 2.1490E-05 -1.5710E-06 2.1490E-05 -1.5710E-06 1.6094E-08 1.0464E-08 13 -196.5600 -1.4635E-03 2.6572E-05 -3.1151E-06 2.6572E-05 -3.1151E-06 4.6535E-07 -3.5968E-08

[0320] Table 12

[0321] Example 7

[0322] like Figure 7 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0323] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is concave, and the second side surface S13 of the seventh lens is convex. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0324] In this example, the focal length F of the optical lens is 7.8387 mm, the total length TTL of the optical lens is 37.0193 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0325] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0326] Table 13 shows the basic structural parameters of the optical lens of Example 7, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0327] Surf Radius Thickness Nd Vd 1 12.7156 1.5000 1.77 49.60 2 5.7416 4.3126 3 -7.2935 0.8770 1.70 41.15 4 10.3337 5.4074 1.59 68.34 5 -10.3337 0.1000 6 13.4784 3.7662 1.88 39.22 7 -154.1316 7.6119 STO Infinity -0.6129 8 13.1815 2.0876 1.69 54.54 10 -7.8428 0.6484 1.92 20.88 11 -35.5999 4.2513 12 -19.3752 1.9335 1.59 61.31 13 -20.6419 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 3.3959 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0328] Table 13

[0329] In this example, the seventh lens is an aspherical lens. Table 14 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0330] Surf K A B C D E F G 12 15.4520 -1.6538E-03 3.1549E-05 6.6311E-07 3.1549E-05 6.6311E-07 2.4399E-08 3.2182E-09 13 15.5560 -1.4478E-03 1.0983E-05 2.6293E-06 1.0983E-05 2.6293E-06 -8.7268E-08 -2.3102E-09

[0331] Table 14

[0332] Example 8

[0333] like Figure 8 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0334] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is concave, and the second side surface S13 of the seventh lens is convex. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0335] In this example, the focal length F of the optical lens is 7.8149 mm, the total length TTL of the optical lens is 36.9977 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0336] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0337] Table 15 shows the basic structural parameters of the optical lens of Example 8, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0338]

[0339]

[0340] Table 15

[0341] In this example, the seventh lens is an aspherical lens. Table 16 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0342] Surf K A B C D E F G 12 19.6130 -1.3511E-03 4.1036E-05 -2.1920E-06 4.1036E-05 -2.1920E-06 2.3637E-07 9.2810E-09 13 17.9950 -1.2458E-03 7.7485E-06 2.4854E-06 7.7485E-06 2.4854E-06 -6.6700E-08 -6.1956E-10

[0343] Table 16

[0344] Example 9

[0345] like Fig. 9 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0346] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has positive power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is convex. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0347] In this example, the focal length F of the optical lens is 7.6904 mm, the total length TTL of the optical lens is 36.9938 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0348] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0349] In this example, the first side surface of the seventh lens has an inflection point.

[0350] Table 17 shows the basic structural parameters of the optical lens of Example 9, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0351] Surf Radius Thickness Nd Vd 1 11.3401 1.5000 1.77 49.60 2 5.8615 4.3126 3 -6.2103 0.5378 1.70 41.15 4 10.1825 6.0067 1.59 68.34 5 -10.1825 0.1000 6 19.2136 2.1848 1.88 39.22 7 -28.9900 7.2478 STO Infinity -0.3901 8 18.3588 2.4332 1.69 54.54 10 -8.6076 0.7487 1.92 20.88 11 -81.4838 4.3187 12 55.3159 1.9760 1.59 61.31 13 -26.9101 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 4.2773 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0352] Table 17

[0353] In this example, the seventh lens is an aspherical lens. Table 18 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0354] Surf K A B C D E F G 12 -200.0000 -3.1596E-04 6.0042E-05 -7.3758E-06 6.0042E-05 -7.3758E-06 2.0106E-07 1.2962E-08 13 -9.8638 1.8390E-04 -2.7008E-05 1.3012E-06 -2.7008E-05 1.3012E-06 -8.8484E-08 2.9036E-09

[0355] Table 18

[0356] Example 10

[0357] like Fig.10 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0358] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has positive power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is convex. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0359] In this example, the focal length F of the optical lens is 7.6084 mm, the total length TTL of the optical lens is 37.0058 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0360] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0361] In this example, the first side surface of the seventh lens has an inflection point.

[0362] Table 19 shows the basic structural parameters of the optical lens of Example 10, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0363]

[0364]

[0365] Table 19

[0366] In this example, the seventh lens is an aspherical lens. Table 20 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0367] Surf K A B C D E F G 12 184.7800 -1.1334E-03 2.9989E-05 -3.2023E-06 2.9989E-05 -3.2023E-06 1.6259E-08 9.6252E-09 13 -200.0000 -3.0916E-04 -5.6871E-05 1.6335E-06 -5.6871E-05 1.6335E-06 8.1414E-10 -5.6817E-11

[0368] Table 20

[0369] Example 11

[0370] like Fig.11 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0371] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S10 of the sixth lens is convex, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0372] In this example, the focal length F of the optical lens is 7.7257 mm, the total length TTL of the optical lens is 37.001 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0373] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is concave, and the first side surface S10 of the sixth lens is convex.

[0374] Table 21 shows the basic structural parameters of the optical lens of Example 11, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0375] Surf Radius Thickness Nd Vd 1 10.9839 1.5000 1.77 49.60 2 5.7626 4.3126 3 -7.4912 0.6706 1.70 41.15 4 11.0961 4.8626 1.59 68.34 5 -11.0961 0.1000 6 23.4756 3.7662 1.88 39.22 7 -29.5653 8.5263 STO Infinity -0.7314 8 10.7706 1.5006 1.69 54.54 10 5.4050 1.9994 1.92 20.88 11 -38.7829 4.5538 12 25.2333 1.9999 1.59 61.31 13 14.4210 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 2.2000 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0376] Table 21

[0377] In this example, the seventh lens is an aspherical lens. Table 22 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0378] Surf K A B C D E F G 12 31.1930 -1.4270E-03 5.7734E-05 2.1256E-07 5.7734E-05 2.1256E-07 -2.1200E-07 1.6632E-08 13 -21.8950 -5.8564E-04 2.6829E-05 -3.9592E-07 2.6829E-05 -3.9592E-07 3.9420E-07 -4.4822E-08

[0379] Table 22

[0380] Example 12

[0381] like Fig.12 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0382] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S10 of the sixth lens is convex, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0383] In this example, the focal length F of the optical lens is 7.7294 mm, the total length TTL of the optical lens is 37.0537 mm, and the maximum field of view FOV of the optical lens is 70.26°.

[0384] In this example, the second lens and the third lens are cemented lenses, and the second side surface of the second lens and the first side surface of the third lens are both S4. The fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10. However, for the first side surface and the second side surface, when the radius of curvature is the same, the surface shapes of the two are different, so the second side surface S4 of the second lens is concave, and the first side surface S4 of the third lens is convex; the second side surface S10 of the fifth lens is concave, and the first side surface S10 of the sixth lens is convex.

[0385] Table 23 shows the basic structural parameters of the optical lens of Example 12, wherein the units of the radius of curvature Radius and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0386] Surf Radius Thickness Nd Vd 1 10.9675 1.5000 1.77 49.60 2 5.8143 3.8953 3 -7.5217 1.6739 1.70 41.15 4 11.2930 4.7002 1.59 68.34 5 -11.2930 0.1000 6 20.8992 2.9251 1.88 39.22 7 -34.8837 8.7810 STO Infinity -0.6310 8 11.0145 1.0345 1.69 54.54 10 5.6054 2.5554 1.92 20.88 11 -52.9233 4.3757 12 19.4345 2.7005 1.59 61.31 13 13.2016 0.6206 14 Infinity 0.5000 1.52 64.20 15 Infinity 1.7027 16 Infinity 0.5000 1.52 64.20 17 Infinity 0.1196 IMA / /

[0387] Table 23

[0388] In this example, the seventh lens is an aspherical lens. Table 24 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0389]

[0390]

[0391] Table 24

[0392] Example 13

[0393] like Fig.13 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0394] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is concave, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0395] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0396] In this example, the focal length F of the optical lens is 7.9105 mm, the total length TTL of the optical lens is 36.8882 mm, and the maximum field of view FOV of the optical lens is 70.00°.

[0397] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0398] In this example, the second side surface of the seventh lens has an inflection point.

[0399] Table 25 shows the basic structural parameters of the optical lens of Example 13, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0400]

[0401]

[0402] Table 25

[0403] In this example, the seventh lens is an aspherical lens. Table 26 shows the cone coefficient k and the high-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), D (10th-order coefficient), E (12th-order coefficient), F (14th-order coefficient), G (16th-order coefficient), H (18th-order coefficient), and I (20th-order coefficient) that can be used for the surface of the aspherical lens in this example.

[0404] Surf K A B C D E F G H I 13 -8.7252 -1.8935E-03 -1.9626E-05 5.4440E-06 -7.5571E-07 5.8110E-08 -2.5882E-09 5.0043E-11 7.58039E-13 -3.60154E-14 14 -868.5994 -1.7587E-03 -4.4134E-06 2.0182E-06 -1.0904E-07 -1.2331E-09 4.4703E-10 -1.8444E-11 1.48229E-13 3.73242E-15

[0405] Table 26

[0406] Example 14

[0407] like Fig.14 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0408] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is concave, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0409] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0410] In this example, the focal length F of the optical lens is 8.0316 mm, the total length TTL of the optical lens is 36.9575 mm, and the maximum field of view FOV of the optical lens is 70.00°.

[0411] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0412] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0413] Table 27 shows the basic structural parameters of the optical lens of Example 14, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0414] Surf Radius Thickness Nd Vd 1 12.0000 1.5000 1.57 56.13 2 6.1964 4.9517 3 -8.7282 1.0000 1.66 35.48 4 16.7624 1.1056 5 24.5622 5.1500 1.57 71.30 6 -11.3311 0.0999 7 12.9595 3.5237 1.91 35.25 8 63.2625 5.1646 STO Infinity 0.0843 10 11.0659 3.3842 1.70 51.12 11 -8.6106 1.3359 1.95 17.94 12 -70.6982 3.3714 13 -72.3499 3.0623 1.59 61.31 14 73.2319 0.4247 15 Infinity 0.5000 1.52 64.20 16 Infinity 1.6000 17 Infinity 0.5000 1.52 64.20 18 Infinity 0.1992 IMA / /

[0415] Table 27

[0416] In this example, the seventh lens is an aspherical lens. Table 28 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0417] Surf K A B C D E F G H I 13 -8.7252 -1.8935E-03 -1.9626E-05 5.4440E-06 -7.5571E-07 5.8110E-08 -2.5882E-09 5.0043E-11 7.58039E-13 -3.60154E-14 14 -868.5994 -1.7587E-03 -4.4134E-06 2.0182E-06 -1.0904E-07 -1.2331E-09 4.4703E-10 -1.8444E-11 1.48229E-13 3.73242E-15

[0418] Table 28

[0419] Example 15

[0420] like Fig.15 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0421] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S10 of the sixth lens is convex, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0422] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0423] In this example, the focal length F of the optical lens is 7.9616 mm, the total length TTL of the optical lens is 36.9845 mm, and the maximum field of view FOV of the optical lens is 70.00°.

[0424] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is concave, and the first side surface S10 of the sixth lens is convex.

[0425] In this example, the second side surface of the seventh lens has an inflection point.

[0426] Table 29 shows the basic structural parameters of the optical lens of Example 15, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0427]

[0428]

[0429] Table 29

[0430] In this example, the seventh lens is an aspherical lens. Table 30 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0431] Surf K A B C D E F G H I 13 12.7937 -1.3754E-03 -2.0363E-05 6.9953E-06 -9.1071E-07 5.9951E-08 -2.1341E-09 4.7852E-11 -1.23294E-12 2.39836E-14 14 -9.5517 -1.4524E-03 -9.0469E-06 2.2139E-06 -1.6022E-07 -6.4973E-10 5.1006E-10 -1.8092E-11 6.49965E-14 3.79325E-15

[0432] Table 30

[0433] Example 16

[0434] like Fig.16 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0435] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is convex. The fifth lens L5 has negative power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is concave. The sixth lens L6 has positive power, the first side surface S10 of the sixth lens is convex, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has negative power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0436] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0437] In this example, the focal length F of the optical lens is 7.9563 mm, the total length TTL of the optical lens is 37.0005 mm, and the maximum field of view FOV of the optical lens is 70.00°.

[0438] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is concave, and the first side surface S10 of the sixth lens is convex.

[0439] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0440] Table 31 shows the basic structural parameters of the optical lens of Example 16, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0441] Surf Radius Thickness Nd Vd 1 11.8156 1.5000 1.57 56.13 2 6.2517 3.9560 3 -10.4538 1.0000 1.66 35.48 4 16.1095 1.4282 5 48.1804 4.5740 1.57 71.30 6 -12.6206 0.0999 7 16.0907 2.9736 1.91 35.25 8 -218.8028 5.1905 STO Infinity 0.6543 10 12.0942 2.0197 1.95 17.94 11 5.4820 4.3550 1.70 51.12 12 -31.7917 2.4689 13 42.1062 3.0003 1.59 61.31 14 19.8152 1.0347 15 Infinity 0.5000 1.52 64.20 16 Infinity 1.6000 17 Infinity 0.5000 1.52 64.20 18 Infinity 0.1294 IMA / /

[0442] Table 31

[0443] In this example, the seventh lens is an aspherical lens. Table 32 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0444] Surf K A B C D E F G H I 13 12.9006 -1.3751E-03 -2.0354E-05 6.9957E-06 -9.1070E-07 5.9951E-08 -2.1341E-09 4.7851E-11 -1.23296E-12 2.39875E-14 14 -9.5351 -1.4522E-03 -9.0379E-06 2.2142E-06 -1.6021E-07 -6.4998E-10 5.1006E-10 -1.8092E-11 6.4997E-14 3.79323E-15

[0445] Table 32

[0446] Example 17

[0447] like Fig.17 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0448] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has positive power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0449] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0450] In this example, the focal length F of the optical lens is 7.9832 mm, the total length TTL of the optical lens is 37.0015 mm, and the maximum field of view FOV of the optical lens is 70.10°.

[0451] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0452] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0453] Table 33 shows the basic structural parameters of the optical lens of Example 17, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0454] Surf Radius Thickness Nd Vd 1 11.7827 1.5000 1.57 56.13 2 6.1348 3.8709 3 -8.2394 1.0000 1.66 35.48 4 15.4081 1.7962 5 29.3615 4.4049 1.57 71.30 6 -10.1707 0.0999 7 12.8038 3.6378 1.91 35.25 8 38.0283 5.1905 STO Infinity -0.4633 10 11.6272 5.0515 1.70 51.12 11 -7.9302 1.5018 1.95 17.94 12 -75.3443 3.0251 13 101.9120 2.8009 1.59 61.31 14 256.5227 0.8600 15 Infinity 0.5000 1.52 64.20 16 Infinity 1.6000 17 Infinity 0.5000 1.52 64.20 18 Infinity 0.1253 IMA / /

[0455] Table 33

[0456] In this example, the seventh lens is an aspherical lens. Table 34 shows the cone coefficient k and the coefficients of various high-order terms that can be used for the surface of the aspherical lens in this example.

[0457] Surf K A B C D E F G H I 13 199.9985 -2.1288E-03 1.4711E-05 -4.2413E-06 -4.4005E-08 7.2442E-08 -5.9477E-09 -8.8104E-11 2.36792E-11 -6.28831E-13 14 200.0070 -1.8317E-03 -6.1645E-05 1.4615E-05 -1.7407E-06 1.0371E-07 -1.5833E-09 -1.5210E-10 8.20394E-12 -1.21591E-13

[0458] Table 34

[0459] Example 18

[0460] like Fig.18 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0461] The first lens L1 has negative power, the first side surface S1 of the first lens is convex, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is concave. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is convex. The seventh lens L7 has positive power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0462] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0463] In this example, the focal length F of the optical lens is 7.9772 mm, the total length TTL of the optical lens is 36.9975 mm, and the maximum field of view FOV of the optical lens is 70.10°.

[0464] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0465] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0466] Table 35 shows the basic structural parameters of the optical lens of Example 18, where the units of the radius of curvature Radius and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0467]

[0468]

[0469] Table 35

[0470] In this example, the seventh lens is an aspherical lens. Table 36 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0471] Surf K A B C D E F G H I 13 199.0339 -2.1287E-03 1.4717E-05 -4.2412E-06 -4.4008E-08 7.2442E-08 -5.9478E-09 -8.8104E-11 2.36793E-11 -6.28821E-13 14 198.9998 -1.8310E-03 -6.1660E-05 1.4614E-05 -1.7407E-06 1.0371E-07 -1.5833E-09 -1.5210E-10 8.20395E-12 -1.21591E-13

[0472] Table 36

[0473] Example 19

[0474] like Fig.19 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0475] The first lens L1 has negative power, the first side surface S1 of the first lens is concave, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is concave. The seventh lens L7 has positive power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0476] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0477] In this example, the focal length F of the optical lens is 8.0283 mm, the total length TTL of the optical lens is 36.0164 mm, and the maximum field of view FOV of the optical lens is 70.10°.

[0478] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0479] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0480] Table 37 shows the basic structural parameters of the optical lens of Example 19, where the units of the radius of curvature and the thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0481] Surf Radius Thickness Nd Vd 1 -49.1682 1.5000 1.53 48.84 2 7.8486 3.6579 3 -8.0425 2.2188 1.92 20.88 4 -11.3127 0.7952 5 57.8753 3.6064 1.59 68.34 6 -17.4396 0.1000 7 13.6346 3.2949 1.69 54.75 8 78.3784 3.4179 STO Infinity 4.2478 10 10.4217 3.4568 1.88 39.22 11 -13.0549 1.0995 1.95 17.94 12 20.1575 2.4127 13 28.4083 3.3000 1.59 61.31 14 33.5369 0.1420 15 Infinity 0.5000 1.52 64.20 16 Infinity 1.6000 17 Infinity 0.5000 1.52 64.20 18 Infinity 0.1664 IMA / /

[0482] Table 37

[0483] In this example, the seventh lens is an aspherical lens. Table 38 shows the cone coefficient k and various high-order coefficients that can be used for the aspherical lens surface in this example.

[0484]

[0485]

[0486] Table 38

[0487] Example 20

[0488] like Fig. 20 As shown, the optical lens includes, from the first side to the second side, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, an aperture STO, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter, a protective glass and an imaging surface IMA.

[0489] The first lens L1 has negative power, the first side surface S1 of the first lens is concave, and the second side surface S2 of the first lens is concave. The second lens L2 has negative power, the first side surface S3 of the second lens is concave, and the second side surface S4 of the second lens is convex. The third lens L3 has positive power, the first side surface S4 of the third lens is convex, and the second side surface S5 of the third lens is convex. The fourth lens L4 has positive power, the first side surface S6 of the fourth lens is convex, and the second side surface S7 of the fourth lens is concave. The fifth lens L5 has positive power, the first side surface S8 of the fifth lens is convex, and the second side surface S10 of the fifth lens is convex. The sixth lens L6 has negative power, the first side surface S10 of the sixth lens is concave, and the second side surface S11 of the sixth lens is concave. The seventh lens L7 has positive power, the first side surface S12 of the seventh lens is convex, and the second side surface S13 of the seventh lens is concave. The filter has a first side surface S14 and a second side surface S15 of the filter, and the protective glass has a first side surface S16 and a second side surface S17 of the protective glass. Light from the object passes through the surfaces S1 to S17 in sequence and is finally imaged on the imaging surface IMA.

[0490] It should be noted that, in this example, the second lens and the third lens are spaced apart. To keep the numbers consistent with the previous examples, the first side surface of the third lens is still expressed as S4.

[0491] In this example, the focal length F of the optical lens is 8.0989 mm, the total length TTL of the optical lens is 36.1262 mm, and the maximum field of view FOV of the optical lens is 70.10°.

[0492] In this example, the fifth lens and the sixth lens are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S10, but for the first side surface and the second side surface, when the curvature radius is the same, the surface shapes of the two are different, so the second side surface S10 of the fifth lens is convex, and the first side surface S10 of the sixth lens is concave.

[0493] In this example, both the first side surface of the seventh lens and the second side surface of the seventh lens have an inflection point.

[0494] Table 39 shows the basic structural parameters of the optical lens of Example 20, where the units of the radius of curvature and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity means infinity.

[0495]

[0496]

[0497] Table 39

[0498] In this example, the seventh lens is an aspherical lens. Table 40 shows the cone coefficient k and various high-order coefficients that can be used for the surface of the aspherical lens in this example.

[0499] Surf K A B C D E F G H I 13 -99.0000 -9.0506E-04 -4.6731E-05 2.1763E-06 -1.5345E-07 6.8470E-09 -1.2221E-10 7.2959E-13 -99.0000 -9.0506E-04 14 37.2070 -1.2992E-03 -3.6338E-05 2.2677E-06 -1.3777E-07 6.0966E-09 -1.3433E-10 9.9469E-13 37.2070 -1.2992E-03

[0500] Table 40 In summary, Examples 1 to 20 satisfy the relationship shown in Table 41.

[0501]

[0502]

[0503]

[0504] Tables 41 and 42 give the focal length values ​​F (unit: mm) of the entire group of optical lenses of Examples 1 to 20.

[0505]

[0506]

[0507]

[0508] Table 42

[0509] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0510] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0511] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0512] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical lens, characterized in that: include: A first lens, wherein the first lens has negative optical power, a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface; A second lens, wherein the second lens has negative optical power, and a first side surface of the second lens and a second side surface of the second lens are both concave surfaces; A third lens, the third lens has positive optical power, and the first side surface of the third lens and the second side surface of the third lens are both convex surfaces; a fourth lens having positive optical power, wherein a first side surface of the fourth lens is a convex surface; a fifth lens having optical power, wherein a first side surface of the fifth lens is a convex surface; a sixth lens having optical power, wherein the second side surface of the sixth lens is a convex surface; The seventh lens has optical power.

2. An optical lens, characterized in that: include: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having positive refractive power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having optical power; A distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens satisfies the following condition: d7 / TTL≥0.

12.

3. An optical lens, characterized in that: include: A first lens, wherein the first lens has negative optical power, and the second side surface of the first lens is a concave surface; a second lens, wherein the second lens has negative optical power, and a first side surface of the second lens is a concave surface; A third lens, the third lens has positive optical power, and the second side surface of the third lens is a convex surface; a fourth lens having positive optical power, wherein a first side surface of the fourth lens is a convex surface; a fifth lens having optical power, wherein a first side surface of the fifth lens is a convex surface; a sixth lens having optical power; a seventh lens having optical power; Wherein, the optical powers of the fifth lens and the sixth lens are opposite in positive and negative; A distance d11 from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens and a total optical length TTL of the optical lens satisfy the following: d11 / TTL≥0.03; A distance d7 from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens and the total optical length TTL of the optical lens satisfy the following: d7 / TTL≥0.09; The focal length F7 of the seventh lens and the focal length F of the entire optical lens group satisfy: |F7 / F|≥2.

5.

4. The optical lens according to claim 3, characterized in that: A distance d12 on the optical axis from the second side surface of the first lens to the first side surface of the second lens and an axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens satisfy the following: d12 / TL≤0.

17.

5. The optical lens according to claim 3, characterized in that: The combined focal length value F56 of the fifth lens and the sixth lens and the entire focal length value F of the optical lens group satisfy the following: 0<F56 / F≤7.

6. The optical lens according to claim 3, characterized in that: An axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens and a center thickness d3 of the second lens satisfy: TL / d3≥10.

7. The optical lens according to claim 3, characterized in that: An axial distance TL from the first side surface of the first lens to the second side surface of the seventh lens and a distance d34 on the optical axis from the second side surface of the third lens to the first side surface of the fourth lens satisfy the following: 25≤TL / d34.

8. The optical lens according to claim 3, characterized in that: The curvature radius R11 of the second side surface of the sixth lens satisfies the following relationship with the focal length F of the entire optical lens set: -15≤R11 / F≤-2.

5.

9. The optical lens according to claim 3, characterized in that: The optical lens satisfies at least one of the following conditional expressions: R11 / F≤-0.01, d11 / TTL≥0.05, 0.055≤d11 / TTL≤0.2, d7 / TTL≥0.1, 0.1≤d7 / TTL≤0.4, BFL / TTL≥0.02, BFL / TTL≥0.05, TTL / H / FOV≤0.1, TTL / H / FOV≤0.08, F / ENPD≤2.0, F / ENPD ≤1.8, TTL / (H / 2)≥5, TTL / (H / 2)≥6.5, D13 / H≥0.7, D13 / H≥0.85, F3 / F≤3, |R7 / R8|≤2.5, |R7 / R8|≤1.

8. arctan(1 / K(S2)≥30°, arctan(1 / K(S2)≥35°, (d3+d4) / TTL≥0.05, (d3+d4) / TTL≥0.08, (H / 2) / ( F*tan(θ / 2)≥0.6, (H / 2) / (F*tan(θ / 2)≥0.75, (R1 / D1) / (R2 / D2)≤4, (R1 / D1) / (R2 / D2)≤2, (R2-R3) / (R2+R3)≤-2, (R2-R3) / (R2+R3)≤-3, F23 / F≤-0.5, F23 / F≤-1.5, F1 / F≥-8, F1 / F≥-4, |(HF*θ) / (F*θ )|≤0.2, |(HF*θ) / (F*θ)|≤0.1, |Rj1| / (Φj1 / 2)≤5, 0≤d23 / TL≤0.08, -8≤F2 / F, -7≤F2 / F≤-0.2, -2.1 ≤MAX[F1, F2] / F≤-0.1, |F7 / F|≥3.5, d12 / TL≤0.16, 0.5≤F56 / F≤6.2, 1.2≤F4 / F≤3, -4≤F5 / F6≤-0.2, -2≤F2 / F3≤-0.2, TL / d3≥13, 28≤TL / d34≤400, -2≤R6 / R7≤-0.2, wherein R11 is the radius of curvature of the second side surface of the sixth lens, F is the focal length of the entire group of the optical lens, d11 is the distance from the second side surface of the sixth lens to the first side surface of the seventh lens on the optical axis of the optical lens, TTL is the total optical length of the optical lens, d7 is the distance from the second side surface of the fourth lens to the first side surface of the fifth lens on the optical axis of the optical lens, BFL is the optical back focus of the optical lens, and FOV is the optical wherein: H is the image height corresponding to the maximum field angle of the optical lens, ENPD is the entrance pupil diameter of the optical lens, D13 is the aperture of the second side surface of the seventh lens, F3 is the focal length of the third lens, R7 is the radius of curvature of the first side surface of the fourth lens, R8 is the radius of curvature of the second side surface of the fourth lens, arctan(1 / K(S2) is the maximum opening angle of the second side surface of the first lens, d3 is the center thickness of the second lens, d4 is the center thickness of the third lens, θ is the arc value of the maximum field angle of the optical lens, and R1 is the radius of curvature of the first side surface of the first lens. The curvature radius of the first lens is as follows: R2 is the curvature radius of the second side surface of the first lens, D1 is the light-clearing aperture of the first side surface of the first lens, D2 is the light-clearing aperture of the second side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, F23 is the focal length of the cemented lens composed of the second lens and the third lens, F1 is the focal length of the first lens, Rj1 is the curvature radius of the cemented surface of the first cemented lens, Φj1 is the light-clearing aperture of the cemented surface of the first cemented lens, d23 is the distance from the second side surface of the second lens to the first side surface of the third lens on the optical axis, and TL is the distance of the first The on-axis distance from the first side surface of the lens to the second side surface of the seventh lens, F2 is the focal length value of the second lens, F7 is the focal length value of the seventh lens, d12 is the distance from the second side surface of the first lens to the first side surface of the second lens on the optical axis, F56 is the combined focal length value of the fifth lens and the sixth lens, F4 is the focal length value of the fourth lens, F5 is the focal length value of the fifth lens, F6 is the focal length value of the sixth lens, d34 is the distance from the second side surface of the third lens to the first side surface of the fourth lens on the optical axis, and R6 is the curvature radius of the second side surface of the third lens.

10. An electronic device, characterized in that: The invention comprises the optical lens according to any one of claims 1 to 9 and an imaging element for converting an optical image formed by the optical lens into an electrical signal.

Images