Optical lens and electronic equipment

Abstract

The invention discloses an optical lens and electronic equipment. The optical lens sequentially comprises a first lens to a seventh lens from a first side to a second side along an optical axis. The first lens has negative focal power, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface; the second lens has negative focal power, and the first side surface of the second lens is a concave surface; the third lens has positive focal power, and the first side surface of the third lens and / or the second side surface of the third lens are / is convex surfaces; the fourth lens has positive focal power, and the first side surface of the fourth lens and / or the second side surface of the fourth lens are / is convex surfaces; the fifth lens has focal power; the sixth lens has focal power; the seventh lens has positive focal power; wherein the fifth lens and the sixth lens are glued to form a glued lens.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to an optical lens and electronic equipment. Background Art

[0002] With the rapid development of intelligent driving and assisted driving technologies, automotive lenses, as core components for vehicle perception of the external environment, are widely used in systems such as driving records, surround view monitoring, autonomous driving, and visual recognition. Therefore, automotive lenses must meet the stringent requirements of high-definition imaging, wide viewing angle coverage, and low distortion.

[0003] The current mainstream design for automotive lenses utilizes a multi-lens structure. The aberration correction capability of the lens group directly determines the image quality. Therefore, automotive lenses must possess efficient and stable aberration correction capabilities to adapt to the installation and usage requirements of different vehicle models. However, most existing automotive lenses still lack sufficient aberration correction capabilities. Summary of the Invention

[0004] In a first aspect, the present application provides an optical lens, which includes, in order from a first side to a second side along an optical axis: a first lens having negative optical power, wherein the first side surface of the first lens is convex and the second side surface of the first lens is concave; a second lens having negative optical power, wherein the first side surface of the second lens is concave; a third lens having positive optical power, wherein the first side surface of the third lens and / or the second side surface of the third lens are convex; a fourth lens having positive optical power, wherein the first side surface of the fourth lens and / or the second side surface of the fourth lens are convex; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens having positive optical power; wherein the fifth lens and the sixth lens are cemented to form a cemented lens; the optical power of the fifth lens and the sixth lens have opposite positive and negative properties; the number of lenses having optical power in the optical lens is seven; and the optical lens satisfies the following conditions: 0.02≤d6 / F≤0.43; wherein d6 is the center distance between the third lens and the fourth lens, and F is the focal length of the optical lens.

[0005] According to an exemplary embodiment of the present application, the second side surface of the second lens is a convex surface or a concave surface.

[0006] According to an exemplary embodiment of the present application, the first side surface of the third lens is convex, and the second side surface of the third lens is convex; or, the first side surface of the third lens is convex, and the second side surface of the third lens is concave; or, the first side surface of the third lens is concave, and the second side surface of the third lens is convex.

[0007] According to an exemplary embodiment of the present application, the first side of the fourth lens is a convex surface, and the second side of the fourth lens is a convex surface; or, the first side of the fourth lens is a convex surface, and the second side of the fourth lens is a concave surface; or, the first side of the fourth lens is a concave surface, and the second side of the fourth lens is a convex surface.

[0008] According to an exemplary embodiment of the present application, the optical power of the fifth lens is positive, and the optical power of the sixth lens is negative.

[0009] According to an exemplary embodiment of the present application, the optical power of the fifth lens is negative, and the optical power of the sixth lens is positive.

[0010] According to an exemplary embodiment of the present application, the first side of the fifth lens is a convex surface, and the second side of the fifth lens is a convex surface; or, the first side of the fifth lens is a concave surface, and the second side of the fifth lens is a convex surface; or, the first side of the fifth lens is a concave surface, and the second side of the fifth lens is a concave surface; or, the first side of the fifth lens is a convex surface, and the second side of the fifth lens is a concave surface.

[0011] According to an exemplary embodiment of the present application, the first side of the seventh lens is a convex surface, and the second side of the seventh lens is a convex surface; or, the first side of the seventh lens is a concave surface, and the second side of the seventh lens is a convex surface; or, the first side of the seventh lens is a convex surface, and the second side of the seventh lens is a concave surface.

[0012] According to an exemplary embodiment of the present application, the back focal length BFL of the optical lens and the focal length F of the optical lens satisfy: 0.95 ≤ BFL / F ≤ 2.22.

[0013] According to an exemplary embodiment of the present application, the back focal length BFL of the optical lens and the total optical length TTL of the optical lens satisfy: 0.14 ≤ BFL / TTL ≤ 0.32.

[0014] According to an exemplary embodiment of the present application, the sagittal height SAG14 of the second side of the seventh lens and the central thickness d13 of the seventh lens satisfy: 0.04 ≤ |SAG14 / d13| ≤ 0.48.

[0015] According to an exemplary embodiment of the present application, the central distance d2 between the first lens and the second lens and the focal length F of the optical lens satisfy: 0.7 ≤ d2 / F ≤ 1.24.

[0016] According to an exemplary embodiment of the present application, the central distance d2 between the first lens and the second lens and the total optical length TTL of the optical lens satisfy: 0.1 ≤ d2 / TTL ≤ 0.18.

[0017] According to an exemplary embodiment of the present application, the focal length F7 of the seventh lens and the focal length F of the optical lens satisfy: 2 ≤ F7 / F ≤ 10.

[0018] According to an exemplary embodiment of the present application, the focal length F7 of the seventh lens and the focal length F of the optical lens satisfy: 4.5 ≤ F7 / F ≤ 7.8.

[0019] According to an exemplary embodiment of the present application, the focal length F1 of the first lens and the focal length F of the optical lens satisfy: -2.75 ≤ F1 / F ≤ -1.35.

[0020] According to an exemplary embodiment of the present application, the focal length F1 of the first lens and the focal length F of the optical lens satisfy: -2.1 ≤ F1 / F ≤ -1.5.

[0021] According to an exemplary embodiment of the present application, the maximum aperture diameter D of the optical lens, the full image height H of the optical lens, and the focal length F of the optical lens satisfy: 0.24 ≤ D / H / F ≤ 0.52.

[0022] According to an exemplary embodiment of the present application, the radius of curvature R1 of the first side of the first lens and the total optical length TTL of the optical lens satisfy: 0.33 ≤ R1 / TTL ≤ 0.79.

[0023] According to an exemplary embodiment of the present application, the focal length F of the optical lens, the maximum field angle radian value θ of the optical lens, and the maximum aperture diameter D of the optical lens satisfy: 0.41 ≤ (F×θ) / D ≤ 0.91.

[0024] According to an exemplary embodiment of the present application, the central distance d4 between the second lens and the third lens, the radius of curvature R4 of the second side of the second lens, and the radius of curvature R5 of the first side of the third lens satisfy: 0.08 ≤ 丨(d4 - R4) / R5丨 ≤ 0.78.

[0025] According to an exemplary embodiment of the present application, the total optical length TTL of the optical lens and the maximum aperture diameter D of the optical lens satisfy: 1.38 ≤ TTL / D ≤ 3.07.

[0026] According to an exemplary embodiment of the present application, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: -1.47 ≤ F5 / F6 ≤ -0.63.

[0027] According to an exemplary embodiment of the present application, 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: -0.77 ≤ R2 / R3 ≤ -0.29.

[0028] According to an exemplary embodiment of the present application, the sag SAG2 of the second side surface of the first lens, the clear aperture D2 corresponding to the maximum field angle of view of the optical lens on the second side surface of the first lens, the sag SAG3 of the first side surface of the second lens, and the clear aperture D3 corresponding to the maximum field angle of view of the optical lens on the first side surface of the second lens satisfy: -5.2 ≤ (SAG2 / D2) / (SAG3 / D3) ≤ -1.66.

[0029] According to an exemplary embodiment of the present application, the central thickness d1 of the first lens, the central thickness d3 of the second lens, the central thickness d5 of the third lens, the central thickness d7 of the fourth lens, the central thickness d10 of the fifth lens, the central thickness d11 of the sixth lens, and the central thickness d13 of the seventh lens satisfy: 0.41 ≤ (d1 + d3 + d5 + d7 + d10 + d11 + d13) / TTL ≤ 0.69.

[0030] According to an exemplary embodiment of the present application, the optical power φ1 of the first lens, the optical power φ2 of the second lens, and the optical power φ of the optical lens satisfy: 0.69 ≤ (|φ1| + |φ2|) / |φ| ≤ 1.22.

[0031] According to an exemplary embodiment of the present application, the sag SAG14 of the second side surface of the seventh lens and the clear aperture D14 corresponding to the maximum field angle of view of the optical lens on the second side surface of the seventh lens satisfy: -0.19 ≤ SAG14 / D14 ≤ -0.0 and 1.

[0032] According to an exemplary embodiment of the present application, the central distance d4 between the second lens and the third lens and the total optical length TTL of the optical lens satisfy: 0.002 ≤ d4 / TTL ≤ 0.098.

[0033] According to an exemplary embodiment of the present application, the focal length F2 of the second lens and the focal length F of the optical lens satisfy: -6.2 ≤ F2 / F ≤ -1.3.

[0034] According to an exemplary embodiment of the present application, the radius of curvature R7 of the first side surface of the fourth lens, the central thickness d7 of the fourth lens, and the radius of curvature R8 of the second side surface of the fourth lens satisfy: -4.67 ≤ R7 / (d7 + R8) ≤ 10.44.

[0035] According to an exemplary embodiment of the present application, a center distance d6 between the third lens and the fourth lens and a center thickness d7 of the fourth lens satisfy: 0.01≤d6 / d7≤0.39.

[0036] According to an exemplary embodiment of the present application, the second side surface angle arctan(1 / K(S14)) of the seventh lens satisfies: 7≤|arctan(1 / K(S14))|≤54.

[0037] According to an exemplary embodiment of the present application, the focal length F4 of the fourth lens and the focal length F of the optical lens satisfy: 1.88≤F4 / F≤4.96.

[0038] According to an exemplary embodiment of the present application, the focal length F3 of the third lens and the focal length F of the optical lens satisfy: 1.63≤F3 / F≤5.55.

[0039] According to an exemplary embodiment of the present application, the center distance d12 between the sixth lens and the seventh lens and the total optical length TTL of the optical lens satisfy: 0.05≤d12 / TTL≤0.11.

[0040] According to an exemplary embodiment of the present application, the center distance d2 between the first lens and the second lens and the focal length F1 of the first lens satisfy: 0.25≤|d2 / F1|≤0.82.

[0041] According to an exemplary embodiment of the present application, the center distance d6 between the third lens and the fourth lens, the focal length F3 of the third lens, and the focal length F4 of the fourth lens satisfy: 0<d6 / (F3+F4)≤0.1.

[0042] According to an exemplary embodiment of the present application, the Abbe number Vd2 of the second lens and the Abbe number Vd1 of the first lens satisfy: Vd2>1.8Vd1.

[0043] According to an exemplary embodiment of the present application, a radius of curvature at an edge of the second side surface of the seventh lens is smaller than a radius of curvature at a center of the second side surface of the seventh lens.

[0044] According to an exemplary embodiment of the present application, the optical back focus BFL of the optical lens and the focal length F7 of the seventh lens element satisfy: 0.17≤BFL / F7≤0.67.

[0045] According to an exemplary embodiment of the present application, the optical lens satisfies at least one of the following relationships:

[0046] 1.11 ≤ BFL / F ≤ 1.94, 0.16 ≤ BFL / TTL ≤ 0.29, 0.04 ≤ |SAG14 / d13| ≤ 0.75, 0.81 ≤ d2 / F ≤ 1.08, 0.11 ≤ d2 / TTL ≤ 0.16, 2.83 ≤ F7 / F ≤ 7.67, -2.39 ≤ F1 / F ≤ -1.58, 0.27 ≤ D / H / F ≤ 0.46, 0.38 ≤ R1 / TTL ≤ 0.69, 0.47 ≤ (F×θ) / D ≤ 0.79, 0.09 ≤ |(d4 - R4) / R5| ≤ 0.69, 1.62 ≤ TTL / D ≤ 2.67, -1.4 ≤ F5 / F6 ≤ -0.73, -0.68 ≤ R2 / R3 ≤ -0.34, -4.6 ≤ (SAG2 / D2) / (SAG3 / D3) ≤ -1.9, 0.48 ≤ (d1 + d3 + d5 + d7 + d10 + d11 + d13) / TTL ≤ 0.61, 0.81 ≤ (|φ1| + |φ2|) / |φ| ≤ 1.07, -0.17 ≤ SAG14 / D14 ≤ -0.01, 0.003 ≤ d4 / TTL ≤ 0.085, -6.02 ≤ F2 / F ≤ -1.5, -4.07 ≤ R7 / (d7 + R8) ≤ 9.09, 0.015 ≤ d6 / d7 ≤ 0.35, 0.02 ≤ d6 / F ≤ 0.38, 8 ≤ |arctan(1 / K(S14))| ≤ 47, 2.21 ≤ F4 / F ≤ 4.32, 1.93 ≤ F3 / F ≤ 4.82, and 0.002 ≤ d6 / (F3 + F4) ≤ 0.08;

[0047] Wherein, BFL is the optical back focus of the optical lens, TTL is the total optical length of the optical lens, D is the maximum clear aperture of the optical lens, H is the full image height of the optical lens, F is the focal length of the optical lens, θ is the maximum field angle of the optical lens in radians, φ is the optical power of the optical lens, R1 is the curvature radius of the first side surface of the first lens, R2 is the curvature radius of the second side surface of the first lens, R3 is the curvature radius of the first side surface of the second lens, and R4 is the curvature radius of the second side surface of the second lens , R5 is the first side curvature radius of the third lens, R7 is the first side curvature radius of the fourth lens, R8 is the second side curvature radius of the fourth lens, F1 is the focal length of the first lens, F2 is the focal length of the second lens, F3 is the focal length of the third 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, F7 is the focal length of the seventh lens, SAG2 is the second side sag of the first lens, SAG3 is the first side sag of the second lens Surface sag, SAG14 is the sag of the second side surface of the seventh lens, d1 is the center thickness of the first lens, d2 is the center distance between the first lens and the second lens, d3 is the center thickness of the second lens, d4 is the center distance between the second lens and the third lens, d5 is the center thickness of the third lens, d6 is the center distance between the third lens and the fourth lens, d7 is the center thickness of the fourth lens, d10 is the center thickness of the fifth lens, d11 is the center thickness of the sixth lens, d13 is the center thickness of the seventh lens, D2 is the clear aperture corresponding to the second side surface of the first lens and the maximum field of view of the optical lens, D3 is the clear aperture corresponding to the first side surface of the second lens and the maximum field of view of the optical lens, D14 is the clear aperture corresponding to the second side surface of the seventh lens and the maximum field of view of the optical lens, φ1 is the optical power of the first lens, φ2 is the optical power of the second lens, and arctan(1 / K(S14)) is the opening angle of the second side surface of the seventh lens.

[0048] According to an exemplary embodiment of the present application, the optical lens satisfies at least one of the following relationships:

[0049] 1.113 ≤ BFL / F ≤ 1.932, 0.163 ≤ BFL / TTL ≤ 0.282, 0.048 ≤ |SAG14 / d13| ≤ 0.414, 0.818 ≤ d2 / F ≤ 1.076, 0.119 ≤ d2 / TTL ≤ 0.157, 2.837 ≤ F7 / F ≤ 7.669, -2.39 ≤ F1 / F ≤ -1.592, 0.277 ≤ D / H / F ≤ 0.454, 0.389 ≤ R1 / TTL ≤ 0.687, 0.478 ≤ (F×θ) / D ≤ 0.787, 0.095 ≤ |(d4 - R4) / R5| ≤ 0.682, 1.622 ≤ TTL / D ≤ 2.667, -1.274 ≤ F5 / F6 ≤ -0.739, -0.67 ≤ R2 / R3 ≤ -0.34, -4.521 ≤ (SAG2 / D2) / (SAG3 / D3) ≤ -1.959, 0.486 ≤ (d1 + d3 + d5 + d7 + d10 + d11 + d13) / TTL ≤ 0.603, 0.817 ≤ (|φ1| + |φ2|) / |φ| ≤ 1.061, -0.167 ≤ SAG14 / D14 ≤ -0.015, 0.003 ≤ d4 / TTL ≤ 0.084, -5.232 ≤ F2 / F ≤ -1.765, -4.063 ≤ R7 / (d7 + R8) ≤ 9.079, 0.018 ≤ d6 / d7 ≤ 0.341, 0.021 ≤ d6 / F ≤ 0.372, 8.54 ≤ |arctan(1 / K(S14))| ≤ 46.356, 2.218 ≤ F4 / F ≤ 4.311, 1.931 ≤ F3 / F ≤ 4.819, 0.346 ≤ |d2 / F1| ≤ 0.641, 0.003 ≤ d6 / (F3 + F4) ≤ 0.071, and 0.007 ≤ d12 / TTL ≤ 0.096;

[0050] Wherein, BFL is the optical back focus of the optical lens, TTL is the total optical length of the optical lens, D is the maximum clear aperture of the optical lens, H is the full image height of the optical lens, F is the focal length of the optical lens, θ is the maximum field angle of the optical lens in radians, φ is the optical power of the optical lens, R1 is the curvature radius of the first side of the first lens, R2 is the curvature radius of the second side of the first lens, R3 is the curvature radius of the first side of the second lens, R4 is the curvature radius of the second side of the second lens, R5 is the curvature radius of the first side of the second lens, The first side curvature radius of the third lens, R7 is the curvature radius of the first side of the fourth lens, R8 is the curvature radius of the second side of the fourth lens, F1 is the focal length of the first lens, F2 is the focal length of the second lens, F3 is the focal length of the third 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, F7 is the focal length of the seventh lens, SAG2 is the second side sag height of the first lens, SAG3 is the first side sag height of the second lens, SAG14 is the focal length of the the second side surface sagittal height of the seventh lens, d1 is the center thickness of the first lens, d2 is the center distance between the first lens and the second lens, d3 is the center thickness of the second lens, d4 is the center distance between the second lens and the third lens, d5 is the center thickness of the third lens, d6 is the center distance between the third lens and the fourth lens, d7 is the center thickness of the fourth lens, d10 is the center thickness of the fifth lens, d11 is the center thickness of the sixth lens, d12 is the center distance between the sixth lens and the seventh lens, d13 is the center thickness of the seventh lens, D2 is the clear aperture corresponding to the second side surface of the first lens and the maximum field of view of the optical lens, D3 is the clear aperture corresponding to the first side surface of the second lens and the maximum field of view of the optical lens, D14 is the clear aperture corresponding to the second side surface of the seventh lens and the maximum field of view of the optical lens, φ1 is the optical power of the first lens, φ2 is the optical power of the second lens, and arctan(1 / K(S14)) is the opening angle of the second side surface of the seventh lens.

[0051] The second aspect of the present application provides an electronic device comprising the optical lens of the exemplary embodiment described above, and at least one of an imaging element and a light source, wherein the imaging element is used to convert an optical image or optical information formed by the optical lens into an electrical signal, and the light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side of the optical lens.

[0052] According to the embodiment of the present application, the optical lens adopts seven lenses with optical power, wherein the first lens has negative optical power, the first side of the first lens is convex, and the second side of the first lens is concave; the second lens has negative optical power, and the first side of the second lens is concave; the third lens has positive optical power, and the first side of the third lens and / or the second side of the third lens are convex; the fourth lens has positive optical power, and the first side of the fourth lens and / or the second side of the fourth lens are convex; the fifth lens has optical power; the sixth lens has optical power; the seventh lens has positive optical power; the fifth lens and the sixth lens are cemented to form a cemented lens; the optical power of the fifth lens and the sixth lens have opposite positive and negative properties. The negative optical power design of the first lens enables it to collect divergent light with a large field of view. Under the same field of view angle, the optical system behind the first lens can have a larger light receiving surface, thereby increasing the aperture, achieving a larger amount of light entering and increasing the brightness of the image plane. The convex first side of the first lens has at least three functions: first, it facilitates the entry of light at wide angles, increasing the lens's light throughput; second, it prevents water droplets and dust from settling on the first side of the first lens; and third, it disperses external impacts, reducing the risk of lens breakage. The concave second side of the first lens also has at least three functions: first, it helps balance the optical path with the rear lens, minimizing aberrations; second, it adjusts the image field flatness, maintaining sharpness at both the edges and the center of the image; and third, it helps reduce the optical path length, making the lens more compact. Light rays diverging from the first lens are directed to the second lens, from which they transition to the third lens. The negative power design of the second lens, combined with the positive power design of the third lens, helps minimize aberrations and improve system resolution. The concave design of the first side of the second lens not only helps diverge light and correct the optical path of the optical system, but also helps reduce the center thickness of the second lens, reducing lens weight. The positive power of the third lens converges the front group of light rays and compresses their trajectory, playing a significant role in reducing the overall size of the lens. Furthermore, the negative-power first and second lenses compensate for the positive-power third lens, significantly reducing system aberrations at the third lens. If the first side of the third lens is convex, it can converge the divergent light from the second side of the second lens, balancing the resolution at the edges and center of the image. Furthermore, the curvature of the convex design reduces the focal length of the third lens, making the entire system more compact. If the second side of the third lens is convex, it can further converge the light before it exits the third lens, reducing the diameter of the rear lens group and contributing to lens miniaturization and lowering lens manufacturing costs. The positive-power fourth lens converges the light from the third lens a second time.If the first side of the fourth lens is convex, it can suppress the front group of light, making the light relatively flat and reducing the sensitivity of the system. If the second side of the fourth lens is convex, it can change the light trend, lower the height of the subsequent light, and then reduce the back port diameter, which helps to achieve system miniaturization. Under the conditions of the positive focal power design of the third and fourth lenses, the convex design of the first side and / or the second side of the third lens, and the convex design of the first side and / or the second side of the fourth lens, further controlling the ratio between the center distance d6 between the third and fourth lenses and the focal length F of the optical lens can ensure that the propagation path of light between the third and fourth lenses is neither too tight nor too loose, providing appropriate space for aberration correction. If the center distance between the third and fourth lenses is within the range allowed by the above control conditions, it can allow light emitted from the third lens to enter the fourth lens at an appropriate angle, facilitating the comprehensive correction of aberrations such as spherical aberration, coma, and astigmatism, so that light from different fields of view converges more evenly on the image plane, thereby improving image clarity and quality. Light emitted from the fourth lens passes through the fifth and sixth lenses in sequence before reaching the seventh lens. The fifth and sixth lenses, with opposite positive and negative optical powers, are bonded together to form a cemented lens. This has at least five benefits: First, it reduces the air gap between the fifth and sixth lenses, thereby reducing the overall length of the optical system. Second, the dispersion of the fifth and sixth lenses complements each other, helping to reduce chromatic aberration and improve image quality. Third, it reduces the number of components between the fifth and sixth lenses, thereby reducing the number of steps and costs. Fourth, it reduces field curvature and corrects off-axis aberrations in the system. Fifth, it rationally distributes focal length, facilitating thermal compensation and achieving good temperature performance. The positive power design of the seventh lens not only balances aberrations and improves resolution, but also suppresses light trends at the edges of the field of view, helping to reduce CRA. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which:

[0054] Figure 1 1 shows a schematic structural diagram of an optical lens according to Example 1 of the present application;

[0055] Figure 2 shows a modulation transfer function (MTF) curve of the optical lens according to Example 1 of the present application;

[0056] Figure 3 1 shows a schematic structural diagram of an optical lens according to Example 2 of the present application;

[0057] Figure 4 shows a modulation transfer function curve of the optical lens according to Example 2 of the present application;

[0058] Figure 5 1 shows a schematic structural diagram of an optical lens according to Example 3 of the present application;

[0059] Figure 6 shows a modulation transfer function curve of the optical lens according to Example 3 of the present application;

[0060] Figure 7 1 shows a schematic structural diagram of an optical lens according to Example 4 of the present application;

[0061] Figure 8 shows a modulation transfer function curve of the optical lens according to Example 4 of the present application;

[0062] Figure 9 1 shows a schematic structural diagram of an optical lens according to Example 5 of the present application;

[0063] Figure 10 shows a modulation transfer function curve of the optical lens according to Example 5 of the present application;

[0064] Figure 11 1 shows a schematic structural diagram of an optical lens according to Example 6 of the present application;

[0065] Figure 12 shows a modulation transfer function curve of the optical lens according to Example 6 of the present application;

[0066] Figure 13 1 shows a schematic structural diagram of an optical lens according to Example 7 of the present application;

[0067] Figure 14 shows a modulation transfer function curve of the optical lens according to Example 7 of the present application;

[0068] Figure 15 1 shows a schematic structural diagram of an optical lens according to Example 8 of the present application;

[0069] Figure 16 shows a modulation transfer function curve of the optical lens according to Example 8 of the present application;

[0070] Figure 17 1 shows a schematic structural diagram of an optical lens according to Example 9 of the present application;

[0071] Figure 18 shows a modulation transfer function curve of the optical lens according to Example 9 of the present application;

[0072] Figure 191 shows a schematic structural diagram of an optical lens according to Example 10 of the present application;

[0073] Figure 20 shows a modulation transfer function curve of the optical lens according to Example 10 of the present application;

[0074] Figure 21 1 shows a schematic structural diagram of an optical lens according to Example 11 of the present application;

[0075] Figure 22 shows a modulation transfer function curve of the optical lens according to Example 11 of the present application;

[0076] Figure 23 1 shows a schematic structural diagram of an optical lens according to Example 12 of the present application;

[0077] Figure 24 shows a modulation transfer function curve of the optical lens according to Example 12 of the present application;

[0078] Figure 25 1 shows a schematic structural diagram of an optical lens according to Example 13 of the present application;

[0079] Figure 26 shows a modulation transfer function curve of the optical lens according to Example 13 of the present application;

[0080] Figure 27 14 shows a schematic structural diagram of an optical lens according to Example 14 of the present application;

[0081] Figure 28 shows a modulation transfer function curve of the optical lens according to Example 14 of the present application;

[0082] Figure 29 1 shows a schematic structural diagram of an optical lens according to Example 15 of the present application;

[0083] Figure 30 shows a modulation transfer function curve of the optical lens according to Example 15 of the present application;

[0084] Figure 31 1 shows a schematic structural diagram of an optical lens according to Example 16 of the present application;

[0085] Figure 32 shows a modulation transfer function curve of the optical lens according to Example 16 of the present application;

[0086] Figure 33 17 shows a schematic structural diagram of an optical lens according to Example 17 of the present application;

[0087] Figure 34shows a modulation transfer function curve of the optical lens according to Example 17 of the present application;

[0088] Figure 35 1 shows a schematic structural diagram of an optical lens according to Example 18 of the present application;

[0089] Figure 36 shows a modulation transfer function curve of the optical lens according to Example 18 of the present application;

[0090] Figure 37 19 shows a schematic structural diagram of an optical lens according to Example 19 of the present application;

[0091] Figure 38 shows a modulation transfer function curve of the optical lens according to Example 19 of the present application;

[0092] Figure 39 1 shows a schematic structural diagram of an optical lens according to Example 20 of the present application;

[0093] Figure 40 shows a modulation transfer function curve of the optical lens according to Example 20 of the present application;

[0094] Figure 41 1 shows a schematic structural diagram of an optical lens according to Example 21 of the present application;

[0095] Figure 42 shows a modulation transfer function curve of the optical lens according to Example 21 of the present application;

[0096] Figure 43 1 shows a schematic structural diagram of an optical lens according to Example 22 of the present application;

[0097] Figure 44 shows a modulation transfer function curve of the optical lens according to Example 22 of the present application;

[0098] Figure 45 1 shows a schematic structural diagram of an optical lens according to Example 23 of the present application;

[0099] Figure 46 shows a modulation transfer function curve of the optical lens according to Example 23 of the present application;

[0100] Figure 47 1 shows a schematic structural diagram of an optical lens according to Example 24 of the present application;

[0101] Figure 48 shows a modulation transfer function curve of the optical lens according to Example 24 of the present application;

[0102] Figure 491 shows a schematic structural diagram of an optical lens according to Example 25 of the present application;

[0103] Figure 50 shows a modulation transfer function curve of the optical lens according to Example 25 of the present application;

[0104] Figure 51 1 shows a schematic structural diagram of an optical lens according to Example 26 of the present application;

[0105] Figure 52 The modulation transfer function curve of the optical lens according to Example 26 of the present application is shown. DETAILED DESCRIPTION

[0106] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0107] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0108] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0109] In this document, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the first side is called the first side surface of the lens, and the surface of each lens closest to the second side is called the second side surface of the lens.

[0110] It should also be understood that the terms "comprising," "including," and / or "having," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when describing embodiments of the present application, the term "may" is used to indicate "one or more embodiments of the present application." Furthermore, the term "exemplary" is intended to refer to an example or illustration.

[0111] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0112] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0113] The features, principles and other aspects of the present application are described in detail below.

[0114] According to an exemplary embodiment of the present application, the optical lens may include, for example, seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, and the seven lenses are arranged in sequence from the first side to the second side along the optical axis.

[0115] In an exemplary embodiment, the optical lens provided in the present application can be used as a light receiving lens or a light emitting lens, wherein: the light receiving lens is generally used to collect light from the object side space, and the collected light is used to form detection information, including but not limited to imaging, laser point cloud, etc.; the light emitting lens is generally used to transmit light from the light emitting unit to the object side space, and according to the function of the light, the light transmitted to the object side space can be divided into projection light for forming a projection image or detection light for detecting target object information, etc.

[0116] It is understood that when the optical lens provided in this application is used for a light receiving lens such as a camera lens, a laser radar receiving end lens, a microscope lens, or a telephoto lens, the "first side" referred to herein may refer to the object side, and the "second side" may refer to the image side (such as the side where the photoelectric sensor or retina is located). That is, light from the object side can be imaged on the image side, where the camera lens can be, for example, a car camera, an infrared camera, a drone camera, a night vision camera, a security monitoring camera, etc. When the optical lens provided in this application is used for a light emitting lens such as a projection lens or a laser radar transmitting end lens, the "first side" referred to herein may refer to the object side, and the "second side" may refer to the light source side.

[0117] In some possible implementations, the optical lens provided herein can also simultaneously perform both light receiving and light transmitting functions. For example, the optical lens provided herein is used in a LiDAR system that shares a common light receiving and light transmitting path, where the optical lens simultaneously transmits the laser light and receives the radar return beam. For another example, the optical lens provided herein is used in a system that integrates optical communication and radar, where the optical lens simultaneously transmits the modulated light signal and receives the radar return beam.

[0118] In an exemplary embodiment, the first lens may have a negative optical power to collect divergent light with a large field of view. Under the same field of view angle, the subsequent optical system can have a larger light receiving surface and the aperture can be enlarged, thereby obtaining a larger amount of light entering, thereby increasing the brightness of the image plane. The first side surface of the first lens is set to a convex surface, which is conducive to large-angle incident light entering the lens, thereby increasing the light throughput of the lens. In addition, the convex surface design not only increases the difficulty of water droplets and dust staying on the first side surface of the first lens, but also disperses external force impact and reduces the risk of lens breakage. The second side surface of the first lens is set to a concave surface, which is not only conducive to coordinating with the rear group of lenses to balance the optical path and reduce aberrations, but also can adjust the flatness of the image field so that the edge and center of the picture remain clear at the same time. The divergent effect of the concave surface on light is also conducive to reducing the length of the optical path, making the lens more compact.

[0119] In an exemplary embodiment, the second lens may have a negative optical power. The negative optical power design of the second lens, combined with the positive optical power design of the third lens, helps reduce aberrations and improve system resolution. The first side surface of the second lens is configured as a concave surface, which facilitates the divergence of light, thereby correcting the optical path of the optical system. In addition, the concave surface design also helps reduce the center thickness of the second lens, thereby reducing the weight of the lens. In addition, the second side surface of the second lens is configured as a convex surface, which not only facilitates the rapid divergence of light, thereby separating the central light from the peripheral light in each field of view, expanding the aperture, and increasing the system illumination, but also facilitates the correction of aberrations and achieves high resolution.

[0120] In an exemplary embodiment, the second lens may have a negative optical power. The negative optical power design of the second lens combined with the positive optical power design of the third lens helps to reduce aberrations and improve the resolution of the system. The first side surface of the second lens is set to a concave surface, which is conducive to the divergence of light, thereby correcting the optical path of the optical system. The second side surface of the second lens is set to a convex surface, which helps to avoid the risk of ghost images of the second lens and the third lens, and makes the second lens more convenient in design and assembly. In addition, the concave surface design of the first side surface of the second lens combined with the convex surface design of the second side surface of the second lens is also conducive to lowering the height of the light, reducing the front port diameter, and realizing a miniaturized design.

[0121] In an exemplary embodiment, the third lens may have positive optical power to converge the front group of light and compress the light trajectory, thereby reducing the overall size of the lens. The first lens and the second lens with negative optical power can compensate for the third lens with positive optical power, thereby greatly reducing the system aberration at the third lens. The first side of the third lens is set as a convex surface, which can converge the divergent light emitted from the second side of the second lens, so that the resolution at the edge of the picture and the resolution at the center are balanced. In addition, the curvature effect of the convex surface design also reduces the focal length of the third lens, making the entire system more compact. The second side of the third lens is set as a convex surface, which can further converge the light before it is emitted from the second side of the third lens, which is beneficial to reducing the aperture of the rear group of lenses, thereby achieving miniaturization of the lens and reducing the manufacturing cost of the lens.

[0122] In an exemplary embodiment, the third lens may have positive focal length to converge the front group of light and compress the light trajectory, thereby reducing the overall size of the lens. The first lens and the second lens with negative focal length can compensate for the third lens with positive focal length, thereby greatly reducing the system aberration at the third lens. The first side of the third lens is set as a convex surface, which can converge the divergent light emitted from the second side of the second lens, so that the resolution at the edge of the picture and the resolution at the center are balanced. In addition, the curvature effect of the convex surface design also reduces the focal length of the third lens, making the entire system more compact. The second side of the third lens is set as a concave surface, which can not only diverge the light and make it reach a higher imaging position to achieve large target surface imaging, but also increase the amount of light entering the rear lens and improve the brightness of the image surface.

[0123] In an exemplary embodiment, the third lens may have a positive optical power to converge the front group of light and compress the light trajectory, thereby reducing the overall size of the lens. The first lens and the second lens with negative optical power can compensate for the third lens with positive optical power, thereby greatly reducing the system aberration at the third lens. The first side surface of the third lens is set to a concave surface, which can more smoothly transition the light emitted from the second side surface of the second lens, thereby reducing sensitivity. In addition, the concave surface design can also collect as much light as possible to achieve a large light transmission. The second side surface of the third lens is set to a convex surface, which can compress the light and help to miniaturize the rear end of the lens.

[0124] In an exemplary embodiment, the fourth lens element may have positive optical power. The fourth lens element may be made of a low-refractive material to provide a high dispersion coefficient and a high thermal defocus coefficient, thereby reducing chromatic aberration and the effects of defocus caused by high and low temperatures. The fourth lens element may have a convex first surface, which can lower the front group of light rays, making the light relatively flat and improving system sensitivity. The fourth lens element may have a convex second surface, which can further change the light path and lower the height of subsequent light rays, thereby reducing the diameter of the lens rear port and facilitating miniaturization.

[0125] In an exemplary embodiment, the fourth lens may have positive optical power. The fourth lens may be made of a low-refractive material to provide a high dispersion coefficient and a high thermal defocus coefficient, thereby reducing chromatic aberration and the defocus effect caused by high and low temperatures. The first side of the fourth lens is set to a convex surface, which can suppress the front group of light, thereby making the light relatively flat and improving the sensitivity of the system. The second side of the fourth lens is set to a concave surface, which can balance the optical path difference between the center position and the edge position, raise the light trend, and enable the light to reach a higher position, and then be used with large-size chips.

[0126] In an exemplary embodiment, the fourth lens may have positive focal power. The fourth lens may be made of a low-refractive material to provide a high dispersion coefficient and a high thermal defocus coefficient, thereby reducing chromatic aberration and the defocus effect caused by high and low temperatures. The first side surface of the fourth lens is set to a concave surface, and the second side surface of the fourth lens is set to a convex surface. In combination with the first side surface of the third lens being set to a convex surface and the second side surface of the third lens being set to a concave surface, the first side surface of the fourth lens and the second side surface of the third lens can form a symmetrical structure, and the second side surface of the fourth lens and the first side surface of the third lens can form a symmetrical structure. The above-mentioned completely symmetrical structure is conducive to the balance of optical aberration and greatly reduces the sensitivity of the system.

[0127] In an exemplary embodiment, the fifth lens and the sixth lens are cemented together to form a cemented lens, and the optical power of the fifth lens and the sixth lens have opposite positive and negative properties. This arrangement allows for a smooth transition of light to the rear lens. The cementation of the fifth lens and the sixth lens not only reduces the air gap between them, thereby reducing the total length of the lens, but also reduces the number of assembly components between the fifth lens and the sixth lens, thereby reducing the assembly process and lowering the cost of the lens. In addition, the dispersion of the fifth lens and the sixth lens can complement each other, thereby reducing chromatic aberration and improving imaging quality. Furthermore, the fifth lens and the sixth lens can also reduce field curvature and correct the system's off-axis point aberrations. The fifth lens and the sixth lens can also reasonably distribute the focal length, which helps to achieve thermal compensation, thereby obtaining good temperature performance.

[0128] In an exemplary embodiment, the fifth and sixth lenses are cemented together to form a cemented lens. The fifth lens has positive optical power, while the sixth lens has negative optical power. This improves correction for chromatic aberration, spherical aberration, and field curvature. The first side of the fifth lens is convex, effectively converging light and lowering the height of subsequent light rays, thereby reducing the back port diameter and facilitating miniaturization. The second side of the fifth lens is convex, further altering the light path and lowering the height of subsequent light rays, further reducing the back port diameter and achieving miniaturization.

[0129] In an exemplary embodiment, the fifth lens and the sixth lens are cemented together to form a cemented lens. The fifth lens has positive optical power, while the sixth lens has negative optical power. This improves correction of chromatic aberration, spherical aberration, and field curvature. The first side of the fifth lens is concave, which reduces the light receiving aperture and diverges light toward the rear system, allowing peripheral light to reach a higher imaging position. The second side of the fifth lens is convex, which converges light, thereby lowering the light height and reducing the rear port diameter, contributing to miniaturization.

[0130] In an exemplary embodiment, the fifth lens has negative optical power, and its first and second side surfaces are concave. When the aperture is positioned between the fourth and fifth lenses, light from the aperture maximizes access to the rear lens group, improving illumination while also reducing the rear port diameter.

[0131] In an exemplary embodiment, the fifth lens has a negative optical power. The first side surface of the fifth lens is concave, and the second side surface of the fifth lens is convex. This allows the light emitted from the fifth lens, which is received by the sixth lens, to trend upward, helping to expand the imaging range.

[0132] In an exemplary embodiment, the fifth lens has negative optical power. The first side of the fifth lens is convex, which reduces system sensitivity, improves resolution, and reduces the aperture of the rear system, facilitating back-end miniaturization. The second side of the fifth lens is concave, which diverges the light that converges and then exits, balancing the optical path difference between the center and the periphery, raising the light trajectory and allowing it to reach a higher imaging position, enabling use with large-scale chips.

[0133] In an exemplary embodiment, the sixth lens element has negative optical power, a concave first side surface, and a concave second side surface. When the fifth lens element has positive optical power and both the first and second side surfaces are convex, combined with the cemented structure, this not only makes the lens structure more compact and reduces overall length, but also corrects various aberrations and chromatic aberrations in the system, improving the system's resolution. Furthermore, the sixth lens element's biconcave structure diverges light and raises its height, expanding the image plane while also balancing aberrations and improving resolution.

[0134] In an exemplary embodiment, the sixth lens element has negative optical power, a concave first surface, and a convex second surface. When the fifth lens element has positive optical power and a convex first surface, combined with the cemented structure, not only does this make the lens structure more compact and reduce overall length, but it also corrects various aberrations and chromatic aberrations in the system, improving the system's resolution. The concave first surface of the sixth lens element diverges light, raising it to a higher altitude, expanding the image plane, while also balancing aberrations and improving resolution. The convex second surface of the sixth lens element converges light, ensuring smooth entry into the rear system, reducing overall system sensitivity and improving resolution.

[0135] In an exemplary embodiment, the sixth lens element has positive optical power, with a convex first side and a convex second side. This effectively converges forward light, allowing diverging light to smoothly enter the rear optical system, reducing the diameter of the rear port. The convex first side of the sixth lens effectively converges light, lowering the height of subsequent light rays, thereby reducing the diameter of the rear port and facilitating miniaturization. The convex second side of the sixth lens further alters the light path, lowering the height of subsequent light rays, thereby reducing the diameter of the rear port and contributing to miniaturization.

[0136] In an exemplary embodiment, the sixth lens element has positive optical power. This allows it to converge light emitted from the front, allowing it to smoothly enter the rear optical system and reduce the diameter of the rear port. The first side of the sixth lens element is concave, which reduces the aperture of the light receiving area, allowing the light to diverge into the rear optical system, thereby allowing peripheral light to reach a higher imaging position. The second side of the sixth lens element is convex, converging the light and lowering its height, thereby reducing the diameter of the rear port and facilitating miniaturization.

[0137] In an exemplary embodiment, the sixth lens has positive optical power. This sixth lens can converge the light emitted from the front, lower the light trend, and allow it to smoothly enter the rear optical system, reducing the rear port diameter, which is conducive to the miniaturization of the rear end. The first side of the sixth lens is set as a convex surface, which can smoothly transition the light to the rear system, reduce the sensitivity of the system, improve the resolution capability, and reduce the diameter of the rear system, which is conducive to the miniaturization of the rear end. The second side of the sixth lens is set as a concave surface, which can diverge the light converged and emitted from the front, balance the optical path difference between the center position and the edge position, and at the same time raise the light trend so that the light reaches a higher imaging position, thereby being used with large-size chips.

[0138] In an exemplary embodiment, the seventh lens element has positive optical power. When the first side surface and / or the second side surface of the seventh lens element are aspherical, not only can aberrations be balanced and resolving power improved, but light ray patterns at the edges of the field of view can also be suppressed, helping to reduce CRA. The convex surface of the first side surface of the seventh lens element not only facilitates molding during manufacturing but also significantly improves resolution at the center. The convex surface of the second side surface of the seventh lens element helps reduce the energy level of ghost images at the edges, thereby reducing ghost images.

[0139] In an exemplary embodiment, the seventh lens element has positive optical power. When the first side surface and / or the second side surface of the seventh lens element are aspherical, this not only balances aberrations and improves resolution, but also reduces light ray behavior at the edges of the field of view, helping to reduce CRA. The concave first side surface of the seventh lens element facilitates telephoto and image expansion, while also balancing aberrations and improving resolution. The convex second side surface of the seventh lens element helps reduce the energy level of ghost images at the edges, thereby reducing ghost images.

[0140] In an exemplary embodiment, the seventh lens element has positive refractive power. When the first side surface and / or the second side surface of the seventh lens element are aspherical, not only can aberrations be balanced and resolution improved, but light distribution at the periphery of the field of view can also be reduced, thereby helping to reduce CRA. The convex first side surface of the seventh lens element effectively corrects optical path differences across the field of view and balances aberrations, while also reducing light distribution at the periphery of the field of view and helping to reduce CRA. The concave second side surface of the seventh lens element can diverge light, thereby expanding the image plane, while also balancing aberrations and improving resolution.

[0141] In an exemplary embodiment, the optical lens may further include an aperture, which may be positioned, for example, between the fourth and fifth lenses. This placement of the aperture facilitates a smooth transition of light to the rear of the system, reduces the aperture of the rear lens, and reduces the sensitivity of the optical lens during assembly. It should be understood that positioning the aperture between the fourth and fifth lenses is merely exemplary and is not a specific limitation in this application. The aperture may be positioned elsewhere as needed.

[0142] In an exemplary embodiment, at least one inflection point is provided on the first side surface of the seventh lens and the second side surface of the seventh lens. This arrangement can balance aberrations and improve resolution.

[0143] In an exemplary embodiment, the surface of the seventh lens may include one or more aspherical surfaces, which may be beneficial for correcting field curvature and improving resolution.

[0144] In an exemplary embodiment, the optical lens may further include a filter positioned between the seventh lens element and the image plane to filter light having different wavelengths. The optical lens may also include a protective glass disposed between the filter element and the image plane as needed to prevent damage to internal components (e.g., a chip) of the optical lens.

[0145] In an exemplary embodiment, the optical lens may further include a photosensitive element disposed on the second side. Optionally, the photosensitive element disposed on the second side may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0146] In an exemplary embodiment, the optical back focus BFL of the optical lens and the focal length F of the optical lens satisfy the following relationship: 0.95 ≤ BFL / F ≤ 2.22. Preferably, 1.11 ≤ BFL / F ≤ 1.94. Furthermore, 1.113 ≤ BFL / F ≤ 1.932. This design allows for a longer back focus, which in turn allows for greater assembly space while achieving miniaturization, facilitating adjustments and assembly by module manufacturers.

[0147] In an exemplary embodiment, the optical back focus (BFL) of the optical lens and the total optical length (TTL) of the optical lens satisfy the following relationship: 0.14 ≤ BFL / TTL ≤ 0.32. Preferably, 0.16 ≤ BFL / TTL ≤ 0.29. Furthermore, 0.163 ≤ BFL / TTL ≤ 0.282. This ensures that the BFL meets module assembly requirements and reduces the TTL, making the entire optical system more compact and facilitating miniaturization.

[0148] In an exemplary embodiment, the second side sag height SAG14 of the seventh lens and the center thickness d13 of the seventh lens satisfy the following relationship: 0.04 ≤ || SAG14 / d13 || ≤ 0.48. Preferably, 0.04 ≤ || SAG14 / d13 || ≤ 0.75. Furthermore, 0.048 ≤ || SAG14 / d13 || ≤ 0.414. This increases the ratio of the second side sag height of the seventh lens to the center thickness of the seventh lens, thereby increasing the optical back focus of the optical lens and reserving space for module assembly, facilitating focusing by module manufacturers.

[0149] In an exemplary embodiment, the center-to-center distance d2 between the first and second lens elements and the focal length F of the optical lens satisfy the following conditions: 0.7 ≤ d2 / F ≤ 1.24. Preferably, 0.81 ≤ d2 / F ≤ 1.08. Furthermore, 0.818 ≤ d2 / F ≤ 1.076. This allows the gap between the first and second lens elements to be controlled within a certain range, thereby preventing excessive light divergence and reducing the accumulation of aberrations (such as spherical aberration and coma). This allows for a more reasonable distribution of rear lens power, preserving more design space for overall aberration correction.

[0150] In an exemplary embodiment, the center-to-center distance d2 between the first and second lenses and the total optical length TTL of the optical lens satisfy the following conditions: 0.1 ≤ d2 / TTL ≤ 0.18. Preferably, 0.11 ≤ d2 / TTL ≤ 0.16. Furthermore, 0.119 ≤ d2 / TTL ≤ 0.157. This allows for the proper control of the gap between the first and second lenses, thereby reducing the optical system's sensitivity to mechanical tolerances and improving stability and yield during mass production.

[0151] In an exemplary embodiment, the focal length F7 of the seventh lens and the focal length F of the optical lens satisfy: 2≤F7 / F≤10. Preferably, 2.83≤F7 / F≤7.67, or, 4.5≤F7 / F≤7.8. Further, 2.837≤F7 / F≤7.669. In this way, the optical power of the seventh lens accounts for a relatively large proportion in the entire optical lens, and its ability to deflect light is weaker than that of other lenses, thereby leaving more room for correction, resulting in reduced system sensitivity. Controlling F7 / F≤10 can avoid a decrease in the ability of the rear group lens to control light in the edge field of view, and prevent aberrations such as field curvature, distortion, and magnification chromatic aberration, which are sensitive to the rear group, from causing a decrease in edge field resolution and deterioration in image quality.

[0152] In an exemplary embodiment, the focal length F1 of the first lens and the focal length F of the optical lens satisfy the following relationship: -2.75 ≤ F1 / F ≤ -1.35. Preferably, -2.39 ≤ F1 / F ≤ -1.58 or -2.1 ≤ F1 / F ≤ -1.5. Furthermore, -2.39 ≤ F1 / F ≤ -1.592. This allows for a rational distribution of lens focal lengths, which not only facilitates the entry of light rays with a wide field of view into the optical system, enabling wide-field imaging, but also stabilizes the light distribution at the edge of the field of view, reducing the aperture of the first lens and facilitating miniaturization.

[0153] In an exemplary embodiment, the maximum clear aperture D of the optical lens, the full image height H of the optical lens, and the focal length F of the optical lens satisfy the following conditions: 0.24 ≤ D / H / F ≤ 0.52. Preferably, 0.27 ≤ D / H / F ≤ 0.46. Furthermore, 0.277 ≤ D / H / F ≤ 0.454. This allows the optical lens to have the characteristics of a large target area and a small aperture while maintaining a fixed focal length.

[0154] In an exemplary embodiment, the radius of curvature R1 of the first side surface of the first lens and the total optical length TTL of the optical lens satisfy: 0.33 ≤ R1 / TTL ≤ 0.79. Preferably, 0.38 ≤ R1 / TTL ≤ 0.69. Further, 0.389 ≤ R1 / TTL ≤ 0.687. By controlling the ratio of R1 to TTL, the radius of curvature of the first side surface of the first lens can be made smaller. In this way, on the one hand, it can better collect large-angle object-side light with a smaller aperture, and on the other hand, it can improve the situation where ghost images are reflected into the lens, reduce the ghost image energy, and achieve the purpose of weak ghost images.

[0155] In an exemplary embodiment, the focal length F of the optical lens, the maximum field angle in radians θ of the optical lens, and the maximum aperture D of the optical lens satisfy: 0.41 ≤ (F × θ) / D ≤ 0.91. Controlling the ratio of the focal length, the maximum field angle, and the maximum aperture of the optical lens to satisfy this conditional formula can make the front aperture of the lens smaller and reduce the volume of the imaging system of the lens. Preferably, 0.47 ≤ (F × θ) / D ≤ 0.79. Further, 0.478 ≤ (F × θ) / D ≤ 0.787. In this way, it is beneficial to further reduce the front aperture of the lens and reduce the volume of the imaging system of the lens.

[0156] In an exemplary embodiment, the center distance d4 between the second lens and the third lens, the radius of curvature R4 of the second side surface of the second lens, and the radius of curvature R5 of the first side surface of the third lens satisfy: 0.08 ≤ 丨(d4 - R4) / R5丨 ≤ 0.78. Preferably, 0.09 ≤ 丨(d4 - R4) / R5丨 ≤ 0.69. Further, 0.095 ≤ 丨(d4 - R4) / R5丨 ≤ 0.682. In this way, the relevant reflection path and the light convergence landing point on the image plane can be effectively changed, and the ghost image energy level can be weakened.

[0157] In an exemplary embodiment, the total optical length TTL of the optical lens and the maximum aperture D of the optical lens satisfy: 1.38 ≤ TTL / D ≤ 3.07. Preferably, 1.62 ≤ TTL / D ≤ 2.67. Further, 1.622 ≤ TTL / D ≤ 2.667. In this way, the ratio of the total optical length to the maximum lens aperture can be controlled to be smaller, making the entire optical system more compact and beneficial to achieving miniaturization.

[0158] In an exemplary embodiment, the focal length F5 of the fifth lens and the focal length F6 of the sixth lens satisfy: -1.47 ≤ F5 / F6 ≤ -0.63. Preferably, -1.4 ≤ F5 / F6 ≤ -0.73. Further, -1.274 ≤ F5 / F6 ≤ -0.739. In this way, F5 / F6 can be controlled within a certain range, and then the axial chromatic aberration can be reduced to achieve an achromatic design.

[0159] In an exemplary embodiment, 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 the following relationship: -0.77 ≤ R2 / R3 ≤ -0.29. Preferably, -0.68 ≤ R2 / R3 ≤ -0.34. Furthermore, -0.67 ≤ R2 / R3 ≤ -0.34. This prevents excessive concentration of optical power in a single lens. The first and second lenses work together to achieve a stable divergence effect, meeting the system's requirements for light divergence.

[0160] In an exemplary embodiment, the second side sag SAG2 of the first lens, the clear aperture D2 corresponding to the second side of the first lens and the maximum field of view angle of the optical lens, the first side sag SAG3 of the second lens, and the clear aperture D3 corresponding to the first side of the second lens and the maximum field of view angle of the optical lens satisfy the following conditions: -5.2≤(SAG2 / D2) / (SAG3 / D3)≤-1.66. Preferably, -4.6≤(SAG2 / D2) / (SAG3 / D3)≤-1.9. Furthermore, -4.521≤(SAG2 / D2) / (SAG3 / D3)≤-1.959. In this way, after the light is emitted from the first lens, it can enter the second lens at a smaller incident angle, thereby reducing off-axis aberrations such as coma and astigmatism.

[0161] In an exemplary embodiment, the center thickness d1 of the first lens, the center thickness d3 of the second lens, the center thickness d5 of the third lens, the center thickness d7 of the fourth lens, the center thickness d10 of the fifth lens, the center thickness d11 of the sixth lens, and the center thickness d13 of the seventh lens satisfy the following conditions: 0.41≤(d1+d3+d5+d7+d10+d11+d13) / TTL≤0.69. Preferably, 0.48≤(d1+d3+d5+d7+d10+d11+d13) / TTL≤0.61. Furthermore, 0.486≤(d1+d3+d5+d7+d10+d11+d13) / TTL≤0.603. In this way, the center thicknesses of the first to seventh lenses can be controlled within a reasonable range, which is conducive to providing a more flexible curvature combination to adjust the refraction path of light, reduce aberration accumulation, and make imaging clearer and more uniform.

[0162] In an exemplary embodiment, the focal power φ1 of the first lens, the focal power φ2 of the second lens, and the focal power φ of the optical lens satisfy the following relationship: 0.69 ≤ (|φ1| + |φ2|) / |φ| ≤ 1.22. Preferably, 0.81 ≤ (|φ1| + |φ2|) / |φ| ≤ 1.07. Furthermore, 0.817 ≤ (|φ1| + |φ2|) / |φ| ≤ 1.061. This allows the first and second lenses to dominate the focal power, reducing the number of subsequent lenses or the required focal power, thus shortening the total optical length (TTL) and making the lens structure more compact.

[0163] In an exemplary embodiment, the sag height SAG14 of the second side of the seventh lens and the clear aperture D14 corresponding to the second side of the seventh lens and the maximum field of view angle of the optical lens satisfy the following conditions: -0.19≤SAG14 / D14≤-0.01. Preferably, -0.17≤SAG14 / D14≤-0.01. Furthermore, -0.167≤SAG14 / D14≤-0.015. By limiting the conditional expression to within this range and combining it with the aspheric design of the seventh lens, the surface parameters can be precisely constrained, the ability to correct aberrations (such as spherical aberration and coma) is enhanced, and the light propagation path and image plane energy distribution are optimized.

[0164] In an exemplary embodiment, the center-to-center distance d4 between the second and third lenses and the total optical length TTL of the optical lens satisfy the following relationship: 0.002 ≤ d4 / TTL ≤ 0.098. Preferably, 0.003 ≤ d4 / TTL ≤ 0.085. Furthermore, 0.003 ≤ d4 / TTL ≤ 0.084. This allows the gap between the second and third lenses to be controlled within a reasonable range, allowing light of all wavelengths to be better focused on the imaging focal plane, reducing aberrations caused by light dispersion and improving image clarity and color reproduction.

[0165] In an exemplary embodiment, the focal length F2 of the second lens element and the focal length F of the optical lens element satisfy the following relationship: -6.2 ≤ F2 / F ≤ -1.3. Preferably, -6.02 ≤ F2 / F ≤ -1.5. Furthermore, -5.232 ≤ F2 / F ≤ -1.765. This constrains the relationship between the focal length of the second lens element and the focal length of the optical lens element, achieving a reasonable distribution of optical power, effective correction of aberrations, and optimized system performance.

[0166] In an exemplary embodiment, the radius of curvature R7 of the first side surface of the fourth lens, the center thickness d7 of the fourth lens, and the radius of curvature R8 of the second side surface of the fourth lens satisfy: -4.67≤R7 / (d7+R8)≤10.44. Preferably, -4.07≤R7 / (d7+R8)≤9.09. Further, -4.063≤R7 / (d7+R8)≤9.079. In this way, the radius of curvature of the first side surface of the fourth lens, the radius of curvature of the second side surface of the fourth lens, and the center thickness of the fourth lens can be controlled within a reasonable range, ensuring that the fourth lens can work in coordination with the front and rear side lenses, optimize the light propagation path, and make the light rays of each field of view more accurately converge on the imaging focal plane, thereby improving the overall optical performance.

[0167] In an exemplary embodiment, the center distance d6 between the third lens and the fourth lens and the center thickness d7 of the fourth lens satisfy: 0.01≤d6 / d7≤0.39. Preferably, 0.015≤d6 / d7≤0.35. Further, 0.018≤d6 / d7≤0.341. This ensures that d6 and d7 can cooperate with each other, on the one hand preventing d6 from being too small relative to d7, resulting in deterioration of optical performance (such as aberration correction), and on the other hand preventing d6 from being too large relative to d7, thereby destroying the compactness of the system. By rationally planning the center distance between the third lens and the fourth lens and the center thickness of the fourth lens, the propagation path of light between the third lens and the fourth lens can be optimized in a miniaturized framework to achieve functions such as aberration correction, thereby avoiding sacrificing optical performance due to the simple pursuit of small size.

[0168] In an exemplary embodiment, the center distance d6 between the third lens and the fourth lens and the focal length F of the optical lens satisfy: 0.02≤d6 / F≤0.43. Preferably, 0.02≤d6 / F≤0.38. Further, 0.021≤d6 / F≤0.372. This ensures that the propagation path of light between the third lens and the fourth lens is neither too compact nor too loose, providing a suitable space for aberration correction. Within the d6 range defined by the relationship 0.02≤d6 / F≤0.43, the light can be refracted by the third lens and then incident on the fourth lens at an appropriate angle, so as to facilitate the comprehensive correction of aberrations such as spherical aberration, coma, and astigmatism, so that light from different fields of view converges more evenly on the imaging focal plane, thereby improving the clarity and quality of imaging.

[0169] In an exemplary embodiment, the second side angle arctan(1 / K(S14)) of the seventh lens satisfies: 7≤|arctan(1 / K(S14))|≤54. Preferably, 8≤|arctan(1 / K(S14))|≤47. Further, 8.54≤|arctan(1 / K(S14))|≤46.356. In this way, the incident angle of the light at the second side of the seventh lens can be constrained, and multiple balances of aberration correction capability, edge field light controllability, lens manufacturing feasibility, and system-level aberration coordination can be achieved. By constraining the above-mentioned relationship, the second side angle of the seventh lens can be within a reasonable range, on the one hand, avoiding the angle being too small to cause insufficient correction capability, and on the other hand avoiding the angle being too large to cause aberration deterioration and increased processing risks. In addition, by constraining the second side angle of the seventh lens, it can also ensure the effective propagation of edge field light, thereby improving the imaging uniformity, reliability and engineering practicality of the optical system.

[0170] In an exemplary embodiment, the focal length F4 of the fourth lens element and the focal length F of the optical lens satisfy the following relationship: 1.88 ≤ F4 / F ≤ 4.96. Preferably, 2.21 ≤ F4 / F ≤ 4.32. Furthermore, 2.218 ≤ F4 / F ≤ 4.311. This ensures that the focal length of the fourth lens element maintains a reasonable proportion within the focal length of the optical lens element, allowing the fourth lens element to provide a stable and appropriate aberration correction effect. This ensures that the aberration correction effect is neither significantly altered due to an excessively small F4, resulting in an unbalanced aberration correction, nor is it weakened due to an excessively large F4.

[0171] In an exemplary embodiment, the focal length F3 of the third lens element and the focal length F of the optical lens satisfy the following relationship: 1.63 ≤ F3 / F ≤ 5.55. Preferably, 1.93 ≤ F3 / F ≤ 4.82. Furthermore, 1.931 ≤ F3 / F ≤ 4.819. This ensures that the focal length of the third lens element maintains a reasonable proportion within the focal length of the optical lens element, enabling the third lens element to provide a stable and appropriate aberration correction effect. This ensures that the third lens element does not excessively alter the light path, leading to unbalanced aberration correction, due to an excessively small F3, nor does it provide a weak aberration correction effect due to an excessively large F3.

[0172] In an exemplary embodiment, the center distance d12 between the sixth lens and the seventh lens and the total optical length TTL of the optical lens satisfy: 0.05≤d12 / TTL≤0.11. Furthermore, 0.007≤d12 / TTL≤0.096. The rear group of lenses (especially the last two lenses) usually plays a key role in correcting residual aberrations. If d12 is too small, the sixth lens and the seventh lens are too close, which may cause the refraction angle of light to be too large, exacerbating spherical aberration or coma. If d12 is too large, the propagation path of light between the sixth lens and the seventh lens is too long, which may introduce additional aberrations (such as field curvature and distortion), resulting in poor optical performance.

[0173] In an exemplary embodiment, the center distance d2 between the first lens and the second lens and the focal length F1 of the first lens satisfy: 0.25≤|d2 / F1|≤0.82. Further, 0.346≤|d2 / F1|≤0.641. This ensures that the front group of the lens has sufficient divergence ability for light, so that the light is incident on the subsequent lens group at a larger angle, laying the foundation for a long back focus. The negative optical power lens produces positive spherical aberration (the marginal light is more divergent than the paraxial light). By limiting the distance between the first lens with negative optical power and the second lens with negative optical power to a reasonable range, the light at the edge of the first lens can be incident on the second lens at a larger angle. The second lens partially offsets the positive spherical aberration of the first lens through a larger incident height to reduce the overall spherical aberration of the front group.

[0174] In an exemplary embodiment, the center distance d6 between the third lens and the fourth lens, the focal length F3 of the third lens, and the focal length F4 of the fourth lens satisfy: 0<d6 / (F3+F4)≤0.1. Preferably, 0.002≤d6 / (F3+F4)≤0.08. Further, 0.003≤d6 / (F3+F4)≤0.071. In this way, the center distance between the third lens and the fourth lens can be appropriately increased to adjust the incident height of the light on the fourth lens. In combination with the front and rear lenses with negative optical power (such as the second lens with negative optical power and the fifth lens with negative optical power), it is possible to balance the off-axis coma and field curvature and improve the edge field imaging quality.

[0175] In an exemplary embodiment, the Abbe number Vd2 of the second lens element satisfies the Abbe number Vd1 of the first lens element: Vd2 > 1.8Vd1. The first two lenses (the first and second lenses) are both negative-power lenses, which enhances the system's initial divergence of light. The significantly higher Abbe number of the second lens element eliminates the dispersion introduced by the first lens element, providing a low-dispersion substrate for subsequent positive lens elements (such as the third and fourth lenses) and facilitating compensation for residual chromatic aberration.

[0176] In an exemplary embodiment, the focal length F7 of the seventh lens element and the optical back focus BFL of the optical lens satisfy the following relationship: 0.17 ≤ BFL / F7 ≤ 0.67. This balance between aberration correction and structural compatibility is achieved. Controlling BFL / F7 within this range weakens the seventh lens element's ability to deflect light, reducing coma and allowing light to smoothly reach the imaging surface, thereby minimizing distortion and improving image quality.

[0177] The optical lens according to the above-mentioned embodiment of the present application can adopt multiple lenses, such as the seven lenses mentioned above. By rationally allocating the optical parameters of each lens, the optical lens is achieved with small aperture, miniaturization, high resolution, low sensitivity, large angular resolution, large field of view, back focal length, small distortion, small main light angle, high illumination and processability, and can be well matched with, for example, automotive chips without producing vignetting. The optical lens has excellent temperature performance, with little change in imaging effect at high and low temperatures and stable image quality. Therefore, the optical lens according to the above-mentioned embodiment of the present application can better meet the requirements of, for example, automotive applications.

[0178] Those skilled in the art should understand that the total optical length TTL of the optical lens used above refers to the on-axis distance from the first side surface of the first lens to the imaging plane or the image source plane; the back focal length BFL of the optical lens refers to the on-axis distance from the second side surface of the seventh lens to the imaging plane or the image source plane; and D is the clear aperture corresponding to the maximum field of view angle of the optical lens.

[0179] However, those skilled in the art will appreciate that the number of lenses comprising the optical lens may be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe an optical lens comprising seven lenses as an example, the optical lens is not limited to seven lenses. If desired, the optical lens may also include other numbers of lenses.

[0180] Specific embodiments of the optical lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings, wherein the units of the curvature radius and thickness / distance are all mm.

[0181] Example 1

[0182] The following reference Figure 1 The optical lens according to Example 1 of the present application is described.

[0183] like Figure 1 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0184] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0185] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0186] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0187] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0188] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0189] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0190] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0191] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0192] Table 1 shows the basic parameters of the optical lens of Example 1.

[0193] Table 1

[0194] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 16.723 1.2 1.83 42.73 S2 4.836 4.918 S3 -9.681 0.7 1.50 81.61 S4 10.737 1.559 S5 16.139 3.795 1.90 31.31 S6 -37.649 0.806 S7 9.892 4.971 1.57 71.30 S8 -17.147 0.1 STO Infinity 0.1 S10 9.569 2.076 1.59 68.34 S11 -7.687 0.7 1.85 23.78 S12 36.99 3.079 S13 15.421 2.618 1.59 61.15 S14 -111.765 0.228 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.002 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0195] In Example 1, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. The surface shape of each aspherical surface can be defined by, but not limited to, the following aspherical surface formula:

[0196]

[0197] Where x is the distance vector from the vertex of the aspheric surface 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 radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient for the i-th order of the aspheric surface. Table 2 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 that can be used for each of the aspheric surfaces S13 and S14 in Example 1.

[0198] Table 2

[0199]

[0200] from Figure 2 From the above, it can be seen that the optical lens provided in Example 1 has better imaging quality.

[0201] Example 2

[0202] The following reference Figure 3 Describe the optical lens according to Example 2 of the present application.

[0203] like Figure 3As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0204] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0205] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0206] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0207] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0208] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0209] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0210] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0211] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0212] Table 3 shows the basic parameters of the optical lens of Example 2.

[0213] Table 3

[0214] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 16.722 1.2 1.83 42.73 S2 4.836 4.918 S3 -9.683 0.7 1.50 81.61 S4 10.733 1.56 S5 16.137 3.795 1.90 31.31 S6 -37.645 0.804 S7 9.893 4.971 1.57 71.30 S8 -17.137 0.1 STO Infinity 0.1 S10 9.573 2.076 1.59 68.34 S11 -7.684 0.7 1.85 23.78 S12 37.02 3.08 S13 15.423 2.618 1.59 61.15 S14 -111.153 0.228 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.002 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0215] In Example 2, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 4 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 2.

[0216] Table 4

[0217]

[0218] from Figure 4 From the above, it can be seen that the optical lens provided in Example 2 has better imaging quality.

[0219] Example 3

[0220] The following reference Figure 5 Describe the optical lens according to Example 3 of the present application.

[0221] like Figure 5 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0222] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0223] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is convex.

[0224] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0225] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0226] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0227] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0228] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0229] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0230] Table 5 shows the basic parameters of the optical lens of Example 3.

[0231] Table 5

[0232] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 22 1.2 1.83 42.73 S2 4.763 4.799 S3 -7.814 3.119 1.50 81.61 S4 -30 0.23 S5 93.68 4.333 1.90 31.31 S6 -22.775 0.1 S7 8.251 5.056 1.57 71.30 S8 -32.002 0.1 STO Infinity 0.643 S10 7.945 2.09 1.59 68.34 S11 -8.989 0.7 1.85 23.78 S12 15.344 1.703 S13 20.838 2.459 1.59 61.15 S14 -42.728 0.319 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0233] In Example 3, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 6 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 3.

[0234] Table 6

[0235]

[0236] from Figure 6 From the above, it can be seen that the optical lens provided in Example 3 has better imaging quality.

[0237] Example 4

[0238] The following reference Figure 7 Describe the optical lens according to Example 4 of the present application.

[0239] like Figure 7 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0240] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0241] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is convex.

[0242] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0243] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0244] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0245] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0246] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0247] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0248] Table 7 shows the basic parameters of the optical lens of Example 4.

[0249] Table 7

[0250] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 22 1.2 1.83 42.73 S2 4.769 4.745 S3 -8.271 4.453 1.50 81.61 S4 -30 0.097 S5 47.537 3.35 1.90 31.31 S6 -35.006 0.1 S7 7.992 5.062 1.57 71.30 S8 -40.009 0.1 STO Infinity 0.747 S10 7.553 2.155 1.59 68.34 S11 -8.41 0.7 1.85 23.78 S12 16.405 1.395 S13 23.68 2.37 1.59 61.15 S14 -51.55 0.377 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.003 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0251] In Example 4, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 8 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 4.

[0252] Table 8

[0253]

[0254] from Figure 8 From the above, it can be seen that the optical lens provided in Example 4 has better imaging quality.

[0255] Example 5

[0256] The following reference Figure 9 Describe the optical lens according to Example 5 of the present application.

[0257] like Figure 9 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0258] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0259] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0260] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is convex, and a second side surface S6 of the third lens L3 is concave.

[0261] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0262] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0263] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0264] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0265] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0266] Table 9 shows the basic parameters of the optical lens of Example 5.

[0267] Table 9

[0268] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 12.578 1.2 1.83 42.73 S2 4.675 4.99 S3 -11.083 0.7 1.50 81.61 S4 8.017 1.863 S5 12.052 3.454 1.90 31.31 S6 50 0.1 S7 11.564 4.756 1.57 71.30 S8 -15.384 0.1 STO Infinity 0.1 S10 7.93 3.863 1.59 68.34 S11 -6.464 0.7 1.85 23.78 S12 -393.367 2.16 S13 15.362 2.485 1.59 61.15 S14 -342.827 0.38 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.003 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0269] In Example 5, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 10 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 5.

[0270] Table 10

[0271]

[0272] from Figure 10 From the above, it can be seen that the optical lens provided in Example 5 has better imaging quality.

[0273] Example 6

[0274] The following reference Figure 11 Describe the optical lens according to Example 6 of the present application.

[0275] like Figure 11 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0276] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0277] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0278] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is convex, and a second side surface S6 of the third lens L3 is concave.

[0279] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0280] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0281] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0282] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0283] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0284] Table 11 shows the basic parameters of the optical lens of Example 6.

[0285] Table 11

[0286] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 12.437 1.2 1.83 42.73 S2 4.687 5.013 S3 -10.831 0.7 1.50 81.61 S4 7.702 1.776 S5 12.133 3.437 1.90 31.31 S6 50 0.1 S7 11.397 4.805 1.57 71.30 S8 -14.435 0.1 STO Infinity 0.1 S10 7.958 3.927 1.59 68.34 S11 -6.399 0.7 1.85 23.78 S12 -173.54 2.199 S13 18.414 2.481 1.59 61.15 S14 -99.49 0.313 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.002 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0287] In Example 6, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 12 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 6.

[0288] Table 12

[0289]

[0290] from Figure 12 From the above, it can be seen that the optical lens provided in Example 6 has better imaging quality.

[0291] Example 7

[0292] The following reference Figure 13 Describe the optical lens according to Example 7 of the present application.

[0293] like Figure 13 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0294] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0295] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is convex.

[0296] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is concave, and a second side surface S6 of the third lens L3 is convex.

[0297] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0298] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0299] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0300] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0301] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0302] Table 13 shows the basic parameters of the optical lens of Example 7.

[0303] Table 13

[0304] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 22 1.2 1.83 42.73 S2 4.804 4.854 S3 -7.172 0.7 1.50 81.61 S4 -32.443 0.604 S5 -50 5 1.90 31.31 S6 -14.286 0.1 S7 8.93 5.5 1.57 71.30 S8 -26.922 0.1 STO Infinity 0.677 S10 8.1 2.496 1.59 68.34 S11 -9.392 0.7 1.85 23.78 S12 15.322 2.023 S13 15.789 2.668 1.59 61.15 S14 -29.216 0.229 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0305] In Example 7, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 14 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 7.

[0306] Table 14

[0307]

[0308] from Figure 14 From the above, it can be seen that the optical lens provided in Example 7 has better imaging quality.

[0309] Example 8

[0310] The following reference Figure 15 Describe the optical lens according to Example 8 of the present application.

[0311] like Figure 15 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0312] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0313] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is convex.

[0314] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is concave, and a second side surface S6 of the third lens L3 is convex.

[0315] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0316] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0317] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0318] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0319] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0320] Table 15 shows the basic parameters of the optical lens of Example 8.

[0321] Table 15

[0322] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 22 1.2 1.83 42.73 S2 4.809 4.869 S3 -7.177 0.7 1.50 81.61 S4 -32.278 0.602 S5 -50 5 1.90 31.31 S6 -14.286 0.109 S7 8.917 5.5 1.57 71.30 S8 -27.135 0.1 STO Infinity 0.691 S10 8.065 2.46 1.59 68.34 S11 -9.464 0.7 1.85 23.78 S12 15.224 2.021 S13 15.759 2.662 1.59 61.15 S14 -29.784 0.236 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0323] In Example 8, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 16 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 8.

[0324] Table 16

[0325]

[0326] from Figure 16 From the above, it can be seen that the optical lens provided in Example 8 has better imaging quality.

[0327] Example 9

[0328] The following reference Figure 17 Describe the optical lens according to Example 9 of the present application.

[0329] like Figure 17 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0330] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0331] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0332] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0333] The fourth lens L4 has positive refractive power, a first side surface S7 of the fourth lens L4 is convex, and a second side surface S8 of the fourth lens L4 is concave.

[0334] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0335] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0336] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0337] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0338] Table 17 shows the basic parameters of the optical lens of Example 9.

[0339] Table 17

[0340] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 17.389 1.2 1.83 42.73 S2 4.888 4.857 S3 -10.015 0.7 1.50 81.61 S4 22.955 2.556 S5 56.001 3.375 1.90 31.31 S6 -28.482 0.205 S7 7.012 5.07 1.57 71.30 S8 50 0.202 STO Infinity 1.032 S10 6.659 2.363 1.59 68.34 S11 -7.044 0.7 1.85 23.78 S12 36.164 0.994 S13 54.769 2.401 1.59 61.15 S14 -21.527 0.71 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.488 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0341] In Example 9, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 18 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 9.

[0342] Table 18

[0343]

[0344] from Figure 18 From the above, it can be seen that the optical lens provided in Example 9 has better imaging quality.

[0345] Example 10

[0346] The following reference Figure 19 The optical lens according to Example 10 of the present application is described.

[0347] like Figure 19 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0348] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0349] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0350] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0351] The fourth lens L4 has positive refractive power, a first side surface S7 of the fourth lens L4 is convex, and a second side surface S8 of the fourth lens L4 is concave.

[0352] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0353] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0354] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0355] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0356] Table 19 shows the basic parameters of the optical lens of Example 10.

[0357] Table 19

[0358] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 17.651 1.2 1.83 42.73 S2 4.9 4.892 S3 -9.695 0.7 1.50 81.61 S4 31.301 2.691 S5 79.619 3.363 1.90 31.31 S6 -26.051 0.1 S7 7.037 5.086 1.57 71.30 S8 50 0.202 STO Infinity 1.022 S10 6.636 2.368 1.59 68.34 S11 -7.142 0.7 1.85 23.78 S12 29.949 1.004 S13 48.307 2.407 1.59 61.15 S14 -21.695 0.67 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.448 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0359] In Example 10, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 204 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of each aspherical surface S13 and S14 that can be used in Example 10.

[0360] Table 20

[0361]

[0362] from Figure 20 From the above, it can be seen that the optical lens provided in Example 10 has better imaging quality.

[0363] Example 11

[0364] The following reference Figure 21 Describe the optical lens according to Example 11 of the present application.

[0365] like Figure 21 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0366] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0367] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0368] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is convex, and a second side surface S6 of the third lens L3 is concave.

[0369] The fourth lens L4 has positive refractive power, a first side surface S7 of the fourth lens L4 is concave, and a second side surface S8 of the fourth lens L4 is convex.

[0370] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0371] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0372] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0373] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0374] Table 21 shows the basic parameter table of the optical lens of Example 11.

[0375] Table 21

[0376] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 13.019 1.2 1.83 42.73 S2 4.675 4.85 S3 -12.236 0.7 1.50 81.61 S4 7.717 0.983 S5 9.876 3.69 1.90 31.31 S6 186.585 0.288 S7 -50 4.108 1.57 71.30 S8 -9.621 0.1 STO Infinity 0.1 S10 6.805 4.101 1.59 68.34 S11 -7.923 0.7 1.85 23.78 S12 36.336 2.894 S13 9.482 3.084 1.59 61.15 S14 -75.33 0.053 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0377] In Example 11, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 22 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 11.

[0378] Table 22

[0379]

[0380] from Figure 22 From the above, it can be seen that the optical lens provided in Example 11 has better imaging quality.

[0381] Example 12

[0382] The following reference Figure 23 Describe the optical lens according to Example 12 of the present application.

[0383] like Figure 23 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0384] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0385] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0386] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is convex, and a second side surface S6 of the third lens L3 is concave.

[0387] The fourth lens L4 has positive refractive power, a first side surface S7 of the fourth lens L4 is concave, and a second side surface S8 of the fourth lens L4 is convex.

[0388] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0389] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0390] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0391] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0392] Table 23 shows the basic parameter table of the optical lens of Example 12.

[0393] Table 23

[0394] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 13.021 1.2 1.83 42.73 S2 4.675 4.849 S3 -12.229 0.7 1.50 81.61 S4 7.712 0.981 S5 9.87 3.69 1.90 31.31 S6 186.019 0.288 S7 -50 4.108 1.57 71.30 S8 -9.615 0.1 STO Infinity 0.1 S10 6.804 4.101 1.59 68.34 S11 -7.923 0.7 1.85 23.78 S12 36.369 2.897 S13 9.489 3.085 1.59 61.15 S14 -74.887 0.051 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0395] In Example 12, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 24 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 12.

[0396] Table 24

[0397]

[0398] from Figure 24 From the above, it can be seen that the optical lens provided in Example 12 has better imaging quality.

[0399] Example 13

[0400] The following reference Figure 25 Describe the optical lens according to Example 13 of the present application.

[0401] like Figure 25 As shown, the optical lens includes, from the first side to the second side of the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens.

[0402] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0403] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0404] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0405] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0406] The fifth lens L5 has positive refractive power. A first side surface S10 of the fifth lens L5 is concave, and a second side surface S11 of the fifth lens L5 is convex.

[0407] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0408] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0409] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0410] Table 25 shows the basic parameter table of the optical lens of Example 13.

[0411] Table 25

[0412] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 14.855 1.2 1.83 42.73 S2 4.801 4.662 S3 -14.124 0.7 1.50 81.61 S4 8.293 1.653 S5 69.665 3.389 1.90 31.31 S6 -21.387 0.1 S7 7.563 5.213 1.57 71.30 S8 -20.176 0.1 STO Infinity 2.099 S10 -50 1.913 1.59 68.34 S11 -4.209 0.7 1.85 23.78 S12 -10.124 0.504 S13 14.261 2.489 1.59 61.15 S14 -234.058 1.363 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.767 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0413] In Example 13, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 26 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 of the aspherical surfaces S13 and S14 that can be used in Example 13.

[0414] Table 26

[0415]

[0416] from Figure 26 From the above, it can be seen that the optical lens provided in Example 13 has better imaging quality.

[0417] Example 14

[0418] The following reference Figure 27 Describe the optical lens according to Example 14 of the present application.

[0419] like Figure 27 As shown, the optical lens includes, from the first side to the second side of the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens.

[0420] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0421] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0422] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0423] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0424] The fifth lens L5 has positive refractive power. A first side surface S10 of the fifth lens L5 is concave, and a second side surface S11 of the fifth lens L5 is convex.

[0425] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0426] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0427] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0428] Table 27 shows the basic parameter table of the optical lens of Example 14.

[0429] Table 27

[0430] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 14.84 1.2 1.83 42.73 S2 4.8 4.664 S3 -14.109 0.7 1.50 81.61 S4 8.299 1.653 S5 69.99 3.39 1.90 31.31 S6 -21.351 0.1 S7 7.564 5.214 1.57 71.30 S8 -20.134 0.1 STO Infinity 2.095 S10 -50 1.913 1.59 68.34 S11 -4.211 0.7 1.85 23.78 S12 -10.135 0.512 S13 14.26 2.488 1.59 61.15 S14 -234.029 1.36 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.764 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0431] In Example 14, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 28 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 14.

[0432] Table 28

[0433]

[0434] from Figure 28 From the above, it can be seen that the optical lens provided in Example 14 has better imaging quality.

[0435] Example 15

[0436] The following reference Figure 29 Describe the optical lens according to Example 15 of the present application.

[0437] like Figure 29 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0438] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0439] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0440] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0441] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0442] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0443] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0444] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0445] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0446] Table 29 shows the basic parameter table of the optical lens of Example 15.

[0447] Table 29

[0448] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 15.065 1.2 1.83 42.73 S2 4.689 4.783 S3 -9.584 0.7 1.50 81.61 S4 9.406 1.555 S5 21.248 3.478 1.90 31.31 S6 -43.367 0.1 S7 9.133 5.064 1.57 71.30 S8 -17.43 0.1 STO Infinity 1.261 S10 9.595 2.472 1.59 68.34 S11 -6.177 0.7 1.85 23.78 S12 -50 2.809 S13 41.577 2.451 1.59 61.15 S14 -42.359 0.176 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0449] In Example 15, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 30 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 15.

[0450] Table 30

[0451]

[0452] from Figure 30 From the above, it can be seen that the optical lens provided in Example 15 has better imaging quality.

[0453] Example 16

[0454] The following reference Figure 31 Describe the optical lens according to Example 16 of the present application.

[0455] like Figure 31 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0456] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0457] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0458] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0459] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0460] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0461] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0462] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0463] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0464] Table 31 shows the basic parameter table of the optical lens of Example 16.

[0465] Table 31

[0466] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 14.797 1.2 1.83 42.73 S2 4.697 4.806 S3 -9.703 0.7 1.50 81.61 S4 9.123 1.588 S5 20.417 3.474 1.90 31.31 S6 -48.16 0.1 S7 9.131 5.07 1.57 71.30 S8 -17.178 0.1 STO Infinity 1.134 S10 9.557 2.61 1.59 68.34 S11 -6.124 0.7 1.85 23.78 S12 -50 2.755 S13 43.671 2.454 1.59 61.15 S14 -40.582 0.16 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0467] In Example 16, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 32 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 16.

[0468] Table 32

[0469]

[0470] from Figure 32 From the above, it can be seen that the optical lens provided in Example 16 has better imaging quality.

[0471] Example 17

[0472] The following reference Figure 33 Describe the optical lens according to Example 17 of the present application.

[0473] like Figure 33 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0474] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0475] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0476] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0477] The fourth lens L4 has positive refractive power, a first side surface S7 of the fourth lens L4 is convex, and a second side surface S8 of the fourth lens L4 is concave.

[0478] The fifth lens L5 has negative refractive power. A first side surface S10 of the fifth lens L5 is concave, and a second side surface S11 of the fifth lens L5 is concave.

[0479] The sixth lens L6 has positive refractive power. A first side surface S11 of the sixth lens L6 is a convex surface, and a second side surface S12 of the sixth lens L6 is a convex surface.

[0480] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0481] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0482] Table 33 shows the basic parameter table of the optical lens of Example 17.

[0483] Table 33

[0484] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 17.687 1.2 1.83 42.73 S2 4.913 3.863 S3 -12.603 0.7 1.50 81.61 S4 8.625 2.092 S5 12.99 4.061 1.90 31.31 S6 -18.772 0.1 S7 10.05 4.375 1.57 71.30 S8 263.708 0.114 STO Infinity 0.389 S10 -12.245 0.7 1.85 23.78 S11 7.416 2.172 1.59 68.34 S12 -7.434 0.262 S13 80.053 3.319 1.59 61.15 S14 -9.001 1.866 S15 Infinity 0.5 1.52 64.20 S16 Infinity 5.639 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0485] In Example 17, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 34 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 17.

[0486] Table 34

[0487]

[0488] from Figure 34 From the above, it can be seen that the optical lens provided in Example 17 has better imaging quality.

[0489] Example 18

[0490] The following reference Figure 35Describe the optical lens according to Example 18 of the present application.

[0491] like Figure 35 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0492] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0493] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0494] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0495] The fourth lens L4 has positive refractive power, a first side surface S7 of the fourth lens L4 is convex, and a second side surface S8 of the fourth lens L4 is concave.

[0496] The fifth lens L5 has negative refractive power. A first side surface S10 of the fifth lens L5 is concave, and a second side surface S11 of the fifth lens L5 is concave.

[0497] The sixth lens L6 has positive refractive power. A first side surface S11 of the sixth lens L6 is a convex surface, and a second side surface S12 of the sixth lens L6 is a convex surface.

[0498] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0499] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0500] Table 35 shows the basic parameter table of the optical lens of Example 18.

[0501] Table 35

[0502] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 18.151 1.2 1.83 42.73 S2 4.962 3.821 S3 -13.109 0.7 1.50 81.61 S4 8.61 2.139 S5 12.907 4.067 1.90 31.31 S6 -19.085 0.1 S7 10.008 4.354 1.57 71.30 S8 94.194 0.138 STO Infinity 0.387 S10 -12.111 0.7 1.85 23.78 S11 7.378 2.16 1.59 68.34 S12 -7.518 0.244 S13 55.515 3.293 1.59 61.15 S14 -8.904 1.888 S15 Infinity 0.5 1.52 64.20 S16 Infinity 5.66 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0503] In Example 18, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 36 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 18.

[0504] Table 36

[0505]

[0506] from Figure 36 From the above, it can be seen that the optical lens provided in Example 18 has better imaging quality.

[0507] Example 19

[0508] The following reference Figure 37 Describe the optical lens according to Example 19 of the present application.

[0509] like Figure 37 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0510] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0511] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0512] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0513] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0514] The fifth lens L5 has negative refractive power. A first side surface S10 of the fifth lens L5 is concave, and a second side surface S11 of the fifth lens L5 is convex.

[0515] The sixth lens L6 has positive refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0516] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0517] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0518] Table 37 shows the basic parameter table of the optical lens of Example 19.

[0519] Table 37

[0520] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 13.876 1.2 1.83 42.73 S2 5.357 3.853 S3 -10.541 0.7 1.50 81.61 S4 6.854 1.341 S5 16.011 3.745 1.90 31.31 S6 -19.57 1.005 S7 16.094 4.647 1.57 71.30 S8 -8.61 0.1 STO Infinity 0.799 S10 -5.932 0.7 1.85 23.78 S11 -50 1.776 1.59 68.34 S12 -5.758 0.233 S13 125.39 2.884 1.59 61.15 S14 -10.439 2.047 S15 Infinity 0.5 1.52 64.20 S16 Infinity 5.816 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0521] In Example 19, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 38 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14, and A16 of the aspherical surfaces S13 and S14 that can be used in Example 19.

[0522] Table 38

[0523]

[0524] from Figure 38 From the above, it can be seen that the optical lens provided in Example 19 has better imaging quality.

[0525] Example 20

[0526] The following reference Figure 39 Describe the optical lens according to Example 20 of the present application.

[0527] like Figure 39 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. The first side surface S13 of the seventh lens L7 has at least one inflection point.

[0528] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0529] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0530] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0531] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0532] The fifth lens L5 has negative refractive power. A first side surface S10 of the fifth lens L5 is concave, and a second side surface S11 of the fifth lens L5 is convex.

[0533] The sixth lens L6 has positive refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is convex.

[0534] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0535] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0536] Table 39 shows the basic parameter table of the optical lens of Example 20.

[0537] Table 39

[0538] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 13.866 1.2 1.83 42.73 S2 5.357 3.853 S3 -10.544 0.7 1.50 81.61 S4 6.851 1.342 S5 16.015 3.744 1.90 31.31 S6 -19.576 1.004 S7 16.103 4.647 1.57 71.30 S8 -8.61 0.1 STO Infinity 0.801 S10 -5.933 0.7 1.85 23.78 S11 -50 1.776 1.59 68.34 S12 -5.758 0.233 S13 123.594 2.885 1.59 61.15 S14 -10.446 2.047 S15 Infinity 0.5 1.52 64.20 S16 Infinity 5.815 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0539] In Example 20, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 40 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 20.

[0540] Table 40

[0541]

[0542] from Figure 40 From the above, it can be seen that the optical lens provided in Example 20 has better imaging quality.

[0543] Example 21

[0544] The following reference Figure 41 Describe the optical lens according to Example 21 of the present application.

[0545] like Figure 41 As shown, the optical lens includes, from the first side to the second side of the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens.

[0546] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0547] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0548] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0549] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0550] The fifth lens L5 has negative refractive power. A first side surface S10 of the fifth lens L5 is convex, and a second side surface S11 of the fifth lens L5 is concave.

[0551] The sixth lens L6 has positive refractive power. A first side surface S11 of the sixth lens L6 is convex, and a second side surface S12 of the sixth lens L6 is concave.

[0552] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0553] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0554] Table 41 shows the basic parameter table of the optical lens of Example 21.

[0555] Table 41

[0556] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 13.868 1.328 1.83 42.73 S2 4.797 4.543 S3 -8.043 0.7 1.50 81.61 S4 12.222 1.639 S5 33.347 4.185 1.90 31.31 S6 -16.926 0.966 S7 8.341 4.717 1.57 71.30 S8 -446.477 0.1 STO Infinity 0.1 S10 8.516 0.7 1.85 23.78 S11 3.801 2.303 1.59 68.34 S12 50 2.635 S13 19.03 2.73 1.59 61.15 S14 -38.278 0.205 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0557] In Example 21, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 42 shows the conic coefficient k and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 21.

[0558] Table 42

[0559]

[0560] from Figure 42 From the above, it can be seen that the optical lens provided in Example 21 has better imaging quality.

[0561] Example 22

[0562] The following reference Figure 43 Describe the optical lens according to Example 22 of the present application.

[0563] like Figure 43 As shown, the optical lens includes, from the first side to the second side of the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens.

[0564] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0565] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0566] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0567] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0568] The fifth lens L5 has negative refractive power. A first side surface S10 of the fifth lens L5 is convex, and a second side surface S11 of the fifth lens L5 is concave.

[0569] The sixth lens L6 has positive refractive power. A first side surface S11 of the sixth lens L6 is convex, and a second side surface S12 of the sixth lens L6 is concave.

[0570] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is a convex surface, and a second side surface S14 of the seventh lens L7 is a convex surface.

[0571] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0572] Table 43 shows the basic parameter table of the optical lens of Example 22.

[0573] Table 43

[0574] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 13.542 1.426 1.83 42.73 S2 4.741 4.556 S3 -8.001 0.7 1.50 81.61 S4 12.279 1.633 S5 33.137 4.271 1.90 31.31 S6 -16.991 0.803 S7 8.354 4.724 1.57 71.30 S8 -246.977 0.1 STO Infinity 0.1 S10 8.522 0.7 1.85 23.78 S11 3.787 2.3 1.59 68.34 S12 50 2.626 S13 19.965 2.747 1.59 61.15 S14 -34.341 0.163 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.005 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0575] In Example 22, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 44 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 22.

[0576] Table 44

[0577]

[0578] from Figure 44 From the above, it can be seen that the optical lens provided in Example 22 has better imaging quality.

[0579] Example 23

[0580] The following reference Figure 45Describe the optical lens according to Example 23 of the present application.

[0581] like Figure 45 As shown, the optical lens includes, from the first side to the second side of the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens.

[0582] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0583] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0584] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0585] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0586] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0587] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0588] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is concave, and a second side surface S14 of the seventh lens L7 is convex.

[0589] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0590] Table 45 shows the basic parameter table of the optical lens of Example 23.

[0591] Table 45

[0592] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 19.77 1.209 1.83 42.73 S2 4.894 4.727 S3 -9.798 0.7 1.50 81.61 S4 9.962 1.034 S5 14.372 3.734 1.90 31.31 S6 -64.979 1.659 S7 8.292 5.131 1.57 71.30 S8 -21.92 0.1 STO Infinity 0.1 S10 7.895 2.185 1.59 68.34 S11 -8.225 0.7 1.85 23.78 S12 41.834 1.893 S13 -50 2.387 1.59 61.15 S14 -14.286 0.718 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.578 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0593] In Example 23, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 46 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 23.

[0594] Table 46

[0595]

[0596] from Figure 46 From the above, it can be seen that the optical lens provided in Example 23 has better imaging quality.

[0597] Example 24

[0598] The following reference Figure 47 Describe the optical lens according to Example 24 of the present application.

[0599] like Figure 47 As shown, the optical lens includes, from the first side to the second side of the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens.

[0600] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0601] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0602] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0603] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0604] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0605] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0606] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is concave, and a second side surface S14 of the seventh lens L7 is convex.

[0607] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0608] Table 47 shows the basic parameter table of the optical lens of Example 24.

[0609] Table 47

[0610] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 19.963 1.2 1.83 42.73 S2 4.892 4.716 S3 -9.846 0.7 1.50 81.61 S4 10.231 1.02 S5 14.557 3.724 1.90 31.31 S6 -64.452 1.746 S7 8.206 5.12 1.57 71.30 S8 -22.936 0.1 STO Infinity 0.1 S10 7.8 2.194 1.59 68.34 S11 -8.343 0.7 1.85 23.78 S12 38.477 1.798 S13 -50 2.377 1.59 61.15 S14 -14.286 0.75 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.608 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0611] In Example 24, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 48 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 24.

[0612] Table 48

[0613]

[0614] from Figure 48 From the above, it can be seen that the optical lens provided in Example 24 has better imaging quality.

[0615] Example 25

[0616] The following reference Figure 49 Describe the optical lens according to Example 25 of the present application.

[0617] like Figure 49 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. Both the first side surface S13 and the second side surface S14 of the seventh lens L7 have at least one inflection point.

[0618] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0619] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0620] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0621] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0622] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0623] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0624] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is convex, and a second side surface S14 of the seventh lens L7 is concave.

[0625] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0626] Table 49 shows the basic parameter table of the optical lens of Example 25.

[0627] Table 49

[0628] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 16.313 1.2 1.83 42.73 S2 4.851 4.899 S3 -10.191 0.7 1.50 81.61 S4 10.911 1.114 S5 16.619 3.568 1.90 31.31 S6 -83.951 1.312 S7 9.2 4.887 1.57 71.30 S8 -23.862 0.1 STO Infinity 1.044 S10 7.156 2.192 1.59 68.34 S11 -9.329 0.7 1.85 23.78 S12 38.012 2.235 S13 13.796 2.315 1.59 61.15 S14 50 0.584 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0629] In Example 25, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 50 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 25.

[0630] Table 50

[0631]

[0632] from Figure 50 From the above, it can be seen that the optical lens provided in Example 25 has better imaging quality.

[0633] Example 26

[0634] The following reference Figure 51 Describe the optical lens according to Example 26 of the present application.

[0635] like Figure 51 As shown, the optical lens includes, from the first side to the second side along the optical axis, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. A stop STO may be disposed between the fourth lens L4 and the fifth lens L5. The fifth lens L5 and the sixth lens L6 are cemented together to form a cemented lens. Both the first side surface S13 and the second side surface S14 of the seventh lens L7 have at least one inflection point.

[0636] The first lens L1 has negative refractive power, a first side surface S1 of the first lens L1 is convex, and a second side surface S2 of the first lens L1 is concave.

[0637] The second lens L2 has negative refractive power, a first side surface S3 of the second lens L2 is concave, and a second side surface S4 of the second lens L2 is concave.

[0638] The third lens L3 has positive refractive power, a first side surface S5 of the third lens L3 is a convex surface, and a second side surface S6 of the third lens L3 is a convex surface.

[0639] The fourth lens L4 has positive refractive power. A first side surface S7 of the fourth lens L4 is a convex surface, and a second side surface S8 of the fourth lens L4 is a convex surface.

[0640] The fifth lens L5 has positive refractive power. The first side surface S10 of the fifth lens L5 is convex, and the second side surface S11 of the fifth lens L5 is convex.

[0641] The sixth lens L6 has negative refractive power. A first side surface S11 of the sixth lens L6 is concave, and a second side surface S12 of the sixth lens L6 is concave.

[0642] The seventh lens L7 has positive refractive power. A first side surface S13 of the seventh lens L7 is convex, and a second side surface S14 of the seventh lens L7 is concave.

[0643] The second side of the optical lens is provided with an image plane IMA. A filter IR and a protective glass CG are disposed between the seventh lens element L7 and the image plane IMA. The filter IR has a first side surface S15 and a second side surface S16, and the protective glass CG has a first side surface S17 and a second side surface S18. When the IMA serves as the imaging plane, light from an object sequentially passes through each surface and is ultimately imaged on the IMA. When the IMA serves as the image source plane, light from the IMA sequentially passes through each surface and is ultimately projected onto the object.

[0644] Table 51 shows the basic parameter table of the optical lens of Example 26.

[0645] Table 51

[0646] Face number Radius of curvature Thickness / distance Refractive index Abbe number S1 17.005 1.2 1.83 42.73 S2 4.851 4.847 S3 -10.126 0.7 1.50 81.61 S4 12.21 1.262 S5 17.862 3.552 1.90 31.31 S6 -61.794 1.206 S7 9.275 4.859 1.57 71.30 S8 -25.229 0.1 STO Infinity 1.041 S10 7.286 2.154 1.59 68.34 S11 -9.41 0.7 1.85 23.78 S12 30.446 2.267 S13 12.249 2.381 1.59 61.15 S14 50 0.581 S15 Infinity 0.5 1.52 64.20 S16 Infinity 4.004 S17 Infinity 0.5 1.52 64.20 S18 Infinity 0.15 IMA / /

[0647] In Example 26, the first side surface S13 and the second side surface S14 of the seventh lens L7 are both aspherical surfaces. Table 52 shows the conic coefficient k and the high-order coefficients A4, A6, A8, A10, A12, A14 and A16 of the aspherical surfaces S13 and S14 that can be used in Example 26.

[0648] Table 52

[0649]

[0650] from Figure 52 From the above, it can be seen that the optical lens provided in Example 26 has better imaging quality.

[0651] Tables 53-1 to 53-5 give the basic parameters of the optical lenses in Examples 1 to 26, such as F, φ, TTL, θ, H, and BFL. The units of the parameters φ, φ1, and φ2 in the table are mm. -1 The unit of parameter θ is rad, the unit of parameter arctan(1 / K(S14)) is degree, and the unit of other parameters is mm. Tables 54-1 to 54-5 give the numerical values ​​of the various relationship equations of the optical lenses in Examples 1 to 26.

[0652] Table 53-1

[0653] E1 E2 E3 E4 E5 E6 F 4.704 4.704 4.714 4.707 4.656 4.659 φ 0.213 0.213 0.212 0.213 0.215 0.215 TTL 32.002 32.002 32.004 32.003 32.003 32.002 θ 2.013 2.013 2.016 2.014 2.001 2.001 H 9.253 9.253 9.253 9.254 9.254 9.254 D 13.948 13.947 13.215 13.288 13.951 13.945 BFL 5.379 5.38 5.473 5.529 5.533 5.465 F1 -8.524 -8.524 -7.505 -7.518 -9.556 -9.673 F2 -10.117 -10.116 -22.275 -24.627 -9.238 -8.935 F3 12.899 12.897 20.582 22.685 16.797 16.948 F4 11.797 11.796 12.062 12.156 12.379 11.987 F5 7.518 7.518 7.447 7.059 6.666 6.654 F6 -7.436 -7.435 -6.584 -6.459 -7.74 -7.834 F7 23.145 23.133 24.087 27.828 24.985 26.544 D2 9.004 9.004 8.621 8.658 8.938 8.955 D3 8.599 8.599 8.327 8.391 8.375 8.364 D14 8.052 8.051 7.311 7.1 7.601 7.609 SAG2 3.071 3.071 2.737 2.768 3.303 3.302 SAG3 -1.007 -1.007 -1.202 -1.143 -0.822 -0.84 SAG14 -0.471 -0.471 -0.384 -0.325 -0.314 -0.382 arctan(1 / K(S14)) -25.991 -25.973 -18.851 -16.226 -18.59 -20.35 φ1 -0.117 -0.117 -0.133 -0.133 -0.105 -0.103 φ2 -0.099 -0.099 -0.045 -0.041 -0.108 -0.112

[0654] Table 53-2

[0655] E7 E8 E9 E10 E11 E12 F 4.72 4.719 4.698 4.701 4.677 4.677 φ 0.212 0.212 0.213 0.213 0.214 0.214 TTL 32.004 32.004 32.003 32.003 32.004 32.004 θ 2.017 2.017 2.009 2.01 2.01 2.01 H 9.254 9.254 9.256 9.256 9.254 9.254 D 13.165 13.179 13.943 13.946 13.937 13.936 BFL 5.383 5.391 6.349 6.268 5.207 5.205 F1 -7.589 -7.598 -8.5 -8.471 -9.33 -9.329 F2 -18.678 -18.721 -13.916 -14.794 -9.402 -9.396 F3 20.693 20.693 21.238 21.994 11.394 11.389 F4 12.463 12.469 13.726 13.781 20.163 20.147 F5 7.739 7.74 6.162 6.191 6.881 6.881 F6 -6.765 -6.78 -6.887 -6.728 -7.599 -7.601 F7 17.764 17.856 26.501 25.703 14.47 14.471 D2 8.631 8.641 9.047 9.055 8.912 8.912 D3 8.299 8.305 8.642 8.654 8.378 8.378 D14 7.666 7.657 6.954 6.956 8.74 8.73 SAG2 2.693 2.698 3.035 3.027 3.262 3.262 SAG3 -1.322 -1.323 -0.98 -1.019 -0.739 -0.74 SAG14 -0.474 -0.466 -0.485 -0.48 -0.644 -0.642 arctan(1 / K(S14)) -21.269 -21.024 -20.379 -20.111 -36.902 -36.776 φ1 -0.132 -0.132 -0.118 -0.118 -0.107 -0.107 φ2 -0.054 -0.053 -0.072 -0.068 -0.106 -0.106

[0656] Table 53-3

[0657] E13 E14 E15 E16 E17 E18 F 4.67 4.669 4.705 4.7 4.672 4.673 φ 0.214 0.214 0.213 0.213 0.214 0.214 TTL 32.002 32.003 32 32 32 32 θ 2.01 2.01 2.008 2.006 2.009 2.009 H 9.254 9.254 9.254 9.252 9.255 9.255 D 14.008 14.008 13.567 19.726 12 12 BFL 7.279 7.274 5.326 5.311 8.655 8.698 F1 -8.968 -8.969 -8.591 -8.697 -8.495 -8.517 F2 -10.394 -10.394 -9.426 -9.335 -10.181 -10.334 F3 18.383 18.378 16.15 16.213 9.021 9.043 F4 10.361 10.358 11.3 11.25 18.223 19.291 F5 7.624 7.628 6.723 6.704 -5.348 -5.308 F6 -8.966 -8.964 -8.355 -8.274 6.615 6.632 F7 22.868 22.867 35.953 36.042 13.906 13.257 D2 9.024 9.023 8.748 8.779 8.407 8.435 D3 8.545 8.544 8.264 8.281 8.015 8.034 D14 7.01 7.014 7.76 7.753 8.132 8.143 SAG2 3.16 3.161 2.999 3.025 2.37 2.348 SAG3 -0.662 -0.662 -0.936 -0.928 -0.654 -0.631 SAG14 -0.125 -0.125 -0.522 -0.538 -1.338 -1.363 ​ -8.54 -8.56 -23.64 -24.256 -45.277 -46.356 ​ -0.112 -0.112 -0.116 -0.115 -0.118 -0.117 ​ -0.096 -0.096 -0.106 -0.107 -0.098 -0.097

[0658] Table 53-4

[0659] E19 E20 E21 E22 E23 E24 F 4.666 4.666 4.695 4.697 4.699 4.699 ​ 0.214 0.214 0.213 0.213 0.213 0.213 ​ 31.996 31.996 32.004 32.005 32.003 32.003 ​ 2.025 2.025 2.013 2.012 2.008 2.009 H 9.255 9.255 9.252 9.252 9.252 9.252 D 12 12 13 13 13.68 13.664 ​ 9.013 9.012 5.359 5.318 6.446 6.508 F1 -11.145 -11.15 -9.393 -9.417 -8.075 -8.037 F2 -8.237 -8.237 -9.639 -9.626 -9.812 -9.969 F3 10.23 10.232 12.9 12.918 13.285 13.404 F4 10.566 10.568 14.425 14.279 11.253 11.28 F5 -7.979 -7.98 -8.671 -8.603 7.148 7.154 F6 10.802 10.802 6.805 6.776 -8.038 -8.014 F7 16.464 16.457 21.932 21.808 33.079 33.082 D2 8.713 8.713 8.566 8.505 8.927 8.922 D3 7.944 7.943 8.086 8.039 8.564 8.574 D14 7.732 7.733 8.279 8.308 7.155 7.107 ​ 2.24 2.24 2.637 2.644 2.886 2.885 ​ -0.777 -0.777 -1.09 -1.083 -0.985 -0.982 ​ -0.921 -0.92 -0.496 -0.541 -0.621 -0.604 ​ -32.746 -32.737 -15.853 -17.111 -22.143 -21.479 ​ -0.09 -0.09 -0.106 -0.106 -0.124 -0.124 ​ -0.121 -0.121 -0.104 -0.104 -0.102 -0.1

[0660] Table 53-5

[0661] E25 E26 F 4.695 4.705 ​ 0.213 0.213 ​ 32.004 32.004 ​ 2.009 2.012 H 9.254 9.255 D 13.982 13.929 ​ 5.738 5.735 F1 -8.667 -8.495 F2 -10.475 -11.01 F3 15.572 15.622 F4 12.314 12.544 F5 7.178 7.267 F6 -8.755 -8.391 F7 31.547 26.868 D2 9.04 9.009 D3 8.604 8.605 D14 7.305 7.423 ​ 3.09 3.05 ​ -0.953 -0.96 ​ -0.11 -0.118 ​ -10.695 -12.085 ​ -0.115 -0.118 ​ -0.095 -0.091

[0662] Table 54-1

[0663] E1 E2 E3 E4 E5 E6 ​ 1.143 1.144 1.161 1.175 1.188 1.173 ​ 0.168 0.168 0.171 0.173 0.173 0.171 ​ 0.18 0.18 0.156 0.137 0.126 0.154 ​ 1.045 1.045 1.018 1.008 1.072 1.076 ​ 0.154 0.154 0.15 0.148 0.156 0.157 ​ 4.92 4.918 5.11 5.912 5.366 5.697 ​ -1.812 -1.812 -1.592 -1.597 -2.052 -2.076 ​ 0.32 0.32 0.303 0.305 0.324 0.323 ​ 0.523 0.523 0.687 0.687 0.393 0.389 ​ 0.679 0.679 0.719 0.713 0.668 0.669 ​ 0.569 0.568 0.323 0.633 0.511 0.488 ​ 2.294 2.295 2.422 2.408 2.294 2.295 ​ -1.011 -1.011 -1.131 -1.093 -0.861 -0.849 ​ -0.5 -0.499 -0.61 -0.577 -0.422 -0.433 ​ -2.912 -2.912 -2.199 -2.347 -3.765 -3.672 ​ 0.502 0.502 0.592 0.603 0.536 0.539 ​ 1.014 1.014 0.84 0.817 0.991 1 ​ -0.058 -0.059 -0.053 -0.046 -0.041 -0.05 ​ 0.049 0.049 0.007 0.003 0.058 0.055 ​ -2.151 -2.151 -4.725 -5.232 -1.984 -1.918 ​ 2.742 2.742 4.366 4.819 3.608 3.638 ​ -0.812 -0.813 -0.306 -0.229 -1.088 -1.183 ​ 0.162 0.162 0.02 0.02 0.021 0.021 ​ 0.171 0.171 0.021 0.021 0.021 0.021 ​ 2.508 2.508 2.559 2.583 2.659 2.573 ​ 0.096 0.096 0.053 0.044 0.067 0.069 ​ 0.577 0.577 0.639 0.631 0.522 0.518 ​ 0.232 0.233 0.227 0.199 0.221 0.206 ​ 0.033 0.033 0.003 0.003 0.003 0.003 ​ 25.991 25.973 18.851 16.226 18.59 20.35

[0664] Table 54-2

[0665] E7 E8 E9 E10 E11 E12 ​ 1.14 1.142 1.351 1.333 1.113 1.113 ​ 0.168 0.168 0.198 0.196 0.163 0.163 ​ 0.178 0.175 0.202 0.199 0.209 0.208 ​ 1.028 1.032 1.034 1.041 1.037 1.037 ​ 0.152 0.152 0.152 0.153 0.152 0.152 ​ 3.764 3.784 5.641 5.468 3.094 3.094 ​ -1.608 -1.61 -1.809 -1.802 -1.995 -1.995 ​ 0.301 0.302 0.321 0.321 0.322 0.322 ​ 0.687 0.687 0.543 0.552 0.407 0.407 ​ 0.723 0.722 0.677 0.678 0.675 0.675 ​ 0.661 0.658 0.364 0.359 0.682 0.682 ​ 2.431 2.428 2.295 2.295 2.296 2.296 ​ -1.144 -1.142 -0.895 -0.92 -0.906 -0.905 ​ -0.67 -0.67 -0.488 -0.505 -0.382 -0.382 ​ -1.959 -1.96 -2.958 -2.839 -4.15 -4.144 ​ 0.571 0.569 0.494 0.494 0.549 0.549 ​ 0.877 0.873 0.892 0.873 0.995 0.995 ​ -0.062 -0.061 -0.07 -0.069 -0.074 -0.074 ​ 0.019 0.019 0.08 0.084 0.031 0.031 ​ -3.957 -3.967 -2.962 -3.147 -2.01 -2.009 ​ 4.384 4.385 4.521 4.679 2.436 2.435 ​ -0.417 -0.412 0.127 0.128 9.069 9.079 ​ 0.018 0.02 0.04 0.02 0.07 0.07 ​ 0.021 0.023 0.044 0.021 0.062 0.062 ​ 2.64 2.642 2.922 2.932 4.311 4.308 ​ 0.063 0.063 0.031 0.031 0.09 0.091 ​ 0.64 0.641 0.571 0.577 0.52 0.52 ​ 0.303 0.302 0.24 0.244 0.36 0.36 ​ 0.003 0.003 0.006 0.003 0.009 0.009 ​ 21.269 21.024 20.379 20.111 36.902 36.776

[0666] Table 54-3

[0667] E13 E14 E15 E16 E17 E18 ​ 1.559 1.558 1.132 1.13 1.853 1.861 ​ 0.227 0.227 0.166 0.166 0.27 0.272 ​ 0.05 0.05 0.213 0.219 0.403 0.414 ​ 0.998 0.999 1.017 1.023 0.827 0.818 ​ 0.146 0.146 0.149 0.15 0.121 0.119 ​ 4.897 4.898 7.641 7.669 2.976 2.837 ​ -1.92 -1.921 -1.826 -1.85 -1.818 -1.823 ​ 0.324 0.324 0.312 0.454 0.278 0.277 ​ 0.464 0.464 0.471 0.462 0.553 0.567 ​ 0.67 0.67 0.696 0.478 0.782 0.782 ​ 0.095 0.095 0.369 0.369 0.503 0.501 ​ 2.285 2.285 2.359 1.622 2.667 2.667 ​ -0.85 -0.851 -0.805 -0.81 -0.808 -0.8 ​ -0.34 -0.34 -0.489 -0.484 -0.39 -0.379 ​ -4.52 -4.521 -3.027 -3.075 -3.455 -3.544 ​ 0.488 0.488 0.502 0.507 0.516 0.515 ​ 0.972 0.972 1.042 1.042 1.009 1 ​ -0.018 -0.018 -0.067 -0.069 -0.165 -0.167 ​ 0.052 0.052 0.049 0.05 0.065 0.067 ​ -2.226 -2.226 -2.003 -1.986 -2.179 -2.211 ​ 3.936 3.936 3.433 3.45 1.931 1.935 ​ -0.505 -0.507 -0.739 -0.754 0.037 0.102 ​ 0.019 0.019 0.02 0.02 0.023 0.023 ​ 0.021 0.021 0.021 0.021 0.021 0.021 ​ 2.219 2.218 2.402 2.394 3.9 4.128 ​ 0.016 0.016 0.088 0.086 0.008 0.008 ​ 0.52 0.52 0.557 0.553 0.455 0.449 ​ 0.318 0.318 0.148 0.147 0.622 0.656 ​ 0.003 0.003 0.004 0.004 0.004 0.004 ​ 8.54 8.56 23.64 24.256 45.277 46.356

[0668] Table 54-4

[0669] E19 E20 E21 E22 E23 E24 ​ 1.932 1.931 1.141 1.132 1.372 1.385 ​ 0.282 0.282 0.167 0.166 0.201 0.203 ​ 0.319 0.319 0.182 0.197 0.26 0.254 ​ 0.826 0.826 0.968 0.97 1.006 1.004 ​ 0.12 0.12 0.142 0.142 0.148 0.147 ​ 3.529 3.527 4.671 4.643 7.04 7.04 ​ -2.389 -2.39 -2.001 -2.005 -1.718 -1.71 ​ 0.278 0.278 0.299 0.299 0.315 0.314 ​ 0.434 0.433 0.433 0.423 0.618 0.624 ​ 0.787 0.787 0.727 0.727 0.69 0.691 |(d4-R4) / R5| 0.344 0.344 0.317 0.321 0.621 0.633 TTL / D 2.666 2.666 2.462 2.462 2.339 2.342 F5 / F6 -0.739 -0.739 -1.274 -1.27 -0.889 -0.893 R2 / R3 -0.508 -0.508 -0.596 -0.593 -0.499 -0.497 (SAG2 / D2) / (SAG3 / D3) -2.628 -2.628 -2.284 -2.308 -2.811 -2.823 (d1+d3+d5+d7+d10+d11+d13) / TTL 0.489 0.489 0.521 0.527 0.501 0.5 (|φ1|+|φ2|) / |φ| 0.986 0.986 0.986 0.986 1.061 1.052 SAG14 / D14 -0.119 -0.119 -0.06 -0.065 -0.087 -0.085 d4 / TTL 0.042 0.042 0.051 0.051 0.032 0.032 F2 / F -1.765 -1.765 -2.053 -2.049 -2.088 -2.122 F3 / F 2.192 2.193 2.748 2.75 2.827 2.853 R7 / (d7+R8) -4.061 -4.063 -0.019 -0.034 -0.494 -0.461 d6 / d7 0.216 0.216 0.205 0.17 0.323 0.341 d6 / F 0.215 0.215 0.206 0.171 0.353 0.372 F4 / F 2.264 2.265 3.072 3.04 2.395 2.401 d12 / TTL 0.007 0.007 0.082 0.082 0.059 0.056 d2 / F1 0.346 0.346 0.484 0.484 0.585 0.587 BFL / F7 0.547 0.548 0.244 0.244 0.195 0.197 d6 / (F3+F4) 0.048 0.048 0.035 0.03 0.068 0.071 |arctan(1 / K(S14))| 32.746 32.737 15.853 17.111 22.143 21.479

[0670] Table 54-5

[0671] E25 E26 BFL / F 1.222 1.219 BFL / TTL 0.179 0.179 |SAG14 / d13| 0.048 0.05 d2 / F 1.043 1.03 d2 / TTL 0.153 0.151 F7 / F 6.719 5.711 F1 / F -1.846 -1.806 D / H / F 0.322 0.32 R1 / TTL 0.51 0.531 (F×θ) / D 0.675 0.68 |(d4-R4) / R5| 0.59 0.613 TTL / D 2.289 2.298 F5 / F6 -0.82 -0.866 R2 / R3 -0.476 -0.479 (SAG2 / D2) / (SAG3 / D3) -3.086 -3.035 (d1+d3+d5+d7+d10+d11+d13) / TTL 0.486 0.486 (|φ1|+φ2|) / |φ| 0.986 0.981 SAG14 / D14 -0.015 -0.016 d4 / TTL 0.035 0.039 F2 / F -2.231 -2.34 F3 / F 3.317 3.32 R7 / (d7+R8) -0.485 -0.455 d6 / d7 0.268 0.248 d6 / F 0.279 0.256 F4 / F 2.623 2.666 d12 / TTL 0.07 0.071 d2 / F1 0.565 0.571 BFL / F7 0.182 0.213 d6 / (F3+F4) 0.047 0.043 |arctan(1 / K(S14))| 10.695 12.085

[0672] The present application also provides an electronic device comprising the optical lens of the exemplary embodiment described above and an imaging element for converting an optical image formed by the optical lens into an electrical signal. The imaging element is disposed on a second side of the optical lens, for example, on an imaging surface, and may be, for example, a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). Light from the first side passes through the optical lens to form an image on the second side.

[0673] The present application also provides an electronic device comprising the optical lens of the exemplary embodiment described above and a light source, wherein the light source is located on the second side of the optical lens. Light emitted by the light source passes through the optical lens and is projected onto the first side of the optical lens, thereby forming an image or illuminating an area on the first side.

[0674] The present application also provides an electronic device, which includes a first device and a second device, wherein the first device may be, for example, a laser radar transmitting device, and the second device may be, for example, a laser radar receiving device. The first device may include the optical lens and the light source in the above exemplary embodiment, wherein the light source is located on the second side of the optical lens, and the light emitted by the light source is projected onto the first side of the optical lens after passing through the optical lens, and forms an image or illuminates an area on the first side. The second device may include the optical lens in the above exemplary embodiment and an imaging element for converting the optical image formed by the optical lens into an electrical signal, wherein the imaging element is disposed on the second side of the optical lens (e.g., on the imaging surface), and the imaging element may be, for example, a photocoupler (CCD) or a complementary metal oxide semiconductor (CMOS), and the light from the first side is imaged on the second side after passing through the optical lens.

[0675] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, characterized in that: The device comprises, in order from the first side to the second side along the optical axis: a first lens having negative optical power, wherein a first side surface of the first lens is convex and a second side surface of the first lens is concave; a second lens having negative optical power, wherein the first side surface of the second lens is concave; a third lens having positive optical power, wherein the first side surface of the third lens and / or the second side surface of the third lens are convex; a fourth lens element having positive optical power, wherein the first side surface of the fourth lens element and / or the second side surface of the fourth lens element are convex surfaces; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having positive optical power; The fifth lens and the sixth lens are cemented together to form a cemented lens; The positive and negative properties of the optical power of the fifth lens and the sixth lens are opposite; The number of lenses having optical power in the optical lens is seven; The optical lens satisfies: 0.02≤d6 / F≤0.43; Wherein, d6 is the center distance between the third lens and the fourth lens, and F is the focal length of the optical lens.

2. The optical lens according to claim 1, wherein: The second side surface of the second lens is a convex surface or a concave surface.

3. The optical lens according to claim 1, wherein: The first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface; or, The first side surface of the third lens is a convex surface, and the second side surface of the third lens is a concave surface; or, The first side surface of the third lens is concave, and the second side surface of the third lens is convex.

4. The optical lens according to claim 1, wherein: 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, The first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a concave surface; or, The first side surface of the fourth lens is concave, and the second side surface of the fourth lens is convex.

5. The optical lens according to claim 1, wherein: The fifth lens has positive refractive power, and the sixth lens has negative refractive power.

6. The optical lens according to claim 1, wherein: The fifth lens has a negative optical power, and the sixth lens has a positive optical power.

7. The optical lens according to claim 1, wherein: 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; or, The first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a convex surface; or The first side surface of the fifth lens is a concave surface, and the second side surface of the fifth lens is a concave surface; or The first side surface of the fifth lens is convex, and the second side surface of the fifth lens is concave.

8. The optical lens according to claim 1, wherein: The first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a convex surface; or, The first side surface of the seventh lens is concave, and the second side surface of the seventh lens is convex; or The first side surface of the seventh lens is convex, and the second side surface of the seventh lens is concave.

9. The optical lens according to any one of claims 1 to 8, characterized in that: The optical back focus BFL of the optical lens and the focal length F of the optical lens satisfy: 0.95≤BFL / F≤2.

22.

10. The optical lens according to any one of claims 1 to 8, characterized in that: The optical back focus BFL of the optical lens and the total optical length TTL of the optical lens satisfy: 0.14≤BFL / TTL≤0.32.

Images