Optical lenses and electronic devices

Abstract

An optical lens includes, from the object side to the image side, a first lens with positive refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with negative refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, a seventh lens with negative refractive power, an eighth lens with negative refractive power, a ninth lens with refractive power, and a tenth lens with positive refractive power. The optical lens proposed by the present invention can have the characteristics of being light and thin, having a high zoom ratio, low distortion, and high imaging quality.

Description

Technical Field

[0001] The invention relates to an optical lens and an electronic device, and in particular to an optical lens and an electronic device which are light and thin, have a high zoom ratio and good imaging quality. Background Art

[0002] Optical lenses can be divided into fixed-focus lenses and zoom lenses. Zoom lenses have the advantage of variable focal length, making them more widely applicable. In order to achieve high zoom ratio, low distortion and high image quality, most zoom lenses require multiple lenses, which makes it impossible to reduce the optical volume of the zoom lens; if the number of lenses is reduced, the performance requirements of the zoom lens cannot be achieved. Therefore, it is urgent to propose a new optical lens that can simultaneously meet the requirements of lightness, high zoom ratio and high image quality. Summary of the invention

[0003] The invention relates to an optical lens and an electronic device, which have the characteristics of lightness, high zoom ratio, low distortion and high imaging quality.

[0004] The present invention provides an optical lens. The optical lens comprises, from the object side to the image side, a first lens having positive refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having negative refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, a seventh lens having negative refractive power, an eighth lens having negative refractive power, a ninth lens having refractive power, and a tenth lens having positive refractive power.

[0005] The present invention further proposes an optical lens. The optical lens includes, from the object side to the image side, a first lens group, a second lens group, a third lens group, and a fourth lens group. The first lens group has positive refractive power and includes a first lens and a second lens. The second lens group has negative refractive power and includes a third lens, a fourth lens, and a fifth lens. The third lens group has positive refractive power and includes a sixth lens and a seventh lens. The fourth lens group has positive refractive power and includes an eighth lens, a ninth lens, and a tenth lens.

[0006] The present invention further provides an optical lens. The optical lens includes, from the object side to the image side, a first lens having a refractive power, a second lens having a refractive power, a third lens having a refractive power, a fourth lens having a negative refractive power, a fifth lens having a negative refractive power, a sixth lens having a refractive power, a seventh lens having a negative refractive power, an eighth lens having a negative refractive power, a ninth lens having a refractive power, and a tenth lens having a positive refractive power. At least one of the first lens and the sixth lens is a cemented lens.

[0007] The present invention further proposes an electronic device, comprising an optical lens, a control module and a driving module. The optical lens has a plurality of lenses, the control module is electrically connected to the optical lens, and the driving module is electrically connected to the control module and the optical lens. The optical lens can continuously capture a plurality of images, the control module can calculate the focus data of the optical lens according to the target in the image, and the driving module can drive the optical lens to focus according to the focus data.

[0008] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the positions of various lenses when the optical lens of one embodiment of the present invention is at the telephoto end;

[0010] Figure 2 for Figure 1 A schematic diagram showing the positions of the lenses when the optical lens is at the wide-angle end;

[0011] Figure 3 for Figure 1 An embodiment of various lens parameters when the optical lens is at the telephoto end;

[0012] Figure 4 for Figure 2 An embodiment of various lens parameters of the optical lens at the wide-angle end;

[0013] Figure 5 for Figure 1 The aspheric mathematical coefficients of the aspheric lens of one embodiment of the optical lens; and

[0014] Figure 6 for Figure 1 The specific parameters of the optical lens are shown.

[0015] Figure 7 FIG. 4 is a schematic diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0017] The following will describe in detail various embodiments of the present invention, and will be illustrated with the accompanying drawings. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, and any easy replacement, modification, and equivalent changes of the embodiments are included in the scope of this case, and are subject to the scope of the subsequent claims. In the description of the specification, many specific details are provided to give the reader a more complete understanding of the present invention; however, the present invention may still be implemented on the premise of omitting some or all of these specific details. In addition, well-known steps or elements are not described in detail to avoid unnecessary limitations on the present invention. The same or similar elements in the drawings will be represented by the same or similar symbols. It should be noted that the drawings are for illustration only and do not represent the actual size or quantity of the elements unless otherwise specified.

[0018] Figure 1 FIG. 1 is a schematic diagram showing the positions of various lenses when the optical lens OL is at the tele end according to an embodiment of the present invention. Figure 2 for Figure 1 Schematic diagram of the positions of the lenses when the optical lens OL is at the wide end. In order to show the features of the embodiment, only the structures related to the embodiment of the present invention are shown, and the other structures are omitted.

[0019] The optical lens OL can be a zoom lens, which can be applied to a device with image projection or image capture function, including but not limited to a handheld computer system, a handheld communication system, a drone mobile camera lens, a car camera lens, a surveillance system, a webcam, a digital camera, a digital video camera or a projector.

[0020] Please refer to Figure 1 and Figure 2 , the left side is the object side, and the right side is the image-forming side. The light beam can penetrate each lens in the optical lens OL from the object side and form an image on an imaging surface IMA on the image side. The optical lens OL may include a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a ninth lens L9 and a tenth lens L10 in order from the object side to the image side, and the ten lenses may be arranged along an optical axis OA. Among them, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9 and the tenth lens L10 may have a refractive power respectively.

[0021] In one embodiment, the first lens L1 may have a positive refractive power; the second lens L2 may have a positive refractive power; the third lens L3 may have a positive refractive power; the fourth lens L4 may have a negative refractive power; the fifth lens L5 may have a negative refractive power; the sixth lens L6 may have a positive refractive power; the seventh lens L7 may have a negative refractive power; the eighth lens L8 may have a negative refractive power; the ninth lens L9 may have a positive refractive power; and the tenth lens L10 may have a positive refractive power.

[0022] In one embodiment, the first lens L1 may include a first sub-lens L11 and a second sub-lens L12; in another embodiment, the sixth lens L6 may include a third sub-lens L61 and a fourth sub-lens L62. The first sub-lens L11, the second sub-lens L12, the third sub-lens L61, and the fourth sub-lens L62 may have refractive powers respectively.

[0023] In a specific embodiment, the first sub-lens L11 may have a negative refractive power; the second sub-lens L12 may have a positive refractive power; the third sub-lens L61 may have a positive refractive power; and the fourth sub-lens L62 may have a negative refractive power.

[0024] In one embodiment, the first lens L1 may be a cemented lens, that is, the first sub-lens L11 and the second sub-lens L12 may be cemented to form the first lens L1; in another embodiment, the sixth lens L6 may be a cemented lens, that is, the third sub-lens L61 and the fourth sub-lens L62 may be cemented to form the sixth lens L6. In another embodiment, the refractive power of the first lens L1 is greater than the refractive power of the sixth lens L6.

[0025] In one embodiment, the total lens length is defined as the distance between the object side surface S1 of the first lens L1 and the imaging surface IMA. The total lens length of the optical lens OL is TTL, the total lens length of the optical lens OL at the telephoto end is TLt, the total lens length of the optical lens OL at the wide-angle end is TLw, and the optical lens OL can satisfy the condition of TLt=TLw.

[0026] In a specific embodiment, the optical lens OL can satisfy the condition of TTL=TLt=TLw, that is, during the zooming process of the optical lens OL, the total length of the optical lens OL remains constant.

[0027] In a specific embodiment, the optical lens OL may satisfy at least one of the following conditions: 70 mm ≤ TTL, 75 mm ≤ TTL, 80 mm ≤ TTL, TTL ≤ 90 mm, TTL ≤ 95 mm, and TTL ≤ 100 mm.

[0028] In one embodiment, the effective focal length of the optical lens OL at the telephoto end is Ft, the effective focal length of the optical lens OL at the wide-angle end is Fw, and the optical lens OL can satisfy at least one of the following conditions: 1.5 ≤ Ft / Fw, 2 ≤ Ft / Fw, 2.5 ≤ Ft / Fw, 2.7 ≤ Ft / Fw, Ft / Fw ≤ 3.3, Ft / Fw ≤ 3.5, and Ft / Fw ≤ 4.

[0029] In one embodiment, the effective focal length of the telephoto end of the optical lens OL can satisfy at least one of the following conditions: 80 mm ≤ Ft, 85 mm ≤ Ft, 90 mm ≤ Ft, Ft ≤ 95 mm, Ft ≤ 100, Ft ≤ 110 mm, Ft ≤ 115 mm, and Ft ≤ 120 mm.

[0030] In one embodiment, the effective focal length of the wide-angle end of the optical lens OL can satisfy at least one of the following conditions: 20 mm ≤ Fw, 25 mm ≤ Fw, 30 mm ≤ Fw, Fw ≤ 35 mm, Fw ≤ 40 mm, and Fw ≤ 45 mm.

[0031] In one embodiment, the telephoto end of the optical lens OL can satisfy at least one of the following conditions: 0.75 ≤ TTL / Ft, 0.8 ≤ TTL / Ft, 0.9 ≤ TTL / Ft, TTL / Ft ≤ 0.95, TTL / Ft ≤ 1, TTL / Ft ≤ 1.1, TTL / Ft ≤ 1.2, and TTL / Ft ≤ 1.5.

[0032] In one embodiment, the wide-angle end of the optical lens OL can satisfy at least one of the following conditions: 2 ≤ TTL / Fw, 2.5 ≤ TTL / Fw, TTL / Fw ≤ 3, TTL / Fw ≤ 3.3, and TTL / Fw ≤ 3.5.

[0033] In one embodiment, the incident light beam incident on the optical lens OL can be converged onto the imaging surface IMA. If the imaging height on the imaging surface IMA is Y', the optical lens OL can satisfy at least one of the following conditions: 5 ≤ Fw / Y', 5.5 ≤ Fw / Y', 6.5 ≤ Fw / Y', 7 ≤ Fw / Y', 7.5 ≤ Fw / Y', Fw / Y' ≤ 8.2, Fw / Y' ≤ 9, Fw / Y' ≤ 10, and Fw / Y' ≤ 12.

[0034] In one embodiment, the wide-angle end of the optical lens OL can satisfy at least one of the following conditions: 20 < Ft / Y', 22 ≤ Ft / Y', 23.5 ≤ Ft / Y', Ft / Y' ≤ 24.5, Ft / Y' ≤ 30, and Ft / Y' < 35.

[0035] Furthermore, in one embodiment, the first sub-lens L11 of the first lens L1 has a refractive index N11 and an Abbe number V11; the second sub-lens L12 of the first lens L1 has a refractive index N12 and an Abbe number V12; the second lens L2 has a refractive index N2 and an Abbe number V2; the third lens L3 has a refractive index N3 and an Abbe number V3; the fourth lens L4 has a refractive index N4 and an Abbe number V4; the fifth lens L5 has a refractive index N5 and an Abbe number V5; the third sub-lens L61 of the sixth lens L6 has a refractive index N61 and an Abbe number V61; the fourth sub-lens L62 of the sixth lens L6 has a refractive index N62 and an Abbe number V62; the seventh lens L7 has a refractive index N7 and an Abbe number V7; the eighth lens L8 has a refractive index N8 and an Abbe number V8; the ninth lens L9 has a refractive index N9 and an Abbe number V9; and the tenth lens L10 has a refractive index N10 and an Abbe number V10. The optical lens OL may satisfy at least one of the following conditions: N11>N12, N11>N2, N3>N4, N3>N5, N61>N62, N61>N7, N8>N9, N8>N10, V12>V11, V2>V11, V5>V4, V5>V3, V62>V8, V7>V8, V10>V9 and V10>V8.

[0036] In one embodiment, the curvature radius of the object-side surface S1 of the first sub-lens L11 is R1, and the curvature radius of the image-side surface S2 of the first sub-lens L11 is R2. The optical lens OL may satisfy at least one of the following conditions: 0≤|(R1-R2) / (R1+R2)|, 0.1≤|(R1-R2) / (R1+R2)|, 0.2≤|(R1-R2) / (R1+R2)|, 0.25≤|(R1-R2) / (R1+R2)|, |(R1-R2) / (R1+R2)|≤0.3, |(R1-R2) / (R1+R2)|≤0.35, |(R1-R2) / (R1+R2)|≤0.5, |(R1-R2) / (R1+R2)|≤0.7, and |(R1-R2) / (R1+R2)|<1.

[0037] Specifically, in one embodiment, the optical lens OL may further satisfy at least one of the following conditions: 0≤(R1-R2) / (R1+R2), 0.1≤(R1-R2) / (R1+R2), 0.2≤(R1-R2) / (R1+R2), 0.25≤(R1-R2) / (R1+R2), (R1-R2) / (R1+R2)≤0.3, (R1-R2) / (R1+R2)≤0.35, (R1-R2) / (R1+R2)≤0.5, (R1-R2) / (R1+R2)≤0.7 and (R1-R2) / (R1+R2)<1.

[0038] In one embodiment, the curvature radius of the object-side surface S23 of the tenth lens L10 is R23, and the curvature radius of the image-side surface S24 of the tenth lens L10 is R24. The optical lens OL may satisfy at least one of the following conditions: 0≤|(R23+R24) / (R23-R24)|, 0.01≤|(R23+R24) / (R23-R24)|, 0.03≤|(R23+R24) / (R23-R24)|, 0.05≤|(R23+R24) / (R23-R24)|, |(R23 |(R23+R24) / (R23-R24)|≤0.07, |(R23+R24) / (R23-R24)|≤0.085, |(R23+R24) / (R23-R24)|≤0.1, |(R23+R24) / (R23-R24)|≤0.15 and |(R23+R24) / (R23-R24)|≤0.2.

[0039] Specifically, in one embodiment, the optical lens OL may further satisfy at least one of the following conditions: 0≤(R23+R24) / (R23-R24), 0.01≤(R23+R24) / (R23-R24), 0.03≤(R23+R24) / (R23-R24), 0.05≤(R23+R24) / (R23-R24), (R23+R24) / (R23-R24)≤0.07, (R23+R24) / (R23-R24)≤0.085, (R23+R24) / (R23-R24)≤0.1, (R23+R24) / (R23-R24)≤0.15 and (R23+R24) / (R23-R24)≤0.2.

[0040] In one embodiment, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9 and the tenth lens L10 may be spherical lenses or aspherical lenses, respectively.

[0041] Specifically, the object side surface and the image side surface of each spherical lens are both spherical surfaces; and each aspherical lens has at least one aspherical surface, that is, the object side surface and / or the image side surface of the aspherical lens are aspherical surfaces. And each aspherical surface can satisfy the following mathematical formula:

[0042]

[0043] Among them, Z is the coordinate value in the direction of the optical axis OA, with the light transmission direction as the positive direction, A2, A4, A6, A8 and A10 are aspheric coefficients, K is the quadratic constant, C=1 / R, R is the radius of curvature, and Y is the coordinate value orthogonal to the direction of the optical axis OA, with the direction away from the optical axis OA as the positive direction. In addition, the values ​​of each parameter or coefficient of the mathematical formula of each aspheric surface can be set separately to determine the focal length of each position point of the aspheric surface.

[0044] In one specific embodiment, the first lens L1 to the tenth lens L10 are all spherical lenses; in another specific embodiment, the tenth lens L10 is an aspherical lens. In yet another specific embodiment, the first sub-lens L11 and the second sub-lens L12 of the first lens L1, and the third sub-lens L61 and the fourth sub-lens L62 of the sixth lens L6 are all spherical lenses.

[0045] In addition, in one embodiment, the first lens L1 to the tenth lens L10 can be glass lenses made of glass materials or plastic lenses made of plastic materials. In one specific embodiment, the first lens L1 to the tenth lens L10 are all glass lenses, but the present invention is not limited thereto; in another specific embodiment, at least one of the first lens L1 to the tenth lens L10 is a plastic lens.

[0046] Furthermore, the material of the plastic lens may include, but is not limited to, polycarbonate, cycloolefin copolymer (such as APEL), and polyester resin (such as OKP4 or OKP4HT), etc., or may be a mixed and / or compound material containing at least one of the aforementioned three.

[0047] Also refer to Figure 1 and Figure 2 The object-side surfaces S1, S11, and S19 of the first sub-lens L11 of the first lens L1, the fifth lens L5, and the eighth lens L8 can all be convex surfaces convex toward the object side and have positive refractive power; the image-side surfaces S2, S12, and S20 can all be concave surfaces concave toward the object side and have positive refractive power. The first sub-lens L11, the fifth lens L5, and the eighth lens L8 can all be lenses with negative refractive power, including but not limited to convex-concave lenses, glass lenses, or plastic lenses with negative refractive power, and any one or a combination of spherical lenses or aspherical lenses.

[0048] The object-side surfaces S3, S7, and S23 of the second sub-lens L12, the third lens L3, and the tenth lens L10 of the first lens L1 can all be convex surfaces convex toward the object side and have positive refractive power; the image-side surfaces S4, S8, and S24 can all be convex surfaces convex toward the image side and have negative refractive power. The second sub-lens L12, the third lens L3, and the tenth lens L10 can all be lenses with positive refractive power, including but not limited to biconvex lenses, glass lenses, or plastic lenses, and any one or a combination of spherical lenses or aspherical lenses with positive refractive power.

[0049] The object-side surfaces S5 and S21 of the second lens L2 and the ninth lens L9 can be convex surfaces convex toward the object side and have positive refractive power; the image-side surfaces S6 and S22 can be concave surfaces concave toward the object side and have positive refractive power. The second lens L2 and the ninth lens L9 can both be lenses with positive refractive power, including but not limited to convex-concave lenses, glass lenses or plastic lenses with positive refractive power, and any one or a combination of spherical lenses or aspherical lenses.

[0050] The object-side surface S9 of the fourth lens L4 may be a concave surface that is concave toward the image side and has a negative refractive power; the image-side surface S10 may be a concave surface that is concave toward the object side and has a positive refractive power. The fourth lens L4 may be a lens with negative refractive power, including but not limited to a biconcave lens, a glass lens or a plastic lens with negative refractive power, and any one or a combination of a spherical lens or an aspherical lens.

[0051] The object-side surface S13 of the third sub-lens L61 of the sixth lens L6 may be a concave surface that is concave toward the image side and has a negative refractive power; the image-side surface S14 may be a convex surface that is convex toward the image side and has a negative refractive power. The third sub-lens L61 may be a lens with positive refractive power, including but not limited to a meniscus lens, a glass lens or a plastic lens, and any one or a combination of a spherical lens or an aspherical lens.

[0052] The object-side surfaces S15 and S17 of the fourth sub-lens L62 of the sixth lens L6 and the seventh lens L7 can both be concave surfaces that are concave toward the image side and have negative refractive powers; the image-side surfaces S16 and S18 can both be convex surfaces that are convex toward the image side and have negative refractive powers. The fourth sub-lens L62 and the seventh lens L7 can both be lenses with negative refractive power, including but not limited to meniscus lenses, glass lenses or plastic lenses with negative refractive power, and any one or a combination of spherical lenses or aspherical lenses.

[0053] In one embodiment, the optical lens OL may further include an aperture STO; in another embodiment, an image capture unit (not shown) may be further provided on the imaging surface IMA, which may perform photoelectric conversion on the light beam penetrating the optical lens OL. The aperture STO may be provided on the object side of the first lens L1, in any gap between any two lenses from the first lens L1 to the tenth lens L10, or between the tenth lens L10 and the imaging surface IMA. In a specific embodiment, the aperture STO is provided between the fifth lens L5 and the sixth lens L6, but is not limited thereto.

[0054] Furthermore, the optical lens OL may further include a filter F and / or a protective film C. In one embodiment, the filter F may be disposed between the tenth lens L10 and the imaging surface IMA. In one specific embodiment, the filter F may be an infrared filter (IRFilter); in another embodiment, the protective film C may be disposed between the filter F and the imaging surface IMA, and a filter film (not shown) may be formed on the protective film C; in yet another embodiment, only the protective film C that integrates the functions of protecting the image capture unit and filtering the infrared beam may be used.

[0055] Figure 3 List Figure 1 An embodiment of the lens parameters when the optical lens OL is at the telephoto end, Figure 4 List Figure 2 An embodiment of various lens parameters of the optical lens OL at the wide-angle end.

[0056] Figure 3 and Figure 4 They include the radius of curvature, thickness, refractive index, Abbe number (chromatic aberration coefficient), effective diameter and effective focal length of each lens, etc. The surface codes of the lenses are arranged in order from the object side to the image side, for example: "STO" represents the aperture STO, "S1" represents the object side surface S1 of the first sub-lens L11 of the first lens L1, "S2" represents the image side surface S2 of the first sub-lens L11 of the first lens L1..., "S25" and "S26" represent the object side surface S25 and the image side surface S26 of the filter F, "S27" and "S28" represent the object side surface S27 and the image side surface S28 of the protective sheet C, etc. In addition, "thickness" represents the distance between the surface and the next surface adjacent to the image side direction. For example, the "thickness" of the object-side surface S1 is the distance between the object-side surface S1 of the first sub-lens L11 and the image-side surface S2; the "thickness" of the image-side surface S2 is the distance between the image-side surface S2 of the first sub-lens L11 and the object-side surface S3 of the second sub-lens L12 of the first lens L1.

[0057] Also refer to Figures 1 to 4, the first lens L1 is at the same position at the wide-angle end and the telephoto end. However, during the zooming process of the optical lens OL, the first lens L1 can be moved or fixed on the optical axis OA, and is not limited to the same position.

[0058] Figure 5 List Figure 1 The coefficients of the aspheric mathematical formula of the aspheric lens of one embodiment of the optical lens OL are aspheric surface coefficients. If the object side surface S23 and the image side surface S24 of the tenth lens L10 of the optical lens OL are respectively aspheric surfaces, the coefficients of each aspheric mathematical formula can be as follows: Figure 5 shown.

[0059] Further, refer to Figure 1 and Figure 2 In one embodiment, the optical lens OL may be defined as a first lens group G1, a second lens group G2, a third lens group G3, and a fourth lens group G4. The first lens group G1 may include a first lens L1 and a second lens L2; ​​the second lens group G2 may include a third lens L3, a fourth lens L4, and a fifth lens L5; the third lens group G3 may include a sixth lens L6 and a seventh lens L7; the fourth lens group G4 may include an eighth lens L8, a ninth lens L9, and a tenth lens L10. In one specific embodiment, the first lens group G1 may have a positive refractive power, the second lens group G2 may have a negative refractive power, the third lens group G3 may have a positive refractive power, and the fourth lens group G4 may have a positive refractive power.

[0060] In addition, in one specific embodiment, the first lens group G1, the second lens group G2, the third lens group G3 and the fourth lens group G4 of the optical lens OL can be displaced between the telephoto end and the wide-angle end along the optical axis OA during the zooming process; in another specific embodiment, the position of the first lens group G1 during the zooming process remains unchanged; in another specific embodiment, during the zooming process, the aperture STO can move along the optical axis OA with the third lens group G3, but is not limited to this.

[0061] Figure 6 To list Figure 1 The parameters of the specific embodiment of the optical lens OL include the effective focal length Fw of the optical lens OL at the wide-angle end, the effective focal length Ft at the telephoto end, the effective focal length Ft of the first lens group G1, G1 , the effective focal length F of the second lens group G2 G2 , the effective focal length F of the third lens group G3 G3 , the effective focal length F of the fourth lens group G4 G4, the distance TTL between the object-side surface S1 of the first lens L1 and the imaging plane IMA, the aperture value Fno, the imaging height Y', the viewing angle FOVw of the optical lens OL at the wide-angle end, the viewing angle FOVt at the telephoto end, the curvature radii R1, R23, R2 and R24 of the object-side surfaces S1, S23 and the image-side surfaces S2, S24 at the optical axis OA, and the values ​​of the relationship between the above parameters.

[0062] Furthermore, in one embodiment, the optical lens OL may satisfy at least one of the following conditions: 1.2≤|F G1 / F G2 |、1.5≤|F G1 / F G2 |、1.7≤|F G1 / F G2 |、1.9≤|F G1 / F G2 |、|F G1 / F G2 |≤2,|F G1 / F G2 |≤2.2 and |F G1 / F G2 |≤2.5.

[0063] Figure 7 FIG. 1 is a schematic diagram of an electronic device 100 according to an embodiment of the present invention. Figure 1 , Figure 2 and Figure 7 The electronic device 100 includes an optical lens OL, a control module 30 and a driving module 50. The control module 30 is electrically connected to the optical lens OL, and the driving module 50 is electrically connected to the control module 30 and the optical lens OL.

[0064] The optical lens OL can continuously capture multiple frame images and transmit the images to the control module 30. At least two of the multiple frame images contain a target object, wherein the target object can be a person, a face, an animal, an object pre-specified by the user, or a target automatically selected by the control module 30, but the present invention is not limited thereto; the control module 30 calculates the focus data of the optical lens according to the target in the frame image, wherein the focus data can include the positions of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the eighth lens L8, the ninth lens L9, and the tenth lens L10 on the optical axis OA; thereafter, the driving module 50 drives the optical lens OL to focus according to the focus data, so that the first lens L1 to the tenth lens L10 are respectively moved to their respective focus positions according to the focus data. In a specific embodiment, the optical lens OL continuously captures images, the control module 30 continuously updates the focus data according to the latest image, and the driving module 50 continuously drives the optical lens OL to the focus position with the updated focus data.

[0065] It can be seen from the above embodiments that the optical lens proposed in the present invention can have the characteristics of being light and thin, having a high zoom ratio, low distortion, and high imaging quality.

[0066] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An optical lens, characterized in that: From the object side to the image side, it is composed of the following lenses: a first lens having positive refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having negative refractive power; a sixth lens having positive refractive power; a seventh lens element having negative refractive power; an eighth lens having negative refractive power; a ninth lens element having positive refractive power; and a tenth lens having positive refractive power; Among them, the curvature radius of the object side surface of the lens closest to the object side is R1, the curvature radius of the image side surface of the lens closest to the object side is R2, the curvature radius of the object side surface of the tenth lens is R23, the curvature radius of the image side surface of the tenth lens is R24, and the optical lens satisfies at least one of the following conditions: 0≤|(R1-R2) / (R1+R2)|<1 and 0≤|(R23+R24) / (R23-R24)|≤0.

2.

2. An optical lens, characterized in that: From the object side to the image side, it is composed of the following lenses: a first lens group having positive refractive power, which is composed of a first lens and a second lens in order from the object side to the image side, wherein the first lens has positive refractive power and the second lens has positive refractive power; a second lens group having negative refractive power, which is composed of a third lens, a fourth lens and a fifth lens in order from the object side to the image side, wherein the third lens has positive refractive power, the fourth lens has negative refractive power, and the fifth lens has negative refractive power; a third lens group having positive refractive power, which is composed of a sixth lens and a seventh lens in order from the object side to the image side, wherein the sixth lens has positive refractive power and the seventh lens has negative refractive power; and A fourth lens group has positive refractive power and is composed of an eighth lens, a ninth lens and a tenth lens in sequence from the object side to the image side. The eighth lens has negative refractive power, the ninth lens has positive refractive power, and the tenth lens has positive refractive power.

3. The optical lens according to claim 2, wherein: The effective focal length of the first lens group is FG1, the effective focal length of the second lens group is FG2, and the optical lens satisfies 1.2≤|FG1 / FG2|≤2.

5.

4. The optical lens according to claim 2, characterized in that: The radius of curvature of the object-side surface of the lens closest to the object side is R1, the radius of curvature of the image-side surface of the lens closest to the object side is R2, the radius of curvature of the object-side surface of the tenth lens is R23, the radius of curvature of the image-side surface of the tenth lens is R24, and the optical lens satisfies at least one of the following conditions: 0≤|(R1-R2) / (R1+R2)|<1 and 0≤|(R23+R24) / (R23-R24)|≤0.

2.

5. An optical lens, characterized in that: From the object side to the image side, it is composed of the following lenses: a first lens having positive refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having negative refractive power; a sixth lens having positive refractive power; a seventh lens element having negative refractive power; an eighth lens having negative refractive power; a ninth lens element having positive refractive power; and a tenth lens having positive refractive power; Wherein, at least one of the first lens and the sixth lens is a cemented lens; and The radius of curvature of the object-side surface of the lens closest to the object side is R1, the radius of curvature of the image-side surface of the lens closest to the object side is R2, the radius of curvature of the object-side surface of the tenth lens is R23, the radius of curvature of the image-side surface of the tenth lens is R24, and the optical lens satisfies at least one of the following conditions: 0≤|(R1-R2) / (R1+R2)|<1 and 0≤|(R23+R24) / (R23-R24)|≤0.

2.

6. The optical lens according to claim 1, 2 or 5, characterized in that: The total lens length of the optical lens is TTL, the total lens length of the optical lens at the telephoto end is TLt, the total lens length of the optical lens at the wide-angle end is TLw, and the optical lens satisfies at least one of the following conditions: 70 mm ≤ TTL ≤ 100 mm, TLt = TLw, and TLt = TLw = TTL.

7. The optical lens according to claim 1, 2 or 5, characterized in that: The total lens length of the optical lens is TTL, the effective focal length of the optical lens at the telephoto end is Ft, the effective focal length of the optical lens at the wide-angle end is Fw, and the optical lens satisfies at least one of the following conditions: 0.75≤TTL / Ft≤1.5, 2≤TTL / Fw≤3.5, 1.5≤Ft / Fw≤4, 80 mm≤Ft≤120 mm and 20 mm≤Fw≤45 mm.

8. The optical lens according to claim 1, 2 or 5, characterized in that: The imaging height of the optical lens is Y', the effective focal length of the optical lens at the wide-angle end is Fw, the effective focal length of the optical lens at the telephoto end is Ft, and the optical lens satisfies at least one of the following conditions: 5≤Fw / Y'≤12 and 20≤Ft / Y'≤35.

9. The optical lens according to claim 1, 2 or 5, characterized in that: The first lens includes a first sub-lens and a second sub-lens, the sixth lens includes a third sub-lens and a fourth sub-lens, the first sub-lens has a refractive index N11 and an Abbe number V11, the second sub-lens has a refractive index N12 and an Abbe number V12, the second lens has a refractive index N2 and an Abbe number V2, the third lens has a refractive index N3 and an Abbe number V3, the fourth lens has a refractive index N4 and an Abbe number V4, the fifth lens has a refractive index N5 and an Abbe number V5, the third sub-lens has a refractive index N61 and an Abbe number V61, the fourth sub-lens has a refractive index N62 and an Abbe number V62 , the seventh lens has a refractive index N7 and an Abbe number V7, the eighth lens has a refractive index N8 and an Abbe number V8, the ninth lens has a refractive index N9 and an Abbe number V9, the tenth lens has a refractive index N10 and an Abbe number V10, and the optical lens satisfies at least one of the following conditions: N11>N12, N11>N2, N3>N4, N3>N5, N61>N62, N61>N7, N8>N9, N8>N10, V12>V11, V2>V11, V5>V4, V5>V3, V62>V8, V7>V8, V10>V9 and V10>V8.

10. An electronic device, characterized in that: Include: The optical lens as claimed in claim 1, 2 or 5, which continuously captures a plurality of frames of images; a control module electrically connected to the optical lens and calculating a focus data of the optical lens according to a target object in the frame images; and A driving module is electrically connected to the control module and the optical lens, and drives the optical lens to focus according to the focusing data.

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