Imaging lens

Abstract

An imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens. The first lens has negative refractive power and comprises a convex surface facing the object side. The second, third, fourth, eighth, and ninth lenses have refractive power. The fifth lens has refractive power and comprises a convex surface facing the image side. The sixth lens has negative refractive power. The seventh lens has positive refractive power. The tenth lens has negative refractive power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are sequentially arranged from the object side to the image side along the optical axis.

Description

Technical Field

[0001] The present invention relates to an imaging lens. Background Art

[0002] In the development trend of current imaging lenses, in addition to continuously moving towards miniaturization, with different application requirements, they also need to have the characteristic of high resolution. Existing imaging lenses can no longer meet the current requirements, and a new architecture of imaging lens is needed to simultaneously meet the requirements of miniaturization and high resolution. Summary of the Invention

[0003] In view of this, the main object of the present invention is to provide an imaging lens with a shorter overall lens length, higher resolution, but still having good optical performance.

[0004] The ten - lens imaging lens of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence along the optical axis from the object side to the image side.

[0005] In an embodiment of the present invention, the first lens has a negative refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power. The eighth lens has a refractive power. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional features or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0006] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power and includes a concave surface facing the object side. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power. The eighth lens has a refractive power. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional features or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0007] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power and includes a convex surface facing the image side. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power. The eighth lens has a refractive power. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional characteristics or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0008] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power. The fourth lens has a refractive power and includes a convex surface facing the image side. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power. The eighth lens has a refractive power. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional characteristics or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0009] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power and includes a concave surface facing the image side. The seventh lens has a positive refractive power. The eighth lens has a refractive power. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional characteristics or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0010] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power and includes a convex surface facing the image side. The eighth lens has a refractive power. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional characteristics or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0011] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power. The eighth lens has a refractive power and includes a convex surface facing the image side. The ninth lens has a refractive power. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional features or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0012] In another embodiment of the present invention, the first lens has a refractive power and includes a convex surface facing the object side. The second lens has a refractive power. The third lens has a refractive power. The fourth lens has a refractive power. The fifth lens has a refractive power and includes a convex surface facing the image side. The sixth lens has a negative refractive power. The seventh lens has a positive refractive power. The eighth lens has a refractive power. The ninth lens has a refractive power and includes a convex surface facing the image side. The tenth lens has a negative refractive power. When the imaging lens of the present invention satisfies the above characteristics and does not require other additional features or conditions, the basic functions of the imaging lens of the present invention can be achieved.

[0013] Wherein the second lens is a meniscus lens and may further include a concave surface facing the image side, and the tenth lens is a meniscus lens and may further include a convex surface facing the image side.

[0014] Wherein the second lens is a biconvex lens and may further include another convex surface facing the image side, and the tenth lens is a biconcave lens and may further include another concave surface facing the image side.

[0015] The imaging lens of the present invention may further include an aperture disposed between the fifth lens and the sixth lens, and the imaging lens satisfies at least one of the following conditions: 94≤Vd1+Vd2≤100; -34≤Vd3-Vd4≤-13; -1≤f6 / f7≤-0.3; 6.5≤︱R22 / R31︱≤8.5; 5.5≤R92 / R101≤22; 0.73≤(R11-R12) / (R11+R12)≤0.82; 36.35≤(R11-R12) / T1≤48.11; -12.66≤R32 / T3≤-7.83; 15.11≤TTL / T12≤19.85; 282.35≤TTL / T78≤352.59; where f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, Vd1 is the Abbe number of the first lens, Vd2 is the Abbe number of the second lens, Vd3 is the Abbe number of the third lens, Vd4 is the Abbe number of the fourth lens, TTL is the distance on the optical axis from the object side of the first lens to the imaging surface, R11 is the curvature radius of the object side of the first lens, R12 is the curvature radius of the image side of the first lens, R22 is the curvature radius of the image side of the second lens, R31 is the curvature radius of the object side of the third lens, R32 is the curvature radius of the image side of the third lens, R92 is the curvature radius of the image side of the ninth lens, R101 is the curvature radius of the object side of the tenth lens, T12 is the air distance on the optical axis from the image side of the first lens to the object side of the second lens, T78 is the air distance on the optical axis from the image side of the seventh lens to the object side of the eighth lens, T1 is the distance on the optical axis from the object side of the first lens to the image side of the first lens, and T3 is the distance on the optical axis from the object side of the third lens to the image side of the third lens.

[0016] The imaging lens of the present invention has a shorter overall lens length and higher resolution, but still has good optical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following specifically provides preferred embodiments and detailed descriptions in conjunction with the accompanying drawings.

[0018] Figure 1 It is a lens configuration and optical path schematic diagram of the first embodiment of the imaging lens according to the present invention.

[0019] Figure 2 、 3, 4, 5 are respectively the field curvature diagram, distortion diagram, Y field modulation transfer function diagram, and through focus modulation transfer function diagram of the first embodiment of the imaging lens according to the present invention.

[0020] Figure 6 is a schematic diagram of the lens configuration and optical path of the second embodiment of the imaging lens according to the present invention.

[0021] Figure 7 , 8 , 9, 10 are respectively the field curvature diagram, distortion diagram, Y field modulation transfer function diagram, and through focus modulation transfer function diagram of the second embodiment of the imaging lens according to the present invention.

[0022] Figure 11 is a schematic diagram of the lens configuration and optical path of the third embodiment of the imaging lens according to the present invention.

[0023] Figure 12 , 13 , 14, 15 are respectively the field curvature diagram, distortion diagram, Y field modulation transfer function diagram, and through focus modulation transfer function diagram of the third embodiment of the imaging lens according to the present invention. Detailed Embodiments

[0024] The present invention provides an imaging lens, comprising: a first lens having a negative refractive power, the first lens including a convex surface facing the object side; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having a negative refractive power; a seventh lens having a positive refractive power; an eighth lens having a refractive power; a ninth lens having a refractive power; and a tenth lens having a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0025] The present invention provides another imaging lens, comprising: a first lens having refractive power, the first lens including a convex surface facing the object side; a second lens having refractive power; a third lens having refractive power, the third lens including a concave surface facing the object side; a fourth lens having refractive power; a fifth lens having refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having negative refractive power; a seventh lens having positive refractive power; an eighth lens having refractive power; a ninth lens having refractive power; and a tenth lens having negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0026] The present invention provides yet another imaging lens, comprising: a first lens having refractive power, the first lens including a convex surface facing the object side; a second lens having refractive power; a third lens having refractive power, the third lens including a convex surface facing the image side; a fourth lens having refractive power; a fifth lens having refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having negative refractive power; a seventh lens having positive refractive power; an eighth lens having refractive power; a ninth lens having refractive power; and a tenth lens having negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0027] The present invention provides another imaging lens, comprising: a first lens having refractive power, the first lens including a convex surface facing the object side; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power, the fourth lens including a convex surface facing the image side; a fifth lens having refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having negative refractive power; a seventh lens having positive refractive power; an eighth lens having refractive power; a ninth lens having refractive power; and a tenth lens having negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0028] The present invention provides another imaging lens, comprising: a first lens having a refractive power, the first lens including a convex surface facing the object side; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having a negative refractive power, the sixth lens including a concave surface facing the image side; a seventh lens having a positive refractive power; an eighth lens having a refractive power; a ninth lens having a refractive power; and a tenth lens having a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0029] The present invention provides another imaging lens, comprising: a first lens having a refractive power, the first lens including a convex surface facing the object side; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having a negative refractive power; a seventh lens having a positive refractive power, the seventh lens including a convex surface facing the image side; an eighth lens having a refractive power; a ninth lens having a refractive power; and a tenth lens having a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0030] The present invention provides another imaging lens, comprising: a first lens having a refractive power, the first lens including a convex surface facing the object side; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having a negative refractive power; a seventh lens having a positive refractive power; an eighth lens having a refractive power, the eighth lens including a convex surface facing the image side; a ninth lens having a refractive power; and a tenth lens having a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are arranged in sequence along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0031] The present invention provides another imaging lens, comprising: a first lens having a refractive power, the first lens including a convex surface facing the object side; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power, the fifth lens including a convex surface facing the image side; a sixth lens having a negative refractive power; a seventh lens having a positive refractive power; an eighth lens having a refractive power; a ninth lens having a refractive power, the ninth lens including a convex surface facing the image side; and a tenth lens having a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens and the tenth lens are sequentially arranged along the optical axis from the object side to the image side. When the imaging lens of the present invention satisfies the above characteristics, it is a preferred embodiment of the present invention.

[0032] Please refer to Table 1, Table 2, Table 4, Table 5, Table 7 and Table 8 below. Among them, Table 1, Table 4 and Table 7 are the relevant parameter tables of each lens of the first to third embodiments of the imaging lens according to the present invention, and Table 2, Table 5 and Table 8 are the relevant parameter tables of the aspherical surfaces of the aspherical lenses in Table 1, Table 4 and Table 7 respectively. In the following embodiments, the aspherical surface sag z of the aspherical lens is obtained by the following formula: z = ch 2 / {1 + [1 - (k + 1)c 2 h 2 1 / 2}+Ah 4 +Bh 6 +Ch 8 +Dh 10 +Eh 12 +Fh 14 +Gh 16 +Hh 18 ,where: c is the curvature, h is the perpendicular distance from any point on the lens surface to the optical axis, k is the conic constant, and A to H are the aspherical coefficients. The aspherical coefficients can be expressed in scientific notation. For example, 2E-03 represents 2×10 -3 .

[0033] Figure 1 、 6 、11 are the lens configurations and optical path schematic diagrams of the first, second and third embodiments of the imaging lens according to the present invention respectively. Among them, the first lenses L11, L21, L31 are meniscus lenses having negative refractive powers, their object sides S11, S21, S31 are convex surfaces, their image sides S12, S22, S32 are concave surfaces, and both the object sides S11, S21, S31 and the image sides S12, S22, S32 are aspherical surfaces.

[0034] ​The second lenses L12, L22, and L32 have positive refractive powers, and their object sides S13, S23, and S33 are convex surfaces. Both the object sides S13, S23, S33 and the image sides S14, S24, and S34 are spherical surfaces.

[0035] The third lenses L13, L23, and L33 are meniscus lenses with negative refractive powers. Their object sides S15, S25, and S35 are concave surfaces, and their image sides S16, S26, and S36 are convex surfaces. Both the object sides S15, S25, S35 and the image sides S16, S26, S36 are spherical surfaces.

[0036] The fourth lenses L14, L24, and L34 are biconvex lenses with positive refractive powers. Their object sides S17, S27, and S37 are convex surfaces, and their image sides S18, S28, and S38 are convex surfaces. Both the object sides S17, S27, S37 and the image sides S18, S28, S38 are spherical surfaces.

[0037] The fifth lenses L15, L25, and L35 are meniscus lenses with positive refractive powers. Their object sides S19, S29, and S39 are concave surfaces, and their image sides S110, S210, and S310 are convex surfaces. Both the object sides S19, S29, S39 and the image sides S110, S210, S310 are spherical surfaces.

[0038] The sixth lenses L16, L26, and L36 are biconcave lenses with negative refractive powers. Their object sides S112, S212, and S312 are concave surfaces, and their image sides S113, S213, and S313 are concave surfaces. Both the object sides S112, S212, S312 and the image sides S113, S213, S313 are spherical surfaces.

[0039] The seventh lenses L17, L27, and L37 are meniscus lenses with positive refractive powers. Their object sides S114, S214, and S314 are concave surfaces, and their image sides S115, S215, and S315 are convex surfaces. Both the object sides S114, S214, S314 and the image sides S115, S215, S315 are spherical surfaces.

[0040] The eighth lenses L18, L28, and L38 are biconvex lenses with positive refractive powers. Their object sides S116, S216, and S316 are convex surfaces, and their image sides S117, S217, and S317 are convex surfaces. Both the object sides S116, S216, S316 and the image sides S117, S217, S317 are spherical surfaces.

[0041] The ninth lenses L19, L29, and L39 are biconvex lenses with positive refractive power. Their object sides S118, S218, S318 are convex surfaces, and their image sides S119, S219, S319 are convex surfaces. The object sides S118, S218, S318 and the image sides S119, S219, S319 are all spherical surfaces.

[0042] The tenth lenses L110, L210, and L310 have negative refractive power. Their object sides S120, S220, S320 are concave surfaces, and the object sides S120, S220, S320 and the image sides S121, S221, S321 are all spherical surfaces.

[0043] In addition, the imaging lenses 1, 2, and 3 satisfy at least one of the following conditions (1) to (10):

[0044] 94 ≤ Vd1+Vd2 ≤ 100; (1)

[0045] -34 ≤ Vd3-Vd4 ≤ -13; (2)

[0046] -1 ≤ f6 / f7 ≤ -0.3; (3)

[0047] 6.5 ≤︱R22 / R31︱≤ 8.5; (4)

[0048] 5.5 ≤ R92 / R101 ≤ 22; (5)

[0049] 0.73 ≤ (R11-R12) / (R11+R12) ≤ 0.82; (6)

[0050] 36.35 ≤ (R11-R12) / T1 ≤ 48.11; (7)

[0051] -12.66 ≤ R32 / T3 ≤ -7.83; (8)

[0052] 15.11 ≤ TTL / T12 ≤ 19.85; (9)

[0053] 282.35 ≤ TTL / T78 ≤ 352.59; (10)

[0054] Among them, f6 is the effective focal length of the sixth lenses L16, L26, and L36 in the first to third embodiments, f7 is the effective focal length of the seventh lenses L17, L27, and L37 in the first to third embodiments, Vd1 is the Abbe number of the first lenses L11, L21, and L31 in the first to third embodiments, Vd2 is the Abbe number of the second lenses L12, L22, and L32 in the first to third embodiments, Vd3 is the Abbe number of the third lenses L13, L23, and L33 in the first to third embodiments, Vd4 is the Abbe number of the fourth lenses L14, L24, and L34 in the first to third embodiments, TTL is the distance on the optical axes OA1, OA2, and OA3 from the object sides S11, S21, and S31 of the first lenses L11, L21, and L31 to the imaging surfaces IMA1, IMA2, and IMA3 in the first to third embodiments, R11 is the curvature radius of the object sides S11, S21, and S31 of the first lenses L11, L21, and L31 in the first to third embodiments, R12 is the curvature radius of the image sides S12, S22, and S32 of the first lenses L11, L21, and L31 in the first to third embodiments, R22 is the curvature radius of the image sides S14, S24, and S34 of the second lenses L12, L22, and L32 in the first to third embodiments, R31 is the curvature radius of the object sides S15, S25, and S35 of the third lenses L13, L23, and L33 in the first to third embodiments, R32 is the curvature radius of the image sides S16, S26, and S36 of the third lenses L13, L23, and L33 in the first to third embodiments, R92 is the curvature radius of the image sides S119, S219, and S319 of the ninth lenses L19, L29, and L39 in the first to third embodiments, R101 is the curvature radius of the object sides S120, S220, and S320 of the tenth lenses L110, L210, and L310 in the first to third embodiments, T12 is the air distance on the optical axes OA1, OA2, and OA3 from the image sides S12, S22, and S32 of the first lenses L11, L21, and L31 to the object sides S13, S23, and S33 of the second lenses L12, L22, and L32 in the first to third embodiments, T78 is the air distance on the optical axes OA1, OA2, and OA3 from the image sides S115, S215, and S315 of the seventh lenses L17, L27, and L37 to the object sides S116, S216, and S316 of the eighth lenses L18, L28, and L38 in the first to third embodiments, T1 is the distance on the optical axes OA1, OA2, and OA3 from the object sides S11, S21, and S31 of the first lenses L11, L21, and L31 to the image sides S12, S22, and S32 of the first lenses L11, L21, and L31 in the first to third embodiments,T3 is the distance between the object sides S15, S25, S35 of the third lenses L13, L23, L33 and the image sides S16, S26, S36 of the third lenses L13, L23, L33 on the optical axes OA1, OA2, OA3 in the first to third embodiments. This enables the imaging lenses 1, 2, and 3 to effectively reduce the total lens length, effectively improve the resolution, and effectively correct the aberration.

[0055] When the condition (1): 94 ≤ Vd1 + Vd2 ≤ 100 is satisfied, chromatic aberration can be effectively reduced and the resolution can be improved. When the condition (2): -34 ≤ Vd3 - Vd4 ≤ -13 is satisfied, the resolution can be effectively improved. When the condition (3): -1 ≤ f6 / f7 ≤ -0.3 is satisfied, chromatic aberration can be effectively reduced. When the condition (4): 6.5 ≤ |R22 / R31| ≤ 8.5 is satisfied, spherical aberration can be effectively reduced, field curvature can be reduced, and the resolution can be improved. When the condition (5): 5.5 ≤ R92 / R101 ≤ 22 is satisfied, field curvature can be effectively reduced. When the condition (6): 0.73 ≤ (R11 - R12) / (R11 + R12) ≤ 0.82 is satisfied, spherical aberration can be effectively reduced, field curvature can be reduced, and the resolution can be improved. When the condition (7): 36.35 ≤ (R11 - R12) / T1 ≤ 48.11 is satisfied, spherical aberration can be effectively reduced, field curvature can be reduced, and the resolution can be improved. When the condition (8): -12.66 ≤ R32 / T3 ≤ -7.83 is satisfied, spherical aberration can be effectively reduced, field curvature can be reduced, and the resolution can be improved. When the condition (9): 15.11 ≤ TTL / T12 ≤ 19.85 is satisfied, spherical aberration can be effectively reduced, field curvature can be reduced, and the resolution can be improved. When the condition (10): 282.35 ≤ TTL / T78 ≤ 352.59 is satisfied, spherical aberration can be effectively reduced, field curvature can be reduced, and the resolution can be improved.

[0056] A first embodiment of the imaging lens according to the present invention will now be described in detail. The imaging lens 1 sequentially includes a first lens L11, a second lens L12, a third lens L13, a fourth lens L14, a fifth lens L15, an aperture ST1, a sixth lens L16, a seventh lens L17, an eighth lens L18, a ninth lens L19, a tenth lens L110, a filter OF1, and a protective glass CG1 along the optical axis OA1 from the object side to the image side. During imaging, the light rays from the object side are finally imaged on the imaging surface IMA1. According to paragraphs 1 to 19 of the

Embodiment

[0057] Table 1 is Figure 1 the table of relevant parameters of each lens of the imaging lens 1 in

[0058] Table 1

[0059]

[0060]

[0061] Table 2 is the table of relevant parameters of the aspherical surfaces of the aspherical lenses in Table 1.

[0062] Table 2

[0063]

[0064] Table 3 is the relevant parameter values of the imaging lens 1 of the first embodiment and the calculated values corresponding to conditions (1) to (10). It can be seen from Table 3 that the imaging lens 1 of the first embodiment can meet the requirements of conditions (1) to (10).

[0065] Table 3

[0066] T1 1.10 mm T3 1.10 mm T12 2.00 mm T78 0.10 mm Vd1 + Vd2 94.89 Vd3 - Vd4 -13.18 f6 / f7 -0.61 ︱R22 / R31︱ 8.41 R92 / R101 11.87 (R11 - R12) / (R11 + R12) 0.79 (R11 - R12) / T1 37.54 R32 / T3 -8.05 TTL / T12 17.47 TTL / T78 349.36

[0067] In addition, the optical performance of the imaging lens 1 of the first embodiment can also meet the requirements. From Figure 2 it can be seen that the field curvature of the imaging lens 1 of the first embodiment is between -0.04 mm and 0.08 mm. From Figure 3 it can be seen that the distortion of the imaging lens 1 of the first embodiment is between -10% and 0%. From Figure 4 it can be seen that the value of the Y-field modulation transfer function of the imaging lens 1 of the first embodiment is between 0.36 and 0.74. From Figure 5 it can be seen that for the imaging lens 1 of the first embodiment, when the focus offset is between -0.05 mm and 0.05 mm, the value of the modulation transfer function is between 0.0 and 0.74. Obviously, the field curvature and distortion of the imaging lens 1 of the first embodiment can be effectively corrected, and the lens resolution and depth of focus can also meet the requirements, thereby obtaining better optical performance.

[0068] A second embodiment of the imaging lens according to the present invention will now be described in detail. The imaging lens 2 sequentially includes a first lens L21, a second lens L22, a third lens L23, a fourth lens L24, a fifth lens L25, an aperture ST2, a sixth lens L26, a seventh lens L27, an eighth lens L28, a ninth lens L29, a tenth lens L210, a filter OF2, and a protective glass CG2 along the optical axis OA2 from the object side to the image side. When imaging, the light from the object side is finally imaged on the imaging surface IMA2. According to paragraphs 1 to 19 of the

Embodiment

[0069] Table IV is Figure 6 the table of relevant parameters of each lens of the imaging lens 2 in

[0070] Table IV

[0071]

[0072] Table V is the table of relevant parameters of the aspherical surfaces of the aspherical lenses in Table IV.

[0073] Table V

[0074]

[0075]

[0076] Table VI is the table of relevant parameter values of the imaging lens 2 of the second embodiment and the calculated values corresponding to conditions (1) to (10). It can be seen from Table VI that the imaging lens 2 of the second embodiment can meet the requirements of conditions (1) to (10).

[0077] Table VI

[0078] T1 1.20 mm T3 0.82 mm T12 2.05 mm T78 0.11 mm Vd1 + Vd2 99.38 Vd3 - Vd4 -33.31 f6 / f7 -0.46 ︱R22 / R31︱ 7.44 R92 / R101 5.81 (R11 - R12) / (R11 + R12) 0.81 (R11 - R12) / T1 38.61 R32 / T3 -10.60 TTL / T12 15.30 TTL / T78 296.00

[0079] In addition, the optical performance of the imaging lens 2 of the second embodiment can also meet the requirements. From Figure 7 it can be seen that the field curvature of the imaging lens 2 of the second embodiment is between -0.03 mm and 0.08 mm. From Figure 8 it can be seen that the distortion of the imaging lens 2 of the second embodiment is between -10% and 0%. From Figure 9 it can be seen that the Y-field modulation transfer function value of the imaging lens 2 of the second embodiment is between 0.35 and 0.76. From Figure 10 it can be seen that for the imaging lens 2 of the second embodiment, when the focus offset is between -0.05 mm and 0.05 mm, the modulation transfer function value is between 0.0 and 0.77. Obviously, the field curvature and distortion of the imaging lens 2 of the second embodiment can be effectively corrected, and the lens resolution and depth of focus can also meet the requirements, thus obtaining better optical performance.

[0080] Now, a third embodiment of the imaging lens of the present invention will be described in detail. The imaging lens 3 sequentially includes, from the object side to the image side along the optical axis OA3, a first lens L31, a second lens L32, a third lens L33, a fourth lens L34, a fifth lens L35, an aperture ST3, a sixth lens L36, a seventh lens L37, an eighth lens L38, a ninth lens L39, a tenth lens L310, a filter OF3, and a protective glass CG3. During imaging, the light rays from the object side are finally imaged on the imaging surface IMA3. According to paragraphs 1 to 19 of the

Embodiment

[0081] Table VII

[0082]

[0083] Table VIII is the table of relevant parameters of the aspherical surfaces of the aspherical lenses in Table VII.

[0084] Table VIII

[0085]

[0086] Table IX is the table of relevant parameter values of the imaging lens 3 of the third embodiment and their calculated values corresponding to conditions (1) to (10). It can be seen from Table IX that the imaging lens 3 of the third embodiment can meet the requirements of conditions (1) to (10).

[0087] Table IX

[0088] T1 1.10 mm T3 0.70 mm T12 1.60 mm T78 0.10 mm Vd1 + Vd2 94.89 Vd3 - Vd4 -13.18 f6 / f7 -0.58 ︱R22 / R31︱ 6.67 R92 / R101 21.77 (R11 - R12) / (R11 + R12) 0.74 (R11 - R12) / T1 27.38 R32 / T3 -12.44 TTL / T12 19.63 TTL / T78 314.08

[0089] In addition, the optical performance of the imaging lens 3 of the third embodiment can also meet the requirements. From Figure 12 it can be seen that the field curvature of the imaging lens 3 of the third embodiment is between -0.05 mm and 0.07 mm. From Figure 13 it can be seen that the distortion of the imaging lens 3 of the third embodiment is between -10% and 0%. From Figure 14 it can be seen that the Y-field modulation transfer function value of the imaging lens 3 of the third embodiment is between 0.27 and 0.77. From Figure 15It can be seen that for the imaging lens 3 of the third embodiment, when the focus offset is between -0.05 mm and 0.05 mm, the modulation transfer function value is between 0.0 and 0.76. Obviously, the field curvature and distortion of the imaging lens 3 of the third embodiment can be effectively corrected, and the lens resolution and depth of focus can also meet the requirements, thereby obtaining better optical performance.

[0090] Although the present invention has been disclosed above in a preferred embodiment, it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined by the claims.

Claims

1. An imaging lens, characterized in that, Comprising: The first lens has a negative refractive power, and the first lens includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power; The fourth lens has a refractive power; The fifth lens has a refractive power, and the fifth lens includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power; The eighth lens has a refractive power; The ninth lens has a refractive power; And The tenth lens has a negative refractive power; Wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side.

2. An imaging lens, characterized in that, Comprising: The first lens has a refractive power, and the first lens includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power, and the third lens includes a concave surface facing the object side; The fourth lens has a refractive power; The fifth lens has a refractive power, and the fifth lens includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power; The eighth lens has a refractive power; The ninth lens has a refractive power; And The tenth lens has a negative refractive power; Wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side.

3. An imaging lens, characterized in that, Comprising: The first lens has a refractive power, and the first lens includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power, and the third lens includes a convex surface facing the image side; The fourth lens has a refractive power; The fifth lens has a refractive power, and the fifth lens includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power; The eighth lens has a refractive power; The ninth lens has a refractive power; And The tenth lens has a negative refractive power; Wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side.

4. An imaging lens, characterized in that, Comprising: The first lens has a refractive power, and the first lens includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power; The fourth lens has a refractive power, and the fourth lens includes a convex surface facing the image side; The fifth lens has a refractive power, and the fifth lens includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power; The eighth lens has a refractive power; The ninth lens has a refractive power; And The tenth lens has a negative refractive power; Wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in sequence along the optical axis from the object side to the image side.

5. An imaging lens, characterized in that, Comprising: The first lens has a refractive power, and the first lens includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power; The fourth lens has a refractive power; The fifth lens has a refractive power, and the fifth lens includes a convex surface facing the image side; The sixth lens has a negative refractive power and includes a concave surface facing the image side; The seventh lens has a positive refractive power; The eighth lens has a refractive power; The ninth lens has a refractive power; and The tenth lens has a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in order along the optical axis from the object side to the image side.

6. An imaging lens, characterized in that, Comprising: The first lens has a refractive power and includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power; The fourth lens has a refractive power; The fifth lens has a refractive power and includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power and includes a convex surface facing the image side; The eighth lens has a refractive power; The ninth lens has a refractive power; and The tenth lens has a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in order along the optical axis from the object side to the image side.

7. An imaging lens, characterized in that, Comprising: The first lens has a refractive power and includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power; The fourth lens has a refractive power; The fifth lens has a refractive power and includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power; The eighth lens has a refractive power and includes a convex surface facing the image side; The ninth lens has a refractive power; and The tenth lens has a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in order along the optical axis from the object side to the image side.

8. An imaging lens, characterized in that, Comprising: The first lens has a refractive power and includes a convex surface facing the object side; The second lens has a refractive power; The third lens has a refractive power; The fourth lens has a refractive power; The fifth lens has a refractive power and includes a convex surface facing the image side; The sixth lens has a negative refractive power; The seventh lens has a positive refractive power; The eighth lens has a refractive power; The ninth lens has a refractive power and includes a convex surface facing the image side; and The tenth lens has a negative refractive power; wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in order along the optical axis from the object side to the image side.

9. The imaging lens according to any one of claims 1 to 8, characterized in that: The first lens is a meniscus lens with a negative refractive power and includes a concave surface facing the image side; The second lens has a positive refractive power and includes a convex surface facing the object side; The third lens is a meniscus lens with a negative refractive power and includes a concave surface facing the object side and a convex surface facing the image side; The fourth lens is a biconvex lens with a positive refractive power and includes a convex surface facing the object side and another convex surface facing the image side; The fifth lens is a meniscus lens with positive refractive power and further includes a concave surface facing the object side; The sixth lens is a biconcave lens and includes a concave surface facing the object side and another concave surface facing the image side; The seventh lens is a meniscus lens and includes a concave surface facing the object side and a convex surface facing the image side; The eighth lens is a biconvex lens with positive refractive power and includes a convex surface facing the object side and another convex surface facing the image side; The ninth lens is a biconvex lens with positive refractive power and includes a convex surface facing the object side and another convex surface facing the image side; and The tenth lens includes a concave surface facing the object side.

10. The imaging lens according to claim 9, wherein: The second lens is a meniscus lens and further includes a concave surface facing the image side; and The tenth lens is a meniscus lens and further includes a convex surface facing the image side.

11. The imaging lens according to claim 9, wherein: The second lens is a biconvex lens and further includes another convex surface facing the image side; and The tenth lens is a biconcave lens and further includes another concave surface facing the image side.

12. The imaging lens according to any one of claims 1 to 8, wherein, Further includes an aperture disposed between the fifth lens and the sixth lens, and the imaging lens satisfies at least one of the following conditions: 94≤Vd1+Vd2≤100; -34≤Vd3-Vd4≤-13; -1≤f6 / f7≤-0.3; 6.5≤︱R22 / R31︱≤8.5; 5.5≤R92 / R101≤22; 0.73≤(R11-R12) / (R11+R12)≤0.82; 36.35≤(R11-R12) / T1≤48.11; -12.66≤R32 / T3≤-7.83; 15.11≤TTL / T12≤19.85; 282.35≤TTL / T78≤352.59; Wherein, f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, Vd1 is the Abbe number of the first lens, Vd2 is the Abbe number of the second lens, Vd3 is the Abbe number of the third lens, Vd4 is the Abbe number of the fourth lens, TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface, R11 is the curvature radius of the object side surface of the first lens, R12 is the curvature radius of the image side surface of the first lens, R22 is the curvature radius of the image side surface of the second lens, R31 is the curvature radius of the object side surface of the third lens, R32 is the curvature radius of the image side surface of the third lens, R92 is the curvature radius of the image side surface of the ninth lens, R101 is the curvature radius of the object side surface of the tenth lens, T12 is the air spacing on the optical axis from the image side surface of the first lens to the object side surface of the second lens, T78 is the air spacing on the optical axis from the image side surface of the seventh lens to the object side surface of the eighth lens, T1 is the distance on the optical axis from the object side surface of the first lens to the image side surface of the first lens, and T3 is the distance on the optical axis from the object side surface of the third lens to the image side surface of the third lens.

Images