Imaging lens assembly, camera module, and imaging device

Abstract

An imaging lens assembly (21) comprising, in order from an object side: a first lens (L1) having positive refractive power and convex on the object side, a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5) having positive refractive power, a sixth lens (L6), a seventh lens (L7), and an eighth lens (L8) having negative refractive power and concave on the object side surface near the optical axis, and an aperture (3) disposed closer to the object than at least one of the first to eighth lenses (L1, L2, L3, L4, L5, L6, L7, L8), wherein at least one of the lenses disposed closer to the image than the aperture (3) has an aspherical surface that is non-rotationally symmetric, and the imaging lens assembly (21) is configured to satisfy: Fno < 2.2, HFOV < 45°, νd1 > 45, νd6 < 40, νd1 - νd2 > 10.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an imaging lens assembly, a camera module, and an imaging device, and particularly relates to an imaging lens assembly, a camera module, and an imaging device that are small in size and have good optical performance. BACKGROUND

[0002] In recent years, portable imaging devices such as mobile phones and digital cameras are being widely used. With the miniaturization of imaging devices in recent years, imaging lens assemblies mounted on such imaging devices also need to be reduced in size. In addition, there is an increasing demand to increase the amount of information of imaging data by expanding the angle of view when taking, for example, a snapshot, and to create a sense of space and atmosphere. In addition, there is also an increasing demand to improve image quality by using a larger image sensor.

[0003] In order to meet these demands, it is necessary to mount a wide-angle lens corresponding to high image quality to a small digital device such as a mobile phone or a motion camera.

[0004] However, with conventional wide-angle lenses, it is difficult to shorten the total length of the imaging lens assembly while correcting aberrations.

[0005] Therefore, from the perspective of miniaturization, there is a need to improve conventional imaging lens assemblies. SUMMARY

[0006] The present disclosure aims to solve at least one of the above technical problems. Therefore, the present disclosure needs to provide an imaging lens, a camera module, and an imaging device.

[0007] According to the present disclosure, an imaging lens assembly includes, in order from an object side:

[0008] a first lens having positive refractive power and convex on the object side;

[0009] a second lens;

[0010] a third lens;

[0011] a fourth lens;

[0012] a fifth lens having positive refractive power;

[0013] a sixth lens;

[0014] a seventh lens; and

[0015] an eighth lens having negative refractive power and concave near the optical axis on the object side surface;

[0016] The imaging lens assembly includes a stop. The stop is disposed closer to the object than at least one of the first lens to the eighth lens,

[0017] wherein at least one of the lenses disposed closer to the image than the aperture stop has an aspherical surface that is non-rotationally symmetric, the imaging lens assembly is configured to satisfy:

[0018] Fno < 2.2,

[0019] HFOV < 45°,

[0020] vd1 > 45,

[0021] vd6 < 40,

[0022] vd1 - vd2 > 10,

[0023] wherein Fno is an F number of the imaging lens assembly, HFOV is a half view angle of the imaging lens assembly corresponding to a diagonal length of an effective pixel area of an imaging surface, vd1 is an Abbe number of the first lens, vd2 is an Abbe number of the second lens, and vd6 is an Abbe number of the sixth lens.

[0024] According to the present disclosure, a camera module includes:

[0025] an imaging lens assembly; and

[0026] an image sensor including an imaging surface.

[0027] According to the present disclosure, an imaging apparatus includes a camera module and a housing accommodating the camera module. BRIEF DESCRIPTION OF DRAWINGS

[0028] These and / or other aspects and advantages of embodiments of the present disclosure will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings. In the drawings:

[0029] Figure 1 is a schematic diagram illustrating a schematic configuration of an imaging apparatus according to the present disclosure;

[0030] Figure 2 is a configuration diagram of a camera module according to a first example of the present disclosure;

[0031] Figure 3 is an aberration diagram of the camera module according to the first example of the present disclosure;

[0032] Figure 4 is an RMS stop radius diagram of the camera module according to the first example of the present disclosure;

[0033] Figure 5 is a configuration diagram of a camera module according to a second example of the present disclosure;

[0034] Figure 6Aberration map of a camera module according to the second example of the present disclosure;

[0035] Figure 7 RMS stop radius map of a camera module according to the second example of the present disclosure;

[0036] Figure 8 Configuration map of a camera module according to the third example of the present disclosure;

[0037] Figure 9 Aberration map of a camera module according to the third example of the present disclosure;

[0038] Figure 10 RMS stop radius map of a camera module according to the third example of the present disclosure;

[0039] Figure 11 Configuration map of a camera module according to the fourth example of the present disclosure;

[0040] Figure 12 Aberration map of a camera module according to the fourth example of the present disclosure;

[0041] Figure 13 RMS stop radius map of a camera module according to the fourth example of the present disclosure;

[0042] Figure 14 Configuration map of a camera module according to the fifth example of the present disclosure;

[0043] Figure 15 Aberration map of a camera module according to the fifth example of the present disclosure;

[0044] Figure 16 RMS stop radius map of a camera module according to the fifth example of the present disclosure;

[0045] Figure 17 Configuration map of a camera module according to the sixth example of the present disclosure;

[0046] Figure 18 Aberration map of a camera module according to the sixth example of the present disclosure;

[0047] Figure 19 RMS stop radius map of a camera module according to the sixth example of the present disclosure;

[0048] Figure 20 Configuration map of a camera module according to the seventh example of the present disclosure;

[0049] Figure 21 Aberration map of a camera module according to the seventh example of the present disclosure;

[0050] Figure 22 RMS stop radius plot for a camera module according to the seventh example of the present disclosure;

[0051] Figure 23 Configuration plot for a camera module according to the eighth example of the present disclosure;

[0052] Figure 24 Aberration plot for a camera module according to the eighth example of the present disclosure;

[0053] Figure 25 RMS stop radius plot for a camera module according to the eighth example of the present disclosure;

[0054] Figure 26 Configuration plot for a camera module according to the ninth example of the present disclosure;

[0055] Figure 27 Aberration plot for a camera module according to the ninth example of the present disclosure;

[0056] Figure 28 RMS stop radius plot for a camera module according to the ninth example of the present disclosure;

[0057] Figure 29 Configuration plot for a camera module according to the tenth example of the present disclosure;

[0058] Figure 30 Aberration plot for a camera module according to the tenth example of the present disclosure;

[0059] Figure 31 RMS stop radius plot for a camera module according to the tenth example of the present disclosure;

[0060] Figure 32 Configuration plot for a camera module according to the eleventh example of the present disclosure;

[0061] Figure 33 Aberration plot for a camera module according to the eleventh example of the present disclosure;

[0062] Figure 34 RMS stop radius plot for a camera module according to the eleventh example of the present disclosure;

[0063] Figure 35 Configuration plot for a camera module according to the twelfth example of the present disclosure;

[0064] Figure 36 Aberration plot for a camera module according to the twelfth example of the present disclosure;

[0065] Figure 37is a configuration diagram of a camera module according to a twelfth example of the present disclosure;

[0066] Figure 38 is a configuration diagram of a camera module according to a thirteenth example of the present disclosure;

[0067] Figure 39 is an aberration diagram of a camera module according to the thirteenth example of the present disclosure;

[0068] Figure 40 is an RMS stop radius diagram of a camera module according to the thirteenth example of the present disclosure;

[0069] Figure 41 is a configuration diagram of a camera module according to a fourteenth example of the present disclosure;

[0070] Figure 42 is an aberration diagram of a camera module according to the fourteenth example of the present disclosure;

[0071] Figure 43 is an RMS stop radius diagram of a camera module according to the fourteenth example of the present disclosure;

[0072] Figure 44 is a configuration diagram of a camera module according to a fifteenth example of the present disclosure;

[0073] Figure 45 is an aberration diagram of a camera module according to the fifteenth example of the present disclosure;

[0074] Figure 46 is an RMS stop radius diagram of a camera module according to the fifteenth example of the present disclosure; DETAILED DESCRIPTION

[0075] Embodiments of the present disclosure will be described in detail, and examples of the embodiments will be shown in the accompanying drawings. Identical or similar elements and elements having identical or similar functions throughout the specification are denoted with the same reference numerals. The embodiments described herein with reference to the accompanying drawings are explanatory and are intended to explain the present disclosure, but should not be construed as limiting the present disclosure.

[0076] <SUMMARY OF THE DISCLOSURE>

[0077] First, a summary of the present disclosure will be described. For example, an imaging device 1 to which the present disclosure is applied is configured as shown in Figure 1 Note that the dotted line indicates an optical axis of the imaging device 1 (as below).

[0078] Figure 1The illustrated imaging device 1 includes a camera module 11, and a housing 12 that houses the camera module 11. The camera module 11 includes an imaging lens assembly 21, a filter 22, and an image sensor 23.

[0079] The imaging lens assembly 21 includes, for example, eight lenses and an aperture stop 3. The eight lenses are composed of a first lens to an eighth lens arranged in order from an object side. The aperture stop 3 is disposed closer to an object than an image side surface of the first lens. The imaging lens assembly 21 images incident light from the object side on an imaging surface S. The imaging lens assembly 21 is, for example, a wide-angle lens having an angle of less than 90 degrees. The eight lenses are held in a lens barrel, for example, and are configured to be integrally movable in a direction of an optical axis (z direction) by using an autofocus device such as a stepping motor or a voice coil motor. Figure 1 Since the imaging lens assembly 21 includes the eight lenses, the imaging lens assembly 21 can effectively apply a large-size image sensor 23. By effectively applying the large-size image sensor 23, it is possible to improve image quality of a captured image. Since the imaging lens assembly 21 includes the eight lenses, the imaging lens assembly 21 can effectively correct aberration. Since the aperture stop 3 is disposed closer to the object than the image side surface of the first lens, it is possible to expand an aperture diameter of the imaging lens assembly 21 while shortening a total length of the imaging lens assembly 21. By expanding the aperture diameter, it is possible to efficiently capture object light and obtain a bright image. Since the imaging lens assembly 21 has the wide-angle lens having an angle of less than 90 degrees, it is possible to shorten the total length of the imaging lens assembly 21 while mounting the large-size image sensor 23. The first lens can be made of glass or plastic to expand the aperture diameter.

[0080] The image sensor 23 is composed of a solid-state image sensor such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device), and has an imaging surface S that is an imaging surface of the imaging lens 21. The image sensor 23 is mounted on a circuit board 24.

[0081] The image sensor 23 receives incident light from an object (object side) through the imaging lens assembly 21 and the filter 22, photoelectrically converts the incident light, and outputs image data obtained by photoelectrically converting the incident light to a subsequent stage.

[0082] The filter 22 is disposed between the imaging lens assembly 21 and the image sensor 23. The filter 22 can be, for example, an infrared cut filter (IRCF) that cuts infrared light from light incident from the imaging lens assembly 21.

[0083] In the imaging lens assembly 21, the first lens has a positive refractive power and a convex surface facing the object side, the fifth lens has a positive refractive power, and the eighth lens has a negative refractive power and is concave near the optical axis on the object side surface. The imaging lens assembly 21 can further effectively correct aberrations by having such a combination of refractive powers.

[0084] In the imaging lens assembly 21, at least one lens disposed closer to the image than the aperture stop 3 has a non-rotationally symmetric aspherical surface. By virtue of the non-rotationally symmetric aspherical surface closer to the image than the aperture stop 3, the imaging lens assembly 21 can smoothly correct aberrations (e.g., distortion, astigmatism, and curvature, etc.) that occur due to shortening the total length of the imaging lens assembly. In other words, by virtue of the non-rotationally symmetric aspherical surface closer to the image than the aperture stop 3, the imaging lens assembly 21 can shorten the total length of the imaging lens assembly 21 while effectively correcting aberrations.

[0085] The non-rotationally symmetric aspherical surface can be symmetric with respect to an X-axis (refer to FIG. 2) orthogonal to the optical axis and a Y-axis (refer to FIG. 2) orthogonal to the X-axis and the optical axis, respectively. Figure 1 ) and the Y-axis (refer to Figure 1 ) orthogonal to the X-axis and the optical axis, respectively. The X-axis is, for example, an axis parallel to the long side of the image sensor 23. The Y-axis is, for example, an axis parallel to the short side of the image sensor 23. Since the non-rotationally symmetric aspherical surface is symmetric with respect to the X-axis and the Y-axis, respectively, the design of the aspherical surface applicable to the pixel area of the image sensor 23 can be simplified. This makes it easier to adjust the eccentricity between the surfaces during lens manufacturing, or to adjust the optical performance by rotating the lens during lens assembly.

[0086] The eighth lens disposed closest to the imaging surface S can have an aspherical surface shape with a cusp. If the eighth lens has an aspherical surface shape with a cusp, the back focal length of the imaging lens assembly 21 can be shortened. By shortening the back focal length, the total length of the imaging lens assembly 21 can be shortened. In order to shorten the back focal length, it is preferable that the image side surface of the eighth lens has an aspherical surface shape with a cusp.

[0087] In view of the molding of the lens, it is preferable that the aspherical lenses constituting the imaging lens assembly 21, in particular, the lenses having an aspherical surface shape with a cusp, are made of a plastic material. Furthermore, among the lenses constituting the imaging lens assembly 21, the lenses having a size smaller than or equal to a certain size can be lenses made of a plastic material, and the lenses having a size greater than the certain size can be lenses made of a glass material. This is because it is difficult to manufacture aspherical lenses or relatively small lenses using a material other than plastic.

[0088] By satisfying the following inequalities (1) to (5), the camera module 11 can enhance the optical performance while maintaining a small-size structure:

[0089] Fno < 2.2 (1)

[0090] HFOV < 45° (2)

[0091] vd1 > 45 (3)

[0092] vd6 < 40 (4)

[0093] vd1 - vd2 > 10 (5)

[0094] where Fno is an F number of the imaging lens assembly 21 (as below). HFOV is a half field of view (i.e., half angle of view) of the imaging lens assembly 21 (as below). The angle of view corresponds to a diagonal length of an effective pixel area of the imaging surface S (as below). vd1 is an Abbe number of the first lens (as below). vd2 is an Abbe number of the second lens (as below). vd6 is an Abbe number of the sixth lens (as below).

[0095] If the value of Fno is greater than or equal to 2.2 shown in inequality (1), the image is darkened due to a decrease in light intensity irradiated on the imaging surface S, and thus the image quality is poor when photographing in a dark place. In order to improve the image quality, Fno is more preferably less than or equal to 2.0.

[0096] If the value of HFOV is greater than or equal to 45 degrees shown in inequality (2), the focal length is short (specifically, less than 22 mm) and the angle of view is wide. In this case, it is necessary to provide, for example, a lens having a negative refractive power and being closest to the object as a structure of the lens. The imaging lens assembly 21 having such a structure is difficult to shorten the total length of the imaging lens assembly 21 while mounting a large-size image sensor 23.

[0097] If the value of vd1 is less than or equal to 45 shown in inequality (3), correction of the axial chromatic aberration is insufficient, and thus it is difficult to obtain good optical performance. The value of vd1 is more preferably greater than or equal to 50.

[0098] If the value of vd6 is greater than or equal to 40 shown in inequality (4), correction of the axial chromatic aberration is insufficient, and thus it is difficult to obtain good optical performance. The value of vd6 is more preferably less than or equal to 35 to correct the total chromatic aberration.

[0099] If the value of vd1 - vd2 is less than or equal to 10 shown in inequality (5), correction of the axial chromatic aberration by the first lens and the second lens is insufficient, thereby causing the optical performance to be deteriorated and the image quality to be decreased. In order to improve the image quality, the value of vd1 - vd2 is more preferably greater than or equal to 13.

[0100] By satisfying the following inequalities (6) to (8), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve the optical performance and the manufacturability:

[0101] 0.3 < F1 / FL < 4.3 (6)

[0102] 0.5 < |F8 / FL| < 1.1 (7)

[0103] 0.8 < F L1-L5 / FL < 1.4 (8)

[0104] where FL is the focal length of the imaging lens assembly (as is the case below). F1 is the focal length of the first lens (as is the case below). F8 is the focal length of the eighth lens (as is the case below). F L1-L5 is the combined focal length of the first lens to the fifth lens (as is the case below).

[0105] If the value of F1 / FL is less than or equal to 0.3 indicated in the inequality (6), since the refractive power of the first lens is large and the curvature of the lens surface of the first lens is large, high-order aberrations are generated, and the manufacturing sensitivity also increases, so the yield decreases. On the other hand, if the value of F1 / FL is greater than or equal to 4.3 indicated in the inequality (6), since the imaging lens assembly 21 does not condense light sufficiently, it is difficult to obtain a bright image. In order to maintain a balance between the optical performance, the manufacturability, and the brightness of the image (i.e., the lens aperture), the value of F1 / FL is more preferably about greater than or equal to 0.8 and less than or equal to 3.9.

[0106] If the value of |F8 / FL| is less than or equal to 0.5 indicated in the inequality (7), since the negative refractive power of the eighth lens is too large, the focal length and the total length of the imaging lens assembly 21 are long. On the other hand, if the value of |F8 / FL| is greater than or equal to 1.1 indicated in the inequality (7), since the negative refractive power of the eighth lens is small, it is difficult to obtain a sufficient flange back. In order to maintain a balance between the total length and the flange back of the imaging lens assembly 21, the value of |F8 / FL| is more preferably about greater than or equal to 0.6 and less than or equal to 1.0.

[0107] If the value of F L1-L5 / FL is less than or equal to 0.8 indicated in the inequality (8), since the positive refractive power of the lens on the object side is too large, the manufacturing sensitivity increases, so the yield decreases. On the other hand, if the value of F L1-L5 / FL is greater than or equal to 1.4 indicated in the inequality (8), since the positive refractive power of the lens on the object side is small, it is difficult to correct the spherical aberration and the axial chromatic aberration. In order to maintain a balance between the manufacturability and the optical performance, the value of F L1-L5The value of |F L6-L8 / F L1-L5 | is more preferably greater than or equal to 0.9 and less than or equal to 1.3.

[0108] By satisfying the following inequalities (9) and (10), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve optical performance and manufacturability.

[0109] 0.5 < |F L6-L8 / F L1-L5 | < 3.9 (9)

[0110] 2.5 < ∑|FL / F(i)| < 5.0 (10)

[0111] where F L6-L8 is the composite focal length of the sixth to eighth lenses (as is). F(i) is the focal length of the i-th lens (i is an integer between 1 and 8) (as is).

[0112] If the value of |F L6-L8 / F L1-L5 | is less than or equal to 0.5 as shown in inequality (9), the negative refractive power of the lens on the image side is too large, resulting in overcorrection of aberration, so it is difficult to obtain good optical performance. On the other hand, if the value of |F L6-L8 / F L1-L5 | is greater than or equal to 3.9 as shown in inequality (9), the positive refractive power of the lens on the object side is too large, resulting in insufficient correction of aberration, so it is difficult to obtain good optical performance. In order to improve optical performance, the value of |F L6-L8 / F L1-L5 | is more preferably greater than or equal to 1.0 and less than or equal to 3.3.

[0113] If the value of ∑|FL / F(i)| is less than or equal to 2.5 as shown in inequality (10), the refractive power of each lens is small, resulting in insufficient correction of aberration, and the total length of the imaging lens assembly 21 is long. On the other hand, if the value of ∑|FL / F(i)| is greater than or equal to 5.0 as shown in inequality (10), the refractive power of each lens is too large, resulting in increased manufacturing sensitivity of the imaging lens 21, so the yield is reduced. In order to maintain a balance between miniaturization, optical performance, and manufacturability of the imaging lens assembly 21, the value of ∑|FL / F(i)| is more preferably greater than or equal to 3.0 and less than or equal to 4.5.

[0114] By satisfying the following inequalities (11) and (12), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve optical performance.

[0115] 0.4 < D L6-L8 / ImgH < 1.0 (11)

[0116] 5 < TTL / D L6 < 28 (12)

[0117] where D L6-L8 is the length on the optical axis from the object side surface of the sixth lens to the image side surface of the eighth lens (same hereinafter). ImgH is half of the diagonal length of the effective pixel area of the imaging surface S of the imaging lens assembly 21 (i.e., the image height) (same hereinafter). TTL (Total Track Length) is the length on the optical axis from the object side surface of the first lens to the focal point of the imaging lens assembly 21 (same hereinafter). D L6 is the length on the optical axis from the object side surface of the sixth lens to the image side surface, i.e., the center thickness of the sixth lens (same hereinafter).

[0118] If the value of D L6-L8 / ImgH is less than or equal to 0.4 shown in inequality (11), it is difficult to correct aberration due to the steep angle of the screen edge light ray incident on the lens on the image side, and the transmittance of the lens is also reduced due to Fresnel reflection. On the other hand, if the value of D L6-L8 / ImgH is greater than or equal to 1.0 shown in inequality (11), it is difficult to shorten the total length of the imaging lens assembly 21 due to the too large thickness of the lens on the image side. In order to maintain the balance between the shortening of the total length of the imaging lens assembly 21 and the optical performance, the value of D L6-L8 / ImgH is more preferably greater than or equal to 0.5 and less than or equal to 0.9.

[0119] If the value of TTL / D L6 is less than or equal to 5 shown in inequality (12), or greater than or equal to 28, the balance of aberration on the screen edge region (e.g., the balance between comatic aberration and astigmatism) is lost, and thus it is difficult to correct the aberration. In order to maintain the balance of the optical performance, the value of TTL / D L6 is more preferably approximately greater than or equal to 9 and less than or equal to 24.

[0120] By satisfying the following inequalities (13) and (14), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve the optical performance.

[0121] 0 < (R3+R4) / (R3-R4) < 10.0 (13)

[0122] 0 < (R9+R10) / (R9-R10) < 3.5 (14)

[0123] where R3 is the curvature radius of the object side surface of the second lens (same below). R4 is the curvature radius of the image side surface of the second lens (same below). R9 is the curvature radius of the object side surface of the fifth lens (same below). R10 is the curvature radius of the image side surface of the fifth lens (same below).

[0124] If the value of (R3+R4) / (R3-R4) is less than or equal to 0 shown in inequality (13), the refractive power of the image side surface of the second lens is too small compared to the refractive power of the object side surface of the second lens. This makes it difficult to sufficiently refract the light ray in the positive direction of the Y axis, and thus the correction of aberration is insufficient, and the total length of the imaging lens assembly 21 is increased. On the other hand, if the value of (R3+R4) / (R3-R4) is greater than or equal to 10.0 shown in inequality (13), the surface curvatures of the object side and the image side of the second lens are small, and the shape of the object side surface of the second lens and the shape of the image side surface of the second lens are close. This makes it difficult to sufficiently correct the aberration using the second lens. In order to miniaturize the imaging lens assembly 21 and improve the optical performance, the value of (R3+R4) / (R3-R4) is more preferably greater than or equal to 1.5 and less than or equal to 9.0.

[0125] If the value of (R9+R10) / (R9-R10) is less than or equal to 0 shown in inequality (14), the refractive power of the image side surface of the fifth lens is too small compared to the refractive power of the object side surface of the fifth lens. This results in difficulty in sufficiently converging the screen edge light ray, and thus difficulty in sufficiently correcting the aberration. On the other hand, if the value of (R9+R10) / (R9-R10) is greater than or equal to 3.5 shown in inequality (14), the fifth lens does not sufficiently condense light due to the small surface curvatures of the object side and the image side of the fifth lens. In order to improve the optical performance, the value of (R9+R10) / (R9-R10) is more preferably greater than or equal to about 0.5 and less than or equal to 2.5.

[0126] By satisfying the following inequalities (15) to (17), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve the optical performance.

[0127] -16 < (R7+R8) / (R7-R8) < 2 (15)

[0128] -10 < (R11+R12) / (R11-R12) < 0 (16)

[0129] 0 < R13 / R14 < 4.0 (17)

[0130] where R7 is the curvature radius of the object side surface of the fourth lens (same below). R8 is the curvature radius of the image side surface of the fourth lens (same below). R11 is the curvature radius of the object side surface of the sixth lens (same below). R12 is the curvature radius of the image side surface of the sixth lens (same below). R13 is the curvature radius of the object side surface of the seventh lens (same below). R14 is the curvature radius of the image side surface of the seventh lens (same below).

[0131] If the value of (R7+R8) / (R7-R8) is greater than or equal to 2 as shown in inequality (15), the refractive power of the image side surface of the fourth lens is too large compared to the refractive power of the object side surface of the fourth lens, and thus the screen edge ray diverges insufficiently, resulting in difficulty in sufficiently correcting aberration. On the other hand, if the value of (R7+R8) / (R7-R8) is less than or equal to -16 as shown in inequality (15), the surface curvatures of the object side and the image side of the fourth lens are small, resulting in that the fourth lens cannot sufficiently perform aberration correction. In order to improve optical performance, the value of (R7+R8) / (R7-R8) is more preferably about greater than or equal to -14 and less than or equal to -1.

[0132] If the value of (R11+R12) / (R11-R12) is greater than or equal to 0 as shown in inequality (16), the refractive power of the sixth lens is too large, which is affected by the relationship between the shape of the object side surface of the sixth lens and the shape of the image side surface of the sixth lens. This makes the angle of the light rays incident on the object side and the image side surfaces of the sixth lens steep, and thus generates high-order aberration. On the other hand, if the value of (R11+R12) / (R11-R12) is less than or equal to -10 as shown in inequality (16), the surface curvatures of the object side and the image side of the sixth lens are small, resulting in that the convergence of the light rays is insufficient. In order to improve optical performance, the value of (R11+R12) / (R11-R12) is more preferably about greater than or equal to -8 and less than or equal to -1.

[0133] If the value of R13 / R14 is less than or equal to 0 as shown in inequality (17), since the refractive power of the seventh lens is too large, it results in that too large aberration is generated. On the other hand, if the value of R13 / R14 is greater than or equal to 4.0 as shown in inequality (17), since the curvature of the object side surface of the seventh lens is small, it results in that the convergence of the light rays is insufficient. In order to improve optical performance, the value of R13 / R14 is more preferably greater than or equal to 0.5 and less than or equal to 3.0.

[0134] By satisfying the following inequalities (18) to (21), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve optical performance.

[0135] Nd2 < 1.75 (18)

[0136] Nd4 < 1.75 (19)

[0137] Nd6 < 1.75 (20)

[0138] 200 < ∑vd(i) < 380 (21)

[0139] wherein Nd2 is the refractive index of the second lens at the d line (as is the same below). Nd4 is the refractive index of the fourth lens at the d line (as is the same below). Nd6 is the refractive index of the sixth lens at the d line (as is the same below). vd(i) is the Abbe number of the i-th lens (i is an integer between 1 and 8) (as is the same below).

[0140] If the value of Nd2 is greater than or equal to 1.75 shown in inequality (18), the difficulty of manufacturing the second lens increases due to the thin thickness of the second lens, the yield rate decreases, the Petzval sum is large and the field curvature is generated. In order to improve the manufacturability and optical performance, the value of Nd2 is more preferably less than or equal to 1.73.

[0141] If the value of Nd4 is greater than or equal to 1.75 shown in inequality (19), the difficulty of manufacturing the fourth lens increases due to the thin thickness of the fourth lens, the yield rate decreases. In order to improve the manufacturability, the value of Nd4 is more preferably less than or equal to 1.73.

[0142] If the value of Nd6 is greater than or equal to 1.75 shown in inequality (20), the difficulty of manufacturing the sixth lens increases due to the thin thickness of the sixth lens, the yield rate decreases. In order to improve the manufacturability, the value of Nd6 is more preferably less than or equal to 1.73.

[0143] If the value of ∑vd(i) is less than or equal to 200 shown in inequality (21) or greater than or equal to 380 shown in inequality (21), it is difficult to obtain good optical performance because it is difficult to sufficiently correct chromatic aberration. In order to improve the optical performance, the value of ∑vd(i) is more preferably greater than or equal to about 230 and less than or equal to 340.

[0144] By satisfying the following inequalities (22) to (24), the camera module 11 can more effectively miniaturize the imaging lens assembly 21 and improve the optical performance.

[0145] TTL / ImgH < 2.5 (22)

[0146] TTL / FL < 2.0 (23)

[0147] TTL / BFL < 15 (24)

[0148] BFL is the distance from the object side surface of the filter 22 to the imaging surface S, i.e., the back focal length (as below).

[0149] If the value of TTL / ImgH is greater than or equal to 2.5 shown in inequality (22), it is difficult to miniaturize the imaging lens assembly 21 because the total length of the imaging lens assembly 21 is too large. In order to maintain a balance between the miniaturization and optical performance of the imaging lens assembly 21, the value of TTL / ImgH is more preferably less than or equal to 2.0.

[0150] If the value of TTL / FL is greater than or equal to 2.0 shown in inequality (23), it is difficult to miniaturize the imaging lens assembly 21 because the total length of the imaging lens assembly 21 is too large. In order to miniaturize the imaging lens assembly 21, the value of TTL / FL is more preferably less than or equal to 1.5.

[0151] If the value of TTL / BFL is greater than or equal to 15 shown in inequality (24), the distance between the imaging lens assembly 21 and the image sensor 23 is short because the flange distance of the imaging lens assembly 21 is too short, thereby causing a risk of collision and image contamination between the imaging lens assembly 21 and the image sensor 23. In order to prevent the collision and image contamination between the imaging lens assembly 21 and the image sensor 23, the value of TTL / BFL is more preferably less than or equal to 14.

[0152] Such a camera module 11 including the imaging lens assembly 21 is suitable for compact digital devices (imaging device 1) such as mobile phones, wearable cameras, and surveillance cameras.

[0153] <Configuration Example of Camera Module>

[0154] Next, a more specific example to which the present disclosure is applied will be described. In the following example, the symbol "Li" indicates the serial number of the i-th lens in order from the object side toward the image side. For example, "L1" indicates the first lens, "LiR1" indicates the object side surface (i.e., the first surface) of the i-th lens, and "LiR2" indicates the image side surface (i.e., the second surface) of the i-th lens.

[0155] "R" indicates a central curvature radius value (mm). For "R", "E+i" indicates an exponential expression with 10 as the base, i.e., "10 i ". For example, "1.00E+18" indicates "1.00 x 10 18 ". Such an exponential expression is also applied to the aspherical coefficients described later.

[0156] "D" indicates a distance value (mm) between the i-th surface and the (i+1)-th surface on the optical axis.

[0157] “Nd” indicates the refractive index of the material of the optical element having the i-th surface at line d (wavelength 587.6 nm).

[0158] “vd” indicates the Abbe number of the material of the optical element with the i-th surface at line d.

[0159] “Fno” indicates the F number.

[0160] In the table below showing the focal length of each lens, "-" indicates a negative focal length, and no "-" indicates a positive focal length.

[0161] The imaging lens assembly 21 used in the following example includes a lens with rotational symmetry aspherical surface. The rotational symmetry aspherical shape of the lens is defined by the Qbfs polynomial shown in the following formula (25):

[0162] Z = C × r 2 / {1+[1-(1+K)×C 2 ×r 2 ] 1 / 2}+{(1-K×C 2 ×r 2 ) 1 / 2} / {[1-(1+K)×C 2 ×r 2 ] 1 / 2}×{μ 2 ×(1-μ 2 )×(∑QBn×Qn(μ 2 ))},

[0163] (n is an even number greater than or equal to 4) (25)

[0165] In formula (25), Z is the depth of the aspherical surface (mm). C is the paraxial curvature equal to 1 / R. r is the distance from the optical axis to the lens surface (X). 2 +Y 2 ) 1 / 2 (mm). μ is the value of (distance from the optical axis to the lens surface / normalized radius of the lens). K is the eccentricity (second-order aspherical coefficient), i.e., the cone coefficient. QBn are the nth-order Qbfs coefficients. Qn are the nth-order coefficients specific to the Qbfs polynomial.

[0166] It is known that Qn in Formula 25 is a coefficient that takes the following values ​​(partial excerpt).

[0167] Q1 = 1

[0168] Q2 = 1 / 191 / 2 * (13 - 16x)

[0169] Q3 = (2 / 95)1 / 2* [29 - 4x(25 - 19x)]

[0170] Q4 = (2 / 2545)1 / 2*{207 - 4x[315 - x(577 - 320x)]

[0171] Q5 = 1 / [3(131831)1 / 2]*(7737 - 16x{4653 - 2x[7381 - 8x(1168 - 509x)]})

[0172] Q6 = 1 / [3(6632213)1 / 2]*[66657 - 32x(28338 - x{135325 - 8x[35884 - x(34661 - 12432x)]}) ...

[0174] Q14 = 1 / [105(11840460120650380601)1 / 2]*[(7203239841945 - 64x{7915646109420 + x[-215571481855135 + 8x(380772337022140 + x{-3210346879785983 + 16x[1092344486470622 + x(-4024794759472603 + 8x{1288416271535704 + x[-2318831260982541 + 32x(91315254656436 + x{-78868671818049 + 8x[5558445097372 + x(-1842465232973 + 272260669072x)]})]})]})]})]

[0175] The imaging lens assembly 21 used in the following example includes a lens having an aspherical surface that is not rotationally symmetric, which is made symmetric with respect to the X-axis and the Y-axis. The aspherical surface shape that is not rotationally symmetric is defined by a Q2D polynomial shown in Equation (26) below. Note that the Q2D polynomial is defined as the sum of a Qbfs polynomial and a polynomial of a free-form surface portion.

[0176] Z = Cxr 2 / {1 + [1 - (1 + K)xCx 2 xr 2 ] 1 / 2} + {(1 - KxCx 2 xr 2 ) 1 / 2} / {[1 - (1 + K)xCx 2 xr 2 ] 1 / 2}x{μ 2x (1 - μ 2 ) x (∑QBn x Qn1(μ 2 )+ ∑μ m x ∑[An x cos(mθ) + Bn x sin(mθ)] x Qn2(μ 2}

[0177] (n is an even number greater than or equal to 4, m is an integer greater than or equal to 1) (26)

[0179] In equation (26), Z is the depth of the asphere (mm). C is the paraxial curvature equal to 1 / R. r is the distance from the optical axis to the lens surface (X 2 + Y 2 ) 1 / 2 (mm). μ is the value of (distance from the optical axis to the lens surface / normalized radius of the lens). θ is the angle between r and the X-axis. K is the conic constant (second order asphericity coefficient), i.e., the conic constant. QBn is the n-th order Qbfs coefficient without azimuth angle. Qn1 is the n-th order coefficient specific to the Qbfs polynomial, which is equal to Qn in equation (25). Qn2 is the coefficient specific to the polynomial of the free-form surface portion. An is the n-th order coefficient of the azimuth angle cos(mθ). Bn is the n-th order coefficient of the azimuth angle sin(mθ).

[0180] When m = 1, the known coefficients Qn2 are the coefficients (partial excerpt) taking the values shown below.

[0181] Q1 = 1

[0182] Q2 = [4(1 - x)] / 14 1 / 2

[0183] Q3 = 2[25 - 8(11 - 7x)x] / 1610 1 / 2

[0184] Q4 = 4{275 - x[2187 - 16(234 - 115x)x]} / 781310 1 / 2

[0185] Q5 = (40786 - 64x{9043 - x[29083 - 4(8578 - 3397x)x]}) / 1078214594 1 / 2

[0186] When m = 2, the known coefficients Qn2 are the coefficients (partial excerpt) taking the values shown below.

[0187] Q1 = 1 / 2 1 / 2

[0188] Q2 = (9 - 8x) / 38 1 / 2

[0189] Q3 = [205 - 8(65 - 38x)x] / 5510 1 / 2

[0190] Q4 = {5495 - 16x[1750 - (2569 - 1160x)x]} / 1983890 1 / 2

[0191] Q5 = (200853 - 16x{106842 - x[282609 - 8(37233 - 13682x)x]}) / [7(32522114 1 / 2 ]

[0192] When m = 3, the known coefficients Qn2 are coefficients which take the values shown below (partial extract).

[0193] Q1 = 4 / [3(6 1 / 2 ]

[0194] Q2 = [48(10 - 9x)] / [9(1110 1 / 2 ]

[0195] Q3 = 4[6755 - 48(329 - 185x)x] / [3(4737110 1 / 2 ]

[0196] Q4 = 32{40194 - x[176715 - 8(29889 - 12803x)x]} / [9(361377478 1 / 2 ]

[0197] Q5 = (691812 - 64x{76131 - x[180387 - 16(11042 - 3849x)x]}) / [3(378538886 1 / 2 ]

[0198] When m = 4, the known coefficients Qn2 are coefficients which take the values shown below (partial extract).

[0199] Q1 = 1 / 5 1 / 2

[0200] Q2 = (35 - 32x) / 427 1 / 2

[0201] Q3 = [3948 - 80(111 - 61x)x] / 509655 1 / 2

[0202] Q4 = 8{57981 - 4x[58806 - 7(10791 - 4456x)x]} / 1436009498 1 / 2

[0203] When m = 5, the known coefficient Qn2 is a coefficient that takes the value shown below (partial excerpt).

[0204] Q1= 16 / [5(70) 1 / 2 ]

[0205] Q2= 32(27-25x) / [35(195) 1 / 2 ]

[0206] Q3= 32[21417-40(1177-637x)x] / [35(7913334) 1 / 2 ]

[0207] Q4= 32{16160001-35x[1778777-32(68848-27669x)x]} / [5(32527771277001) 1 / 2 ]

[0208] [First Example]

[0209] A first example of the camera module 11 shown in Figure 2 will be described with specific numerical values applied.

[0210] In the first example, as shown in Figure 2 , the imaging lens assembly 21 includes, in order from the object side, a first lens L1 having positive refractive power with a convex surface facing the object side, a second lens L2 having negative refractive power, a third lens L3 having positive refractive power, a fourth lens L4 having negative refractive power, a fifth lens L5 having positive refractive power with a convex surface facing the image side, a sixth lens L6 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens L8 having negative refractive power.

[0211] The aperture stop 3 is disposed on the image side with respect to the vertex of the first surface of the first lens L1 and on the object side with respect to the second surface of the first lens L1. In the first example, the second surface of the first lens L1 has an aspherical surface that is not rotationally symmetric.

[0212] Table 1 shows the curvature radius R (mm), the surface distance D (mm), the refractive index Nd, and the Abbe number vd of the lens data as a first example. Table 2 shows the values of the focal length FL, the F number Fno, the angle of view, the total track length TTL obtained when an object point at infinity is imaged, the sensor size (diagonal length), and the flange distance FB of the imaging lens assembly 21. Table 3 shows the focal length values of the first lens L1 to the eighth lens L8. Table 4 shows the values corresponding to the conditional expression shown in inequalities (1) to (24). Table 5 shows the curvature radius, the normalized radius NRADIUS, the conic coefficient K, the coefficients of the Qbfs polynomial, and the coefficients of the Q2D polynomial of each of the first lens L1 to the eighth lens L8. In Table 5, QBn is the nth order Qbfs coefficient. In Table 5, An ( m = i is the nth order coefficient of the azimuthal cosine (i.e., the maximum radial coefficient) of cos(iθ) when m is equal to i.

[0213] Table 1

[0214] R D Nd vd 1.00E+18 1.145 aperture stop 1.00E+18 -1.145 L1R1 3.420 1.624 1.548 69.750 L1R2 18.341 0.020 L2R1 11.129 0.304 1.644 21.884 L2R2 4.927 0.317 L3R1 23.742 0.495 1.648 22.522 L3R2 37.651 0.333 L4R1 -13.552 0.451 1.684 19.246 L4R2 -32.514 0.067 L5R1 -33.081 0.957 1.558 46.776 L5R2 -5.657 0.477 L6R1 -5.117 0.515 1.6775 19.60 L6R2 -9.387 0.404 L7R1 -7.210 1.040 1.5590 34.08 L7R2 -5.082 0.710 L8R1 -16.108 0.450 1.5950 31.63 L8R2 -21.469 0.201 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.468

[0215] Table 2

[0216] FL 7.089 Fno 1.38 viewing angle 81.11 TTL(INF) 9.166 sensor size 12.492 FB 0.803

[0217] Table 3

[0218] L1 6.96 L2 -18.27 L3 108.85 L4 -100.63 L5 32.09 L6 -159.84 L7 9.70 L8 -5.42

[0219] Table 4

[0220] condition expression first example Fno < 2.2 1.38 HFOV < 45 40.54 vd1 > 45 69.75 vd6 < 40 19.60 vd1 - vd2 > 10 47.87 0.3 < F1 / FL < 4.3 0.981 0.5 < |F8 / FL| < 1.1 0.764 0.8 < F L1-L5 / FL < 1.4 1.139 0.5 < |F L6-L8 F L1-L5 | < 3.9 2.139 2.5 < Σ|FL / F(i)| < 5.0 3.847 0.4 < D L6-L8 / ImgH < 1.0 0.729 5 < TTL / D L6 <28]] 17.798 0 < (R3+R4) / (R3-R4) < 10.0 2.758 0 < (R9+R10) / (R9-R10) < 3.5 1.437 -16 < (R7+R8) / (R7-R8) < 2 -2.258 -10 < (R11+R12) / (R11-R12) < 0 -3.375 0 < R13 / R14 < 4.0 1.388 Nd2 < 1.75 1.644 Nd4 < 1.75 1.684 Nd6 < 1.75 1.678 200 < Σvd(i) < 380 265.49 TTL / ImgH < 2.5 1.467 TTL / FL < 2.0 1.293 TTL / BFL < 15 11.416

[0221] Table 5

[0222]

[0223]

[0224] The aberrations of the above first example are shown in Figure 3 Figure 3 The spherical aberration, the astigmatism (field curvature), and the distortion are shown as examples of aberrations. Each of these aberration graphs shows the aberration with d line (587.56 nm) as a reference wavelength. In the spherical aberration graph, the aberration with respect to g line (435.84 nm) and C line (656.27 nm) is also shown. In the graph showing the astigmatism, “S” indicates the aberration value on the sagittal image surface, and “T” indicates the aberration value on the tangential image surface. This is also applicable to the aberration graphs in other examples.

[0225] Figure 4 ​Each root mean square (RMS) stop radius chart in the first example is shown in FIG. 1. Figure 4 The RMS stop radius chart corresponding to the real ray image height of the X axis and the real ray image height of the Y axis is shown.

[0226] According to Figure 3 the aberration charts of each of Figure 4 the RMS stop radius chart of the second example, the camera module 11 in the first example achieves significant miniaturization by effectively correcting aberrations and has good optical performance.

[0227] [Second Example]

[0228] Next, a second example of the camera module 11 shown in FIG. 2 will be described in which specific numerical values are applied. In the second example, the first surface of the eighth lens L8 has an aspherical surface that is not rotationally symmetric. The lens parameters corresponding to the lens parameters in the second example are shown in Tables 6 to 10. Figure 5

[0229] Table 6

[0230] R D Nd vd 1.00E+18 1.204 aperture stop 1.00E+18 -1.204 L1R1 3.370 1.588 1.575 65.426 L1R2 15.692 0.020 L2R1 9.264 0.300 1.681 19.414 L2R2 5.405 0.280 L3R1 10.746 0.691 1.684 19.246 L3R2 13.159 0.374 L4R1 -12.797 0.335 1.663 21.017 L4R2 -27.032 0.067 L5R1 -25.844 1.061 1.558 46.794 L5R2 -5.383 0.626 L6R1 -4.645 0.449 1.6839 19.25 L6R2 -9.141 0.425 L7R1 -7.886 0.686 1.6245 25.63 L7R2 -6.422 0.949 L8R1 -10.794 0.450 1.5900 32.99 L8R2 -13.775 0.048 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.515

[0231] Table 7

[0232] FL 7.372 Fno 1.38 viewing angle 78.90 TTL(INF) 9.200 sensor size 12.492 FB 0.850

[0233] Table 8

[0234] L1 7.59 L2 -16.42 L3 35.38 L4 -56.70 L5 20.29 L6 -121.85 L7 12.40 L8 -5.34

[0235] Table 9

[0236] condition expression second example Fno < 2.2 1.38 HFOV < 45 39.45 vd1 > 45 65.43 vd6 < 40 19.25 vd1 - vd2 > 10 46.01 0.3 < F1 / FL < 4.3 1.029 0.5 < |F8 / FL| < 1.1 0.725 0.8 < F L1-L5 / FL < 1.4 1.064 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.425 2.5 < Σ|FL / F(i)| < 5.0 4.156 0.4 < D L6-L8 / ImgH < 1.0 0.744 5 < TTL / D L6 <28]] 20.490 0 < (R3+R4) / (R3-R4) < 10.0 3.544 0 < (R9+R10) / (R9-R10) < 3.5 1.515 -16 < (R7+R8) / (R7-R8) < 2 -2.761 -10 < (R11+R12) / (R11-R12) < 0 -3.512 0 < R13 / R14 < 4.0 1.409 Nd2 < 1.75 1.681 Nd4 < 1.75 1.663 Nd6 < 1.75 1.684 200 < Σvd(i) < 380 249.76 TTL / ImgH < 2.5 1.473 TTL / FL < 2.0 1.248 TTL / BFL < 15 10.827

[0237] Table 10

[0238]

[0239]

[0240] Figure 6 Each aberration in the second example is shown. The RMS stop chart in the second example is shown in FIG. 2. According to the camera module 11 of the second example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example. Figure 7

[0241] [Third Example]

[0242] Next, a third example of the camera module 11 shown in FIG. 3 will be described in which specific numerical values are applied. In the third example, the first surface of the eighth lens L8 has an aspherical surface that is not rotationally symmetric. The lens parameters corresponding to the lens parameters in the third example are shown in Tables 11 to 15. Figure 8 ​​A third example of the camera module 11 is shown. Unlike the first example and the second example, in the third example, the fourth lens L4 has a positive refractive power, and the sixth lens L6 has a positive refractive power. In the third example, the second surface of the seventh lens L7 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 11 to 15.

[0243] Table 11

[0244] R D Nd vd 1.00E+18 0.866 aperture stop 1.00E+18 -0.866 L1R1 3.430 1.512 1.562 67.435 L1R2 16.222 0.020 L2R1 10.216 0.300 1.602 26.216 L2R2 5.413 0.148 L3R1 8.579 0.619 1.677 19.741 L3R2 11.013 0.364 L4R1 -20.635 0.448 1.650 21.450 L4R2 -68.155 0.103 L5R1 -24.646 1.049 1.547 55.911 L5R2 -4.915 0.470 L6R1 -3.522 0.454 1.6839 19.25 L6R2 -9.535 0.527 L7R1 -7.826 0.832 1.5987 26.61 L7R2 -5.651 0.811 L8R1 -12.332 0.450 1.5887 28.08 L8R2 -18.231 0.137 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.425

[0245] Table 12

[0246] FL 6.736 Fno 1.38 viewing angle 83.99 TTL(INF) 9.007 sensor size 12.492 FB 0.760

[0247] Table 13

[0248] L1 7.98 L2 -15.98 L3 31.03 L4 1347.63 L5 24.21 L6 80.58 L7 12.36 L8 -5.20

[0249] Table 14

[0250] condition expression third example Fno < 2.2 1.38 HFOV < 45 41.99 vd1 > 45 67.43 vd6 < 40 19.25 vd1 - vd2 > 10 41.22 0.3 < F1 / FL < 4.3 1.184 0.5 < |F8 / FL| < 1.1 0.773 0.8 < F L1-L5 / F L < 1.4 1.144 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.956 2.5 < Σ|FL / F(i)| < 5.0 3.689 0.4 < D L6-L8 / ImgH < 1.0 0.735 5 < TTL / D L6 <28]] 19.839 0 < (R3+R4) / (R3-R4) < 10.0 2.106 0 < (R9+R10) / (R9-R10) < 3.5 1.545 -16 < (R7+R8) / (R7-R8) < 2 -2.028 -10 < (R11+R12) / (R11-R12) < 0 -3.193 0 < R13 / R14 < 4.0 1.527 Nd2 < 1.75 1.602 Nd4 < 1.75 1.650 Nd6 < 1.75 1.684 200 < Σvd(i) < 380 264.69 TTL / ImgH < 2.5 1.442 TTL / FL < 2.0 1.337 TTL / BFL < 15 11.853

[0251] Table 15

[0252]

[0253]

[0254] Figure 9 Aberrations in the third example are shown. Figure 10 An RMS pupil radius chart in the third example is shown. According to the camera module 11 of the third example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0255] [Fourth Example]

[0256] Next, application of specific numerical values to the fourth example of the camera module 11 will be described. Figure 11 A fourth example of the camera module 11 is shown. Unlike the first and second examples, in the fourth example, the sixth lens L6 has a positive refractive power. In the fourth example, the first surface of the seventh lens L7 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters of the first example are shown in Tables 16 to 20.

[0257] Table 16

[0258] R D Nd vd 1.00E+18 1.283 aperture stop 1.00E+18 -1.283 L1R1 3.367 1.690 1.554 62.402 L1R2 16.243 0.020 L2R1 11.291 0.304 1.682 19.407 L2R2 5.926 0.232 L3R1 10.899 0.651 1.530 44.299 L3R2 13.434 0.367 L4R1 -11.530 0.343 1.681 19.402 L4R2 -24.806 0.050 L5R1 -24.054 0.970 1.547 55.173 L5R2 -5.265 0.546 L6R1 -5.262 0.510 1.6636 20.93 L6R2 -8.805 0.511 L7R1 -7.655 0.759 1.5122 55.50 L7R2 -3.536 0.842 L8R1 -13.853 0.450 1.5858 34.28 L8R2 -17.210 0.109 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.495

[0259] Table 17

[0260] FL 7.411 Fno 1.38 angle of view 78.58 TTL(INF) 9.185 sensor size 12.492 FB 0.829

[0261] Table 18

[0262] L1 7.41 L2 -16.67 L3 43.80 L4 -56.59 L5 24.31 L6 188.46 L7 11.54 L8 -5.03

[0263] Table 19

[0264] condition expression Fourth Example Fno < 2.2 1.38 HFOV < 45 39.29 vd1 > 45 62.40 vd6 < 40 20.93 vd1 - vd2 > 10 42.99 0.3 < F1 / FL < 4.3 0.999 0.5 < |F8 / FL| < 1.1 0.678 0.8 < F L1-L5 / FL < 1.4 1.100 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.600 2.5 < Σ|FL / F(i)| < 5.0 4.206 0.4 < D L6-L8 / ImgH < 1.0 0.735 5 < TTL / D L6 <28]] 18.010 0 < (R3+R4) / (R3-R4) < 10.0 3.148 0 < (R9+R10) / (R9-R10) < 3.5 1.562 -16 < (R7+R8) / (R7-R8) < 2 -2.708 -10 < (R11+R12) / (R11-R12) < 0 -3.801 0 < R13 / R14 < 4.0 1.481 Nd2 < 1.75 1.682 Nd4 < 1.75 1.681 Nd6 < 1.75 1.664 200 < Σvd(i) < 380 311.39 TTL / ImgH < 2.5 1.471 TTL / FL < 2.0 1.239 TTL / BFL < 15 11.072

[0265] Table 20

[0266]

[0267]

[0268] Figure 12 Aberrations in the fourth example are shown. Figure 13 RMS stop radius diagrams in the fourth example are shown. According to the camera module 11 of the fourth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0269] [Fifth Example]

[0270] Next, a fifth example of the camera module 11 to which specific numerical values are applied will be described. Figure 14 The fifth example of the camera module 11 shown in FIG. 8 is different from the first and second examples in that the sixth lens L6 has a positive refractive power. In the fifth example, the second surface of the sixth lens L6 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 21 to 25.

[0271] Table 21

[0272] R D Nd vd 1.00E+18 1.172 aperture stop 1.00E+18 -1.172 L1R1 3.379 1.822 1.528 73.853 L1R2 12.912 0.020 L2R1 7.013 0.300 1.638 22.398 L2R2 5.061 0.074 L3R1 7.589 0.365 1.657 21.598 L3R2 9.731 0.483 L4R1 -19.075 0.300 1.525 56.236 L4R2 -22.241 0.150 L5R1 -17.956 0.978 1.550 52.507 L5R2 -5.769 0.556 L6R1 -4.697 0.474 1.6183 24.26 L6R2 -8.721 0.510 L7R1 -6.982 0.802 1.5695 31.62 L7R2 -5.567 0.844 L8R1 -15.302 0.450 1.5856 32.70 L8R2 -19.252 0.154 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.472

[0273] Table 22

[0274] FL 7.221 Fno 1.38 angle of view 80.05 TTL(INF) 9.089 sensor size 12.492 FB 0.807

[0275] Table 23

[0276] L1 27.45 L2 -20.54 L3 7.26 L4 -76.50 L5 26.28 L6 63.87 L7 14.76 L8 -5.70

[0277] Table 24

[0278] condition expression Fifth Example Fno < 2.2 1.38 HFOV < 45 40.02 vd1 > 45 73.85 vd6 < 40 24.26 vd1 - vd2 > 10 51.45 0.3 < F1 / FL < 4.3 3.801 0.5 < |F8 / FL| < 1.1 0.789 0.8 < F L1-L5 / FL < 1.4 1.142 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.928 2.5 < Σ|FL / F(i)| < 5.0 3.849 0.4 < D L6-L8 / ImgH < 1.0 0.739 5 < TTL / D L6 <28]] 19.176 0 < (R3+R4) / (R3-R4) < 10.0 6.186 0 < (R9+R10) / (R9-R10) < 3.5 1.947 -16 < (R7+R8) / (R7-R8) < 2 -13.049 -10 < (R11+R12) / (R11-R12) < 0 -3.334 0 < R13 / R14 < 4.0 1.254 Nd2 < 1.75 1.638 Nd4 < 1.75 1525 Nd6 < 1.75 1.618 200 < Σvd(i) < 380 315.17 TTL / ImgH < 2.5 1.455 TTL / FL < 2.0 1.259 TTL / BFL < 15 11.267

[0279] Table 25

[0280]

[0281]

[0282] Fig. 15Aberrations in the sixth example are shown. Fig. 16 An RMS pupil radius chart in the sixth example is shown. According to the camera module 11 of the sixth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0283] [Seventh Example]

[0284] Next, application of specific numerical values to the camera module 11 of the seventh example will be described. Fig. 17 The seventh example of the camera module 11 shown in FIG. 17. In the seventh example, the sixth lens L6 has a positive refractive power. In the seventh example, the second surface of the sixth lens L6 has a non-rotationally symmetric aspherical shape. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 31 to 35.

[0285] Table 31

[0286] R D Nd vd 1.00E+18 0.957 aperture stop 1.00E+18 -0.957 L1R1 3.477 1.577 1.546 70.120 L1R2 14.648 0.020 L2R1 10.555 0.300 1.511 56.474 L2R2 3.446 0.343 L3R1 11.100 0.511 1.667 20.216 L3R2 14.096 0.325 L4R1 -13.111 0.428 1.633 22.784 L4R2 -80.025 0.056 L5R1 -41.310 0.876 1.579 36.537 L5R2 -5.862 0.443 L6R1 -4.685 0.491 1.6839 19.25 L6R2 -9.555 0.665 L7R1 -7.619 0.851 1.5842 28.81 L7R2 -3.805 0.773 L8R1 -13.001 0.450 1.5812 29.35 L8R2 -15.490 0.146 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.411

[0287] Table 32

[0288] FL 6.914 Fno 1.38 viewing angle 82.63 TTL(INF) 9.001 sensor size 12.492 FB 0.746

[0289] Table 33

[0290] L1 8.88 L2 -71.78 L3 179.25 L4 -41.44 L5 20.69 L6 71.47 L7 12.60 L8 -5.59

[0291] Table 34

[0292] condition expression sixth example Fno < 2.2 1.38 HFOV < 45 41.39 vd1 > 45 70.12 vd6 < 40 19.25 vd1 - vd2 > 10 13.65 0.3 < F1 / FL < 4.3 1.291 0.5 < |F8 / FL| < 1.1 0.813 0.8 < F L1-L5 / FL < 1.4 1.163 0.5 < |F L6-L8 / F L1-L5 | < 3.9 2.277 2.5 < ∑|FL / F(i)| < 5.0 3.276 0.4 < D L6-L8 / ImgH < 1.0 0.728 5 < TTL / D L6 <28]] 18.295 0 < (R3+R4) / (R3-R4) < 10.0 3.426 0 < (R9+R10) / (R9-R10) < 3.5 1.305 -16 < (R7+R8) / (R7-R8) < 2 -1.390 -10 < (R11+R12) / (R11-R12) < 0 -3.509 0 < R13 / R14 < 4.0 1.488 Nd2 < 1.75 1.511 Nd4 < 1.75 1.633 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 283.54 TTL / ImgH < 2.5 1.438 TTL / FL < 2.0 1.306 TTL / BFL < 15 12.344

[0293] Table 35

[0294]

[0295]

[0296] Fig. 18 Aberrations in the seventh example are shown. Fig. 19 An RMS pupil radius chart in the seventh example is shown. According to the camera module 11 of the seventh example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0297] [Seventh Example]

[0298] Next, application of specific numerical values to the camera module 11 of the seventh example will be described. Fig. 20A seventh example of the camera module 11 is shown. Unlike the first example and the second example, the second lens L2 in the seventh example has a positive refractive power. In the seventh example, the first surface of the sixth lens L6 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 31 to 35.

[0299] Table 31

[0300] R D Nd vd 1.00E+18 0.927 aperture stop 1.00E+18 -0.927 L1R1 3.617 1.321 1.569 66.296 L1R2 24.234 0.020 L2R1 8.525 0.470 1.594 27.261 L2R2 4.189 0.383 L3R1 12.854 0.578 1.545 55.936 L3R2 -63.959 0.340 L4R1 -9.036 0.417 1.613 24.851 L4R2 -15.830 0.045 L5R1 -21.899 1.040 1.540 56.016 L5R2 -5.249 0.401 L6R1 -4.823 0.466 1.6837 19.26 L6R2 -8.009 0.300 L7R1 -9.444 1.044 1.5795 29.64 L7R2 -5.578 0.897 L8R1 -12.848 0.450 1.5959 31.18 L8R2 -16.167 0.131 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.395

[0301] Table 32

[0302] FL 6.819 Fno 1.38 viewing angle 83.30 TTL(INF) 9.033 sensor size 12.492 FB 0.729

[0303] Table 33

[0304] L1 10.32 L2 870.14 L3 36.38 L4 -119.32 L5 56.06 L6 -98.69 L7 8.43 L8 -4.74

[0305] Table 34

[0306] condition expression seventh example Fno < 2.2 1.38 HFOV < 45 41.65 vd1 > 45 66.30 vd6 < 40 19.26 vd1 - vd2 > 10 39.03 0.3 < F1 / FL < 4.3 1.514 0.5 < |F8 / FL| < 1.1 0.695 0.8 < F L1-L5 / FL < 1.4 1.151 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.965 2.5 < ∑|FL / F(i)| < 5.0 3.351 0.4 < D L6-L8 / ImgH < 1.0 0.736 5 < TTL / D L6 <28]] 19.384 0 < (R3+R4) / (R3-R4) < 10.0 4.065 0 < (R9+R10) / (R9-R10) < 3.5 1.648 -16 < (R7+R8) / (R7-R8) < 2 -3.429 -10 < (R11+R12) / (R11-R12) < 0 -4.756 0 < R13 / R14 < 4.0 2.045 Nd2 < 1.75 1.594 Nd4 < 1.75 1.613 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 310.44 TTL / ImgH < 2.5 1.446 TTL / FL < 2.0 1.325 TTL / BFL < 15 12.390

[0307] Table 35

[0308]

[0309]

[0310] Fig. 21 Aberrations in the seventh example are shown. Fig. 22 An RMS pupil radius chart in the seventh example is shown. According to the camera module 11 of the seventh example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0311] [Eighth Example]

[0312] Next, application of specific numerical values to the lens parameters in the first example will be described. Fig. 23 An eighth example of the camera module 11 is shown. In the eighth example, the second surface of the fifth lens L5 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 36 to 40.

[0313] Table 36

[0314] R D Nd vd 1.00E+18 1.085 aperture stop 1.00E+18 -1.085 L1R1 3.434 1.694 1.544 70.619 L1R2 14.778 0.020 L2R1 10.470 0.301 1.662 20.577 L2R2 3.587 0.211 L3R1 10.990 0.641 1.622 25.988 L3R2 15.001 0.339 L4R1 -11.259 0.528 1.580 29.608 L4R2 -21.272 0.077 L5R1 -19.890 0.946 1.583 35.353 L5R2 -5.309 0.399 L6R1 -5.783 0.557 1.5627 33.17 L6R2 -8.951 0.385 L7R1 -7.254 0.881 1.5900 27.91 L7R2 -6.711 0.860 L8R1 -10.604 0.450 1.5845 34.70 L8R2 -14.715 0.051 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.486

[0315] Table 37

[0316] FL 7.097 Fno 1.38 viewing angle 81.05 TTL(INF) 9.162 sensor size 12.492 FB 0.820

[0317] Table 38

[0318] L1 8.03 L2 -23.14 L3 39.93 L4 -106.16 L5 29.95 L6 -857.59 L7 11.50 L8 -5.24

[0319] Table 39

[0320] condition expression eighth example Fno < 2.2 1.38 HFOV < 45 40.53 vd1 > 45 70.62 vd6 < 40 33.17 vd1 - vd2 > 10 50.04 0.3 < F1 / FL < 4.3 1.132 0.5 < |F8 / FL| < 1.1 0.738 0.8 < F L1-L5 / FL < 1.4 1.103 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.670 2.5 < ∑|FL / F(i)| < 5.0 3.651 0.4 < D L6-L8 / ImgH < 1.0 0.717 5 < TTL / D L6 <28]] 16.443 0 < (R3+R4) / (R3-R4) < 10.0 3.059 0 < (R9+R10) / (R9-R10) < 3.5 -16 < (R7+R8) / (R7-R8) < 2 -10 < (R11+R12) / (R11-R12) < 0 0 < R13 / R14 < 4.0 Nd2 < 1.75 Nd4 < 1.75 Nd6 < 1.75 200 < ∑vd(i) < 380 TTL / ImgH < 2.5 TTL / FL < 2.0 TTL / BFL < 15 1.757 -16 < (R7+R8) / (R7-R8) < 2 -3.394 -10 < (R11+R12) / (R11-R12) < 0 -3.802 0 < R13 / R14 < 4.0 1.443 Nd2 < 1.75 1.662 Nd4 < 1.75 1.580 Nd6 < 1.75 1.563 200 < ∑vd(i) < 380 277.93 TTL / ImgH < 2.5 1.466 TTL / FL < 2.0 1.291 TTL / BFL < 15 11.202

[0321] Table 40

[0322]

[0323]

[0324] Aberrations in the eighth example are shown in FIG. 24. Figure 24 Aberrations in the eighth example are shown in FIG. 24. Figure 25 An RMS pupil radius chart in the eighth example is shown. According to the camera module 11 of the eighth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0325] [Ninth Example]

[0326] Next, a ninth example in which specific numerical values are applied to the camera module 11 shown in FIG. 23 will be described. Unlike the first example and the second example, in the ninth example, the sixth lens L6 has a positive refractive power. In the ninth example, the first surface of the fifth lens L5 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 41 to 45. Figure 26

[0327] Table 41

[0328] R D Nd vd 1.00E+18 1.177 aperture stop 1.00E+18 -1.177 L1R1 3.429 1.629 1.540 71.322 L1R2 17.487 0.020 L2R1 9.706 0.300 1.657 20.908 L2R2 5.106 0.316 L3R1 14.034 0.531 1.554 39.254 L3R2 17.741 0.396 L4R1 -11.330 0.398 1.684 19.246 L4R2 -17.839 0.069 L5R1 -15.330 0.879 1.547 55.912 L5R2 -4.998 0.555 L6R1 -5.009 0.462 1.6839 19.25 L6R2 -7.076 0.388 L7R1 -7.087 0.894 1.5305 44.12 L7R2 -5.724 0.882 L8R1 -11.627 0.450 1.5917 30.48 L8R2 -17.255 0.108 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.490

[0329] Table 42

[0330] FL 7.190 Fno 1.38 angle of view 80.29 TTL(INF) 9.101 sensor size 12.492 FB 0.824

[0331] Table 43

[0332] L1 7.12 L2 -17.43 L3 63.40 L4 -151.62 L5 34.13 L6 1893.79 L7 10.50 L8 -4.86

[0333] Table 44

[0334] condition expression Ninth Example Fno < 2.2 1.38 HFOV < 45 40.15 vd1 > 45 71.32 vd6 < 40 19.25 vd1-vd2 > 10 50.41 0.3 < F1 / FL < 4.3 0.990 0.5 < |F8 / FL| < 1.1 0.677 0.8 < F L1-L5 / FL < 1.4 1.125 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.645 2.5 < ∑|FL / F(i)| < 5.0 3.961 0.4 < D L6-L8 / ImgH < 1.0 0.722 5 < TTL / D L6 <28]] 19.699 0 < (R3+R4) / (R3-R4) < 10.0 3.011 0 < (R9+R10) / (R9-R10) < 3.5 1.991 -16 < (R7+R8) / (R7-R8) < 2 -4.126 -10 < (R11+R12) / (R11-R12) < 0 -6.814 0 < R13 / R14 < 4.0 1.354 Nd2 < 1.75 1.657 Nd4 < 1.75 1.684 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 300.49 TTL / ImgH < 2.5 1.457 TTL / FL < 2.0 1.266 TTL / BFL < 15 11.041

[0335] Table 45

[0336]

[0337]

[0338] Aberrations in the ninth example are shown in FIG. 25. Figure 27 Aberrations in the ninth example are shown in FIG. 25. Figure 28 ​An RMS stop radius chart in the ninth example is shown. According to the camera module 11 of the ninth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effect as the first example.

[0339] [Tenth Example]

[0340] Next, a tenth example of the camera module 11 to which specific numerical values are applied will be described. Figure 29 The tenth example of the camera module 11 shown in FIG. 10 is different from the first example and the second example. In the tenth example, the sixth lens L6 has a positive refractive power. In the tenth example, the first surface of the fourth lens L4 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 46 to 50.

[0341] Table 46

[0342] R D Nd vd 1.00E+18 1.179 aperture stop 1.00E+18 -1.179 L1R1 3.397 1.484 1.545 70.246 L1R2 15.458 0.020 L2R1 10.793 0.343 1.654 21.140 L2R2 5.682 0.267 L3R1 10.766 0.618 1.605 29.209 L3R2 16.928 0.336 L4R1 -11.730 0.407 1.683 19.290 L4R2 -29.858 0.104 L5R1 -23.105 1.103 1.593 32.093 L5R2 -5.712 0.457 L6R1 -5.707 0.500 1.6818 19.38 L6R2 -8.506 0.422 L7R1 -8.955 0.577 1.5956 29.33 L7R2 -7.829 0.965 L8R1 -9.610 0.450 1.5535 35.65 L8R2 -14.510 0.264 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.491

[0343] Table 47

[0344] FL 7.159 Fno 1.38 angle of view 80.54 TTL(INF) 9.143 sensor size 12.492 FB 0.825

[0345] Table 48

[0346] L1 7.71 L2 -18.52 L3 38.08 L4 -58.93 L5 33.19 L6 181.79 L7 8.93 L8 -5.31

[0347] Table 49

[0348] condition expression Tenth Example Fno < 2.2 1.38 HFOV < 45 40.27 vd1 > 45 70.25 vd6 < 40 19.38 vd1-vd2 > 10 49.11 0.3 < F1 / FL < 4.3 1.077 0.5 < |F8 / FL| < 1.1 0.742 0.8 < F L1-L5 / FL < 1.4 1.183 0.5 < |F L6-L8 / F L1-L5 | < 3.9 3.162 2.5 < ∑|FL / F(i)| < 5.0 4.030 0.4 < D L6-L8 / ImgH < 1.0 0.716 5 < TTL / D L6 <28]] 18.286 0 < (R3+R4) / (R3-R4) < 10.0 3.203 0 < (R9+R10) / (R9-R10) < 3.5 1.645 -16 < (R7+R8) / (R7-R8) < 2 -2.361 -10 < (R11+R12) / (R11-R12) < 0 -4.744 0 < R13 / R14 < 4.0 1.893 Nd2 < 1.75 1.654 Nd4 < 1.75 1.683 Nd6 < 1.75 1.682 200 < ∑vd(i) < 380 256.33 TTL / ImgH < 2.5 1.464 TTL / FL < 2.0 1.277 TTL / BFL < 15 11.079

[0349] Table 50

[0350]

[0351]

[0352] Aberrations in the tenth example are shown in FIGS. 10A to 10D. Figure 30 Figure 31 An RMS stop radius chart in the tenth example is shown. According to the camera module 11 of the tenth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effect as the first example.

[0353] [Eleventh Example]

[0354] Next, an eleventh example of the camera module 11 to which specific numerical values are applied will be described. Figure 32 ​The eleventh example of camera module 11 is shown. Unlike the first and second examples, the fourth lens L4 in the eleventh example has positive refractive power. In the eleventh example, the second surface of the third lens L3 has a non-rotationally symmetric aspherical shape. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 51 to 55.

[0355] Table 51

[0356] R D Nd vd 1.00E+18 1.189 aperture stop 1.00E+18 -1.189 L1R1 3.383 1.449 1.543 50.271 L1R2 17.326 0.020 L2R1 10.768 0.300 1.683 19.316 L2R2 5.647 0.306 L3R1 11.735 0.564 1.534 42.452 L3R2 12.513 0.318 L4R1 -17.733 0.404 1.663 20.954 L4R2 -28.959 0.084 L5R1 -23.080 0.900 1.539 56.031 L5R2 -5.573 0.456 L6R1 -5.255 0.457 1.6839 19.25 L6R2 -9.076 0.465 L7R1 -7.263 1.013 1.5742 33.74 L7R2 -5.630 0.739 L8R1 -12.413 0.450 1.5876 32.94 L8R2 -16.612 0.111 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.451

[0357] Table 52

[0358] FL 6.928 Fno 1.38 angle of view 82.40 TTL(INF) 8.822 sensor size 12.492 FB 0.786

[0359] Table 53

[0360] L1 7.47 L2 -24.55 L3 154.91 L4 2857.34 L5 36.32 L6 -12698.69 L7 10.25 L8 -5.03

[0361] Table 54

[0362] condition expression Eleventh Example Fno < 2.2 1.38 HFOV < 45 41.20 vd1 > 45 50.27 vd6 < 40 19.25 vd1 - vd2 > 10 30.96 0.3 < F1 / FL < 4.3 1.078 0.5 < |F8 / FL| < 1.1 0.726 0.8 < F L1-L5 / FL < 1.4 1.128 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.849 2.5 < ∑|FL / F(i)| < 5.0 3.502 0.4 < D L6-L8 / ImgH < 1.0 0.717 5 < TTL / D L6 <28]] 19.304 0 < (R3+R4) / (R3-R4) < 10.0 3.195 0 < (R9+R10) / (R9-R10) < 3.5 1.629 -16 < (R7+R8) / (R7-R8) < 2 -2.472 -10 < (R11+R12) / (R11-R12) < 0 -3.632 0 < R13 / R14 < 4.0 1.486 Nd2 < 1.75 1.683 Nd4 < 1.75 1.663 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 274.95 TTL / ImgH < 2.5 1.412 TTL / FL < 2.0 1.273 TTL / BFL < 15 11.231

[0363] Table 55

[0364]

[0365]

[0366] The aberrations in the eleventh example are as follows: Figure 33 As shown. Figure 34 The RMS aperture radius diagram for the eleventh example is shown. Based on the camera module 11 of the eleventh example, by making the lens parameters different from those of the first example, the design freedom of the camera module 11 can be further increased while achieving the same effect as the first example.

[0367] [Example 12]

[0368] Next, we will describe applying specific values. Figure 35 The twelfth example of the camera module 11 is shown. Unlike the first and second examples, in the twelfth example, the sixth lens L6 has positive refractive power. In the twelfth example, the first surface of the third lens L3 has a non-rotationally symmetric aspherical shape. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 56 to 60.

[0369] Table 56

[0370] R D Nd vd 1.00E+18 1.245 aperture stop 1.00E+18 -1.245 L1R1 3.410 1.501 1.562 62.850 L1R2 16.623 0.020 L2R1 10.988 0.309 1.684 19.246 L2R2 5.911 0.352 L3R1 11.201 0.603 1.627 25.311 L3R2 12.251 0.449 L4R1 -9.637 0.311 1.684 19.246 L4R2 -17.589 0.021 L5R1 -22.162 1.008 1.547 55.912 L5R2 -5.071 0.560 L6R1 -4.574 0.486 1.6839 19.25 L6R2 -8.875 0.572 L7R1 -7.318 0.800 1.5665 32.27 L7R2 -5.845 0.834 L8R1 -11.457 0.450 1.5809 29.82 L8R2 -15.921 0.084 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.504

[0371] Table 57

[0372] FL 7.392 Fno 1.38 angle of view 78.73 TTL(INF) 9.200 sensor size 12.492 FB 0.839

[0373] Table 58

[0374] L1 7.50 L2 -19.81 L3 93.22 L4 -74.54 L5 23.14 L6 71.28 L7 15.93 L8 -5.41

[0375] Table 59

[0376] condition expression twelfth example Fno < 2.2 1.38 HFOV < 45 39.36 vd1 > 45 62.85 vd6 < 40 19.25 vd1 - vd2 > 10 43.60 0.3 < F1 / FL < 4.3 1.015 0.5 < |F8 / FL| < 1.1 0.732 0.8 < F L1-L5 / FL < 1.4 1.101 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.544 2.5 < ∑|FL / F(i)| < 5.0 3.790 0.4 < D L6-L8 / ImgH < 1.0 0.754 5 < TTL / D L6 <28]] 18.930 0 < (R3+R4) / (R3-R4) < 10.0 3.300 0 < (R9+R10) / (R9-R10) < 3.5 1.592 -16 < (R7+R8) / (R7-R8) < 2 -3.469 -10 < (R11+R12) / (R11-R12) < 0 -3.558 0 < R13 / R14 < 4.0 1.386 Nd2 < 1.75 1.684 Nd4 < 1.75 1.684 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 263.90 TTL / ImgH < 2.5 1.473 TTL / FL < 2.0 1.245 TTL / BFL < 15 10.967

[0377] Table 60

[0378]

[0379]

[0380] Aberrations in the twelfth example are as shown in Figure 36 . Figure 37 An RMS pupil radius chart in the twelfth example is shown. According to the camera module 11 of the twelfth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0381] [Thirteenth Example]

[0382] Next, a thirteenth example in which specific numerical values are applied to the camera module 11 shown in Figure 38 will be described. In the thirteenth example, the first surface of the second lens L2 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 61 to 65.

[0383] Table 61

[0384] R D Nd vd 1.00E+18 1.026 aperture stop 1.00E+18 -1.026 L1R1 3.527 1.438 1.557 68.164 L1R2 15.983 0.020 L2R1 6.705 0.300 1.682 19.362 L2R2 4.973 0.169 L3R1 10.382 0.431 1.673 20.082 L3R2 14.847 0.283 L4R1 -14.388 1.149 1.622 25.948 L4R2 -24.706 0.078 L5R1 -23.931 0.771 1.627 25.200 L5R2 -5.871 0.461 L6R1 -5.870 0.884 1.6654 20.35 L6R2 -9.225 0.144 L7R1 -12.858 0.638 1.5767 33.43 L7R2 -8.076 1.003 L8R1 -10.570 0.450 1.6127 27.68 L8R2 -16.715 0.143 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.373

[0385] Table 62

[0386] FL 6.734 Fno 1.38 angle of view 84.01 TTL(INF) 9.070 sensor size 12.492 FB 0.708

[0387] Table 63

[0388] L1 7.80 L2 -16.19 L3 25.97 L4 -83.07 L5 30.77 L6 -24.11 L7 7.29 L8 -5.57

[0389] Table 64

[0390] condition expression thirteenth example Fno < 2.2 1.38 HFOV < 45 42.00 vd1 > 45 68.16 vd6 < 40 20.35 vd1 - vd2 > 10 48.80 0.3 < F1 / FL < 4.3 1.158 0.5 < |F8 / FL| < 1.1 0.827 0.8 < F L1-L5 / FL < 1.4 1.183 0.5 < |F L6-L8 / F L1-L5 | < 3.9 2.287 2.5 < ∑|FL / F(i)| < 5.0 4.251 0.4 < D L6-L8 / ImgH < 1.0 0.697 5 < TTL / D L6 <28]] 10.261 0 < (R3+R4) / (R3-R4) < 10.0 2.999 0 < (R9+R10) / (R9-R10) < 3.5 1.631 -16 < (R7+R8) / (R7-R8) < 2 -2.730 -10 < (R11+R12) / (R11-R12) < 0 -2.404 0 < R13 / R14 < 4.0 2.516 Nd2 < 1.75 1.682 Nd4 < 1.75 1.622 Nd6 < 1.75 1.665 200 < ∑vd(i) < 380 240.21 TTL / ImgH < 2.5 1.452 TTL / FL < 2.0 1.347 TTL / BFL < 15 12.809

[0391] Table 65

[0392]

[0393]

[0394] Aberrations in the thirteenth example are as shown in Figure 39 . Figure 40An RMS stop radius chart in the thirteenth example is shown. According to the camera module 11 of the thirteenth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effect as the first example.

[0395] [Fourteenth Example]

[0396] Next, a fourteenth example of the camera module 11 to which specific numerical values are applied will be described. Fig. 41 The fourteenth example of the camera module 11 shown in FIG. 14 is different from the first example and the second example. In the fourteenth example, the sixth lens L6 has a positive refractive power, and the seventh lens L7 has a negative refractive power. In the fourteenth example, the first surface of the second lens L2 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 66 to 70.

[0397] Table 66

[0398] R D Nd vd 1.00E+18 1.258 aperture stop 1.00E+18 -1.258 L1R1 3.339 1.614 1.547 67.740 L1R2 15.360 0.020 L2R1 11.714 0.300 1.659 20.768 L2R2 5.920 0.285 L3R1 11.067 0.677 1.678 19.690 L3R2 12.711 0.344 L4R1 -10.501 0.300 1.684 19.246 L4R2 -23.737 0.049 L5R1 -23.259 1.044 1.563 43.838 L5R2 -5.194 0.519 L6R1 -6.106 0.441 1.6839 19.25 L6R2 -8.273 0.642 L7R1 -4.564 0.880 1.6070 25.55 L7R2 -5.719 0.725 L8R1 -9.726 0.450 1.5454 53.59 L8R2 -14.242 0.106 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.470

[0399] Table 67

[0400] FL 7.396 Fno 1.38 viewing angle 78.70 TTL(INF) 9.200 sensor size 12.492 FB 0.804

[0401] Table 68

[0402] L1 7.42 L2 -17.18 L3 42.44 L4 -84.26 L5 24.68 L6 28.14 L7 -871.44 L8 -6.52

[0403] Table 69

[0404] condition expression fourteenth example Fno < 2.2 1.38 HFOV < 45 39.35 vd1 > 45 67.74 vd6 < 40 19.25 vd1 - vd2 > 10 46.97 0.3 < F1 / FL < 4.3 1.003 0.5 < |F8 / FL| < 1.1 0.881 0.8 < F L1-L5 / FL < 1.4 1.062 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.313 2.5 < ∑|FL / F(i)| < 5.0 3.396 0.4 < D L6-L8 / ImgH < 1.0 0.753 5 < TTL / D L6 <28]] 20.862 0 < (R3+R4) / (R3-R4) < 10.0 2.997 0 < (R9+R10) / (R9-R10) < 3.5 1.581 -16 < (R7+R8) / (R7-R8) < 2 -2.832 -10 < (R11+R12) / (R11-R12) < 0 -4.675 0 < R13 / R14 < 4.0 0.837 Nd2 < 1.75 1.659 Nd4 < 1.75 1.684 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 269.67 TTL / ImgH < 2.5 1.473 TTL / FL < 2.0 1.244 TTL / BFL < 15 11.444

[0405] Table 70

[0406]

[0407]

[0408] Aberrations in the fourteenth example are shown in FIGS. 14A to 14D. Fig. 42 Fig. 43 An RMS stop radius chart in the fourteenth example is shown. According to the camera module 11 of the fourteenth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effect as the first example.

[0409] [Fifteenth Example]

[0410] Next, a fifteenth example of the camera module 11 to which specific numerical values are applied will be described. Fig. 44 ​A fifteenth example of the camera module 11 is shown. Unlike the first example and the second example, the third lens L3 in the fifteenth example has a negative refractive power. In the fifteenth example, the second surface of the first lens L1 has an aspherical shape that is not rotationally symmetrical. The lens parameters corresponding to the lens parameters in the first example are shown in Tables 71 to 75.

[0411] Table 71

[0412] R D Nd vd 1.00E+18 1.246 aperture stop 1.00E+18 -1.246 L1R1 3.385 1.517 1.557 68.294 L1R2 17.480 0.020 L2R1 10.340 0.300 1.684 19.252 L2R2 5.499 0.327 L3R1 12.508 0.560 1.666 20.312 L3R2 11.432 0.415 L4R1 -10.567 0.300 1.683 19.322 L4R2 -26.199 0.015 L5R1 187.898 1.004 1.681 19.462 L5R2 -5.083 0.643 L6R1 -4.687 0.400 1.6838 19.25 L6R2 -16.913 0.527 L7R1 -9.714 1.017 1.5377 56.05 L7R2 -4.838 0.824 L8R1 -11.398 0.450 1.5657 42.47 L8R2 -16.039 0.086 IRCF 1.00E+18 0.334 1.5200 64.20 1.00E+18 0.448

[0413] Table 72

[0414] FL 7.292 Fno 1.38 viewing angle 79.50 TTL(INF) 9.188 sensor size 12.492 FB 0.782

[0415] Table 73

[0416] L1 7.14 L2 -19.61 L3 -383.41 L4 -40.78 L5 13.82 L6 -78.72 L7 14.86 L8 -5.99

[0417] Table 74

[0418] condition expression fifteenth example Fno < 2.2 1.38 HFOV < 45 39.75 vd1 > 45 68.29 vd6 < 40 19.25 vd1 - vd2 > 10 49.04 0.3 < F1 / FL < 4.3 0.979 0.5 < |F8 / FL| < 1.1 0.822 0.8 < F L1-L5 / FL < 1.4 1.046 0.5 < |F L6-L8 / F L1-L5 | < 3.9 1.405 2.5 < ∑|FL / F(i)| < 5.0 3.919 0.4 < D L6-L8 / ImgH < 1.0 0.779 5 < TTL / D L6 <28]] 22.970 0 < (R3+R4) / (R3-R4) < 10.0 3.211 0 < (R9+R10) / (R9-R10) < 3.5 0.933 -16 < (R7+R8) / (R7-R8) < 2 -2.183 -10 < (R11+R12) / (R11-R12) < 0 -1.820 0 < R13 / R14 < 4.0 1.924 Nd2 < 1.75 1.684 Nd4 < 1.75 1.683 Nd6 < 1.75 1.684 200 < ∑vd(i) < 380 264.40 TTL / ImgH < 2.5 1.471 TTL / FL < 2.0 1.260 TTL / BFL < 15 11.745

[0419] Table 75

[0420]

[0421]

[0422] Aberrations in the fifteenth example are shown in Fig. 45 Fig. 46 An RMS stop radius chart in the fifteenth example is shown. According to the camera module 11 of the fifteenth example, by making the lens parameters different from the lens parameters of the first example, it is possible to further improve the design freedom of the camera module 11 while obtaining the same effects as the first example.

[0423] In the description of embodiments of the disclosure, it will be understood that terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are to be interpreted as referring to the directions or positions described or shown in the figures being discussed. These relative terms are used only to simplify the description of the disclosure and do not indicate or imply that the devices or elements referred to must have a particular orientation or must be constructed or operated in a particular orientation. Therefore, these terms cannot be used to limit the disclosure.

[0424] ​Further, terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance or significance nor are used to indicate the number of such features. Thus, features defined with "first" and "second" can include one or more of such features. In the description of the disclosure, "a plurality of" means "two or more" unless otherwise specified or limited.

[0425] In the description of embodiments of the disclosure, unless otherwise specified or limited, the terms "mounting", "connecting", "coupling" and the like are used broadly, and can be, for example, fixed connection, detachable connection or integral connection; can also be mechanical or electrical connection; can also be direct connection or indirect connection via intermediate structure; can also be internal communication of two elements as can be understood by those skilled in the art according to the specific circumstances.

[0426] In embodiments of the disclosure, unless otherwise specified or limited, the structure in which the first feature is "on" or "under" the second feature can include an embodiment in which the first feature is in direct contact with the second feature, and can also include an embodiment in which the first feature and the second feature are not in direct contact with each other but are in contact via additional features formed therebetween. In addition, the first feature "on", "above" or "on top of" the second feature can include an embodiment in which the first feature is orthogonally or obliquely "on", "above" or "on top of" the second feature, or simply means that the height of the first feature is higher than the height of the second feature; while the first feature "under", "below" or "underneath" the second feature can include an embodiment in which the first feature is orthogonally or obliquely "under", "below" or "underneath" the second feature, or simply means that the height of the first feature is lower than the height of the second feature.

[0427] In the above description, various embodiments and examples are provided to realize different structures of the disclosure. In order to simplify the disclosure, certain elements and arrangements are described above. However, these elements and arrangements are only as examples and are not intended to limit the disclosure. In addition, reference numerals and / or letters of the drawings can be repeated in different examples of the disclosure. Such repetition is for simplicity and clarity, and does not involve the relationship between different embodiments and / or arrangements. In addition, the disclosure provides examples of different processes and materials. However, those skilled in the art should understand that other processes and / or materials can also be applied.

[0428] References throughout this specification to "one implementation", "some implementations", "one example implementation", "one example", "one specific example" or "some examples" means that a particular feature, structure, material or characteristic is included in at least one implementation or example of the disclosure. Therefore, appearances of such phrases in various places throughout this specification are not necessarily intended to refer to the same implementation or example of the disclosure. Furthermore, particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more implementations or examples.

[0429] Any processes or methods described throughout the flow diagrams or otherwise described herein can be understood as including one or more modules, segments, or portions of code for implementing specific logical functions or steps in the processes. The scope of preferred implementations of the disclosure encompasses other implementations in which the functions can be accomplished by a different sequence of steps, a different sequence of sequence, including in a substantially similar sequence, or in reverse sequence.

[0430] The logic and / or steps described in other descriptions herein or shown in the flow diagrams, for example, specific sequences of executable instructions for implementing the logical functions, can be specifically implemented in any computer readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch instructions from the instruction execution system, apparatus, and device and execute the instructions. In the context of this specification, a "computer-readable medium" can be any means that can include, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples of the computer readable medium include, but are not limited to: an electronic connection (electronic device) having one or more wires; a portable computer diskette (magnetic device); a random access memory (RAM); a read-only memory (ROM); an erasable programmable read-only memory (EPROM or flash memory); an optical fiber device; and a portable compact disc read-only memory (CDROM). Furthermore, the computer readable medium can even be paper or other suitable medium upon which the program can be printed, as the program can be electronically captured, for example, by optically scanning the paper or other suitable medium, then electronically converted into a form that can be further processed by the instruction execution system, apparatus, or device, and then stored in computer memory, if necessary.

[0431] It should be understood that each part of the present disclosure can be realized by hardware, software, firmware, or a combination thereof. In the above-described embodiments, a plurality of steps or methods can be realized by software or firmware stored in the memory, and can be executed by an appropriate instruction execution system. For example, if the plurality of steps or methods are realized by hardware, in another embodiment, these steps or methods can be realized by one or a combination of the following technologies known in the art: discrete logic circuit having a logic gate circuit for implementing a data signal, application specific integrated circuit having an appropriate combination of logic gate circuits, programmable gate array (PGA), field programmable gate array (FPGA), etc.

[0432] Those skilled in the art will understand that all or part of the steps in the above-described exemplary methods of the present disclosure can be implemented by using program commands related hardware. The program can be stored in a computer readable storage medium, and when running on a computer, the program includes a combination of one or more steps in the method embodiments of the present disclosure.

[0433] In addition, each functional unit of the embodiments of the present disclosure can be integrated in one processing module, or these units can be physically independent, or two or more units are integrated in one processing module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, the integrated module can be stored in a computer readable storage medium.

[0434] The above-mentioned storage medium can be a read-only memory, a magnetic disk, a CD, etc.

[0435] Although the embodiments of the present disclosure have been shown and described, those skilled in the art will understand that these embodiments are illustrative, cannot be interpreted as limiting the present disclosure, and changes, modifications, substitutions and variations of the embodiments can be made without departing from the scope of the present disclosure.

Claims

1. An imaging lens assembly, the imaging lens assembly comprising a total of eight lenses, wherein, The eight lenses are arranged sequentially from the object side to the image side, including: A first lens having positive refractive power and having its convex surface facing the object; A second lens with negative refractive power; Third lens; Fourth lens; A fifth lens with positive refractive power; The sixth lens; The seventh lens; and An eighth lens that has negative refractive power and is concave near the optical axis on the surface of the object side; The imaging lens assembly includes an aperture stop, which is configured to be closer to the object than at least one of the first to eighth lenses; Wherein, at least one lens, which is positioned closer to the image than the aperture stop, has a non-rotationally symmetric aspherical surface; wherein, the non-rotationally symmetric aspherical surface is symmetric with respect to the X-axis orthogonal to the optical axis and the Y-axis orthogonal to both the X-axis and the optical axis; The imaging lens assembly is configured to satisfy: Fno < 2.2, HFOV < 45°, νd1 > 45, νd6 < 40, νd1 - νd2 > 10, Wherein, Fno is the F-number of the imaging lens assembly, HFOV is the half-angle of the diagonal length of the effective pixel area of ​​the imaging lens assembly corresponding to the imaging surface, νd1 is the Abbe number of the first lens, νd2 is the Abbe number of the second lens, and νd6 is the Abbe number of the sixth lens. 0.5 < |F L6-L8 / F L1-L5 | < 3.9, 2.5 < Σ|FL / F(i)| < 5.0, Where FL is the focal length of the imaging lens assembly, F L1-L5 It is the combined focal length of the first lens to the fifth lens, F L6-L8 F(i) is the combined focal length of the sixth lens to the eighth lens, and F(i) is the focal length of the i-th lens, where the value of i ranges from 1 to 8. 0 < (R3 + R4) / (R3 - R4) < 10.0, 0 < (R9 + R10) / (R9 - R10) < 3.5, Wherein, R3 is the radius of curvature of the object-side surface of the second lens, R4 is the radius of curvature of the image-side surface of the second lens, R9 is the radius of curvature of the object-side surface of the fifth lens, and R10 is the radius of curvature of the image-side surface of the fifth lens.

2. The imaging lens assembly according to claim 1, wherein, The imaging lens assembly is configured to satisfy: 0.3 < F1 / FL < 4.3, 0.5 < |F8 / FL| < 1.1, 0.8 < F L1-L5 / FL < 1.4, Wherein, FL is the focal length of the imaging lens assembly, F1 is the focal length of the first lens, F8 is the focal length of the eighth lens, and F... L1-L5 It is the combined focal length of the first lens to the fifth lens.

3. The imaging lens assembly according to claim 1, wherein, The imaging lens assembly is configured to satisfy: 0.4 < D L6-L8 / ImgH < 1.0, 5 < TTL / D L6 < 28, Among them, D L6-L8 It is the length between the object-side surface of the sixth lens and the image-side surface of the eighth lens on the optical axis; ImgH is the half-diagonal length of the effective pixel area of ​​the imaging surface; TTL is the length on the optical axis from the object-side surface of the first lens to the focal point of the imaging lens assembly; D L6 It is the length between the object-side surface and the image-side surface of the sixth lens on the optical axis.

4. The imaging lens assembly according to claim 1, wherein, The imaging lens assembly is configured to satisfy: -16 < (R7 + R8) / (R7 - R8) < 2, -10 < (R11 + R12) / (R11 - R12) < 0, 0 < R13 / R14 < 4.0, Wherein, R7 is the radius of curvature of the object-side surface of the fourth lens, R8 is the radius of curvature of the image-side surface of the fourth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, R12 is the radius of curvature of the image-side surface of the sixth lens, R13 is the radius of curvature of the object-side surface of the seventh lens, and R14 is the radius of curvature of the image-side surface of the seventh lens.

5. The imaging lens assembly according to claim 1, wherein, The imaging lens assembly is configured to satisfy: Nd2 < 1.75, Nd4 < 1.75, Nd6 < 1.75, 200 < Σνd(i) < 380, Wherein, Nd2 is the refractive index of the second lens at the d-line, Nd4 is the refractive index of the fourth lens at the d-line, Nd6 is the refractive index of the sixth lens at the d-line, and νd(i) is the Abbe number of the i-th lens, with i ranging from 1 to 8.

6. The imaging lens assembly according to claim 1, wherein, The imaging lens assembly is configured to satisfy: TTL / ImgH < 2.5, TTL / FL < 2.0, TTL / BFL < 15, Wherein, TTL is the length along the optical axis from the object-side surface of the first lens to the focal point of the imaging lens assembly, ImgH is the half-diagonal length of the effective pixel area of ​​the imaging surface, and BFL is the distance from the object-side surface of the filter disposed between the imaging lens assembly and the imaging surface to the imaging surface.

7. The imaging lens assembly according to claim 1, wherein, The eighth lens has an aspherical shape with an inflection point and is made of plastic.

8. The imaging lens assembly according to claim 1, wherein, The third lens has positive refractive power, the fourth lens has negative refractive power, the sixth lens has negative refractive power, and the seventh lens has positive refractive power.

9. The imaging lens assembly according to claim 1, wherein, The third lens has positive refractive power, the fourth lens has positive refractive power, the sixth lens has positive refractive power, and the seventh lens has positive refractive power.

10. The imaging lens assembly according to claim 1, wherein, The third lens has positive refractive power, the fourth lens has negative refractive power, the sixth lens has positive refractive power, and the seventh lens has positive refractive power.

11. The imaging lens assembly according to claim 1, wherein, The third lens has positive refractive power, the fourth lens has positive refractive power, the sixth lens has negative refractive power, and the seventh lens has positive refractive power.

12. The imaging lens assembly according to claim 1, wherein, The third lens has positive refractive power, the fourth lens has negative refractive power, the sixth lens has positive refractive power, and the seventh lens has negative refractive power.

13. The imaging lens assembly according to claim 1, wherein, The third lens has negative refractive power, the fourth lens has negative refractive power, the sixth lens has negative refractive power, and the seventh lens has positive refractive power.

14. The imaging lens assembly according to claim 1, wherein, The aperture stop is configured to be closer to the object than the image-side surface of the first lens.

15. A camera module, comprising: The imaging lens assembly according to any one of claims 1 to 14; and An image sensor including the imaging surface.

16. The camera module according to claim 15, wherein, The camera module includes a filter disposed between the imaging lens assembly and the image sensor.

17. An imaging device, comprising: The camera module according to claim 15 or 16; and A housing that accommodates the camera module.

Images