Human-eye-imitating lens

Abstract

The invention provides a human-eye-imitating lens, and the lens sequentially comprises a first lens group from the object side to the image side, the first lens group sequentially comprises a first lens to an eleventh lens from the object side to the image side of the human-eye-imitating lens, and the combined focal length of the first lens group is negative; the second lens group sequentially comprises a twelfth lens to a seventeenth lens from the object side to the image side of the human eye imitating lens, and the combined focal length of the second lens group is positive; wherein the first lens to the seventeenth lens are spherical lenses; the distance TTL from the object side surface of the first lens to the imaging surface of the human-eye-imitating lens on the optical axis of the human-eye-imitating lens and the effective focal length f of the human-eye-imitating lens meet the following conditions: 24.0 lt; tTL / flt; 34.9). The problem that in the prior art, miniaturization and high image quality of a human-eye-imitating lens are difficult to consider at the same time is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging devices, and more particularly, to a humanoid eye lens. Background Art

[0002] The humanoid eye lens is a core component for performance testing of AR and VR modules. It uses a large number of lenses. Especially for a humanoid eye lens with seventeen lenses, the lens volume is relatively large. When reducing the lens size, the influence on the optical path is significant, making it difficult to ensure the imaging quality and the detection accuracy of AR and VR modules. Therefore, it is difficult to miniaturize the lens, and thus it is difficult to assemble it in miniaturized products. Therefore, how to control the total length and optical parameters of the humanoid eye lens and reduce the lens volume while ensuring high image quality is a very important issue. Summary of the Invention

[0003] The main object of the present invention is to provide a humanoid eye lens to solve the problem in the prior art that it is difficult to balance the miniaturization and high image quality of the humanoid eye lens.

[0004] To achieve the above object, according to one aspect of the present invention, there is provided a humanoid eye lens, which sequentially includes from the object side to the image side of the humanoid eye lens: a first lens group, the first lens group sequentially includes a first lens to an eleventh lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the first lens group is negative; a second lens group, the second lens group sequentially includes a twelfth lens to a seventeenth lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the second lens group is positive; wherein, the first lens to the seventeenth lens are all spherical lenses; the distance TTL from the object side surface of the first lens to the imaging surface of the humanoid eye lens on the optical axis of the humanoid eye lens and the effective focal length f of the humanoid eye lens satisfy: 24.0 < TTL / f < 34.9.

[0005] According to another aspect of the present invention, a humanoid eye lens is provided, which sequentially includes from the object side to the image side of the humanoid eye lens: a first lens group, the first lens group sequentially includes a first lens to an eleventh lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the first lens group is negative; a second lens group, the second lens group sequentially includes a twelfth lens to a seventeenth lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the second lens group is positive; wherein, the combined focal length fg1 of the first lens group and the effective focal length f of the humanoid eye lens satisfy: 5.5 < fg1 / f < -1.5, and the combined focal length fg2 of the second lens group and the effective focal length f of the humanoid eye lens satisfy: 7.8 < fg2 / f < 9.3. The present application provides a humanoid eye lens with seventeen lenses, adopting a secondary imaging optical architecture. Since the field of view angle of the humanoid eye lens is relatively large, the combined focal lengths of the first lens group and the second lens group are reasonably allocated by using the secondary imaging optical architecture. The first lens group transmits large field of view light to the intermediate image plane, and the second lens group performs secondary imaging on the primary image plane, which is beneficial to reasonably control the light trend, control the total length of the humanoid eye lens, realize the miniaturization and light weight of the lens, and is also beneficial to the balance of aberrations such as field curvature, astigmatism, and spherical aberration of the humanoid eye lens, and improve the imaging quality of the humanoid eye lens.

[0006] Further, the combined focal length fg1 of the first lens group and the effective focal length f of the humanoid eye lens satisfy: 5.5 < fg1 / f < -1.5, and the combined focal length fg2 of the second lens group and the effective focal length f of the humanoid eye lens satisfy: 7.8 < fg2 / f < 9.3.

[0007] Further, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: -0.8 < f1 / f2 < 0.3.

[0008] Further, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 2.5 < (f4 + f3) / (f4 - f3) < 6.9.

[0009] Further, the effective focal length f5 of the fifth lens and the combined focal length fg1 of the first lens group satisfy: -5 < f5 / fg1 < 120.0.

[0010] Further, the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, and the effective focal length f8 of the eighth lens satisfy: -19.0 < (f6 + f7) / f8 < -7.8.

[0011] Further, the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the combined focal length fg1 of the first lens group satisfy: -6.3 < (f6 + f7 + f8) / fg1 < -3.5.

[0012] Furthermore, the effective focal lengths f10 of the tenth lens, f11 of the eleventh lens, and f9 of the ninth lens satisfy: 2.5 < |(f10 + f11) / f9| < 7.0.

[0013] Furthermore, the interval T1213 on the optical axis from the image side of the twelfth lens to the object side of the thirteenth lens satisfies: T1213 < 0.5 mm.

[0014] Furthermore, the center thickness CT12 of the twelfth lens and the center thickness CT13 of the thirteenth lens satisfy: 1.7 < CT12 / CT13 < 2.1.

[0015] Furthermore, the Abbe number of the thirteenth lens is less than the Abbe numbers of the twelfth, fourteenth, fifteenth, and sixteenth lenses, and the Abbe number of the seventeenth lens is less than the Abbe numbers of the twelfth, fourteenth, fifteenth, and sixteenth lenses.

[0016] Furthermore, the refractive index of the thirteenth lens is greater than the refractive indices of the twelfth, fourteenth, fifteenth, and sixteenth lenses, and the refractive index of the seventeenth lens is greater than the refractive indices of the twelfth, fourteenth, fifteenth, and sixteenth lenses.

[0017] Applying the technical solution of the present invention, from the object side to the image side of the humanoid eye-like lens, the humanoid eye-like lens sequentially includes a first lens group and a second lens group. The first lens group sequentially includes a first lens to an eleventh lens from the object side to the image side of the humanoid eye-like lens, and the combined focal length of the first lens group is negative; the second lens group sequentially includes a twelfth lens to a seventeenth lens from the object side to the image side of the humanoid eye-like lens, and the combined focal length of the second lens group is positive; wherein, the first lens to the seventeenth lens are all spherical lenses; the distance TTL on the optical axis from the object side of the first lens to the imaging surface of the humanoid eye-like lens and the effective focal length f of the humanoid eye-like lens satisfy: 24.0 < TTL / f < 34.9.

[0018] This application provides a humanoid eye-like lens with seventeen lenses, adopting a secondary imaging optical architecture. By restricting the positive and negative of the combined focal lengths of the first lens group and the second lens group, and keeping the telephoto ratio TTL / f of the humanoid eye-like lens, that is, within a reasonable range, the first lens group transmits the large-field-of-view light to the intermediate image plane, and the second lens group performs secondary imaging on the primary image plane, which is beneficial to reasonably control the light trend, control the total length of the humanoid eye-like lens while ensuring the imaging quality, realize the miniaturization and light weight of the lens, and at the same time can achieve a longer effective focal length with a shorter total lens length, expand the applicable scenarios of the lens, and improve the product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 Shows a schematic structural diagram of a humanoid eye lens according to an alternative embodiment of the present invention;

[0021] Figure 2 Shows a schematic structural diagram of a humanoid eye lens according to Embodiment 1 of the present invention;

[0022] Figures 3 to 6 Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and MTF curve of Embodiment 1 of the present invention;

[0023] Figure 7 Shows a schematic structural diagram of a humanoid eye lens according to Embodiment 2 of the present invention;

[0024] Figures 8 to 11 Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and MTF curve of Embodiment 2 of the present invention;

[0025] Figure 12 Shows a schematic structural diagram of a humanoid eye lens according to Embodiment 3 of the present invention;

[0026] Figures 13 to 16 Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and MTF curve of Embodiment 3 of the present invention;

[0027] Figure 17 Shows a schematic structural diagram of a humanoid eye lens according to Embodiment 4 of the present invention;

[0028] Figures 18 to 21 Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and MTF curve of Embodiment 4 of the present invention;

[0029] Figure 22 Shows a schematic structural diagram of a humanoid eye lens according to Embodiment 5 of the present invention;

[0030] Figures 23 to 26 Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and MTF curve of Embodiment 5 of the present invention.

[0031] Among them, the above-mentioned drawings include the following reference numerals:

[0032] STO, diaphragm; G1, the first lens group; G2, the second lens group; E1, the first lens; S1, the object side of the first lens; S2, the image side of the first lens; E2, the second lens; S3, the object side of the second lens; S4, the image side of the second lens; E3, the third lens; S5, the object side of the third lens; S6, the image side of the third lens; E4, the fourth lens; S7, the object side of the fourth lens; S8, the image side of the fourth lens; E5, the fifth lens; S9, the object side of the fifth lens; S10, the image side of the fifth lens; E6, the sixth lens; S11, the object side of the sixth lens; S12, the image side of the sixth lens; E7, the seventh lens; S13, the object side of the seventh lens; S14, the image side of the seventh lens; E8, the eighth lens; S15, the object side of the eighth lens; S16, the image side of the eighth lens; E9, the ninth lens; S17, the object side of the ninth lens; S18, the image side of the ninth lens; E10, the tenth lens; S19, the object side of the tenth lens; S20, the image side of the tenth lens; E11, the eleventh lens; S21, the object side of the eleventh lens; S22, the image side of the eleventh lens; E12, the twelfth lens; S23, the object side of the twelfth lens; S24, the image side of the twelfth lens; E13, the thirteenth lens; S25, the object side of the thirteenth lens; S26, the image side of the thirteenth lens; E14, the fourteenth lens; S27, the object side of the fourteenth lens; S28, the image side of the fourteenth lens; E15, the fifteenth lens; S29, the object side of the fifteenth lens; S30, the image side of the fifteenth lens; E16, the sixteenth lens; S31, the object side of the sixteenth lens; S32, the image side of the sixteenth lens; E17, the seventeenth lens; S33, the object side of the seventeenth lens; S34, the image side of the seventeenth lens. Detailed implementation mode

[0033] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0034] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present invention.

[0036] In the drawings, for the sake of clarity, the thickness, dimensions, and shape of the lens are slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are presented by way of example. That is, the spherical or aspherical shapes are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn to an exact scale.

[0037] In this text, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The determination of the surface shape in the paraxial region can be based on the judgment method of those with ordinary knowledge in the field, and the convexity and concavity are judged by the positive or negative value of the R value (the R value refers to the radius of curvature in the paraxial region, usually the R value in the lens database of optical software). For the object side, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the image side, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0038] To solve the problem in the prior art that it is difficult to balance the miniaturization and high image quality of a humanoid eye lens, the present invention provides a humanoid eye lens.

[0039] First Embodiment

[0040] As Figures 1 to 26 shown, from the object side to the image side of the humanoid eye lens, the humanoid eye lens sequentially includes a first lens group and a second lens group. The first lens group sequentially includes a first lens to an eleventh lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the first lens group is negative; the second lens group sequentially includes a twelfth lens to a seventeenth lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the second lens group is positive; among them, the first lens to the seventeenth lens are all spherical lenses; the distance TTL from the object side of the first lens to the imaging surface of the humanoid eye lens on the optical axis and the effective focal length f of the humanoid eye lens satisfy: 24.0 < TTL / f < 34.9.

[0041] This application provides a humanoid eye lens with seventeen lenses, adopting a secondary imaging optical architecture. By restricting the positive and negative of the combined focal lengths of the first lens group and the second lens group, and keeping the telephoto ratio TTL / f of the humanoid eye lens, that is, within a reasonable range, the first lens group transmits the large field of view light to the intermediate image plane, and the second lens group performs secondary imaging on the primary image plane, which is conducive to reasonably controlling the light trend. While ensuring the imaging quality, it controls the total length of the humanoid eye lens, realizes the miniaturization and light weight of the lens, and can also achieve a longer effective focal length with a shorter total lens length, expanding the applicable scenarios of the lens and improving the product competitiveness.

[0042] Preferably, 24.0 < TTL / f < 34.9.

[0043] In this embodiment, the combined focal length fg1 of the first lens group and the effective focal length f of the humanoid eye lens satisfy: 5.5 < fg1 / f < -1.5, and the combined focal length fg2 of the second lens group and the effective focal length f of the humanoid eye lens satisfy: 7.8 < fg2 / f < 9.3. By limiting fg1 / f and fg2 / f within a reasonable range, since the field of view angle of the humanoid eye lens is relatively large, the combined focal lengths of the first lens group and the second lens group are reasonably allocated by using a two-stage imaging optical architecture. The first lens group transmits the large field of view light to the intermediate image plane, and the second lens group performs secondary imaging on the primary image plane, which is beneficial to the balance of aberrations such as field curvature, astigmatism, and spherical aberration of the humanoid eye lens and improves the imaging quality of the humanoid eye lens. Preferably, 5.5 < fg1 / f < -1.5, 7.8 < fg2 / f < 9.3.

[0044] In this embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: -0.8 < f1 / f2 < 0.3. By limiting f1 / f2 within a reasonable range, it is beneficial to reasonably allocate the optical power of the first lens and the second lens, reduce the deflection angle of the incident light, and reduce the lens sensitivity. At the same time, it avoids too large a surface tilt angle, thus ensuring good processability and machinability of the first lens and the second lens. Preferably, -0.8 < f1 / f2 < 0.3.

[0045] In this embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 2.5 < (f4 + f3) / (f4 - f3) < 6.9. By limiting (f4 + f3) / (f4 - f3) within a reasonable range, the third lens is a positive lens and the fourth lens is a positive lens. Reasonably allocating the optical power of the third and fourth lenses can further smooth the light, reduce the light deflection angle, and balance various aberrations such as spherical aberration, coma, and astigmatism. Preferably, 2.5 < (f4 + f3) / (f4 - f3) < 6.9.

[0046] In this embodiment, the effective focal length f5 of the fifth lens and the combined focal length fg1 of the first lens group satisfy: -5 < f5 / fg1 < 120.0. By limiting f5 / fg1 within a reasonable range, the fifth lens is a positive lens, and the optical power is appropriately reduced compared to the optical powers of the first four lenses. Reasonably allocating the proportion of the optical power of the fifth lens is beneficial to balancing the distortion and field curvature of the humanoid eye lens. Preferably, -5 < f5 / fg1 < 120.0.

[0047] In this embodiment, the effective focal lengths f6 of the sixth lens, f7 of the seventh lens, and f8 of the eighth lens satisfy: -19.0 < (f6 + f7) / f8 < -7.8. By restricting (f6 + f7) / f8 within a reasonable range, the spherical aberration contributions of the sixth to eighth lenses can be reasonably controlled within a reasonable level, enabling good imaging quality to be obtained for the on-axis field of view. Preferably, -19.0 < (f6 + f7) / f8 < -7.8.

[0048] In this embodiment, the effective focal lengths f6 of the sixth lens, f7 of the seventh lens, f8 of the eighth lens, and the combined focal length fg1 of the first lens group satisfy: -6.3 < (f6 + f7 + f8) / fg1 < -3.5. By restricting (f6 + f7 + f8) / fg1 within a reasonable range and rationally allocating the proportion of the optical powers of the sixth, seventh, and eighth lenses in the first lens group to avoid excessive concentration of optical power, the sensitivity of the lenses can be effectively reduced, the alignment difficulty can be decreased, and at the same time, the spherical aberration, chromatic aberration, astigmatism, etc. of the entire humanoid eye lens can be balanced. Preferably, -6.3 < (f6 + f7 + f8) / fg1 < -3.5.

[0049] In this embodiment, the effective focal lengths f10 of the tenth lens, f11 of the eleventh lens, and f9 of the ninth lens satisfy: 2.5 < |(f10 + f11) / f9| < 7.0. By restricting |(f10 + f11) / f9| within a reasonable range and rationally distributing the optical powers of the tenth and eleventh lenses, the angle of the light rays emerging from the ninth lens can be slowed down, enabling the light rays to enter the twelfth lens more gently, ensuring good processability of the ninth, tenth, and eleventh lenses, and at the same time correcting the aberration. Preferably, 2.5 < |(f10 + f11) / f9| < 7.0.

[0050] In this embodiment, the interval T1213 on the optical axis from the image side of the twelfth lens to the object side of the thirteenth lens satisfies: T1213 < 0.5 mm. By restricting T1213 within a reasonable range, on the one hand, it is beneficial to balance the spherical aberration, chromatic aberration, and astigmatism of the humanoid eye lens and improve the imaging quality; on the other hand, it leaves a certain margin for structural design and alignment, reduces the structural design difficulty, and increases the alignment success rate. Preferably, T1213 < 0.5 mm.

[0051] In this embodiment, the center thickness CT12 of the twelfth lens and the center thickness CT13 of the thirteenth lens satisfy: 1.7 < CT12 / CT13 < 2.1. By restricting CT12 / CT13 within a reasonable range and reasonably controlling the center thicknesses of the twelfth lens and the thirteenth lens on the optical axis, not only can the total length of the humanoid eye lens be effectively reduced to ensure the thinness and lightness of the lens, but also the processing sensitivity of the humanoid eye lens can be reduced. Preferably, 1.7 < CT12 / CT13 < 2.1.

[0052] In this embodiment, the Abbe number of the thirteenth lens is less than that of the twelfth, fourteenth, fifteenth, and sixteenth lenses, and the Abbe number of the seventeenth lens is less than that of the twelfth, fourteenth, fifteenth, and sixteenth lenses. By reasonably configuring the materials of the second lens group, on the one hand, chromatic aberration can be better corrected to avoid problems such as purple fringing during shooting, and on the other hand, costs can be better saved.

[0053] In this embodiment, the refractive index of the thirteenth lens is greater than that of the twelfth, fourteenth, fifteenth, and sixteenth lenses, and the refractive index of the seventeenth lens is greater than that of the twelfth, fourteenth, fifteenth, and sixteenth lenses. By reasonably distributing the refractive indices of the lenses in the second lens group, it is beneficial to balance various aberrations such as spherical aberration, astigmatism, field curvature, and coma of the entire humanoid eye lens, improve the imaging quality, can also reasonably control the trend of the entire light, reduce the system sensitivity, and is beneficial to the miniaturization of the lens.

[0054] Second Embodiment

[0055] As Figures 1 to 26 shown, from the object side to the image side of the humanoid eye lens, the humanoid eye lens sequentially includes a first lens group and a second lens group. The first lens group sequentially includes a first lens to an eleventh lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the first lens group is negative; the second lens group sequentially includes a twelfth lens to a seventeenth lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the second lens group is positive; wherein, the combined focal length fg1 of the first lens group and the effective focal length f of the humanoid eye lens satisfy: 5.5 < fg1 / f < -1.5, and the combined focal length fg2 of the second lens group and the effective focal length f of the humanoid eye lens satisfy: 7.8 < fg2 / f < 9.3.

[0056] The present application provides a humanoid eye lens with seventeen lenses, adopting a secondary imaging optical architecture. Since the humanoid eye lens has a relatively large field of view, the secondary imaging optical architecture is used to reasonably distribute the combined focal lengths of the first lens group and the second lens group. The first lens group transmits the large-field light to the intermediate image plane, and the second lens group performs secondary imaging on the primary image plane, which is beneficial to reasonably control the light trend, control the total length of the humanoid eye lens, realize the miniaturization and light weight of the lens, and is also beneficial to the balance of aberrations such as field curvature, astigmatism, and spherical aberration of the humanoid eye lens, and improve the imaging quality of the humanoid eye lens.

[0057] Preferably, 5.5 < fg1 / f < -1.5.

[0058] Preferably, 7.8 < fg2 / f < 9.3.

[0059] This embodiment may also include other conditional expressions in the first embodiment, which will not be elaborated here one by one.

[0060] Optionally, the above humanoid eye lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The humanoid eye lens in the present application may adopt multiple lenses, such as the six lenses mentioned above. By reasonably distributing the effective focal lengths, surface shapes, central thicknesses of the lenses, and the on-axis distances between the lenses, etc., the aperture of the humanoid eye lens can be effectively increased, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, making the humanoid eye lens more conducive to production and processing and applicable to portable electronic devices such as smart phones.

[0061] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses constituting the humanoid eye lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiment, the humanoid eye lens is not limited to including six lenses. If necessary, the humanoid eye lens may also include other numbers of lenses.

[0062] Figure 1 The structural schematic diagram of a humanoid eye lens of the present application is shown. Figure 1 Parameters such as CT12, T1213, CT13, etc. are also marked in it to clearly and intuitively understand the meaning of the parameters. For the convenience of showing the structure of the humanoid eye lens and the specific surface shape, these parameters will no longer be shown in the drawings when specific embodiments are described later.

[0063] The following further describes with reference to the drawings the specific surface shapes and parameter examples of the humanoid eye lens applicable to the above embodiments.

[0064] It should be noted that any one of the following Embodiment 1 to Embodiment 5 is applicable to all embodiments of the present application.

[0065] Embodiment 1

[0066] As Figures 2 to 6 shown, a humanoid eye lens according to Embodiment 1 of the present application is described.

[0067] As Figure 2 shown, the humanoid eye lens sequentially includes a diaphragm STO, a first lens group G1, and a second lens group G2 from the object side to the image side. The first lens group G1 sequentially includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, and an eleventh lens E11 from the object side to the image side. The second lens group G2 sequentially includes a twelfth lens E12, a thirteenth lens E13, a fourteenth lens E14, a fifteenth lens E15, a sixteenth lens E16, and a seventeenth lens E17 from the object side to the image side.

[0068] As Figure 2 shown, the first lens group G1 has a negative optical power, and the second lens group G2 has a positive optical power. The object side surface of the first lens is S1, the image side surface of the first lens is S2, the object side surface of the second lens is S3, the image side surface of the second lens is S4, the object side surface of the third lens is S5, the image side surface of the third lens is S6, the object side surface of the fourth lens is S7, the image side surface of the fourth lens is S8, the object side surface of the fifth lens is S9, the image side surface of the fifth lens is S10, the object side surface of the sixth lens is S11, the image side surface of the sixth lens is S12, the object side surface of the seventh lens is S13, the image side surface of the seventh lens is S14, the object side surface of the eighth lens is S15, the image side surface of the eighth lens is S16, the object side surface of the ninth lens is S17, the image side surface of the ninth lens is S18, the object side surface of the tenth lens is S19, the image side surface of the tenth lens is S20, the object side surface of the eleventh lens is S21, the image side surface of the eleventh lens is S22, the object side surface of the twelfth lens is S23, the image side surface of the twelfth lens is S24, the object side surface of the thirteenth lens is S25, the image side surface of the thirteenth lens is S26, the object side surface of the fourteenth lens is S27, the image side surface of the fourteenth lens is S28, the object side surface of the fifteenth lens is S29, the image side surface of the fifteenth lens is S30, the object side surface of the sixteenth lens is S31, the image side surface of the sixteenth lens is S32, the object side surface of the seventeenth lens is S33, and the image side surface of the seventeenth lens is S34. The light from the object passes through S1 to S34 and forms an image on the imaging surface IMG.

[0069] Table 1 shows the basic structural parameter table of the humanoid eye lens in the first embodiment, where the units of the radius of curvature, thickness / distance, and semi-aperture are all millimeters (mm).

[0070] Surface number Surface type Radius of curvature Thickness Refractive index Abbe number Semi-aperture OBJ Spherical surface Infinity Infinity STO Spherical surface Infinity 1.04 2.00 S1 Spherical surface -269.19 18.00 1.72 29.51 6.75 S2 Spherical surface -23.77 0.49 15.91 S3 Spherical surface -111.86 3.00 1.96 17.47 18.36 S4 Spherical surface 156.44 4.05 20.35 S5 Spherical surface -98.70 7.78 1.81 40.95 21.83 S6 Spherical surface -32.47 0.49 23.18 S7 Spherical surface -215.56 5.88 1.88 40.81 27.16 S8 Spherical surface -57.24 0.50 27.61 S9 Spherical surface 86.97 7.20 1.60 65.46 30.00 S10 Spherical surface -352.44 46.64 30.00 S11 Spherical surface 38.21 11.65 1.80 42.25 30.00 S12 Spherical surface 125.70 0.50 29.02 S13 Spherical surface 26.69 13.16 1.74 49.24 23.77 S14 Spherical surface 55.01 4.36 19.58 S15 Spherical surface 107.70 3.00 1.80 44.30 15.48 S16 Spherical surface 12.36 12.99 11.42 S17 Spherical surface -15.42 5.71 1.67 54.66 10.05 S18 Spherical surface 164.14 9.14 11.49 S19 Spherical surface -146.88 17.32 1.85 32.31 15.03 S20 Spherical surface -37.10 23.21 18.95 S21 Spherical surface 69.22 18.00 1.81 22.70 22.65 S22 Spherical surface 4414.43 35.24 21.63 S23 Spherical surface 180.89 6.09 1.59 68.50 17.76 S24 Spherical surface -35.09 0.48 17.59 S25 Spherical surface -33.09 3.00 1.85 23.80 17.38 S26 Spherical surface 41.77 0.49 17.39 S27 Spherical surface 43.59 6.96 1.57 71.30 17.55 S28 Spherical surface -57.96 0.50 17.73 S29 Spherical surface 30.26 7.79 1.59 68.50 17.60 S30 Spherical surface -88.94 10.28 17.11 S31 Spherical surface -38.43 3.00 1.65 39.55 12.84 S32 Spherical surface 26.28 20.05 12.57 S33 Spherical surface 88.20 4.16 1.81 22.70 17.39 S34 Spherical surface -79.04 37.06 17.45 IMG Spherical surface Infinity 0.00 12.22

[0071]

[0072] Figure 3 shows the axial chromatic aberration curve of the humanoid eye lens in the first embodiment, which represents the deviation of the focus points of light rays with different wavelengths after passing through the humanoid eye lens. Figure 4 shows the astigmatism curve of the humanoid eye lens in the first embodiment, which represents the curvature of the meridional image plane and the sagittal image plane. Figure 5 shows the distortion curve of the humanoid eye lens in the first embodiment, which represents the distortion magnitude values corresponding to different field angles. Figure 6 shows the MTF curve of the humanoid eye lens in the first embodiment, which represents the modulus of the modulation transfer function of the humanoid eye lens at different spatial frequencies.

[0073] According to Figures 3 to 6 it can be known that the humanoid eye lens given in the first embodiment can achieve good imaging quality.

[0074] The second embodiment

[0075] As Figures 7 to 11 shown, the humanoid eye lens in the second embodiment of the present application is described.

[0076] As Figure 7 shown, the humanoid eye lens sequentially includes a diaphragm STO, a first lens group G1, and a second lens group G2 from the object side to the image side. The first lens group G1 sequentially includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, and an eleventh lens E11 from the object side to the image side. The second lens group G2 sequentially includes a twelfth lens E12, a thirteenth lens E13, a fourteenth lens E14, a fifteenth lens E15, a sixteenth lens E16, and a seventeenth lens E17 from the object side to the image side. In this embodiment, the image side surface S24 of the twelfth lens and the object side surface S25 of the thirteenth lens form a cemented surface. Therefore Figure 7 both S24 and S25 in represent this cemented surface. The cemented lens can further reduce the field curvature, correct the off-axis aberration of the humanoid eye lens, fully correct various aberrations of the humanoid eye lens, and improve the resolution and optimize optical performances such as distortion and CRA (chief ray angle) on the premise of a compact structure.

[0077] As Figure 7As shown, the first lens group G1 has a negative optical power, and the second lens group G2 has a positive optical power. The object side of the first lens is S1, the image side of the first lens is S2, the object side of the second lens is S3, the image side of the second lens is S4, the object side of the third lens is S5, the image side of the third lens is S6, the object side of the fourth lens is S7, the image side of the fourth lens is S8, the object side of the fifth lens is S9, the image side of the fifth lens is S10, the object side of the sixth lens is S11, the image side of the sixth lens is S12, the object side of the seventh lens is S13, the image side of the seventh lens is S14, the object side of the eighth lens is S15, the image side of the eighth lens is S16, the object side of the ninth lens is S17, the image side of the ninth lens is S18, the object side of the tenth lens is S19, the image side of the tenth lens is S20, the object side of the eleventh lens is S21, the image side of the eleventh lens is S22, the object side of the twelfth lens is S23, the image side of the twelfth lens is S24, the object side of the thirteenth lens is S25, the image side of the thirteenth lens is S26, the object side of the fourteenth lens is S27, the image side of the fourteenth lens is S28, the object side of the fifteenth lens is S29, the image side of the fifteenth lens is S30, the object side of the sixteenth lens is S31, the image side of the sixteenth lens is S32, the object side of the seventeenth lens is S33, and the image side of the seventeenth lens is S34. The light from the object passes through S1 to S34 and forms an image on the imaging surface IMG.

[0078] Table 2 shows the basic structural parameter table of the humanoid eye lens in the second embodiment. Among them, the units of the radius of curvature, thickness / distance, and semi-aperture are all millimeters (mm).

[0079]

[0080]

[0081] Table 2

[0082] Figure 8 shows the axial chromatic aberration curve of the humanoid eye lens in the second embodiment, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the humanoid eye lens. Figure 9 shows the astigmatism curve of the humanoid eye lens in the second embodiment, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 10 shows the distortion curve of the humanoid eye lens in the second embodiment, which represents the distortion magnitude values corresponding to different field angles. Figure 11 shows the MTF curve of the humanoid eye lens in the second embodiment, which represents the modulus of the modulation transfer function of the humanoid eye lens at different spatial frequencies.

[0083] According to Figures 8 to 11 it can be known that the humanoid eye lens given in the second embodiment can achieve good imaging quality.

[0084] Embodiment III

[0085] As Figures 12 to 16 shown, a humanoid eye lens according to Embodiment III of the present application is described.

[0086] As Figure 12 shown, the humanoid eye lens sequentially includes a diaphragm STO, a first lens group G1, and a second lens group G2 from the object side to the image side. The first lens group G1 sequentially includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, and an eleventh lens E11 from the object side to the image side. The second lens group G2 sequentially includes a twelfth lens E12, a thirteenth lens E13, a fourteenth lens E14, a fifteenth lens E15, a sixteenth lens E16, and a seventeenth lens E17 from the object side to the image side. In this embodiment, the image side surface S24 of the twelfth lens and the object side surface S25 of the thirteenth lens form a cemented surface. Therefore Figure 12 both S24 and S25 in represent this cemented surface. The cemented lens can further reduce the field curvature, correct the off-axis aberrations of the humanoid eye lens, fully correct various aberrations of the humanoid eye lens, and improve the resolution and optimize optical performances such as distortion and CRA (chief ray angle) on the premise of a compact structure.

[0087] As Figure 12As shown, the first lens group G1 has a negative optical power, and the second lens group G2 has a positive optical power. The object side of the first lens is S1, the image side of the first lens is S2, the object side of the second lens is S3, the image side of the second lens is S4, the object side of the third lens is S5, the image side of the third lens is S6, the object side of the fourth lens is S7, the image side of the fourth lens is S8, the object side of the fifth lens is S9, the image side of the fifth lens is S10, the object side of the sixth lens is S11, the image side of the sixth lens is S12, the object side of the seventh lens is S13, the image side of the seventh lens is S14, the object side of the eighth lens is S15, the image side of the eighth lens is S16, the object side of the ninth lens is S17, the image side of the ninth lens is S18, the object side of the tenth lens is S19, the image side of the tenth lens is S20, the object side of the eleventh lens is S21, the image side of the eleventh lens is S22, the object side of the twelfth lens is S23, the image side of the twelfth lens is S24, the object side of the thirteenth lens is S25, the image side of the thirteenth lens is S26, the object side of the fourteenth lens is S27, the image side of the fourteenth lens is S28, the object side of the fifteenth lens is S29, the image side of the fifteenth lens is S30, the object side of the sixteenth lens is S31, the image side of the sixteenth lens is S32, the object side of the seventeenth lens is S33, and the image side of the seventeenth lens is S34. The light from the object passes through S1 to S34 and forms an image on the imaging surface IMG.

[0088] Table 3 shows the basic structural parameter table of the humanoid eye lens in the third embodiment. Among them, the units of the radius of curvature, thickness / distance, and semi-aperture are all millimeters (mm).

[0089]

[0090]

[0091] Table 3

[0092] Figure 13 shows the axial chromatic aberration curve of the humanoid eye lens in the third embodiment, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the humanoid eye lens. Figure 14 shows the astigmatism curve of the humanoid eye lens in the third embodiment, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 15 shows the distortion curve of the humanoid eye lens in the third embodiment, which represents the distortion magnitude values corresponding to different field angles. Figure 16 shows the MTF curve of the humanoid eye lens in the third embodiment, which represents the modulus of the modulation transfer function of the humanoid eye lens at different spatial frequencies.

[0093] According to Figures 13 to 16 it can be known that the humanoid eye lens given in the third embodiment can achieve good imaging quality.

[0094] Embodiment 4

[0095] As Figures 17 to 21 shown, a humanoid eye lens of Embodiment 4 of the present application is described.

[0096] As Figure 17 shown, the humanoid eye lens sequentially includes a diaphragm STO, a first lens group G1, and a second lens group G2 from the object side to the image side. The first lens group G1 sequentially includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, and an eleventh lens E11 from the object side to the image side. The second lens group G2 sequentially includes a twelfth lens E12, a thirteenth lens E13, a fourteenth lens E14, a fifteenth lens E15, a sixteenth lens E16, and a seventeenth lens E17 from the object side to the image side. In this embodiment, the image side surface S24 of the twelfth lens and the object side surface S25 of the thirteenth lens form a cemented surface. Therefore Figure 17 both S24 and S25 in represent this cemented surface. The cemented lens can further reduce the field curvature and correct the off-axis aberrations of the humanoid eye lens, so that various aberrations of the humanoid eye lens are fully corrected. On the premise of a compact structure, the resolution can be improved, and the optical performances such as distortion and CRA (chief ray angle) can be optimized.

[0097] As Figure 17As shown, the first lens group G1 has a negative optical power, and the second lens group G2 has a positive optical power. The object side of the first lens is S1, the image side of the first lens is S2, the object side of the second lens is S3, the image side of the second lens is S4, the object side of the third lens is S5, the image side of the third lens is S6, the object side of the fourth lens is S7, the image side of the fourth lens is S8, the object side of the fifth lens is S9, the image side of the fifth lens is S10, the object side of the sixth lens is S11, the image side of the sixth lens is S12, the object side of the seventh lens is S13, the image side of the seventh lens is S14, the object side of the eighth lens is S15, the image side of the eighth lens is S16, the object side of the ninth lens is S17, the image side of the ninth lens is S18, the object side of the tenth lens is S19, the image side of the tenth lens is S20, the object side of the eleventh lens is S21, the image side of the eleventh lens is S22, the object side of the twelfth lens is S23, the image side of the twelfth lens is S24, the object side of the thirteenth lens is S25, the image side of the thirteenth lens is S26, the object side of the fourteenth lens is S27, the image side of the fourteenth lens is S28, the object side of the fifteenth lens is S29, the image side of the fifteenth lens is S30, the object side of the sixteenth lens is S31, the image side of the sixteenth lens is S32, the object side of the seventeenth lens is S33, and the image side of the seventeenth lens is S34. The light from the object passes through S1 to S34 and forms an image on the imaging surface IMG.

[0098] Table 4 shows the basic structural parameter table of the humanoid eye lens in the fourth embodiment, where the units of the radius of curvature, thickness / distance, and semi-aperture are all millimeters (mm).

[0099]

[0100]

[0101] Table 4

[0102] Figure 18 shows the axial chromatic aberration curve of the humanoid eye lens in the fourth embodiment, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the humanoid eye lens. Figure 19 shows the astigmatism curve of the humanoid eye lens in the fourth embodiment, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 20 shows the distortion curve of the humanoid eye lens in the fourth embodiment, which represents the distortion magnitude values corresponding to different field angles. Figure 21 shows the MTF curve of the humanoid eye lens in the fourth embodiment, which represents the modulus of the modulation transfer function of the humanoid eye lens at different spatial frequencies.

[0103] According to Figures 18 to 21 it can be known that the humanoid eye lens given in the fourth embodiment can achieve good imaging quality.

[0104] Embodiment 5

[0105] As Figures 22 to 26 shown, the humanoid eye lens of Embodiment 5 of the present application is described.

[0106] As Figure 22 shown, the humanoid eye lens sequentially includes a diaphragm STO, a first lens group G1, and a second lens group G2 from the object side to the image side. The first lens group G1 sequentially includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, and an eleventh lens E11 from the object side to the image side. The second lens group G2 sequentially includes a twelfth lens E12, a thirteenth lens E13, a fourteenth lens E14, a fifteenth lens E15, a sixteenth lens E16, and a seventeenth lens E17 from the object side to the image side.

[0107] As Figure 22 shown, the first lens group G1 has a negative optical power, and the second lens group G2 has a positive optical power. The object side surface of the first lens is S1, the image side surface of the first lens is S2, the object side surface of the second lens is S3, the image side surface of the second lens is S4, the object side surface of the third lens is S5, the image side surface of the third lens is S6, the object side surface of the fourth lens is S7, the image side surface of the fourth lens is S8, the object side surface of the fifth lens is S9, the image side surface of the fifth lens is S10, the object side surface of the sixth lens is S11, the image side surface of the sixth lens is S12, the object side surface of the seventh lens is S13, the image side surface of the seventh lens is S14, the object side surface of the eighth lens is S15, the image side surface of the eighth lens is S16, the object side surface of the ninth lens is S17, the image side surface of the ninth lens is S18, the object side surface of the tenth lens is S19, the image side surface of the tenth lens is S20, the object side surface of the eleventh lens is S21, the image side surface of the eleventh lens is S22, the object side surface of the twelfth lens is S23, the image side surface of the twelfth lens is S24, the object side surface of the thirteenth lens is S25, the image side surface of the thirteenth lens is S26, the object side surface of the fourteenth lens is S27, the image side surface of the fourteenth lens is S28, the object side surface of the fifteenth lens is S29, the image side surface of the fifteenth lens is S30, the object side surface of the sixteenth lens is S31, the image side surface of the sixteenth lens is S32, the object side surface of the seventeenth lens is S33, and the image side surface of the seventeenth lens is S34. The light from the object passes through S1 to S34 and is imaged on the imaging surface IMG.

[0108] Table 5 shows the basic structural parameter table of the humanoid eye lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and semi-aperture are all millimeters (mm).

[0109] Surface number Surface type Radius of curvature Thickness Refractive index Abbe number Semi-aperture OBJ Spherical surface Infinity Infinity STO Spherical surface Infinity 0.10 2.00 S1 Spherical surface 172.26 17.13 1.80 44.30 4.22 S2 Spherical surface -13.99 7.26 11.22 S3 Spherical surface -12.37 10.00 1.96 17.47 12.43 S4 Spherical surface -51.59 1.39 21.30 S5 Spherical surface -44.92 12.44 1.88 40.87 21.90 S6 Spherical surface -27.39 0.50 25.28 S7 Spherical surface -340.19 13.00 1.88 40.81 30.23 S8 Spherical surface -59.81 6.48 32.05 S9 Spherical surface 48.93 16.00 1.60 65.46 33.98 S10 Spherical surface 154.15 5.02 32.14 S11 Spherical surface 53.73 10.00 1.74 52.68 29.31 S12 Spherical surface 65.22 0.50 26.30 S13 Spherical surface 31.87 9.00 1.73 54.67 24.24 S14 Spherical surface 74.02 3.06 22.45 S15 Spherical surface 328.65 14.00 1.80 25.48 21.69 S16 Spherical surface 14.99 12.99 13.14 S17 Spherical surface -24.85 3.18 1.62 53.93 12.81 S18 Spherical surface 55.20 14.47 13.81 S19 Spherical surface 277.27 12.50 1.78 25.72 19.41 S20 Spherical surface -46.31 39.63 20.89 S21 Spherical surface 51.59 7.00 1.85 23.79 20.55 S22 Spherical surface 95.78 26.97 19.63 S23 Spherical surface 182.95 6.00 1.59 68.50 15.85 S24 Spherical surface -30.38 0.49 15.66 S25 Spherical surface -28.40 3.00 1.85 23.80 15.47 S26 Spherical surface 86.13 0.49 15.59 S27 Spherical surface 34.70 7.00 1.59 68.50 16.14 S28 Spherical surface -63.34 0.52 16.17 S29 Spherical surface 51.23 5.00 1.59 68.50 15.74 S30 Spherical surface -124.52 8.34 15.37 S31 Spherical surface -27.09 3.59 1.65 39.55 13.20 S32 Spherical surface 34.61 8.14 13.28 S33 Spherical surface 173.55 5.00 1.92 20.88 15.11 S34 Spherical surface -72.29 61.96 15.41 IMG Spherical surface Infinity 0.00 13.58

[0110] Table 5

[0111] Figure 23 shows the axial chromatic aberration curve of the humanoid eye lens in the fifth embodiment, which represents the deviation of the focusing points of light rays with different wavelengths after passing through the humanoid eye lens. Figure 24 shows the astigmatism curve of the humanoid eye lens in the fifth embodiment, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 25 shows the distortion curve of the humanoid eye lens in the fifth embodiment, which represents the distortion magnitude values corresponding to different field angles. Figure 26 shows the MTF curve of the humanoid eye lens in the fifth embodiment, which represents the modulus of the modulation transfer function of the humanoid eye lens at different spatial frequencies.

[0112] According to Figures 23 to 26 it can be seen that the humanoid eye lens given in the fifth embodiment can achieve good imaging quality.

[0113] In summary, Embodiments 1 to 5 respectively satisfy the relationships shown in Table 6.

[0114] Conditional formula / Example Example 1 Example 2 Example 3 Example 4 Example 5 TTL / f 34.572 34.166 31.194 29.207 24.185 fg1 / f -2.885 -3.023 -2.575 -1.651 -5.228 fg2 / f 9.118 8.894 8.954 10.182 7.906 f1 / f2 -0.524 -0.387 -0.382 -0.382 -0.756 (f4 + f3) / (f4 - f3) 4.837 2.737 2.692 2.674 6.711 f5 / fg1 -3.993 -4.589 -4.941 119.666 -1.472 (f6 + f7) / f8 -8.065 -9.410 -9.200 -9.859 -18.703 (f6 + f7 + f8) / fg1 -3.690 -3.856 -4.110 -6.153 -4.587 |(f10 + f11) / f9| 6.712 5.702 5.687 2.922 6.348 T1213 0.485 0.000 0.000 0.000 0.492 CT12 / CT13 2.031 1.750 1.750 1.750 2.001

[0115] Table 6

[0116] Table 7 gives some optical parameters of the humanoid eye lenses of Embodiments 1 to 5.

[0117]

[0118]

[0119] Table 7

[0120] This application also provides an imaging device, and its electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the humanoid eye lens described above.

[0121] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0122] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0123] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0124] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A humanoid eye lens, characterized in that, sequentially from the object side to the image side of the humanoid eye lens, it includes: A first lens group, the first lens group sequentially includes a first lens to an eleventh lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the first lens group is negative; A second lens group, the second lens group sequentially includes a twelfth lens to a seventeenth lens from the object side to the image side of the humanoid eye lens, and the combined focal length of the second lens group is positive; wherein, the first lens to the seventeenth lens are all spherical lenses; The distance TTL from the object side surface of the first lens to the imaging surface of the humanoid eye lens on the optical axis of the humanoid eye lens and the effective focal length f of the humanoid eye lens satisfy: 24.0 < TTL / f < 34.

9.

2. The humanoid eye lens according to claim 1, characterized in that, The combined focal length fg1 of the first lens group and the effective focal length f of the humanoid eye lens satisfy: 5.5 < fg1 / f < -1.5, and the combined focal length fg2 of the second lens group and the effective focal length f of the humanoid eye lens satisfy: 7.8 < fg2 / f < 9.

3.

3. The humanoid eye lens according to claim 1, characterized in that, The effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: -0.8 < f1 / f2 < 0.

3.

4. The humanoid eye lens according to claim 1, characterized in that, The effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 2.5 < (f4 + f3) / (f4 - f3) < 6.

9.

5. The humanoid eye lens according to claim 1, characterized in that, The effective focal length f5 of the fifth lens and the combined focal length fg1 of the first lens group satisfy: -5 < f5 / fg1 < 120.

0.

6. The humanoid eye lens according to claim 1, characterized in that, The effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, and the effective focal length f8 of the eighth lens satisfy: -19.0 < (f6 + f7) / f8 < -7.

8.

7. The humanoid eye lens according to claim 1, characterized in that, The effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the combined focal length fg1 of the first lens group satisfy: -6.3 < (f6 + f7 + f8) / fg1 < -3.

5.

8. The humanoid eye lens according to claim 1, characterized in that, The effective focal length f10 of the tenth lens, the effective focal length f11 of the eleventh lens, and the effective focal length f9 of the ninth lens satisfy: 2.5 < |(f10 + f11) / f9| < 7.

0.

9. The humanoid eye lens according to any one of claims 1 to 8, characterized in that, The interval T1213 on the optical axis from the image side surface of the twelfth lens to the object side surface of the thirteenth lens satisfies: T1213 < 0.5 mm.

10. The humanoid eye lens according to any one of claims 1 to 8, characterized in that, The center thickness CT12 of the twelfth lens and the center thickness CT13 of the thirteenth lens satisfy: 1.7 < CT12 / CT13 < 2.1.

Images