Optical imaging lens

Abstract

The lens of the optical imaging lens only comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object side to the image side. The circumferential area of the object side surface of the third lens is a convex surface, the optical axis area of the image side surface of the fourth lens is a convex surface, the circumferential area of the image side surface of the fourth lens is a convex surface, the optical axis area of the image side surface of the fifth lens is a concave surface, the optical axis area of the image side surface of the sixth lens is a concave surface, and the following conditions are satisfied: 0.70 < = V2 / V3 < = 1.40 and 2.85 < = EFL / (Fno * D11t21), therefore, the 940nm infrared light can be used for imaging, and the method has the advantages of high imaging quality, high forming yield and the like. V2 and V3 respectively represent the Vd Abbe numbers of the second lens and the third lens, EFL represents the effective focal length of the optical imaging lens, Fno represents the aperture value of the optical imaging lens, and D11t21 is the distance from the object side surface of the first lens to the object side surface of the second lens on the optical axis.

Description

TECHNICAL FIELD

[0001] The present application relates to an optical imaging lens, and particularly to an optical imaging lens with six lenses. BACKGROUND

[0002] Portable electronic products, such as mobile phones, cameras, tablet computers, personal digital assistants (PDA), or head-mounted displays, are not only limited to image and video shooting, but also include environmental monitoring, driving record photography, augmented reality (AR), virtual reality (VR), mixed reality (MR), and the like. With the advancement of image sensing technology, consumers have increasingly higher requirements for imaging quality. Therefore, the design of optical imaging lenses not only requires good imaging quality and small lens space, but also needs to consider non-visible infrared detection, environmental temperature stability, and other issues in response to the needs of driving and other environments with insufficient light.

[0003] Secondly, existing optical imaging lenses for environmental monitoring mainly shoot near-infrared light at 880 nm. If infrared light at 940 nm is captured, the characteristics of 940 nm light being easily absorbed by water vapor can minimize the interference of rain and sunlight. In addition, with the development of AR and VR, the demand for optical imaging lenses for environmental monitoring in different directions has increased. Therefore, how to design an optical imaging lens that can image 940 nm infrared light and improve imaging quality, increase the lens forming yield of the optical imaging lens, and thus reduce costs is a problem to be solved by the present application. SUMMARY

[0004] One object of the present application is to provide an optical imaging lens with a thin and compact appearance and excellent imaging quality.

[0005] According to an embodiment of the present application, an optical imaging lens is provided, which includes six lenses along an optical axis from an object side to an image side, and in order, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens to the sixth lens each include an object side surface facing the object side and passing imaging light, and an image side surface facing the image side and passing imaging light.

[0006] For the convenience of representing the parameters of the present application, the following definitions are used in the present specification and drawings: T1 represents the thickness of the first lens on the optical axis; T2 represents the thickness of the second lens on the optical axis; T3 represents the thickness of the third lens on the optical axis; T4 represents the thickness of the fourth lens on the optical axis; T5 represents the thickness of the fifth lens on the optical axis; T6 represents the thickness of the sixth lens on the optical axis; G12 represents the distance between the image side surface of the first lens and the object side surface of the second lens on the optical axis, i.e. the air gap between the first lens and the second lens on the optical axis; G23 represents the distance between the image side surface of the second lens and the object side surface of the third lens on the optical axis, i.e. the air gap between the second lens and the third lens on the optical axis; G34 represents the distance between the image side surface of the third lens and the object side surface of the fourth lens on the optical axis, i.e. the air gap between the third lens and the fourth lens on the optical axis; G45 represents the distance between the image side surface of the fourth lens and the object side surface of the fifth lens on the optical axis, i.e. the air gap between the fourth lens and the fifth lens on the optical axis; G56 represents the distance between the image side surface of the fifth lens and the object side surface of the sixth lens on the optical axis, i.e. the air gap between the fifth lens and the sixth lens on the optical axis; G6F represents the distance between the image side surface of the sixth lens and the object side surface of the filter on the optical axis; TF represents the thickness of the filter on the optical axis; GFP represents the distance between the image side surface of the filter and the imaging surface on the optical axis; AAG represents the sum of the five air gaps of the first to sixth lenses on the optical axis, i.e. the sum of G12, G23, G34, G45 and G56; ALT represents the sum of the thicknesses of the six lenses of the first to sixth lenses on the optical axis, i.e. the sum of T1, T2, T3, T4, T5 and T6; TL represents the distance between the object side surface of the first lens and the image side surface of the sixth lens on the optical axis; TTL represents the system length of the optical imaging lens, i.e. the distance between the object side surface of the first lens and the imaging surface on the optical axis; D11t21 represents the distance between the object side surface of the first lens and the object side surface of the second lens on the optical axis; D12t22 represents the distance between the image side surface of the first lens and the image side surface of the second lens on the optical axis; D41t51 represents the distance between the object side surface of the fourth lens and the object side surface of the fifth lens on the optical axis; D52t62 represents the distance between the image side surface of the fifth lens and the image side surface of the sixth lens on the optical axis; D12t31 represents the distance between the image side surface of the first lens and the object side surface of the third lens on the optical axis; BFL represents the back focal length of the optical imaging lens, i.e. the distance between the image side surface of the sixth lens and the imaging surface on the optical axis, i.e. the sum of G6F, TF and GFP; ImgH represents the maximum image height of the optical imaging lens; HFOV represents the half field of view (half of the maximum field of view) of the optical imaging lens; EFL represents the effective focal length of the optical imaging lens; f1 represents the focal length of the first lens; f2 represents the focal length of the second lens; f3 represents the focal length of the third lens; f4 represents the focal length of the fourth lens; f5 represents the focal length of the fifth lens; f6 represents the focal length of the sixth lens; n1 represents the nd refractive index of the first lens; n2 represents the nd refractive index of the second lens;n3 represents the nd refractive index of the third lens; n4 represents the nd refractive index of the fourth lens; n5 represents the nd refractive index of the fifth lens; n6 represents the nd refractive index of the sixth lens; V1 represents the Vd Abbe number of the first lens; V2 represents the Vd Abbe number of the second lens; V3 represents the Vd Abbe number of the third lens; V4 represents the Vd Abbe number of the fourth lens; V5 represents the Vd Abbe number of the fifth lens; V6 represents the Vd Abbe number of the sixth lens; and Fno represents the aperture value of the optical imaging lens.

[0007] According to a first aspect of the present application, an optical imaging lens is provided, wherein a peripheral region of the object side surface of the third lens is convex, a central region of the image side surface of the fourth lens is convex, and a peripheral region of the image side surface of the fourth lens is convex, a central region of the object side surface of the fifth lens is convex, a central region of the image side surface of the sixth lens is concave, the optical imaging lens has only the aforementioned six lenses, and satisfies condition formula (1): 0.70≦V2 / V3≦1.40 and condition formula (2): 2.85≦EFL / (Fno*D11t21).

[0008] According to a second aspect of the present application, an optical imaging lens is provided, wherein a peripheral region of the object side surface of the third lens is convex, a central region of the image side surface of the fourth lens is convex, and a peripheral region of the image side surface of the fourth lens is convex, a central region of the object side surface of the fifth lens is convex, a central region of the image side surface of the sixth lens is concave, the optical imaging lens has only the aforementioned six lenses, and satisfies condition formula (1) and condition formula (2), and in the optical imaging lens, the thickest lens is any one of the second lens, the third lens and the fourth lens, and the thinnest lens is any one of the fifth lens and the sixth lens.

[0009] According to a third aspect of the present application, an optical imaging lens is provided, wherein a peripheral region of the object side surface of the third lens is convex, a central region of the image side surface of the fourth lens is convex, and a peripheral region of the image side surface of the fourth lens is convex, a central region of the object side surface of the fifth lens is convex, a central region of the image side surface of the sixth lens is concave, the optical imaging lens has only the aforementioned six lenses, and satisfies condition formula (1) and condition formula (3): TL*Fno / EFL≦2.90, and in the optical imaging lens, the thickest lens is any one of the second lens, the third lens and the fourth lens, and the thinnest lens is any one of the fifth lens and the sixth lens.

[0010] According to a fourth aspect of the present application, there is provided an optical imaging lens, wherein the first lens has a material satisfying the following conditions: a transmittance of light with a wavelength of 400 nm is less than or equal to 25%, a transmittance of light with a wavelength of 500 nm is less than or equal to 25%, a transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and a transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; a circumferential region of the image side surface of the third lens is concave, or an optical axis region of the image side surface of the fifth lens is concave; the optical imaging lens has only the aforementioned six lenses; and the following condition (1) is satisfied.

[0011] According to a fifth aspect of the present application, there is provided an optical imaging lens, wherein the first lens has a material satisfying the following conditions: a transmittance of light with a wavelength of 400 nm is less than or equal to 25%, a transmittance of light with a wavelength of 500 nm is less than or equal to 25%, a transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and a transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; an optical axis region of the object side surface of the fourth lens is concave, or a circumferential region of the object side surface of the fourth lens is concave; an optical axis region of the image side surface of the fifth lens is concave; the optical imaging lens has only the aforementioned six lenses; and among the optical imaging lens, the thickest lens is any one of the second lens, the third lens, and the fourth lens.

[0012] According to a sixth aspect of the present application, there is provided an optical imaging lens, wherein the first lens has a material satisfying the following conditions: a transmittance of light with a wavelength of 400 nm is less than or equal to 25%, a transmittance of light with a wavelength of 500 nm is less than or equal to 25%, a transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and a transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; an optical axis region of the object side surface of the fourth lens is concave; a circumferential region of the object side surface of the fifth lens is concave, or an optical axis region of the image side surface of the fifth lens is concave, or an optical axis region of the object side surface of the sixth lens is convex, or an optical axis region of the image side surface of the sixth lens is concave; the optical imaging lens has only the aforementioned six lenses; and among the optical imaging lens, the largest air gap is on the optical axis between the first lens and the second lens, or on the optical axis between the fifth lens and the sixth lens.

[0013] According to a seventh aspect of the present application, there is provided an optical imaging lens, wherein the first lens has a material satisfying the following conditions: a transmittance of light with a wavelength of 400 nm is less than or equal to 25%, a transmittance of light with a wavelength of 500 nm is less than or equal to 25%, a transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and a transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; an optical axis region of the image side surface of the fourth lens is convex; the optical imaging lens has only the aforementioned six lenses; and the following condition (3) is satisfied.

[0014] According to the eighth aspect of the present application, the optical imaging lens is provided, wherein the material of the first lens satisfies the transmittance of light at 400 nm wavelength is less than or equal to 25%, the transmittance of light at 500 nm wavelength is less than or equal to 25%, the transmittance of light at 600 nm wavelength is less than or equal to 25%, the transmittance of light at 900 nm wavelength is greater than or equal to 75%, the image side of the second lens has a concave shape in the region of the optical axis, or the object side of the third lens has a convex shape in the region of the optical axis, or the object side of the fourth lens has a concave shape in the region of the optical axis, or the image side of the fourth lens has a convex shape in the region of the optical axis, or the image side of the fifth lens has a convex shape in the circumferential region, or the image side of the sixth lens has a convex shape in the circumferential region, the optical imaging lens has only the above six lenses, and satisfies the condition formula (2).

[0015] According to the ninth aspect of the present application, the optical imaging lens is provided, wherein the material of the first lens satisfies the transmittance of light at 400 nm wavelength is less than or equal to 25%, the transmittance of light at 500 nm wavelength is less than or equal to 25%, the transmittance of light at 600 nm wavelength is less than or equal to 25%, the transmittance of light at 900 nm wavelength is greater than or equal to 75%, the image side of the third lens has a concave shape in the circumferential region, or the fourth lens has a negative refractive power, or the object side of the fourth lens has a concave shape in the region of the optical axis, or the object side of the fourth lens has a concave shape in the circumferential region, or the fifth lens has a positive refractive power, or the object side of the fifth lens has a convex shape in the region of the optical axis, or the sixth lens has a negative refractive power, or the object side of the sixth lens has a concave shape in the circumferential region, or the image side of the sixth lens has a concave shape in the region of the optical axis, the image side of the fifth lens has a concave shape in the region of the optical axis, the optical imaging lens has only the above six lenses, and in the optical imaging lens, the thinnest lens is any one of the fifth lens and the sixth lens.

[0016] Secondly, the present application can selectively control the above-mentioned parameters, so that the optical imaging lens satisfies at least one of the following condition formulas:

[0017] V6 / V5≧1.80 Condition formula (4);

[0018] AAG / D12t22≦3.00 Condition formula (5);

[0019] (D41t51+D52t62) / (T3+T5)≦1.90 Condition formula (6);

[0020] (T1+BFL) / T2≦3.50 Condition formula (7);

[0021] EFL*Fno / D12t22≦12.00 Condition formula (8);

[0022] (T1+G23+T6) / T3≦3.60 Condition (9)

[0023] TTL / (G12+G23+G45)≦11.00 Condition (10);

[0024] EFL*Fno / (T2+T5)≦7.00 Condition (11);

[0025] (G45+D52t62) / T2≦3.30 Condition (12);

[0026] (ImgH+BFL) / D12t31≦4.30 Condition (13);

[0027] V6 / V4≦1.20 Condition (14);

[0028] TL / (T2+T3+T5)≦3.00 Condition (15);

[0029] HFOV / Fno≦29.70 degrees Condition (16);

[0030] ALT / (T2+T5)≦4.70 Condition (17);

[0031] (EFL+BFL) / D12t22≦9.00 Condition (18);

[0032] (T3+G34+G45)(G12+G23)≦2.50 Condition (19);

[0033] TL / (G12+T2+G23)≦5.30 Condition (20).

[0034] The aforementioned exemplary limiting conditions can be optionally combined in any number of ways in the embodiments of the present application, and are not limited thereto. In addition to the aforementioned conditions, other more lens concave-convex surface arrangements, refractive power variations, various material selections, or other detailed structures can be additionally designed for a single lens or a plurality of lenses in a broad sense in order to enhance the control of system performance and / or resolution when implementing the present application. It should be noted that these details can be selectively combined in other embodiments of the present application without conflict.

[0035] As can be seen from the foregoing, the optical imaging lens of the present application can have good imaging quality, and in addition to being light, thin, and small in appearance, it also provides better imaging quality and lens forming yield when imaging with 940 nm infrared light. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1A schematic diagram showing the cross-sectional structure of a lens according to an embodiment of the present invention;

[0037] Figure 2 A schematic diagram showing the relationship between lens surface shape and light focus;

[0038] Figure 3 Draw a diagram showing the relationship between the surface shape and the area boundaries of the lens area in Example 1;

[0039] Figure 4 Draw a diagram showing the relationship between the surface shape and the area boundaries of the lens area in Example 2;

[0040] Figure 5 Draw a diagram showing the relationship between the surface shape and the area boundaries of the lens area in Example 3;

[0041] Figure 6 A schematic cross-sectional structure diagram of a six-lens optical imaging lens according to a first embodiment of the present invention is shown;

[0042] Figure 7A 、 7B 7C and 7D are schematic diagrams showing longitudinal spherical aberration and various aberrations of the optical imaging lens according to the first embodiment of the present invention;

[0043] Figure 8 Displays detailed optical data of each lens of the optical imaging lens according to the first embodiment of the present invention;

[0044] FIG9 shows aspherical surface data of the optical imaging lens according to the first embodiment of the present invention;

[0045] Figure 10 A schematic cross-sectional view of a six-lens optical imaging lens system according to a second embodiment of the present invention is shown;

[0046] Figure 11A 、 11B 11C and 11D are schematic diagrams showing longitudinal spherical aberration and various aberrations of the optical imaging lens according to the second embodiment of the present invention;

[0047] Figure 12 Displays detailed optical data of each lens of the optical imaging lens according to the second embodiment of the present invention;

[0048] FIG13 shows aspherical surface data of the optical imaging lens according to the second embodiment of the present invention;

[0049] Figure 14 A schematic cross-sectional view of a six-lens optical imaging lens system according to a third embodiment of the present invention is shown;

[0050] Figure 15A 、 15BFIGS. 15C and 15D show the longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the third embodiment of the present application;

[0051] Figure 16 FIGS. 16A and 16B show the detailed optical data of each lens of the optical imaging lens according to the third embodiment of the present application;

[0052] FIG. 17 shows the aspherical surface data of the optical imaging lens according to the third embodiment of the present application;

[0053] Figure 18 FIGS. 18A and 18B show the sectional structure schematic diagram of the six-piece lens of the optical imaging lens according to the fourth embodiment of the present application;

[0054] Figure 19A 、 19B FIGS. 19C and 19D show the longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the fourth embodiment of the present application;

[0055] Figure 20 FIGS. 20A and 20B show the detailed optical data of each lens of the optical imaging lens according to the fourth embodiment of the present application;

[0056] FIG. 21 shows the aspherical surface data of the optical imaging lens according to the fourth embodiment of the present application;

[0057] Figure 22 FIGS. 22A and 22B show the sectional structure schematic diagram of the six-piece lens of the optical imaging lens according to the fifth embodiment of the present application;

[0058] Figure 23A 、 23B FIGS. 23C and 23D show the longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the fifth embodiment of the present application;

[0059] Figure 24 FIGS. 24A and 24B show the detailed optical data of each lens of the optical imaging lens according to the fifth embodiment of the present application;

[0060] FIG. 25 shows the aspherical surface data of the optical imaging lens according to the fifth embodiment of the present application;

[0061] Figure 26 FIGS. 26A and 26B show the sectional structure schematic diagram of the six-piece lens of the optical imaging lens according to the sixth embodiment of the present application;

[0062] Figure 27A 、 27B FIGS. 27C and 27D show the longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the sixth embodiment of the present application;

[0063] Figure 28Detailed optical data of each lens of the optical imaging lens according to the sixth embodiment of the present application is shown.

[0064] Figure 29 shows aspherical surface data of the optical imaging lens according to the sixth embodiment of the present application.

[0065] Figure 30 Figure 28 shows a cross-sectional structure schematic diagram of a six-piece lens of the optical imaging lens according to the seventh embodiment of the present application.

[0066] Figure 31A 、 31B Figures 31C and 31D show longitudinal spherical aberration and aberration diagram schematic diagrams of the optical imaging lens according to the seventh embodiment of the present application.

[0067] Figure 32 Detailed optical data of each lens of the optical imaging lens according to the seventh embodiment of the present application is shown.

[0068] Figure 33 shows aspherical surface data of the optical imaging lens according to the seventh embodiment of the present application.

[0069] Figure 34 Figure 28 shows a cross-sectional structure schematic diagram of a six-piece lens of the optical imaging lens according to the seventh embodiment of the present application.

[0070] Figure 35A 、 35B Figures 35C and 35D show longitudinal spherical aberration and aberration diagram schematic diagrams of the optical imaging lens according to the eighth embodiment of the present application.

[0071] Figure 36 Detailed optical data of each lens of the optical imaging lens according to the eighth embodiment of the present application is shown.

[0072] Figure 37 shows aspherical surface data of the optical imaging lens according to the eighth embodiment of the present application.

[0073] Figure 38A 、 38B A comparison table of numerical values of parameter combinations of the above eight embodiments is listed.

[0074] Explanation of reference numerals:

[0075] 1, 2, 3, 4, 5, 6, 7, 8: optical imaging lens;

[0076] 100, 200, 300, 400, 500: lens; 130: assembling part;

[0077] 211, 212: parallel light; STO: aperture;

[0078] L1: first lens; L2: second lens; L3: third lens; L4: fourth lens; L5: fifth lens; L6: sixth lens; TF: filter; IMA: imaging surface;

[0079] 110, 410, 510, L1A1, L2A1, L3A1, L4A1, L5A1, L6A1, TFA1: object side surface;

[0080] 120, 320, L1A2, L2A2, L3A2, L4A2, L5A2, L6A2, TFA2: image side surface;

[0081] Z1, L1A1C, L1A2C, L2A1C, L2A2C, L3A1C, L3A2C, L4A1C, L4A2C, L5A1C, L5A2C, L6A1C, L6A2C: optical axis region;

[0082] Z2, L1A1P, L1A2P, L2A1P, L2A2P, L3A1P, L3A2P, L4A1P, L4A2P, L5A1P, L5A2P, L6A1P, L6A2P: circumferential region;

[0083] A1: object side; A2: image side; CP: center point; CP1: first center point; CP2: second center point;

[0084] TP1: first conversion point; TP2: second conversion point; OB: optical boundary; I: optical axis;

[0085] Lc: chief ray; Lm: marginal ray; EL: extension line; Z3: relay region; M, R: intersection point. DETAILED DESCRIPTION

[0086] To further illustrate the embodiments, the present application is provided with drawings. These drawings are part of the disclosure of the present application and are mainly used to illustrate the embodiments, and can be explained in conjunction with the related description of the specification to understand the operating principles of the embodiments. Those skilled in the art should be able to understand other possible implementations and the advantages of the present application based on these. The elements in the drawings are not drawn to scale, and similar element symbols are generally used to represent similar elements.

[0087] The terms "optical axis region", "circumferential region", "concave surface" and "convex surface" used in the specification and patent scope of the application should be interpreted based on the definitions listed in the specification.

[0088] The optical system of the present disclosure includes at least one lens that receives an imaging light ray parallel to the optical axis within a half field of view (HFOV) angle from the optical axis. The imaging light ray is imaged by the optical system on an image plane. The term "a lens has positive (or negative) refractive power" means that the paraxial refractive power of the lens calculated by Gaussian optics theory is positive (or negative). The term "object side (or image side) of a lens" is defined as a specific range of the imaging light ray passing through the surface of the lens. The imaging light ray includes at least two types of light rays: a chief ray Lc and a marginal ray Lm (as shown in Figure 1 The object side (or image side) of a lens can be divided into different regions depending on the location, including an optical axis region, a peripheral region, or one or more relay regions in some embodiments, which will be described in detail below.

[0089] Figure 1 Figure 1 is a radial cross-sectional view of a lens 100. Two reference points on the surface of the lens 100 are defined: a center point and a transition point. The center point of the lens surface is an intersection of the surface and the optical axis I. As shown in Figure 1 The first center point CP1 is located on the object side 110 of the lens 100, and the second center point CP2 is located on the image side 120 of the lens 100. The transition point is a point on the surface of the lens, and the tangent line of the point is perpendicular to the optical axis I. The optical boundary OB of the lens surface is defined as a point where the radially outermost marginal ray Lm intersects the surface of the lens. All transition points are located between the optical axis I and the optical boundary OB of the lens surface. In addition, the surface of the lens 100 can have no transition point or at least one transition point. If a single lens surface has multiple transition points, the transition points are sequentially named from the first transition point in the radially outward direction. For example, the first transition point TP1 (closest to the optical axis I), the second transition point TP2 (as shown in Figure 4

[0090] When the lens surface has at least one transition point, the range from the center point to the first transition point TP1 is defined as the optical axis region, wherein the optical axis region includes the center point. The region radially outward from the transition point farthest from the optical axis I (the Nth transition point) to the optical boundary OB is defined as the peripheral region. In some embodiments, a relay region can be further included between the optical axis region and the peripheral region, and the number of relay regions depends on the number of transition points. When the lens surface has no transition point, the distance from the optical axis I to the optical boundary OB of the lens surface is defined as 0% to 50% as the optical axis region, and the distance from the optical axis I to the optical boundary OB of the lens surface is defined as 50% to 100% as the peripheral region.

[0091] ​When a light ray parallel to the optical axis I passes through a region, if the light ray is deflected toward the optical axis I and the intersection point of the light ray and the optical axis I is located on the image side A2 of the lens, the region is a convex surface. When a light ray parallel to the optical axis I passes through a region, if the extension line of the light ray intersects the optical axis I at a point located on the object side Al of the lens, the region is a concave surface.

[0092] In addition, referring to Figure 1 , the lens 100 can further include an assembling portion 130 extending radially outward from the optical boundary OB. The assembling portion 130 is generally used for assembling the lens 100 to a corresponding element (not shown) of an optical system. Imaging light rays do not reach the assembling portion 130. The structure and shape of the assembling portion 130 are merely examples for illustrating the present application, and do not limit the scope of the present application. The assembling portion 130 of the lens discussed below can be partially or entirely omitted in the drawings.

[0093] Referring to Figure 2 , a central point CP and a first transition point TP1 are defined as an optical axis region Zl. The first transition point TP1 and the optical boundary OB of the lens surface are defined as a circumferential region Z2. As shown in Figure 2 , a parallel light ray 211 intersects the optical axis I on the image side A2 of the lens 200 after passing through the optical axis region Zl, i.e., the focal point of the parallel light ray 211 passing through the optical axis region Zl is located at the R point on the image side A2 of the lens 200. Since the light ray intersects the optical axis I on the image side A2 of the lens 200, the optical axis region Zl is a convex surface. Conversely, a parallel light ray 212 diverges after passing through the circumferential region Z2. As shown in Figure 2 , the extension line EL of the parallel light ray 212 passing through the circumferential region Z2 intersects the optical axis I on the object side Al of the lens 200, i.e., the focal point of the parallel light ray 212 passing through the circumferential region Z2 is located at the M point on the object side Al of the lens 200. Since the extension line EL of the light ray intersects the optical axis I on the object side Al of the lens 200, the circumferential region Z2 is a concave surface. In Figure 2 , the first transition point TP1 is the boundary between the optical axis region and the circumferential region in the lens 200, i.e., the first transition point TP1 is the boundary point between the convex surface and the concave surface.

[0094] On the other hand, the judgment of the concave-convex of the surface shape of the optical axis region can also be made by the way commonly known to those skilled in the art, i.e. by the sign of the radius of curvature (abbreviated as R value) of the paraxial ray. The R value is commonly used in optical design software, such as Zemax or CodeV. The R value is also commonly found in the lens data sheet of the optical design software. In terms of the object side surface, when the R value is positive, it is determined that the optical axis region of the object side surface is convex; when the R value is negative, it is determined that the optical axis region of the object side surface is concave. Conversely, in terms of the image side surface, when the R value is positive, it is determined that the optical axis region of the image side surface is concave; when the R value is negative, it is determined that the optical axis region of the image side surface is convex. The result of this method is consistent with the result of the aforementioned judgment by the intersection of the light ray / light ray extension line and the optical axis, i.e. the judgment of the concave-convex of the surface shape by the focal point of a parallel light ray on the object side or the image side of the lens. The "a region is convex (or concave)", "a region is convex (or concave)", or "a convex (or concave) region" described in this specification can be used interchangeably.

[0095] Figures 3-5 Examples of judging the surface shape of the regions and the boundaries of the regions of the lens in various cases are provided, including the aforementioned optical axis region, the peripheral region, and the relay region.

[0096] Figure 3 is a radial cross-sectional view of the lens 300. Referring to Figure 3 , the image side surface 320 of the lens 300 has only one turning point TP1 within the optical boundary OB. The optical axis region Z1 and the peripheral region Z2 of the image side surface 320 of the lens 300 are as shown in Figure 3 . The R value of this image side surface 320 is positive (i.e. R > 0), and therefore, the optical axis region Z1 is concave.

[0097] Generally speaking, the surface shape of each region bounded by a turning point is opposite to that of the adjacent region, and therefore, the turning point can be used to define the transition of the surface shape, i.e. the transition from concave to convex or from convex to concave at the turning point. In Figure 3 , since the optical axis region Z1 is concave, the surface shape transitions at the turning point TP1, and therefore, the peripheral region Z2 is convex.

[0098] Figure 4 is a radial cross-sectional view of the lens 400. Referring to Figure 4 , the object side surface 410 of the lens 400 has a first turning point TP1 and a second turning point TP2. The region between the optical axis I and the first turning point TP1 is defined as the optical axis region Z1 of the object side surface 410. The R value of this object side surface 410 is positive (i.e. R > 0), and therefore, the optical axis region Z1 is convex.

[0099] A circumferential region Z2 is defined between the second transition point TP2 and the optical boundary OB of the object side surface 410 of the lens 400, and the circumferential region Z2 of the object side surface 410 is also convex. In addition, a relay region Z3 is defined between the first transition point TP1 and the second transition point TP2, and the relay region Z3 of the object side surface 410 is concave. Referring again to Figure 4 The object side surface 410 sequentially includes, radially outward from the optical axis I, an optical axis region Z1 between the optical axis I and the first transition point TP1, a relay region Z3 between the first transition point TP1 and the second transition point TP2, and a circumferential region Z2 between the second transition point TP2 and the optical boundary OB of the object side surface 410 of the lens 400. Since the optical axis region Z1 is convex, the surface shape changes from convex to concave at the first transition point TP1, so the relay region Z3 is concave, and again the surface shape changes from concave to convex at the second transition point TP2, so the circumferential region Z2 is convex.

[0100] Figure 5 FIG. 6 is a radial sectional view of a lens 500. The object side surface 510 of the lens 500 has no transition point. For a lens surface without a transition point, such as the object side surface 510 of the lens 500, a distance of 0% to 50% from the optical axis I to the optical boundary OB of the lens surface is defined as an optical axis region, and a distance of 50% to 100% from the optical axis I to the optical boundary OB of the lens surface is defined as a circumferential region. Referring to FIG. 6, the lens 500 is shown. Figure 5 The distance of 50% from the optical axis I to the optical boundary OB of the lens 500 surface is defined as the optical axis region Z1 of the object side surface 510. The R value of this object side surface 510 is positive (i.e., R > 0), so the optical axis region Z1 is convex. Since the object side surface 510 of the lens 500 has no transition point, the circumferential region Z2 of the object side surface 510 is also convex. The lens 500 can further have an assembly portion (not shown) extending radially outward from the circumferential region Z2.

[0101] The optical imaging lens of the present application comprises six lenses arranged along an optical axis from an object side to an image side, sequentially including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each of the first lens to the sixth lens includes an object side surface facing the object side and passing imaging light, and an image side surface facing the image side and passing imaging light. The optical imaging lens of the present application has good imaging quality by designing the detailed features of each lens and satisfying the specific ranges of the parameter combinations, and is light, thin, short, and small in appearance, and also provides better imaging quality and lens forming yield when imaging using 940 nm infrared light.

[0102] The aforementioned characteristics of the lenses designed herein mainly consider the optical characteristics and system length of the optical imaging lens. The material of the first lens is selected to have the following characteristics: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%. This is beneficial to reduce stray light in the range of 400 nm to 600 nm and improve the half viewing angle. The following combinations are beneficial to improve the imaging quality of the 940 nm infrared light imaging lens:

[0103] (1) The circumferential region of the image side of the third lens is concave, or the optical axis region of the image side of the fifth lens is concave, and satisfies condition formula (1).

[0104] (2) The optical axis region of the object side of the fourth lens is concave, or the circumferential region of the object side of the fourth lens is concave; the optical axis region of the image side of the fifth lens is concave, and satisfies that the thickest lens is any one of the second lens to the fourth lens.

[0105] (3) The circumferential region of the object side of the fifth lens is concave, or the optical axis region of the image side of the fifth lens is concave, or the optical axis region of the object side of the sixth lens is convex, or the optical axis region of the image side of the sixth lens is concave, the optical axis region of the object side of the fourth lens is concave, and satisfies that the largest air gap is on the optical axis between the first lens and the second lens, or between the fifth lens and the sixth lens.

[0106] (4) The optical axis region of the image side of the fourth lens is convex and satisfies condition formula (3).

[0107] (5) The optical axis region of the image side of the second lens is concave, or the optical axis region of the object side of the third lens is convex, or the optical axis region of the object side of the fourth lens is concave, or the optical axis region of the image side of the fourth lens is convex, or the circumferential region of the image side of the fifth lens is convex, the circumferential region of the image side of the sixth lens is convex, and satisfies condition formula (2).

[0108] (6) The circumferential region of the image side of the third lens is concave, or the fourth lens has a negative refractive power, or the optical axis region of the object side of the fourth lens is concave, or the circumferential region of the object side of the fourth lens is concave, or the fifth lens has a positive refractive power, or the optical axis region of the object side of the fifth lens is convex, or the sixth lens has a negative refractive power, or the circumferential region of the object side of the sixth lens is concave, or the optical axis region of the image side of the sixth lens is concave; the optical axis region of the image side of the fifth lens is concave; and satisfies that the thinnest lens is any one of the fifth lens or the sixth lens.

[0109] When the optical imaging lens satisfies that the optical axis region of the object side surface of the fourth lens is concave, or the optical axis region of the object side surface of the fifth lens is convex, or the circumferential region of the image side surface of the fifth lens is convex, or the optical axis region of the image side surface of the sixth lens is concave, plus the circumferential region of the object side surface of the third lens is convex, the optical axis region of the image side surface of the fourth lens is convex, the circumferential region of the image side surface of the fourth lens is convex, the optical axis region of the image side surface of the fifth lens is concave, it is beneficial for the 940nm infrared light imaging lens to image. If further satisfying the conditional formula (1) and the conditional formula (2), the thickest lens is any one of the second lens to the fourth lens, and the thinnest lens is any one of the fifth lens or the sixth lens, which is beneficial for reducing the distortion aberration. More preferably, 2.85≦EFL / (Fno*D11t21)≦3.70 can be further satisfied.

[0110] When the optical imaging lens satisfies that the optical axis region of the object side surface of the fifth lens is convex, or the optical axis region of the image side surface of the fifth lens is concave, or the circumferential region of the image side surface of the sixth lens is convex, plus the circumferential region of the object side surface of the third lens is convex, the optical axis region of the image side surface of the fourth lens is convex, the circumferential region of the image side surface of the fourth lens is convex, the optical axis region of the image side surface of the sixth lens is concave, it is beneficial for the 940nm infrared light imaging lens to image. If further satisfying the conditional formula (1) and the conditional formula (2), the thickest lens is any one of the second lens to the fourth lens, and the thinnest lens is any one of the fifth lens or the sixth lens, which is beneficial for reducing the distortion aberration. More preferably, 2.85≦EFL / (Fno*D11t21)≦3.70 can be further satisfied.

[0111] When the optical imaging lens satisfies that the circumferential region of the object side surface of the third lens is convex, the optical axis region of the image side surface of the fourth lens is convex, and the circumferential region of the image side surface of the fourth lens is convex, the optical axis region of the object side surface of the fifth lens is convex, the optical axis region of the image side surface of the sixth lens is concave, it is beneficial for the 940nm infrared light imaging lens to image. If further satisfying the conditional formula (1), the conditional formula (3), the thickest lens is any one of the second lens to the fourth lens, and the thinnest lens is any one of the fifth lens or the sixth lens, which is beneficial for reducing the distortion aberration. More preferably, 1.70≦TL*Fno / EFL≦2.90 can be further satisfied.

[0112] When the embodiment of the optical imaging lens of the present application further satisfies the conditional formula (4) or the conditional formula (14), it is beneficial for the 940nm infrared light to image, and the preferable limitation is 1.80≦V6 / V5≦3.00 or 0.80≦V6 / V4≦1.20.

[0113] When the embodiment of the optical imaging lens of the present application further satisfies the condition (16), it is advantageous to increase the half field of view while increasing the aperture, preferably limited to 17.00 degrees≦HFOV / Fno≦29.70 degrees.

[0114] When the embodiment of the optical imaging lens of the present application further satisfies that the circumferential area of the object side surface of the second lens is concave, it is advantageous to reduce the longitudinal spherical aberration.

[0115] When the embodiment of the optical imaging lens of the present application further satisfies that the circumferential area of the image side surface of the second lens is concave, it is advantageous to reduce the field curvature aberration.

[0116] The optical imaging lens of the present application further satisfies the following condition formula, which helps to maintain the effective focal length and the optical parameters at a proper value, avoiding any parameter being too large to adversely affect the imaging of 940 nm infrared light, or any parameter being too small to affect the assembly or increase the manufacturing difficulty:

[0117]

[0118]

[0119] The optical imaging lens of the present application further satisfies the following condition formula, which helps to maintain the thickness and spacing of each lens at a proper value, avoiding any parameter being too large to adversely affect the thinness of the optical imaging lens as a whole, or any parameter being too small to affect the assembly or increase the manufacturing difficulty:

[0120]

[0121] In addition, any combination of the selected embodiment parameters can be used to increase the lens limit, which is beneficial to the lens design of the same architecture of the present application.

[0122] Due to the unpredictability of optical system design, under the architecture of the present application, the above-mentioned condition formula can preferably shorten the system length, reduce the aperture value, improve the imaging quality, or improve the assembly yield to improve the shortcomings of the prior art. The lens of the embodiment of the present application uses plastic material, which can further reduce the weight of the lens and save costs.

[0123] In addition to the above conditions, other more concave-convex surface arrangements, refractive power variations, or other details or additional structures of the lenses can be designed to further enhance the control of the system size, performance, resolution, and / or manufacturing yield in implementing the present application. In addition, the lenses of the optical imaging lens of the embodiments of the present application can be made of plastic to reduce the weight and cost of the lens, but can also be made of glass, resin, or other transparent materials. It should be noted that these details can be selectively combined and applied to other embodiments of the present application without conflict, and are not limited thereto.

[0124] To illustrate that the present application can indeed provide good optical performance while increasing the field of view and reducing the aperture value, the following provides several embodiments and their detailed optical data. First, please refer to Figure 6 to Figure 9, which shows a cross-sectional structure of a six-lens optical imaging lens according to the first embodiment of the present application, Figure 6 Figure 7A , 7B , 7C, 7D shows the longitudinal spherical aberration and aberration diagram of the optical imaging lens according to the first embodiment of the present application, Figure 8 shows the detailed optical data of the optical imaging lens according to the first embodiment of the present application, and Figure 9 shows the aspheric data of each lens of the optical imaging lens according to the first embodiment of the present application.

[0125] As shown in Figure 6 , the optical imaging lens 1 of the present embodiment sequentially includes an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 from the object side Al to the image side A2. A filter TF and an imaging surface IMA of an image sensor are disposed on the image side A2 of the optical imaging lens 1. In the present embodiment, the filter TF is disposed between the sixth lens L6 and the imaging surface IMA, which can be selected according to actual needs to filter out specific wavelengths of light to avoid the transmission of specific wavelengths of light to the imaging surface IMA and affect the imaging quality. The optical imaging lens 1 in this example is an infrared imaging lens, so the filter TF is used to filter out the visible light band, so that the wavelengths of the visible light band cannot be imaged on the imaging surface IMA, but not limited thereto.

[0126] ​The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 of the optical imaging lens 1 are exemplarily made of plastic material in this embodiment, but are not limited thereto, and can be made of other materials, such as glass, resin. For example, the plastic material includes, but is not limited to, APP-900, SP7600, SP1516_20, EP3500_21, EP8000_21, APL5014CL_20, APL5514_IR and the like.

[0127] The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 form the following detailed structures: The first lens L1 has a negative refractive power, and has an object side surface L1A1 facing the object side A1 and an image side surface L1A2 facing the image side A2. The optical axis region L1A1C of the object side surface L1A1 is a convex surface and the circumferential region L1A1P thereof is a convex surface. The optical axis region L1A2C of the image side surface L1A2 is a concave surface and the circumferential region L1A2P thereof is a concave surface.

[0128] The second lens L2 has a positive refractive power, and has an object side surface L2A1 facing the object side A1 and an image side surface L2A2 facing the image side A2. The optical axis region L2A1C of the object side surface L2A1 is a convex surface and the circumferential region L2A1P thereof is a convex surface. The optical axis region L2A2C of the image side surface L2A2 is a concave surface and the circumferential region L2A2P thereof is a convex surface.

[0129] The third lens L3 has a positive refractive power, and has an object side surface L3A1 facing the object side A1 and an image side surface L3A2 facing the image side A2. The optical axis region L3A1C of the object side surface L3A1 is a convex surface and the circumferential region L3A1P thereof is a convex surface. The optical axis region L3A2C of the image side surface L3A2 is a convex surface and the circumferential region L3A2P thereof is a convex surface.

[0130] The fourth lens L4 has a negative refractive power, and has an object side surface L4A1 facing the object side A1 and an image side surface L4A2 facing the image side A2. The optical axis region L4A1C of the object side surface L4A1 is a concave surface and the circumferential region L4A1P thereof is a concave surface. The optical axis region L4A2C of the image side surface L4A2 is a convex surface and the circumferential region L4A2P thereof is a convex surface.

[0131] The fifth lens L5 has a positive refractive power, and has an object side surface L5A1 facing the object side A1 and an image side surface L5A2 facing the image side A2. The optical axis region L5A1C of the object side surface L5A1 is a convex surface and the circumferential region L5A1P thereof is a concave surface. The optical axis region L5A2C of the image side surface L5A2 is a concave surface and the circumferential region L5A2P thereof is a convex surface.

[0132] The sixth lens L6 has a negative refractive power and has an object side surface L6A1 facing the object side A1 and an image side surface L6A2 facing the image side A2. The optical axis region L6A1C of the object side surface L6A1 is a convex surface and the circumferential region L6A1P thereof is a concave surface. The optical axis region L6A2C of the image side surface L6A2 is a concave surface and the circumferential region L6A2P thereof is a convex surface.

[0133] In the present embodiment, air gaps are designed between the imaging surfaces IMA of the lenses L1, L2, L3, L4, L5, L6, the filter TF and the image sensor, but the present application is not limited thereto. In other embodiments, any two opposing lens surface profiles can be designed to correspond to each other and can be attached to each other to eliminate the air gaps therebetween.

[0134] For the numerical values of the optical properties and the distances of each lens in the optical imaging lens 1 of the present embodiment, please refer to Table 1. Figure 8 It can be seen that the effective focal length (EFL) of the optical imaging lens 1 of the present embodiment is 2.442 millimeters (mm), the half field of view (HFOV) is 42.219 degrees, the F-number (Fno) is 2.100, the image height is 2.089 mm, and the system length (TTL) is 4.107 mm. For the numerical values of the designed parameter combinations, please refer to Table 1. Figure 38A Please note that the material parameters of the lenses disclosed in the optical parameter tables of each embodiment are in the nd refractive index and Vd Abbe number format of the international glass code, so that those skilled in the art can know the specific material implementation. Among them, nd is the refractive index of the substance at d helium yellow line 587.56 nanometers, and Vd is calculated by the refractive index of the substance at Fraunhofer spectrum d, F and C wavelengths. The focal length values disclosed in the optical parameter tables of each embodiment are calculated by the refractive index of the wavelength band implemented by the optical system, and the primary wavelength implemented by the embodiment of the present application is 940 nanometers, so the focal length value of the present application is calculated by the refractive index of the material at 940 nanometers.

[0135] The object side surface L1A1 and the image side surface L1A2 of the first lens L1, the object side surface L2A1 and the image side surface L2A2 of the second lens L2, the object side surface L3A1 and the image side surface L3A2 of the third lens L3, the object side surface L4A1 and the image side surface L4A2 of the fourth lens L4, the object side surface L5A1 and the image side surface L5A2 of the fifth lens L5, and the object side surface L6A1 and the image side surface L6A2 of the sixth lens L6, a total of twelve aspheric surfaces are defined according to the following aspheric surface curve formula:

[0136]

[0137] Y represents the perpendicular distance from the point on the aspheric surface to the optical axis I; Z represents the depth of the aspheric surface (the perpendicular distance between the point on the aspheric surface with the distance of Y to the optical axis and the tangent plane at the vertex of the aspheric surface); R represents the curvature radius of the lens surface near the optical axis; K represents the conic constant; a i is the aspheric surface coefficient of the i-th order. The detailed parameters of the aspheric surface are shown in Fig. 9, and it should be noted that the parameters not listed are all zero.

[0138] Figure 7A Fig. 9 shows the schematic diagram of the longitudinal spherical aberration of the optical imaging lens according to the first embodiment, the horizontal axis is the longitudinal spherical aberration, and the vertical axis is the field of view. Figure 7B Fig. 10 shows the schematic diagram of the sagittal field curvature aberration of the optical imaging lens according to the first embodiment, Figure 7C Fig. 11 shows the schematic diagram of the meridional field curvature aberration of the optical imaging lens according to the first embodiment, the horizontal axis is the field curvature aberration, and the vertical axis is the image height. Figure 7D Fig. 12 shows the schematic diagram of the distortion aberration of the optical imaging lens according to the first embodiment, the horizontal axis is the percentage, and the vertical axis is the image height. The off-axis light rays at different heights of the three representative wavelengths (930 nm, 940 nm, and 950 nm) are all concentrated near the imaging point. The deviation of the imaging point of the off-axis light rays at different heights can be seen from the deviation amplitude of each curve, which is controlled within -0.035-0.014 mm. The spherical aberration of different wavelengths is significantly improved, the sagittal field curvature aberration is within -0.035-0.006 mm, the meridional field curvature aberration is within -0.072-0.12 mm, and the distortion aberration is maintained within -7.2-4.8%.

[0139] From the above data, it can be seen that the various optical characteristics of the optical imaging lens 1 meet the imaging quality requirements of the optical system. Accordingly, the optical imaging lens 1 of the first preferred embodiment can effectively provide better imaging quality while providing a system length of 4.107 mm compared with the existing optical lens.

[0140] Reference Figures 10-1 3, Figure 10 Fig. 13 shows the detailed optical data of the optical imaging lens according to the second embodiment of the present application, and Fig. 14 shows the aspheric surface data of each lens of the optical imaging lens according to the second embodiment of the present application, and it should be noted that the parameters not listed are all zero. Figure 11A 、 11B Fig. 11 shows the schematic diagram of the meridional field curvature aberration of the optical imaging lens according to the first embodiment, the horizontal axis is the field curvature aberration, and the vertical axis is the image height. Figure 12 Fig. 13 shows the detailed optical data of the optical imaging lens according to the second embodiment of the present application, and Fig. 14 shows the aspheric surface data of each lens of the optical imaging lens according to the second embodiment of the present application, and it should be noted that the parameters not listed are all zero. Figure 10As shown in , the optical imaging lens 2 of this embodiment includes, from the object side A1 to the image side A2, an aperture STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0141] The surface concave-convex configurations of the object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 facing the object side A1 and the image-side surfaces L1A2, L4A2, L5A2, L6A2 facing the image side A2 of the second embodiment, as well as the positive and negative refractive power configurations of each lens except the first lens L1, are substantially similar to those of the first embodiment, except that the curvature radius, lens thickness, aspheric coefficient, back focal length and other related optical parameters of the second embodiment and the surface concave-convex configurations of the image-side surfaces L2A2 and L3A2 are different from those of the first embodiment, and the first lens L1 has a positive refractive power. Specifically, the difference in the surface concave-convex configurations is that the circumferential area L2A2P of the image-side surface L2A2 of the second lens L2 is concave, and the circumferential area L3A2P of the image-side surface L3A2 of the third lens L3 is concave. For the optical characteristics and distance values ​​of each lens of the optical imaging lens 2 of this embodiment, please refer to Figure 12 , it can be seen that the EFL of the optical imaging lens 2 of this embodiment is 2.666mm, HFOV is 42.215 degrees, Fno is 1.473, image height is 2.101mm, and TTL is 3.939mm. The system length TTL of this embodiment is shorter than that of the first embodiment. For the numerical values ​​of the various design parameter combinations, please refer to Figure 38A .

[0142] from Figure 11A In the longitudinal spherical aberration, the deviation of the imaging point of off-axis light at different heights is controlled within -0.02 to 0.006 mm, as can be seen from the deflection amplitude of each curve. Figure 11B In the field curvature aberration in the sagittal direction, the focal length variation of the three representative wavelengths (930nm, 940nm, 950nm) in the entire field of view falls within the range of -0.024 to 0.048mm. Figure 11C Among the field curvature aberrations in the meridional direction, the focal length variation of the three representative wavelengths within the entire field of view falls within the range of -0.036 to 0.054 μm. Figure 11D The distortion aberration of the optical imaging lens 2 is maintained within the range of -15% to 3%. Compared with the first embodiment, the present embodiment exhibits smaller longitudinal spherical aberration and tangential field curvature aberration.

[0143] The above data shows that the various optical properties of the optical imaging lens 2 meet the imaging quality requirements of the optical system. This shows that the optical imaging lens 2 of this embodiment can effectively provide better imaging quality while providing a system length of 3.939 mm compared to conventional optical lenses.

[0144] Reference Figures 14-1 7, Figure 14 FIG. 17 shows the detailed optical data of the optical imaging lens according to the third embodiment of the present application, and FIG. 18 shows the aspherical surface data of each lens of the optical imaging lens according to the third embodiment of the present application. It is noted that those not listed are all zero. As shown in FIG. 17, the optical imaging lens 3 of the present embodiment comprises, in order from the object side Al to the image side A2, a stop STO, a first lens Ll, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 15A , 15B , 15C, 15D show the longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the third embodiment of the present application. Figure 16 FIG. 17 shows the detailed optical data of the optical imaging lens according to the third embodiment of the present application, and FIG. 18 shows the aspherical surface data of each lens of the optical imaging lens according to the third embodiment of the present application. It is noted that those not listed are all zero. As shown in FIG. 17, the optical imaging lens 3 of the present embodiment comprises, in order from the object side Al to the image side A2, a stop STO, a first lens Ll, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 14 The surface concave-convex configuration of the object side faces LlAl, L2Al, L3Al, L4Al, L5Al, L6Al of the third embodiment toward the object side Al and the image side faces LlA2, L4A2, L5A2, L6A2 toward the image side A2 and the positive or negative refractive power configuration of each lens other than the first lens Ll are substantially similar to those of the first embodiment, except that the optical parameters related to the curvature radius, the lens thickness, the aspherical surface coefficients, the back focal length, etc. of the third embodiment and the surface concave-convex configuration of the image side faces L2A2, L3A2 and the first lens Ll having positive refractive power are different from those of the first embodiment. In detail, the difference in the surface concave-convex configuration is that the peripheral region L2A2P of the image side face L2A2 of the second lens L2 is concave, and the peripheral region L3A2P of the image side face L3A2 of the third lens L3 is concave. The values of the various optical characteristics of each lens and the various distances of the optical imaging lens 3 of the present embodiment are shown in Table 3 below. As can be seen from Table 3, the EFL of the optical imaging lens 3 of the present embodiment is 2.745 mm, the HFOV is 42.215 degrees, the Fno is 1.517, the image height is 2.081 mm, and the TTL is 3.895 mm. The system length TTL of the present embodiment is shorter than that of the first embodiment. The values of the various parameter combinations of the design are shown in Table 4 below.

[0145] . Figure 16 Figure 38A

[0146] From the longitudinal spherical aberration of FIG. 15B, it can be seen from the deflection amplitude of each curve that the imaging point deviation of the off-axis light rays of different heights is controlled within -0.008-0.01 mm. From the sagittal direction field curvature aberration of FIG. 16B, the focal length variation of the three representative wavelengths (930 nm, 940 nm, 950 nm) within the entire field of view falls within -0.028-0.021 mm. From the tangential direction field curvature aberration of FIG. 16C, the focal length variation of the three representative wavelengths (930 nm, 940 nm, 950 nm) within the entire field of view falls within -0.028-0.021 mm. Figure 15A Figure 15B Figure 15C ​​​The focal length variation of the three representative wavelengths in the entire field of view range of the sagittal field curvature aberration is within -0.063 to 0.042 mm. Figure 15D The distortion aberration is maintained within the range of -18 to 1.8%. Compared with the first embodiment, the longitudinal spherical aberration and the sagittal field curvature aberration of the present embodiment are smaller.

[0147] From the above data, it can be seen that the various optical properties of the optical imaging lens 3 have met the imaging quality requirements of the optical system. Accordingly, it is shown that the optical imaging lens 3 of the present embodiment, compared with the prior art optical lens, can still effectively provide better imaging quality while providing a system length of 3.895 mm.

[0148] Reference Figures 18-2 1, Figure 18 Figure 19 shows the cross-sectional structure of a six-lens optical imaging lens according to the fourth embodiment of the present application, Figure 19A 、 19B , 19C, 19D show the longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the fourth embodiment of the present application, Figure 20 Figure 21 shows the aspherical surface data of each lens of the optical imaging lens according to the fourth embodiment of the present application, and it is noted that those not listed are zero. As shown in Figure 22, the optical imaging lens 4 of the present embodiment sequentially includes, from the object side Al to the image side A2, an aperture STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 18

[0149] The surface concave-convex configuration of the object side L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 towards the object side Al and the image side L1A2, L3A2, L4A2, L5A2 towards the image side A2 and the positive or negative refractive power configuration of each lens except the first lens L1 of the fourth embodiment are generally similar to those of the first embodiment, but the optical parameters related to the fourth embodiment, such as the curvature radius, the lens thickness, the aspherical surface coefficient, the back focal length, etc., and the surface concave-convex configuration of the image side L2A2, L5A2 are different from those of the first embodiment, and the first lens L1 has a positive refractive power. In detail, the difference in surface concave-convex configuration is that the circumferential region L2A2P of the image side L2A2 of the second lens L2 is concave, and the circumferential region L6A2P of the image side L6A2 of the sixth lens L6 is concave. For the numerical values of the various optical properties of each lens and the various distances of the optical imaging lens 4 of the present embodiment, please refer to Table 4. Figure 20 ​, it can be seen that the EFL of the optical imaging lens 4 of this embodiment is 2.731mm, HFOV is 42.215 degrees, Fno is 1.509, image height is 2.340mm, and TTL is 4.009mm. The system length TTL of this embodiment is shorter than that of the first embodiment. For the numerical values ​​of the various design parameter combinations, please refer to Figure 38A .

[0150] from Figure 19A In the longitudinal spherical aberration, the deviation of the imaging point of off-axis light at different heights is controlled within -0.0108 to 0.018 mm, as can be seen from the deflection amplitude of each curve. Figure 19B In the field curvature aberration in the sagittal direction, the focal length variation of the three representative wavelengths (930nm, 940nm, 950nm) in the entire field of view falls within the range of -0.032 to 0.024mm. Figure 19C Among the field curvature aberrations in the meridional direction, the focal length changes of the three representative wavelengths within the entire field of view fall within the range of -0.008 to 0.08 mm. Figure 19D The distortion aberration is maintained within the range of -6% to 0.6%. Compared with the first embodiment, the longitudinal spherical aberration, the field curvature aberration in the tangential direction and the distortion aberration of the embodiment are smaller.

[0151] From the above data, it can be seen that the various optical properties of the optical imaging lens 4 meet the imaging quality requirements of the optical system. This shows that the optical imaging lens 4 of this embodiment can effectively provide better imaging quality while providing a system length of 4.009 mm compared to conventional optical lenses.

[0152] refer to Figures 22-2 5. Figure 22 A schematic cross-sectional structure diagram of a six-lens optical imaging lens according to a fifth embodiment of the present invention is shown. Figure 23A 、 23B 23C and 23D are schematic diagrams showing longitudinal spherical aberration and various aberrations of the optical imaging lens according to the fifth embodiment of the present invention. Figure 24 Detailed optical data of the optical imaging lens according to the fifth embodiment of the present invention is shown in FIG25 . FIG25 shows the aspheric surface data of each lens of the optical imaging lens according to the fifth embodiment of the present invention. Please note that the data not listed are all zero. Figure 22 As shown in , the optical imaging lens 5 of this embodiment includes, from the object side A1 to the image side A2, an aperture STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0153] The concave-convex surface configurations of the object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 facing the object side A1 and the image-side surfaces L1A2, L4A2, L5A2, L6A2 facing the image side A2 of the fifth embodiment, as well as the positive and negative refractive power configurations of each lens except the first lens L1, are substantially similar to those of the first embodiment. However, the fifth embodiment differs from the first embodiment in terms of the curvature radius, lens thickness, aspheric coefficient, back focal length and other related optical parameters, the concave-convex surface configurations of the image-side surfaces L2A2 and L3A2, and the positive refractive power of the first lens L1. Specifically, the difference in the concave-convex surface configurations is that the circumferential region L2A2P of the image-side surface L2A2 of the second lens L2 is concave, and the circumferential region L3A2P of the image-side surface L3A2 of the third lens L3 is concave. For the optical characteristics and distance values ​​of each lens of the optical imaging lens 5 of this embodiment, please refer to Figure 24 , it can be seen that the EFL of the optical imaging lens 5 of this embodiment is 2.796mm, HFOV is 42.141 degrees, Fno is 1.545, image height is 2.044mm, and TTL is 4.110mm. For the numerical values ​​of the various design parameter combinations, please refer to Figure 38B .

[0154] from Figure 23A In the longitudinal spherical aberration, the deviation of the imaging point of off-axis light at different heights is controlled within -0.032 to 0.016 mm, as can be seen from the deflection amplitude of each curve. Figure 23B In the field curvature aberration in the sagittal direction, the focal length variation of the three representative wavelengths (930nm, 940nm, 950nm) in the entire field of view falls within the range of -0.04 to 0.04mm. Figure 23C Among the field curvature aberrations in the meridional direction, the focal length changes of the three representative wavelengths within the entire field of view fall within the range of -0.04 to 0.010 mm. Figure 23D The display distortion aberration is maintained within the range of -21% to 2.1%. Compared with the first embodiment, the field curvature aberration in the tangential direction of the display of this embodiment is smaller.

[0155] The above data show that the various optical properties of the optical imaging lens 5 meet the imaging quality requirements of the optical system. This shows that the optical imaging lens 5 of this embodiment can effectively provide better imaging quality while providing a system length of 4.110 mm compared to conventional optical lenses.

[0156] refer to Figures 26-2 9, Figure 26 A schematic cross-sectional structure diagram of a six-lens optical imaging lens according to a sixth embodiment of the present invention is shown. Figure 27A 、 27BFIGS. 27C and 27D show the longitudinal spherical aberration and the aberration diagrams of the optical imaging lens according to the sixth embodiment of the present application, Figure 28 FIG. 29 shows the aspherical surface data of each lens of the optical imaging lens according to the sixth embodiment of the present application, and it is noted that those not listed are zero. As shown in Table 2, Figure 26 The optical imaging lens 6 of the present embodiment includes, in order from the object side Al to the image side A2, a stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6.

[0157] The surface configurations of the object side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 toward the object side Al and the image side surfaces L1A2, L4A2, L5A2, L6A2 toward the image side A2 and the positive or negative refractive power configurations of each lens except the first lens L1 of the sixth embodiment are substantially similar to those of the first embodiment, except that the optical parameters related to the radius of curvature, the lens thickness, the aspherical coefficients, the back focal length, etc. of the sixth embodiment, the surface configurations of the image side surfaces L2A2, L3A2, and the first lens L1 having a positive refractive power are different from those of the first embodiment. In detail, the difference in the surface configurations lies in that the peripheral region L2A2P of the image side surface L2A2 of the second lens L2 is concave, and the peripheral region L3A2P of the image side surface L3A2 of the third lens L3 is concave. For the numerical values of the optical characteristics of each lens and the distances of the optical imaging lens 6 of the present embodiment, please refer to Table 2. Figure 28 It can be seen that the EFL of the optical imaging lens 6 of the present embodiment is 2.808 mm, the HFOV is 42.228 degrees, the Fno is 1.551, the image height is 2.131 mm, and the TTL is 3.996 mm. The system length TTL of the present embodiment is shorter than that of the first embodiment. For the numerical values of the parameter combinations of the design, please refer to Table 2. Figure 38B .

[0158] From the longitudinal spherical aberration of the sixth embodiment, it can be seen from the deflection amplitudes of each curve that the imaging point deviations of the off-axis rays at different heights are controlled within -0.015-0.0105 mm. From the sagittal field curvature aberration of the sixth embodiment, the focal length variations of the three representative wavelengths (930 nm, 940 nm, 950 nm) in the entire field of view range fall within -0.036-0.036 μm. From the tangential field curvature aberration of the sixth embodiment, the focal length variations of the three representative wavelengths in the entire field of view range fall within -0.09-0.054 μm. Figure 27A Figure 27B Figure 27C Figure 27D ​​​The display aberration distortion is maintained in the range of -18 to 1.8%. Compared with the first embodiment, the longitudinal spherical aberration and the meridional field curvature aberration of the present embodiment are smaller.

[0159] From the above data, it can be seen that the various optical characteristics of the optical imaging lens 6 have met the imaging quality requirements of the optical system. Accordingly, it is shown that the optical imaging lens 6 of the present embodiment, compared with the prior optical lens, can effectively provide better imaging quality while providing a system length of 3.996 mm.

[0160] Reference Figures 30-3 3, Figure 30 The sectional structure of the six-piece lens of the optical imaging lens according to the seventh embodiment of the present application is shown in FIG. 33. Figure 31A 、 31B The longitudinal spherical aberration and the various aberration diagrams of the optical imaging lens according to the seventh embodiment of the present application are shown in FIG. 34. Figure 32 The detailed optical data of the optical imaging lens according to the seventh embodiment of the present application is shown in FIG. 33, and the aspheric surface data of each lens according to the seventh embodiment of the present application is shown in FIG. 34, and it is noted that those not listed are zero. As shown in FIG. 33, the optical imaging lens 7 of the present embodiment sequentially includes, from the object side Al to the image side A2, an aperture STO, a first lens Ll, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Figure 30

[0161] The surface concave-convex configurations of the object side surfaces LlAl, L3Al, L5Al, L6Al toward the object side Al and the image side surfaces LlA2, L4A2, L6A2 toward the image side A2 and the positive and negative refractive power configurations of each lens except the third lens L3 and the fourth lens L4 of the seventh embodiment are substantially similar to those of the first embodiment, but the relevant optical parameters such as the curvature radii, the lens thicknesses, the aspheric coefficients, the back focal lengths, the surface concave-convex configurations of the object side surfaces L2Al, L4Al and the image side surfaces L2A2, L3A2, L5A2, and the third lens L3 having a negative refractive power and the fourth lens L4 having a positive refractive power of the seventh embodiment are different from those of the first embodiment. In detail, the difference in the surface concave-convex configurations is that the peripheral region L2AlP of the object side surface L2Al of the second lens L2 is concave, the peripheral region L2A2P of the image side surface L2A2 of the second lens L2 is concave, the optical axis region L3A2C of the image side surface L3A2 of the third lens L3 is concave and the peripheral region L3A2P is concave, the peripheral region L4AlP of the object side surface L4Al of the fourth lens L4 is convex, and the peripheral region L5A2P of the image side surface L5A2 of the fifth lens L5 is concave. The values of the various optical characteristics of each lens and the various distances of the optical imaging lens 7 of the present embodiment are shown in Table 7. Figure 32 ​, it can be seen that the EFL of the optical imaging lens 7 of this embodiment is 3.045mm, HFOV is 35.709 degrees, Fno is 1.995, image height is 2.100mm, and TTL is 4.929mm. For the numerical values ​​of the various design parameter combinations, please refer to Figure 38B .

[0162] from Figure 31A In the longitudinal spherical aberration, the deviation of the imaging point of off-axis light at different heights is controlled within the range of -0.0045 to 0.00225 mm, as can be seen from the deflection amplitude of each curve. Figure 31B In the field curvature aberration in the sagittal direction, the focal length variation of the three representative wavelengths (930nm, 940nm, 950nm) in the entire field of view falls within -7 to 4μm. Figure 31C Among the field curvature aberrations in the tangential direction, the focal length variation of the three representative wavelengths within the entire field of view falls within the range of -10 to 7 μm. Figure 31D The display distortion aberration is maintained within the range of -5 to 0.5%. Compared with the first embodiment, the longitudinal spherical aberration, the field curvature aberration in the tangential direction and the distortion aberration of this embodiment are smaller.

[0163] The above data show that the various optical properties of the optical imaging lens 7 meet the imaging quality requirements of the optical system. This shows that the optical imaging lens 7 of this embodiment can effectively provide better imaging quality while providing a system length of 4.929 mm compared to conventional optical lenses.

[0164] refer to Figures 34-3 7, Figure 34 A schematic diagram showing the cross-sectional structure of a six-lens optical imaging lens according to an eighth embodiment of the present invention is shown. Figure 35A 、 35B 35C and 35D are schematic diagrams showing longitudinal spherical aberration and various aberrations of the optical imaging lens according to the eighth embodiment of the present invention. Figure 36 Detailed optical data of the optical imaging lens according to the eighth embodiment of the present invention is shown in FIG37 . FIG37 shows the aspheric surface data of each lens of the optical imaging lens according to the eighth embodiment of the present invention. Please note that those not listed are all zero. Figure 34 As shown in , the optical imaging lens 8 of this embodiment includes, from the object side A1 to the image side A2, an aperture STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6.

[0165] The concave-convex surface configurations of the object-side surfaces L1A1, L3A1, L4A1, L5A1, and L6A1 (facing the object side A1) and the image-side surfaces L1A2, L3A2, L4A2, L5A2, and L6A2 (facing the image side A2) of the eighth embodiment, as well as the positive and negative refractive power configurations of each lens element except the second lens element L2, the fifth lens element L5, and the sixth lens element L6, are generally similar to those of the first embodiment. However, the eighth embodiment differs from the first embodiment in optical parameters such as the curvature radius, lens thickness, aspheric coefficient, and back focal length, as well as the concave-convex surface configurations of the object-side and image-side surfaces L2A1 and L2A2. The second lens element L2 has a negative refractive power, the fifth lens element L5 has a negative refractive power, and the sixth lens element L6 has a positive refractive power. Specifically, the concave-convex surface configurations differ in that the circumferential region L2A2P of the image-side surface L2A2 of the second lens element L2 is concave, and the circumferential region L2A2P of the image-side surface L2A2 of the second lens element L2 is also concave. For the optical characteristics and distance values ​​of each lens of the optical imaging lens 8 of this embodiment, please refer to Figure 36 , it can be seen that the EFL of the optical imaging lens 8 of this embodiment is 2.934mm, HFOV is 36.695 degrees, Fno is 1.850, image height is 2.100mm, and TTL is 4.198mm. For the numerical values ​​of the various design parameter combinations, please refer to Figure 38B .

[0166] from Figure 35A In the longitudinal spherical aberration, the deviation of the imaging point of off-axis light at different heights is controlled within -0.006 to 0.006 mm, as can be seen from the deflection amplitude of each curve. Figure 35B In the field curvature aberration in the sagittal direction, the focal length variation of the three representative wavelengths (930nm, 940nm, 950nm) in the entire field of view falls within the range of -19 to 10μm. Figure 35C Among the field curvature aberrations in the tangential direction, the focal length changes of the three representative wavelengths within the entire field of view fall within the range of -10 to 9 μm. Figure 35D The distortion aberration is maintained within the range of -4.8% to 6%. Compared with the first embodiment, the longitudinal spherical aberration, sagittal field curvature aberration and distortion aberration of this embodiment are smaller.

[0167] The above data shows that the various optical properties of the optical imaging lens 8 meet the imaging quality requirements of the optical system. This shows that the optical imaging lens 8 of this embodiment can effectively provide better imaging quality while providing a system length of 4.198 mm compared to conventional optical lenses.

[0168] Figure 38A 、 38BThe numerical values of the parameter combinations of the above eight embodiments are listed, and the detailed optical data and tables of the embodiments show that the optical imaging lenses of the present application can indeed satisfy any one of the aforementioned conditional expressions (1) to (20).

[0169] The longitudinal spherical aberration, the field curvature aberration, and the distortion aberration of each embodiment of the optical imaging lenses of the present application all conform to the usage specifications. In addition, the off-axis light rays at different heights of the three representative wavelengths are all concentrated near the imaging point, and the deviation of the imaging points of the off-axis light rays at different heights is controlled as shown by the deflection amplitudes of each curve, thereby having good spherical aberration, aberration, and distortion suppression capabilities. Further referring to the imaging quality data, the distances between the three representative wavelengths are also quite close to each other, which shows that the present application has excellent dispersion suppression capabilities in various states with good concentration of light rays of different wavelengths. In summary, the present application can produce excellent imaging quality by the design and mutual matching of the lenses.

[0170] The disclosed content of each embodiment of the present application includes but is not limited to optical parameters such as focal length, lens thickness, Vd Abbe number, etc. For example, the present application discloses an optical parameter A and an optical parameter B in each embodiment, and the specific explanations of the ranges covered by the optical parameters, the comparison relationships between the optical parameters, and the conditional expression ranges covered by the multiple embodiments are as follows:

[0171] (1) The range covered by the optical parameters, for example: α2≦A≦α1 or β2≦B≦β1, where α1 is the maximum value of the optical parameter A in the multiple embodiments, α2 is the minimum value of the optical parameter A in the multiple embodiments, β1 is the maximum value of the optical parameter B in the multiple embodiments, and β2 is the minimum value of the optical parameter B in the multiple embodiments.

[0172] (2) The comparison relationship between the optical parameters, for example: A is greater than B or A is less than B.

[0173] (3) The conditional expression range covered by the multiple embodiments, specifically, the combination relationship or proportional relationship obtained by possible operations of multiple optical parameters of the same embodiment, which is defined as E. E can be, for example: A+B or A-B or A / B or A*B or (A*B) 1 / 2 and E satisfies the conditional expression E≦γ1 or E≧γ2 or γ2≦E≦γ1, where γ1 and γ2 are the values obtained by the operations of the optical parameter A and the optical parameter B of the same embodiment, and γ1 is the maximum value in the multiple embodiments of the present application, and γ2 is the minimum value in the multiple embodiments of the present application.

[0174] The above-mentioned range covered by the optical parameters, the comparison relationship between the optical parameters, and the maximum value, the minimum value, and the numerical range within the maximum value and the minimum value of the conditional expressions are all features that can be implemented by the present application, and all belong to the disclosed range of the present application. The above is only an example and should not be limited thereto.

[0175] Embodiments of the present application can be implemented and can extract a combination of features in the same embodiment that achieve unexpected results compared to the prior art, including but not limited to the combination of features such as face shape, refractive power, and conditional expressions. The disclosure of the embodiments of the present application is to illustrate the specific embodiments of the principles of the present application, and should not be limited to the disclosed embodiments. Further, the embodiments and drawings are only exemplary of the present application, and are not limited thereto.

Claims

1. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; in, A circumferential area of ​​the object-side surface of the third lens is a convex surface; An optical axis region of the image-side surface of the fourth lens is a convex surface, and a circumferential region of the image-side surface of the fourth lens is a convex surface; An optical axis region of the image-side surface of the fifth lens is concave; An optical axis region of the image-side surface of the sixth lens is concave; The optical imaging lens comprises only the aforementioned six lenses and satisfies the following conditions: 0.70≦V2 / V3≦1.40 and 2.85≦EFL / (Fno*D11t21); Wherein, V2 represents the Vd Abbe number of the second lens element, V3 represents the Vd Abbe number of the third lens element, EFL represents the effective focal length of the optical imaging lens element, Fno represents the aperture value of the optical imaging lens element, and D11t21 represents the distance from the object side surface of the first lens element to the object side surface of the second lens element on the optical axis; and In the optical imaging lens, the thickest lens is any one of the second lens, the third lens, and the fourth lens, and the thinnest lens is any one of the fifth lens and the sixth lens.

2. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; in, A circumferential area of ​​the object-side surface of the third lens is a convex surface; An optical axis region of the image-side surface of the fourth lens is a convex surface, and a circumferential region of the image-side surface of the fourth lens is a convex surface; An optical axis region of the object-side surface of the fifth lens is a convex surface; An optical axis region of the image-side surface of the sixth lens is concave; The optical imaging lens comprises only the aforementioned six lenses and satisfies the following conditions: 0.70≦V2 / V3≦1.40 and 2.85≦EFL / (Fno*D11t21); Wherein, V2 represents the Vd Abbe number of the second lens element, V3 represents the Vd Abbe number of the third lens element, EFL represents the effective focal length of the optical imaging lens element, Fno represents the aperture value of the optical imaging lens element, and D11t21 represents the distance from the object side surface of the first lens element to the object side surface of the second lens element on the optical axis; and In the optical imaging lens, the thickest lens is any one of the second lens, the third lens, and the fourth lens, and the thinnest lens is any one of the fifth lens and the sixth lens.

3. The optical imaging lens according to any one of claims 1 and 2, wherein the optical imaging lens further satisfies TL / (T2+T3+T5)≦3.00, where TL represents the distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element, T2 represents the thickness of the second lens element on the optical axis, T3 represents the thickness of the third lens element on the optical axis, and T5 represents the thickness of the fifth lens element on the optical axis.

4. The optical imaging lens according to any one of claims 1 and 2, wherein the optical imaging lens further satisfies TL / (G12+T2+G23)≦5.30, where TL represents the distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element, G12 represents the distance on the optical axis from the image-side surface of the first lens element to the object-side surface of the second lens element, T2 represents the thickness of the second lens element on the optical axis, and G23 represents the distance on the optical axis from the image-side surface of the second lens element to the object-side surface of the third lens element.

5. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; in, A circumferential area of ​​the object-side surface of the third lens is a convex surface; An optical axis region of the image-side surface of the fourth lens is a convex surface, and a circumferential region of the image-side surface of the fourth lens is a convex surface; An optical axis region of the object-side surface of the fifth lens is a convex surface; An optical axis region of the image-side surface of the sixth lens is concave; The optical imaging lens comprises only the aforementioned six lenses and satisfies the following conditions: 0.70≦V2 / V3≦1.40 and TL*Fno / EFL≦2.90; Wherein, V2 represents the Vd Abbe number of the second lens element, V3 represents the Vd Abbe number of the third lens element, TL represents the distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element on the optical axis, Fno represents the aperture value of the optical imaging lens element, and EFL represents the effective focal length of the optical imaging lens element; and In the optical imaging lens, the thickest lens is any one of the second lens, the third lens, and the fourth lens, and the thinnest lens is any one of the fifth lens and the sixth lens.

6. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies V6 / V5≧1.80, where V6 represents the Vd Abbe number of the sixth lens element, and V5 represents the Vd Abbe number of the fifth lens element.

7. The optical imaging lens according to any one of claims 1, 2, and 5, further satisfying AAG / D12t22 ≤ 3.00, where AAG represents the sum of five air gaps between the first lens element and the sixth lens element on the optical axis, and D12t22 represents the distance between the image-side surface of the first lens element and the image-side surface of the second lens element on the optical axis.

8. The optical imaging lens according to any one of claims 1, 2, or 5, wherein the optical imaging lens further satisfies (D41t51+D52t62) / (T3+T5)≦1.90, where D41t51 is the distance on the optical axis from the object-side surface of the fourth lens element to the object-side surface of the fifth lens element, D52t62 is the distance on the optical axis from the image-side surface of the fifth lens element to the image-side surface of the sixth lens element, T3 represents the thickness of the third lens element on the optical axis, and T5 represents the thickness of the fifth lens element on the optical axis.

9. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies (T1+BFL) / T2≦3.50, where T1 represents the thickness of the first lens element on the optical axis, BFL represents the back focal length of the optical imaging lens, and T2 represents the thickness of the second lens element on the optical axis.

10. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies EFL*Fno / D12t22≦12.00, where D12t22 is the distance from the image-side surface of the first lens element to the image-side surface of the second lens element on the optical axis.

11. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies (T1+G23+T6) / T3≦3.60, where T1 represents the thickness of the first lens element on the optical axis, G23 represents the distance on the optical axis from the image-side surface of the second lens element to the object-side surface of the third lens element, T6 represents the thickness of the sixth lens element on the optical axis, and T3 represents the thickness of the third lens element on the optical axis.

12. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies TTL / (G12+G23+G45)≦11.00, where TTL represents the system length of the optical imaging lens, G12 represents the distance on the optical axis from the image-side surface of the first lens element to the object-side surface of the second lens element, G23 represents the distance on the optical axis from the image-side surface of the second lens element to the object-side surface of the third lens element, and G45 represents the distance on the optical axis from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element.

13. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies EFL*Fno / (T2+T5)≦7.00, where T2 represents the thickness of the second lens element along the optical axis, and T5 represents the thickness of the fifth lens element along the optical axis.

14. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies (G45 + D52t62) / T2 ≤ 3.30, where G45 represents the distance on the optical axis from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element, D52t62 represents the distance on the optical axis from the image-side surface of the fifth lens element to the image-side surface of the sixth lens element, and T2 represents the thickness of the second lens element on the optical axis.

15. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies (ImgH+BFL) / D12t31≦4.30, where ImgH represents the maximum image height of the optical imaging lens, BFL represents the back focal length of the optical imaging lens, and D12t31 represents the distance on the optical axis from the image-side surface of the first lens element to the object-side surface of the third lens element.

16. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies V6 / V4≦1.20, where V6 represents the Vd Abbe number of the sixth lens element, and V4 represents the Vd Abbe number of the fourth lens element.

17. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies HFOV / Fno≦29.70 degrees, where HFOV represents a half viewing angle of the optical imaging lens.

18. The optical imaging lens according to any one of claims 1, 2, and 5, further satisfying ALT / (T2+T5)≦4.70, where ALT represents the total thickness of the six lenses along the optical axis, T2 represents the thickness of the second lens along the optical axis, and T5 represents the thickness of the fifth lens along the optical axis.

19. The optical imaging lens according to any one of claims 1, 2, and 5, wherein the optical imaging lens further satisfies (EFL+BFL) / D12t22≦9.00, where BFL represents a back focal length of the optical imaging lens, and D12t22 represents a distance on the optical axis from the image-side surface of the first lens element to the image-side surface of the second lens element.

20. The optical imaging lens according to any one of claims 1, 2, or 5, wherein the optical imaging lens further satisfies (T3+G34+G45)(G12+G23)≦2.50, where T3 represents the thickness of the third lens on the optical axis, G34 represents the distance on the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens, G45 represents the distance on the optical axis from the image-side surface of the fourth lens to the object-side surface of the fifth lens, G12 represents the distance on the optical axis from the image-side surface of the first lens to the object-side surface of the second lens, and G23 represents the distance on the optical axis from the image-side surface of the second lens to the object-side surface of the third lens.

21. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; in, The material of the first lens satisfies the following requirements: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; A circumferential region of the image-side surface of the third lens element is a concave surface, or an optical axis region of the image-side surface of the fifth lens element is a concave surface; and The optical imaging lens has only the aforementioned six lenses and satisfies the following condition: 0.70≦V2 / V3≦1.40; Wherein, V2 represents the Vd Abbe number of the second lens element, and V3 represents the Vd Abbe number of the third lens element.

22. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; in, The material of the first lens satisfies the following requirements: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; An optical axis region of the object-side surface of the fourth lens is a concave surface, or a circumferential region of the object-side surface of the fourth lens is a concave surface; An optical axis region of the image-side surface of the fifth lens is concave; The optical imaging lens consists of only the six lenses mentioned above; and In the optical imaging lens, the thickest lens is any one of the second lens, the third lens, and the fourth lens.

23. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; in, The material of the first lens satisfies the following requirements: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; An optical axis region of the object-side surface of the fourth lens is concave; A circumferential region of the object-side surface of the fifth lens element is concave, or an optical axis region of the image-side surface of the fifth lens element is concave, or an optical axis region of the object-side surface of the sixth lens element is convex, or an optical axis region of the image-side surface of the sixth lens element is concave; The optical imaging lens consists of only the six lenses mentioned above; and In the optical imaging lens, the maximum air gap is between the first lens and the second lens on the optical axis, or between the fifth lens and the sixth lens on the optical axis.

24. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; The material of the first lens satisfies the following requirements: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; An optical axis region of the image-side surface of the fourth lens element is a convex surface; and The optical imaging lens has only the six lenses mentioned above and satisfies the following condition: TL*Fno / EFL≦2.90; in, TL represents the distance from the object-side surface of the first lens to the image-side surface of the sixth lens on the optical axis, Fno represents the aperture value of the optical imaging lens, and EFL represents the effective focal length of the optical imaging lens.

25. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; The material of the first lens satisfies the following requirements: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; An optical axis region of the image-side surface of the second lens element is concave, or an optical axis region of the object-side surface of the third lens element is convex, or an optical axis region of the object-side surface of the fourth lens element is concave, or an optical axis region of the image-side surface of the fourth lens element is convex, or a circumferential region of the image-side surface of the fifth lens element is convex; A circumferential area of ​​the image-side surface of the sixth lens is a convex surface; and The optical imaging lens has only the six lenses mentioned above and satisfies the following condition: 2.85≦EFL / (Fno*D11t21); in, EFL represents the effective focal length of the optical imaging lens, Fno represents the aperture value of the optical imaging lens, and D11t21 is the distance from the object side surface of the first lens to the object side surface of the second lens on the optical axis.

26. An optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first to sixth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes; The material of the first lens satisfies the following requirements: the transmittance of light with a wavelength of 400 nm is less than or equal to 25%, the transmittance of light with a wavelength of 500 nm is less than or equal to 25%, the transmittance of light with a wavelength of 600 nm is less than or equal to 25%, and the transmittance of light with a wavelength of 900 nm is greater than or equal to 75%; A circumferential area of ​​the image-side surface of the third lens element is concave, or the fourth lens element has a negative refractive power, or an optical axis area of ​​the object-side surface of the fourth lens element is concave, or a circumferential area of ​​the object-side surface of the fourth lens element is concave, or the fifth lens element has a positive refractive power, or an optical axis area of ​​the object-side surface of the fifth lens element is convex, or the sixth lens element has a negative refractive power, or a circumferential area of ​​the object-side surface of the sixth lens element is concave, or an optical axis area of ​​the image-side surface of the sixth lens element is concave; An optical axis region of the image-side surface of the fifth lens is concave; The optical imaging lens consists of only the six lenses mentioned above; and In the optical imaging lens, the thinnest lens is either the fifth lens or the sixth lens.

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