Optical photographic lens

Abstract

The utility model discloses an optical photographic lens, which comprises a lens barrel with an accommodating space, and a first assembly, a second assembly and at least one spacing element accommodated in the lens barrel, and is characterized in that the first assembly comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side along an optical axis; the second assembly comprises a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object side to the image side along the optical axis; the at least one spacer element includes a fourth spacer element located between the fourth lens and the fifth lens and in direct contact with the image side of the fourth lens, and a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth lens; the optical photographic lens further comprises a driving assembly, and the driving assembly drives the second assembly to move along the optical axis. The effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens and the interval EP45 between the fourth spacing element and the fifth spacing element meet the following condition: 5.0 < f4 / EP45 < = 5.51; 15.0 < f5 / EP45 < 16.5.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and specifically, to an optical photographic lens including multiple lenses. Background Art

[0002] With the rapid development of intelligent terminal devices such as mobile phones, people increasingly use the optical photographic lenses of intelligent terminal devices as daily shooting devices, and the requirements for the thinness, lightness and imaging quality of the devices are also getting higher and higher.

[0003] In order to meet the continuously increasing requirements for the imaging quality of optical photographic lenses, the number of lenses has gradually increased from three to six or more. However, as the number of lens elements in the lens increases, the mechanisms and components for supporting and mounting also increase, and the components that can generate stray light also continuously increase, which is contrary to the requirements for the thinness, lightness and miniaturization of the device.

[0004] In addition, some lenses may include multiple lens groups, and at least one lens group can move along the optical axis so that there is a relative displacement between adjacent lens groups. However, this type of lens structure will cause internal reflection stray light to easily occur in some lens structure regions.

[0005] In summary, for a six-element lens, how to further optimize the structural design of the optical photographic lens to make the lens group more compact, and at the same time effectively limit the reflected stray light of the marginal light rays in the fifth lens structure region inside the lens, so as to improve the imaging quality of the lens, has always been the goal pursued by those skilled in the art. Summary of the Utility Model

[0006] According to one aspect of the present application, there is provided an optical photographic lens, which includes a lens barrel having an accommodation space, and a first component, a second component and at least one spacer element accommodated in the lens barrel. The first component includes a first lens, a second lens and a third lens sequentially arranged from the object side to the image side along the optical axis; the second component includes a fourth lens, a fifth lens and a sixth lens sequentially arranged from the object side to the image side along the optical axis; at least one spacer element includes: a fourth spacer element located between the fourth lens and the fifth lens and in direct contact with the image side of the fourth lens, and a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth lens; wherein, the number of lenses having optical power in the optical photographic lens is six; the optical photographic lens further includes a driving component for driving the second component to move along the optical axis; the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: 5.0 < f4 / EP45 ≤ 5.51; 15.0 < f5 / EP45 < 16.5.

[0007] According to an exemplary embodiment of the present application, the effective focal length f1 of the first lens and the interval EP12 between the first spacer element and the second spacer element satisfy: 11.0 < f1 / EP12 < 13.0.

[0008] According to an exemplary embodiment of the present application, the central thickness CT5 of the fifth lens on the optical axis and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: 1.1 < EP45 / CT5 < 1.3.

[0009] According to an exemplary embodiment of the present application, at least one spacer element further includes a fifth sub - auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the sixth lens. The radius of curvature R11 of the object side surface of the sixth lens, the outer diameter D5em of the image side surface of the fifth sub - auxiliary spacer element, and the inner diameter d5em of the image side surface of the fifth sub - auxiliary spacer element satisfy: 6.9 < R11 / (D5em - d5em) < 11.0.

[0010] According to an exemplary embodiment of the present application, the lens barrel is a split lens barrel, which includes a first sub - lens barrel and a second sub - lens barrel. The inner diameter d10m of the surface of the second sub - lens barrel closest to the imaging surface, the radius of curvature R12 of the image side surface of the sixth lens, and the refractive index N6 of the sixth lens satisfy: 2.4 < R12*N6 / d10m < 2.75.

[0011] According to an exemplary embodiment of the present application, the air interval T56 between the fifth lens and the sixth lens on the optical axis and the maximum thickness CP5 of the fifth spacer element satisfy: 0.8 < T56 / CP5 < 1.3.

[0012] According to an exemplary embodiment of the present application, at least one spacer element further includes a fifth auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth spacer element, and a fifth sub - auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the sixth lens. The maximum thickness CP5b of the fifth auxiliary spacer element, the maximum thickness CP5e of the fifth sub - auxiliary spacer element, and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the effective radius vertex of the image side surface of the fifth lens satisfy: 0.35 < (CP5b + CP5e) / |SAG52| < 0.6.

[0013] According to an exemplary embodiment of the present application, the central thickness CT4 of the fourth lens on the optical axis, the air interval T45 between the fourth lens and the fifth lens on the optical axis, and the interval EP104 between the front end surface of the lens barrel and the fourth spacer element satisfy: 3.2 < (CT4 + T45) / EP104 < 3.9.

[0014] According to an exemplary embodiment of the present application, at least one spacer element further includes a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens. The central thickness CT3 of the third lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the maximum thickness CP2 of the second spacer element satisfy: 2.6 < CT3 / (CT2 + CP2) < 2.9.

[0015] According to an exemplary embodiment of the present application, at least one spacer element further includes a second auxiliary spacer element located between the second lens and the third lens and in direct contact with the image side of the second spacer element. The air gap T23 between the second lens and the third lens on the optical axis and the maximum thickness CP2b of the second auxiliary spacer element satisfy: 0.85 < T23 / CP2b < 1.0.

[0016] According to an exemplary embodiment of the present application, at least one spacer element further includes a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens. The gap EP01 between the surface of the lens barrel closest to the object side and the first spacer element and the central thickness CT1 of the first lens on the optical axis satisfy: 0.4 < CT1 / EP01 < 1.4.

[0017] According to an exemplary embodiment of the present application, at least one spacer element further includes a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens, and a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens. The inner diameter d1m of the image side surface of the first spacer element, the inner diameter d2s of the object side surface of the second spacer element, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -2.4 < d1m / R3 < -2.2; -2.0 < d2s / R4 < -1.9.

[0018] According to an exemplary embodiment of the present application, the lens barrel is a split lens barrel, which includes a first sub-lens barrel and a second sub-lens barrel. The inner diameter d0m of the surface of the first sub-lens barrel closest to the imaging surface, the inner diameter d10s of the surface of the second sub-lens barrel closest to the object side, the curvature radius R6 of the image side surface of the third lens, and the curvature radius R7 of the object side surface of the fourth lens satisfy: 1.1 < d0m / R6 < 1.3; 0.8 < d10s / R7 < 1.0.

[0019] According to an exemplary embodiment of the present application, the optical photographic lens further includes a prism with a retrofolding function, and the prism is located on the object side of the first component; the prism has a first surface and a second surface, both the first surface and the second surface are aspherical surfaces, and the focal length Fg of the prism, the radius of curvature RS1 of the first surface of the prism, and the radius of curvature RS2 of the second surface of the prism satisfy: -5.7 < Fg / RS1 ≤ -5.3; -11.0 ≤ Fg / RS2 < -10.1.

[0020] According to an exemplary embodiment of the present application, the first lens has a positive optical power, its object side surface is convex, and its image side surface is convex; the second lens has a negative optical power, its object side surface is concave, and its image side surface is convex; the third lens has a negative optical power, its object side surface is convex, and its image side surface is concave; the fourth lens has a positive optical power, its object side surface is convex, and its image side surface is convex; the fifth lens has a positive optical power, its object side surface is concave, and its image side surface is convex; and the sixth lens has a positive optical power, its object side surface is convex, and its image side surface is concave.

[0021] The optical photographic lens provided by the present application adopts a six-lens group. In order to meet the requirements of high imaging quality and reduce aberrations, the lenses are designed into a shape with a large curvature to narrow the gap between the incident angles of the central light rays and the marginal light rays. However, this also poses a challenge to the assembly stability. The optical photographic lens according to the exemplary embodiment of the present application can simultaneously satisfy 5.0 < f4 / EP45 ≤ 5.51 and 15.0 < f5 / EP45 < 16.5. While making the effective focal lengths of the fourth lens and the fifth lens meet the imaging requirements, control the thickness of the mechanical part of the fifth lens to avoid it being too large and affecting the assembly stability of the optical photographic lens, and at the same time, can effectively limit the path of the marginal light rays in the mechanical part of the fifth lens, reduce the number of reflections of stray light in the structural area of the fifth lens, and further weaken the influence of stray light on the imaging effect, thereby improving the imaging quality. Description of the Drawings

[0022] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more obvious:

[0023] Figure 1A Shows the structure and partial parameter schematic diagram of the optical photographic lens according to the embodiment of the present application;

[0024] Figure 1B Shows the composition schematic diagram of the optical photographic lens according to the embodiment of the present application;

[0025] Figure 2 Shows the structural schematic diagram of the optical photographic lens according to Embodiment 1 of the present application;

[0026] Figure 3Shows a schematic structural diagram of an optical photographic lens according to Embodiment 2 of the present application;

[0027] Figures 4A to 4D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical photographic lens according to Embodiment 1 and Embodiment 2 of the present application;

[0028] Figure 5 Shows a schematic structural diagram of an optical photographic lens according to Embodiment 3 of the present application;

[0029] Figure 6 Shows a schematic structural diagram of an optical photographic lens according to Embodiment 4 of the present application;

[0030] Figures 7A to 7D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical photographic lens according to Embodiment 3 and Embodiment 4 of the present application;

[0031] Figure 8 Shows a schematic structural diagram of an optical photographic lens according to Embodiment 5 of the present application;

[0032] Figure 9 Shows a schematic structural diagram of an optical photographic lens according to Embodiment 6 of the present application;

[0033] Figures 10A to 10D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical photographic lens according to Embodiment 5 and Embodiment 6 of the present application;

[0034] Figure 11 Shows a schematic structural diagram of an optical photographic lens according to Embodiment 7 of the present application;

[0035] Figure 12 Shows a schematic structural diagram of an optical photographic lens according to Embodiment 8 of the present application;

[0036] Figures 13A to 13D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical photographic lens according to Embodiment 7 and Embodiment 8 of the present application;

[0037] Figure 14 Shows a schematic diagram of stray light of the optical photographic lens under the conditions of f4 / EP45 = 4.85 and f5 / EP45 = 14.8;

[0038] Figure 15 Shows a schematic diagram of stray light of the optical photographic lens under the conditions of f4 / EP45 = 6.2 and f5 / EP45 = 17.1; and

[0039] Figure 16The schematic diagram of stray light of the optical photographic lens under the conditions of f4 / EP45 = 5.05 and f5 / EP45 = 15.05 is shown. Detailed implementation manners

[0040] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0041] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0042] In the accompanying drawings, for the sake of convenience of illustration, the thickness, size and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0043] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0044] It should also be understood that the terms "comprise", "comprising", "have", "include" and / or "including", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after the list of listed features, it modifies the entire list of listed features, rather than modifying a single element in the list. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0045] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0046] It should be noted that, without conflict, the embodiments and features in the embodiments of this application may be combined with each other. The following embodiments only express several implementation manners of this application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all belong to the protection scope of this application. For example, the lens groups (i.e., the first lens to the sixth lens), barrel structures, and spacer elements in the embodiments of this application can be combined arbitrarily, and it is not limited that the lens group in one embodiment can only be combined with the barrel structure, spacer element, etc. of that embodiment.

[0047] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Among them, FIG. 1 shows a structural layout diagram of an optical photographic lens according to the present application and a schematic diagram of some parameters. Those skilled in the art should understand that some parameters often used in this field, such as the central thickness CT1 of the first lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, etc., are not shown in FIG. 1. FIG. 1 only exemplarily shows the barrel of an optical photographic lens of the present application and some parameters of the spacer elements for better understanding of the present invention. As shown in FIG. 1, EP01 represents the distance along the optical axis between the front end face of the barrel near the object side and the object side surface of the first spacer element; EP12 represents the distance along the optical axis between the image side surface of the first spacer element and the object side surface of the second spacer element; EP45 represents the distance along the optical axis between the image side surface of the fourth spacer element and the object side surface of the fifth spacer element; CP2 represents the maximum thickness of the second spacer element along the optical axis; CP2b represents the maximum thickness of the second auxiliary spacer element along the optical axis; CP5 represents the maximum thickness of the fifth spacer element along the optical axis; CP5b represents the maximum thickness of the fifth auxiliary spacer element along the optical axis; CP5e represents the maximum thickness of the fifth secondary auxiliary spacer element along the optical axis; SAG52 represents the axial distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens; d0m represents the inner diameter of the surface of the barrel P0 closest to the imaging surface; d10m represents the inner diameter of the surface of the barrel P10 closest to the imaging surface; d1s represents the inner diameter of the object side surface of the first spacer element; D1m represents the outer diameter of the image side surface of the first spacer element; d1m represents the inner diameter of the image side surface of the first spacer element; D2s represents the outer diameter of the object side surface of the second spacer element; d2s represents the inner diameter of the object side surface of the second spacer element; D2m represents the outer diameter of the image side surface of the second spacer element; d2m represents the inner diameter of the image side surface of the second spacer element, and so on.

[0048] The features, principles, and other aspects of the present application will be described in detail below.

[0049] Referring to Figure 1B , Figure 2 and Figure 3 shown, a first aspect of the present application provides such an optical photographic lens, which may include a barrel having an accommodation space, and a first component 100, a second component 200, and at least one spacer element accommodated in the barrel. The first component may include a first lens E1, a second lens E2, and a third lens E3 arranged in sequence from the object side to the image side along the optical axis. The second component may include a fourth lens E4, a fifth lens E5, and a sixth lens E6 arranged in sequence from the object side to the image side along the optical axis. An air gap may be provided between any two adjacent lenses among the first lens E1 to the sixth lens E6.

[0050] In an exemplary embodiment, the first component 100 is fixed along the optical axis. The second component 200 is movable along the optical axis from the object side to the image side, or from the image side to the object side.

[0051] In an exemplary embodiment, the optical photographic lens further includes a driving component 300. The driving component 300 can drive the second component 200 to move along the optical axis so as to generate a relative displacement between the first component 100 and the second component 200.

[0052] In an exemplary embodiment, the optical photographic lens may further include a prism G with a folding function, which may be located on the object side of the first component. By combining the lens group with the prism G having a folding function, the volume of the lens can be reduced and the lens structure can be made more compact. The prism G may have at least one aspherical surface. Exemplarily, the prism G may have a first surface S1 and a second surface S2, and both the first surface S1 and the second surface S2 are aspherical surfaces.

[0053] In an exemplary embodiment, the first lens E1 may have a positive optical power. The second lens E2 may have a negative optical power. The third lens E3 may have a negative optical power. The fourth lens E4 may have a positive optical power. The fifth lens E5 may have a positive optical power. The sixth lens E6 may have a positive optical power.

[0054] In an exemplary embodiment, the lens group may have at least one trimmed lens. The outer peripheral surface of the trimmed lens may have a trimmed portion and an untrimmed portion, and the outer diameter of the trimmed portion of the lens is smaller than the outer diameter of the untrimmed portion of the lens. When the outer peripheral surface of the lens has a trimmed portion, the outer diameter of the lens generally refers to the outer diameter of the untrimmed portion of the lens.

[0055] It should be understood that the surface of each optical element (such as a lens, a spacer element) closest to the object to be photographed is called the object side surface of the optical element, and the surface of each optical element closest to the imaging surface is called the image side surface of the optical element. The surface of the lens barrel closest to the object to be photographed is called the object side end face or the front end face of the lens barrel, and the surface of the lens barrel closest to the imaging surface is called the image side end face or the rear end face of the lens barrel.

[0056] In an exemplary embodiment, the lens barrel may be an integral lens barrel, which has a first end face (also called the front end face) close to the object side and a second end face (also called the rear end face) close to the imaging surface.

[0057] In an exemplary embodiment, the lens barrel may also be a split lens barrel, which may include a first sub-lens barrel P0 and a second sub-lens barrel P10. Exemplarily, the first component may be accommodated in the first sub-lens barrel P0, and the second component may be accommodated in the second sub-lens barrel P10.

[0058] An optical photographic lens according to an exemplary embodiment of the present application includes at least one spacer element, which may include any one or more of the following spacer elements: a first spacer element P1 located between the first lens and the second lens and in direct contact with the image side of the first lens, a second spacer element P2 located between the second lens and the third lens and in direct contact with the image side of the second lens, a fourth spacer element P4 located between the fourth lens and the fifth lens and in direct contact with the image side of the fourth lens, a fifth spacer element P5 located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth lens, and so on.

[0059] In an exemplary embodiment, at least one spacer element may further include one or more auxiliary spacer elements, or may further include one or more sub-auxiliary spacer elements. For example: a second auxiliary spacer element P2b, which may be located between the second lens E2 and the third lens E3 and in direct contact with the image side of the second spacer element P2; a fifth auxiliary spacer element P5b, which may be located between the fifth lens E5 and the sixth lens E6 and in direct contact with the image side of the fifth spacer element P5; a fifth sub-auxiliary spacer element P5e, which may be located between the fifth lens E5 and the sixth lens E6 and in direct contact with the object side of the sixth lens E6. Exemplarily, the spacer element, the auxiliary spacer element or the sub-auxiliary spacer element may include a spacer, a light-shielding sheet, a spacer ring or a retaining ring, etc. By reasonably setting the number, thickness, inner diameter and outer diameter of the spacer element, it is beneficial to block stray light, improve the imaging quality of the optical photographic lens, and improve the assembly stability of the optical photographic lens.

[0060] The optical photographic lens according to an exemplary embodiment of the present application can simultaneously satisfy 5.0 < f4 / EP45 ≤ 5.51 and 15.0 < f5 / EP45 < 16.5, where f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, and EP45 is the distance between the fourth spacer element and the fifth spacer element. By controlling the ratio of the effective focal length of the fourth lens, the effective focal length of the fifth lens to the distance EP45 between the fourth spacer element and the fifth spacer element within a reasonable range, the effective focal lengths of the fourth lens and the fifth lens can meet the imaging requirements, and the path of the marginal rays in the fifth lens mechanism part can be restricted, reducing the number of reflections of stray light in the fifth lens structure area, thereby weakening the influence of stray light on the imaging effect and improving the imaging quality; at the same time, by controlling the size of the distance EP45 between the fourth spacer element and the fifth spacer element, the thickness of the mechanism part of the fifth lens can also be controlled to avoid being too large and affecting the assembly stability of the optical photographic lens.

[0061] According to an exemplary embodiment of the present application, the effective focal length f1 of the first lens and the interval EP12 between the first spacer element and the second spacer element satisfy: 11.0 < f1 / EP12 < 13.0. By satisfying this conditional expression, the thickness of the mechanical part of the second lens can be controlled, the thickness of the second lens can be made uniform, the formability of the second lens can be improved, and the assembly stability can be ensured.

[0062] According to an exemplary embodiment of the present application, the central thickness CT5 of the fifth lens on the optical axis and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: 1.1 < EP45 / CT5 < 1.3. By satisfying this conditional expression, the structural thickness of the optical region and the non-optical region of the fifth lens can be made relatively uniform, the formability of the fifth lens can be improved, the assembly stability of the fifth lens and the fifth spacer element can be ensured, and the assembly stability of the sixth lens can also be improved, thereby improving the performance yield of the optical assembly.

[0063] According to an exemplary embodiment of the present application, at least one spacer element further includes a fifth auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the sixth lens. The radius of curvature R11 of the object side surface of the sixth lens, the outer diameter D5em of the image side surface of the fifth auxiliary spacer element, and the inner diameter d5em of the image side surface of the fifth auxiliary spacer element satisfy: 6.9 < R11 / (D5em - d5em) < 11.0. By satisfying this conditional expression, the difference between the outer and inner diameters of the fifth auxiliary spacer element P5e can be effectively controlled, the processability of the fifth auxiliary spacer element P5e can be ensured, and the fifth auxiliary spacer element P5e can block excess light, improve the stray light of the optical photography lens, and thus improve the imaging quality of the optical photography lens.

[0064] According to an exemplary embodiment of the present application, the lens barrel is a split lens barrel, which includes a first sub-lens barrel and a second sub-lens barrel. The inner diameter d10m of the surface of the second sub-lens barrel closest to the imaging surface, the radius of curvature R12 of the image side surface of the sixth lens, and the refractive index N6 of the sixth lens satisfy: 2.4 < R12*N6 / d10m < 2.75. By satisfying this conditional expression, the radius of curvature of the image side surface of the sixth lens can be controlled, the shape of the sixth lens can be controlled, and the formability of the sixth lens can be improved; at the same time, by controlling the refractive index of the sixth lens within a reasonable range, it is beneficial to avoid large-angle deflection of light, reduce the risk of stray light, and thus improve the imaging quality.

[0065] According to an exemplary embodiment of the present application, the air gap T56 between the fifth lens and the sixth lens on the optical axis and the maximum thickness CP5 of the fifth spacer element satisfy: 0.8 < T56 / CP5 < 1.3. By satisfying this conditional expression, by controlling the size of the air gap between the fifth lens and the sixth lens and adjusting the on-axis distance between the fifth lens and the sixth lens, it helps to compensate for the change in the field curvature of the optical photographic lens, thereby improving the imaging quality of the optical photographic lens.

[0066] According to an exemplary embodiment of the present application, at least one spacer element further includes a fifth auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth spacer element, and a fifth secondary auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the sixth lens, wherein the maximum thickness CP5b of the fifth auxiliary spacer element, the maximum thickness CP5e of the fifth secondary auxiliary spacer element, and the on-axis distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens satisfy: 0.35 < (CP5b + CP5e) / |SAG52| < 0.6. By satisfying this conditional expression, not only can the maximum thickness of the fifth secondary auxiliary spacer element P5e and the maximum thickness of the fifth auxiliary spacer element P5b be limited within a reasonable range to avoid being too large and affecting the assembly stability and imaging quality of the optical photographic lens, but also it can ensure that the fifth secondary auxiliary spacer element P5e has a relatively large light-shielding area. The larger the light-shielding area of the fifth secondary auxiliary spacer element P5e, the more stray light passing through the sixth lens it blocks, which is beneficial to improving the imaging quality of the entire optical photographic lens.

[0067] According to an exemplary embodiment of the present application, the central thickness CT4 of the fourth lens on the optical axis, the air gap T45 between the fourth lens and the fifth lens on the optical axis, and the gap EP104 between the front end surface of the lens barrel and the fourth spacer element satisfy: 3.2 < (CT4 + T45) / EP104 < 3.9. By satisfying this conditional expression, by controlling the value of (CT4 + T45) / EP104 within a reasonable range, it can ensure that the group assembly of the second component is more stable; at the same time, by controlling the size of the air gap between the lenses, it is beneficial to reducing the influence of the air gap on the performance parameters of the camera lens.

[0068] According to an exemplary embodiment of the present application, at least one spacer element further includes a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens. The central thickness CT3 of the third lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the maximum thickness CP2 of the second spacer element satisfy: 2.6 < CT3 / (CT2 + CP2) < 2.9. By satisfying this conditional expression and controlling the central thicknesses of the second lens and the third lens, the uniformity of the thicknesses of the second lens and the third lens is effectively ensured, which helps with the molding of the second lens and the third lens and improves the molding yield of the second lens and the third lens.

[0069] According to an exemplary embodiment of the present application, at least one spacer element further includes a second auxiliary spacer element located between the second lens and the third lens and in direct contact with the image side of the second spacer element. The air gap T23 between the second lens and the third lens on the optical axis and the maximum thickness CP2b of the second auxiliary spacer element satisfy: 0.85 < T23 / CP2b < 1.0. By satisfying this conditional expression, the axial difference between the second lens and the third lens is controlled to ensure the rationality of the axial distribution of the lens, which helps with the stability of the lens structure assembly; at the same time, by controlling the thickness of the second auxiliary spacer element, the uniformity of the axial dimensions and the stability of the third lens during the assembly process can be ensured, thereby improving the product yield.

[0070] According to an exemplary embodiment of the present application, at least one spacer element further includes a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens. The gap EP01 between the surface of the lens barrel closest to the object side and the first spacer element and the central thickness CT1 of the first lens on the optical axis satisfy: 0.4 < CT1 / EP01 < 1.4. By satisfying this conditional expression, the rational arrangement of the first lens and the lens barrel in the axial direction can be reasonably controlled, which is beneficial to the assembly stability between the first lens and the lens barrel; at the same time, the thicknesses of the first lens and the lens barrel are effectively controlled, which is beneficial to the processing and molding of the first lens and the lens barrel.

[0071] According to an exemplary embodiment of the present application, at least one spacer element further includes a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens, and a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens. The inner diameter d1m of the image side surface of the first spacer element, the inner diameter d2s of the object side surface of the second spacer element, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -2.4 < d1m / R3 < -2.2; -2.0 < d2s / R4 < -1.9. When these two conditional expressions are satisfied simultaneously, on the one hand, the curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the second lens can be effectively controlled, thereby controlling the shapes of the first lens and the second lens, which is helpful for the process forming of the fourth lens and the fifth lens; at the same time, it is also helpful to control the deflection direction of light, intercept the excess light in the outer field of view, can improve the imaging quality of the lens, and effectively control the stray light risk of the lens.

[0072] According to an exemplary embodiment of the present application, the lens barrel is a split lens barrel, which includes a first sub-lens barrel and a second sub-lens barrel. The inner diameter d0m of the surface of the first sub-lens barrel closest to the imaging surface, the inner diameter d10s of the surface of the second sub-lens barrel closest to the object side, the curvature radius R6 of the image side surface of the third lens, and the curvature radius R7 of the object side surface of the fourth lens satisfy: 1.1 < d0m / R6 < 1.3; 0.8 < d10s / R7 < 1.0. When these two conditional expressions are satisfied simultaneously, on the one hand, it is beneficial to improve the uniformity of the inner diameter file structure of the lens barrel and is beneficial to improve the assembly stability of the lens; at the same time, the shapes of the third lens and the fourth lens can also be controlled, and the forming yield of the third lens and the fourth lens can be improved.

[0073] According to an exemplary embodiment of the present application, the prism has a first surface and a second surface. Both the first surface and the second surface are aspherical surfaces, and the focal length Fg of the prism, the curvature radius RS1 of the first surface of the prism, and the curvature radius RS2 of the second surface of the prism satisfy: -5.7 < Fg / RS1 ≤ -5.3; -11.0 ≤ Fg / RS2 < -10.1. When these two conditional expressions are satisfied simultaneously, by controlling the curvature radius of the first surface S1 and the curvature radius of the second surface S2 of the optical power prism, the aspherical shape of the prism can be effectively controlled, which is helpful for the forming of the prism, improves the forming yield of the prism, and at the same time, the deflection direction of light is also controlled, which can effectively improve the stray light of the lens and ensure the imaging quality of the lens.

[0074] The second aspect of the present application provides an optical photographic lens, which may include a lens barrel having an accommodation space, and a first component, a second component, and at least one spacer element accommodated in the lens barrel. The first component may include a first lens E1, a second lens E2, and a third lens E3 sequentially arranged from the object side to the image side along the optical axis. The second component may include a fourth lens E4, a fifth lens E5, and a sixth lens E6 sequentially arranged from the object side to the image side along the optical axis. An air gap may be provided between any two adjacent lenses among the first lens E1 to the sixth lens E6.

[0075] In an exemplary embodiment, the first component is fixed along the optical axis. The optical photographic lens further includes a driving component, which can drive the second component to move along the optical axis so as to generate a relative displacement between the first component and the second component.

[0076] In an exemplary embodiment, the optical photographic lens may further include a prism G with a folding function, which may be located on the object side of the first component. The prism G may have at least one aspherical surface. Exemplarily, the prism G may have a first surface S1 and a second surface S2, and both the first surface S1 and the second surface S2 are aspherical surfaces.

[0077] In an exemplary embodiment, the first lens E1 may have a positive optical power. The second lens E2 may have a negative optical power. The third lens E3 may have a negative optical power. The fourth lens E4 may have a positive optical power. The fifth lens E5 may have a positive optical power. The sixth lens E6 may have a positive optical power.

[0078] In an exemplary embodiment, at least one spacer element may include any one or more of the following spacer elements: a first spacer element P1 located between the first lens and the second lens and in direct contact with the image side of the first lens, a second spacer element P2 located between the second lens and the third lens and in direct contact with the image side of the second lens, a fourth spacer element P4 located between the fourth lens and the fifth lens and in direct contact with the image side of the fourth lens, a fifth spacer element P5 located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth lens, etc.

[0079] For an optical photographic lens according to an exemplary embodiment of the present application, the inner diameter d1m of the image side surface of the first spacer element, the inner diameter d2s of the object side surface of the second spacer element, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -2.4 < d1m / R3 < -2.2; -2.0 < d2s / R4 < -1.9. Satisfying these two conditional expressions simultaneously can, on the one hand, effectively control the curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the second lens, thereby controlling the shapes of the first lens and the second lens, which is helpful for the process forming of the fourth lens and the fifth lens; at the same time, it is also helpful to control the deflection direction of light, intercept the excess light in the outer field of view, can improve the imaging quality of the lens, and effectively control the stray light risk of the lens.

[0080] A third aspect of the present application provides such an optical photographic lens, including a lens barrel having an accommodation space, and a first component, a second component, and at least one spacer element accommodated in the lens barrel. The first component may include a first lens E1, a second lens E2, and a third lens E3 arranged in sequence from the object side to the image side along the optical axis. The second component may include a fourth lens E4, a fifth lens E5, and a sixth lens E6 arranged in sequence from the object side to the image side along the optical axis. An air gap may be provided between any two adjacent lenses among the first lens E1 to the sixth lens E6.

[0081] In an exemplary embodiment, the first component is fixed along the optical axis. The optical photographic lens further includes a driving component, and the driving component can drive the second component to move along the optical axis so as to generate a relative displacement between the first component and the second component.

[0082] In an exemplary embodiment, the optical photographic lens may further include a prism G having a folding-back function, which may be located on the object side of the first component. The prism G may have at least one aspherical surface. Exemplarily, the prism G may have a first surface S1 and a second surface S2, and both the first surface S1 and the second surface S2 are aspherical surfaces.

[0083] In an exemplary embodiment, the first lens E1 may have a positive optical power. The second lens E2 may have a negative optical power. The third lens E3 may have a negative optical power. The fourth lens E4 may have a positive optical power. The fifth lens E5 may have a positive optical power. The sixth lens E6 may have a positive optical power.

[0084] In an exemplary embodiment, at least one spacer element may include any one or more of the following spacer elements: a first spacer element P1 located between the first lens and the second lens and in direct contact with the image side of the first lens, a second spacer element P2 located between the second lens and the third lens and in direct contact with the image side of the second lens, a fourth spacer element P4 located between the fourth lens and the fifth lens and in direct contact with the image side of the fourth lens, a fifth spacer element P5 located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth lens, and so on.

[0085] In an exemplary embodiment, the lens barrel is a split lens barrel, which includes a first sub-lens barrel and a second sub-lens barrel.

[0086] For the optical photographic lens according to an exemplary embodiment of the present application, the inner diameter d0m of the surface of the first sub-lens barrel closest to the imaging surface, the inner diameter d10s of the surface of the second sub-lens barrel closest to the object side, the radius of curvature R6 of the image side of the third lens, and the radius of curvature R7 of the object side of the fourth lens satisfy: 1.1 < d0m / R6 < 1.3; 0.8 < d10s / R7 < 1.0. Satisfying these two conditional expressions is beneficial to improving the uniformity of the inner diameter step structure of the lens barrel and enhancing the assembly stability of the lens. At the same time, the shapes of the third lens and the fourth lens can be controlled, and the molding yield of the third lens and the fourth lens can be improved.

[0087] It should be understood that the present application does not specifically limit the number of spacer elements. Any number of spacer elements may be included between any two lenses, and any number of spacer elements may also be included in the entire optical photographic lens. The spacer elements help the optical photographic lens intercept redundant refracted and reflected light paths, reducing the generation of stray light and ghost images. Adding auxiliary supports between the spacer elements and the lens barrel is beneficial to improving problems such as poor assembly stability and low performance yield caused by large step differences between lenses.

[0088] In some embodiments, the optical photographic lens according to the present application may further include a filter and / or a protective glass disposed between the sixth lens and the imaging surface, for filtering light rays with different wavelengths, correcting color deviation, and protecting the photosensitive element located on the imaging surface.

[0089] In some embodiments, the optical photographic lens according to the present application may further include a diaphragm STO disposed between the prism G and the first lens E1. The setting of the diaphragm is beneficial to effectively converging the light rays entering the optical photographic lens and reducing the aperture of the lens.

[0090] The optical photographic lens according to the above-described embodiment of the present application may employ six lenses having optical power and a prism having a folding function. By reasonably allocating the focal lengths, surface shapes, central thicknesses of the respective lenses, and the on-axis spacings between the respective lenses, etc., the incident light can be effectively converged, the overall optical length can be reduced, and the processability can be improved, making the optical photographic lens more conducive to production and processing.

[0091] In an embodiment of the present application, at least one of the mirror surfaces of each of the first lens to the sixth lens is an aspherical mirror surface. The characteristics of an aspherical lens are that the curvature continuously changes from the center of the lens to the periphery of the lens. Different from a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, it is possible to eliminate as much as possible the aberration that appears during imaging, thereby improving the imaging quality. Optionally, the object side and the image side of each of the first lens to the sixth lens are both aspherical mirror surfaces.

[0092] Embodiments 1 to 8 of the optical photographic lens applicable to the above-described exemplary embodiments will be further described below with reference to the accompanying drawings.

[0093] Example 1

[0094] The following refers to Figure 2 Describe the optical photographic lens according to Embodiment 1 of the present application.

[0095] As Figure 2 shown, the optical photographic lens includes a lens barrel and a first component, a second component, and at least one spacer element accommodated in the lens barrel.

[0096] In this embodiment, the first component includes a first lens E1, a second lens E2, and a third lens E3 sequentially arranged from the object side to the image side along the optical axis; the second component includes a fourth lens E4, a fifth lens E5, and a sixth lens E6 sequentially arranged from the object side to the image side along the optical axis.

[0097] In this embodiment, the optical photographic lens further includes a prism G having a folding function, which is located on the object side of the first component.

[0098] In this embodiment, the lens barrel is a split lens barrel, which includes a first sub-lens barrel P0 and a second sub-lens barrel P10, wherein the first lens E1, the second lens E2, and the third lens E3 can be accommodated in the first sub-lens barrel P0, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 are accommodated in the second sub-lens barrel P10.

[0099] In this embodiment, at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b, and a fifth secondary auxiliary spacer element P5e. The arrangement of the spacer elements can prevent stray light during the imaging process from entering the next lens, and at the same time enables the lens and the lens barrel to bear against each other better, enhancing the structural stability of the optical photography lens.

[0100] In this embodiment, the first surface S1 of the prism G is a convex surface, and the second surface S2 is a concave surface. The first lens E1 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The second lens E2 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The third lens E3 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The optical photography lens further includes a filter (not shown) disposed between the sixth lens E6 and the imaging surface S17. The filter has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from the object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0101] Table 1 shows the basic parameter table of the optical photography lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0102]

[0103] Table 1

[0104] In Embodiment 1, the first surface S1 and the second surface S2 of the prism, and the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are all aspherical surfaces. The surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0105]

[0106] where x is the sagitta, the distance from the vertex of the aspherical surface at the position where the height is h along the optical axis direction; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface.

[0107] The following Tables 2-1 and 2-2 give the higher-order term coefficients A4, A6, A8, A10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0108] Surface number A4 A6 A8 A10 A12 A14 A16 S1 -2.54E-01 -1.88E-02 -2.43E-03 -3.01E-04 -1.59E-04 5.66E-06 -2.25E-05 S2 5.01E-01 -1.31E-01 1.66E-01 -6.94E-02 1.36E-02 -1.17E-03 6.36E-05 S3 9.06E-01 -8.17E-02 -2.76E-04 9.09E-03 6.43E-04 -6.84E-05 2.04E-04 S4 5.00E-01 -2.26E-02 -6.09E-03 6.67E-03 1.80E-03 -1.69E-04 2.82E-04 S5 -1.49E+00 3.56E-01 -7.79E-02 6.70E-03 -1.20E-03 5.94E-04 -1.32E-04 S6 -1.27E+00 2.72E-01 -5.03E-02 2.65E-03 -2.44E-04 7.53E-05 -1.44E-05 S7 5.66E-01 -3.64E-02 5.63E-03 8.03E-04 -1.88E-04 3.32E-05 -1.14E-05 S8 6.78E-01 -7.98E-02 1.53E-02 -2.34E-03 2.66E-04 -6.42E-05 1.82E-05 S9 3.37E-01 6.95E-02 2.49E-03 2.32E-04 5.55E-03 2.27E-03 5.51E-04 S10 3.18E-01 5.55E-02 -1.80E-02 3.91E-03 4.60E-03 -7.96E-04 4.38E-05 S11 -1.88E+00 1.08E-01 2.83E-02 -1.72E-02 4.64E-03 -3.15E-03 3.34E-04 S12 -2.50E+00 3.36E-01 2.73E-02 -1.36E-02 2.78E-03 2.95E-03 -1.51E-03 S13 8.76E-01 4.43E-02 3.96E-02 -9.82E-03 7.14E-03 8.58E-03 4.43E-03 S14 1.88E+00 -2.51E-01 8.43E-02 -2.81E-02 1.01E-02 4.17E-03 3.87E-03

[0109] Table 2-1

[0110] Surface number A18 A20 A22 A24 A26 A28 A30 S1 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 6.75E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 7.41E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -9.89E-06 -1.32E-05 -6.36E-06 -2.19E-06 0.00E+00 0.00E+00 0.00E+00 S12 -1.70E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 7.81E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0111] Table 2-2

[0112] Figure 4A shows the axial chromatic aberration curve of the optical photographic lens of Embodiment 1, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 4B shows the astigmatism curve of the optical photographic lens of Embodiment 1, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C shows the distortion curve of the optical photographic lens of Embodiment 1, which represents the distortion magnitude values corresponding to different image heights. Figure 4D shows the lateral chromatic aberration curve of the optical photographic lens of Embodiment 1, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 4A to 4D it can be known that the optical photographic lens given in Embodiment 1 can achieve good imaging quality.

[0113] Example 2

[0114] The following refers to Figure 3 to describe the optical photographic lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted.

[0115] As Figure 3 shown, the optical photographic lens includes a lens barrel and a first component, a second component, and at least one spacer element accommodated in the lens barrel. The optical photographic lens further includes a prism G with a folding function, which is located on the object side of the first component. The at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b, and a fifth secondary auxiliary spacer element P5e.

[0116] The parameters such as the radii of curvature and central thicknesses of the first lens to the sixth lens of the optical photographic lens in this embodiment are the same as those in Embodiment 1, as well as the distances between the lenses and the coefficients of the higher-order terms, as shown in Table 1, Table 2-1, and Table 2-2. In addition, the number of spacer elements included in the optical photographic lens in this embodiment is the same as that in Embodiment 1. The difference lies only in the actual parameters of the lens barrel and each spacer element. For example, at least one of the parameters such as the lens barrel size, the thickness of the spacer element, the inner diameter of the spacer element, the outer diameter of the spacer element, the distance between the end face of the lens barrel and the spacer element, and the distance between the spacer elements is different. Or rather, the main structures for imaging are the same, while the auxiliary structures for imaging are different. Therefore, the imaging quality of the optical photographic lens in Embodiment 2 of this application is as Figures 4A to 4D shown.

[0117] Example 3

[0118] The following refers to Figure 5 describe the optical photographic lens according to Embodiment 3 of this application.

[0119] As Figure 5 shown, the optical photographic lens includes a lens barrel and a first component, a second component, and at least one spacer element accommodated in the lens barrel. The first component includes a first lens E1, a second lens E2, and a third lens E3 sequentially arranged along the optical axis from the object side to the image side; the second component includes a fourth lens E4, a fifth lens E5, and a sixth lens E6 sequentially arranged along the optical axis from the object side to the image side. In this embodiment, the optical photographic lens further includes a prism G with a folding function, which is located on the object side of the first component.

[0120] In this embodiment, the lens barrel is a split lens barrel, which includes a first sub-lens barrel P0 and a second sub-lens barrel P10. The first lens E1, the second lens E2, and the third lens E3 can be accommodated in the first sub-lens barrel P0, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 are accommodated in the second sub-lens barrel P10.

[0121] In this embodiment, at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b, and a fifth secondary auxiliary spacer element P5e.

[0122] In this embodiment, the first surface S1 of the prism G is a convex surface, and the second surface S2 is a concave surface. The first lens E1 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The second lens E2 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The third lens E3 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The optical photographic lens further includes a filter (not shown) disposed between the sixth lens E6 and the imaging surface S17. The filter has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from the object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0123] Table 3 shows the basic parameter table of the optical photographic lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0124]

[0125] Table 3

[0126] In Embodiment 3, the first surface S1 and the second surface S2 of the prism, and the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are all aspherical surfaces, and the surface profile x of each aspherical lens can be defined by the formula (1) given in the above Embodiment 1.

[0127] The following Tables 4-1 and 4-2 give the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 that can be used for the aspherical surfaces S1-S14 in Embodiment 3.

[0128]

[0129]

[0130] Table 4-1

[0131] Surface number A18 A20 A22 A24 A26 A28 A30 S1 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 1.31E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 -4.82E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 4.95E-06 -1.07E-05 -6.49E-06 -2.65E-06 0.00E+00 0.00E+00 0.00E+00 S12 -1.64E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 7.24E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0132] Table 4-2

[0133] Figure 7A Fig. shows the axial chromatic aberration curve of the optical photographic lens of Embodiment 3, which represents the deviation of the focusing points of light rays with different wavelengths after passing through the lens. Figure 7B Fig. Figure 7B shows the astigmatism curve of the optical photographic lens of Embodiment 3, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 7C Fig. Figure 7C shows the distortion curve of the optical photographic lens of Embodiment 3, which represents the distortion magnitude values corresponding to different image heights. Figure 7D Fig. Figure 7D shows the lateral chromatic aberration curve of the optical photographic lens of Embodiment 3, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 7A to 7D it can be seen that the optical photographic lens given in Embodiment 3 can achieve good imaging quality.

[0134] Example 4

[0135] The following refers to Figure 6 to describe the optical photographic lens according to Embodiment 4 of the present application.

[0136] As Figure 6 shown, the optical photographic lens includes a lens barrel and a first component, a second component and at least one spacer element accommodated in the lens barrel. The at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b and a fifth secondary auxiliary spacer element P5e. In this embodiment, the optical photographic lens further includes a prism G with a folding function, which is located on the object side of the first component.

[0137] The parameters such as the curvature radius and the central thickness of the first lens to the sixth lens of the optical photographic lens in this embodiment are the same as those in Embodiment 3, as well as the spacing distance between the lenses and the high-order term coefficients, as shown in Table 3, Table 4-1 and Table 4-2. In addition, the number of spacer elements included in the optical photographic lens in this embodiment is the same as that in Embodiment 3. The difference lies only in the actual parameters of the lens barrel and each spacer element. For example, at least one of the parameters such as the lens barrel size, the thickness of the spacer element, the inner diameter of the spacer element, the outer diameter of the spacer element, the spacing distance between the lens barrel end face and the spacer element, and the spacing distance between the spacer elements is different. Or rather, the main structures for imaging are the same, while the auxiliary structures for imaging are different. Therefore, the imaging quality of the optical photographic lens of Embodiment 4 of the present application is as Figures 7A to 7D shown.

[0138] Example 5

[0139] The following refers to Figure 8 to describe the optical photographic lens according to Embodiment 5 of the present application.

[0140] As Figure 8 shown, the optical photographic lens includes a lens barrel and a first component, a second component and at least one spacer element accommodated in the lens barrel. The first component includes a first lens E1, a second lens E2, and a third lens E3 sequentially arranged along the optical axis from the object side to the image side; the second component includes a fourth lens E4, a fifth lens E5, and a sixth lens E6 sequentially arranged along the optical axis from the object side to the image side. In this embodiment, the optical photographic lens further includes a prism G with a folding function, which is located on the object side of the first component.

[0141] In this embodiment, the lens barrel is a split lens barrel, which includes a first sub-lens barrel P0 and a second sub-lens barrel P10. The first lens E1, the second lens E2, and the third lens E3 can be accommodated in the first sub-lens barrel P0, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 are accommodated in the second sub-lens barrel P10.

[0142] In this embodiment, at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b, and a fifth secondary auxiliary spacer element P5e.

[0143] In this embodiment, the first surface S1 of the prism G is a convex surface, and the second surface S2 is a concave surface. The first lens E1 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The second lens E2 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The third lens E3 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The optical photographic lens further includes a filter (not shown) disposed between the sixth lens E6 and the imaging surface S17. The filter has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from the object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0144] Table 5 shows the basic parameter table of the optical photographic lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0145]

[0146] Table 5

[0147] In Embodiment 5, the first surface S1 and the second surface S2 of the prism, and the object side and the image side of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces. The surface profile x of each aspherical lens can be defined by the formula (1) given in Embodiment 1 above.

[0148] Table 6-1 and Table 6-2 below give the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 for each of the aspherical mirror surfaces S1 - S14 in Embodiment 5.

[0149]

[0150]

[0151] Table 6-1

[0152] Surface number A18 A20 A22 A24 A26 A28 A30 S1 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -1.65E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 4.98E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 -3.54E-06 1.22E-05 6.90E-06 2.54E-06 0.00E+00 0.00E+00 0.00E+00 S12 9.70E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 -6.97E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0153] Table 6-2

[0154] Figure 10A shows the axial chromatic aberration curve of the optical photographic lens of Embodiment 5, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical photographic lens of Embodiment 5, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C shows the distortion curve of the optical photographic lens of Embodiment 5, which represents the distortion magnitude values corresponding to different image heights. Figure 10D shows the lateral chromatic aberration curve of the optical photographic lens of Embodiment 5, which represents the deviation of different image heights on the imaging plane after light rays pass through the lens. According to Figures 10A to 10D it can be seen that the optical photographic lens given in Embodiment 5 can achieve good imaging quality.

[0155] Example 6

[0156] The following refers to Figure 9 to describe the optical photographic lens according to Embodiment 6 of the present application.

[0157] As Figure 9As shown, the optical photographic lens includes a lens barrel and a first component, a second component, and at least one spacer element accommodated in the lens barrel. The at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b, and a fifth secondary auxiliary spacer element P5e. In this embodiment, the optical photographic lens further includes a prism G having a folding function, which is located on the object side of the first component.

[0158] In this embodiment, the parameters such as the radius of curvature and the central thickness of the first lens to the sixth lens of the optical photographic lens in Embodiment 5, the distance between the lenses, and the high-order term coefficients are the same, as shown in Table 5, Table 6-1, and Table 6-2. In addition, the number of spacer elements included in the optical photographic lens in this embodiment is the same as that in Embodiment 5. The difference lies only in the actual parameters of the lens barrel and each spacer element. For example, at least one of the parameters such as the lens barrel size, the thickness of the spacer element, the inner diameter of the spacer element, the outer diameter of the spacer element, the distance between the end face of the lens barrel and the spacer element, and the distance between the spacer elements is different. Or rather, the main structures for imaging are the same, while the auxiliary structures for imaging are different. Therefore, the imaging quality of the optical photographic lens in Embodiment 6 of the present application is as Figures 10A to 10D shown.

[0159] Example 7

[0160] The following refers to Figure 11 describe the optical photographic lens according to Embodiment 7 of the present application.

[0161] As Figure 11 shown, the optical photographic lens includes a lens barrel and a first component, a second component, and at least one spacer element accommodated in the lens barrel. The first component includes a first lens E1, a second lens E2, and a third lens E3 arranged in sequence along the optical axis from the object side to the image side; the second component includes a fourth lens E4, a fifth lens E5, and a sixth lens E6 arranged in sequence along the optical axis from the object side to the image side. In this embodiment, the optical photographic lens further includes a prism G having a folding function, which is located on the object side of the first component.

[0162] In this embodiment, the lens barrel is a split lens barrel, which includes a first sub-lens barrel P0 and a second sub-lens barrel P10. The first lens E1, the second lens E2, and the third lens E3 can be accommodated in the first sub-lens barrel P0, and the fourth lens E4, the fifth lens E5, and the sixth lens E6 are accommodated in the second sub-lens barrel P10.

[0163] In this embodiment, at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b, and a fifth secondary auxiliary spacer element P5e.

[0164] In this embodiment, the first surface S1 of the prism G is convex, and the second surface S2 is concave. The first lens E1 has a positive optical power, its object side surface S3 is convex, and its image side surface S4 is convex. The second lens E2 has a positive optical power, its object side surface S5 is convex, and its image side surface S6 is concave. The third lens E3 has a positive optical power, its object side surface S7 is convex, and its image side surface S8 is concave. The fourth lens E4 has a positive optical power, its object side surface S9 is convex, and its image side surface S10 is concave. The fifth lens E5 has a positive optical power, its object side surface S11 is convex, and its image side surface S12 is concave. The sixth lens E6 has a negative optical power, its object side surface S13 is convex, and its image side surface S14 is concave. The optical photographic lens further includes a filter (not shown) disposed between the sixth lens E6 and the imaging surface S17. The filter has an object side surface S15 (not shown) and an image side surface S16 (not shown). Light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0165] Table 7 shows the basic parameter table of the optical photographic lens of Embodiment 7, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0166]

[0167]

[0168] Table 7

[0169] In Embodiment 7, the first surface S1 and the second surface S2 of the prism, and the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are all aspherical surfaces. The surface profile x of each aspherical lens can be defined by the formula (1) given in Embodiment 1 above.

[0170] The following Tables 8-1 and 8-2 give the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 for the aspherical mirror surfaces S1-S14 in Embodiment 7.

[0171] Surface number A4 A6 A8 A10 A12 A14 A16 S1 -2.53E-01 -1.79E-02 -2.37E-03 -3.61E-04 -8.08E-05 -3.97E-05 -3.37E-06 S2 -7.82E-01 5.38E-02 -5.66E-03 -2.33E-03 -2.32E-04 -9.81E-05 2.76E-06 S3 -9.05E-01 7.94E-02 1.53E-03 -9.55E-03 -9.83E-04 -1.20E-04 -2.11E-04 S4 -4.99E-01 2.18E-02 5.21E-03 -7.27E-03 -1.69E-03 2.30E-04 -9.85E-05 S5 1.48E+00 -3.51E-01 7.59E-02 -5.75E-03 8.76E-04 -3.90E-04 6.30E-05 S6 1.24E+00 -2.67E-01 4.86E-02 -1.79E-03 -1.83E-04 1.19E-04 -9.63E-05 S7 -5.83E-01 4.21E-02 -6.53E-03 -7.93E-04 1.35E-04 5.64E-05 5.64E-06 S8 -6.78E-01 8.17E-02 -1.60E-02 2.06E-03 -2.01E-04 1.27E-04 -4.53E-05 S9 -3.44E-01 -6.76E-02 -2.03E-03 1.01E-03 -3.56E-03 -2.70E-03 -1.15E-03 S10 -3.25E-01 -5.13E-02 1.73E-02 -6.15E-03 -3.13E-03 -9.28E-05 -1.07E-03 S11 1.85E+00 -1.07E-01 -2.97E-02 1.71E-02 -4.09E-03 3.40E-03 -4.84E-04 S12 2.46E+00 -3.32E-01 -3.00E-02 1.64E-02 -3.65E-03 -2.88E-03 9.00E-04 S13 -8.82E-01 -4.90E-02 -3.90E-02 7.59E-03 -7.52E-03 -6.65E-03 -3.55E-03 S14 -1.88E+00 2.51E-01 -8.44E-02 2.52E-02 -9.73E-03 -2.17E-03 -2.76E-03

[0172] Table 8-1

[0173]

[0174]

[0175] Table 8-2

[0176] Figure 13A The axial chromatic aberration curve of the optical photographic lens of Example 7 is shown, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 13B The astigmatism curve of the optical photographic lens of Example 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 13C The distortion curve of the optical photographic lens of Example 7 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 13D The lateral chromatic aberration curve of the optical photographic lens of Example 7 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 13A to 13D it can be known that the optical photographic lens given in Example 7 can achieve good imaging quality.

[0177] Example 8

[0178] The following refers to Figure 12 to describe the optical photographic lens according to Embodiment 8 of the present application.

[0179] As Figure 12 shown, the optical photographic lens includes a lens barrel and a first component, a second component and at least one spacer element accommodated in the lens barrel. The at least one spacer element includes: a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a fourth spacer element P4, a fifth spacer element P5, a fifth auxiliary spacer element P5b and a fifth secondary auxiliary spacer element P5e. In this embodiment, the optical photographic lens further includes a prism G with a folding function, which is located on the object side of the first component.

[0180] The parameters such as the radius of curvature and the central thickness of the first lens to the sixth lens of the optical photographic lens in this embodiment are the same as those in Embodiment 7, as well as the spacing distances between the lenses and the higher-order term coefficients, as shown in Table 7, Table 8-1, and Table 8-2. In addition, the number of spacer elements included in the optical photographic lens in this embodiment is the same as that in Embodiment 7. The difference lies only in the actual parameters of the lens barrel and each spacer element. For example, at least one of the parameters such as the lens barrel size, the thickness of the spacer element, the inner diameter of the spacer element, the outer diameter of the spacer element, the spacing distance between the end face of the lens barrel and the spacer element, and the spacing distance between the spacer elements is different. Or rather, the main structures for imaging are the same, while the auxiliary structures for imaging are different. Therefore, the imaging quality of the optical photographic lens in Embodiment 8 of this application is as Figures 13A to 13D shown.

[0181] Table 9 below shows some parameters of the optical photographic lenses in Embodiments 1 to 8 above, such as the effective focal length and combined focal length of each lens, and the axial distance SAG52 between the intersection of the image side of the fifth lens and the optical axis and the effective radius vertex of the image side of the fifth lens. Among them, the units of each focal length value and distance are all millimeters (mm).

[0182]

[0183]

[0184] Table 9

[0185] Table 10 below shows some basic parameters of the lens barrels and spacer elements of the optical photographic lenses in Embodiments 1 to 8, such as d1m, d2s, d5em, D5em, d0m, d10s, d10m, CP2, CP2b, CP5b, CP5e, EP01, EP12, EP45, EP104, etc. The units of the basic parameters listed in Table 10 are all millimeters (mm).

[0186] Parameter value / Example 1 2 3 4 5 6 7 8 d1m 6.147 6.137 6.217 6.225 6.153 6.135 6.142 6.133 d2s 5.966 5.938 6.078 6.082 6.013 5.978 6.009 5.981 d5em 8.633 8.633 8.672 8.672 8.628 8.628 8.615 8.615 D5em 10.131 10.231 10.760 10.960 10.440 10.240 10.340 10.640 d0m 9.243 9.347 9.483 9.183 9.390 9.190 9.290 9.090 d10s 7.994 7.994 8.352 8.622 8.062 8.165 8.062 8.353 d10m 10.604 11.000 11.282 11.482 10.953 10.753 11.076 11.153 CP2 0.033 0.030 0.024 0.030 0.030 0.037 0.024 0.033 CP5 0.030 0.037 0.030 0.033 0.024 0.024 0.024 0.033 CP2b 1.243 1.188 1.321 1.315 1.297 1.220 1.303 1.224 CP5b 1.075 1.138 0.922 0.943 0.944 0.912 0.944 0.985 CP5e 0.030 0.041 0.030 0.030 0.030 0.037 0.028 0.033 EP01 1.284 1.294 1.359 1.350 1.414 4.434 1.421 1.503 EP12 0.695 0.725 0.660 0.654 0.661 0.684 0.649 0.627 EP45 2.244 2.057 2.202 2.185 2.169 2.162 2.150 2.138 EP104 1.131 0.979 0.944 1.014 0.916 0.944 0.916 1.067

[0187] Table 10 In summary, in Embodiments 1 to 8, the optical photographic lenses respectively meet the conditions in Table 11 below.

[0188]

[0189]

[0190] Table 11

[0191] Figures 14 to 16 Respectively show the stray light schematic diagrams of Sample 1, Sample 2, and Sample 3 of the optical photographic lens.

[0192] Figure 14 It shows a schematic diagram of stray light of Sample 1 of an optical photographic lens under the conditions of f4 / EP45 = 4.85 and f5 / EP45 = 14.8. Figure 15 It shows a schematic diagram of stray light of Sample 2 of an optical photographic lens under the conditions of f4 / EP45 = 6.2 and f5 / EP45 = 17.1. Figure 16 It shows a schematic diagram of stray light of Sample 3 of an optical photographic lens under the conditions of f4 / EP45 = 5.05 and f5 / EP45 = 15.05.

[0193] From Figures 14 to 16 it can be seen that when the optical photographic lens simultaneously satisfies the numerical ranges of 5.0 < f4 / EP45 ≤ 5.51 and 15.0 < f5 / EP45 < 16.5, the overall effect of eliminating stray light is better, while when exceeding the numerical range of one of the conditional expressions, stray light is likely to occur.

[0194] The following Table 12 shows the experimental comparison results of Sample 1, Sample 2, and Sample 3 of the optical photographic lens. Through Figures 14 to 16 the comparison, generally speaking, when the optical photographic lens simultaneously satisfies the numerical ranges of 5.0 < f4 / EP45 ≤ 5.51 and 15.0 < f5 / EP45 < 16.5, it can effectively control the number of reflections of stray light in the fifth lens structure region, weaken the influence of stray light on imaging, the stray light energy is low, and there is an obvious improvement in stray light, so that the optical photographic lens has a better effect of eliminating stray light and has better imaging quality. While when exceeding the numerical range of one of the conditional expressions, the stray light energy is high and the stray light is obvious, thus affecting the imaging quality.

[0195]

[0196] Table 12

[0197] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with (but not limited to) the technical features with similar functions disclosed in the present application.

Claims

1. An optical photographic lens, characterized in that: The invention comprises a lens barrel having a receiving space, and a first component, a second component and at least one spacer element received in the lens barrel. The first component includes a first lens, a second lens and a third lens arranged in sequence from the object side to the image side along the optical axis; The second assembly includes a fourth lens, a fifth lens and a sixth lens arranged in sequence from the object side to the image side along the optical axis; The at least one spacer element includes: a fourth spacer element located between the fourth lens and the fifth lens and in direct contact with the image side of the fourth lens, and a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth lens; Wherein, the number of lenses having optical power in the optical photography lens is six; The optical photographic lens further comprises a driving component, wherein the driving component drives the second component to move along the optical axis; The effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, and the interval EP45 between the fourth spacing element and the fifth spacing element satisfy: 5.0<f4 / EP45≤5.51; 15.0<f5 / EP45<16.

5.

2. The optical photographic lens according to claim 1, wherein: The at least one spacer element further includes a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens, and a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens, The effective focal length f1 of the first lens and the interval EP12 between the first spacing element and the second spacing element satisfy: 11.08≤f1 / EP12≤12.

86.

3. The optical photographic lens according to claim 1, wherein: A center thickness CT5 of the fifth lens on the optical axis and an interval EP45 between the fourth spacer element and the fifth spacer element satisfy: 1.1<EP45 / CT5≤1.

22.

4. The optical photographic lens according to claim 1, wherein: The at least one spacer element further comprises a fifth secondary auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the sixth lens, The curvature radius R11 of the object side surface of the sixth lens, the outer diameter D5em of the image side surface of the fifth slave auxiliary spacer element, and the inner diameter d5em of the image side surface of the fifth slave auxiliary spacer element satisfy: 6.99≤R11 / (D5em-d5em)≤10.

68.

5. The optical photographic lens according to claim 1, wherein: The lens barrel is a split lens barrel, which includes a first sub-lens barrel and a second sub-lens barrel. The inner diameter d10m of the surface of the second sub-lens barrel closest to the imaging surface, the curvature radius R12 of the image-side surface of the sixth lens, and the refractive index N6 of the sixth lens satisfy: 2.48≤R12*N6 / d10m<2.

75.

6. The optical photographic lens according to claim 1, wherein: An air gap T56 between the fifth lens and the sixth lens on the optical axis and a maximum thickness CP5 of the fifth spacing element satisfy: 0.8<T56 / CP5<1.

3.

7. The optical photographic lens according to claim 1, wherein: The at least one spacer element further includes a fifth auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the fifth spacer element, and a fifth secondary auxiliary spacer element located between the fifth lens and the sixth lens and in direct contact with the image side of the sixth lens, The maximum thickness CP5b of the fifth auxiliary spacer element, the maximum thickness CP5e of the fifth auxiliary spacer element, and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens satisfy: 0.35<(CP5b+CP5e) / |SAG52|<0.

6.

8. The optical photographic lens according to claim 1, wherein: The center thickness CT4 of the fourth lens on the optical axis, the air interval T45 between the fourth lens and the fifth lens on the optical axis, and the interval EP104 between the front end surface of the lens barrel and the fourth spacing element satisfy: 3.26≤(CT4+T45) / EP104<3.

9.

9. The optical photographic lens according to claim 1, wherein: The at least one spacer element further comprises a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens, A center thickness CT3 of the third lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a maximum thickness CP2 of the second spacer element satisfy: 2.6<CT3 / (CT2+CP2)<2.

9.

10. The optical photographic lens according to claim 9, characterized in that: The at least one spacer element further comprises a second auxiliary spacer element located between the second lens and the third lens and in direct contact with the image side of the second spacer element, An air gap T23 between the second lens and the third lens on the optical axis and a maximum thickness CP2b of the second auxiliary spacer element satisfy: 0.85<T23 / CP2b<1.

0.

11. The optical photographic lens according to claim 1, wherein: The at least one spacer element further comprises a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens, The interval EP01 between the surface of the lens barrel closest to the object side and the first spacing element and the center thickness CT1 of the first lens on the optical axis satisfy: 0.4<CT1 / EP01<1.

4.

12. The optical photographic lens according to claim 1, wherein: The at least one spacer element further includes a first spacer element located between the first lens and the second lens and in direct contact with the image side of the first lens, and a second spacer element located between the second lens and the third lens and in direct contact with the image side of the second lens, The inner diameter d1m of the image side surface of the first spacer element, the inner diameter d2s of the object side surface of the second spacer element, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -2.31≤d1m / R3≤-2.27; -2.0<d2s / R4<-1.

9.

13. The optical photographic lens according to claim 1, wherein: The lens barrel is a split lens barrel, which includes a first sub-lens barrel and a second sub-lens barrel. An inner diameter d0m of a surface on one side of the first sub-lens barrel closest to the imaging plane, an inner diameter d10s of a surface on one side of the second sub-lens barrel closest to the object side, a curvature radius R6 of the image side surface of the third lens, and a curvature radius R7 of the object side surface of the fourth lens satisfy: 1.16≤d1m / R3≤1.23; 0.8<d10s / R7<1.

0.

14. The optical photographic lens according to any one of claims 1 to 13, characterized in that: The optical photography lens also includes a prism with a folding function, and the prism is located on the object side of the first component; The prism has a first surface and a second surface, and both the first surface and the second surface are aspherical surfaces. The focal length Fg of the prism, the curvature radius RS1 of the first surface of the prism, and the curvature radius RS2 of the second surface of the prism satisfy: -5.79≤Fg / RS1≤-5.3; -11.0≤Fg / RS2<-10.

1.

15. The optical photographic lens according to claim 1, wherein: The first lens has positive refractive power, and its object side surface is convex, and its image side surface is convex; The second lens has negative optical power, its object side surface is concave, and its image side surface is convex; The third lens has negative optical power, its object side surface is convex, and its image side surface is concave; The fourth lens has positive refractive power, and its object side surface is convex, and its image side surface is convex; The fifth lens has positive refractive power, its object side surface is concave, and its image side surface is convex; and The sixth lens has positive refractive power, an object-side surface thereof is convex, and an image-side surface thereof is concave.

Images