Optical imaging lens

Abstract

The application discloses an optical imaging lens, comprising a lens barrel, a lens set and a plurality of spacers arranged in the lens barrel, wherein the lens set comprises, in sequence from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; the plurality of spacers comprises a fourth spacer arranged between the fourth lens and the fifth lens and in contact with the image side surface of the fourth lens, and a fifth spacer arranged between the fifth lens and the sixth lens and in contact with the image side surface of the fifth lens; the maximum height L of the lens barrel along the optical axis direction and the effective focal length f of the optical imaging lens satisfy L / f<0.8; the effective focal length f5 of the fifth lens, the refractive index N5 of the fifth lens and the interval distance EP45 of the fourth spacer and the fifth spacer along the optical axis direction satisfy f5*N5 / EP45>85.0.

Description

Technical Field

[0001] This application relates to the field of optical components, and more specifically, to an optical imaging lens. Background Technology

[0002] With the rapid development of the mobile phone industry, consumers are placing increasingly higher demands on mobile phone photography performance. To meet consumers' needs for shooting distant objects, current mobile phones are generally equipped with a telephoto lens for long-range shooting. At the same time, because the field of view of a telephoto lens is much smaller than that of a wide-angle lens, it can better focus on local details, a feature that can also be used to improve composition and portrait photography. While telephoto lenses have many advantages, they also suffer from image quality loss. Telephoto lenses have a compact lens arrangement near the object side and a more dispersed lens arrangement near the image side; however, the distance between the fourth and fifth lenses is usually relatively large, and fluctuations in this dimension have a significant impact on lens performance. Furthermore, the relatively large thickness of the spacer between the fourth and fifth lenses also affects the stability of the lens assembly. Therefore, designing an optical imaging lens that can achieve both long-range telephoto capabilities and high image quality has always been a research direction for those skilled in the art. Summary of the Invention

[0003] The first aspect of this application provides an optical imaging lens comprising: a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel, wherein the lens group comprises, in sequence from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the plurality of spacers comprises: a fourth spacer disposed between the fourth and fifth lenses and in contact with the image-side surface of the fourth lens; and a fifth spacer disposed between the fifth and sixth lenses and in contact with the image-side surface of the fifth lens; the maximum height L of the lens barrel along the optical axis and the effective focal length f of the optical imaging lens satisfy: L / f < 0.8; the effective focal length f5 of the fifth lens, the refractive index N5 of the fifth lens, and the spacing EP45 between the fourth and fifth spacers along the optical axis satisfy: f5 × N5 / EP45 > 85.0.

[0004] The second aspect of this application provides an optical imaging lens comprising: a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel, wherein the lens group comprises, in sequence from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the plurality of spacers comprises: a third spacer disposed between the third lens and the fourth lens and in contact with the image-side surface of the third lens; a fourth spacer disposed between the fourth lens and the fifth lens and in contact with the image-side surface of the fourth lens; and a fifth spacer disposed between the fifth lens and the sixth lens and in contact with the image-side surface of the fifth lens; wherein the spacing EP34 between the third spacer and the fourth spacer along the optical axis, the center thickness CT5 of the fifth lens along the optical axis, the center thickness CT6 of the sixth lens along the optical axis, and the maximum thickness CP5 of the fifth spacer along the optical axis satisfy: 2.0 < EP34 / CT5 + CT6 / CP5 < 3.0.

[0005] A third aspect of this application provides an optical imaging lens comprising: a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel, wherein the lens group comprises, in sequence from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the plurality of spacers comprises: a second spacer disposed between the second and third lenses and in contact with the image side of the second lens; a fourth spacer disposed between the fourth and fifth lenses and in contact with the image side of the fourth lens; and a fifth spacer disposed between the fifth and sixth lenses and in contact with the image side of the fifth lens; wherein the combined focal length f12 of the first and second lenses and the inner diameter d2s of the object side of the second spacer satisfy: 2.5 < f12 / d2s < 4.0.

[0006] The fourth aspect of this application provides an optical imaging lens comprising: a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel, wherein the lens group comprises, in sequence from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the plurality of spacers comprises: a fourth spacer disposed between the fourth lens and the fifth lens and in contact with the image side of the fourth lens; and a fifth spacer disposed between the fifth lens and the sixth lens and in contact with the image side of the fifth lens; wherein the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the outer diameter D5m of the image side of the fifth spacer, and the maximum effective radius DT61 of the object side of the sixth lens satisfy: 2.0 < R12 / R11 < 6.0 and -0.1 < (D5m - DT61) / f6 ≤ 0.

[0007] In one embodiment, the maximum thickness CP4 of the fourth spacer along the optical axis, the maximum thickness CP5 of the fifth spacer along the optical axis, the air gap T45 between the fourth and fifth lenses on the optical axis, and the air gap T56 between the fifth and sixth lenses on the optical axis satisfy: 1.0 < CP5 / T56 + CP4 / T45 < 1.5.

[0008] In one embodiment, the effective focal length f4 of the fourth lens and the inner diameter d4s of the object side of the fourth spacer satisfy: -80.0 < f4 / d4s < -50.0.

[0009] In one embodiment, the plurality of spacers further includes: a second spacer disposed between the second lens and the third lens and in contact with the image-side surface of the second lens; and a third spacer disposed between the third lens and the fourth lens and in contact with the image-side surface of the third lens; wherein the spacing distance EP23 between the second spacer and the third spacer along the optical axis, the spacing distance EP34 between the third spacer and the fourth spacer along the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: 1.5 < (EP23 + EP34) / T34 < 2.0.

[0010] In one embodiment, the plurality of spacers further includes: a first spacer disposed between the first lens and the second lens and in contact with the image-side surface of the first lens; and a second spacer disposed between the second lens and the third lens and in contact with the image-side surface of the second lens; wherein the air gap T12 between the first lens and the second lens on the optical axis, the air gap T23 between the second lens and the third lens on the optical axis, the maximum thickness CP1 of the first spacer along the optical axis, and the maximum thickness CP2 of the second spacer along the optical axis satisfy: 2.5 < (T23 + CP2) / (T12 + CP1) < 6.0.

[0011] In one embodiment, the plurality of spacers further includes a third spacer disposed between the third lens and the fourth lens and in contact with the image side of the third lens; the combined focal length f23 of the second lens and the third lens and the inner diameter d3s of the object side of the third spacer satisfy: -4.5 < f23 / d3s < -3.0.

[0012] In one embodiment, the refractive indices of the fourth lens and the fifth lens are both greater than 1.68, and the combined focal length f45 of the fourth lens and the fifth lens and the inner diameter d5s of the object side of the fifth spacer satisfy: 9.0 < f45 / d5s < 11.0.

[0013] In one embodiment, the plurality of spacers further includes: a first spacer disposed between the first lens and the second lens and in contact with the image-side surface of the first lens; and a second spacer disposed between the second lens and the third lens and in contact with the image-side surface of the second lens; wherein the distance EP01 between the object-side end face of the lens barrel and the object-side surface of the first spacer along the optical axis, the distance EP12 between the first spacer and the second spacer along the optical axis, and the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 0.0 < EP01 / f1 + EP12 / f2 < 0.5.

[0014] In one embodiment, the plurality of spacers further includes a third spacer disposed between the third lens and the fourth lens and in contact with the image-side surface of the third lens; the outer diameter D3s of the object-side surface of the third spacer, the inner diameter d3s of the object-side surface of the third spacer, the maximum effective radius DT32 of the image-side surface of the third lens, and the radius of curvature R6 of the image-side surface of the third lens satisfy: 0.5 < (D3s - d3s + DT32) / R6 < 1.0.

[0015] The optical imaging lens provided in this application satisfies L / f < 0.8 and f5×N5 / EP45 > 85.0. By reasonably controlling the ratio of the maximum height of the lens barrel to the focal length of the lens, the focal length of the optical imaging lens can be guaranteed to be within the telephoto range. In order to obtain a longer focal length, the lens length needs to be larger. The lens position distribution of telephoto lenses is usually that the lenses near the object side are arranged compactly, while the lenses near the image side are arranged dispersedly. This results in a large distance between the fourth and fifth lenses. The fluctuation of this dimension has a significant impact on the lens performance. Furthermore, since the thickness of the spacer between the fourth and fifth lenses is large, it will also affect the stability of the lens assembly. In addition, this application controls the relationship between the refractive index of the fifth lens, the focal length, and the spacing distance between the fourth and fifth spacers along the optical axis to keep the distance between the fourth and fifth lenses within a reasonable range. This avoids assembly stability and imaging quality problems caused by the large distance between the fourth and fifth lenses, and helps to improve the accuracy and assembly stability of the fourth and fifth spacers, thereby improving the image quality of the captured image. Attached Figure Description

[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 A structural layout diagram and schematic diagram of some parameters of an optical imaging lens according to this application are shown;

[0018] Figure 2A and Figure 2B The defocus curve and photographs of a six-element lens in the prior art are shown respectively.

[0019] Figure 2C and Figure 2D A defocus curve diagram and a photograph of an optical imaging lens according to this application are shown respectively;

[0020] Figure 3A A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0021] Figure 3B A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0022] Figure 4A to Figure 4E The on-axis chromatic aberration curve, astigmatism curve, distortion curve, magnification chromatic aberration curve, and defocus curve of the optical imaging lens according to Embodiment 1 and Embodiment 2 of this application are shown respectively.

[0023] Figure 5A A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0024] Figure 5B A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0025] Figure 6A to Figure 6E The on-axis chromatic aberration curve, astigmatism curve, distortion curve, magnification chromatic aberration curve, and defocus curve of the optical imaging lens according to Embodiments 3 and 4 of this application are shown respectively.

[0026] Figure 7A A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0027] Figure 7B A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown;

[0028] Figure 8A to Figure 8E The on-axis chromatic aberration curve, astigmatism curve, distortion curve, magnification chromatic aberration curve, and defocus curve of the optical imaging lens according to Embodiments 5 and 6 of this application are shown respectively.

[0029] Figure 9A A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown;

[0030] Figure 9B A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown; and

[0031] Figure 10A to Figure 10E The on-axis chromatic aberration curve, astigmatism curve, distortion curve, magnification chromatic aberration curve, and defocus curve of the optical imaging lens according to Embodiments 7 and 8 of this application are shown respectively. Detailed Implementation

[0032] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this 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.

[0033] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0034] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0035] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity 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 location of the concaveness 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 subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0036] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," 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. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0037] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. For example, the lens group, lens barrel, and spacer in the various embodiments of this application can be arbitrarily combined, and it is not limited to the lens group in one embodiment being combined only with the lens barrel, spacer, etc. of that embodiment.

[0039] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Figure 1 This diagram illustrates the structural layout and schematic diagram of some parameters of an optical imaging lens according to this application. Those skilled in the art will understand that some lens parameters commonly used in the art, such as the center thickness CT5 of the fifth lens on the optical axis, are not shown. Figure 1 As shown in the figure, Figure 1 The following are merely illustrative examples of partial parameters of the lens barrel and spacer of an optical imaging lens according to this application, to facilitate a better understanding of the invention. Figure 1 As shown, L represents the maximum height of the lens barrel along the optical axis, EP01 represents the distance between the object-side end face of the lens barrel and the object-side side face of the first spacer along the optical axis, EP12 represents the distance between the first spacer and the second spacer along the optical axis, EP23 represents the distance between the second spacer and the third spacer along the optical axis, EP34 represents the distance between the third spacer and the fourth spacer along the optical axis, EP45 represents the distance between the fourth spacer and the fifth spacer along the optical axis, CP1 represents the maximum thickness of the first spacer along the optical axis, and C... P2 represents the maximum thickness of the second spacer along the optical axis, CP3 represents the maximum thickness of the third spacer along the optical axis, CP4 represents the maximum thickness of the fourth spacer along the optical axis, CP5 represents the maximum thickness of the fifth spacer along the optical axis, d2s represents the inner diameter of the object side of the second spacer, d3s represents the inner diameter of the object side of the third spacer, d4s represents the inner diameter of the object side of the fourth spacer, d5s represents the inner diameter of the object side of the fifth spacer, D3s represents the outer diameter of the object side of the third spacer, and D5m represents the outer diameter of the image side of the fifth spacer.

[0040] An optical imaging lens according to an exemplary embodiment of this application includes a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel. The lens group includes, in sequence along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein any two adjacent lenses among the first lens to the sixth lens may have a spacer distance between them.

[0041] In an exemplary embodiment, the plurality of spacers may include at least one of a first spacer, a second spacer, a third spacer, a fourth spacer, and a fifth spacer, wherein the first spacer is disposed between the first lens and the second lens and contacts the image-side surface of the first lens; the second spacer is disposed between the second lens and the third lens and contacts the image-side surface of the second lens; the third spacer is disposed between the third lens and the fourth lens and contacts the image-side surface of the third lens; the fourth spacer is disposed between the fourth lens and the fifth lens and contacts the image-side surface of the fourth lens; and the fifth spacer is disposed between the fifth lens and the sixth lens and contacts the image-side surface of the fifth lens.

[0042] In an exemplary embodiment, the plurality of spacers may further include a first auxiliary spacer disposed between the first spacer and the second lens and in contact with the image-side surface of the first spacer.

[0043] In an exemplary embodiment, the plurality of spacers may further include a fourth auxiliary spacer disposed between the fourth spacer and the fifth lens and in contact with the image-side surface of the fourth spacer.

[0044] In an exemplary embodiment, the plurality of spacers may further include a fifth auxiliary spacer disposed between the fifth spacer and the sixth lens and in contact with the image-side surface of the fifth spacer.

[0045] It should be understood that this application does not specifically limit the number of spacers; any number of spacers may be included between any two lenses, and the entire optical imaging lens may also include any number of spacers. Spacers help the optical imaging lens intercept excess reflective light paths, reducing stray light and ghosting. Adding auxiliary support between spacers and the lens barrel helps improve problems such as poor assembly stability and low performance yield caused by large step differences between lenses.

[0046] In an exemplary embodiment, the optical imaging lens according to this application satisfies: L / f < 0.8, where L is the maximum height of the lens barrel along the optical axis, and f is the effective focal length of the optical imaging lens. Satisfying L / f < 0.8 indicates that the focal length of the optical imaging lens is within the telephoto range. From the equation L / f < 0.8, it can be concluded that a longer lens length is required to obtain a longer focal length.

[0047] In an exemplary embodiment, the optical imaging lens according to this application satisfies: f5×N5 / EP45>85.0, where f5 is the effective focal length of the fifth lens, N5 is the refractive index of the fifth lens, and EP45 is the distance between the fourth and fifth spacers along the optical axis. Satisfying the condition f5×N5 / EP45>85.0 allows the distance between the fourth and fifth lenses to be controlled within a reasonable range, which helps improve the accuracy and assembly stability of the spacers, thereby improving the image quality.

[0048] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 2.0 < EP34 / CT5 + CT6 / CP5 < 3.0, where EP34 is the distance between the third and fourth spacers along the optical axis, CT5 is the center thickness of the fifth lens along the optical axis, CT6 is the center thickness of the sixth lens along the optical axis, and CP5 is the maximum thickness of the fifth spacer along the optical axis. The larger the distance EP34 between the image-side of the third spacer and the object-side of the fourth spacer along the optical axis, the worse the lens assembly stability. Therefore, by controlling this distance, the requirements for lens assembly stability can be met. By controlling this conditional expression, the thickness, imaging quality, and distance between the fourth and fifth lenses can be better controlled, reducing the lens sensitivity at this position and its impact on the overall imaging quality of the optical imaging lens, while simultaneously improving the assembly stability of the portion of the optical imaging lens near the imaging surface.

[0049] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 2.5 < f12 / d2s < 4.0, where f12 is the combined focal length of the first lens and the second lens, and d2s is the inner diameter of the object-side surface of the second spacer. The function of the first lens and the second lens is to guide light from the external environment into the lens system. After passing through the first lens and the second lens, the light will diverge. By controlling the combined focal length of the first lens and the second lens and the inner diameter of the second spacer, the amount of light entering the optical bearing portion can be reduced, thereby reducing stray light generation and improving image quality.

[0050] In an exemplary embodiment, the optical imaging lens according to this application satisfies the following conditions: 2.0 < R12 / R11 < 6.0 and -0.1 < (D5m - DT61) / f6 ≤ 0, where R11 is the radius of curvature of the object-side surface of the sixth lens, R12 is the radius of curvature of the image-side surface of the sixth lens, D5m is the outer diameter of the image-side surface of the fifth spacer, and DT61 is the maximum effective radius of the object-side surface of the sixth lens. By controlling the condition -0.1 < (D5m - DT61) / f6 ≤ 0, it helps to control the dispersion of light transmitted to the sixth lens; by controlling the condition 2.0 < R12 / R11 < 6.0, adjusting the curvature of the object-side and image-side surfaces of the sixth lens helps to ensure the uniformity of light divergence from the sixth lens to the image plane, thereby improving the overall image quality.

[0051] An optical imaging lens according to an exemplary embodiment of this application includes a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel. The lens group, along the optical axis from the object side to the image side, sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The plurality of spacers may include a fourth spacer and a fifth spacer, wherein the fourth spacer is positioned between the fourth and fifth lenses and contacts the image-side surface of the fourth lens; the fifth spacer is positioned between the fifth and sixth lenses and contacts the image-side surface of the fifth lens. The optical imaging lens satisfies L / f < 0.8 and f5 × N5 / EP45 > 85.0, where L is the maximum height of the lens barrel along the optical axis, f is the effective focal length of the optical imaging lens, f5 is the effective focal length of the fifth lens, N5 is the refractive index of the fifth lens, and EP45 is the distance between the fourth and fifth spacers along the optical axis. This application satisfies L / f < 0.8 and f5×N5 / EP45 > 85.0. By reasonably controlling the ratio of the maximum height of the lens barrel to the focal length of the lens, the refractive index of the fifth lens, the focal length, and the relationship between the spacing between the fourth and fifth spacers along the optical axis, the focal length of the optical imaging lens can be determined to be within the telephoto range. In order to obtain a longer focal length, the lens length needs to be larger. By controlling the distance between the fourth and fifth lenses within a reasonable range, problems with assembly stability and imaging quality caused by a large distance between the fourth and fifth lenses can be avoided. This helps to improve the accuracy and assembly stability of the fourth and fifth spacers, thereby improving the image quality of the captured image.

[0052] The lens positions of existing six-element optical imaging lenses are usually arranged in a compact manner near the object side and a dispersed manner near the image side. The distance between the fourth and fifth lenses is usually large. The fluctuation of this size has a significant impact on the lens performance. Furthermore, the large thickness of the spacer between the fourth and fifth lenses also affects the stability of the lens assembly, thereby affecting the image quality.

[0053] The following is in conjunction with Example 1, Figure 2A to Figure 2D One of the main improvements of this application compared to the prior art is that the optical imaging lens of this application satisfies f5×N5 / EP45>85.0. By reasonably controlling the relationship between the refractive index and focal length of the fifth lens, and the spacing between the fourth and fifth spacers along the optical axis, the distance between the fourth and fifth lenses is controlled within a reasonable range. In contrast, the optical imaging lenses of the prior art do not satisfy the above conditions. For example, the prior art, taking the optical imaging lens of Embodiment 1 as an example, satisfies f5×N5 / EP45<85.0. Figure 2A This is a defocus curve diagram of the optical imaging lens of Embodiment 1 of this application when f5×N5 / EP45<85.0 (prior art). Figure 2CThis is a defocus curve diagram of the optical imaging lens of Embodiment 1 of this application when f5×N5 / EP45>85.0 (this application). The horizontal axis of the defocus curve diagram represents the focus shift (mm), and the vertical axis represents the OTF coefficient. Figure 2A It can be seen that, when the optical imaging lens of Embodiment 1 of this application satisfies f5×N5 / EP45<85.0 (existing technology), the peak positions of the defocus curve are relatively dispersed, indicating that the lens has a large focus shift and the imaging effect is blurry, as shown in the photographs. Figure 2B As shown. By Figure 2C As can be seen, when the optical imaging lens of Embodiment 1 of this application satisfies f5×N5 / EP45>85.0 (this application), the peak position of the defocus curve is relatively concentrated, indicating that the lens has good focus convergence. Moreover, the peak values ​​of all defocus characteristic curves are in the high value region, resulting in excellent image contrast and clear shooting effect. The captured photos are as follows: Figure 2D As shown.

[0054] An optical imaging lens according to an exemplary embodiment of this application includes a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel. The lens group, along the optical axis from the object side to the image side, sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The plurality of spacers may include a third spacer, a fourth spacer, and a fifth spacer, wherein the third spacer is positioned between the third and fourth lenses and contacts the image-side surface of the third lens; the fourth spacer is positioned between the fourth and fifth lenses and contacts the image-side surface of the fourth lens; and the fifth spacer is positioned between the fifth and sixth lenses and contacts the image-side surface of the fifth lens. The optical imaging lens satisfies 2.0 < EP34 / CT5 + CT6 / CP5 < 3.0, where EP34 is the spacing between the third and fourth spacers along the optical axis, CT5 is the center thickness of the fifth lens along the optical axis, CT6 is the center thickness of the sixth lens along the optical axis, and CP5 is the maximum thickness of the fifth spacer along the optical axis. The larger the distance EP34 between the image side of the third spacer and the object side of the fourth spacer along the optical axis, the worse the lens assembly stability. Therefore, by controlling this spacing distance, the requirements for lens assembly stability can be met. If 2.0 < EP34 / CT5 + CT6 / CP5 < 3.0, the thickness, imaging quality, and spacing distance of the fourth and fifth lenses can be better controlled, reducing the sensitivity of the lens at this position and its impact on the overall imaging quality of the optical imaging lens. At the same time, the assembly stability of the part of the optical imaging lens near the imaging surface can be improved.

[0055] An optical imaging lens according to an exemplary embodiment of this application includes a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel. The lens group, along the optical axis from the object side to the image side, sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The plurality of spacers may include a second spacer, a fourth spacer, and a fifth spacer, wherein the second spacer is positioned between the second and third lenses and contacts the image-side surface of the second lens; the fourth spacer is positioned between the fourth and fifth lenses and contacts the image-side surface of the fourth lens; and the fifth spacer is positioned between the fifth and sixth lenses and contacts the image-side surface of the fifth lens. The optical imaging lens satisfies 2.5 < f12 / d2s < 4.0, where f12 is the combined focal length of the first and second lenses, and d2s is the inner diameter of the object-side surface of the second spacer. The function of the first and second lenses is to guide light from the external environment into the lens system. After passing through the first and second lenses, the light will diverge. By controlling the combined focal length of the first and second lenses and the inner diameter of the second spacer, the amount of light entering the optical support can be reduced, thereby reducing stray light and improving image quality.

[0056] An optical imaging lens according to an exemplary embodiment of this application includes a lens barrel and a lens group and a plurality of spacers disposed within the lens barrel. The lens group, along the optical axis from the object side to the image side, sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The plurality of spacers may include a second spacer, a fourth spacer, and a fifth spacer, wherein the second spacer is positioned between the second and third lenses and contacts the image-side surface of the second lens; the fourth spacer is positioned between the fourth and fifth lenses and contacts the image-side surface of the fourth lens; and the fifth spacer is positioned between the fifth and sixth lenses and contacts the image-side surface of the fifth lens. The optical imaging lens satisfies 2.0 < R12 / R11 < 6.0 and -0.1 < (D5m - DT61) / f6 ≤ 0, where R11 is the radius of curvature of the object-side surface of the sixth lens, R12 is the radius of curvature of the image-side surface of the sixth lens, D5m is the outer diameter of the image-side surface of the fifth spacer, and DT61 is the maximum effective radius of the object-side surface of the sixth lens. By controlling the condition -0.1 < (D5m - DT61) / f6 ≤ 0, it helps to control the dispersion of light transmitted to the sixth lens; by controlling the condition 2.0 < R12 / R11 < 6.0, the curvature of the object side and image side of the sixth lens is adjusted, which helps to ensure the uniformity of light diverging from the sixth lens to the image plane and improve the overall image quality.

[0057] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 1.0 < CP5 / T56 + CP4 / T45 < 1.5, where CP4 is the maximum thickness of the fourth spacer along the optical axis, CP5 is the maximum thickness of the fifth spacer along the optical axis, T45 is the air gap between the fourth and fifth lenses on the optical axis, and T56 is the air gap between the fifth and sixth lenses on the optical axis. By satisfying 1.0 < CP5 / T56 + CP4 / T45 < 1.5, and controlling the ratio of the thickness of the fourth and fifth lenses to the air gaps between the fourth and fifth lenses and between the fifth and sixth lenses, the molding feasibility of the fourth and fifth lenses can be effectively improved. This ensures the overall thickness uniformity of the fourth, fifth, and sixth lenses, and enhances assembly stability and performance consistency.

[0058] In an exemplary embodiment, the optical imaging lens according to this application satisfies: -80.0 < f4 / d4s < -50.0, where f4 is the effective focal length of the fourth lens and d4s is the inner diameter of the object-side surface of the fourth spacer. Satisfying -80.0 < f4 / d4s < -50.0 helps to optimize the light leakage problem caused by the fourth lens. Controlling the effective focal length of the fourth lens can change the size of the aspherical outer diameter of the lens and the off-axis height of the light rays. Controlling the inner diameter of the fourth spacer can intercept the light leakage beam passing through the edge of the effective diameter of the fourth lens, reduce the risk of light leakage, and improve the lens imaging quality.

[0059] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 1.5 < (EP23 + EP34) / T34 < 2.0, where EP23 is the distance between the second and third spacers along the optical axis, EP34 is the distance between the third and fourth spacers along the optical axis, and T34 is the air gap between the third and fourth lenses on the optical axis. Satisfying 1.5 < (EP23 + EP34) / T34 < 2.0 facilitates the rational configuration of the on-axis spacing between the second, third, and fourth lenses, making the lens thickness and spacing more uniform, effectively reducing the thickness sensitivity of the lens, and correcting field curvature.

[0060] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 2.5 < (T23 + CP2) / (T12 + CP1) < 6.0, where T12 is the air gap between the first and second lenses on the optical axis, T23 is the air gap between the second and third lenses on the optical axis, CP1 is the maximum thickness of the first spacer along the optical axis, and CP2 is the maximum thickness of the second spacer along the optical axis. Satisfying 2.5 < (T23 + CP2) / (T12 + CP1) < 6.0 allows for control of the spacing between the first, second, and third lenses, thereby enabling reasonable allocation of optical power and improving the upper limit of the optical system's performance. Furthermore, this condition ensures the wall thickness of the first and second spacers, improving the uniformity of the spacers and the overall structural strength, and enhancing assembly stability.

[0061] In an exemplary embodiment, the optical imaging lens according to this application satisfies: -4.5 < f23 / d3s < -3.0, where f23 is the combined focal length of the second and third lenses, and d3s is the inner diameter of the object-side surface of the third spacer. The second lens is a convex-concave or concave-concave lens, and the third lens is a convex-concave lens. The purpose of this arrangement is to diverge the light converged by the first lens, satisfying -4.5 < f23 / d3s < -3.0. By controlling the ratio of the combined focal length of the second and third lenses to the inner diameter of the third spacer, the principal parameters of the optical system, such as the relative illumination and aperture number, can be controlled to obtain the desired imaging effect.

[0062] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 9.0 < f45 / d5s < 11.0, where f45 is the combined focal length of the fourth and fifth lenses, and d5s is the inner diameter of the object-side surface of the fifth spacer. Satisfying 9.0 < f45 / d5s < 11.0, by selecting this combination of material properties, helps to change the refraction and scattering of light when passing through the fourth and fifth lenses, thereby reducing system spherical aberration and improving image quality.

[0063] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 0.0 < EP01 / f1 + EP12 / f2 < 0.5, where EP01 is the distance between the object-side end face of the lens barrel and the object-side side face of the first spacer along the optical axis, EP12 is the distance between the first spacer and the second spacer along the optical axis, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. The first lens is responsible for converging the ambient light beam, and the second lens is responsible for diverging the converged light beam. By satisfying 0.0 < EP01 / f1 + EP12 / f2 < 0.5, the ability of the optical imaging lens to capture light can be controlled, which is beneficial for obtaining higher image quality in low-light environments.

[0064] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 0.5 < (D3s - d3s + DT32) / R6 < 1.0, where D3s is the outer diameter of the object-side surface of the third spacer, d3s is the inner diameter of the object-side surface of the third spacer, DT32 is the maximum effective radius of the image-side surface of the third lens, and R6 is the radius of curvature of the image-side surface of the third lens. The third lens functions to diverge light. By satisfying 0.5 < (D3s - d3s + DT32) / R6 < 1.0, the degree of light divergence can be controlled, which helps the light to be transmitted more evenly to the fourth lens. Furthermore, by controlling the inner and outer diameters of the third spacer, the outer diameter of the fourth lens can be controlled, reducing the step length between lenses, improving the feasibility of lens forming and assembly stability.

[0065] In an exemplary embodiment, the first lens may have positive optical power, the second lens may have negative optical power, the third lens may have negative optical power, the fourth lens may have negative optical power, the fifth lens may have positive optical power, and the sixth lens may have negative optical power.

[0066] In embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, the object-side surface and image-side surface of all lenses from the first to the sixth lens are aspherical mirror surfaces.

[0067] In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0068] The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the six lenses mentioned above. By rationally allocating the optical power, surface shape, and arrangement of the spacers of each lens, the range of each lens-tube engagement is made more uniform, enhancing the light-gathering ability and improving the imaging quality of the ultra-thin, large-image-plane, and miniaturized optical imaging lens. However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solutions claimed in this application to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiments, the optical imaging lens is not limited to including six lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0069] Specific embodiments of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings. Specifically, refer to... Figure 3A to Figure 4E Description of optical imaging lenses according to embodiments 1 and 2 of this application; see reference Figure 5A to Figure 6E Description of optical imaging lenses according to embodiments 3 and 4 of this application; see reference Figure 7A to Figure 8E Description of optical imaging lenses according to embodiments 5 and 6 of this application; see reference Figure 9A to Figure 10E The optical imaging lens according to embodiments 7 and 8 of this application is described.

[0070] Example 1

[0071] Figure 3A A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown. Figure 3A As shown, the optical imaging lens of Embodiment 1 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers.

[0072] like Figure 3A As shown, the lens group of the optical imaging lens in Embodiment 1, from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The sixth lens E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged onto the imaging surface (not shown).

[0073] Table 1 shows the basic parameters of the lens group of the optical imaging lens of Example 1, where the units for radius of curvature, thickness and effective focal length are millimeters (mm).

[0074]

[0075] Table 1

[0076] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0077]

[0078] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., 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 i-th order correction coefficient of the aspherical surface. Tables 2-1 and 2-2 give the higher-order coefficients A4, A6, A8, A1, A2, A3, A4, A5, A6, A8, A1 ... 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0079]

[0080]

[0081] Table 2-1

[0082] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -8.3289E-05 -1.3434E-05 -1.2355E-05 6.3419E-07 -3.8908E-06 -1.0498E-06 -4.8989E-06 S2 1.6669E-04 -7.7967E-05 3.5350E-05 -1.7973E-05 9.3232E-06 -2.8601E-06 2.2205E-07 S3 8.8991E-05 -4.6906E-05 1.5928E-05 -7.4682E-06 2.8475E-06 -1.1653E-06 -8.2475E-07 S4 -4.1014E-06 -5.2227E-06 1.4051E-06 -2.0624E-06 9.1103E-07 1.4083E-08 0.0000E+00 S5 -4.7434E-06 4.5731E-06 -4.7045E-06 1.4584E-06 -3.5838E-06 3.4391E-06 -1.0424E-06 S6 3.1189E-06 1.3374E-06 4.5056E-07 -9.9766E-07 1.5832E-06 -1.5758E-06 0.0000E+00 S7 -9.1431E-08 7.3530E-06 -1.7478E-06 2.7048E-06 -2.3286E-06 1.0928E-06 -1.1243E-06 S8 2.0283E-06 -6.1987E-06 -3.7096E-06 -3.2108E-06 -5.5249E-08 1.1728E-06 1.1278E-06 S9 -9.2390E-04 -6.0105E-05 2.4044E-04 -3.9642E-05 -1.6818E-04 -1.3000E-04 -4.8324E-05 S10 -3.9510E-04 9.4417E-04 1.1755E-03 4.1346E-04 1.3690E-06 -6.7446E-05 -2.4513E-05 S11 7.8532E-04 -4.5700E-04 5.2266E-04 2.3044E-04 -1.2321E-05 5.8025E-05 7.9824E-05 S12 3.2574E-04 2.5505E-04 1.3844E-04 1.9105E-05 -1.8343E-05 -1.4278E-05 1.0632E-06

[0083] Table 2-2

[0084] Table 3 shows the values ​​of the effective focal length f of the optical imaging lens in this embodiment, the maximum effective radius DT32 of the image side of the third lens, and the maximum effective radius DT61 of the object side of the sixth lens.

[0085] Parameter f (mm) DT32 (mm) DT61 (mm) Value 7.25 1.11 2.47

[0086] Table 3

[0087] like Figure 3AAs shown, the optical imaging lens of Embodiment 1 further includes seven spacers: a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer; the fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens; the fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 4 shows the basic parameters of the spacer of the optical imaging lens in Embodiment 1. The unit of each parameter in Table 4 is millimeters (mm). The aforementioned spacer can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0088] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.018 0.018 0.496 0.463 0.914 0.784 0.410 0.410 0.356 1.662 Parameter d3s D3s d4s d5s D5m L Value 1.184 2.700 1.316 2.128 2.901 5.299

[0089] Table 4

[0090] Example 2

[0091] Figure 3B A schematic diagram of the optical imaging lens according to Embodiment 2 of this application is shown. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments.

[0092] like Figure 3B As shown, the optical imaging lens of Embodiment 2 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers. The lens groups of the optical imaging lens of Embodiment 2 are exactly the same as those of the optical imaging lens of Embodiment 1, and their basic parameters are detailed in Tables 1 to 3, and will not be repeated here.

[0093] like Figure 3BAs shown, the optical imaging lens of Embodiment 2 further includes seven spacers: a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer; the fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens; the fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 5 shows the basic parameters of the spacer of the optical imaging lens in Embodiment 2. All parameters in Table 5 are in millimeters (mm). The aforementioned spacer can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0094] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.024 0.018 0.490 0.495 1.178 0.667 0.456 0.410 0.352 1.416 Parameter d3s D3s d4s d5s D5m L Value 1.071 2.145 1.478 2.352 2.986 5.599

[0095] Table 5

[0096] Figure 4A The on-axis chromatic aberration curves of the optical imaging lenses of Embodiments 1 and 2 are shown, which represent the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curves of the optical imaging lenses of Embodiments 1 and 2 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curves of the optical imaging lenses of Embodiment 1 and Embodiment 2 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 4D The magnification chromatic aberration curves of the optical imaging lenses of Embodiments 1 and 2 are shown, which represent the deviation of different image heights on the imaging plane after light passes through the lens. Figure 4E The defocus curves of the optical imaging lenses of Embodiments 1 and 2 are shown, indicating the focus shift. According to... Figure 4A to Figure 4E It can be seen that the optical imaging lenses of Embodiment 1 and Embodiment 2 can achieve good imaging quality.

[0097] Example 3

[0098] Figure 5A A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown. Figure 5A As shown, the optical imaging lens of Embodiment 3 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers.

[0099] like Figure 5A As shown, the lens group of the optical imaging lens in Embodiment 3, from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The sixth lens E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged onto the imaging surface (not shown).

[0100] Table 6 shows the basic parameters of the lens group of the optical imaging lens in Example 3, where the units for radius of curvature, thickness, and effective focal length are millimeters (mm). Tables 7-1 and 7-2 give the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 3. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0101]

[0102] Table 6

[0103]

[0104]

[0105] Table 7-1

[0106] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -8.6966E-05 -1.2809E-05 -1.3867E-05 2.8743E-06 -1.7050E-06 3.1587E-06 -4.9736E-06 S2 1.5203E-04 -6.9058E-05 3.0754E-05 -1.6203E-05 8.0637E-06 -1.9564E-06 -1.6959E-07 S3 7.2022E-05 -3.9106E-05 1.1103E-05 -5.0485E-06 2.1362E-06 5.0055E-07 -1.2296E-06 S4 -4.4699E-06 -4.1861E-06 4.9587E-06 -1.0555E-06 1.7015E-06 -6.0872E-07 0.0000E+00 S5 -4.4650E-07 6.8519E-06 -3.6532E-06 7.5615E-07 -3.7775E-06 3.8961E-06 -1.0070E-06 S6 1.7764E-05 6.4820E-06 4.1478E-06 1.8530E-07 3.4358E-06 -6.1309E-07 0.0000E+00 S7 7.8368E-06 1.4953E-05 -9.1201E-07 5.9295E-06 -2.4344E-06 2.4103E-06 -1.6281E-06 S8 1.0654E-06 -1.0969E-05 -8.6028E-06 -6.5869E-06 -3.0699E-06 -6.4330E-07 -4.7829E-07 S9 -1.0955E-03 1.1344E-04 1.7366E-04 -1.6193E-04 -1.5175E-04 -5.8830E-05 -5.5665E-06 S10 -2.3143E-03 -2.8708E-04 5.6977E-05 -1.1600E-04 1.8558E-05 8.5168E-05 4.4711E-05 S11 7.8357E-04 -3.0125E-04 5.2266E-04 1.3725E-04 -5.3505E-05 5.7625E-05 1.8860E-05 S12 8.1223E-04 5.3303E-04 1.6498E-04 8.7042E-05 1.4181E-05 5.7744E-05 2.4738E-05

[0107] Table 7-2

[0108] Table 8 shows the values ​​of the effective focal length f of the optical imaging lens in this embodiment, the maximum effective radius DT32 of the image side of the third lens, and the maximum effective radius DT61 of the object side of the sixth lens.

[0109] Parameter f (mm) DT32 (mm) DT61 (mm) Value 7.25 1.10 2.49

[0110] Table 8

[0111] like Figure 5A As shown, the optical imaging lens of Embodiment 3 further includes eight spacers, namely, a first spacer P1, a first auxiliary spacer P1b, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the first auxiliary spacer P1b is positioned on the image side of the first spacer and at least partially contacts the image side of the first spacer. The second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; and the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer. The fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens. The fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 9 shows the basic parameters of the spacers in the optical imaging lens of Embodiment 3. All parameters in Table 9 are in millimeters (mm). The aforementioned spacers can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0112] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.018 0.018 0.496 0.495 0.914 0.806 0.350 0.447 0.316 1.346 Parameter d3s D3s d4s d5s D5m L Value 1.184 2.700 1.397 2.083 2.876 5.299

[0113] Table 9

[0114] Example 4

[0115] Figure 5B A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown. Figure 5B As shown, the optical imaging lens of Embodiment 4 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers. The lens group of the optical imaging lens of Embodiment 4 is exactly the same as that of the optical imaging lens of Embodiment 3, and its basic parameters are detailed in Tables 6 to 8, and will not be repeated here.

[0116] like Figure 5BAs shown, the optical imaging lens of Embodiment 4 further includes eight spacers, namely a first spacer P1, a first auxiliary spacer P1b, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the first auxiliary spacer P1b is positioned on the image side of the first spacer and at least partially contacts the image side of the first spacer. The second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; and the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer. The fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens. The fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 10 shows the basic parameters of the spacers in the optical imaging lens of Embodiment 4. All parameters in Table 10 are in millimeters (mm). The aforementioned spacers can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0117] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.024 0.018 0.506 0.489 1.187 0.769 0.388 0.437 0.316 1.282 Parameter d3s D3s d4s d5s D5m L Value 1.065 2.231 1.444 2.156 2.962 5.678

[0118] Table 10

[0119] Figure 6A The on-axis chromatic aberration curves of the optical imaging lenses of Embodiments 3 and 4 are shown, which represent the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curves of the optical imaging lenses of Embodiments 3 and 4 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curves of the optical imaging lenses of Embodiments 3 and 4 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 6D The magnification chromatic aberration curves of the optical imaging lenses of Embodiments 3 and 4 are shown, which represent the deviation of different image heights on the imaging plane after light passes through the lens. Figure 6E The defocus curves of the optical imaging lenses of Embodiments 3 and 4 are shown, indicating the focus shift. According to... Figure 6A to Figure 6E It can be seen that the optical imaging lenses of Embodiments 3 and 4 can achieve good imaging quality.

[0120] Example 5

[0121] Figure 7A A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.Figure 7A As shown, the optical imaging lens of Embodiment 5 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers.

[0122] like Figure 7A As shown, the lens group of the optical imaging lens in Embodiment 5, from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The sixth lens E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged onto the imaging surface (not shown).

[0123] Table 11 shows the basic parameters of the lens group of the optical imaging lens of Example 5, where the units for radius of curvature, thickness, and effective focal length are millimeters (mm). Tables 12-1 and 12-2 give the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 5. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0124]

[0125] Table 11

[0126] Face No. A4 A6 A8 A10 A12 A14 A16 S1 5.3304E-01 -6.2760E-02 9.1266E-04 -4.2743E-03 2.7974E-04 -2.5949E-04 1.8253E-06 S2 4.9340E-02 -8.2184E-03 -2.5488E-03 1.5867E-03 -1.2532E-03 5.7434E-04 -2.9384E-04 S3 1.6429E-01 1.7135E-02 -4.1594E-03 1.7575E-03 -1.4004E-03 2.7278E-04 -2.3419E-04 S4 1.3421E-01 2.1350E-02 -2.9907E-03 -2.2402E-04 -5.5850E-04 -9.1193E-05 -6.1227E-05 S5 1.1864E-01 1.2892E-02 -1.0292E-03 6.8624E-04 -5.1368E-06 3.7908E-05 1.0064E-05 S6 2.7732E-02 3.9170E-03 -1.0325E-03 2.1198E-04 -1.7630E-05 1.8643E-05 2.4788E-06 S7 -1.6965E-01 -5.9024E-03 -2.5138E-03 -4.1881E-04 7.3078E-06 6.9729E-06 3.3356E-05 S8 -2.3650E-01 8.7121E-03 1.2952E-03 1.8592E-03 8.0583E-04 2.6866E-04 7.0223E-05 S9 -7.8609E-01 1.1510E-01 4.3159E-02 -6.7148E-03 -3.3458E-03 7.1858E-04 5.4934E-04 S10 -7.0123E-01 1.9222E-01 2.9627E-02 -1.9023E-02 3.6897E-03 5.5125E-03 2.3878E-04 S11 -3.9871E-01 2.6918E-01 -7.6072E-02 -1.0457E-03 1.6786E-02 4.1483E-03 8.2895E-04 S12 -8.7878E-01 1.2502E-01 -1.6711E-03 5.3782E-03 -1.9763E-03 -1.6936E-03 -1.2130E-03

[0127] Table 12-1

[0128] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -6.1350E-05 -8.4271E-06 -1.2499E-05 -8.8503E-07 -3.2198E-06 -2.6677E-07 -3.5053E-06 S2 1.3913E-04 -6.3234E-05 2.6946E-05 -1.4894E-05 9.1265E-06 -2.2794E-06 -3.3621E-07 S3 6.2197E-05 -3.7732E-05 9.4338E-06 -7.5106E-06 1.6291E-06 -1.0346E-06 -1.6772E-06 S4 -7.1079E-07 -2.0058E-06 1.8179E-06 -1.4847E-06 7.9414E-07 -4.0736E-07 0.0000E+00 S5 -1.0799E-06 4.6406E-06 -3.0011E-06 1.2755E-06 -1.8294E-06 1.9243E-06 -6.9083E-07 S6 2.6508E-06 -4.4803E-07 1.5259E-06 -3.9821E-07 1.8019E-06 -8.6388E-07 0.0000E+00 S7 3.5908E-06 1.2739E-05 -1.0627E-06 4.7787E-06 -2.0505E-06 2.1258E-06 -1.5605E-06 S8 -8.7970E-07 -1.1652E-05 -1.3619E-05 -7.0491E-06 -3.9827E-06 2.0262E-07 -7.5284E-07 S9 3.2056E-04 8.0196E-04 9.2804E-04 5.5390E-04 1.5793E-04 -1.5712E-05 -3.2695E-05 S10 -4.7053E-04 1.7151E-03 2.5161E-03 1.6100E-03 5.1879E-04 3.1505E-05 -3.7864E-05 S11 1.2466E-04 -7.4546E-04 5.2266E-04 6.3885E-04 3.1495E-04 2.7917E-04 1.4653E-04 S12 9.0803E-05 2.6526E-04 1.1901E-04 5.8846E-05 2.1838E-05 -1.1634E-05 -1.2124E-05

[0129] Table 12-2

[0130] Table 13 shows the values ​​of the effective focal length f of the optical imaging lens in this embodiment, the maximum effective radius DT32 of the image side of the third lens, and the maximum effective radius DT61 of the object side of the sixth lens.

[0131] Parameter f (mm) DT32 (mm) DT61 (mm) Value 7.25 1.10 2.43

[0132] Table 13

[0133] like Figure 7A As shown, the optical imaging lens of Embodiment 5 further includes eight spacers, namely a first spacer P1, a first auxiliary spacer P1b, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the first auxiliary spacer P1b is positioned on the image side of the first spacer and at least partially contacts the image side of the first spacer. The second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; and the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer. The fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens. The fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 14 shows the basic parameters of the spacers in the optical imaging lens of Embodiment 5. All parameters in Table 14 are in millimeters (mm). The aforementioned spacers can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0134] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.018 0.018 0.496 0.520 0.873 0.846 0.364 0.433 0.261 1.346 Parameter d3s D3s d4s d5s D5m L Value 1.067 2.700 1.797 2.071 2.833 5.299

[0135] Table 14

[0136] Example 6

[0137] Figure 7B A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown. Figure 7B As shown, the optical imaging lens of Embodiment 6 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers. The lens group of the optical imaging lens of Embodiment 6 is exactly the same as that of the optical imaging lens of Embodiment 5, and its basic parameters are detailed in Tables 11 to 13, and will not be repeated here.

[0138] like Figure 7BAs shown, the optical imaging lens of Embodiment 6 further includes eight spacers, namely a first spacer P1, a first auxiliary spacer P1b, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the first auxiliary spacer P1b is positioned on the image side of the first spacer and at least partially contacts the image side of the first spacer. The second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; and the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer. The fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens. The fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 15 shows the basic parameters of the spacers in the optical imaging lens of Embodiment 6. All parameters in Table 15 are in millimeters (mm). The aforementioned spacers can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0139] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.024 0.018 0.417 0.514 0.867 0.764 0.464 0.494 0.261 1.388 Parameter d3s D3s d4s d5s D5m L Value 1.164 2.036 1.797 2.139 2.841 5.399

[0140] Table 15

[0141] Figure 8A The on-axis chromatic aberration curves of the optical imaging lenses of Embodiments 5 and 6 are shown, which represent the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curves of the optical imaging lenses of Embodiments 5 and 6 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curves of the optical imaging lenses of Embodiments 5 and 6 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 8D The magnification chromatic aberration curves of the optical imaging lenses of Embodiments 5 and 6 are shown, which represent the deviation of different image heights on the imaging plane after light passes through the lens. Figure 8E The defocus curves of the optical imaging lenses of Embodiments 5 and 6 are shown, indicating the focus shift. According to... Figure 8A to Figure 8E It can be seen that the optical imaging lenses of Embodiments 5 and 6 can achieve good imaging quality.

[0142] Example 7

[0143] Figure 9A A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown.Figure 9A As shown, the optical imaging lens of Embodiment 7 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers.

[0144] like Figure 9A As shown, the lens group of the optical imaging lens in Embodiment 7, from the object side to the image side, includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The sixth lens E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through each surface S1 to S12 and is finally imaged onto the imaging surface (not shown).

[0145] Table 16 shows the basic parameters of the lens group of the optical imaging lens of Example 7, where the units for radius of curvature, thickness, and effective focal length are millimeters (mm). Tables 17-1 and 17-2 give the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 7. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0146]

[0147]

[0148] Table 16

[0149] Face No. A4 A6 A8 A10 A12 A14 A16 S1 5.3293E-01 -6.3219E-02 1.2743E-03 -4.0455E-03 3.4856E-04 -2.7520E-04 -2.2915E-05 S2 4.9418E-02 -7.4223E-03 -2.4787E-03 1.5894E-03 -1.3487E-03 6.1639E-04 -3.1948E-04 S3 1.6503E-01 1.6850E-02 -4.2084E-03 1.5921E-03 -1.4965E-03 2.6176E-04 -2.3934E-04 S4 1.3477E-01 2.0589E-02 -2.8177E-03 -2.7702E-04 -5.5168E-04 -1.1017E-04 -5.7905E-05 S5 1.2274E-01 1.3166E-02 -9.3385E-04 7.4496E-04 -3.5442E-06 3.2334E-05 9.8259E-06 S6 2.8050E-02 4.5452E-03 -1.0745E-03 2.6892E-04 -7.6125E-06 2.1994E-05 2.8830E-06 S7 -1.7689E-01 -6.1240E-03 -2.7526E-03 -4.1465E-04 -5.1826E-06 6.8070E-06 2.8646E-05 S8 -2.5242E-01 6.0784E-03 -6.5102E-06 1.4571E-03 6.1491E-04 2.2536E-04 6.4908E-05 S9 -7.7592E-01 1.2935E-01 3.8334E-02 -7.3956E-03 -3.0746E-03 4.0803E-04 -1.3554E-04 S10 -6.5964E-01 2.0421E-01 3.0366E-02 -1.0834E-02 5.9221E-03 5.2077E-03 -1.3120E-03 S11 -4.0998E-01 2.6626E-01 -7.2731E-02 -1.3362E-03 1.2049E-02 5.5380E-03 2.9792E-03 S12 -8.9841E-01 1.3168E-01 -3.0957E-03 7.7060E-03 -2.0929E-03 -1.5392E-03 -1.0233E-03

[0150] Table 17-1

[0151] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -7.4443E-05 -1.2290E-05 -1.3592E-05 -1.7781E-06 -5.1776E-06 -1.6586E-06 -4.4567E-06 S2 1.5375E-04 -7.2808E-05 3.2744E-05 -1.6593E-05 9.7883E-06 -3.5466E-06 1.1963E-07 S3 6.6015E-05 -4.2754E-05 1.0763E-05 -8.2455E-06 1.6021E-06 -1.4828E-06 -1.6037E-06 S4 4.1316E-07 -1.5063E-06 1.1559E-06 -1.9524E-06 4.6053E-07 -5.4005E-08 0.0000E+00 S5 -1.7333E-06 4.0147E-06 -3.7178E-06 1.1044E-06 -1.5148E-06 1.8302E-06 -7.4021E-07 S6 3.2556E-06 3.3510E-07 1.9342E-06 -6.6311E-07 1.3557E-06 -8.4431E-07 0.0000E+00 S7 3.6646E-06 1.0811E-05 -9.3268E-07 3.7798E-06 -2.1204E-06 1.6159E-06 -1.3618E-06 S8 1.3955E-05 -1.5284E-06 -4.7050E-06 -3.8945E-06 -1.5553E-06 4.7225E-07 4.2922E-07 S9 -1.3331E-04 5.6763E-04 6.8968E-04 3.3636E-04 3.2338E-05 -6.1060E-05 -4.2432E-05 S10 -2.8213E-03 -8.6061E-04 4.0045E-04 3.7326E-04 4.1604E-05 -7.5612E-05 -4.7114E-05 S11 1.4395E-03 1.3504E-04 5.2266E-04 3.2529E-04 9.7315E-05 1.1572E-04 9.0623E-05 S12 2.2580E-05 1.7603E-04 8.4980E-05 2.8441E-05 1.2884E-05 -3.2631E-06 -6.5738E-06

[0152] Table 17-2

[0153] Table 18 shows the values ​​of the effective focal length f of the optical imaging lens in this embodiment, the maximum effective radius DT32 of the image side of the third lens, and the maximum effective radius DT61 of the object side of the sixth lens.

[0154] Parameter f (mm) DT32 (mm) DT61 (mm) Value 7.25 1.10 2.43

[0155] Table 18

[0156] like Figure 9A As shown, the optical imaging lens of Embodiment 7 further includes seven spacers: a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer; the fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens; the fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 19 shows the basic parameters of the spacer of the optical imaging lens in Embodiment 7. The unit of each parameter in Table 19 is millimeters (mm). The aforementioned spacer can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0157] Parameter CP1 CP2 CP4 CP5 EP01 EP12 EP23 EP34 EP45 d2s Value 0.018 0.018 0.419 0.600 1.014 0.693 0.410 0.410 0.318 1.346 Parameter d3s D3s d4s d5s D5m L Value 1.071 2.700 1.316 2.119 2.872 5.319

[0158] Table 19

[0159] Example 8

[0160] Figure 9B A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown. Figure 9B As shown, the optical imaging lens of Embodiment 8 includes a lens barrel P0, lens groups E1 to E6, and multiple spacers. The lens group of the optical imaging lens of Embodiment 8 is exactly the same as that of the optical imaging lens of Embodiment 7, and its basic parameters are detailed in Tables 16 to 18, and will not be repeated here.

[0161] like Figure 9BAs shown, the optical imaging lens of Embodiment 8 further includes seven spacers: a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, and a fifth auxiliary spacer P5b. The first spacer P1 is positioned on the image side of the first lens and at least partially contacts the image side of the first lens; the second spacer P2 is positioned on the image side of the second lens and at least partially contacts the image side of the second lens; the third spacer P3 is positioned on the image side of the third lens and at least partially contacts the image side of the third lens; the fourth spacer P4 is positioned on the image side of the fourth lens and at least partially contacts the image side of the fourth lens; the fourth auxiliary spacer P4b is positioned on the image side of the fourth spacer and at least partially contacts the image side of the fourth spacer; the fifth spacer P5 is positioned on the image side of the fifth lens and at least partially contacts the image side of the fifth lens; the fifth auxiliary spacer P5b is positioned on the image side of the fifth spacer and at least partially contacts the image side of the fifth spacer. Table 20 shows the basic parameters of the spacer of the optical imaging lens of Embodiment 8. The unit of each parameter in Table 20 is millimeters (mm). The aforementioned spacer can block excess external light from entering, allowing the lens and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens.

[0162]

[0163]

[0164] Table 20

[0165] Figure 10A The on-axis chromatic aberration curves of the optical imaging lenses of Embodiments 7 and 8 are shown, which represent the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curves of the optical imaging lenses of Embodiments 7 and 8 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 10C The distortion curves of the optical imaging lenses of Embodiments 7 and 8 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 10D The magnification chromatic aberration curves of the optical imaging lenses of Embodiments 7 and 8 are shown, which represent the deviation of different image heights on the imaging plane after light passes through the lens. Figure 10E The defocus curves of the optical imaging lenses of Embodiments 7 and 8 are shown, indicating the focus shift. According to... Figure 10A to Figure 10E It can be seen that the optical imaging lenses of Embodiments 7 and 8 can achieve good imaging quality.

[0166] In summary, the optical imaging lenses of Examples 1 to 8 satisfy the relationships shown in Table 21.

[0167] Conditional Expression / Example 1 2 3 4 5 6 7 8 CP5 / T56+CP4 / T45 1.312 1.365 1.427 1.425 1.245 1.158 1.268 1.167 f4 / d4s -75.960 -67.669 -64.428 -62.347 -55.642 -55.642 -75.960 -66.364 EP34 / CT5+CT6 / CP5 2.434 2.350 2.603 2.591 2.252 2.436 2.068 2.268 L / f 0.731 0.772 0.731 0.783 0.731 0.745 0.734 0.754 f5xN5 / EP45 86.752 87.738 95.007 95.007 112.794 112.794 97.320 88.941 (T23+CP2) / (T12+CP1) 4.834 4.425 2.941 2.743 4.830 4.449 5.891 5.362 (EP23+EP34) / T34 1.544 1.629 1.505 1.556 1.602 1.924 1.659 1.865 f12 / d2s 2.703 3.172 3.230 3.390 3.468 3.365 3.473 3.524 f23 / d3s -3.414 -3.775 -3.155 -3.508 -4.057 -3.716 -4.013 -4.191 f45 / d5s 10.432 9.440 10.520 10.166 10.043 9.723 10.522 10.410 EP01 / f1+EP12 / f2 0.185 0.277 0.187 0.276 0.159 0.166 0.216 0.266 (D3s-d3s+DT32) / R6 0.727 0.605 0.772 0.669 0.723 0.521 0.698 0.528 R12 / R11 4.258 4.258 2.851 2.851 5.063 5.063 5.765 5.765 (D5m-DT61) / f6 -0.052 -0.062 -0.042 -0.052 -0.052 -0.053 -0.053 -0.054

[0168] Table 21

[0169] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0170] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that, include: The lens barrel, the lens assembly and multiple spacers disposed within the lens barrel, wherein, The lens group comprises, sequentially from the object side to the image side along the optical axis: A first lens with positive optical power has convex surfaces on both its object side and image side. A second lens with negative optical power has a concave image-side surface; A third lens with negative optical power has a convex object side and a concave image side. The fourth lens has negative optical power and its image-side surface is concave. The fifth lens with positive optical power has a convex image-side surface; The sixth lens with negative optical power has a concave object side and a convex image side. The plurality of spacers includes: A fourth spacer is placed between the fourth lens and the fifth lens and contacts the image-side surface of the fourth lens; and a fifth spacer is placed between the fifth lens and the sixth lens and contacts the image-side surface of the fifth lens; The optical imaging lens has six lenses with optical power. The maximum height L of the lens barrel along the optical axis and the effective focal length f of the optical imaging lens satisfy: 0.731 ≤ L / f ≤ 0.783; and The effective focal length f5 of the fifth lens, the refractive index N5 of the fifth lens, and the spacing EP45 between the fourth spacer and the fifth spacer along the optical axis satisfy: 112.794≥f5×N5 / EP45≥86.752; The combined focal length f45 of the fourth lens and the fifth lens and the inner diameter d5s of the object side of the fifth spacer satisfy: 9.440≤f45 / d5s≤10.522; The radius of curvature R11 of the object side of the sixth lens and the radius of curvature R12 of the image side of the sixth lens satisfy: 2.851≤R12 / R11≤5.

765.

2. The optical imaging lens according to claim 1, characterized in that, The maximum thickness CP4 of the fourth spacer along the optical axis, the maximum thickness CP5 of the fifth spacer along the optical axis, the air gap T45 between the fourth and fifth lenses on the optical axis, and the air gap T56 between the fifth and sixth lenses on the optical axis satisfy: 1.158≤CP5 / T56+CP4 / T45≤1.

427.

3. The optical imaging lens according to claim 1, characterized in that, The effective focal length f4 of the fourth lens and the inner diameter d4s of the object side of the fourth spacer satisfy the following condition: -75.960≤f4 / d4s≤-55.

642.

4. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also include: A second spacer is positioned between the second lens and the third lens and contacts the image-side surface of the second lens; and The third spacer is placed between the third lens and the fourth lens and is in contact with the image side of the third lens; in, The spacing EP23 between the second spacer and the third spacer along the optical axis, the spacing EP34 between the third spacer and the fourth spacer along the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: 1.5 < (EP23 + EP34) / T34 ≤ 1.

924.

5. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a third spacer disposed between the third lens and the fourth lens and in contact with the image side surface of the third lens; The spacing EP34 between the third spacer and the fourth spacer along the optical axis, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the maximum thickness CP5 of the fifth spacer along the optical axis satisfy: 2.068≤EP34 / CT5+CT6 / CP5≤2.

603.

6. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also include: A first spacer is positioned between the first lens and the second lens and contacts the image-side surface of the first lens; and The second spacer is placed between the second lens and the third lens and is in contact with the image side of the second lens; in, The air gap T12 between the first lens and the second lens on the optical axis, the air gap T23 between the second lens and the third lens on the optical axis, the maximum thickness CP1 of the first spacer along the optical axis and the maximum thickness CP2 of the second spacer along the optical axis satisfy: 2.743≤(T23+CP2) / (T12+CP1)≤5.

891.

7. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a second spacer disposed between the second lens and the third lens and in contact with the image side surface of the second lens; The combined focal length f12 of the first lens and the second lens and the inner diameter d2s of the object side of the second spacer satisfy: 2.703≤f12 / d2s≤3.

524.

8. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a third spacer disposed between the third lens and the fourth lens and in contact with the image side surface of the third lens; The combined focal length f23 of the second lens and the third lens and the inner diameter d3s of the object side of the third spacer satisfy: -4.191≤f23 / d3s≤-3.

155.

9. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The refractive indices of both the fourth and fifth lenses are greater than 1.

68.

10. The optical imaging lens according to any one of claims 1 to 3, characterized in that, The plurality of spacers also include: A first spacer is positioned between the first lens and the second lens and contacts the image-side surface of the first lens; and The second spacer is placed between the second lens and the third lens and is in contact with the image side of the second lens; in, The distance EP01 between the object-side end face of the lens barrel and the object-side side face of the first spacer along the optical axis, the distance EP12 between the first spacer and the second spacer along the optical axis, and the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 0.159≤EP01 / f1+EP12 / f2≤0.

277.

11. The optical imaging lens according to any one of claims 1 to 3, characterized in that, The plurality of spacers also includes a third spacer disposed between the third lens and the fourth lens and in contact with the image side surface of the third lens; The outer diameter D3s of the object side of the third spacer, the inner diameter d3s of the object side of the third spacer, the maximum effective radius DT32 of the image side of the third lens, and the radius of curvature R6 of the image side of the third lens satisfy: 0.5 < (D3s - d3s + DT32) / R6 ≤ 0.

772.

12. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The outer diameter D5m of the image side of the fifth spacer, the maximum effective radius DT61 of the object side of the sixth lens, and the effective focal length f6 of the sixth lens satisfy: -0.062≤(D5m-DT61) / f6<0.

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