Optical imaging lens

Abstract

This application discloses an optical imaging lens. The optical imaging lens includes a lens barrel and a lens group mounted 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, a sixth lens, and a seventh lens, each having optical power. The outer diameter of the seventh lens is larger than the outer diameter of any one of the first to sixth lenses. The optical power of the fifth lens and the seventh lens satisfy the following condition: three of the first to sixth lenses have positive optical power, and the other three lenses have negative optical power. The optical imaging lens further includes a sixth spacer element located between the sixth and seventh lenses; and a seventh spacer element located on the image side of the seventh lens. The optical imaging lens satisfies the following condition: 2.0 < (|D7m / R14|-|d6s / R10|)×Fno < 5.0.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on June 10, 2022, entitled "Optical Imaging Lens" and with application number 202210663840.0. Technical Field

[0003] This application relates to the field of optical components, and more specifically, to an optical imaging lens. Background Technology

[0004] With the development of technology, users have placed higher demands on the photography performance of mobile phones in different scenarios, which has led the mobile phone industry to impose increasingly higher requirements on the hardware and software installed in mobile phones. In particular, in order to improve the competitiveness of their products, major smartphone manufacturers have put forward higher design requirements for the optical imaging lenses installed in smartphones.

[0005] In the field of optical imaging lenses, the presence of stray light and deviations in assembly stability significantly affect the image quality. For example, if the optical power settings of the lenses in an optical imaging lens are not properly configured, the deflection paths of light within the lens may become chaotic, leading to stray light. Similarly, if the size of the lens closest to the image side is not properly configured, a satisfactory image plane size may not be achieved. Furthermore, improper design of the position and size of the spacers in an optical imaging lens can also result in chaotic light deflection paths, further contributing to stray light. Moreover, improper design of the position and size of the spacers can also lead to poor stability between the lenses, resulting in poor assembly stability of the optical imaging lens.

[0006] Therefore, how to rationally arrange the lenses and spacers in an optical imaging lens, and how to rationally set the optical parameters of the optical imaging lens, in order to control the light path in the optical imaging lens, improve the manufacturability of each lens, improve the assembly stability of the optical imaging lens, and reduce the low production yield of the optical imaging lens, is one of the urgent problems to be solved in the field of optical imaging. Summary of the Invention

[0007] This application provides an optical imaging lens comprising a lens barrel and a lens assembly mounted within the lens barrel. The lens assembly, arranged sequentially along the optical axis from the object side to the image side, includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, each having optical power. The outer diameter of the seventh lens is larger than the outer diameter of any one of the first to sixth lenses; three of the first to sixth lenses have positive optical power, and the other three have negative optical power. The optical imaging lens further includes a first spacer element located between the first and second lenses; and a second spacer element located between the second and third lenses. The optical imaging lens satisfies: 24 < D1s / (EP01-EP12) + D2m / CT2 < 42, where D1s is the outer diameter of the object side of the first spacer element, EP01 is the distance between the object side end of the lens barrel and the object side of the first spacer element in the direction parallel to the optical axis, EP12 is the distance between the image side of the first spacer element and the object side of the second spacer element in the direction parallel to the optical axis, D2m is the outer diameter of the image side of the second spacer element, and CT2 is the center thickness of the second lens on the optical axis.

[0008] In one embodiment, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror.

[0009] In one embodiment, the optical imaging lens further includes a third spacer element located between the third lens and the fourth lens, wherein the optical imaging lens satisfies: 14 < |d0m / R1| + EP23 / (CT3-CT2) < 20, where d0m is the inner diameter of the image-side end of the lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, EP23 is the spacing distance between the image-side surface of the second spacer element and the object-side surface of the third spacer element in the direction parallel to the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0010] In one embodiment, the optical imaging lens further includes a fourth spacer element located between the fourth lens and the fifth lens, wherein the optical imaging lens satisfies: 27.0 < R6 / CT3 + D4s / CT4 < 38.5, where R6 is the radius of curvature of the image side of the third lens, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and D4s is the outer diameter of the object side of the fourth spacer element.

[0011] In one embodiment, the optical imaging lens further includes: a sixth spacer element located between the sixth lens and the seventh lens; and a seventh spacer element located on the image-side surface of the seventh lens; the optical imaging lens can satisfy: 2.0 < (|D7m / R14| - |d6s / R10|) × Fno < 5.0, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, and D7m is the outer diameter of the image-side surface of the seventh spacer element.

[0012] In one embodiment, the optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens. The optical imaging lens can satisfy: 18.0 < D4m / EP45 + ds / T45 < 29, where D4m is the outer diameter of the image-side surface of the fourth spacer element, EP45 is the spacing distance between the image-side surface of the fourth spacer element and the object-side surface of the fifth spacer element in the direction parallel to the optical axis, ds is the inner diameter of the opening at the object-side end of the lens barrel, and T45 is the spacing distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens in the optical axis.

[0013] In one embodiment, the optical imaging lens may satisfy: 8.0 < d5s / CT4 < 11.0, where d5s is the inner diameter of the object side of the fifth spacer element and CT4 is the center thickness of the fourth lens on the optical axis.

[0014] In one embodiment, the optical imaging lens may satisfy: 30.0 < R2 / (CT6-T56) + |D7s / R10| < 61.0, where D7s is the outer diameter of the object side of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, T56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, R2 is the radius of curvature of the image side of the first lens, and R10 is the radius of curvature of the image side of the fifth lens.

[0015] In one embodiment, the optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens, wherein the optical imaging lens satisfies: 39 < d5s / T56 + d3s / CT3 < 60, where T56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, d3s is the inner diameter of the object side of the third spacer element, d5s is the inner diameter of the object side of the fifth spacer element, and CT3 is the center thickness of the third lens on the optical axis.

[0016] In one embodiment, the optical imaging lens may satisfy: 4.0 < d5m × R10 / (SD52 × R11) < 7.0, where d5m is the inner diameter of the image-side surface of the fifth spacer element, R10 is the radius of curvature of the image-side surface of the fifth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, and SD52 is the maximum effective radius of the image-side surface of the fifth lens.

[0017] In one embodiment, the object-side surface of the fourth lens is convex, and the image-side surface is also convex.

[0018] In one embodiment, the optical power of the fifth lens and the optical power of the seventh lens It can be satisfied:

[0019] This application also provides an optical imaging lens. The optical imaging lens includes a lens barrel and a lens assembly mounted within the lens barrel. The lens assembly, 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, a sixth lens, and a seventh lens, each having optical power. The fifth lens has an optical power of... and the optical power of the seventh lens It can be satisfied: The optical imaging lens also includes a third spacer element located between the third and fourth lenses; and a fifth spacer element located between the fifth and sixth lenses. The optical imaging lens satisfies: 39 < d5s / T56 + d3s / CT3 < 60, where T56 is the distance along the optical axis between the image-side surface of the fifth lens and the object-side surface of the sixth lens, d3s is the inner diameter of the object-side surface of the third spacer element, d5s is the inner diameter of the object-side surface of the fifth spacer element, and CT3 is the center thickness of the third lens along the optical axis.

[0020] In one embodiment, the optical imaging lens further includes: a first spacer element located between the first lens and the second lens; and a second spacer element located between the second lens and the third lens; the optical imaging lens can satisfy: 24 < D1s / (EP01-EP12) + D2m / CT2 < 42, where D1s is the outer diameter of the object side of the first spacer element, EP01 is the distance between the object side end of the lens barrel and the object side of the first spacer element in the direction parallel to the optical axis, EP12 is the distance between the image side of the first spacer element and the object side of the second spacer element in the direction parallel to the optical axis, D2m is the outer diameter of the image side of the second spacer element, and CT2 is the center thickness of the second lens on the optical axis.

[0021] In one embodiment, the optical imaging lens may satisfy: 14 < |d0m / R1| + EP23 / (CT3-CT2) < 20, where d0m is the inner diameter of the image-side end of the lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, EP23 is the spacing distance between the image-side surface of the second spacer element and the object-side surface of the third spacer element in the direction parallel to the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0022] In one embodiment, the optical imaging lens further includes a fourth spacer element located between the fourth lens and the fifth lens, wherein the optical imaging lens satisfies: 27.0 < R6 / CT3 + D4s / CT4 < 38.5, where R6 is the radius of curvature of the image side of the third lens, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and D4s is the outer diameter of the object side of the fourth spacer element.

[0023] In one embodiment, the optical imaging lens further includes: a sixth spacer element located between the sixth lens and the seventh lens; and a seventh spacer element located on the image-side surface of the seventh lens; the optical imaging lens can satisfy: 2.0 < (|D7m / R14| - |d6s / R10|) × Fno < 5.0, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, and D7m is the outer diameter of the image-side surface of the seventh spacer element.

[0024] In one embodiment, the optical imaging lens may satisfy: 18.0 < D4m / EP45 + ds / T45 < 29, where D4m is the outer diameter of the image-side surface of the fourth spacer element, EP45 is the spacing distance between the image-side surface of the fourth spacer element and the object-side surface of the fifth spacer element in the direction parallel to the optical axis, ds is the inner diameter of the opening at the object-side end of the lens barrel, and T45 is the spacing distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens in the optical axis.

[0025] In one embodiment, the optical imaging lens may satisfy: 8.0 < d5s / CT4 < 11.0, where d5s is the inner diameter of the object side of the fifth spacer element and CT4 is the center thickness of the fourth lens on the optical axis.

[0026] In one embodiment, the optical imaging lens may satisfy: 30.0 < R2 / (CT6-T56) + |D7s / R10| < 61.0, where D7s is the outer diameter of the object side of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, T56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, R2 is the radius of curvature of the image side of the first lens, and R10 is the radius of curvature of the image side of the fifth lens.

[0027] In one embodiment, the optical imaging lens can satisfy: 4.0 < d5m × R10 / (SD52 × R11) < 7.0, where d5m is the inner diameter of the image-side surface of the fifth spacer element, R10 is the radius of curvature of the image-side surface of the fifth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, and SD52 is the maximum effective radius of the image-side surface of the fifth lens.

[0028] In one embodiment, the object-side surface of the fourth lens is convex, and the image-side surface is also convex.

[0029] This application also provides an optical imaging lens, which includes a lens barrel and a lens group mounted 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, a sixth lens, and a seventh lens, each having optical power. The outer diameter of the seventh lens is larger than the outer diameter of any one of the first to sixth lenses; the optical power of the fifth lens... and the optical power of the seventh lens It can be satisfied: Three of the first to sixth lenses have positive optical power, and the other three lenses have negative optical power; the optical imaging lens also includes: a sixth spacer element located between the sixth and seventh lenses; and a seventh spacer element located on the image-side surface of the seventh lens; the optical imaging lens satisfies: 2.0 < (|D7m / R14| - |d6s / R10|) × Fno < 5.0, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, and D7m is the outer diameter of the image-side surface of the seventh spacer element.

[0030] This application also provides an optical imaging lens, which includes a lens barrel and a lens group mounted 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, a sixth lens, and a seventh lens, each having optical power. The fifth lens has an optical power of... and the optical power of the seventh lens It can be satisfied: The optical imaging lens also includes: a sixth spacer element located between the sixth and seventh lenses; and a seventh spacer element located on the image-side surface of the seventh lens; the optical imaging lens can satisfy: 2.0 < (|D7m / R14| - |d6s / R10|) × Fno < 5.0, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, and D7m is the outer diameter of the image-side surface of the seventh spacer element.

[0031] This application also provides an optical imaging lens, which includes a lens barrel and a lens group mounted 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, a sixth lens, and a seventh lens, each having optical power. The fifth lens has an optical power of... and the optical power of the seventh lens It can be satisfied: The optical imaging lens also includes a seventh spacer element located on the image-side surface of the seventh lens; the optical imaging lens can satisfy: 30.0<R2 / (CT6-T56)+|D7s / R10|<61.0, where D7s is the outer diameter of the object-side surface of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, R2 is the radius of curvature of the image-side surface of the first lens, and R10 is the radius of curvature of the image-side surface of the fifth lens.

[0032] In an exemplary embodiment of this application, by reasonably controlling the outer diameter of the seventh lens and the optical power of the first to sixth lenses, such as satisfying that "the outer diameter of the seventh lens is greater than the outer diameter of any one of the first to sixth lenses; and three of the first to sixth lenses have positive optical power, while the other three have negative optical power," it is beneficial to make the light converge rapidly after passing through the first lens, thus narrowing the aperture. This allows the lens with positive optical power to guide the convergence of light in the inner field of view, correcting paraxial aberration. It is also beneficial to allow the lens with negative optical power to guide the convergence of light in the outer field of view, correcting outer field of view aberration. By reasonably controlling the optical power of each lens, the imaging quality of the lens is improved. For example, by setting 24 < D1s / (EP01-EP12) + D2m / CT2 < 42, this application helps improve the manufacturability of lenses closer to the object side in the optical imaging lens, mitigating the low yield problem caused by poor molding. It also helps to reasonably allocate the optical power of each lens, improving imaging quality. Attached Figure Description

[0033] 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:

[0034] Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0035] Figure 2A and Figure 2B The on-axis chromatic aberration curve and astigmatism curve of the optical imaging lens of Example 1 are shown respectively;

[0036] Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0037] Figure 4A and Figure 4B The on-axis chromatic aberration curve and astigmatism curve of the optical imaging lens of Example 2 are shown respectively;

[0038] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0039] Figure 6A and Figure 6B The on-axis chromatic aberration curve and astigmatism curve of the optical imaging lens of Example 3 are shown respectively;

[0040] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0041] Figure 8A and Figure 8B The on-axis chromatic aberration curve and astigmatism curve of the optical imaging lens of Example 4 are shown respectively;

[0042] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0043] Figure 10A and Figure 10B The on-axis chromatic aberration curve and astigmatism curve of the optical imaging lens of Example 5 are shown respectively;

[0044] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown;

[0045] Figure 12A and Figure 12B The on-axis chromatic aberration curve and astigmatism curve of the optical imaging lens of Example 6 are shown respectively; and

[0046] Figure 13 A schematic diagram showing some parameters of an optical imaging lens according to an embodiment of this application is provided. Detailed Implementation

[0047] 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.

[0048] 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, and the first spacer element may also be referred to as the second spacer element or the third spacer element.

[0049] 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 drawn strictly to scale. It should be understood that, for ease of illustration, the thickness, size, and shape of the spacer elements and lens barrel have also been slightly exaggerated in the accompanying drawings.

[0050] In this text, 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. It should be understood that the surface of each spacer element closest to the subject is called the object-side surface of the spacer element, and the surface of each spacer element closest to the imaging plane is called the image-side surface of the spacer element. The surface of the lens barrel closest to the subject is called the object-side end of the lens barrel, and the surface of the lens barrel closest to the imaging plane is called the image-side end of the lens barrel.

[0051] 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.

[0052] 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.

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of 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 the patent 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 groups (i.e., the first to the seventh lenses), lens barrel structures, and spacer elements in the various embodiments of this application can be arbitrarily combined, and it is not limited to the lens group in one embodiment being only combined with the lens barrel structure, spacer elements, etc. of that embodiment. The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] The features, principles and other aspects of this application are described in detail below.

[0055] An optical imaging lens according to an exemplary embodiment of this application may include a lens barrel and a lens group mounted within the lens barrel. The lens group may include seven lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged sequentially along the optical axis from the object side to the image side. Any two adjacent lenses among the first to seventh lenses may have a gap. The lens barrel can accommodate the first to seventh lenses.

[0056] According to an exemplary embodiment of this application, each of the first to seventh lenses may have an optical region for optical imaging and a non-optical region extending outward from the outer periphery of the optical region. Generally speaking, the optical region refers to the area of ​​the lens used for optical imaging, while the non-optical region is the structural area of ​​the lens. During the assembly of the optical imaging lens, spacer elements can be set at the non-optical regions of each lens using processes such as adhesive bonding, and each lens can be connected to the lens barrel, i.e., each lens abuts against the inner wall of the lens barrel. During the imaging process of the optical imaging lens, the optical regions of each lens can transmit light from the object to form an optical path, forming the final optical image; while the non-optical regions of each assembled lens are housed in the lens barrel, which cannot transmit light, thus the non-optical regions do not directly participate in the imaging process of the optical imaging lens. It should be noted that, for ease of description, this application describes each lens as divided into two parts: an optical region and a non-optical region. However, it should be understood that the optical region and the non-optical region of the lens can be formed as a whole during the manufacturing process, rather than as two separate parts.

[0057] An optical imaging lens according to an exemplary embodiment of this application may include seven spacer elements located on the image-side surfaces of the first lens to the seventh lens, namely a first spacer element, a second spacer element, a third spacer element, a fourth spacer element, a fifth spacer element, a sixth spacer element, and a seventh spacer element. Specifically, the optical imaging lens may include a first spacer element located between the first lens and the second lens, which may abut against a non-optical region on the image-side surface of the first lens; a second spacer element located between the second lens and the third lens, which may abut against a non-optical region on the image-side surface of the second lens; a third spacer element located between the third lens and the fourth lens, which may abut against a non-optical region on the image-side surface of the third lens; a fourth spacer element located between the fourth lens and the fifth lens, which may abut against a non-optical region on the image-side surface of the fourth lens; a fifth spacer element located between the fifth lens and the sixth lens, which may abut against a non-optical region on the image-side surface of the fifth lens; a sixth spacer element located between the sixth lens and the seventh lens, which may abut against a non-optical region on the image-side surface of the sixth lens; and a seventh spacer element located on the image-side surface of the seventh lens, which may abut against a non-optical region on the image-side surface of the seventh lens. For example, the first spacer element may contact a non-optical region on the image side of the first lens and simultaneously contact a non-optical region on the object side of the second lens. For instance, the object side of the first spacer element may contact a non-optical region on the image side of the first lens, and the image side of the first spacer element may contact a non-optical region on the object side of the second lens; and so on, the object side of the seventh spacer element may contact a non-optical region on the image side of the seventh lens.

[0058] According to an exemplary embodiment of this application, the spacer element may include at least one spacer plate. By reasonably setting the number, thickness, inner diameter, and outer diameter of the spacers, it is beneficial to improve the assembly of the optical imaging lens, to block stray light, and to improve the imaging quality of the optical imaging lens. Exemplarily, the spacer element may also include at least one spacer ring. By controlling the thickness and structure of the spacer ring, it is beneficial to improve the assembly stability of the optical imaging lens. Exemplarily, the seventh spacer element may include at least one pressure ring, which is beneficial to improve the stability of the assembled optical imaging lens and make the optical imaging lens reliable.

[0059] According to an exemplary embodiment of this application, the outer diameter of the seventh lens is larger than the outer diameter of any one of the first to sixth lenses.

[0060] According to an exemplary embodiment of this application, three of the first to sixth lenses have positive optical power, and the other three lenses have negative optical power. In other words, the number of lenses with positive optical power is the same as the number of lenses with negative optical power. This optical power setting is beneficial for rapidly converging light after passing through the first lens, narrowing the aperture, allowing the lenses with positive optical power to guide the convergence of light in the inner field of view and correct paraxial aberration, and also for allowing the lenses with negative optical power to guide the convergence of light in the outer field of view and correct outer field of view aberration. By reasonably controlling the optical power of each lens, the image quality of the lens is improved.

[0061] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 24 < D1s / (EP01-EP12) + D2m / CT2 < 42, where D1s is the outer diameter of the object-side surface of the first spacer element, EP01 is the distance between the object-side end of the lens barrel and the object-side surface of the first spacer element in the direction parallel to the optical axis, EP12 is the distance between the image-side surface of the first spacer element and the object-side surface of the second spacer element in the direction parallel to the optical axis, D2m is the outer diameter of the image-side surface of the second spacer element, and CT2 is the center thickness of the second lens on the optical axis. Satisfying 24 < D1s / (EP01-EP12) + D2m / CT2 < 42 can effectively constrain the outer diameter-to-thickness ratio of the second lens within a reasonable range, improve the manufacturability of the second lens, increase the yield, and also help to rationally allocate the optical power of each lens, thereby improving the imaging quality.

[0062] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 14 < |d0m / R1| + EP23 / (CT3-CT2) < 20, where d0m is the inner diameter of the image-side end of the lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, EP23 is the distance between the image-side surface of the second spacer element and the object-side surface of the third spacer element in the direction parallel to the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. Satisfying 14 < |d0m / R1| + EP23 / (CT3-CT2) < 20 is beneficial for controlling the optical power distribution of the first lens by reasonably controlling the radius of curvature of the object-side surface of the first lens, thereby effectively controlling the aberration correction of the first lens. In addition, by constraining the center thickness of the third lens and the second lens, it is helpful to reasonably distribute the optical power of each lens and improve the imaging quality.

[0063] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 27.0 < R6 / CT3 + D4s / CT4 < 38.5, where R6 is the radius of curvature of the image-side surface of the third lens, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and D4s is the outer diameter of the object-side surface of the fourth spacer element. Satisfying 27.0 < R6 / CT3 + D4s / CT4 < 38.5 allows for a smooth surface profile of the third lens by controlling the ratio of the radius of curvature of the image-side surface of the third lens to its thickness within a certain range, which is beneficial for manufacturing third lenses with larger apertures. Since the thickness of the fourth lens is relatively more sensitive, controlling the ratio between the outer diameter of the object-side surface of the fourth spacer element and the thickness of the fourth lens can effectively improve the manufacturability of the fourth lens and mitigate the problem of low yield caused by poor molding.

[0064] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 2.0 < (|D7m / R14| - |d6s / R10|) × Fno < 5.0, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, and D7m is the outer diameter of the image-side surface of the seventh spacer element. Satisfying 2.0 < (|D7m / R14| - |d6s / R10|) × Fno < 5.0 ensures that light continues to converge when passing through the sixth lens, thus guaranteeing the rationality of light direction. Furthermore, by controlling the inner diameter of the object-side surface of the seventh spacer element, stray light can be effectively blocked, and image quality can be improved.

[0065] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 18.0 < D4m / EP45 + ds / T45 < 29, where D4m is the outer diameter of the image-side surface of the fourth spacer element, EP45 is the distance between the image-side surface of the fourth spacer element and the object-side surface of the fifth spacer element in the direction parallel to the optical axis, ds is the inner diameter of the opening at the object-side end of the lens barrel, and T45 is the distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens in the optical axis. Satisfying 18.0 < D4m / EP45 + ds / T45 < 29 helps control the air gap between the fourth and fifth lenses. The setting of the fourth spacer element can effectively improve the large step difference structure between the fourth and fifth lenses. The auxiliary support between the fourth spacer element and the lens barrel can effectively improve assembly stability and increase yield.

[0066] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 8.0 < d5s / CT4 < 11.0, where d5s is the inner diameter of the object-side surface of the fifth spacer element, and CT4 is the center thickness of the fourth lens on the optical axis. Satisfying 8.0 < d5s / CT4 < 11.0 can reduce excessive refraction of light after passing through the fourth lens, and at the same time, by controlling the inner diameter of the object-side surface of the fifth spacer element, the assembly stability between the fifth spacer element and the fourth lens can be improved.

[0067] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 30.0 < R2 / (CT6-T56) + |D7s / R10| < 61.0, where D7s is the outer diameter of the object-side surface of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, T56 is the distance between the image-side surface of the fifth lens and the object-side surface of the sixth lens on the optical axis, R2 is the radius of curvature of the image-side surface of the first lens, and R10 is the radius of curvature of the image-side surface of the fifth lens. Satisfying 30.0 < R2 / (CT6-T56) + |D7s / R10| < 61.0 effectively controls the thickness of the sixth lens and the air gap between the fifth and sixth lenses. The auxiliary support between the sixth lens and the lens barrel effectively improves the large step difference structure between the fifth and sixth lenses, improves assembly stability, and increases yield. Furthermore, this condition effectively constrains the radius of curvature of the image-side surface of the fifth lens, reducing the light deflection angle and improving the imaging quality of the optical imaging lens.

[0068] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 39 < d5s / T56 + d3s / CT3 < 60, where T56 is the distance on the optical axis between the image-side surface of the fifth lens and the object-side surface of the sixth lens, d3s is the inner diameter of the object-side surface of the third spacer element, d5s is the inner diameter of the object-side surface of the fifth spacer element, and CT3 is the center thickness of the third lens on the optical axis. Satisfying 39 < d5s / T56 + d3s / CT3 < 60 allows control over the deflection angle of light in the optical imaging lens, reducing the overall size of the lens and achieving lens miniaturization. Simultaneously, by controlling the inner diameter of the object-side surface of the third spacer element, stray light can be effectively blocked, improving image quality.

[0069] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 4.0 < d5m × R10 / (SD52 × R11) < 7.0, where d5m is the inner diameter of the image-side surface of the fifth spacer element, R10 is the radius of curvature of the image-side surface of the fifth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, and SD52 is the maximum effective radius of the image-side surface of the fifth lens. Satisfying 4.0 < d5m × R10 / (SD52 × R11) < 7.0 can reduce the deflection angle of light in the optical imaging lens and improve the imaging quality of the optical imaging lens. In addition, by controlling the inner and outer diameters of the image-side surface of the fifth spacer element, the width of the lens barrel supported by the fifth spacer element can be effectively controlled, and stray light can be effectively blocked, thus improving the imaging quality.

[0070] According to an exemplary embodiment of this application, the object-side surface of the fourth lens is convex, and the image-side surface is also convex. Setting the fourth lens to a convex-convex shape can effectively correct aberrations and improve the imaging quality of the optical imaging lens.

[0071] According to an exemplary embodiment of this application, the optical imaging lens of this application can satisfy: in, It is the optical power of the fifth lens. This is the optical power of the seventh lens. In other words, the fifth and seventh lenses can have the same optical power. This satisfies: It can guide the convergence of light rays from the inner and outer fields of view, correct paraxial aberration and outer field of view aberration, and help to cover as much of the different focal length range as possible, thereby improving image quality.

[0072] In an exemplary embodiment, the total effective focal length f of the optical imaging lens can be in the range of 5mm to 6.5mm; the effective focal length f1 of the first lens can be in the range of 5.5mm to 6.5mm; the effective focal length f2 of the second lens can be in the range of -18mm to -13mm; the effective focal length f3 of the third lens can be in the range of -34mm to -27mm; the effective focal length f4 of the fourth lens can be in the range of 13mm to 17.5mm; the effective focal length f5 of the fifth lens can be in the range of -23mm to -8mm; the effective focal length f6 of the sixth lens can be in the range of 4mm to 6.5mm; and the effective focal length f7 of the seventh lens can be in the range of -5mm to -4mm.

[0073] In an exemplary embodiment, the distance TTL between the object side of the first lens and the imaging surface of the optical imaging lens on the optical axis can be in the range of 6.5 mm to 8 mm; half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens can be in the range of 5 mm to 6 mm; half the maximum field of view (Semi-FOV) of the optical imaging lens can be in the range of 41° to 44°; and the relative F-number (Fno) of the optical imaging lens can be in the range of 1.4 to 1.6.

[0074] In an exemplary embodiment, the optical imaging lens according to this application further includes an aperture stop disposed between the object side and the first lens. Optionally, the optical imaging lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. This application proposes an optical imaging lens with characteristics such as a large image plane, good assembly stability, high light-gathering ability, and high imaging quality. The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the seven lenses mentioned above. By rationally allocating the optical power, surface shape, material, center thickness of each lens, and on-axis spacing between each lens, incident light can be effectively converged, the overall optical length of the imaging lens can be reduced, and the manufacturability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing. This application, through the rational combination of lenses, spacers, and lens barrels, facilitates the uniform distribution of lenses, enhances the light-gathering ability, and improves imaging quality.

[0075] In the 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 seventh lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the center to the periphery of the lens. Unlike a spherical lens, which has a constant curvature from the center to the periphery, an aspherical lens has better radius of curvature 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, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses are aspherical mirror surfaces.

[0076] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to including seven lenses. If desired, the optical imaging lens may also include other numbers of lenses. At least one spacer may be included between any two adjacent lenses.

[0077] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical imaging lens applicable to the above-described embodiments.

[0078] Example 1

[0079] The following is for reference Figure 1 Describes an optical imaging lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0080] like Figure 1 As shown, the optical imaging lens includes a lens barrel and a lens group. The lens group, from the object side to the image side, includes, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter (not shown), and imaging plane S17 (not shown).

[0081] like Figure 1 As shown, the optical imaging lens may further include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a sixth spacer element P6 and a seventh spacer element P7 arranged sequentially from the object side to the image side.

[0082] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0083] Table 1 shows the basic parameters of the optical imaging lens of Example 1, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0084]

[0085]

[0086] Table 1

[0087] Tables 2-1 and 2-2 show the basic parameters of the lens barrel and various spacer elements in the optical imaging lens of Example 1, wherein the unit of each parameter in Tables 2-1 and 2-2 is millimeters (mm).

[0088] D1s D2m d3s D4s D4m d5s d5m d6s SD52 5.30 4.42 3.72 6.50 6.54 5.90 6.56 7.54 2.73

[0089] Table 2-1

[0090] D7s D7m ds d0m EP01 EP12 EP23 EP45 10.10 9.85 3.98 10.57 0.99 0.41 0.55 0.39

[0091] Table 2-2

[0092] It should be understood that this example only exemplifies the structure and parameters of the lens barrel and each spacer element in Embodiment 1, and does not explicitly limit the specific structure and actual parameters of the lens barrel and each spacer element. In actual production, the specific structure and actual parameters of the lens barrel and each spacer element can be set in any suitable manner.

[0093] In this example, the total effective focal length f of the optical imaging lens is 5.77 mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens) is 7.27 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens is 5.38 mm, half the maximum field of view Semi-FOV of the optical imaging lens is 42.37°, and the relative F-number Fno of the optical imaging lens is 1.46.

[0094] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 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:

[0095]

[0096] Where x is the distance vector from the vertex of the aspherical surface at a height of 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 3-1 and 3-2 below give the higher-order coefficients A4, A6, A8, A14 that can be used for each aspherical mirror S1-S14 in Example 1. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0097]

[0098]

[0099] Table 3-1

[0100] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.1567E-02 -4.8760E-03 2.8041E-04 1.7180E-04 -5.3121E-05 6.5684E-06 -3.1658E-07 S2 2.5063E-01 -1.0635E-01 3.2069E-02 -6.7107E-03 9.2654E-04 -7.5894E-05 2.7926E-06 S3 1.3903E-01 -4.8804E-02 1.0822E-02 -1.2475E-03 -5.3841E-07 1.7246E-05 -1.3963E-06 S4 -1.9264E+00 1.1188E+00 -4.6212E-01 1.3237E-01 -2.4980E-02 2.7919E-03 -1.3996E-04 S5 5.7932E-01 -3.1655E-01 1.2098E-01 -3.1671E-02 5.4051E-03 -5.4065E-04 2.3972E-05 S6 -9.6024E-02 4.6855E-02 -1.6925E-02 4.3188E-03 -7.2968E-04 7.2795E-05 -3.2341E-06 S7 -1.0862E-01 4.2831E-02 -1.1939E-02 2.3027E-03 -2.9329E-04 2.2262E-05 -7.6445E-07 S8 -1.4003E-01 5.8553E-02 -1.7444E-02 3.6134E-03 -4.9462E-04 4.0220E-05 -1.4710E-06 S9 1.0947E-02 -4.1897E-03 1.0717E-03 -1.8293E-04 2.0037E-05 -1.2746E-06 3.5801E-08 S10 -4.8420E-03 1.0078E-03 -1.4696E-04 1.4689E-05 -9.5816E-07 3.6731E-08 -6.2749E-10 S11 -1.2670E-03 2.0945E-04 -2.4427E-05 1.9626E-06 -1.0330E-07 3.2045E-09 -4.4403E-11 S12 -2.3493E-04 3.1271E-05 -2.9216E-06 1.8775E-07 -7.9109E-09 1.9695E-10 -2.1983E-12 S13 -6.3014E-05 5.9381E-06 -3.9299E-07 1.7950E-08 -5.3990E-10 9.6388E-12 -7.7460E-14 S14 1.1602E-05 -8.9372E-07 4.9760E-08 -1.9438E-09 5.0454E-11 -7.8059E-13 5.4432E-15

[0101] Table 3-2

[0102] Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, representing the meridional image plane curvature and the sagittal image plane curvature. According to... Figure 2A and Figure 2BIt can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0103] Example 2

[0104] The following is for reference Figure 3 This paper describes an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0105] like Figure 3 As shown, the optical imaging lens includes a lens barrel and a lens group. The lens group, from the object side to the image side, includes, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter (not shown), and imaging plane S17 (not shown).

[0106] like Figure 3 As shown, the optical imaging lens may further include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a sixth spacer element P6 and a seventh spacer element P7 arranged sequentially from the object side to the image side.

[0107] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0108] In this example, the total effective focal length f of the optical imaging lens is 5.77 mm, the total length TTL of the optical imaging lens is 7.27 mm, half the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens is 5.38 mm, half the maximum field of view Semi-FOV of the optical imaging lens is 42.37°, and the relative F number Fno of the optical imaging lens is 1.46.

[0109] Table 4 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 5-1 and 5-2 show the basic parameters of the lens barrel and various spacer elements in the optical imaging lens of Example 2, wherein the units of each parameter in Tables 5-1 and 5-2 are millimeters (mm). Tables 6-1 and 6-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0110]

[0111] Table 4

[0112] D1s D2m d3s D4s D4m d5s d5m d6s SD52 5.40 5.50 3.70 6.24 6.29 6.02 6.33 7.71 2.73

[0113] Table 5-1

[0114] D7s D7m ds d0m EP01 EP12 EP23 EP45 10.10 9.85 3.98 10.57 1.02 0.50 0.54 0.30

[0115] Table 5-2

[0116] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.3796E-03 1.1773E-02 -3.7353E-02 7.5532E-02 -1.0120E-01 9.1085E-02 -5.4990E-02 S2 -4.3106E-02 8.4869E-02 -1.4581E-01 2.7191E-01 -4.3462E-01 5.0855E-01 -4.2272E-01 S3 -5.9726E-02 9.6794E-02 -1.3949E-01 2.2354E-01 -3.2409E-01 3.5082E-01 -2.6619E-01 S4 -2.3936E-02 -2.7994E-03 1.5007E-01 -5.7104E-01 1.3260E+00 -2.1119E+00 2.3821E+00 S5 -2.9946E-02 -1.8655E-03 -1.8721E-02 1.2652E-01 -3.7664E-01 6.5344E-01 -7.4223E-01 S6 -2.2628E-02 -4.8844E-02 1.1800E-01 -1.8315E-01 2.0884E-01 -1.9476E-01 1.5207E-01 S7 -8.9295E-03 -5.3367E-02 1.2176E-01 -1.9819E-01 2.5617E-01 -2.5935E-01 1.9698E-01 S8 -1.4898E-02 -2.1165E-02 6.0507E-02 -1.4958E-01 2.5388E-01 -2.9478E-01 2.4040E-01 S9 -2.9052E-03 -1.3243E-02 1.9039E-02 -1.7445E-02 -2.9520E-04 1.6523E-02 -1.8300E-02 S10 -7.2496E-02 1.9371E-02 2.7104E-02 -6.1639E-02 6.1649E-02 -3.8613E-02 1.6377E-02 S11 -5.7573E-02 5.7320E-03 2.5997E-02 -4.2558E-02 3.3398E-02 -1.6370E-02 5.4377E-03 S12 8.9168E-04 -6.7148E-03 1.1017E-02 -1.5514E-02 1.0841E-02 -4.5175E-03 1.2402E-03 S13 -1.8372E-01 6.0799E-02 -1.5007E-05 -1.3028E-02 7.6155E-03 -2.3636E-03 4.6774E-04 S14 -2.0017E-01 1.0631E-01 -4.6929E-02 1.6012E-02 -4.0998E-03 7.8142E-04 -1.1065E-04

[0117] Table 6-1

[0118] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.1567E-02 -4.8760E-03 2.8041E-04 1.7180E-04 -5.3121E-05 6.5684E-06 -3.1658E-07 S2 2.5063E-01 -1.0635E-01 3.2069E-02 -6.7107E-03 9.2654E-04 -7.5894E-05 2.7926E-06 S3 1.3903E-01 -4.8804E-02 1.0822E-02 -1.2475E-03 -5.3841E-07 1.7246E-05 -1.3963E-06 S4 -1.9264E+00 1.1188E+00 -4.6212E-01 1.3237E-01 -2.4980E-02 2.7919E-03 -1.3996E-04 S5 5.7932E-01 -3.1655E-01 1.2098E-01 -3.1671E-02 5.4051E-03 -5.4065E-04 2.3972E-05 S6 -9.6024E-02 4.6855E-02 -1.6925E-02 4.3188E-03 -7.2968E-04 7.2795E-05 -3.2341E-06 S7 -1.0862E-01 4.2831E-02 -1.1939E-02 2.3027E-03 -2.9329E-04 2.2262E-05 -7.6445E-07 S8 -1.4003E-01 5.8553E-02 -1.7444E-02 3.6134E-03 -4.9462E-04 4.0220E-05 -1.4710E-06 S9 1.0947E-02 -4.1897E-03 1.0717E-03 -1.8293E-04 2.0037E-05 -1.2746E-06 3.5801E-08 S10 -4.8420E-03 1.0078E-03 -1.4696E-04 1.4689E-05 -9.5816E-07 3.6731E-08 -6.2749E-10 S11 -1.2670E-03 2.0945E-04 -2.4427E-05 1.9626E-06 -1.0330E-07 3.2045E-09 -4.4403E-11 S12 -2.3493E-04 3.1271E-05 -2.9216E-06 1.8775E-07 -7.9109E-09 1.9695E-10 -2.1983E-12 S13 -6.3014E-05 5.9381E-06 -3.9299E-07 1.7950E-08 -5.3990E-10 9.6388E-12 -7.7460E-14 S14 1.1602E-05 -8.9372E-07 4.9760E-08 -1.9438E-09 5.0454E-11 -7.8059E-13 5.4432E-15

[0119] Table 6-2 Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, representing the meridional image plane curvature and the sagittal image plane curvature. According to... Figure 4A and Figure 4B It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0120] Example 3

[0121] The following is for reference Figure 5 An optical imaging lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0122] like Figure 5 As shown, the optical imaging lens includes a lens barrel and a lens group. The lens group, from the object side to the image side, includes, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter (not shown), and imaging plane S17 (not shown).

[0123] like Figure 5 As shown, the optical imaging lens may further include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a sixth spacer element P6 and a seventh spacer element P7 arranged sequentially from the object side to the image side.

[0124] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0125] In this example, the total effective focal length f of the optical imaging lens is 6.32 mm, the total length TTL of the optical imaging lens is 7.88 mm, half the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens is 5.83 mm, half the maximum field of view Semi-FOV of the optical imaging lens is 41.82°, and the relative F number Fno of the optical imaging lens is 1.46.

[0126] Table 7 shows the basic parameters of the optical imaging lens of Embodiment 3, wherein the units of radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 8-1 and 8-2 show the basic parameters of the lens barrel and various spacer elements in the optical imaging lens of Embodiment 3, wherein the units of each parameter in Tables 8-1 and 8-2 are all millimeters (mm). Tables 9-1 and 9-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 3, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0127]

[0128]

[0129] Table 7

[0130] D1s D2m d3s D4s D4m d5s d5m d6s SD52 5.17 5.27 4.04 6.95 7.08 6.78 7.59 8.59 3.05

[0131] Table 8-1

[0132] D7s D7m ds d0m EP01 EP12 EP23 EP45 10.72 10.53 4.36 11.12 1.15 0.58 0.51 0.55

[0133] Table 8-2

[0134] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.1982E-03 8.4023E-03 -2.6304E-02 5.3575E-02 -7.3798E-02 7.0816E-02 -4.8263E-02 S2 -2.3434E-02 1.5713E-02 9.6275E-03 -4.0572E-02 5.9963E-02 -5.6693E-02 3.7171E-02 S3 -3.5575E-02 3.1616E-02 -2.0382E-02 1.8108E-02 -2.0540E-02 1.8575E-02 -1.1688E-02 S4 -1.5657E-02 1.1895E-02 1.8868E-03 -1.2812E-02 1.5611E-02 -1.0704E-02 4.1777E-03 S5 -2.8675E-02 1.4719E-02 -4.3948E-02 9.1077E-02 -1.4393E-01 1.6245E-01 -1.3016E-01 S6 -4.1189E-02 3.9634E-02 -8.0499E-02 1.2735E-01 -1.5156E-01 1.2901E-01 -7.7574E-02 S7 -3.5120E-02 3.9147E-02 -8.0326E-02 1.3184E-01 -1.5394E-01 1.2374E-01 -6.7605E-02 S8 -1.9594E-02 -1.2952E-02 5.3689E-02 -1.1824E-01 1.6535E-01 -1.5780E-01 1.0663E-01 S9 -3.9805E-02 2.2467E-02 -9.3157E-03 -1.6577E-04 2.2779E-03 -1.4754E-03 4.8961E-04 S10 -1.0374E-01 4.2273E-02 -1.3200E-02 3.1298E-03 -1.2034E-03 5.3078E-04 -1.5507E-04 S11 -3.2027E-02 1.0703E-03 3.2483E-04 1.7955E-04 -2.1888E-04 6.6220E-05 -1.0016E-05 S12 4.5584E-02 -1.8544E-02 -1.7579E-03 4.7452E-03 -2.3088E-03 6.3928E-04 -1.1675E-04 S13 -1.0100E-01 4.0354E-02 -1.7234E-02 6.1322E-03 -1.4528E-03 2.3131E-04 -2.5837E-05 S14 -1.1404E-01 4.9693E-02 -1.9301E-02 5.7014E-03 -1.2167E-03 1.8772E-04 -2.1174E-05

[0135] Table 9-1

[0136]

[0137]

[0138] Table 9-2

[0139] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, representing the meridional image plane curvature and the sagittal image plane curvature. According to... Figure 6A and Figure 6B It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0140] Example 4

[0141] The following is for reference Figure 7 An optical imaging lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0142] like Figure 7 As shown, the optical imaging lens includes a lens barrel and a lens group. The lens group, from the object side to the image side, includes, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter (not shown), and imaging plane S17 (not shown).

[0143] like Figure 7 As shown, the optical imaging lens may further include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a sixth spacer element P6 and a seventh spacer element P7 arranged sequentially from the object side to the image side.

[0144] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0145] In this example, the total effective focal length f of the optical imaging lens is 6.32 mm, the total length TTL of the optical imaging lens is 7.88 mm, half the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens is 5.83 mm, half the maximum field of view Semi-FOV of the optical imaging lens is 41.82°, and the relative F number Fno of the optical imaging lens is 1.46.

[0146] Table 10 shows the basic parameters of the optical imaging lens of Embodiment 4, wherein the units of radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 11-1 and 11-2 show the basic parameters of the lens barrel and various spacer elements in the optical imaging lens of Embodiment 4, wherein the units of each parameter in Tables 11-1 and 11-2 are all millimeters (mm). Tables 12-1 and 12-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 4, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0147]

[0148] Table 10

[0149] D1s D2m d3s D4s D4m d5s d5m d6s SD52 6.16 6.30 4.03 6.98 6.93 7.02 7.49 9.14 3.05

[0150] Table 11-1

[0151] D7s D7m ds d0m EP01 EP12 EP23 EP45 10.90 10.71 4.37 11.30 1.09 0.61 0.52 0.51

[0152] Table 11-2

[0153]

[0154]

[0155] Table 12-1

[0156] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.3600E-02 -8.2866E-03 2.0680E-03 -3.5746E-04 4.0637E-05 -2.7305E-06 8.2102E-08 S2 -1.7217E-02 5.6280E-03 -1.2788E-03 1.9535E-04 -1.8832E-05 1.0086E-06 -2.1752E-08 S3 5.1318E-03 -1.5872E-03 3.4285E-04 -4.9617E-05 4.3307E-06 -1.7173E-07 0.0000E+00 S4 -5.6245E-04 -2.5105E-04 1.3685E-04 -2.6080E-05 1.8550E-06 0.0000E+00 0.0000E+00 S5 7.3892E-02 -2.9457E-02 8.0571E-03 -1.4390E-03 1.5109E-04 -7.0712E-06 0.0000E+00 S6 3.2962E-02 -9.8498E-03 2.0295E-03 -2.7506E-04 2.2111E-05 -8.0014E-07 0.0000E+00 S7 2.4898E-02 -6.0142E-03 8.7374E-04 -5.3097E-05 -3.9164E-06 8.5747E-07 -4.1609E-08 S8 -5.1858E-02 1.8216E-02 -4.5799E-03 8.0365E-04 -9.3452E-05 6.4693E-06 -2.0174E-07 S9 -5.9259E-05 -1.8461E-05 9.8585E-06 -2.0768E-06 2.4050E-07 -1.5000E-08 3.9466E-10 S10 2.8550E-05 -3.3467E-06 2.4362E-07 -1.0058E-08 1.8008E-10 0.0000E+00 0.0000E+00 S11 8.8463E-07 -4.7552E-08 1.5198E-09 -2.6041E-11 1.7610E-13 0.0000E+00 0.0000E+00 S12 1.4825E-05 -1.3356E-06 8.5368E-08 -3.7937E-09 1.1162E-10 -1.9561E-12 1.5461E-14 S13 2.0859E-06 -1.2327E-07 5.3088E-09 -1.6269E-10 3.3667E-12 -4.2203E-14 2.4203E-16 S14 1.7569E-06 -1.0694E-07 4.7095E-09 -1.4577E-10 3.0030E-12 -3.6929E-14 2.0490E-16

[0157] Table 12-2

[0158] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, representing the meridional image plane curvature and the sagittal image plane curvature. According to... Figure 8A and Figure 8B It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0159] Example 5

[0160] The following is for reference Figure 9 An optical imaging lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0161] like Figure 9 As shown, the optical imaging lens includes a lens barrel and a lens group. The lens group, from the object side to the image side, includes, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter (not shown), and imaging plane S17 (not shown).

[0162] like Figure 9 As shown, the optical imaging lens may further include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a sixth spacer element P6 and a seventh spacer element P7 arranged sequentially from the object side to the image side.

[0163] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. A filter (not shown) has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0164] In this example, the total effective focal length f of the optical imaging lens is 5.46 mm, the total length TTL of the optical imaging lens is 6.95 mm, half the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens is 5.32 mm, half the maximum field of view Semi-FOV of the optical imaging lens is 43.54°, and the relative F number Fno of the optical imaging lens is 1.50.

[0165] Table 13 shows the basic parameters of the optical imaging lens of Embodiment 5, wherein the units of radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 14-1 and 14-2 show the basic parameters of the lens barrel and various spacer elements in the optical imaging lens of Embodiment 5, wherein the units of each parameter in Tables 14-1 and 14-2 are millimeters (mm). Tables 15-1 and 15-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 5, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0166]

[0167] Table 13

[0168] D1s D2m d3s D4s D4m d5s d5m d6s SD52 5.00 4.11 3.54 5.94 6.08 5.93 6.58 7.74 2.75

[0169] Table 14-1

[0170] D7s D7m ds d0m EP01 EP12 EP23 EP45 10.06 9.86 3.65 10.42 0.82 0.48 0.53 0.41

[0171] Table 14-2

[0172] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.2436E-03 3.2330E-02 -1.2077E-01 3.0007E-01 -5.1551E-01 6.2846E-01 -5.5297E-01 S2 -3.8937E-02 4.4313E-02 -3.3599E-02 1.0616E-02 2.3091E-02 -6.1541E-02 8.4242E-02 S3 -5.3517E-02 6.5897E-02 -9.7803E-02 2.2881E-01 -4.7966E-01 7.2212E-01 -7.6641E-01 S4 -1.8091E-02 -1.6053E-02 2.3074E-01 -9.1857E-01 2.3379E+00 -4.1282E+00 5.1989E+00 S5 -3.6967E-02 1.3544E-02 -1.3360E-01 5.8253E-01 -1.5889E+00 2.9037E+00 -3.7108E+00 S6 -1.4434E-02 -6.9903E-02 1.4758E-01 -2.0670E-01 2.0132E-01 -1.8288E-01 1.9942E-01 S7 7.3435E-03 -3.6083E-02 -2.0930E-02 2.5025E-01 -6.0304E-01 8.2247E-01 -7.3225E-01 S8 -1.1144E-02 -2.4895E-02 7.7747E-02 -1.7358E-01 2.5958E-01 -2.6953E-01 2.0025E-01 S9 -4.2649E-02 4.4917E-02 -3.1588E-02 5.3854E-03 8.9667E-03 -7.9103E-03 1.9661E-03 S10 -2.4496E-01 2.2012E-01 -1.5833E-01 8.6605E-02 -3.3980E-02 8.2108E-03 -5.6060E-04 S11 -1.4038E-01 1.0277E-01 -7.6305E-02 4.3169E-02 -1.8348E-02 5.7131E-03 -1.2879E-03 S12 8.0480E-02 -7.2676E-02 3.8369E-02 -1.5443E-02 4.6486E-03 -1.0431E-03 1.7660E-04 S13 -1.3811E-01 6.0293E-02 -2.0586E-02 5.3732E-03 -9.8638E-04 1.2516E-04 -1.1022E-05 S14 -1.5650E-01 7.8127E-02 -3.2699E-02 1.0401E-02 -2.4529E-03 4.2646E-04 -5.4769E-05

[0173] Table 15-1

[0174] Face number A18 A20 A22 A24 A26 A28 A30 S1 3.5401E-01 -1.6473E-01 5.5059E-02 -1.2864E-02 1.9927E-03 -1.8376E-04 7.6312E-06 S2 -7.5565E-02 4.6293E-02 -1.9461E-02 5.5191E-03 -1.0085E-03 1.0714E-04 -5.0254E-06 S3 5.7913E-01 -3.1292E-01 1.2002E-01 -3.1914E-02 5.5967E-03 -5.8260E-04 2.7295E-05 S4 -4.7230E+00 3.0966E+00 -1.4492E+00 4.7147E-01 -1.0119E-01 1.2872E-02 -7.3459E-04 S5 3.3848E+00 -2.2161E+00 1.0332E+00 -3.3466E-01 7.1560E-02 -9.0794E-03 5.1749E-04 S6 -2.0447E-01 1.5357E-01 -7.8555E-02 2.6672E-02 -5.7647E-03 7.1923E-04 -3.9484E-05 S7 4.4938E-01 -1.9431E-01 5.9230E-02 -1.2474E-02 1.7285E-03 -1.4181E-04 5.2174E-06 S8 -1.0811E-01 4.2557E-02 -1.2108E-02 2.4278E-03 -3.2579E-04 2.6282E-05 -9.6428E-07 S9 9.1436E-04 -9.0919E-04 3.4675E-04 -7.5988E-05 9.9852E-06 -7.3329E-07 2.3187E-08 S10 -3.6896E-04 1.5378E-04 -3.0859E-05 3.7555E-06 -2.8116E-07 1.1949E-08 -2.2113E-10 S11 2.0839E-04 -2.3835E-05 1.8716E-06 -9.5449E-08 2.8162E-09 -3.4658E-11 -8.3640E-14 S12 -2.2840E-05 2.2686E-06 -1.7172E-07 9.6341E-09 -3.7742E-10 9.1698E-12 -1.0327E-13 S13 6.7259E-07 -2.7943E-08 7.5473E-10 -1.1954E-11 8.4220E-14 0.0000E+00 0.0000E+00 S14 5.2022E-06 -3.6373E-07 1.8456E-08 -6.6018E-10 1.5768E-11 -2.2549E-13 1.4592E-15

[0175] Table 15-2

[0176] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, representing the meridional image plane curvature and the sagittal image plane curvature. According to... Figure 10A and Figure 10B It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0177] Example 6

[0178] The following is for reference Figure 11 An optical imaging lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0179] like Figure 11 As shown, the optical imaging lens includes a lens barrel and a lens group. The lens group, from the object side to the image side, includes, in sequence: aperture stop STO (not shown), first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter (not shown), and imaging plane S17 (not shown).

[0180] like Figure 11 As shown, the optical imaging lens may further include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a sixth spacer element P6 and a seventh spacer element P7 arranged sequentially from the object side to the image side.

[0181] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0182] In this example, the total effective focal length f of the optical imaging lens is 5.46 mm, the total length TTL of the optical imaging lens is 6.95 mm, half the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens is 5.32 mm, half the maximum field of view Semi-FOV of the optical imaging lens is 43.54°, and the relative F number Fno of the optical imaging lens is 1.50.

[0183] Table 16 shows the basic parameters of the optical imaging lens of Embodiment 6, wherein the units of radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 17-1 and 17-2 show the basic parameters of the lens barrel and various spacer elements in the optical imaging lens of Embodiment 6, wherein the units of each parameter in Tables 17-1 and 17-2 are all millimeters (mm). Tables 18-1 and 18-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 6, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0184]

[0185]

[0186] Table 16

[0187] D1s D2m d3s D4s D4m d5s d5m d6s SD52 5.10 5.40 3.45 5.42 6.18 6.11 6.49 8.30 2.75

[0188] Table 17-1

[0189] D7s D7m ds d0m EP01 EP12 EP23 EP45 10.16 9.96 3.65 10.52 0.77 0.54 0.48 0.38

[0190] Table 17-2

[0191] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.2436E-03 3.2330E-02 -1.2077E-01 3.0007E-01 -5.1551E-01 6.2846E-01 -5.5297E-01 S2 -3.8937E-02 4.4313E-02 -3.3599E-02 1.0616E-02 2.3091E-02 -6.1541E-02 8.4242E-02 S3 -5.3517E-02 6.5897E-02 -9.7803E-02 2.2881E-01 -4.7966E-01 7.2212E-01 -7.6641E-01 S4 -1.8091E-02 -1.6053E-02 2.3074E-01 -9.1857E-01 2.3379E+00 -4.1282E+00 5.1989E+00 S5 -3.6967E-02 1.3544E-02 -1.3360E-01 5.8253E-01 -1.5889E+00 2.9037E+00 -3.7108E+00 S6 -1.4434E-02 -6.9903E-02 1.4758E-01 -2.0670E-01 2.0132E-01 -1.8288E-01 1.9942E-01 S7 7.3435E-03 -3.6083E-02 -2.0930E-02 2.5025E-01 -6.0304E-01 8.2247E-01 -7.3225E-01 S8 -1.1144E-02 -2.4895E-02 7.7747E-02 -1.7358E-01 2.5958E-01 -2.6953E-01 2.0025E-01 S9 -4.2649E-02 4.4917E-02 -3.1588E-02 5.3854E-03 8.9667E-03 -7.9103E-03 1.9661E-03 S10 -2.4496E-01 2.2012E-01 -1.5833E-01 8.6605E-02 -3.3980E-02 8.2108E-03 -5.6060E-04 S11 -1.4038E-01 1.0277E-01 -7.6305E-02 4.3169E-02 -1.8348E-02 5.7131E-03 -1.2879E-03 S12 8.0480E-02 -7.2676E-02 3.8369E-02 -1.5443E-02 4.6486E-03 -1.0431E-03 1.7660E-04 S13 -1.3811E-01 6.0293E-02 -2.0586E-02 5.3732E-03 -9.8638E-04 1.2516E-04 -1.1022E-05 S14 -1.5650E-01 7.8127E-02 -3.2699E-02 1.0401E-02 -2.4529E-03 4.2646E-04 -5.4769E-05

[0192] Table 18-1

[0193]

[0194]

[0195] Table 18-2

[0196] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, representing the meridional image plane curvature and the sagittal image plane curvature. According to... Figure 12A and Figure 12B It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0197] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 19.

[0198] Conditional / Example 1 2 3 4 5 6 D1s / (EP01-EP12)+D2m / CT2 24.34 29.25 26.92 34.15 29.45 41.43 |d0m / R1|+EP23 / (CT3-CT2) 14.21 14.06 15.95 16.44 19.04 17.65 R6 / CT3+D4s / CT4 27.47 27.11 32.73 32.77 37.98 37.27 (|D7m / R14|-|d6s / R10|)×Fno 6.75 6.71 3.86 3.79 4.25 4.09 D4m / EP45+ds / T45 23.99 28.18 19.55 20.28 22.33 23.77 d5s / CT4 8.16 8.32 9.79 10.14 8.16 8.41 R2 / (CT6-T56)+|D7s / R10| 60.07 60.07 45.14 45.18 32.74 32.77 d5s / T56+d3s / CT3 39.24 39.76 42.93 43.99 57.90 59.02 d5m×R10 / (SD52×R11) 6.82 6.58 4.62 4.56 5.15 5.08

[0199] Table 19

[0200] 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.

[0201] 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, comprising a lens barrel and a lens assembly mounted within the lens barrel, the lens assembly comprising, sequentially 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, a sixth lens, and a seventh lens, each having optical power, characterized in that, The outer diameter of the seventh lens is greater than the outer diameter of any one of the first to sixth lenses; The first lens, the fourth lens, and the sixth lens have positive optical power; The second lens, the third lens, the fifth lens, and the seventh lens have negative optical power; The object-side surfaces of the first lens, the sixth lens, and the seventh lens are all convex, and the image-side surfaces of the fifth lens are all concave. The optical imaging lens has seven lenses with optical power. as well as The optical imaging lens also includes: A sixth spacer element located between the sixth lens and the seventh lens; and The seventh spacer element is located on the image-side surface of the seventh lens; The optical imaging lens satisfies: 3.79≤(|D7m / R14|-|d6s / R10|)×Fno≤4.25 and 32.74≤R2 / (CT6-T56)+|D7s / R10|≤45.18, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, D7m is the outer diameter of the image-side surface of the seventh spacer element, D7s is the outer diameter of the object-side surface of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, and R2 is the radius of curvature of the image-side surface of the first lens.

2. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens also includes: A second spacer element located between the second lens and the third lens; and A third spacer element located between the third lens and the fourth lens; The optical imaging lens satisfies: 15.95≤|d0m / R1|+EP23 / (CT3-CT2)≤19.04, where d0m is the inner diameter of the image-side end of the lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, EP23 is the distance between the image-side surface of the second spacer element and the object-side surface of the third spacer element in the direction parallel to the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

3. The optical imaging lens according to claim 1, characterized in that, The optical imaging lens further includes a fourth spacer element located between the fourth lens and the fifth lens. The optical imaging lens satisfies: 32.73≤R6 / CT3+D4s / CT4≤37.98, where R6 is the radius of curvature of the image side of the third lens, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and D4s is the outer diameter of the object side of the fourth spacer element.

4. The optical imaging lens according to claim 3, characterized in that, The optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens. The optical imaging lens satisfies: 19.55≤D4m / EP45+ds / T45≤23.77, where D4m is the outer diameter of the image-side surface of the fourth spacer element, EP45 is the spacing distance between the image-side surface of the fourth spacer element and the object-side surface of the fifth spacer element in the direction parallel to the optical axis, ds is the inner diameter of the opening at the object-side end of the lens barrel, and T45 is the spacing distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens on the optical axis.

5. The optical imaging lens according to claim 4, characterized in that, The optical imaging lens satisfies: 8.16≤d5s / CT4≤10.14, where d5s is the inner diameter of the object side of the fifth spacer element and CT4 is the center thickness of the fourth lens on the optical axis.

6. The optical imaging lens according to claim 2, characterized in that, The optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens. The optical imaging lens satisfies: 42.93≤d5s / T56+d3s / CT3≤59.02, where T56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, d3s is the inner diameter of the object side of the third spacer element, d5s is the inner diameter of the object side of the fifth spacer element, and CT3 is the center thickness of the third lens on the optical axis.

7. The optical imaging lens according to claim 5 or 6, characterized in that, The optical imaging lens satisfies: 4.56≤d5m×R10 / (SD52×R11)≤5.15, where d5m is the inner diameter of the image-side surface of the fifth spacer element, R11 is the radius of curvature of the object-side surface of the sixth lens, and SD52 is the maximum effective radius of the image-side surface of the fifth lens.

8. The optical imaging lens according to any one of claims 1-6, characterized in that, The object-side surface of the fourth lens is convex, and the image-side surface is also convex.

9. An optical imaging lens, comprising a lens barrel and a lens group assembled within the lens barrel, the lens group comprising, sequentially 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, a sixth lens, and a seventh lens, each having optical power, characterized in that, The first lens, the fourth lens, and the sixth lens have positive optical power; The second lens, the third lens, the fifth lens, and the seventh lens have negative optical power; The object-side surfaces of the first lens, the sixth lens, and the seventh lens are all convex, and the image-side surfaces of the fifth lens are all concave. The optical imaging lens has seven lenses with optical power. The optical imaging lens also includes: A sixth spacer element located between the sixth lens and the seventh lens; and The seventh spacer element is located on the image-side surface of the seventh lens; The optical imaging lens satisfies: 3.79≤(|D7m / R14|-|d6s / R10|)×Fno≤4.25 and 32.74≤R2 / (CT6-T56)+|D7s / R10|≤45.18, where R10 is the radius of curvature of the image-side surface of the fifth lens, R14 is the radius of curvature of the image-side surface of the seventh lens, Fno is the relative F-number of the optical imaging lens, d6s is the inner diameter of the object-side surface of the sixth spacer element, D7m is the outer diameter of the image-side surface of the seventh spacer element, D7s is the outer diameter of the object-side surface of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, and R2 is the radius of curvature of the image-side surface of the first lens.

10. The optical imaging lens according to claim 9, characterized in that, The optical imaging lens also includes: A second spacer element located between the second lens and the third lens; and A third spacer element located between the third lens and the fourth lens; The optical imaging lens satisfies: 15.95≤|d0m / R1|+EP23 / (CT3-CT2)≤19.04, where d0m is the inner diameter of the image-side end of the lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, EP23 is the distance between the image-side surface of the second spacer element and the object-side surface of the third spacer element in the direction parallel to the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

11. The optical imaging lens according to claim 9, characterized in that, The optical imaging lens further includes a fourth spacer element located between the fourth lens and the fifth lens. The optical imaging lens satisfies: 32.73≤R6 / CT3+D4s / CT4≤37.98, where R6 is the radius of curvature of the image side of the third lens, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and D4s is the outer diameter of the object side of the fourth spacer element.

12. The optical imaging lens according to claim 11, characterized in that, The optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens. The optical imaging lens satisfies: 19.55≤D4m / EP45+ds / T45≤23.77, where D4m is the outer diameter of the image-side surface of the fourth spacer element, EP45 is the spacing distance between the image-side surface of the fourth spacer element and the object-side surface of the fifth spacer element in the direction parallel to the optical axis, ds is the inner diameter of the opening at the object-side end of the lens barrel, and T45 is the spacing distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens on the optical axis.

13. The optical imaging lens according to claim 12, characterized in that, The optical imaging lens satisfies: 8.16≤d5s / CT4≤10.14, where d5s is the inner diameter of the object side of the fifth spacer element and CT4 is the center thickness of the fourth lens on the optical axis.

14. The optical imaging lens according to claim 10, characterized in that, The optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens. The optical imaging lens satisfies: 42.93≤d5s / T56+d3s / CT3≤59.02, where T56 is the distance between the image side of the fifth lens and the object side of the sixth lens on the optical axis, d3s is the inner diameter of the object side of the third spacer element, d5s is the inner diameter of the object side of the fifth spacer element, and CT3 is the center thickness of the third lens on the optical axis.

15. The optical imaging lens according to claim 12 or 14, characterized in that, The optical imaging lens satisfies: 4.56≤d5m×R10 / (SD52×R11)≤5.15, where d5m is the inner diameter of the image-side surface of the fifth spacer element, R11 is the radius of curvature of the object-side surface of the sixth lens, and SD52 is the maximum effective radius of the image-side surface of the fifth lens.

16. The optical imaging lens according to any one of claims 9-14, characterized in that, The object-side surface of the fourth lens is convex, and the image-side surface is also convex.

17. An optical imaging lens, comprising a lens barrel and a lens group mounted within the lens barrel, the lens group comprising, sequentially 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, a sixth lens, and a seventh lens, each having optical power, characterized in that, The object-side surface of the first lens is convex, and the image-side surface is concave. The object-side surface of the second lens is convex, and the image-side surface is concave. The object-side surface of the third lens is convex, and the image-side surface is concave. The object-side surface of the fourth lens is convex, and the image-side surface is also convex. The object-side surface of the fifth lens is convex, and the image-side surface is concave. The object-side surface of the sixth lens is convex, and the image-side surface is concave; and The object-side surface of the seventh lens is convex, and the image-side surface is concave. The first lens, the fourth lens, and the sixth lens have positive optical power; The second lens, the third lens, the fifth lens, and the seventh lens have negative optical power; The optical imaging lens has seven lenses with optical power. The optical imaging lens also includes a seventh spacer element located on the image side of the seventh lens; The optical imaging lens satisfies: 32.74≤R2 / (CT6-T56)+|D7s / R10|≤60.07, where D7s is the outer diameter of the object side of the seventh spacer element, CT6 is the center thickness of the sixth lens on the optical axis, R2 is the radius of curvature of the image side of the first lens, and R10 is the radius of curvature of the image side of the fifth lens.

18. The optical imaging lens according to claim 17, characterized in that, The optical imaging lens also includes: A second spacer element located between the second lens and the third lens; and The third spacer element is located between the third lens and the fourth lens. The optical imaging lens satisfies: 14.06≤|d0m / R1|+EP23 / (CT3-CT2)≤19.04, where d0m is the inner diameter of the image-side end of the lens barrel, R1 is the radius of curvature of the object-side surface of the first lens, EP23 is the distance between the image-side surface of the second spacer element and the object-side surface of the third spacer element in the direction parallel to the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

19. The optical imaging lens according to claim 17, characterized in that, The optical imaging lens further includes a fourth spacer element located between the fourth lens and the fifth lens. The optical imaging lens satisfies: 27.11≤R6 / CT3+D4s / CT4≤37.98, where R6 is the radius of curvature of the image side of the third lens, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and D4s is the outer diameter of the object side of the fourth spacer element.

20. The optical imaging lens according to claim 19, characterized in that, The optical imaging lens further includes a fifth spacer element located between the fifth lens and the sixth lens. The optical imaging lens satisfies: 19.55≤D4m / EP45+ds / T45≤28.18, where D4m is the outer diameter of the image-side surface of the fourth spacer element, EP45 is the spacing distance between the image-side surface of the fourth spacer element and the object-side surface of the fifth spacer element in the direction parallel to the optical axis, ds is the inner diameter of the opening at the object-side end of the lens barrel, and T45 is the spacing distance between the image-side surface of the fourth lens and the object-side surface of the fifth lens on the optical axis.

21. The optical imaging lens according to claim 20, characterized in that, The optical imaging lens satisfies: 8.16≤d5s / CT4≤10.14, where d5s is the inner diameter of the object side of the fifth spacer element and CT4 is the center thickness of the fourth lens on the optical axis.

22. The optical imaging lens according to claim 20, characterized in that, The optical imaging lens satisfies: 4.56≤d5m×R10 / (SD52×R11)≤6.82, where d5m is the inner diameter of the image-side surface of the fifth spacer element, R11 is the radius of curvature of the object-side surface of the sixth lens, and SD52 is the maximum effective radius of the image-side surface of the fifth lens.

Images