Optical imaging lens

Abstract

The application discloses an optical imaging system, which comprises: a lens set, including a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens and a fifth lens arranged in sequence from an object side to an image side along an optical axis; a plurality of isolators, including a third isolator arranged on the image side of the third lens and at least partially in contact with the third lens, and a fourth isolator arranged on the image side of the fourth lens and at least partially in contact with the fourth lens; and a lens barrel for accommodating the lens set and the plurality of isolators; the radius of curvature R7 of the object side surface of the fourth lens, the inner diameter d3s of the object side surface of the third isolator, the inner diameter d4s of the object side surface of the fourth isolator, and the air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: 10<|R7 / d3s|+d4s / T45<31.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on February 9, 2023, entitled "Optical Imaging Lens" and with application number 202310110631.8. Technical Field

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

[0004] In recent years, with the rapid development of technology, mobile phones have gained an increasingly important place in society. Besides the increasing demand for mobile phones, people are also raising their expectations for their functionality and quality. Among these, the camera function is one of the most frequently used, and the front-facing camera is being used more frequently in daily life. People are demanding that front-facing cameras not only have an attractive appearance but also high quality.

[0005] Five-element, small-head ultra-wide-angle camera lenses are commonly used in the front-facing cameras of mobile phones. Due to their ultra-wide-angle design, they have a wider field of view, which is beneficial for close-up shooting with the front camera and can also effectively conceal the lens to enhance the phone's appearance. However, combining the small head size with the ultra-wide-angle characteristics of a five-element camera lens is quite challenging. On the one hand, the small head size, coupled with the large effective diameter of the first lens, results in limited space for structural adjustments at the front of the lens. On the other hand, the wide field of view of an ultra-wide-angle lens means that stray light appears at more angles and is more severe, which can seriously affect the lens quality. Summary of the Invention

[0006] This application provides an optical imaging lens comprising: a lens group including a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens, and a fifth lens arranged sequentially along the optical axis from the object side to the image side; a plurality of spacers including a third spacer disposed on the image side of the third lens and in at least partial contact with the third lens, and a fourth spacer disposed on the image side of the fourth lens and in at least partial contact with the fourth lens; and a lens barrel for accommodating the lens group and the plurality of spacers; wherein the radius of curvature R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third spacer, the inner diameter d4s of the object side of the fourth spacer, and the air gap T45 between the fourth and fifth lenses on the optical axis satisfy: 10 < |R7 / d3s| + d4s / T45 < 31.

[0007] This application provides an optical imaging lens comprising: a lens group including a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens, and a fifth lens arranged sequentially along the optical axis from the object side to the image side; a plurality of spacers, including a second spacer disposed on the image side of the second lens and at least partially in contact with the second lens; and a lens barrel for accommodating the lens group and the plurality of spacers; wherein the radius of curvature R4 of the image side of the second lens and the radius of curvature R7 of the object side of the fourth lens satisfy: R4 / R7<0; and the outer diameter D2s of the object side of the second spacer, the maximum thickness CP2 of the second spacer along the optical axis, the effective focal length f1 of the first lens, and the effective focal length f2 of the second lens satisfy: 8 <D2s / CP2 / 2+|f2 / f1|<120。

[0008] This application provides an optical imaging lens comprising: a lens group including a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens, and a fifth lens arranged sequentially along the optical axis from the object side to the image side; a plurality of spacers including a first spacer placed on the image side of the first lens and in at least partial contact with the first lens, a second spacer placed on the image side of the second lens and in at least partial contact with the second lens, a third spacer placed on the image side of the third lens and in at least partial contact with the third lens, and a fourth spacer placed on the image side of the fourth lens and in at least partial contact with the fourth lens; and a lens barrel for accommodating the lens group and the plurality of spacers; wherein the inner diameter d1s of the object side of the first spacer, the inner diameter d2s of the object side of the second spacer, the radius of curvature R2 of the image side of the first lens, and the radius of curvature R3 of the object side of the second lens satisfy: 11 < (d2s × R3) / (d1s × R2) < 30.

[0009] In one embodiment, the inner diameter d2s of the object side of the second isolator, the inner diameter d3s of the object side of the third isolator, the maximum thickness CP2 of the second isolator along the optical axis, and the air gap T23 between the second and third lenses on the optical axis satisfy: 17 <d2s / CP2+d3s / T23<160。

[0010] In one embodiment, the radius of curvature R2 of the image-side surface of the first lens, the air gap T12 between the first and second lenses on the optical axis, the outer diameter D4s of the object-side surface of the fourth isolator, and the radius of curvature R9 of the object-side surface of the fifth lens satisfy: 10 <R2 / T12+D4s / R9<35。

[0011] In one embodiment, the distance EP34 between the image-side surface of the third isolator and the object-side surface of the fourth isolator on the optical axis, the air gap T45 between the fourth and fifth lenses on the optical axis, and the outer diameter D4m of the image-side surface of the fourth isolator and the radius of curvature R10 of the image-side surface of the fifth lens satisfy: 5 <EP34 / T45+D4m / R10<15。

[0012] In one embodiment, the inner diameter d1s of the object side surface of the first isolator, the air gap T12 between the first and second lenses on the optical axis, the distance EP01 from the object side end of the lens barrel to the object side surface of the first isolator along the optical axis, and the center thickness CT1 of the first lens on the optical axis satisfy: 6 <d1s / T12+EP01 / CT1<8。

[0013] In one embodiment, the radius of curvature R6 of the image side of the third lens, the air gap T23 between the second and third lenses on the optical axis, the outer diameter D4s of the object side of the fourth isolator, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 25 < |R6 / T23| + D4s / CT4 < 40.

[0014] In one embodiment, the effective focal length f1 of the first lens, the inner diameter d2s of the object-side surface of the second isolator, the outer diameter D2m of the image-side surface of the second isolator, and the center thickness CT2 of the second lens on the optical axis satisfy: 12 <f1 / d2s+D2m / CT2<16。

[0015] In one embodiment, the inner diameter d2s of the object side of the second isolator, the outer diameter D2s of the object side of the second isolator, the center thickness CT1 of the first lens on the optical axis, and the air gap T23 between the second and third lenses on the optical axis satisfy: 15 <d2s / CT1+D2s / T23<20。

[0016] In one embodiment, the radius of curvature R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third isolator, the inner diameter d4s of the object side of the fourth isolator, and the air gap T45 between the fourth and fifth lenses on the optical axis satisfy: 10 < |R7 / d3s| + d4s / T45 < 31.

[0017] In one embodiment, the outer diameter D2s of the object side of the second isolator, the maximum thickness CP2 of the second isolator along the optical axis, the effective focal length f1 of the first lens, and the effective focal length f2 of the second lens satisfy: 8 <D2s / CP2 / 2+|f2 / f1|<120。

[0018] In one embodiment, the radius of curvature R9 of the object side of the fifth lens and the radius of curvature R10 of the image side of the fifth lens satisfy: R9 / R10>0.

[0019] In one embodiment, the radius of curvature R4 of the image side surface of the second lens and the radius of curvature R7 of the object side surface of the fourth lens satisfy: R4 / R7 < 0.

[0020] In one embodiment, the inner diameter d0m of the image side end of the lens barrel, the outer diameter D4m of the image side surface of the fourth spacer, and the air gap T45 between the fourth lens and the fifth lens on the optical axis satisfy: 0 < (d0m - D4m) / T45 < 4.

[0021] The five-piece optical imaging lens provided by the present application can satisfy 10 < |R7 / d3s| + d4s / T45 < 31, which can effectively control the position of the fourth lens on the optical axis. The fourth lens is closer to the third lens than to the fifth lens on the optical axis. This is related to the surface shape of the lens itself and is also to ensure the molding feasibility of the third lens and the fourth lens. At the same time, by adjusting the inner apertures of the third spacer and the fourth spacer, stray light outside the edge field of view can be blocked, which helps to improve the imaging quality.

[0022] The five-piece optical imaging lens provided by the present application can satisfy R4 / R7 < 0, that is, the radius of curvature of the image side surface of the second lens and the radius of curvature of the object side surface of the fourth lens have opposite signs. The light rays show a trend of first expanding and then contracting after passing through the second lens and the fourth lens. The light rays expand and increase the image plane in the second lens, and the light rays need to start contracting in the fourth lens to ensure that all light rays converge to the image plane according to the design requirements, thereby ensuring the imaging quality of the picture.

[0023] The five-piece optical imaging lens provided by the present application can satisfy 8 < D2s / CP2 / 2 + |f2 / f1| < 120, which is beneficial to ensuring a reasonable path range of light rays between the first lens and the second lens. The outer diameter of the object side surface of the second spacer is the same as the outer diameter of the second lens. The thickness of the second spacer can effectively adjust the gap distance between the second lens and the subsequent lens. By controlling the effective focal length of the first lens, the effective focal length of the second lens, and the thickness of the second spacer, the main value of the light rays can be effectively controlled, and the image quality performance can be improved.

[0024] The five-element optical imaging lens provided in this application includes a first lens with positive optical power, a second lens with negative optical power, and a third lens with positive optical power. This optical power setting is beneficial for adjusting the front-end light collection to achieve wide-angle characteristics, and also for adjusting the light path, balancing aberrations, and obtaining better image quality. The five-element optical imaging lens provided in this application combines a small head size with a wide angle. Given the small head size and the large effective diameter of the first lens, resulting in limited structural adjustment space at the first lens, the relationship between the inner apertures of the first and second isolators and the radii of curvature of the first and second lenses can be adjusted by controlling the condition 11<(d2s×R3) / (d1s×R2)<30. This ensures wide-angle characteristics while blocking stray light and improving image quality. Furthermore, controlling R2 and R3 helps to mitigate the slight deformation caused by stress between the image-side surface of the first lens, the object-side surface of the second lens, and the lens barrel, optimizing the MTF under different fields of view and improving image quality. At least one isolator is provided between adjacent lenses to effectively prevent stray light from penetrating between adjacent lenses and to improve assembly stability. Attached Figure Description

[0025] 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:

[0026] Figure 1 A structural layout diagram and schematic diagram of some parameters of an optical imaging lens according to this application are shown;

[0027] Figures 2A to 2C A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0028] Figures 3A to 3C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 1 of this application are shown respectively.

[0029] Figures 4A to 4C A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0030] Figures 5A to 5C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 2 of this application are shown respectively.

[0031] Figures 6A to 6C A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown; and

[0032] Figures 7A to 7C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens according to Embodiment 3 of this application are shown respectively. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0036] In this article, curvature or paraxial curvature refers to the curvature of the region near the optical axis. If the curvature of a lens surface is positive and its location is not defined, it means that the curvature of the lens surface is positive at least in the paraxial region; if the curvature of a lens surface is negative and its location is not defined, it means that the curvature of the lens surface is negative 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.

[0037] 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.

[0038] 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.

[0039] 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 lens to the fifth lens), lens barrel, and spacer in the various embodiments of this application can be arbitrarily combined, and it is not limited to the lens group in one embodiment being combined only with the lens barrel, spacer, etc. of that embodiment.

[0040] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Figure 1 This diagram illustrates the structural layout and schematic diagram of some parameters of an optical imaging lens according to this application. Those skilled in the art will understand that some parameters frequently used in the art, such as the center thickness CT1 of the first lens on the optical axis, are not shown. Figure 1 As shown in the figure, Figure 1 The following are merely illustrative examples of partial parameters of the lens barrel and insulating component of an optical imaging lens according to this application, to facilitate a better understanding of the invention. Figure 1 As shown, EP34 represents the distance along the optical axis between the image-side surface of the third isolator and the object-side surface of the fourth isolator; EP01 represents the distance along the optical axis from the object-side end of the lens barrel to the object-side surface of the first isolator; CP2 represents the maximum thickness of the second isolator along the optical axis; D2m represents the outer diameter of the image-side surface of the second isolator; d3s represents the inner diameter of the object-side surface of the third isolator; d2s represents the inner diameter of the object-side surface of the second isolator; d1s represents the inner diameter of the object-side surface of the first isolator; D4s represents the outer diameter of the object-side surface of the fourth isolator; d4s represents the inner diameter of the object-side surface of the fourth isolator; and D4m represents the outer diameter of the image-side surface of the fourth isolator.

[0041] An optical imaging lens according to an exemplary embodiment of this application includes a lens group and multiple isolators. 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, and a fifth lens. In some embodiments, the first lens has positive optical power, the second lens has negative optical power, and the third lens has positive optical power. By appropriately setting the optical power of the first three lenses, it is beneficial to adjust the light collection at the front end to achieve wide-angle characteristics, and also beneficial to adjust the path of light rays, balance aberrations, and obtain better image quality.

[0042] In an exemplary embodiment, the plurality of isolators may include a first isolator placed on the image side of the first lens and at least partially in contact with the first lens, a second isolator placed on the image side of the second lens and at least partially in contact with the second lens, a third isolator placed on the image side of the third lens and at least partially in contact with the third lens, and a fourth isolator placed on the image side of the fourth lens and at least partially in contact with the fourth lens. Providing at least one isolator between adjacent lenses helps to intercept the light path, prevent stray light from penetrating between adjacent lenses, and buffer the common bearing portion between adjacent lenses, ensuring uniform force distribution. This prevents lens breakage due to concentrated force, thus affecting lens quality. Furthermore, the optical imaging lens of this application combines the characteristics of a small head and a wide angle. When the head size is small and the effective diameter of the first lens is large, resulting in a small adjustment space at the first lens, by controlling the condition 11<(d2s×R3) / (d1s×R2)<30, where d1s is the inner diameter of the object side of the first isolator, d2s is the inner diameter of the object side of the second isolator, R2 is the radius of curvature of the image side of the first lens, and R3 is the radius of curvature of the object side of the second lens, that is, by adjusting the relationship between the inner diameter of the first and second isolators and the radius of curvature of the first and second lenses, the wide-angle characteristics can be guaranteed while blocking stray light and improving the imaging quality.

[0043] It should be understood that this application does not specifically limit the number of isolators; any number of isolators may be included between any two lenses, and the entire optical imaging lens may also include any number of isolators. Isolators help the optical imaging lens intercept excess reflective light paths, reducing stray light and ghosting. Adding auxiliary support between the isolators and the lens barrel helps improve problems such as poor assembly stability and low performance yield caused by large step differences between lenses.

[0044] In an exemplary embodiment, the optical imaging lens further includes a lens barrel for housing a lens group and a plurality of spacers.

[0045] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 17 < d2s / CP2 + d3s / T23 < 160, where d2s is the inner diameter of the object side surface of the second spacer, d3s is the inner diameter of the object side surface of the third spacer, CP2 is the maximum thickness of the second spacer along the optical axis direction, and T23 is the air gap between the second lens and the third lens on the optical axis. Satisfying 17 < d2s / CP2 + d3s / T23 < 160 can effectively constrain the relationship between the inner aperture diameters of the second and third spacers, the thickness of the second spacer, and the air gap between the second and third lenses on the optical axis. While ensuring imaging, the structure can be optimized by adjusting the thickness of the spacers, and stray light can be blocked by controlling the inner aperture diameters of the second and third spacers, thereby improving the imaging quality.

[0046] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 10 < R2 / T12 + D4s / R9 < 35, where R2 is the radius of curvature of the image side surface of the first lens, T12 is the air gap between the first lens and the second lens on the optical axis, D4s is the outer diameter of the object side surface of the fourth spacer, and R9 is the radius of curvature of the object side surface of the fifth lens. Satisfying 10 < R2 / T12 + D4s / R9 < 35 is beneficial for reasonably controlling the incidence and exit of light. The first lens is the first lens for light incidence, and the fifth lens is the last lens that the light passes through. The light starts to spread from the first lens, and a reasonable curvature and air gap can effectively control the light trend. After passing through the fifth lens, the light will form an image on the image plane. Controlling the outer diameter of the fourth spacer indirectly controls the outer diameter of the effective light passing hole of the fifth lens, which is beneficial for lens molding. Reasonably setting the curvature of the fifth lens can also prevent the occurrence of the RI reverse curvature phenomenon, effectively improving the imaging quality.

[0047] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 5 < EP34 / T45 + D4m / R10 < 15, where EP34 is the distance between the third spacer and the fourth spacer on the optical axis, T45 is the air gap between the fourth lens and the fifth lens on the optical axis, D4m is the outer diameter of the image side surface of the fourth spacer, and R10 is the radius of curvature of the image side surface of the fifth lens. Satisfying 5 < EP34 / T45 + D4m / R10 < 15 can effectively control the structure between the third lens and the fourth lens. Adjusting the distance EP34 between the third spacer and the fourth spacer on the optical axis can optimize the structure of the third lens and the fourth lens, improving the molding feasibility. Controlling the air gap T45 between the fourth lens and the fifth lens on the optical axis and the radius of curvature R10 of the image side surface of the fifth lens can adjust the light direction, improve the light convergence situation, and enhance the imaging quality.

[0048] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 6 < d1s / T12 + EP01 / CT1 < 8, where d1s is the inner diameter of the object side surface of the first spacer, T12 is the air gap between the first lens and the second lens on the optical axis, EP01 is the distance from the object side end of the lens barrel to the object side surface of the first spacer along the optical axis, and CT1 is the central thickness of the first lens on the optical axis. This lens is a wide-angle lens, and the aperture is placed in front of the exit hole of the lens barrel. Satisfying 6 < d1s / T12 + EP01 / CT1 < 8 can effectively control the incidence of light. By adjusting the central thickness of the first lens and the air gap between the first lens and the second lens on the optical axis, the light incidence angle can be increased to achieve the wide-angle function. Controlling the distance EP01 from the object side end of the lens barrel to the object side surface of the first spacer along the optical axis can ensure the strength of the support point of the lens barrel and improve the forming feasibility and assembly stability.

[0049] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 25 < |R6 / T23| + D4s / CT4 < 40, where R6 is the radius of curvature of the image side surface of the third lens, T23 is the air gap between the second lens and the third lens on the optical axis, D4s is the outer diameter of the object side surface of the fourth spacer, and CT4 is the central thickness of the fourth lens on the optical axis. Satisfying 25 < |R6 / T23| + D4s / CT4 < 40 can optimize the internal structure of the lens. By controlling the air gap between the second lens and the third lens on the optical axis and the radius of curvature of the image side surface of the third lens, the spatial structure can be adjusted and the light path can be optimized. Controlling the outer diameter of the object side surface of the fourth spacer can indirectly adjust the outer diameter of the fourth lens, and then by adjusting the central thickness of the fourth lens, the structure of the fourth lens can be optimized and the forming feasibility of the lens can be improved.

[0050] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 12 < f1 / d2s + D2m / CT2 < 16, where f1 is the effective focal length of the first lens, d2s is the inner diameter of the object side surface of the second spacer, D2m is the outer diameter of the image side surface of the second spacer, and CT2 is the central thickness of the second lens on the optical axis. The optical imaging lens of the present application can be a small-sized wide-angle lens. When the structural space at the first two lenses is limited, satisfying 12 < f1 / d2s + D2m / CT2 < 16 can constrain the light while optimizing the spatial structure, control the effective focal length of the first lens and the thickness of the second lens, and make the light spread along the planned path. At the same time, by constraining the inner and outer diameters of the second spacer, stray light can be blocked, and the imaging quality can be improved while optimizing the optical path.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 15 < d2s / CT1 + D2s / T23 < 20, where d2s is the inner diameter of the object side of the second spacer, D2s is the outer diameter of the object side of the second spacer, CT1 is the central thickness of the first lens on the optical axis, and T23 is the air gap between the second lens and the third lens on the optical axis. The optical imaging lens of the present application has the characteristics of a small head and a wide angle, so the second lens has a very important position. Satisfying 15 < d2s / CT1 + D2s / T23 < 20 helps to control the relationship between the inner and outer diameters of the second spacer, the central thickness of the first lens, and the air gap between the first lens and the second lens. The light rays spread rapidly at the second lens, and the incident angle of the light rays is large, which requires a large inner aperture of the second spacer. However, if the inner aperture of the second spacer is too large, there may be a risk of reverse curvature in the remaining field of view, and at the same time, the stray light risk of the second lens will increase sharply. Therefore, the inner aperture of the second spacer is a point that needs to be carefully considered, taking into account both the main value and the stray light to obtain a comprehensive better aperture scheme.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 10 < |R7 / d3s| + d4s / T45 < 31, where R7 is the radius of curvature of the object side of the fourth lens, d3s is the inner diameter of the object side of the third spacer, d4s is the inner diameter of the object side of the fourth spacer, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis. Satisfying 10 < |R7 / d3s| + d4s / T45 < 31 can effectively control the position of the fourth lens on the optical axis. The fourth lens is closer to the third lens than to the fifth lens on the optical axis, which is related to the surface shape of the lens itself and is also to ensure the molding feasibility of the third lens and the fourth lens. At the same time, by adjusting the inner apertures of the third spacer and the fourth spacer, the stray light outside the edge field of view can be blocked, which helps to improve the imaging quality.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 8 < D2s / CP2 / 2 + |f2 / f1| < 120, where D2s is the outer diameter of the object side of the second spacer, CP2 is the maximum thickness of the second spacer along the optical axis, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. Satisfying 8 < D2s / CP2 / 2 + |f2 / f1| < 120 is beneficial to ensuring a reasonable path range of the light rays between the first lens and the second lens. The outer diameter of the object side of the second spacer is the same as the outer diameter of the second lens. The thickness of the second spacer can effectively adjust the gap distance between the second lens and the subsequent lens. By controlling the effective focal lengths of the first lens and the second lens and the thickness of the second spacer, the main value of the light rays can be effectively controlled, and the image quality performance can be improved.

[0054] In an exemplary embodiment, the optical imaging lens according to this application satisfies: R9 / R10>0, where R9 is the radius of curvature of the object-side surface of the fifth lens, and R10 is the radius of curvature of the image-side surface of the fifth lens. Satisfying R9 / R10>0 ensures that the curvature of light rays passing through the object-side and image-side surfaces of the fifth lens is in the same direction, effectively controlling the light rays to travel along the designed path and converge onto the image plane, thereby obtaining ideal image quality.

[0055] In an exemplary embodiment, the optical imaging lens according to this application satisfies: R4 / R7<0, where R4 is the radius of curvature of the image-side surface of the second lens and R7 is the radius of curvature of the object-side surface of the fourth lens. Satisfying R4 / R7<0 means that the radius of curvature of the image-side surface of the second lens and the radius of curvature of the object-side surface of the fourth lens are opposite in sign. Light rays passing through the second and fourth lenses exhibit a trend of first expanding and then contracting. The second lens expands the light, increasing the image area, while the fourth lens begins to contract the light, ensuring that all light rays converge onto the image surface as designed, thereby guaranteeing image quality.

[0056] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 0 < (d0m - D4m) / T45 < 4, where d0m is the inner diameter of the image-side end of the lens barrel, D4m is the outer diameter of the image-side side of the fourth isolator, and T45 is the air gap between the fourth and fifth lenses on the optical axis. Since the distance between the fourth and fifth lenses is small, this distance is sensitive to the optical path, requiring stable spacing. The constraint 0 < (d0m - D4m) / T45 < 4 helps reduce the difference between the inner diameter of the image-side opening of the lens barrel and the outer diameter of the image-side side of the fourth isolator. This allows the compressive force, which tends towards the optical axis, to be better distributed to the periphery of the fourth isolator and the inner side of the image-side opening of the lens barrel, while simultaneously meeting the demolding requirements and improving reliability.

[0057] In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The optical imaging lens according to the above embodiments of this application may employ multiple lenses, such as the five lenses mentioned above. By rationally allocating the optical power, surface shape, 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 manufacturing.

[0058] In embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the fifth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, the object-side surface and image-side surface of each of the first, second, third, fourth, and fifth lenses are both aspherical mirror surfaces.

[0059] 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.

[0060] Example 1

[0061] The following is for reference Figures 2A to 3C The optical imaging lens 1001, optical imaging lens 1002 and optical imaging lens 1003 according to Embodiment 1 of this application are described. Figures 2A to 2C Schematic diagrams of the optical imaging lens 1001, optical imaging lens 1002 and optical imaging lens 1003 according to Embodiment 1 of this application are shown respectively.

[0062] like Figures 2A to 2C As shown, optical imaging lenses 1001, 1002 and 1003 each include a lens barrel P0, lens groups E1 to E5 and multiple isolation components P1 to P4.

[0063] like Figures 2A to 2C As shown, optical imaging lenses 1001, 1002, and 1003 employ the same lens group, which, from the object side to the image side, sequentially includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has positive optical power and has an object-side surface S1 and an image-side surface S2. The second lens E2 has negative optical power and has an object-side surface S3 and an image-side surface S4. The third lens E3 has positive optical power and has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has negative optical power and has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has positive optical power and has an object-side surface S9 and an image-side surface S10. The filter has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging surface S13.

[0064] Table 1 shows the basic parameters of the lens groups of optical imaging lens 1001, optical imaging lens 1002 and optical imaging lens 1003 in Embodiment 1, wherein the units of radius of curvature, thickness and effective focal length are all millimeters (mm).

[0065]

[0066] Table 1

[0067] In this example, the aperture number Fno of optical imaging lenses 1001, 1002, and 1003 is 2.27; the effective focal length f of optical imaging lenses 1001, 1002, and 1003 is 2.85mm; and the maximum semi-field of view (Semi-FOV) of optical imaging lenses 1001, 1002, and 1003 is 49.27°.

[0068] In Embodiment 1, the object-side surface and image-side surface of the first lens E1 to the fifth lens E5 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:

[0069]

[0070] 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 2-1 and 2-2 give the higher-order coefficients A4, A6, A8, A10 that can be used for each aspherical mirror S1-S10 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 .

[0071] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.0807E-02 1.8109E+00 -5.6545E+01 1.0593E+03 -1.3125E+04 1.1253E+05 -6.8610E+05 S2 -8.6903E-02 -1.5643E+00 4.1265E+01 -6.7917E+02 7.2280E+03 -5.2519E+04 2.6839E+05 S3 -3.6546E-01 2.0110E+00 -2.4782E+01 2.0659E+02 -1.2231E+03 5.0586E+03 -1.4470E+04 S4 -3.2391E-01 1.0192E+00 -1.7617E+00 -1.9118E+01 1.9395E+02 -9.7878E+02 3.2499E+03 S5 -5.0195E-01 2.1743E+00 -8.4147E+00 3.4290E+01 -1.1088E+02 2.5686E+02 -4.2412E+02 S6 -8.4463E-01 3.4235E+00 -1.0631E+01 2.5408E+01 -4.3399E+01 4.9070E+01 -3.0741E+01 S7 4.4815E-01 -1.0924E+00 3.8641E+00 -1.3506E+01 3.3551E+01 -5.8222E+01 7.1586E+01 S8 5.0182E-01 -1.0572E+00 1.7062E+00 -2.3978E+00 2.5876E+00 -2.0673E+00 1.2506E+00 S9 6.9266E-02 -6.6058E-01 1.4733E+00 -2.0266E+00 1.8301E+00 -1.1262E+00 4.8598E-01 S10 -2.2277E-01 2.0886E-01 -1.3102E-01 1.9507E-02 3.3824E-02 -2.8400E-02 1.1086E-02

[0072] Table 2-1

[0073] Face number A18 A20 A22 A24 A26 A28 A30 S1 3.0167E+06 -9.5894E+06 2.1823E+07 -3.4647E+07 3.6426E+07 -2.2777E+07 6.4094E+06 S2 -9.7959E+05 2.5627E+06 -4.7632E+06 6.1348E+06 -5.2012E+06 2.6090E+06 -5.8630E+05 S3 2.7853E+04 -3.3078E+04 1.6247E+04 1.4628E+04 -3.0645E+04 2.0807E+04 -5.3734E+03 S4 -7.5741E+03 1.2622E+04 -1.4988E+04 1.2390E+04 -6.7760E+03 2.2031E+03 -3.2227E+02 S5 5.0363E+02 -4.3127E+02 2.6405E+02 -1.1276E+02 3.1904E+01 -5.3751E+00 4.0814E-01 S6 2.3827E-01 1.8436E+01 -1.7760E+01 8.9607E+00 -2.6706E+00 4.4596E-01 -3.2370E-02 S7 -6.2916E+01 3.9551E+01 -1.7613E+01 5.4209E+00 -1.0965E+00 1.3116E-01 -7.0314E-03 S8 -5.9228E-01 2.2214E-01 -6.4397E-02 1.3662E-02 -1.9596E-03 1.6768E-04 -6.4155E-06 S9 -1.4958E-01 3.3011E-02 -5.1842E-03 5.6558E-04 -4.0744E-05 1.7429E-06 -3.3532E-08 S10 -2.4903E-03 3.0465E-04 -9.2005E-06 -2.8885E-06 4.5328E-07 -2.8163E-08 6.7687E-10

[0074] Table 2-2

[0075] like Figures 2A to 2CAs shown, the optical imaging lenses 1001, 1002, and 1003 each include a first isolation member P1, a second isolation member P2, a third isolation member P3, and a fourth isolation member P4. Specifically, the first isolation member P1 is disposed between the first lens E1 and the second lens E2 and at least partially contacts the image-side surface of the first lens E1; the second isolation member P2 is disposed between the second lens E2 and the third lens E3 and at least partially contacts the image-side surface of the second lens E2; the third isolation member P3 is disposed between the third lens E3 and the fourth lens E4 and at least partially contacts the image-side surface of the third lens E3; and the fourth isolation member P4 is disposed between the fourth lens E4 and the fifth lens E5 and at least partially contacts the image-side surface of the fourth lens E4. These isolation members can block excess external light from entering, allowing the lenses and lens barrels to better support each other and enhancing the structural stability of the optical imaging lenses 1001, 1002, and 1003.

[0076] Table 3 shows the basic parameters of the separators and lens barrels of optical imaging lenses 1001, 1002 and 1003 in Embodiment 1. The unit of each parameter in Table 3 is millimeters (mm).

[0077] Example parameters Optical Imaging Lens 1001 Optical imaging lens 1002 Optical imaging lens 1003 d1s 1.623 1.663 1.703 d2s 2.429 2.629 2.121 D2s 4.100 4.100 3.340 D2m 4.100 4.100 3.500 d3s 2.960 3.160 3.360 d4s 4.658 4.346 5.238 D4s 6.429 6.169 6.429 D4m 6.429 6.329 6.429 EP01 0.779 0.779 0.779 CP2 0.018 0.018 0.197 EP34 0.761 0.511 0.761 d0m 6.800 6.800 6.800

[0078] Table 3

[0079] Figure 3A The on-axis chromatic aberration curves of optical imaging lenses 1001, 1002 and 1003 of Embodiment 1 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 3B The astigmatism curves of optical imaging lenses 1001, 1002 and 1003 of Embodiment 1 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 3C The distortion curves of optical imaging lenses 1001, 1002, and 1003 of Embodiment 1 are shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 3A to 3C It can be seen that the optical imaging lens 1001, optical imaging lens 1002 and optical imaging lens 1003 given in Example 1 can achieve good imaging quality.

[0080] Example 2

[0081] The following is for reference Figures 4A to 5C The optical imaging lens 2001, optical imaging lens 2002, and optical imaging lens 2003 according to Embodiment 2 of this application are described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figures 4A to 4C Schematic diagrams of the optical imaging lens 2001, optical imaging lens 2002 and optical imaging lens 2003 according to Embodiment 2 of this application are shown respectively.

[0082] like Figures 4A to 4C As shown, optical imaging lenses 2001, 2002 and 2003 each include a lens barrel P0, lens groups E1 to E5 and multiple isolation components P1 to P4.

[0083] like Figures 4A to 4C As shown, optical imaging lenses 2001, 2002, and 2003 employ the same lens group, which, from the object side to the image side, sequentially includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has positive optical power and has an object-side surface S1 and an image-side surface S2. The second lens E2 has negative optical power and has an object-side surface S3 and an image-side surface S4. The third lens E3 has positive optical power and has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has negative optical power and has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has positive optical power and has an object-side surface S9 and an image-side surface S10. The filter has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging surface S13.

[0084] In this example, the aperture number Fno of optical imaging lenses 2001, 2002, and 2003 is 2.27; the effective focal length f of optical imaging lenses 2001, 2002, and 2003 is 2.98mm; and the maximum semi-field of view (Semi-FOV) of optical imaging lenses 2001, 2002, and 2003 is 48.12°.

[0085] Table 4 shows the basic parameters of the lens groups of optical imaging lenses 2001, 2002 and 2003 in Embodiment 2, wherein the units of radius of curvature, thickness and effective focal length are millimeters (mm). Tables 5-1 and 5-2 show the higher-order coefficients that can be used for each aspherical mirror in Embodiment 2, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0086]

[0087] Table 4

[0088] Face number A4 A6 A8 A10 A12 A14 A16 S1 -3.5431E-02 4.3463E-01 -1.3292E+01 2.1286E+02 -2.1989E+03 1.5384E+04 -7.4843E+04 S2 -1.3849E-01 1.3715E+00 -2.6839E+01 3.1136E+02 -2.3750E+03 1.1959E+04 -3.8851E+04 S3 -3.2044E-01 1.3423E+00 -1.9993E+01 2.2394E+02 -1.7542E+03 9.5117E+03 -3.6457E+04 S4 -2.1625E-01 -2.3560E+00 4.0109E+01 -3.5432E+02 2.0460E+03 -8.2705E+03 2.4093E+04 S5 -4.2867E-01 1.0865E+00 -1.9534E+00 6.5652E+00 -2.3005E+01 5.4713E+01 -8.8121E+01 S6 -7.0867E-01 2.2617E+00 -3.6860E+00 -1.9135E+00 2.7477E+01 -7.4847E+01 1.1839E+02 S7 3.2479E-01 1.2347E-01 -1.2526E+00 -7.1345E-01 1.2368E+01 -3.4510E+01 5.4733E+01 S8 6.0116E-01 -1.0989E+00 1.1399E+00 -8.5813E-01 5.6773E-01 -4.7342E-01 4.6421E-01 S9 2.5767E-02 -5.7402E-01 1.3308E+00 -1.9993E+00 2.0313E+00 -1.4231E+00 7.0271E-01 S10 -5.9534E-02 -2.6014E-01 5.6541E-01 -6.5413E-01 4.8677E-01 -2.4705E-01 8.8135E-02

[0089] Table 5-1

[0090] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.5543E+05 -6.0760E+05 9.8269E+05 -1.0231E+06 6.0759E+05 -1.4285E+05 -1.2401E+04 S2 7.3040E+04 -3.6724E+04 -1.7934E+05 5.0645E+05 -6.3066E+05 4.0297E+05 -1.0715E+05 S3 1.0029E+05 -1.9871E+05 2.8075E+05 -2.7537E+05 1.7772E+05 -6.7659E+04 1.1474E+04 S4 -5.1217E+04 7.9531E+04 -8.9235E+04 7.0440E+04 -3.7110E+04 1.1713E+04 -1.6754E+03 S5 9.9491E+01 -8.0111E+01 4.5939E+01 -1.8362E+01 4.8657E+00 -7.6839E-01 5.4714E-02 S6 -1.2476E+02 9.1225E+01 -4.6568E+01 1.6298E+01 -3.7288E+00 5.0232E-01 -3.0213E-02 S7 -5.7554E+01 4.2042E+01 -2.1522E+01 7.5913E+00 -1.7597E+00 2.4141E-01 -1.4851E-02 S8 -3.7144E-01 2.0991E-01 -8.1118E-02 2.0972E-02 -3.4683E-03 3.3164E-04 -1.3946E-05 S9 -2.4815E-01 6.2906E-02 -1.1351E-02 1.4226E-03 -1.1765E-04 5.7723E-06 -1.2725E-07 S10 -2.2410E-02 4.0650E-03 -5.1944E-04 4.5386E-05 -2.5588E-06 8.2849E-08 -1.1472E-09

[0091] Table 5-2

[0092] like Figures 4A to 4C As shown, the optical imaging lenses 2001, 2002, and 2003 each include a first isolation member P1, a second isolation member P2, a third isolation member P3, and a fourth isolation member P4. Specifically, the first isolation member P1 is disposed between the first lens E1 and the second lens E2 and at least partially contacts the image-side surface of the first lens E1; the second isolation member P2 is disposed between the second lens E2 and the third lens E3 and at least partially contacts the image-side surface of the second lens E2; the third isolation member P3 is disposed between the third lens E3 and the fourth lens E4 and at least partially contacts the image-side surface of the third lens E3; and the fourth isolation member P4 is disposed between the fourth lens E4 and the fifth lens E5 and at least partially contacts the image-side surface of the fourth lens E4. These isolation members can block excess external light from entering, allowing the lenses and lens barrels to better support each other and enhancing the structural stability of the optical imaging lenses 2001, 2002, and 2003.

[0093] Table 6 shows the basic parameters of the separators and lens barrels of optical imaging lenses 2001, 2002 and 2003 in Embodiment 2. The unit of each parameter in Table 6 is millimeters (mm).

[0094] Example parameters Optical Imaging Lens 2001 Optical Imaging Lens 2002 Optical Imaging Lens 2003 d1s 1.673 1.673 1.673 d2s 2.539 2.177 2.177 D2s 3.889 3.340 3.340 D2m 3.889 3.500 3.500 d3s 2.978 3.018 3.058 d4s 4.689 5.129 4.058 D4s 6.429 6.429 5.763 D4m 6.429 6.429 5.923 EP01 0.545 0.545 0.545 CP2 0.018 0.278 0.278 EP34 0.704 0.704 0.459 d0m 6.800 6.800 6.800

[0095] Table 6

[0096] Figure 5A The on-axis chromatic aberration curves of optical imaging lenses 2001, 2002 and 2003 of Embodiment 2 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 5B The astigmatism curves of optical imaging lenses 2001, 2002 and 2003 of Embodiment 2 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 5C The distortion curves of optical imaging lenses 2001, 2002, and 2003 of Embodiment 2 are shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 5A to 5C It can be seen that the optical imaging lens 2001, optical imaging lens 2002 and optical imaging lens 2003 given in Example 2 can achieve good imaging quality.

[0097] Example 3

[0098] The following is for reference Figures 6A to 7C The optical imaging lens 3001, optical imaging lens 3002 and optical imaging lens 3003 according to Embodiment 3 of this application are described. Figures 6A to 6C Schematic diagrams of the optical imaging lens 3001, optical imaging lens 3002 and optical imaging lens 3003 according to Embodiment 3 of this application are shown respectively.

[0099] like Figures 6A to 6C As shown, optical imaging lenses 3001, 3002 and 3003 each include a lens barrel P0, lens groups E1 to E5 and multiple isolation components P1 to P4.

[0100] like Figures 6A to 6C As shown, optical imaging lenses 3001, 3002, and 3003 employ the same lens group, which, from the object side to the image side, sequentially includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. Specifically, the first lens E1 has positive optical power and has an object-side surface S1 and an image-side surface S2. The second lens E2 has negative optical power and has an object-side surface S3 and an image-side surface S4. The third lens E3 has positive optical power and has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has positive optical power and has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has negative optical power and has an object-side surface S9 and an image-side surface S10. The filter has an object-side surface S11 and an image-side surface S12. Light from the object passes sequentially through surfaces S1 to S12 and is finally imaged onto the imaging surface S13.

[0101] In this example, the aperture number Fno of optical imaging lenses 3001, 3002 and 3003 is 2.26; the effective focal length f of optical imaging lenses 3001, 3002 and 3003 is 3.13mm; and the maximum semi-field of view (Semi-FOV) of optical imaging lenses 3001, 3002 and 3003 is 46.74°.

[0102] Table 7 shows the basic parameters of the lens groups of optical imaging lenses 3001, 3002, and 3003 in Embodiment 3, wherein the units of radius of curvature, thickness, and effective focal length are millimeters (mm). Tables 8-1 and 8-2 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.

[0103]

[0104]

[0105] Table 7

[0106] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.8103E-02 3.6122E-02 8.1387E+00 -2.5357E+02 3.7504E+03 -3.3988E+04 2.0575E+05 S2 -7.5643E-02 -2.6250E-01 2.6973E+00 -2.4019E+01 1.0050E+02 -1.5130E+01 -2.2871E+03 S3 -3.5344E-01 4.3335E+00 -8.1442E+01 9.8432E+02 -8.1198E+03 4.7140E+04 -1.9682E+05 S4 -1.0244E-01 -2.4519E+00 3.5111E+01 -2.9466E+02 1.6579E+03 -6.5955E+03 1.9008E+04 S5 -3.3829E-01 -4.8172E-01 8.8062E+00 -4.3131E+01 1.3772E+02 -3.1687E+02 5.3592E+02 S6 -1.0993E+00 3.5072E+00 2.7441E+00 -6.6302E+01 2.7548E+02 -6.5619E+02 1.0437E+03 S7 -7.2458E-01 6.9892E+00 -2.3546E+01 3.9552E+01 -1.9080E+01 -6.5447E+01 1.7797E+02 S8 1.9498E-01 2.3489E+00 -1.1148E+01 2.6256E+01 -4.0925E+01 4.5534E+01 -3.7150E+01 S9 2.7309E-01 -1.1613E+00 2.0885E+00 -2.5681E+00 2.2252E+00 -1.3666E+00 6.0202E-01 S10 -2.1499E-02 -3.8044E-01 7.7553E-01 -9.0086E-01 6.9589E-01 -3.7578E-01 1.4528E-01

[0107] Table 8-1

[0108] Face number A18 A20 A22 A24 A26 A28 A30 S1 -8.6507E+05 2.5650E+06 -5.3505E+06 7.6862E+06 -7.2402E+06 4.0256E+06 -1.0013E+06 S2 1.4311E+04 -4.9716E+04 1.1339E+05 -1.7416E+05 1.7409E+05 -1.0235E+05 2.6805E+04 S3 5.9731E+05 -1.3179E+06 2.0904E+06 -2.3203E+06 1.7096E+06 -7.5074E+05 1.4861E+05 S4 -4.0092E+04 6.1862E+04 -6.8996E+04 5.4117E+04 -2.8302E+04 8.8574E+03 -1.2546E+03 S5 -6.6719E+02 6.0728E+02 -3.9794E+02 1.8232E+02 -5.5335E+01 9.9816E+00 -8.0934E-01 S6 -1.1663E+03 9.3126E+02 -5.2953E+02 2.0958E+02 -5.4877E+01 8.5448E+00 -5.9884E-01 S7 -2.3542E+02 1.9948E+02 -1.1460E+02 4.4607E+01 -1.1297E+01 1.6816E+00 -1.1168E-01 S8 2.2401E+01 -9.9416E+00 3.1977E+00 -7.2302E-01 1.0868E-01 -9.7285E-03 3.9155E-04 S9 -1.9203E-01 4.4410E-02 -7.3730E-03 8.5634E-04 -6.6050E-05 3.0391E-06 -6.3133E-08 S10 -4.0616E-02 8.2028E-03 -1.1822E-03 1.1832E-04 -7.7999E-06 3.0413E-07 -5.3087E-09

[0109] Table 8-2

[0110] like Figures 6A to 6C As shown, the optical imaging lenses 3001, 3002, and 3003 each include a first isolation member P1, a second isolation member P2, a third isolation member P3, and a fourth isolation member P4. Specifically, the first isolation member P1 is disposed between the first lens E1 and the second lens E2 and at least partially contacts the image-side surface of the first lens E1; the second isolation member P2 is disposed between the second lens E2 and the third lens E3 and at least partially contacts the image-side surface of the second lens E2; the third isolation member P3 is disposed between the third lens E3 and the fourth lens E4 and at least partially contacts the image-side surface of the third lens E3; and the fourth isolation member P4 is disposed between the fourth lens E4 and the fifth lens E5 and at least partially contacts the image-side surface of the fourth lens E4. These isolation members can block excess external light from entering, allowing the lenses and lens barrels to better support each other and enhancing the structural stability of the optical imaging lenses 3001, 3002, and 3003.

[0111] Table 9 shows the basic parameters of the isolation components and lens barrels of optical imaging lenses 3001, 3002 and 3003 in Embodiment 3. The unit of each parameter in Table 9 is millimeters (mm).

[0112]

[0113]

[0114] Table 9

[0115] Figure 7A The on-axis chromatic aberration curves of optical imaging lenses 3001, 3002 and 3003 of Embodiment 3 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 7B The astigmatism curves of optical imaging lenses 3001, 3002 and 3003 of Embodiment 3 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 7C The distortion curves of optical imaging lenses 3001, 3002, and 3003 of Embodiment 3 are shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 7A to 7C It can be seen that the optical imaging lens 3001, optical imaging lens 3002 and optical imaging lens 3003 given in Example 3 can achieve good imaging quality.

[0116] In summary, the optical imaging lenses 1001, 1002, 1003, 2001, 2002, 2003, 3001, 3002 and 3003 of Examples 1 to 3 satisfy the relationship shown in Table 10.

[0117] Conditional / Optical Imaging Lens 1001 1002 1003 2001 2002 2003 3001 3002 3003 (d2s×R3) / (d1s×R2) 21.14 22.33 17.59 28.83 24.72 24.72 15.70 16.59 13.48 d2s / CP2+d3s / T23 145.39 157.21 22.61 150.45 17.36 17.49 144.18 155.42 17.98 R2 / T12+D4s / R9 33.11 32.70 33.89 19.06 19.40 18.57 11.41 11.24 11.24 EP34 / T45+D4m / R10 13.80 12.33 13.80 8.03 8.03 6.81 7.11 5.80 5.80 d1s / T12+EP01 / CT1 6.88 7.01 7.14 6.38 6.38 6.38 6.19 6.30 6.41 |R6 / T23|+D4s / CT4 28.00 27.16 28.00 36.35 36.35 34.13 31.59 28.71 28.71 f1 / d2s+D2m / CT2 15.18 15.04 13.52 15.47 14.42 14.42 14.40 14.26 13.27 d2s / CT1+D2s / T23 19.22 19.61 15.94 19.14 16.43 16.43 19.26 19.76 16.72 |R7 / d3s|+d4s / T45 27.50 25.67 30.22 26.06 27.25 23.81 13.06 11.15 11.14 D2s / CP2 / 2+|f2 / f1| 117.05 117.05 11.63 110.77 8.75 8.75 112.03 112.03 10.07 (d0m-D4m) / T45 1.96 2.49 1.96 1.14 1.14 2.69 0.98 2.61 2.61

[0118] Table 10

[0119] 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.

[0120] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that, The lens assembly comprises: a lens group comprising, in order from the object side to the image side along an optical axis, a first lens having positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens, and a fifth lens; a plurality of spacers comprising a third spacer disposed on the image side of the third lens and at least partially in contact with the third lens, and a fourth spacer disposed on the image side of the fourth lens and at least partially in contact with the fourth lens; and a lens barrel for accommodating the lens group and the plurality of spacers; a radius of curvature R7 of an object side surface of the fourth lens, an inner diameter d3s of an object side surface of the third spacer, an inner diameter d4s of an object side surface of the fourth spacer, and an air separation T45 of the fourth lens and the fifth lens on the optical axis satisfy: 11.14 ≤ |R7 / d3s| + d4s / T45 ≤ 30.22; a radius of curvature R6 of an image side surface of the third lens, an air separation T23 of the second lens and the third lens on the optical axis, an outer diameter D4s of an object side surface of the fourth spacer, and a central thickness CT4 of the fourth lens on the optical axis satisfy: 27.16 ≤ |R6 / T23| + D4s / CT4 ≤ 36.35; the number of lenses having refractive power in the optical imaging lens is five; the positive and negative attributes of the refractive powers of the fourth lens and the fifth lens are opposite. The plurality of spacers further comprises a second spacer disposed on the image side of the second lens and at least partially in contact with the second lens; wherein 2.The optical imaging lens according to claim 1, wherein, an inner diameter d2s of an object side surface of the second spacer, an inner diameter d3s of an object side surface of the third spacer, a maximum thickness CP2 of the second spacer in the direction of the optical axis, and an air separation T23 of the second lens and the third lens on the optical axis satisfy: 17.36 ≤ d2s / CP2 + d3s / T23 ≤ 157.

21. a radius of curvature R2 of an image side surface of the first lens, an air separation T12 of the first lens and the second lens on the optical axis, an outer diameter D4s of an object side surface of the fourth spacer, and a radius of curvature R9 of an object side surface of the fifth lens satisfy: 11.24 ≤ R2 / T12 + D4s / R9 ≤ 33.

89. 3.The optical imaging lens according to claim 1, wherein, a distance EP34 of an image side surface of the third spacer to an object side surface of the fourth spacer on the optical axis, an air separation T45 of the fourth lens and the fifth lens on the optical axis, an outer diameter D4m of an image side surface of the fourth spacer, and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 5.80 ≤ EP34 / T45 + D4m / R10 ≤ 13.

80. 4.The optical imaging lens according to any one of claims 1 to 3, characterized in that, The plurality of spacers further comprises a first spacer disposed on the image side of the first lens and at least partially in contact with the first lens; wherein 5. The optical imaging lens according to any one of claims 1 to 3, characterized in that, ​ An inner diameter d1s of an object side surface of the first spacer, an air interval T12 of the first lens and the second lens on the optical axis, a distance EP01 of the object side end of the lens barrel to the object side surface of the first spacer in the direction of the optical axis, and a central thickness CT1 of the first lens on the optical axis satisfy: 6.19 ≤ d1s / T12 + EP01 / CT1 ≤ 7.

14. 6.The optical imaging lens according to claim 1, wherein, The plurality of spacers further includes a second spacer disposed on an image side of the second lens and at least partially in contact with the second lens; wherein An effective focal length f1 of the first lens, an inner diameter d2s of an object side surface of the second spacer, an outer diameter D2m of an image side surface of the second spacer, and a central thickness CT2 of the second lens on the optical axis satisfy: 13.27 ≤ f1 / d2s + D2m / CT2 ≤ 15.

47. 7.The optical imaging lens according to claim 1, wherein, The plurality of spacers further includes a second spacer disposed on an image side of the second lens and at least partially in contact with the second lens; wherein An inner diameter d2s of an object side surface of the second spacer, an outer diameter D2s of the object side surface of the second spacer, a central thickness CT1 of the first lens on the optical axis, and an air interval T23 of the second lens and the third lens on the optical axis satisfy: 15.94 ≤ d2s / CT1 + D2s / T23 ≤ 19.

76. 8.The optical imaging lens according to claim 2, wherein, The plurality of spacers further includes a first spacer disposed on an image side of the first lens and at least partially in contact with the first lens; wherein An inner diameter d1s of an object side surface of the first spacer, an inner diameter d2s of an object side surface of the second spacer, a curvature radius R2 of an image side surface of the first lens, and a curvature radius R3 of an object side surface of the second lens satisfy: 13.48 ≤ (d2s×R3) / (d1s×R2) ≤ 28.

83.

9. The optical imaging lens according to any one of claims 2, 6 and 7, characterized in that, An outer diameter D2s of an object side surface of the second spacer, a maximum thickness CP2 of the second spacer in the direction of the optical axis, an effective focal length f1 of the first lens, and an effective focal length f2 of the second lens satisfy: 8.75 ≤ D2s / CP2 / 2 + |f2 / f1| ≤ 117.

05.

10. The optical imaging lens according to any one of claims 1-3, 6-7, wherein, A curvature radius R9 of an object side surface of the fifth lens and a curvature radius R10 of an image side surface of the fifth lens satisfy: R9 / R10 > 0.

11. The optical imaging lens according to any one of claims 1-3, 6-7, wherein, A curvature radius R4 of an image side surface of the second lens and a curvature radius R7 of an object side surface of the fourth lens satisfy: R4 / R7 < 0.

12. The optical imaging lens according to any one of claims 1-3, 6-7, wherein, An inner diameter d0m of an image side end of the lens barrel, an outer diameter D4m of an image side surface of the fourth spacer, and an air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: 0.98 ≤ (d0m-D4m) / T45 ≤ 2.

69.

13. An optical imaging lens characterized in that, Comprising: A lens group including, in order from an object side to an image side along an optical axis, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, and a fifth lens; a plurality of spacers, including a second spacer disposed on an image side of the second lens and in at least partial contact with the second lens, and a fourth spacer disposed on an image side of the fourth lens and in at least partial contact with the fourth lens; and a lens barrel for accommodating the lens group and the plurality of spacers; a radius of curvature R4 of an image side surface of the second lens and a radius of curvature R7 of an object side surface of the fourth lens satisfy: R4 / R7 < 0; and an outer diameter D2s of an object side surface of the second spacer, a maximum thickness CP2 of the second spacer in the direction of the optical axis, an effective focal length f1 of the first lens, and an effective focal length f2 of the second lens satisfy: 8.75 ≤ D2s / CP2 / 2 + |f2 / f1| ≤ 117.05; a radius of curvature R6 of an image side surface of the third lens, an air separation T23 of the second lens and the third lens in the optical axis, an outer diameter D4s of an object side surface of the fourth spacer, and a central thickness CT4 of the fourth lens in the optical axis satisfy: 27.16 ≤ |R6 / T23| + D4s / CT4 ≤ 36.35; the number of lenses with optical power in the optical imaging lens is five; the positive and negative attributes of the optical powers of the fourth lens and the fifth lens are opposite.

14. The optical imaging lens according to claim 13, characterized in that, the plurality of spacers further includes a third spacer disposed on an image side of the third lens and in at least partial contact with the third lens; wherein an inner diameter d2s of an object side surface of the second spacer, an inner diameter d3s of an object side surface of the third spacer, a maximum thickness CP2 of the second spacer in the direction of the optical axis, and an air separation T23 of the second lens and the third lens in the optical axis satisfy: 17.36 ≤ d2s / CP2 + d3s / T23 ≤ 157.

21.

15. The optical imaging lens according to claim 13, wherein a radius of curvature R2 of an image side surface of the first lens, an air separation T12 of the first lens and the second lens in the optical axis, an outer diameter D4s of an object side surface of the fourth spacer, and a radius of curvature R9 of an object side surface of the fifth lens satisfy: 11.24 ≤ R2 / T12 + D4s / R9 ≤ 33.

89.

16. The optical imaging lens according to claim 13, characterized in that, the plurality of spacers further includes a third spacer disposed on an image side of the third lens and in at least partial contact with the third lens; wherein a distance EP34 of an image side surface of the third spacer to an object side surface of the fourth spacer in the optical axis, an air separation T45 of the fourth lens and the fifth lens in the optical axis, an outer diameter D4m of an image side surface of the fourth spacer, and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 5.80 ≤ EP34 / T45 + D4m / R10 ≤ 13.

80.

17. The optical imaging lens according to any one of claims 13-16, wherein, the plurality of spacers further includes a first spacer disposed on an image side of the first lens and in at least partial contact with the first lens; wherein An inner diameter d1s of an object side surface of the first spacer, an air interval T12 of the first lens and the second lens on the optical axis, a distance EP01 of the object side end of the lens barrel to the object side surface of the first spacer in the direction of the optical axis, and a central thickness CT1 of the first lens on the optical axis satisfy: 6.19 ≤ d1s / T12 + EP01 / CT1 ≤ 7.

14.

18. The optical imaging lens according to claim 13, characterized in that, An effective focal length f1 of the first lens, an inner diameter d2s of an object side surface of the second spacer, an outer diameter D2m of an image side surface of the second spacer, and a central thickness CT2 of the second lens on the optical axis satisfy: 13.27 ≤ f1 / d2s + D2m / CT2 ≤ 15.

47.

19. The optical imaging lens according to claim 13, characterized in that, An inner diameter d2s of an object side surface of the second spacer, an outer diameter D2s of the object side surface of the second spacer, a central thickness CT1 of the first lens on the optical axis, and an air interval T23 of the second lens and the third lens on the optical axis satisfy: 15.94 ≤ d2s / CT1 + D2s / T23 ≤ 19.

76.

20. The optical imaging lens according to claim 13, characterized in that, The plurality of spacers further comprises a third spacer disposed on an image side of the third lens and at least partially in contact with the third lens; wherein, A curvature radius R7 of an object side surface of the fourth lens, an inner diameter d3s of an object side surface of the third spacer, an inner diameter d4s of an object side surface of the fourth spacer, and an air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: 11.14 ≤ |R7 / d3s| + d4s / T45 ≤ 30.

22.

21. The optical imaging lens according to any of claims 14-16, 20, wherein, The plurality of spacers further comprises a first spacer disposed on an image side of the first lens and at least partially in contact with the first lens; wherein, An inner diameter d1s of an object side surface of the first spacer, an inner diameter d2s of an object side surface of the second spacer, a curvature radius R2 of an image side surface of the first lens, and a curvature radius R3 of an object side surface of the second lens satisfy: 13.48 ≤ (d2s x R3) / (d1s x R2) ≤ 28.

83.

22. The optical imaging lens according to any of claims 13-16, 18-20, wherein, A curvature radius R9 of an object side surface of the fifth lens and a curvature radius R10 of an image side surface of the fifth lens satisfy: R9 / R10 > 0.

23. The optical imaging lens according to any one of claims 13, 14, 18, 19, wherein, An inner diameter d0m of an image side end of the lens barrel, an outer diameter D4m of an image side surface of the fourth spacer, and an air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: 0.98 ≤ (d0m - D4m) / T45 ≤ 2.69.

Images