Optical camera lens

Abstract

The application discloses an optical camera lens, which comprises a first lens, a reflecting element, a second lens, a third lens and a fourth lens arranged in sequence along an optical path, wherein the first lens is arranged along a first optical axis, the second lens to the fourth lens are arranged along a second optical axis, and the reflecting element is arranged at the intersection position of the first optical axis and the second optical axis; the reflecting element has a first surface, a second surface and a third surface, wherein the first surface is the incident surface of light, the second surface is the reflecting surface of light, and the third surface is the exit surface of light; and the effective focal length f of the optical camera lens, the distance TZL from the center of the object side surface of the first lens to the intersection position of the first optical axis and the second optical axis on the first optical axis satisfy: TZL / f < 0.5.

Description

Technical Field

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

[0002] In modern society, mobile phones have become an indispensable part of people's lives. At the same time, with the increasing demand for telephoto cameras from mobile phone lenses, periscope telephoto lenses are relatively large. To reduce their size, it is often necessary to design chamfered edges on the lens or lens barrel, or reduce the imaging surface. However, this greatly reduces the photo quality of telephoto cameras. How to improve the photo quality of telephoto cameras while meeting the requirements of miniaturization is a current research hotspot in the field of optical components. Summary of the Invention

[0003] This application provides an optical camera lens comprising a first lens, a reflective element, a second lens, a third lens, and a fourth lens arranged sequentially along an optical path. The first lens is arranged along a first optical axis, and the second to fourth lenses are arranged along a second optical axis. The reflective element is located at the intersection of the first and second optical axes. The reflective element has a first surface, a second surface, and a third surface. The first surface is the incident surface of light, the second surface is the reflecting surface of light, and the third surface is the exit surface of light. The effective focal length f of the optical camera lens and the distance TZL from the center of the object-side surface of the first lens to the intersection of the first and second optical axes on the first optical axis satisfy: TZL / f < 0.5.

[0004] In one embodiment, the distance TZL from the center of the object side of the first lens to the intersection of the first optical axis and the second optical axis on the first optical axis satisfies the condition that TZL / ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical camera lens: TZL / ImgH < 1.6.

[0005] In one embodiment, the distance TZL from the center of the object-side surface of the first lens to the intersection of the first optical axis and the second optical axis on the first optical axis satisfies: 2mm. <TZL<6mm。

[0006] In one embodiment, the distance TZL from the center of the object side of the first lens to the intersection of the first optical axis and the second optical axis on the first optical axis, and the distance TYL from the intersection of the first optical axis and the second optical axis to the imaging surface on the second optical axis, satisfy: TZL / TYL<0.5.

[0007] In one embodiment, the effective focal length f of the optical camera lens and the effective focal length f1 of the first lens satisfy: 0.2 <f / f1<1.0。

[0008] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy: 0.2 <f2 / |f4|<1.0。

[0009] In one embodiment, the effective focal length f1 of the first lens and the combined focal length f234 of the second, third, and fourth lenses satisfy: 0 <f1 / f234<1.0。

[0010] In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens satisfy: -2.0 <R2 / R1<0。

[0011] In one embodiment, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 0 <R8 / |f4|<2.0。

[0012] In one embodiment, the center thickness CT1 of the first lens on the first optical axis and the center thickness CT2 of the second lens on the second optical axis satisfy: 0.2 <CT1 / CT2<1.0。

[0013] In one embodiment, the radius of curvature R5 of the object side of the third lens and the radius of curvature R6 of the image side of the third lens satisfy: 0 < |(R5-R6) / (R5+R6)| < 1.5.

[0014] In one embodiment, the center thickness CT3 of the third lens on the second optical axis, the center thickness CT4 of the fourth lens on the second optical axis, and the air gap TP2 of the reflective element and the second lens on the second optical axis satisfy: 0.2 < (CT3 + CT4) / TP2 < 1.0.

[0015] In one embodiment, the distance BFL from the image-side surface of the fourth lens to the imaging surface on the second optical axis, and the air gap T34 between the third and fourth lenses on the second optical axis, satisfy: 0.5 <BFL / T34<1.0。

[0016] In one embodiment, the radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens satisfy: 0.5 < |(R3-R4) / (R3+R4)| < 1.5.

[0017] In one embodiment, the first lens has positive optical power, and its object side is convex and its image side is convex.

[0018] In one embodiment, the second lens has positive optical power.

[0019] In one embodiment, the third lens has negative optical power and its object-side surface is concave.

[0020] In one embodiment, the image-side surface of the fourth lens is concave.

[0021] This application employs four lenses and a reflective element. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the aforementioned optical camera lens achieves at least one beneficial effect, such as large light transmission, long focal length, miniaturization, and high imaging quality. Attached Figure Description

[0022] 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:

[0023] Figure 1 A schematic diagram of the structure of an optical camera lens according to Embodiment 1 of this application is shown;

[0024] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 1 are shown respectively.

[0025] Figure 3 A schematic diagram of the structure of an optical camera lens according to Embodiment 2 of this application is shown;

[0026] Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 2 are shown respectively.

[0027] Figure 5 A schematic diagram of the structure of an optical camera lens according to Embodiment 3 of this application is shown;

[0028] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 3 are shown respectively.

[0029] Figure 7 A schematic diagram of the structure of an optical camera lens according to Embodiment 4 of this application is shown;

[0030] Figures 8A to 8D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 4 are shown respectively.

[0031] Figure 9 A schematic diagram of the structure of an optical camera lens according to Embodiment 5 of this application is shown;

[0032] Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 5 are shown respectively.

[0033] Figure 11 A schematic diagram of the structure of an optical camera lens according to Embodiment 6 of this application is shown; and

[0034] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Example 6 are shown respectively. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0039] 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.

[0040] 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.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] The features, principles and other aspects of this application are described in detail below.

[0043] An optical camera lens according to an exemplary embodiment of this application may include four lenses with optical power and a reflective element, namely a first lens, a reflective element, a second lens, a third lens, and a fourth lens arranged sequentially along the optical path. The first lens is arranged along a first optical axis, the second to fourth lenses are arranged along a second optical axis, and the reflective element is located at the intersection of the first and second optical axes. The reflective element has a first surface, a second surface, and a third surface; the first surface is the incident surface of light, the second surface is the reflecting surface of light, and the third surface is the exit surface of light. The effective focal length f of the optical camera lens and the distance TZL from the center of the object-side surface of the first lens to the intersection of the first and second optical axes on the first optical axis satisfy: TZL / f < 0.5. By setting the reflective element, the optical path is redirected, reducing the system size in one direction and decreasing the overall size of the lens, while also making it possible to increase the aperture of a telephoto lens.

[0044] In an exemplary embodiment, any two adjacent lenses among the first to fourth lenses may have a gap distance.

[0045] In an exemplary embodiment, the first lens may have positive optical power, with its object side being convex and its image side being convex. This surface configuration of the first lens is beneficial for the reasonable distribution of optical power of the optical camera lens, thereby improving the upper limit of the performance of the optical camera lens.

[0046] In an exemplary embodiment, the second lens may have positive optical power, which is beneficial for the second lens to converge the light after the first optical path deflection of the reflective element, thereby enabling the optical camera lens to have better imaging quality.

[0047] In an exemplary embodiment, the third lens may have negative optical power and its object side is concave, which is beneficial for the second, third and fourth lenses to have better group autofocus capability and can effectively reduce the travel size of the autofocus function.

[0048] In an exemplary embodiment, the fourth lens may have a positive or negative optical power, and its image side is concave, which is beneficial to optimizing the lens shape of the fourth lens, balancing the field curvature of the system, and simultaneously improving the ghosting caused by reflection related to the fourth lens.

[0049] Half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens, ImgH, satisfies: ImgH > 3.08 mm. In an exemplary embodiment, ImgH may be, for example, within the range of 3.08 mm to 3.11 mm.

[0050] In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture disposed between the first lens and the reflecting element. More specifically, the aperture is disposed between the first lens and the incident surface of the reflecting element.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: TZL / ImgH < 1.6, where TZL is the distance on the first optical axis from the center of the object side of the first lens to the intersection position of the first optical axis and the second optical axis, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens. More specifically, TZL and ImgH may further satisfy: TZL / ImgH < 1.6. Satisfying TZL / ImgH < 1.6 is beneficial to controlling the overall size of the first lens and the reflecting element in the direction of the first optical axis. In the case of the function of light path turning, the mechanism size can also be maintained, and miniaturization of the size of the optical imaging lens in the direction of the first optical axis can be achieved.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2 mm < TZL < 6 mm, where TZL is the distance on the first optical axis from the center of the object side of the first lens to the intersection position of the first optical axis and the second optical axis. More specifically, TZL may further satisfy: 3.1 mm < TZL < 4.5 mm. Satisfying 2 mm < TZL < 6 mm is beneficial to controlling the overall size of the optical imaging lens in the direction of the first optical axis, and ensuring that the usage scenario of the optical imaging lens can meet the ultra-thin design requirements of mobile phones.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: TZL / TYL < 0.5, where TZL is the distance on the first optical axis from the center of the object side of the first lens to the intersection position of the first optical axis and the second optical axis, and TYL is the distance on the second optical axis from the intersection position of the first optical axis and the second optical axis to the imaging surface. More specifically, TZL and TYL may further satisfy: TZL / TYL < 0.3. Satisfying TZL / TYL < 0.5 is beneficial to ensuring miniaturization of the optical imaging lens and obtaining a reasonable optical effective focal length.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2 < f / f1 < 1.0, where f is the effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens. More specifically, f and f1 may further satisfy: 0.5 < f / f1 < 0.8. Satisfying 0.2 < f / f1 < 1.0 is beneficial to controlling the effective focal length of the optical imaging lens and the focal length of the first lens, and the first lens is a positive-power lens, which can effectively and reasonably distribute the optical power to meet the design requirements of the telephoto system.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2 < f2 / |f4| < 1.0, where f2 is the effective focal length of the second lens and f4 is the effective focal length of the fourth lens. More specifically, f2 and f4 may further satisfy: 0.5 < f2 / |f4| < 0.8. Satisfying 0.2 < f2 / |f4| < 1.0 is beneficial to reasonably distributing the optical power to meet the design requirements of the telephoto system.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < f1 / f234 < 1.0, where f1 is the effective focal length of the first lens and f234 is the combined focal length of the second, third, and fourth lenses. More specifically, f1 and f234 may further satisfy: 0.3 < f1 / f234 < 0.9. Satisfying 0 < f1 / f234 < 1.0 is beneficial to controlling the relationship between the first lens and the second, third, and fourth lenses, and can effectively and reasonably distribute the optical power to meet the function that the second, third, and fourth lenses can achieve rapid focusing by moving separately.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.0 < R2 / R1 < 0, where R1 is the radius of curvature of the object side of the first lens and R2 is the radius of curvature of the image side of the first lens. More specifically, R2 and R1 may further satisfy: -1.7 < R2 / R1 < -0.5. Satisfying -2.0 < R2 / R1 < 0 is beneficial to controlling the curvature of the object side and the image side of the first lens, and can effectively and reasonably distribute the optical power to improve the upper limit of the performance of the optical system.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < R8 / |f4| < 2.0, where f4 is the effective focal length of the fourth lens and R8 is the radius of curvature of the image side of the fourth lens. More specifically, R8 and f4 may further satisfy: 0.2 < R8 / |f4| < 1.3. Satisfying 0 < R8 / |f4| < 2.0 is beneficial to improving the optical power of the fourth lens, reducing the sensitivity of the fourth lens, and can improve the performance yield of the lens.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2 < CT1 / CT2 < 1.0, where CT1 is the central thickness of the first lens on the first optical axis, and CT2 is the central thickness of the second lens on the second optical axis. More specifically, CT1 and CT2 may further satisfy: 0.4 < CT1 / CT2 < 0.8. Satisfying 0.2 < CT1 / CT2 < 1.0 is beneficial to ensuring the processability of the first lens and the second lens, and at the same time is beneficial to the stability of assembly.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < |(R5 - R6) / (R5 + R6)| < 1.5, where R5 is the curvature radius of the object side surface of the third lens, and R6 is the curvature radius of the image side surface of the third lens. More specifically, R5 and R6 may further satisfy: 0.2 < |(R5 - R6) / (R5 + R6)| < 1.3. Satisfying 0 < |(R5 - R6) / (R5 + R6)| < 1.5 is beneficial to controlling the relationship between the curvature radii of the object side surface and the image side surface of the third lens, can improve the light convergence ability of the third lens, and enable the optical imaging lens to have the characteristic of a small field angle.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2 < (CT3 + CT4) / TP2 < 1.0, where CT3 is the central thickness of the third lens on the second optical axis, CT4 is the central thickness of the fourth lens on the second optical axis, and TP2 is the air gap between the reflecting element and the second lens on the second optical axis. More specifically, CT3, CT4 and TP2 may further satisfy: 0.5 < (CT3 + CT4) / TP2 < 0.8. Satisfying 0.2 < (CT3 + CT4) / TP2 < 1.0 is beneficial to improving the processability of the lens, reducing the sensitivity of the lens, and increasing the yield rate of the optical imaging lens on the premise of optimizing and balancing aberration.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < BFL / T34 < 1.0, where BFL is the distance from the image side surface of the fourth lens to the imaging surface on the second optical axis, and T34 is the air gap between the third lens and the fourth lens on the second optical axis. More specifically, BFL and T34 may further satisfy: 0.7 < BFL / T34 < 0.9. In the optical imaging lens, there is a convertible relationship between the air gap between the third lens and the fourth lens on the second optical axis and the mechanical back focus, including but not limited to that when the value of T34 is larger, BFL is smaller, or when the value of T34 is smaller, the value of BFL is larger. Satisfying 0.5 < BFL / T34 < 1.0 is beneficial to the optical imaging lens to match a larger chip, obtain better phase difference convergence ability, and thus be able to obtain better imaging quality.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < |(R3 - R4) / (R3 + R4)| < 1.5, where R3 is the radius of curvature of the object side surface of the second lens, and R4 is the radius of curvature of the image side surface of the second lens. More specifically, R3 and R4 may further satisfy: 0.9 < |(R3 - R4) / (R3 + R4)| < 1.1. Satisfying 0.5 < |(R3 - R4) / (R3 + R4)| < 1.5 is beneficial to improving the optical power of the second lens, reducing the sensitivity of the second lens, and can improve the performance yield of the lens.

[0064] In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 14.43 mm to 20.40 mm, the effective focal length f1 of the first lens may be, for example, in the range of 20.66 mm to 31.39 mm, the effective focal length f2 of the second lens may be, for example, in the range of 5.66 mm to 8.02 mm, the effective focal length f3 of the third lens may be, for example, in the range of -38.90 mm to -4.13 mm, and the effective focal length f4 of the fourth lens may be, for example, in the range of -12.85 mm to 11.10 mm. Half of the maximum field angle of view Semi-FOV of the optical imaging lens may satisfy: 8.7° < Semi-FOV < 12.6°. The ratio of the effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens may satisfy 2.79 < f / EPD < 3.70. The distance TYL from the intersection position of the first optical axis and the second optical axis to the imaging surface on the second optical axis may satisfy: 17.95 mm < TYL < 25.37 mm.

[0065] In an exemplary embodiment, the optical imaging lens according to the present application further includes a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes an optical imaging lens with continuously variable optical power. The optical imaging lens according to the above embodiment of the present application may employ multiple lenses, such as the four lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the on-axis spacing between each lens, etc., the low-order aberrations of the optical imaging lens can be effectively balanced and controlled, while reducing the sensitivity of its tolerance and maintaining the miniaturization of the optical imaging lens.

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

[0067] However, those skilled in the art will understand that the number of lenses constituting the optical camera 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 four lenses are described as an example in the embodiment, the optical camera lens is not limited to including four lenses. If desired, the optical camera lens may also include other numbers of lenses.

[0068] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical camera lens applicable to the above-described embodiments.

[0069] Example 1

[0070] The following is for reference Figures 1 to 2D Describes an optical camera lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical camera lens according to Embodiment 1 of this application is shown.

[0071] like Figure 1 As shown, the optical camera lens includes, from the object side to the image side, the following components in sequence: a first lens E1, an aperture stop STO, and a reflective element P arranged along the first optical axis; a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11 arranged along the second optical axis; wherein the reflective element P is located at the intersection of the first optical axis and the second optical axis.

[0072] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The reflecting element P is a prism with an incident surface P1, a reflecting surface P2, and an exit surface P3. The second lens E2 has positive 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 concave 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 concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object passes sequentially along the first optical axis through the first lens E1, the aperture S10, and the reflecting element P. After being reflected by the reflecting element P, it passes along the second optical axis, then sequentially through the second lens E2, the third lens E3, the fourth lens E4, and the filter E5, and finally forms an image on the imaging surface S11.

[0073] In this example, the effective focal length f of the optical camera lens is 17.25 mm. The effective focal length f1 of the first lens is 22.35 mm, the effective focal length f2 of the second lens is 7.76 mm, the effective focal length f3 of the third lens is -4.64 mm, and the effective focal length f4 of the fourth lens is 11.09 mm. Half the diagonal length ImgH of the effective pixel area on the imaging plane S11 of the optical camera lens is 3.10 mm. Half the maximum field of view (Semi-FOV) of the optical camera lens is 10.2°. The ratio f / EPD of the effective focal length f of the optical camera lens to the entrance pupil diameter EPD of the optical camera lens is 2.80. The distance TZL from the center of the object side of the first lens to the intersection of the first and second optical axes on the first optical axis is 4.30 mm, and the distance TYL from the intersection of the first and second optical axes to the imaging plane on the second optical axis is 20.33 mm.

[0074] Table 1 shows the basic parameters of the optical camera lens of Example 1, where the units for radius of curvature and thickness are millimeters (mm).

[0075]

[0076] Table 1

[0077] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the fourth lens E4 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:

[0078]

[0079] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A1, and A2 that can be used for each aspherical mirror S1-S8 in Example 1. 10 A 12 A 14 A 16 and A 18 .

[0080] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -8.0055E-02 -7.4043E-03 -1.1540E-03 -1.3709E-04 -3.7821E-05 4.0049E-06 -3.8301E-06 0.0000E+00 S2 -7.2296E-02 -6.5095E-03 -9.7848E-04 -1.0817E-04 -2.5639E-05 2.1342E-06 -2.0721E-06 0.0000E+00 S3 2.3864E-01 3.0645E-02 -4.1283E-03 -2.7138E-04 -3.6066E-05 -1.2756E-04 1.4841E-05 0.0000E+00 S4 1.1215E-01 2.6396E-02 -1.2275E-02 -1.6218E-03 -3.1785E-04 -3.5336E-04 6.8933E-04 0.0000E+00 S5 -2.4723E-01 3.8688E-02 3.4704E-03 -8.7241E-03 1.1997E-03 -1.1807E-03 8.4363E-04 0.0000E+00 S6 1.2786E-01 3.0936E-02 1.4841E-02 -4.2223E-03 7.4322E-04 -4.8620E-04 -3.7329E-05 0.0000E+00 S7 6.2118E-01 -2.3328E-02 5.7900E-03 -3.3192E-04 2.2046E-04 1.1713E-04 -3.3337E-05 -1.2815E-06 S8 5.0259E-01 -3.9883E-02 2.0390E-03 -3.5736E-04 -1.0245E-04 1.7100E-04 -2.8138E-05 0.0000E+00

[0081] Table 2

[0082] Figure 2A The on-axis chromatic aberration curve of the optical camera 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 camera lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curve of the optical camera lens of Embodiment 1 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 2D The magnification chromatic aberration curve of the optical camera lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 2A to 2D It can be seen that the optical camera lens given in Example 1 can achieve good imaging quality.

[0083] Example 2

[0084] The following is for reference Figures 3 to 4D This application describes an optical camera lens according to Embodiment 2. 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 camera lens according to Embodiment 2 of this application is shown.

[0085] like Figure 3 As shown, the optical camera lens includes, from the object side to the image side, the following components in sequence: a first lens E1, an aperture stop STO, and a reflective element P arranged along the first optical axis; a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11 arranged along the second optical axis; wherein the reflective element P is located at the intersection of the first optical axis and the second optical axis.

[0086] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The reflecting element P is a prism with an incident surface P1, a reflecting surface P2, and an exit surface P3. The second lens E2 has positive 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 concave 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 concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object passes sequentially along the first optical axis through the first lens E1, the aperture S10, and the reflecting element P. After being reflected by the reflecting element P, it passes along the second optical axis, then sequentially through the second lens E2, the third lens E3, the fourth lens E4, and the filter E5, and finally forms an image on the imaging surface S11.

[0087] In this example, the effective focal length f of the optical camera lens is 16.17 mm. The effective focal length f1 of the first lens is 20.67 mm, the effective focal length f2 of the second lens is 6.89 mm, the effective focal length f3 of the third lens is -4.14 mm, and the effective focal length f4 of the fourth lens is 10.82 mm. Half the diagonal length ImgH of the effective pixel area on the imaging plane S11 of the optical camera lens is 3.10 mm. Half the maximum field of view (Semi-FOV) of the optical camera lens is 11.0°. The ratio f / EPD of the effective focal length f of the optical camera lens to the entrance pupil diameter EPD of the optical camera lens is 2.80. The distance TZL from the center of the object side of the first lens to the intersection of the first and second optical axes on the first optical axis is 3.94 mm, and the distance TYL from the intersection of the first and second optical axes to the imaging plane on the second optical axis is 18.78 mm.

[0088] Table 3 shows the basic parameters of the optical camera lens of Example 2, where the units for radius of curvature and thickness are millimeters (mm). Table 4 shows the higher-order coefficients that can be used for each aspherical mirror in Example 2, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0089]

[0090]

[0091] Table 3

[0092] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -7.4069E-02 -6.6083E-03 -1.0635E-03 -1.2191E-04 -3.4588E-05 3.6276E-06 -3.4905E-06 0.0000E+00 S2 -6.9953E-02 -5.6874E-03 -9.0850E-04 -9.3863E-05 -2.5226E-05 3.7457E-06 -2.3290E-06 0.0000E+00 S3 2.1993E-01 2.8954E-02 -3.6931E-03 -2.0464E-04 -5.1115E-05 -1.0472E-04 7.8952E-06 0.0000E+00 S4 8.2712E-02 2.6120E-02 -1.3633E-02 -2.7848E-03 -1.4024E-03 2.2133E-04 3.7221E-04 0.0000E+00 S5 -2.3318E-01 3.7735E-02 3.7515E-03 -8.5516E-03 5.1676E-04 -5.6607E-04 5.2934E-04 0.0000E+00 S6 1.3986E-01 2.5031E-02 1.3052E-02 -4.0826E-03 7.0164E-04 -4.3943E-04 -3.1017E-05 0.0000E+00 S7 5.3753E-01 -2.1673E-02 5.2624E-03 -4.6170E-04 2.3756E-04 1.0287E-04 -2.8951E-05 -1.1182E-06 S8 4.7320E-01 -3.9191E-02 2.8991E-03 -7.0843E-04 5.4928E-05 1.5562E-04 -2.5531E-05 0.0000E+00

[0093] Table 4

[0094] Figure 4AThe on-axis chromatic aberration curve of the optical camera lens of Embodiment 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the optical camera lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical camera lens of Embodiment 2 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical camera lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 4A to 4D It can be seen that the optical camera lens given in Example 2 can achieve good imaging quality.

[0095] Example 3

[0096] The following is for reference Figures 5 to 6D An optical camera lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical camera lens according to Embodiment 3 of this application is shown.

[0097] like Figure 5 As shown, the optical camera lens includes, from the object side to the image side, the following components in sequence: a first lens E1, an aperture stop STO, and a reflective element P arranged along the first optical axis; a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11 arranged along the second optical axis; wherein the reflective element P is located at the intersection of the first optical axis and the second optical axis.

[0098] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The reflecting element P is a prism with an incident surface P1, a reflecting surface P2, and an exit surface P3. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object passes sequentially along the first optical axis through the first lens E1, the aperture S10, and the reflecting element P. After being reflected by the reflecting element P, it passes along the second optical axis, then sequentially through the second lens E2, the third lens E3, the fourth lens E4, and the filter E5, and finally forms an image on the imaging surface S11.

[0099] In this example, the effective focal length f of the optical camera lens is 16.96 mm, the effective focal length f1 of the first lens is 25.27 mm, the effective focal length f2 of the second lens is 6.82 mm, the effective focal length f3 of the third lens is -31.60 mm, and the effective focal length f4 of the fourth lens is -10.94 mm. Half the diagonal length ImgH of the effective pixel area on the imaging plane S11 of the optical camera lens is 3.09 mm, half the maximum field of view (Semi-FOV) of the optical camera lens is 10.8°, and the ratio f / EPD of the effective focal length f of the optical camera lens to the entrance pupil diameter EPD of the optical camera lens is 3.69. The distance TZL from the center of the object side of the first lens to the intersection of the first and second optical axes on the first optical axis is 3.41 mm, and the distance TYL from the intersection of the first and second optical axes to the imaging plane on the second optical axis is 20.84 mm.

[0100] Table 5 shows the basic parameters of the optical camera lens of Example 3, where the units for radius of curvature and thickness are millimeters (mm). Table 6 shows the higher-order coefficients that can be used for each aspherical mirror in Example 3, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0101]

[0102] Table 5

[0103]

[0104]

[0105] Table 6

[0106] Figure 6A The on-axis chromatic aberration curve of the optical camera lens of Embodiment 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical camera lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical camera lens of Embodiment 3 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 6D The magnification chromatic aberration curve of the optical camera lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 6A to 6D It can be seen that the optical camera lens given in Example 3 can achieve good imaging quality.

[0107] Example 4

[0108] The following is for reference Figures 7 to 8D An optical camera lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical camera lens according to Embodiment 4 of this application is shown.

[0109] like Figure 7 As shown, the optical camera lens includes, from the object side to the image side, the following components in sequence: a first lens E1, an aperture stop STO, and a reflective element P arranged along the first optical axis; a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11 arranged along the second optical axis; wherein the reflective element P is located at the intersection of the first optical axis and the second optical axis.

[0110] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The reflecting element P is a prism with an incident surface P1, a reflecting surface P2, and an exit surface P3. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object passes sequentially along the first optical axis through the first lens E1, the aperture S10, and the reflecting element P. After being reflected by the reflecting element P, it passes along the second optical axis, then sequentially through the second lens E2, the third lens E3, the fourth lens E4, and the filter E5, and finally forms an image on the imaging surface S11.

[0111] In this example, the effective focal length f of the optical camera lens is 20.39 mm. The effective focal length f1 of the first lens is 31.38 mm, the effective focal length f2 of the second lens is 8.01 mm, the effective focal length f3 of the third lens is -38.89 mm, and the effective focal length f4 of the fourth lens is -12.84 mm. Half the diagonal length ImgH of the effective pixel area on the imaging plane S11 of the optical camera lens is 3.09 mm. Half the maximum field of view (Semi-FOV) of the optical camera lens is 8.8°. The ratio f / EPD of the effective focal length f of the optical camera lens to the entrance pupil diameter EPD of the optical camera lens is 3.30. The distance TZL from the center of the object side of the first lens to the intersection of the first and second optical axes on the first optical axis is 4.48 mm, and the distance TYL from the intersection of the first and second optical axes to the imaging plane on the second optical axis is 25.36 mm.

[0112] Table 7 shows the basic parameters of the optical camera lens of Example 4, where the units for radius of curvature and thickness are millimeters (mm). Table 8 shows the higher-order coefficients that can be used for each aspherical mirror in Example 4, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0113]

[0114] Table 7

[0115] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -3.6869E-02 -8.6153E-04 -1.7339E-04 3.7397E-05 -2.2768E-05 1.1241E-05 -2.1913E-06 0.0000E+00 S2 -5.9371E-02 -2.1421E-03 -3.6290E-04 3.3765E-05 -3.8225E-05 6.5026E-06 -1.2806E-05 0.0000E+00 S3 1.6142E-01 -1.1762E-02 -3.7195E-03 -3.9855E-04 3.5598E-04 1.7144E-04 4.3472E-05 0.0000E+00 S4 -2.4959E-01 -3.2592E-02 -4.2029E-02 -2.4825E-03 -7.1137E-03 -2.8797E-03 -1.0507E-03 0.0000E+00 S5 -3.5700E-01 -3.3089E-04 -7.4752E-03 -2.1991E-04 -2.0558E-04 -4.1769E-05 -1.3509E-05 0.0000E+00 S6 -3.2280E-01 1.0830E-02 -5.3497E-03 -5.5673E-04 -2.3600E-04 2.4742E-05 2.0749E-05 0.0000E+00 S7 1.0359E+00 -1.2385E-01 1.0623E-02 -4.0721E-03 9.1602E-04 -1.2619E-05 1.4132E-04 6.5847E-06 S8 1.5145E+00 -1.9023E-01 2.3666E-02 -6.1839E-03 2.1396E-03 4.7768E-05 2.7591E-04 0.0000E+00

[0116] Table 8

[0117] Figure 8A The on-axis chromatic aberration curve of the optical camera 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 camera lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical camera lens of Example 4 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the optical camera lens of Embodiment 4 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 8A to 8D It can be seen that the optical camera lens given in Example 4 can achieve good imaging quality.

[0118] Example 5

[0119] The following is for reference Figures 9 to 10D An optical camera lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical camera lens according to Embodiment 5 of this application is shown.

[0120] like Figure 9 As shown, the optical camera lens includes, from the object side to the image side, the following components in sequence: a first lens E1, an aperture stop STO, and a reflective element P arranged along the first optical axis; a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11 arranged along the second optical axis; wherein the reflective element P is located at the intersection of the first optical axis and the second optical axis.

[0121] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The reflecting element P is a prism with an incident surface P1, a reflecting surface P2, and an exit surface P3. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object passes sequentially along the first optical axis through the first lens E1, the aperture S10, and the reflecting element P. After being reflected by the reflecting element P, it passes along the second optical axis, then sequentially through the second lens E2, the third lens E3, the fourth lens E4, and the filter E5, and finally forms an image on the imaging surface S11.

[0122] In this example, the effective focal length f of the optical camera lens is 14.44 mm. The effective focal length f1 of the first lens is 22.23 mm, the effective focal length f2 of the second lens is 5.67 mm, the effective focal length f3 of the third lens is -27.54 mm, and the effective focal length f4 of the fourth lens is -9.10 mm. Half the diagonal length ImgH of the effective pixel area on the imaging plane S11 of the optical camera lens is 3.09 mm. Half the maximum field of view (Semi-FOV) of the optical camera lens is 12.5°. The ratio f / EPD of the effective focal length f of the optical camera lens to the entrance pupil diameter EPD of the optical camera lens is 3.30. The distance TZL from the center of the object side of the first lens to the intersection of the first and second optical axes on the first optical axis is 3.18 mm, and the distance TYL from the intersection of the first and second optical axes to the imaging plane on the second optical axis is 17.96 mm.

[0123] Table 9 shows the basic parameters of the optical camera lens of Example 5, where the units for radius of curvature and thickness are millimeters (mm). Table 10 shows the higher-order coefficients that can be used for each aspherical mirror in Example 5, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0124]

[0125] Table 9

[0126] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -2.6116E-02 -6.1025E-04 -1.2282E-04 2.6490E-05 -1.6128E-05 7.9625E-06 -1.5522E-06 0.0000E+00 S2 -4.2055E-02 -1.5173E-03 -2.5706E-04 2.3917E-05 -2.7076E-05 4.6060E-06 -9.0709E-06 0.0000E+00 S3 1.1434E-01 -8.3317E-03 -2.6346E-03 -2.8231E-04 2.5215E-04 1.2144E-04 3.0792E-05 0.0000E+00 S4 -1.7680E-01 -2.3086E-02 -2.9770E-02 -1.7584E-03 -5.0388E-03 -2.0398E-03 -7.4421E-04 0.0000E+00 S5 -2.5287E-01 -2.3438E-04 -5.2949E-03 -1.5577E-04 -1.4562E-04 -2.9586E-05 -9.5692E-06 0.0000E+00 S6 -2.2865E-01 7.6713E-03 -3.7894E-03 -3.9435E-04 -1.6717E-04 1.7526E-05 1.4697E-05 0.0000E+00 S7 7.3378E-01 -8.7726E-02 7.5249E-03 -2.8844E-03 6.4885E-04 -8.9382E-06 1.0010E-04 4.6641E-06 S8 1.0728E+00 -1.3475E-01 1.6764E-02 -4.3803E-03 1.5156E-03 3.3836E-05 1.9544E-04 0.0000E+00

[0127] Table 10

[0128] Figure 10A The on-axis chromatic aberration curve of the optical camera 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 camera lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C The distortion curve of the optical camera lens of Embodiment 5 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 10D The magnification chromatic aberration curve of the optical camera lens of Embodiment 5 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 10A to 10D It can be seen that the optical camera lens given in Example 5 can achieve good imaging quality.

[0129] Example 6

[0130] The following is for reference Figures 11 to 12D An optical camera lens according to Embodiment 6 of this application is described. Figure 11A schematic diagram of the structure of an optical camera lens according to Embodiment 6 of this application is shown.

[0131] like Figure 11 As shown, the optical camera lens includes, from the object side to the image side, the following components in sequence: a first lens E1, an aperture stop STO, and a reflective element P arranged along the first optical axis; a second lens E2, a third lens E3, a fourth lens E4, a filter E5, and an imaging surface S11 arranged along the second optical axis; wherein the reflective element P is located at the intersection of the first optical axis and the second optical axis.

[0132] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The reflecting element P is a prism with an incident surface P1, a reflecting surface P2, and an exit surface P3. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object passes sequentially along the first optical axis through the first lens E1, the aperture S10, and the reflecting element P. After being reflected by the reflecting element P, it passes along the second optical axis, then sequentially through the second lens E2, the third lens E3, the fourth lens E4, and the filter E5, and finally forms an image on the imaging surface S11.

[0133] In this example, the effective focal length f of the optical camera lens is 17.92 mm. The effective focal length f1 of the first lens is 30.81 mm, the effective focal length f2 of the second lens is 7.12 mm, the effective focal length f3 of the third lens is -36.08 mm, and the effective focal length f4 of the fourth lens is -12.19 mm. Half the diagonal length ImgH of the effective pixel area on the imaging plane S11 of the optical camera lens is 3.09 mm. Half the maximum field of view (Semi-FOV) of the optical camera lens is 9.7°. The ratio f / EPD of the effective focal length f of the optical camera lens to the entrance pupil diameter EPD of the optical camera lens is 3.30. The distance TZL from the center of the object side of the first lens to the intersection of the first and second optical axes on the first optical axis is 4.35 mm, and the distance TYL from the intersection of the first and second optical axes to the imaging plane on the second optical axis is 23.88 mm.

[0134] Table 11 shows the basic parameters of the optical camera lens of Example 6, where the units for radius of curvature and thickness are millimeters (mm). Table 12 shows the higher-order coefficients that can be used for each aspherical mirror in Example 6, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0135]

[0136] Table 11

[0137] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -3.3875E-02 -7.4449E-04 -1.2057E-04 2.8238E-05 -1.5523E-05 7.2276E-06 -1.3348E-06 0.0000E+00 S2 -6.6738E-02 -1.8924E-03 -2.1827E-04 5.8639E-05 -8.2005E-06 1.5159E-05 -4.1107E-06 0.0000E+00 S3 1.7998E-01 -1.1784E-02 -3.1900E-03 -4.2482E-04 2.2289E-04 1.1706E-04 6.2055E-05 0.0000E+00 S4 -2.8480E-01 -5.1103E-02 -5.2971E-02 -9.9859E-03 -9.7746E-03 -6.8115E-03 -1.7026E-03 0.0000E+00 S5 -3.2735E-01 -6.9560E-04 -5.8673E-03 -1.2295E-03 9.9972E-07 -6.1514E-05 -1.0344E-05 0.0000E+00 S6 -3.1489E-01 1.1278E-02 -5.3218E-03 -5.5115E-04 -2.4955E-04 -5.2328E-05 -5.9660E-06 0.0000E+00 S7 1.1450E+00 -1.4232E-01 1.4682E-02 -3.9099E-03 8.2894E-04 -5.0806E-05 1.2110E-04 1.6597E-07 S8 1.3591E+00 -2.0456E-01 2.5572E-02 -5.6828E-03 2.1633E-03 2.2708E-04 3.1286E-04 0.0000E+00

[0138] Table 12

[0139] Figure 12A The on-axis chromatic aberration curve of the optical camera 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 camera lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C The distortion curve of the optical camera lens of Embodiment 6 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 12D The magnification chromatic aberration curve of the optical camera lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 12A to 12D It can be seen that the optical camera lens given in Example 6 can achieve good imaging quality.

[0140] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0141] Conditional / Example 1 2 3 4 5 6 TZL / f 0.25 0.24 0.20 0.22 0.22 0.24 TZL / ImgH 1.39 1.27 1.10 1.45 1.03 1.41 TZL / TYL 0.21 0.21 0.16 0.18 0.18 0.18 f / f1 0.77 0.78 0.67 0.65 0.65 0.58 f2 / |f4| 0.70 0.64 0.62 0.62 0.62 0.58 f1 / f234 0.85 0.69 0.36 0.40 0.40 0.70 R2 / R1 -0.55 -1.20 -0.66 -0.63 -0.63 -1.66 R8 / |f4| 1.27 1.00 0.55 0.66 0.66 0.26 CT1 / CT2 0.63 0.68 0.42 0.74 0.74 0.56 |(R5-R6) / (R5+R6)| 1.10 1.20 0.23 0.24 0.24 0.24 (CT3+CT4) / TP2 0.68 0.75 0.59 0.64 0.64 0.65 BFL / T34 0.88 0.89 0.79 0.76 0.76 0.71 |(R3-R4) / (R3+R4)| 0.93 0.94 0.92 1.00 1.00 1.03

[0142] Table 13

[0143] 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 camera lens comprising, in order along an optical path, a first lens, a reflective element, a second lens, a third lens and a fourth lens, characterized in that, the first lens is disposed along a first optical axis, the second lens to the fourth lens are disposed along a second optical axis, the reflective element is disposed at an intersection of the first optical axis and the second optical axis; the reflective element has a first surface, a second surface and a third surface, the first surface is an incident surface of light, the second surface is a reflective surface of light, and the third surface is an exit surface of light; the first lens has positive refractive power, a material side surface of the first lens is a convex surface, and an image side surface of the first lens is a convex surface; the second lens has positive refractive power, the third lens has negative refractive power, a material side surface of the third lens is a concave surface; an image side surface of the fourth lens is a concave surface; the number of lenses with refractive power in the optical camera lens is four; and a distance TZL on the first optical axis from a center of the material side surface of the first lens to the intersection of the first optical axis and the second optical axis, and an effective focal length f of the optical camera lens satisfy: 0.20 ≤ TZL / f ≤ 0.

25. a distance TZL on the first optical axis from a center of the material side surface of the first lens to the intersection of the first optical axis and the second optical axis, and a half of a diagonal line length of an effective pixel area on an imaging surface of the optical camera lens, ImgH, satisfy: 1.03 ≤ TZL / ImgH ≤ 1.

45. a distance TZL on the first optical axis from a center of the material side surface of the first lens to the intersection of the first optical axis and the second optical axis satisfies: 3.18 mm ≤ TZL < 4.5 mm. a distance TZL on the first optical axis from a center of the material side surface of the first lens to the intersection of the first optical axis and the second optical axis, and a distance TYL on the second optical axis from the intersection of the first optical axis and the second optical axis to the imaging surface of the optical camera lens satisfy: 0.16 ≤ TZL / TYL ≤ 0.

21. an effective focal length f of the optical camera lens and an effective focal length f1 of the first lens satisfy: 0.58 ≤ f / f1 < 0.

8. an effective focal length f2 of the second lens and an effective focal length f4 of the fourth lens satisfy: 0.58 ≤ f2 / |f4| ≤ 0.

70. an effective focal length f1 of the first lens and a combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 0.36 ≤ f1 / f234 ≤ 0.

85. a curvature radius R1 of the material side surface of the first lens and a curvature radius R2 of the image side surface of the first lens satisfy: -1.66 ≤ R2 / R1 < -0.

5. an effective focal length f4 of the fourth lens and a curvature radius R8 of the image side surface of the fourth lens satisfy: 0.26 ≤ R8 / |f4| < 1.

3.

2. The optical camera lens of claim 1, wherein, a center thickness CT1 of the first lens on the first optical axis and a center thickness CT2 of the second lens on the second optical axis satisfy: 0.4 < CT1 / CT2 ≤ 0.

74.

3. The optical camera lens of claim 1, wherein, ​ 4. The optical camera lens of claim 1, wherein, ​ 5. The optical camera lens of claim 1, wherein, ​ 6. The optical camera lens of claim 1, wherein, ​ 7. The optical camera lens of claim 1, wherein, ​ 8. The optical camera lens of claim 1, wherein, ​ 9. The optical camera lens of claim 1, wherein, ​ 10. The optical camera lens of claim 1, wherein, ​ 11. The optical camera lens of claim 1, wherein, A radius of curvature R5 of an object side surface of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy: 0.2 < |(R5-R6) / (R5+R6)| ≤ 1.

20.

12. The optical camera lens of claim 1, wherein, A central thickness CT3 of the third lens on the second optical axis, a central thickness CT4 of the fourth lens on the second optical axis, an air gap TP2 of the reflective element and the second lens on the second optical axis satisfy: 0.59 ≤ (CT3+CT4) / TP2 ≤ 0.

75.

13. The optical camera lens of claim 1, wherein, A distance BFL of the image side surface of the fourth lens to an imaging plane of the optical camera lens on the second optical axis, an air gap T34 of the third lens and the fourth lens on the second optical axis satisfy: 0.7 < BFL / T34 < 0.

9.

14. The optical camera lens of claim 1, wherein, A radius of curvature R3 of an object side surface of the second lens and a radius of curvature R4 of an image side surface of the second lens satisfy: 0.92 ≤ |(R3-R4) / (R3+R4)| ≤ 1.03.

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