Optical camera lens

Abstract

The application discloses an optical camera lens, which comprises, in order from the object side to the image side, a first lens with optical power, a second lens with positive optical power, a third lens with negative optical power, a fourth lens with positive optical power, a fifth lens with optical power, and a sixth lens with negative optical power; wherein the first lens is configured such that light incident on the first lens along a first optical axis is reflected and exits the second lens along a second optical axis perpendicular to the first optical axis; the second lens to the sixth lens are arranged in order from the first lens to the image side along the second optical axis; wherein the optical camera lens satisfies 1.3<|f1 / (R1+R2)|<13.5; 0.5<R1 / R2<1.3, wherein f1 is the effective focal length of the first lens, R1 is the curvature radius of the incident surface of the first lens, and R2 is the curvature radius of the exit surface of the first lens.

Description

Technical Field

[0005] ,

[0001] This application relates to the field of optical devices, and particularly to an optical camera lens. Background Art

[0002] With the rapid development of portable devices such as smart phones, consumers' requirements for camera lenses are also getting higher and higher. Medium and long focal length lenses have a long focal length and a small viewing angle. At the same distance, they can capture larger images than wide-angle lenses and large image plane lenses, and can more effectively blur the background and highlight the subject. The telephoto lens is a better choice for taking portrait photos and close-ups. At present, there are two forms of telephoto lenses: upright telephoto and periscope telephoto. Compared with traditional upright telephoto lenses, periscope telephoto lenses can achieve longer physical focal lengths and are widely used in portable devices.

[0003] Limited by the barrel height of the periscope telephoto lens, in related technologies, the proportion of the lens edge cutting in the barrel is relatively high, resulting in a large difference (i.e., surface shape astigmatism) in the vertical and horizontal directions after these lenses are formed, which affects the actual resolution of the periscope telephoto lens. Summary of the Invention

[0004] One aspect of this application provides an optical camera lens, which sequentially includes from the object side to the image side: a first lens with a focal power, including an incident surface and an exit surface, the incident surface is convex, and the exit surface is concave; a second lens with a positive focal power, its object side surface is convex; a third lens with a negative focal power, its object side surface is concave, and its image side surface is concave; a fourth lens with a positive focal power, its object side surface is convex, and its image side surface is convex; a fifth lens with a focal power, its object side surface is concave, and its image side surface is convex; and a sixth lens with a negative focal power, its image side surface is concave. Among them, the first lens is configured such that the light incident on the first lens along the direction of the first optical axis is reflected and then exits to the second lens along the second optical axis, and the second optical axis is perpendicular to the first optical axis; the second lens to the sixth lens are sequentially arranged along the second optical axis from the first lens to the image side; and the optical camera lens satisfies: 1.3 < |f1 / (R1 + R2)| < 13.5; 0.5 < R1 / R2 < 1.3, where f1 is the effective focal length of the first lens, R1 is the curvature radius of the incident surface of the first lens, and R2 is the curvature radius of the exit surface of the first lens.

[0005] The optical camera lens provided in the embodiments of this application enables the first lens to perform both the function of a traditional prism folding optical path and a portion of the optical power, acting as an effective imaging unit, thus serving multiple purposes. Furthermore, by satisfying the aforementioned conditions, the exit angle of light from the exit surface of the first lens can be reduced, and the incident height of the second lens can be lowered. This allows for miniaturization of the first lens group (comprising the second, third, and fourth lenses) while maintaining the same aperture, thus facilitating the miniaturization of the first lens group. On one hand, this meets structural requirements; on the other hand, it reduces the proportion of lens trimming required to accommodate the height of the lens barrel. This helps reduce the difference in the horizontal and vertical directions (i.e., the surface shape) caused by lens trimming after lens forming, ensuring lens forming accuracy and ultimately improving the actual resolving power of the optical camera lens.

[0006] Another aspect of this application provides an optical camera lens, which, from the object side to the image side, sequentially includes: a first lens having optical power, including an incident surface and an exit surface, the incident surface being convex and the exit surface being concave; a second lens having positive optical power, the object side of which is convex; a third lens having negative optical power, the object side of which is concave and the image side of which is concave; a fourth lens having positive optical power, the object side of which is convex and the image side of which is convex; a fifth lens having optical power, the object side of which is concave and the image side of which is convex; and a sixth lens having negative optical power, the image side of which is concave. The first lens is configured such that light incident on the first lens along the direction of the first optical axis is reflected and then exits along the second optical axis to the second lens, the second optical axis being perpendicular to the first optical axis; the second lens to the sixth lens are arranged sequentially along the second optical axis from the first lens to the image side; the fifth lens and the sixth lens constitute the second lens group, the second lens group being movable relative to the imaging surface of the optical camera lens on the second optical axis, so that the optical camera lens can switch between the first state and the second state.

[0007] Another aspect of the present application provides an optical imaging lens, which sequentially includes, from the object side to the image side: a first lens with a focal power, including an incident surface and an exit surface, the incident surface being convex and the exit surface being concave; a second lens with a positive focal power, the object side surface of which is convex; a third lens with a negative focal power, the object side surface of which is concave and the image side surface of which is concave; a fourth lens with a positive focal power, the object side surface of which is convex and the image side surface of which is convex; a fifth lens with a focal power, the object side surface of which is concave and the image side surface of which is convex; and a sixth lens with a negative focal power, the image side surface of which is concave. Among them, the first lens is configured such that the light incident on the first lens along the direction of the first optical axis is reflected and then exits to the second lens along the second optical axis, and the second optical axis is perpendicular to the first optical axis; the second lens to the sixth lens are sequentially arranged along the second optical axis from the first lens to the image side; and the optical imaging lens satisfies: 2.0 < R5 / f3 < 3.0, where f3 is the effective focal length of the third lens and R5 is the radius of curvature of the object side surface of the third lens.

[0008] In an exemplary embodiment, the fifth lens and the sixth lens form a second lens group, and the second lens group is movable relative to the imaging surface of the optical imaging lens on the second optical axis so that the optical imaging lens switches between a first state and a second state.

[0009] In an exemplary embodiment, the optical imaging lens further includes a filter element disposed on the image side of the sixth lens; and the optical imaging lens satisfies: 2.3 < T2t / T1t < 6.0, where T2t is the distance between the sixth lens and the filter element on the second optical axis in the first state, and T1t is the distance between the fourth lens and the fifth lens on the second optical axis in the first state.

[0010] In an exemplary embodiment, the optical imaging lens satisfies: 1.8 < |f56 / ft| + |f56 / fw| < 2.8, where fdu56 is the combined focal length of the fifth lens and the sixth lens, ft is the total effective focal length of the optical imaging lens in the first state, and fw is the total effective focal length of the optical imaging lens in the second state.

[0011] In an exemplary embodiment, the optical imaging lens satisfies: -6.0 < f56 / T1w < -4.0, where f56 is the combined focal length of the fifth lens and the sixth lens, and T1w is the distance between the fourth lens and the fifth lens on the second optical axis in the second state.

[0012] In an exemplary embodiment, the optical imaging lens satisfies: -1.3 < ft / f56 < -0.6, where f56 is the combined focal length of the fifth lens and the sixth lens, and ft is the total effective focal length of the optical imaging lens in the first state.

[0013] In an exemplary embodiment, the optical camera lens satisfies: -1.1 < R4 * R3 / (ft * f2) < 3.5, where R3 is the curvature radius of the object side surface of the second lens, R4 is the curvature radius of the image side surface of the second lens; ft is the total effective focal length of the optical camera lens in the first state; f2 is the effective focal length of the second lens.

[0014] In an exemplary embodiment, the optical camera lens satisfies: -0.05 < ft / f1 < 0.2, where ft is the total effective focal length of the optical camera lens in the first state, f1 is the effective focal length of the first lens.

[0015] In an exemplary embodiment, the optical camera lens satisfies: 2.0 < R5 / f3 < 3.0, where f3 is the effective focal length of the third lens, R5 is the curvature radius of the object side surface of the third lens.

[0016] In an exemplary embodiment, the optical camera lens satisfies: 0.2 < f2 / R1 < 0.4, where f2 is the effective focal length of the second lens, R1 is the curvature radius of the incident surface of the first lens.

[0017] In an exemplary embodiment, the optical camera lens satisfies: 1.0 < f2 / R3 < 1.7, where R3 is the curvature radius of the object side surface of the second lens, f2 is the effective focal length of the second lens.

[0018] In an exemplary embodiment, the optical camera lens satisfies: 3.0 < R2 / R3 < 8.5, where R2 is the curvature radius of the exit surface of the first lens, R3 is the curvature radius of the object side surface of the second lens.

[0019] In an exemplary embodiment, the optical camera lens satisfies: 0.8 < R6 * N3 / (R7 * N4) < 1.1, where R6 is the curvature radius of the image side surface of the third lens, R7 is the curvature radius of the object side surface of the fourth lens, N3 is the refractive index of the third lens, N4 is the refractive index of the fourth lens.

[0020] In an exemplary embodiment, the optical camera lens satisfies: -4.5 < R10 / R12 * (V5 / V6) < -1.0, where V5 is the Abbe number of the fifth lens, V6 is the Abbe number of the sixth lens, R10 is the curvature radius of the image side surface of the fifth lens, R12 is the curvature radius of the image side surface of the sixth lens.

[0021] In an exemplary embodiment, the optical camera lens satisfies: 2.0 < R5 / f3 < 3.0, where R5 is the curvature radius of the object side surface of the third lens, f3 is the effective focal length of the third lens.

[0022] In an exemplary embodiment, the optical camera lens satisfies: 0.4 < f3 / (R5 + R6) < 0.9, where R5 is the radius of curvature of the object side surface of the third lens, R6 is the radius of curvature of the image side surface of the third lens, and f3 is the effective focal length of the third lens.

[0023] In an exemplary embodiment, the optical camera lens satisfies: |f6 / (R11 + R12)| < 17, where f6 is the effective focal length of the sixth lens, R11 is the radius of curvature of the object side surface of the sixth lens, and R12 is the radius of curvature of the image side surface of the sixth lens.

[0024] In an exemplary embodiment, the optical camera lens satisfies: 58 < f4 / CT4 * V4 < 65, where f4 is the effective focal length of the fourth lens, CT4 is the central thickness of the fourth lens on the second optical axis, and V4 is the Abbe number of the fourth lens.

[0025] In an exemplary embodiment, the optical camera lens satisfies: 1.1 < |f2 / f3| * |f3 / f4| < 1.6, where f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, and f4 is the effective focal length of the fourth lens. Description of the Drawings

[0026] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. Among them:

[0027] Figure 1A Shows a schematic structural diagram of the optical camera lens according to an embodiment of the present application in a first state; Figure 1B Shows a schematic structural diagram of the optical camera lens according to an embodiment of the present application in a second state;

[0028] Figure 2 Shows a schematic structural diagram of the optical camera lens according to Embodiment 1 of the present application;

[0029] Figures 3A to 3D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical camera lens according to Embodiment 1 in the first state;

[0030] Figures 4A to 4D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical camera lens according to Embodiment 1 in the second state;

[0031] Figure 5 Shows a schematic structural diagram of the optical camera lens according to Embodiment 2 of the present application;

[0032] Figures 6A to 6DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Embodiment 2 in the first state are shown respectively.

[0033] Figures 7A to 7D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 2 are shown respectively.

[0034] Figure 8 A schematic diagram of the structure of an optical camera lens according to Embodiment 3 of this application is shown;

[0035] Figures 9A to 9D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Embodiment 3 in the first state are shown respectively.

[0036] 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 3 in the second state are shown respectively.

[0037] Figure 11 A schematic diagram of the structure of an optical camera lens according to Embodiment 4 of this application is shown;

[0038] 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 Embodiment 4 in the first state are shown respectively.

[0039] Figures 13A to 13D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Example 4 are shown respectively.

[0040] Figure 14 A schematic diagram of the structure of an optical camera lens according to Embodiment 5 of this application is shown;

[0041] Figures 15A to 15D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens of Embodiment 5 in its first state are shown respectively; and

[0042] Figures 16A to 16D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 5 are shown respectively. Detailed Implementation

[0043] 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.

[0044] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens, and the first optical axis may also be referred to as the second optical axis.

[0045] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0046] In this application, the paraxial region refers to the region near the optical axis. If the surface of a lens or other element is convex and the location of that convexity is not defined, it means that the surface of the lens or other element is convex at least in the paraxial region; if the surface of a lens or other element is concave and the location of that concaveness is not defined, it means that the surface of the lens or other element is concave at least in the paraxial region. The surface of each lens or other element closest to the object being photographed is called the object-side surface of the lens or other element, and the surface of each lens or other element closest to the image plane is called the image-side surface of the lens or other element.

[0047] It should also be understood that the terms "comprising" and / or "having," 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 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.

[0048] 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.

[0049] 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.

[0050] Figure 1A and Figure 1B A schematic diagram of the structure of an optical camera lens according to an embodiment of this application is shown. Figure 1Aand Figure 1B As shown, the optical camera lens provided in this application includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, and these six lenses can be arranged sequentially from the object side to the image side.

[0051] In an exemplary embodiment, the first lens has optical power and includes an incident surface and an exit surface. The incident surface may be convex, and the exit surface may be concave.

[0052] In an exemplary embodiment, the first lens may be a reflecting prism. The first lens may include an incident surface, a reflecting surface, and an exit surface. The first lens may be positioned at any desired angle to bend the light path. The first lens may be configured to deflect the incident light path by a predetermined degree (e.g., but not limited to 90°), for example, causing the incident light path to change from propagating along a first optical axis (e.g., optical axis 1) to propagating along a second optical axis (e.g., optical axis 2). The first optical axis and the second optical axis form a predetermined angle, for example, but not limited to, the first optical axis and the second optical axis being perpendicular. Furthermore, the reflecting surface passes through the intersection of the first optical axis and the second optical axis; that is, the reflecting surface is located on both the first optical axis and the second optical axis.

[0053] In an exemplary embodiment, the first lens can be a plastic prism, which can be integrally injection molded to reduce manufacturing costs.

[0054] In an exemplary embodiment, the first lens is configured such that light incident on the first lens along the direction of the first optical axis is reflected and then exits onto the second lens along the second optical axis, the second optical axis being perpendicular to the first optical axis. In an exemplary embodiment, the second to sixth lenses are arranged sequentially along the second optical axis from the first lens to the image side.

[0055] In an exemplary embodiment, the second lens has positive optical power, and its object-side surface can be convex. The third lens has negative optical power, and its object-side surface can be concave, as can its image-side surface. The fourth lens has positive optical power, and its object-side surface can be convex, as can its image-side surface. The fifth lens has optical power, and its object-side surface can be concave, as can its image-side surface. The sixth lens has negative optical power, and its image-side surface can be concave.

[0056] In an exemplary embodiment, both the incident and reflecting surfaces of the first lens can be aspherical. This arrangement allows the first lens to function as both a traditional prism folding optical path and a component of optical power, thus serving as an effective imaging unit—a multi-functional device. Since both surfaces of the first lens can be machined to different shapes, its resolving power can be improved.

[0057] In an exemplary embodiment, the optical camera lens may further include an aperture stop disposed between the first lens and the second lens.

[0058] In an exemplary embodiment, the optical camera lens may further include a filter element disposed on the image side of the sixth lens. The filter element may be, for example, a filter.

[0059] In an exemplary embodiment, light rays are incident on the first lens along the direction of the first optical axis, reflected by the first lens, and exit into the second lens along the second optical axis. Then, they pass through the third lens, the fourth lens, the fifth lens, the sixth lens, and the filter element to form an image on the imaging surface.

[0060] In an exemplary embodiment, the optical camera lens is a zoom lens.

[0061] In an exemplary embodiment, the second, third, and fourth lenses constitute a first lens group, and the fifth and sixth lenses constitute a second lens group. The first lens group is fixed in position relative to the imaging plane along the second optical axis. The second lens group is movable relative to the imaging plane along the second optical axis. When the subject moves from far to near the optical camera lens, by moving the second lens group, the optical camera lens can switch between a first state and a second state, thereby achieving zooming of the optical camera lens.

[0062] Figure 1A and Figure 1B Schematic diagrams of an optical camera lens according to embodiments of this application in a first state and a second state are shown respectively. The total effective focal length of the optical camera lens differs in the first state and the second state. Figure 1A and Figure 1B As shown, when the optical camera lens switches from the first state to the second state, the second lens group moves along the second optical axis away from the first lens group and closer to the imaging plane. When the optical camera lens switches from the second state to the first state, the second lens group moves along the second optical axis away from the imaging plane and closer to the first lens group. In an exemplary embodiment, the first state can be a telephoto state, where the optical camera lens can be adjusted to the first state when it is infinitely far from the subject. The second state can be a short-focus state, where the optical camera lens can be adjusted to the second state when it is at a predetermined distance from the subject, such as 100mm (macro).

[0063] In an exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens may all be disposed in the lens barrel.

[0064] In an exemplary embodiment, the optical camera lens satisfies: 1.3 < |f1 / (R1 + R2)| < 13.5; 0.5 < R1 / R2 < 1.3, where f1 is the effective focal length of the first lens, R1 is the radius of curvature of the incident surface of the first lens, and R2 is the radius of curvature of the exit surface of the first lens. By making the optical camera lens satisfy the above conditional formula, the exit angle of light through the exit surface of the first lens can be reduced, and the incident height of the second lens can be lowered, so as to compress the height of the first lens group as much as possible on the premise of unchanged aperture, which is beneficial to the miniaturization of the first lens group. On the one hand, it can meet the structural requirements, and on the other hand, it can also reduce the ratio of trimming the lenses of the first lens group to meet the height of the lens barrel for setting the first lens group, thereby facilitating the reduction of the difference (i.e., surface type astigmatism) between the horizontal and vertical directions after the lens is formed due to lens trimming, so as to ensure the forming accuracy of the lens, and further improve the actual resolution of the optical camera lens.

[0065] In an exemplary embodiment, the optical camera lens satisfies: 2.3 < T2t / T1t < 6.0, where T2t is the spacing distance (such as air spacing) between the sixth lens and the filter element on the second optical axis in the first state, and T1t is the spacing distance (such as air spacing) between the fourth lens and the fifth lens on the second optical axis in the first state. By making the optical camera lens satisfy the above conditional formula, the optical camera lens of the third lens can have good resolution both at an infinite object distance and at a macro distance.

[0066] In an exemplary embodiment, the optical camera lens satisfies: 2.0 < R5 / f3 < 3.0, where f3 is the effective focal length of the third lens, and R5 is the radius of curvature of the object side surface of the third lens. By making the optical camera lens satisfy the above conditional formula, the ratio of the maximum thickness to the minimum thickness of the third lens can be controlled within a reasonable processing range, which is beneficial to the injection molding of the third lens.

[0067] In an exemplary embodiment, the optical camera lens satisfies: 0.2 < f2 / R1 < 0.4, where f2 is the effective focal length of the second lens, and R1 is the radius of curvature of the incident surface of the first lens. The first lens of the present application has a focal power. By endowing the incident surface of the first lens with a focal power, the design freedom of the system can be increased, and at the same time, a relatively large focal power can be given to the second lens to converge light. By making the effective focal length of the second lens and the radius of curvature of the incident surface of the first lens satisfy the above conditional formula, the focal powers of the first lens and the second lens can be controlled, the resolution of the optical camera lens can be improved, the lens aperture can be reduced, and the miniaturization of the optical camera lens can be achieved while increasing the aperture of the optical camera lens.

[0068] In an exemplary embodiment, the optical camera lens satisfies: 1.8 < |f56 / ft| + |f56 / fw| < 2.8, where f56 is the combined focal length of the fifth lens and the sixth lens, ft is the total effective focal length of the optical camera lens in the first state, and fw is the total effective focal length of the optical camera lens in the second state. By making the optical camera lens satisfy the above conditional expression, the combined focal length of the fifth lens and the sixth lens can be controlled within a reasonable range to balance the aberration between the second lens group and other lenses at different positions, thereby improving the resolution of the optical camera lens at different zoom positions.

[0069] In an exemplary embodiment, the optical camera lens satisfies: -6.0 < f56 / T1w < -4.0, where f56 is the combined focal length of the fifth lens and the sixth lens, and T1w is the distance between the fourth lens and the fifth lens on the second optical axis in the second state. By making the optical camera lens satisfy the above conditional expression, the field curvature of the optical camera lens in the macro mode can be reduced, and the macro axial value can be improved.

[0070] In an exemplary embodiment, the optical camera lens satisfies: -1.3 < ft / f56 < -0.6, where f56 is the combined focal length of the fifth lens and the sixth lens, and ft is the total effective focal length of the optical camera lens in the first state. By making the optical camera lens satisfy the above conditional expression, positive spherical aberration can be generated by reasonably controlling the combined focal length of the fifth lens and the sixth lens, and the positive spherical aberration can be balanced with the negative spherical aberration generated by other lenses, so that the imaging quality of the optical camera lens on the second optical axis is good.

[0071] In an exemplary embodiment, the optical camera lens satisfies: 1.0 < f2 / R3 < 1.7, where R3 is the curvature radius of the object side surface of the second lens, and f2 is the effective focal length of the second lens. By making the optical camera lens satisfy the above conditional expression, the height of the light entering the second lens can be reduced, and further the aperture of the second lens can be reduced to meet the structural requirements.

[0072] In an exemplary embodiment, the optical camera lens satisfies: -1.1 < R4*R3 / (ft*f2) < 3.5, where R3 is the curvature radius of the object side surface of the second lens, R4 is the curvature radius of the image side surface of the second lens; ft is the maximum focal length of the optical camera lens; f2 is the effective focal length of the second lens. By making the optical camera lens satisfy the above conditional expression, the trend of the light after entering the second lens can be made smoother, which is beneficial to reducing the incident height of the light entering the subsequent lenses, and further reducing the size of the second lens group composed of the fifth lens and the sixth lens.

[0073] In an exemplary embodiment, the optical camera lens satisfies: -0.05 < ft / f1 < 0.2, where ft is the total effective focal length of the optical camera lens in the first state, and f1 is the effective focal length of the first lens. In the present application, the first lens can serve as the first lens. The first lens (such as a plastic prism) has a small optical power, which can increase the design freedom. By controlling the ratio of the maximum focal length of the optical camera lens to the effective focal length of the first lens within the above range, it helps to reduce the aberration of the system and improve the resolution of the optical camera lens.

[0074] In an exemplary embodiment, the optical camera lens satisfies: 3.0 < R2 / R3 < 8.5, where R2 is the radius of curvature of the exit surface of the first lens, and R3 is the radius of curvature of the object side surface of the second lens. By making the optical camera lens satisfy the above conditional formula, the height of the light entering the second lens can be reduced. On the premise of ensuring a large aperture, the incident height of the light entering the subsequent lenses can be reduced, so as to reduce the size of the second lens group composed of the fifth lens and the sixth lens, and further reduce the proportion of trimming the lenses of the first lens group for the height of the lens barrel where the first lens group is arranged.

[0075] In an exemplary embodiment, the optical camera lens satisfies: 0.8 < R6*N3 / (R7*N4) < 1.1, where R6 is the radius of curvature of the image side surface of the third lens, R7 is the radius of curvature of the object side surface of the fourth lens, N3 is the refractive index of the third lens, and N4 is the refractive index of the fourth lens. By making the optical camera lens satisfy the above conditional formula, that is, by reasonably selecting the materials of the third lens and the fourth lens and using the third lens and the fourth lens with high and low refractive indices in combination, chromatic aberration can be offset and the imaging quality of the optical camera lens can be improved.

[0076] In an exemplary embodiment, the optical camera lens satisfies: -4.5 < R10 / R12*(V5 / V6) < -1.0, where V5 is the Abbe number of the fifth lens, V6 is the Abbe number of the sixth lens, R10 is the radius of curvature of the image side surface of the fifth lens, and R12 is the radius of curvature of the image side surface of the sixth lens. By making the optical camera lens satisfy the above conditional formula, that is, by reasonably selecting the materials of the fifth lens and the sixth lens and making the Abbe numbers of the fifth lens and the sixth lens be reasonably distributed, the off-axis chromatic aberration generated by the second lens, the third lens and the fourth lens can be balanced when the fifth lens and the sixth lens are used in combination, and the imaging quality can be improved.

[0077] In an exemplary embodiment, the optical camera lens satisfies: 2.0 < R5 / f3 < 3.0, where R5 is the radius of curvature of the object side surface of the triple lens, and f3 is the effective focal length of the third lens. By making the optical camera lens satisfy the above conditional formula, it is beneficial to reduce the difference amount (i.e., surface type astigmatism) in the horizontal and vertical directions after the lens is formed due to lens trimming, and avoid affecting the imaging quality.

[0078] In an exemplary embodiment, the optical imaging lens satisfies: 0.4 < f3 / (R5 + R6) < 0.9, where R5 is the radius of curvature of the object side surface of the third lens, R6 is the radius of curvature of the image side surface of the third lens, and f3 is the effective focal length of the third lens. By making the optical imaging lens satisfy the above conditional expression, the bending shape of the third lens can be controlled, the ratio of the maximum thickness to the minimum thickness of the third lens can be reduced, and the processability of the third lens can be improved.

[0079] In an exemplary embodiment, the optical imaging lens satisfies: |f6 / (R11 + R12)| < 17, where f6 is the effective focal length of the sixth lens, R11 is the radius of curvature of the object side surface of the sixth lens, and R12 is the radius of curvature of the image side surface of the sixth lens. By making the optical imaging lens satisfy the above conditional expression, the field curvature of the optical imaging lens at different focal lengths can be reduced, and the axial resolution of the optical imaging lens can be improved.

[0080] In an exemplary embodiment, the optical imaging lens satisfies: 58 < f4 / CT4*V4 < 65, where f4 is the effective focal length of the fourth lens, CT4 is the central thickness of the fourth lens on the second optical axis, and V4 is the Abbe number of the fourth lens. By making the optical imaging lens satisfy the above conditional expression, the surface decentration sensitivity of the fourth lens can be reduced, and the assembly yield of the optical imaging lens can be improved.

[0081] In an exemplary embodiment, the optical imaging lens satisfies: 1.1 < |f2 / f3|*|f3 / f4| < 1.6, where f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, and f4 is the effective focal length of the fourth lens. By making the optical imaging lens satisfy the above conditional expression, the optical power of the second lens, the third lens, and the fourth lens can be reasonably distributed, so that the optical imaging lens has good imaging quality and effectively reduces the sensitivity of the optical imaging lens.

[0082] In an exemplary embodiment, at least one of the surfaces of each lens from the second lens to the sixth lens is an aspherical surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better radius of curvature characteristics and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, the aberration that appears during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, both the object side surface and the image side surface of each lens from the second lens to the sixth lens are aspherical surfaces.

[0083] Another aspect of the present application provides an optical imaging lens, which sequentially includes from the object side to the image side: a first lens with a focal power, including an incident surface and an exit surface, the incident surface being convex and the exit surface being concave; a second lens with a positive focal power, a third lens with a negative focal power, a fourth lens with a positive focal power, a fifth lens with a focal power, and a sixth lens with a negative focal power; wherein, the first lens is configured such that light incident on the first lens along the direction of the first optical axis is reflected and exits to the second lens along the second optical axis, and the second optical axis is perpendicular to the first optical axis; the second lens to the sixth lens are sequentially arranged along the second optical axis from the first lens to the image side; the fifth lens and the sixth lens form a second lens group, and the second lens group is movable relative to the imaging surface of the optical imaging lens on the second optical axis so that the optical imaging lens can switch between a first state and a second state.

[0084] Another aspect of the present application provides an optical imaging lens, which sequentially includes from the object side to the image side: a first lens with a focal power, including an incident surface and an exit surface, the incident surface being convex and the exit surface being concave; a second lens with a positive focal power, a third lens with a negative focal power, a fourth lens with a positive focal power, a fifth lens with a focal power, and a sixth lens with a negative focal power; wherein, the first lens is configured such that light incident on the first lens along the direction of the first optical axis is reflected and exits to the second lens along the second optical axis, and the second optical axis is perpendicular to the first optical axis; the second lens to the sixth lens are sequentially arranged along the second optical axis from the first lens to the image side; and the optical imaging lens satisfies: 2.0 < R5 / f3 < 3.0, where f3 is the effective focal length of the third lens and R5 is the curvature radius of the object side surface of the third lens.

[0085] Those skilled in the art should understand that, without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification.

[0086] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0087] Example 1

[0088] The following refers to Figures 2 to 4D Describe the optical imaging lens according to Embodiment 1 of the present application.

[0089] As Figure 2 shown, the optical imaging lens sequentially includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6 from the object side to the image side. The aperture stop STO can be disposed between the first lens E1 and the second lens E2.

[0090] The first lens E1 has positive optical power and has an incident surface S1, a reflecting surface, and an exit surface S2, wherein the incident surface S1 is convex and the exit surface S2 is concave. The second lens E2 has positive optical power, with both its object-side surface S3 and image-side surface S4 being convex. The third lens E3 has negative optical power, with both its object-side surface S5 and image-side surface S6 being concave. The fourth lens E4 has positive optical power, with both its object-side surface S7 and image-side surface S8 being convex. The fifth lens E5 has negative optical power, with both its object-side surface S9 and image-side surface S10 being convex. The sixth lens E6 has negative optical power, with both its object-side surface S11 and image-side surface S12 being concave. The filter element has an object-side surface S13 and an image-side surface S14.

[0091] Light emitted along optical axis 1 reaches the first lens E1, is reflected by the first lens, and then emitted along optical axis 2 into the second lens E2. It then passes through the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and finally forms an image on the imaging surface S15 via a filter element. In other words, light from the object passes sequentially through surfaces S1 to S14 and is ultimately imaged on the imaging surface S15. The second to sixth lenses are arranged sequentially along the second optical axis from the first lens to the image side.

[0092] Table 1 shows the basic parameters of the optical camera lens of Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0093]

[0094] Table 1

[0095] In this embodiment, the second lens E2, the third lens E3, and the fourth lens E4 constitute the first lens group, and the fifth lens E5 and the sixth lens E6 constitute the second lens group. The first lens group is fixed in position relative to the imaging plane on the optical axis 2. The second lens group can move relative to the first lens group along the optical axis 2 to achieve zoom of the optical camera lens. Specifically, the second lens group moves along the optical axis 2 between the fourth lens E4 and the imaging plane S15 to achieve zoom of the optical camera lens. Therefore, the distance T1 along the optical axis 2 between the image-side surface S8 of the fourth lens E4 and the object-side surface S9 of the fifth lens E5, and the distance T2 along the optical axis 2 between the image-side surface S12 of the sixth lens E6 and the object-side surface S11 of the filter element, are variable. Figure 1A and Figure 1B Schematic diagrams of the optical camera lens according to embodiments of this application in a first state and a second state are shown respectively. (See Figure 1 and...) Figure 1BAs shown, when the optical camera lens switches from the first state to the second state, the second lens group moves along the optical axis 2 in a direction away from the first lens group and closer to the imaging surface S15. When the optical camera lens switches from the second state to the first state, the second lens group moves along the optical axis 2 in a direction away from the imaging surface S15 and closer to the first lens group.

[0096] Table 2 shows the values ​​of parameters in the first and second states for the following parameters in Example 1: distance U between the subject and the optical camera lens, half of the maximum field of view (Semi-FOV) of the optical camera lens, aperture number Fno of the optical camera lens, total effective focal length f of the optical camera lens, spacing T1 between the fourth and fifth lenses on the second optical axis, and spacing T2 between the sixth lens and the filter element on the second optical axis.

[0097] Optical parameters First state Second state U(mm) Infinity 100 Semi-FOV (°) 14.3272 14.8257 Fno 1.98 1.59 f(mm) 17.6067 14.0705 T1(mm) 1.124 4.2795 T2(mm) 3.5652 0.4098

[0098] Table 2

[0099] In this embodiment, the object-side surface and image-side surface of any one of the following lenses, from the first lens E1 (S1 and S2) to the sixth lens E6, are aspherical. The surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0100]

[0101] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Tables 3-1 and 3-2 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical surfaces S1-S12 in Example 1.

[0102] Face number A4 A6 A8 A10 S1 2.7671E-02 5.6241E-04 5.4564E-05 -4.5642E-06 S2 -2.8251E-02 1.9837E-02 -2.2286E-03 1.0358E-03 S3 -3.5477E-01 -9.1645E-03 -6.6211E-03 2.0993E-03 S4 6.8416E-01 -1.7408E-01 3.2573E-02 -1.9393E-03 S5 9.1135E-01 -2.0310E-01 5.4364E-02 -9.9338E-03 S6 -5.6569E-01 4.6475E-02 -6.0786E-03 2.0444E-03 S7 -1.0973E+00 1.2843E-02 -3.4330E-02 1.7615E-03 S8 1.3233E-01 1.1298E-02 1.8891E-03 3.4532E-04 S9 1.7031E+00 -4.1417E-02 4.1491E-02 1.3711E-03 S10 1.3322E+00 -1.5105E-01 3.4978E-02 -1.1223E-02 S11 -3.8115E-01 -6.8389E-02 1.7294E-02 -9.4466E-03 S12 -1.1630E+00 5.4738E-02 -1.6654E-02 3.3549E-03

[0103] Table 3-1

[0104] Face number A12 A14 A16 A18 A20 S1 -1.4800E-05 -2.4427E-06 -2.6909E-06 1.5992E-06 1.2878E-06 S2 -5.2268E-04 4.0961E-04 -3.3616E-04 1.3335E-04 -1.9386E-05 S3 -1.5537E-03 1.0457E-03 -6.4599E-04 4.4286E-05 5.5262E-05 S4 -2.2470E-03 1.6775E-03 -1.0136E-03 1.0834E-04 1.3910E-04 S5 9.4628E-04 1.7377E-04 -1.5033E-04 -1.0869E-04 1.3822E-04 S6 -9.3375E-04 1.0948E-04 1.6079E-04 -1.1867E-04 3.3486E-05 S7 -3.0582E-03 -2.5062E-05 -1.5891E-04 -4.9363E-05 -3.2114E-05 S8 8.0498E-05 -1.8003E-05 4.9805E-07 -5.6690E-06 -1.9602E-06 S9 2.6438E-03 5.2083E-04 1.9714E-04 9.1262E-05 8.7969E-06 S10 3.3703E-03 -1.1716E-03 4.8198E-04 -1.3949E-04 7.4513E-05 S11 2.9004E-03 -1.2292E-03 5.0338E-04 -1.4938E-04 9.0815E-05 S12 -1.1516E-03 4.7913E-04 -1.3887E-04 8.1943E-05 -4.8438E-06

[0105] Table 3-2

[0106] Figures 3A to 3D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the first state of Embodiment 1 are shown respectively. Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 1 are shown respectively. According to... Figures 3A to 4DIt can be seen that the optical camera lens of Embodiment 1 can have good imaging quality whether it is in the first state or the second state.

[0107] Example 2

[0108] The following is for reference Figures 5 to 7D Describes an optical camera lens according to Embodiment 2 of this application.

[0109] like Figure 5 As shown, the optical camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An aperture stop STO can be positioned between the first lens E1 and the second lens E2.

[0110] The first lens E1 has negative optical power and has an incident surface S1, a reflecting surface, and an exit surface S2, wherein the incident surface S1 is convex and the exit surface S2 is concave. The second lens E2 has positive optical power, with both its object-side surface S3 and image-side surface S4 being convex. The third lens E3 has negative optical power, with both its object-side surface S5 and image-side surface S6 being concave. The fourth lens E4 has positive optical power, with both its object-side surface S7 and image-side surface S8 being convex. The fifth lens E5 has positive optical power, with both its object-side surface S9 and image-side surface S10 being convex. The sixth lens E6 has negative optical power, with both its object-side surface S11 being convex and its image-side surface S12 being concave. The filter element has an object-side surface S13 and an image-side surface S14.

[0111] Light emitted along optical axis 1 reaches the first lens E1, is reflected by the first lens, and then emitted along optical axis 2 into the second lens E2. It then passes through the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and finally forms an image on the imaging surface S15 via a filter element. In other words, light from the object passes sequentially through surfaces S1 to S14 and is ultimately imaged on the imaging surface S15. The second to sixth lenses are arranged sequentially along the second optical axis from the first lens to the image side.

[0112] Table 4 shows the basic parameters of the optical camera lens of Example 2, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0113]

[0114]

[0115] Table 4

[0116] In this embodiment, the second lens E2, the third lens E3, and the fourth lens E4 constitute the first lens group, and the fifth lens E5 and the sixth lens E6 constitute the second lens group. The first lens group is fixed in position relative to the imaging plane on the optical axis 2. The second lens group can move relative to the first lens group along the optical axis 2 to achieve zooming of the optical camera lens. Specifically, the second lens group moves along the optical axis 2 between the fourth lens E4 and the imaging plane S15 to achieve zooming of the optical camera lens. Therefore, the distance T1 between the image-side surface S8 of the fourth lens E4 and the object-side surface S9 of the fifth lens E5 along the optical axis 2, and the distance T2 between the image-side surface S12 of the sixth lens E6 and the object-side surface S11 of the filter element along the optical axis 2, are variable. When the optical camera lens switches from the first state to the second state, the second lens group moves along the optical axis 2 in a direction away from the first lens group and closer to the imaging plane S15. When the optical camera lens switches from the second state to the first state, the second lens group moves along the optical axis 2 in a direction away from the imaging plane S15 and closer to the first lens group.

[0117] Table 5 shows the values ​​of parameters in the first and second states for the following parameters in Example 2: distance U between the subject and the optical camera lens, half of the maximum field of view (Semi-FOV) of the optical camera lens, aperture number Fno of the optical camera lens, total effective focal length f of the optical camera lens, spacing T1 between the fourth and fifth lenses on the second optical axis, and spacing T2 between the sixth lens and the filter element on the second optical axis.

[0118] Optical parameters First state Second state U(mm) Infinity 100 Semi-FOV (°) 14.7215 15.1005 Fno 1.95 1.59 f(mm) 17.27 14.05 T1(mm) 1.74 3.71 T2(mm) 5.04 0.41

[0119] Table 5

[0120] In this embodiment, the object-side surface and image-side surface of any one of the following lenses, E2 to E6, are aspherical, and the surface shape x of each aspherical lens can be calculated using, but is not limited to, the formula in Embodiment 1. Tables 6-1 and 6-2 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S1-S12 in Embodiment 2.

[0121]

[0122]

[0123] Table 6-1

[0124] Face number A12 A14 A16 A18 A20 S1 -4.6802E-06 1.0749E-06 1.2268E-06 -7.3133E-07 7.9496E-08 S2 -8.7043E-04 5.4657E-04 -2.6446E-04 8.9294E-05 -1.2277E-05 S3 -2.5459E-03 8.2681E-04 -1.8006E-04 -5.3847E-05 1.9703E-05 S4 -3.2500E-03 1.4970E-03 -7.4348E-04 -1.3407E-05 5.7805E-05 S5 1.5008E-03 -1.2519E-04 -1.1633E-04 -5.3255E-05 2.5722E-05 S6 4.1482E-04 -2.4841E-04 9.1786E-05 -2.9416E-05 5.0737E-06 S7 -1.4480E-03 1.7965E-04 -9.6612E-05 9.8728E-06 -9.4853E-06 S8 2.2408E-05 -1.7712E-05 9.3084E-06 -2.3316E-06 2.3116E-07 S9 1.1730E-03 -1.1284E-04 5.1143E-05 -2.9666E-06 6.7620E-06 S10 5.2832E-03 -1.8827E-03 6.3371E-04 -1.7155E-04 2.4752E-05 S11 6.0739E-03 -2.5105E-03 9.3286E-04 -3.2759E-04 8.4412E-05 S12 -1.4078E-04 3.7730E-05 4.3192E-05 -1.1286E-05 2.0006E-05

[0125] Table 6-2

[0126] Figures 6A to 6DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the first state of Embodiment 2 are shown respectively. Figures 7A to 7D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 2 are shown respectively. According to... Figures 6A to 7D It can be seen that the optical camera lens of Embodiment 2 can have good imaging quality whether it is in the first state or the second state.

[0127] Example 3

[0128] The following is for reference Figures 8 to 10D Describes an optical camera lens according to Embodiment 3 of this application.

[0129] like Figure 8 As shown, the optical camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An aperture stop STO can be positioned between the first lens E1 and the second lens E2.

[0130] The first lens E1 has positive optical power and has an incident surface S1, a reflecting surface, and an exit surface S2, wherein the incident surface S1 is convex and the exit surface S2 is concave. The second lens E2 has positive optical power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The third lens E3 has negative optical power, its object-side surface S5 is concave, and its image-side surface S6 is concave. The fourth lens E4 has positive optical power, its object-side surface S7 is convex, and its image-side surface S8 is convex. The fifth lens E5 has negative optical power, its object-side surface S9 is concave, and its image-side surface S10 is convex. The sixth lens E6 has negative optical power, its object-side surface S11 is convex, and its image-side surface S12 is concave. The filter element has an object-side surface S13 and an image-side surface S14.

[0131] Light emitted along optical axis 1 reaches the first lens E1, is reflected by the first lens, and then emitted along optical axis 2 into the second lens E2. It then passes through the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and finally forms an image on the imaging surface S15 via a filter element. In other words, light from the object passes sequentially through surfaces S1 to S14 and is ultimately imaged on the imaging surface S15. The second to sixth lenses are arranged sequentially along the second optical axis from the first lens to the image side.

[0132] Table 7 shows the basic parameters of the optical camera lens of Example 3, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0133]

[0134]

[0135] Table 7

[0136] In this embodiment, the second lens E2, the third lens E3, and the fourth lens E4 constitute the first lens group, and the fifth lens E5 and the sixth lens E6 constitute the second lens group. The first lens group is fixed in position relative to the imaging plane on the optical axis 2. The second lens group can move relative to the first lens group along the optical axis 2 to achieve zooming of the optical camera lens. Specifically, the second lens group moves along the optical axis 2 between the fourth lens E4 and the imaging plane S15 to achieve zooming of the optical camera lens. Therefore, the distance T1 between the image-side surface S8 of the fourth lens E4 and the object-side surface S9 of the fifth lens E5 along the optical axis 2, and the distance T2 between the image-side surface S12 of the sixth lens E6 and the object-side surface S11 of the filter element along the optical axis 2, are variable. When the optical camera lens switches from the first state to the second state, the second lens group moves along the optical axis 2 in a direction away from the first lens group and closer to the imaging plane S15. When the optical camera lens switches from the second state to the first state, the second lens group moves along the optical axis 2 in a direction away from the imaging plane S15 and closer to the first lens group.

[0137] Table 8 shows the values ​​of parameters in the first and second states for the following parameters in Example 3: distance U between the subject and the optical camera lens, half of the maximum field of view (Semi-FOV) of the optical camera lens, aperture number Fno of the optical camera lens, total effective focal length f of the optical camera lens, spacing T1 between the fourth and fifth lenses on the second optical axis, and spacing T2 between the sixth lens and the filter element on the second optical axis.

[0138] Optical parameters First state Second state OBJ(mm) Infinity 100 Semi-FOV (°) 13.9266 14.5404 Fno 2.03 1.66 f(mm) 18.11 14.49 T1(mm) 0.84 4.34 T2(mm) 4.64 0.55

[0139] Table 8

[0140] In this embodiment, the object-side surface and image-side surface of any one of the following lenses, E2 to E6, are aspherical, and the surface shape x of each aspherical lens can be calculated using, but is not limited to, the formula in Embodiment 1. Tables 9-1 and 9-2 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, and A22 that can be used for each aspherical surface S1-S12 in Embodiment 3.

[0141]

[0142]

[0143] Table 9-1

[0144] Face number A14 A16 A18 A20 A22 S1 -8.8072E-06 -8.6123E-07 2.3121E-06 3.4555E-06 0.0000E+00 S2 -3.4469E-05 -1.3376E-05 1.5531E-05 -5.9831E-06 0.0000E+00 S3 6.6707E-04 -4.0976E-05 -5.8629E-05 1.2441E-05 4.3698E-07 S4 1.9135E-03 -3.6207E-04 -1.6846E-04 5.5971E-05 0.0000E+00 S5 8.0326E-04 -2.4737E-04 -9.9292E-05 3.7562E-05 0.0000E+00 S6 -3.9813E-05 -3.7812E-04 -2.2434E-05 -1.1909E-05 -1.7645E-05 S7 3.3458E-04 -1.3197E-04 4.5064E-06 5.1605E-07 0.0000E+00 S8 -4.1091E-06 -6.1059E-06 -4.8588E-06 -1.6080E-06 0.0000E+00 S9 5.5122E-04 1.4552E-04 8.6749E-05 5.8373E-06 0.0000E+00 S10 -2.3138E-04 9.0768E-05 5.0800E-07 -8.5624E-06 0.0000E+00 S11 -3.7348E-04 1.5398E-04 -9.3962E-06 8.0303E-06 0.0000E+00 S12 6.0058E-04 -1.6682E-04 9.4708E-05 -2.6972E-05 0.0000E+00

[0145] Table 9-2

[0146] Figures 9A to 9D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the first state of Embodiment 3 are shown respectively. Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 3 are shown respectively. According to... Figures 9A to 10D It can be seen that the optical camera lens of Embodiment 3 can have good imaging quality whether it is in the first state or the second state.

[0147] Example 4

[0148] The following is for reference Figures 11 to 13D The optical camera lens according to Embodiment 4 of this application is described.

[0149] like Figure 11 As shown, the optical camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An aperture stop STO can be positioned between the first lens E1 and the second lens E2.

[0150] The first lens E1 has positive optical power and has an incident surface S1, a reflecting surface, and an exit surface S2, wherein the incident surface S1 is convex and the exit surface S2 is concave. The second lens E2 has positive optical power, with both its object-side surface S3 and image-side surface S4 being convex. The third lens E3 has negative optical power, with both its object-side surface S5 and image-side surface S6 being concave. The fourth lens E4 has positive optical power, with both its object-side surface S7 and image-side surface S8 being convex. The fifth lens E5 has negative optical power, with both its object-side surface S9 and image-side surface S10 being convex. The sixth lens E6 has negative optical power, with both its object-side surface S11 and image-side surface S12 being concave. The filter element has an object-side surface S13 and an image-side surface S14.

[0151] Light emitted along optical axis 1 reaches the first lens E1, is reflected by the first lens, and then emitted along optical axis 2 into the second lens E2. It then passes through the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and finally forms an image on the imaging surface S15 via a filter element. In other words, light from the object passes sequentially through surfaces S1 to S14 and is ultimately imaged on the imaging surface S15. The second to sixth lenses are arranged sequentially along the second optical axis from the first lens to the image side.

[0152] Table 10 shows the basic parameters of the optical camera lens of Example 4, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0153]

[0154] Table 10

[0155] In this embodiment, the second lens E2, the third lens E3, and the fourth lens E4 constitute the first lens group, and the fifth lens E5 and the sixth lens E6 constitute the second lens group. The first lens group is fixed in position relative to the imaging plane on the optical axis 2. The second lens group can move relative to the first lens group along the optical axis 2 to achieve zooming of the optical camera lens. Specifically, the second lens group moves along the optical axis 2 between the fourth lens E4 and the imaging plane S15 to achieve zooming of the optical camera lens. Therefore, the distance T1 between the image-side surface S8 of the fourth lens E4 and the object-side surface S9 of the fifth lens E5 along the optical axis 2, and the distance T2 between the image-side surface S12 of the sixth lens E6 and the object-side surface S11 of the filter element along the optical axis 2, are variable. When the optical camera lens switches from the first state to the second state, the second lens group moves along the optical axis 2 in a direction away from the first lens group and closer to the imaging plane S15. When the optical camera lens switches from the second state to the first state, the second lens group moves along the optical axis 2 in a direction away from the imaging plane S15 and closer to the first lens group.

[0156] Table 11 shows the values ​​of parameters in the first and second states for the following parameters in Example 4: distance U between the subject and the optical camera lens, half of the maximum field of view (Semi-FOV) of the optical camera lens, aperture number Fno of the optical camera lens, total effective focal length f of the optical camera lens, spacing T1 between the fourth and fifth lenses on the second optical axis, and spacing T2 between the sixth lens and the filter element on the second optical axis.

[0157]

[0158] Table 11

[0159] In this embodiment, the object-side surface and image-side surface of any one of the following lenses, E2 to E6, are aspherical, and the surface shape x of each aspherical lens can be calculated using, but is not limited to, the formula in Embodiment 1. Tables 12-1 and 12-2 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, and A22 that can be used for each aspherical surface S1-S12 in Embodiment 4.

[0160] Face number A4 A6 A8 A10 A12 S1 2.9567E-02 1.0266E-03 3.2863E-05 -8.9131E-06 -5.9299E-06 S2 -2.3226E-02 2.1843E-02 -1.8349E-03 4.5074E-04 1.8534E-04 S3 -4.2355E-01 -1.6670E-02 -7.1882E-03 1.0774E-03 2.8543E-04 S4 7.2312E-01 -1.9352E-01 3.7956E-02 -2.9725E-03 -9.7469E-04 S5 9.6412E-01 -2.1624E-01 6.3427E-02 -1.2083E-02 9.1810E-04 S6 -7.1615E-01 6.6871E-02 -8.6655E-03 2.3051E-03 -1.7343E-03 S7 -1.3234E+00 4.9022E-03 -4.9116E-02 -6.8754E-04 -5.3352E-03 S8 1.7323E-01 2.0370E-02 3.7618E-03 8.7566E-04 2.2169E-04 S9 1.1400E+00 -6.8997E-02 1.6053E-02 -2.2607E-03 4.8860E-04 S10 9.9535E-01 -1.0747E-01 2.3463E-02 -9.2007E-03 2.5985E-03 S11 -4.5503E-01 -5.2250E-02 9.9532E-03 -7.7573E-03 1.9127E-03 S12 -1.1046E+00 3.9689E-02 -1.4184E-02 2.2880E-03 -8.3336E-04

[0161] Table 12-1

[0162] Face number A14 A16 A18 A20 A22 S1 -7.2560E-06 -7.8549E-08 1.0153E-06 4.4917E-06 0.0000E+00 S2 -5.6611E-05 -1.1626E-05 1.4734E-05 -1.0689E-05 0.0000E+00 S3 5.0144E-04 -1.7082E-04 4.9495E-06 5.6949E-06 0.0000E+00 S4 1.5549E-03 -7.3096E-04 -5.3852E-05 7.6387E-05 0.0000E+00 S5 7.5619E-04 -5.1639E-04 -8.7917E-05 7.7219E-05 0.0000E+00 S6 9.9946E-04 -4.3115E-04 9.1412E-05 -5.2633E-06 -2.2078E-07 S7 -1.8177E-04 -6.1299E-04 -1.0041E-04 -8.7453E-05 -8.9511E-05 S8 -1.9843E-05 4.4503E-06 -1.6032E-05 1.9606E-07 0.0000E+00 S9 -4.1522E-05 2.7440E-06 8.3960E-06 -1.5693E-06 0.0000E+00 S10 -1.1681E-03 5.0424E-04 -1.6522E-04 6.7302E-05 0.0000E+00 S11 -1.1105E-03 4.2068E-04 -1.4505E-04 6.7138E-05 0.0000E+00 S12 3.5249E-04 -8.2973E-05 5.0667E-05 -1.4535E-05 0.0000E+00

[0163] Table 12-2

[0164] Figures 12A to 12DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the first state of Embodiment 4 are shown respectively. Figures 13A to 13D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 4 are shown respectively. According to... Figures 12A to 13D It can be seen that the optical camera lens of Example 4 can have good imaging quality whether it is in the first state or the second state.

[0165] Example 5

[0166] The following is for reference Figures 14 to 16D Describes an optical camera lens according to Embodiment 5 of this application.

[0167] like Figure 14 As shown, the optical camera lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. An aperture stop STO can be positioned between the first lens E1 and the second lens E2.

[0168] The first lens E1 has positive optical power and has an incident surface S1, a reflecting surface, and an exit surface S2, wherein the incident surface S1 is convex and the exit surface S2 is concave. The second lens E2 has positive optical power, with both its object-side surface S3 and image-side surface S4 being convex. The third lens E3 has negative optical power, with both its object-side surface S5 and image-side surface S6 being concave. The fourth lens E4 has positive optical power, with both its object-side surface S7 and image-side surface S8 being convex. The fifth lens E5 has negative optical power, with both its object-side surface S9 and image-side surface S10 being convex. The sixth lens E6 has negative optical power, with both its object-side surface S11 and image-side surface S12 being concave. The filter element has an object-side surface S13 and an image-side surface S14.

[0169] Light emitted along optical axis 1 reaches the first lens E1, is reflected by the first lens, and then emitted along optical axis 2 into the second lens E2. It then passes through the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, and finally forms an image on the imaging surface S15 via a filter element. In other words, light from the object passes sequentially through surfaces S1 to S14 and is ultimately imaged on the imaging surface S15. The second to sixth lenses are arranged sequentially along the second optical axis from the first lens to the image side.

[0170] Table 13 shows the basic parameters of the optical camera lens of Example 5, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0171]

[0172] Table 13

[0173] In this embodiment, the second lens E2, the third lens E3, and the fourth lens E4 constitute the first lens group, and the fifth lens E5 and the sixth lens E6 constitute the second lens group. The first lens group is fixed in position relative to the imaging plane on the optical axis 2. The second lens group can move relative to the first lens group along the optical axis 2 to achieve zooming of the optical camera lens. Specifically, the second lens group moves along the optical axis 2 between the fourth lens E4 and the imaging plane S15 to achieve zooming of the optical camera lens. Therefore, the distance T1 between the image-side surface S8 of the fourth lens E4 and the object-side surface S9 of the fifth lens E5 along the optical axis 2, and the distance T2 between the image-side surface S12 of the sixth lens E6 and the object-side surface S11 of the filter element along the optical axis 2, are variable. When the optical camera lens switches from the first state to the second state, the second lens group moves along the optical axis 2 in a direction away from the first lens group and closer to the imaging plane S15. When the optical camera lens switches from the second state to the first state, the second lens group moves along the optical axis 2 in a direction away from the imaging plane S15 and closer to the first lens group.

[0174] Table 14 shows the values ​​of parameters in the first and second states for the following parameters in Example 5: distance U between the subject and the optical camera lens, half of the maximum field of view (Semi-FOV) of the optical camera lens, aperture number Fno of the optical camera lens, total effective focal length f of the optical camera lens, spacing T1 between the fourth and fifth lenses on the second optical axis, and spacing T2 between the sixth lens and the filter element on the second optical axis.

[0175]

[0176]

[0177] Table 14

[0178] In this embodiment, the object-side surface and image-side surface of any one of the following lenses, E2 to E6, are aspherical, and the surface shape x of each aspherical lens can be calculated using, but is not limited to, the formula in Embodiment 1. Tables 15-1 and 15-2 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical surface S1-S12 in Embodiment 5.

[0179] Face number A4 A6 A8 A10 S1 6.1992E-02 1.7894E-03 1.2403E-04 1.1847E-05 S2 -5.9741E-02 2.2241E-02 -2.0203E-03 1.0658E-03 S3 -3.5737E-01 -1.4090E-02 -3.7268E-03 4.2173E-03 S4 6.5407E-01 -1.5747E-01 3.0548E-02 2.7789E-03 S5 8.8389E-01 -1.9370E-01 5.1031E-02 -8.6077E-03 S6 -6.3478E-01 4.0831E-02 -4.4710E-03 -4.3331E-04 S7 -1.2861E+00 1.8190E-02 -3.4477E-02 2.5347E-03 S8 1.1673E-01 2.8110E-03 6.0176E-04 2.5092E-05 S9 1.9268E+00 -9.2631E-02 4.9362E-02 -4.0800E-03 S10 1.7934E+00 -2.9351E-01 8.0553E-02 -2.8092E-02 S11 2.2884E-01 -1.9533E-01 6.2805E-02 -1.8685E-02 S12 -9.1049E-01 2.5804E-02 1.2121E-03 4.6261E-03

[0180] Table 15-1

[0181] Face number A12 A14 A16 A18 A20 S1 -8.8870E-06 3.0989E-06 -1.3827E-06 -3.1431E-07 -5.4968E-08 S2 -7.8212E-04 3.3217E-04 -1.4481E-04 1.9234E-05 3.9477E-06 S3 -1.9056E-03 4.8062E-04 -7.4399E-05 -4.2872E-05 8.8519E-06 S4 -3.1992E-03 1.2961E-03 -5.8307E-04 3.7416E-05 -3.3952E-06 S5 2.0335E-03 -4.6917E-04 -3.3908E-05 -2.7381E-05 -1.9612E-06 S6 1.1546E-03 -5.1182E-04 2.3451E-04 -5.6483E-05 3.4025E-06 S7 -2.0725E-03 1.9622E-04 -1.3816E-04 1.6506E-05 -2.8045E-05 S8 3.2430E-05 -8.7147E-06 1.7501E-05 -7.0869E-06 1.1368E-06 S9 3.4193E-03 -2.0020E-04 2.9426E-04 -6.2686E-06 7.5507E-06 S10 1.1848E-02 -3.2134E-03 2.2776E-03 -2.5907E-04 3.4505E-04 S11 1.6104E-02 2.9019E-05 4.2796E-03 4.4568E-04 6.7734E-04 S12 2.8451E-03 1.3203E-03 7.4037E-04 2.3144E-04 1.0098E-04

[0182] Table 15-2

[0183] Figures 15A to 15DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the first state of Embodiment 5 are shown respectively. Figures 16A to 16D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens in the second state of Embodiment 5 are shown respectively. According to... Figures 15A to 16D It can be seen that the optical camera lens of Embodiment 5 can have good imaging quality whether it is in the first state or the second state.

[0184] Table 16 shows the values ​​of the parameters in Examples 1-5. All parameters listed in Table 16 are in mm.

[0185]

[0186]

[0187] Table 16

[0188] Table 17 shows the values ​​of each conditional expression in Examples 1-5.

[0189] Example parameters 1 2 3 4 5 T2t / T1t 3.17 2.90 5.50 3.96 2.56 R5 / f3 2.29 2.42 2.86 2.53 2.62 f2 / R1 0.25 0.30 0.34 0.26 0.38 |f1 / (R1+R2)| 1.56 13.26 1.38 1.45 7.01 R1 / R2 0.63 1.23 0.59 0.61 1.02 f56 / T1w -4.27 -5.54 -4.96 -5.02 -5.30 ft / f56 -0.96 -0.84 -0.84 -0.96 -1.20 f2 / R3 1.05 1.12 1.59 1.16 1.20 R4*R3 / (ft*f2) -0.77 -0.93 3.48 -0.94 -1.07 R2 / R3 6.57 3.08 8.04 7.21 3.06 R6*N3 / (R7*N4) 0.93 0.91 0.98 0.90 0.90 R10 / R12*(V5 / V6) -2.71 -1.98 -3.13 -4.05 -1.05 R5 / f3 2.29 2.42 2.86 2.53 2.62 f3 / (R5+R6) 0.74 0.67 0.50 0.62 0.58 |f6 / (R11+R12)| 3.41 1.00 16.64 15.97 0.04 f4 / CT4*V4 58.53 58.16 63.54 64.55 60.51 |f2 / f3|*|f3 / f4| 1.21 1.26 1.52 1.28 1.37 |f56 / ft|+|f56 / fw| 2.34 2.65 2.67 2.34 1.90

[0190] Table 17

[0191] 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 characterized in that, From the object side to the image side in order comprises: a first lens with optical power, comprising an entrance surface, a reflection surface and an exit surface, the entrance surface is convex, the exit surface is concave; a second lens with positive optical power, the object side surface is convex; a third lens with negative optical power, the object side surface is concave, the image side surface is concave; a fourth lens with positive optical power, the object side surface is convex, the image side surface is convex; a fifth lens with optical power, the object side surface is concave, the image side surface is convex; and a sixth lens with negative optical power, the image side surface is concave; Wherein, the first lens is configured so that the light incident to the first lens along the direction of the first optical axis is reflected by the reflection surface and then exits to the second lens along the second optical axis, the second optical axis is perpendicular to the first optical axis; The second lens to the sixth lens is arranged in order along the second optical axis from the first lens to the image side; Wherein, the optical camera lens satisfies: 1.38≤|f1 / (R1+R2)|≤13.26; 0.59≤R1 / R2≤1.23, Wherein, f1 is the effective focal length of the first lens, R1 is the curvature radius of the entrance surface of the first lens, R2 is the curvature radius of the exit surface of the first lens; The first lens and the fifth lens have opposite positive and negative properties of optical power; The number of lenses with optical power in the optical camera lens is six.

2. The optical camera lens according to claim 1, characterized in that, The fifth lens and the sixth lens constitute a second lens group, which is movable relative to the imaging plane of the optical camera lens on the second optical axis to switch the optical camera lens between a first state and a second state.

3. The optical camera lens according to claim 2, characterized in that, The optical camera lens further comprises a filter element arranged on the image side of the sixth lens; and the optical camera lens satisfies: 2.56≤T2t / T1t≤5.50, Wherein, T2t is the interval distance of the sixth lens and the filter element on the second optical axis in the first state, and T1t is the interval distance of the fourth lens and the fifth lens on the second optical axis in the first state.

4. The optical camera lens according to claim 2, characterized in that, The optical camera lens satisfies: 1.90≤|f56 / ft|+|f56 / fw|≤2.67, Wherein, f56 is the combined focal length of the fifth lens and the sixth lens, ft is the total effective focal length of the optical camera lens in the first state, and fw is the total effective focal length of the optical camera lens in the second state.

5. The optical camera lens according to claim 2, characterized in that, The optical camera lens satisfies: -5.54≤f56 / T1w≤-4.27, Wherein, f56 is the combined focal length of the fifth lens and the sixth lens, and T1w is the interval distance of the fourth lens and the fifth lens on the second optical axis in the second state.

6. The optical camera lens according to claim 2, characterized in that, The optical camera lens satisfies: -1.20≤ft / f56≤-0.84, Wherein, f56 is the combined focal length of the fifth lens and the sixth lens, and ft is the total effective focal length of the optical camera lens in the first state.

7. The optical camera lens according to claim 2, characterized in that, The optical camera lens satisfies: -1.07 < R4 R3 / (ft f2) < 3.48, Wherein, R3 is the radius of curvature of the object side of the second lens, R4 is the radius of curvature of the image side of the second lens; ft is the total effective focal length of the optical camera lens in the first state; f2 is the effective focal length of the second lens.

8. The optical camera lens according to claim 2, characterized in that, The optical camera lens satisfies: -0.05 < ft / f1 < 0.2, Wherein, ft is the total effective focal length of the optical camera lens in the first state, f1 is the effective focal length of the first lens.

9. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 2.29 < R5 / f3 < 2.86, Wherein, f3 is the effective focal length of the third lens, R5 is the radius of curvature of the object side of the third lens.

10. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 0.25 < f2 / R1 < 0.38, Wherein, f2 is the effective focal length of the second lens, R1 is the radius of curvature of the entrance surface of the first lens.

11. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 1.05 < f2 / R3 < 1.59, Wherein, R3 is the radius of curvature of the object side of the second lens, f2 is the effective focal length of the second lens.

12. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 3.06 < R2 / R3 < 8.04, Wherein, R2 is the radius of curvature of the exit surface of the first lens, R3 is the radius of curvature of the object side of the second lens.

13. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 0.90 < R6 N3 / (R7 N4) < 0.98, Wherein, R6 is the radius of curvature of the image side of the third lens, R7 is the radius of curvature of the object side of the fourth lens, N3 is the refractive index of the third lens, N4 is the refractive index of the fourth lens.

14. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: -4.05 < R10 / R12 (V5 / V6) < -1.05, Wherein, V5 is the Abbe number of the fifth lens, V6 is the Abbe number of the sixth lens, R10 is the radius of curvature of the image side of the fifth lens, R12 is the radius of curvature of the image side of the sixth lens.

15. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 0.50 < f3 / (R5+R6) < 0.74, Wherein, R5 is the radius of curvature of the object side of the third lens, R6 is the radius of curvature of the image side of the third lens, f3 is the effective focal length of the third lens.

16. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 0.04 < |f6 / (R11+R12)| < 16.64, Wherein, f6 is the effective focal length of the sixth lens, R11 is the radius of curvature of the object side of the sixth lens, R12 is the radius of curvature of the image side of the sixth lens.

17. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 58.16 ≤ f4 / CT4 V4≤ 64.55, Wherein, f4 is the effective focal length of the fourth lens, CT4 is the center thickness of the fourth lens on the second optical axis, V4 is the Abbe number of the fourth lens.

18. The optical camera lens according to any one of claims 1 to 8, characterized in that, The optical camera lens satisfies: 1.21≤|f2 / f3| |f3 / f4|≤1.52, Wherein, f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens.

Images