Zoom optical system, lens module and electronic equipment

Abstract

The invention discloses a zoom optical system, a lens module and electronic equipment, and belongs to the technical field of electronic equipment. The zoom optical system comprises a reflection assembly, a zoom lens assembly and a focusing lens assembly, the reflection assembly, the zoom lens assembly and the focusing lens assembly are arranged at intervals in the first direction, and at least one of the reflection assembly, the zoom lens assembly and the focusing lens assembly can move in the first direction; wherein the focal power of the reflection assembly and the zoom lens assembly is a positive value, and the focal power of the focusing lens assembly is a negative value.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a zoom optical system, a lens module and an electronic equipment. Background Art

[0002] In the related art, in order to achieve more shooting effects, the camera device of the electronic device often needs to be equipped with multiple different optical systems. For example, in order to improve the photographic effects of different focal lengths in the telephoto shooting mode, such as the 3x shooting mode and the 5x shooting mode, the camera device usually adopts two optical systems to achieve the 3x shooting mode and the 5x shooting mode respectively. This increases the volume and weight of the camera device, which is not conducive to the miniaturization design of the electronic device. In addition, the camera device adopts digital zoom, and different optical systems bear the photography requirements of different focal lengths, resulting in loss of image quality. Summary of the invention

[0003] The present application aims to provide a zoom optical system, a lens module and an electronic device, which can solve the technical problems in the related art that the use of multiple optical systems leads to increased size and weight of the camera device and poor imaging quality.

[0004] In a first aspect, an embodiment of the present application provides a zoom optical system, comprising:

[0005] A reflection assembly, a zoom lens assembly and a focus lens assembly, wherein the reflection assembly, the zoom lens assembly and the focus lens assembly are arranged at intervals along a first direction, and at least one of the reflection assembly, the zoom lens assembly and the focus lens assembly can move along the first direction;

[0006] The optical focal lengths of the reflection component and the zoom lens component are positive values, and the optical focal length of the focus lens component is negative value.

[0007] In a second aspect, an embodiment of the present application provides a lens module, comprising: a zoom optical system as in the first aspect; a filter, wherein a light incident surface of the filter is opposite to a light exit surface of the zoom optical system; and a photosensitive chip, wherein the photosensitive chip is opposite to a light exit surface of the filter.

[0008] In a third aspect, an embodiment of the present application provides an electronic device, including: a lens module as in the second aspect.

[0009] The zoom optical system of the embodiment of the present application, by setting a reflection component, a zoom lens component and a focus lens component, further by adjusting the relative positions between the reflection component, the zoom lens component and the focus lens component, on the one hand, can achieve zooming and focusing, can achieve physical optical zoom, so that the quality of imaging during shooting can be guaranteed. On the other hand, shooting modes of different focal lengths can be achieved through a zoom optical system. Therefore, the electronic device using the zoom optical system of the embodiment of the present application does not need to set up multiple optical systems to achieve shooting modes of different focal lengths, which can effectively reduce the volume and weight of the electronic device. In addition, the reflection component also has optical focal length. During the shooting process, the reflection component can cooperate with the zoom lens component and the focus lens component to zoom and focus the light, so that the length of the zoom lens component and the focus lens component can be saved, thereby reducing the total length of the zoom optical system, and further reducing the volume and weight of the zoom optical system.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 One of the structural schematic diagrams of the zoom optical system according to an embodiment of the present application is shown;

[0013] Figure 2 A second structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown;

[0014] Figure 3 The third structural schematic diagram of the zoom optical system according to the embodiment of the present application is shown;

[0015] Figure 4 Shows Figure 2 Vertical axis chromatic aberration curve of zoom optical system;

[0016] Figure 5 Shows Figure 3 Vertical axis chromatic aberration curve of zoom optical system;

[0017] Figure 6 Shows Figure 2 Modulation transfer function curve diagram of zoom optical system;

[0018] Figure 7 Shows Figure 3 Modulation transfer function curve diagram of zoom optical system;

[0019] Figure 8 A fourth structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown;

[0020] Fig. 9 A fifth structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown;

[0021] Fig.10 Shows Figure 8 Vertical axis chromatic aberration curve of zoom optical system;

[0022] Fig.11 Shows Fig. 9 Vertical axis chromatic aberration curve of zoom optical system;

[0023] Fig.12 Shows Figure 8 Modulation transfer function curve diagram of zoom optical system;

[0024] Fig.13 Shows Fig. 9 Modulation transfer function curve diagram of zoom optical system;

[0025] Fig.14 A sixth structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown;

[0026] Fig.15 FIG7 shows a seventh structural schematic diagram of a zoom optical system according to an embodiment of the present application;

[0027] Fig.16 Shows Fig.14 Vertical axis chromatic aberration curve of zoom optical system;

[0028] Fig.17 Shows Fig.15 Vertical axis chromatic aberration curve of zoom optical system;

[0029] Fig.18 Shows Fig.14 Modulation transfer function curve diagram of zoom optical system;

[0030] Fig.19 Shows Fig.15 Modulation transfer function curve diagram of zoom optical system;

[0031] Fig. 20 An eighth structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown;

[0032] Fig.21 A ninth structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown;

[0033] Fig. 22 Shows Fig. 20Vertical axis chromatic aberration curve of zoom optical system;

[0034] Fig.23 Shows Fig.21 Vertical axis chromatic aberration curve of zoom optical system;

[0035] Fig.24 Shows Fig. 20 Modulation transfer function curve diagram of zoom optical system;

[0036] Fig.25 Shows Fig.21 Modulation transfer function curve diagram of zoom optical system;

[0037] Fig.26 A schematic structural diagram of a lens module according to an embodiment of the present application is shown;

[0038] Fig. 27 A structural block diagram of an electronic device according to an embodiment of the present application is shown.

[0039] Reference numerals:

[0040] 100 zoom optical system, 102 reflection component, 104 zoom lens component, 106 focus lens component, 108 first prism, 110 first incident surface, 112 first reflection surface, 114 first exit surface, 116 second prism, 118 second incident surface, 120 second reflection surface, 122 second exit surface, 124 first lens, 126 second lens, 128 third lens, 200 lens module, 202 filter, 204 photosensitive chip, 300 electronic device. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0042] The features of the terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, and internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Combine the following Figures 1 to 27 A zoom optical system, a lens module, and an electronic device according to embodiments of the present application are described.

[0045] In some embodiments of the present application, a zoom optical system is provided. Figure 1 FIG. 1 shows one of the structural schematic diagrams of the zoom optical system according to an embodiment of the present application; Figure 1 As shown, the zoom optical system 100 includes: a reflection component 102, a zoom lens component 104 and a focus lens component 106, the reflection component 102, the zoom lens component 104 and the focus lens component 106 are arranged at intervals along a first direction, and at least one of the reflection component 102, the zoom lens component 104 and the focus lens component 106 can move along the first direction; wherein the optical focal lengths of the reflection component 102 and the zoom lens component 104 are positive values, and the optical focal length of the focus lens component 106 is negative value.

[0046] In the embodiment of the present application, the zoom optical system 100 includes a reflection component 102, a zoom lens component 104, and a focus lens component 106, and the reflection component 102, the zoom lens component 104, and the focus lens component 106 are arranged at intervals along a first direction. Among them, the reflection component 102 can be used to reflect light during the shooting process, so that the light can pass through the zoom lens component 104 and the focus lens component 106 along the first direction, so as to achieve zooming and focusing of the light, thereby realizing the shooting process of the zoom optical system 100.

[0047] Furthermore, at least one of the reflective assembly 102, the zoom lens assembly 104, and the focus lens assembly 106 can move along the first direction, so as to adjust the relative positions of the reflective assembly 102, the zoom lens assembly 104, and the focus lens assembly 106, thereby achieving zooming and focusing. That is, the zoom optical system 100 of the present application performs zooming and focusing by adjusting the relative positions of the reflective assembly 102, the zoom lens assembly 104, and the focus lens assembly 106, that is, it can achieve physical optical zoom, thereby ensuring the quality of imaging during shooting.

[0048] Furthermore, by adjusting the relative positions of the reflection component 102, the zoom lens component 104 and the focus lens component 106, switching between different focal length segments can be achieved, that is, shooting modes of different focal length segments can be achieved through one zoom optical system 100. Therefore, the electronic device using the zoom optical system 100 of the embodiment of the present application does not need to set up multiple optical systems to achieve shooting modes of different focal length segments, which can effectively reduce the size and weight of the electronic device.

[0049] Furthermore, the optical power of the reflective component 102 and the zoom lens component 104 is a positive value, and the optical power of the focus lens component 106 is a negative value, that is, in the zoom optical system 100 of the embodiment of the present application, not only the zoom lens component 104 and the focus lens component 106 have optical power to achieve zooming and focusing during the shooting process, but the reflective component 102 also has optical power, and the optical power of the reflective component 102, the zoom lens component 104 and the focus lens component 106 are set to ensure that the zoom optical system 100 can shoot normally. Therefore, during the shooting process, the reflective component 102 can cooperate with the zoom lens component 104 and the focus lens component 106 to zoom and focus the light, so that the length of the zoom lens component 104 and the focus lens component 106 can be saved, thereby reducing the total length of the zoom optical system 100, and further reducing the volume and weight of the zoom optical system.

[0050] The zoom optical system 100 of the embodiment of the present application, by setting the reflection component 102, the zoom lens component 104 and the focus lens component 106, further by adjusting the relative positions between the reflection component 102, the zoom lens component 104 and the focus lens component 106, on the one hand, can achieve zooming and focusing, can achieve physical optical zoom, so that the quality of imaging during shooting can be guaranteed. On the other hand, shooting modes of different focal lengths can be achieved through a zoom optical system 100. Therefore, the electronic device using the zoom optical system 100 of the embodiment of the present application does not need to set up multiple optical systems to achieve shooting modes of different focal lengths, which can effectively reduce the volume and weight of the electronic device. In addition, the reflection component 102 also has optical focal length. During the shooting process, the reflection component 102 can cooperate with the zoom lens component 104 and the focus lens component 106 to zoom and focus the light, so that the length of the zoom lens component 104 and the focus lens component 106 can be saved, thereby reducing the total length of the zoom optical system 100, and further reducing the volume and weight of the zoom optical system.

[0051] In some embodiments of the present application, there is a first position and a second position between the reflection component 102, the zoom lens component 104 and the focus lens component 106, wherein the zoom optical system 100 operates at the first position, the second position and any position between the first position and the second position, and at the first position, the focal length of the zoom optical system 100 is the first focal length, and at the second position, the focal length of the zoom optical system 100 is the second focal length, and the first focal length and the second focal length satisfy: a≤ft÷fw≤b;

[0052] Wherein, ft is the first focal length, fw is the second focal length, a is the first threshold, and b is the second threshold.

[0053] In the embodiment of the present application, the switching between different focal length segments can be achieved by adjusting the relative positions between the reflective assembly 102, the zoom lens assembly 104 and the focus lens assembly 106. Specifically, there is a first position and a second position between the reflective assembly 102, the zoom lens assembly 104 and the focus lens assembly 106, and the zoom optical system 100 can operate at the first position, the second position and any position between the first position and the second position. In the first position, the zoom optical system is in the first shooting mode, for example, the first shooting mode can be a telephoto mode. In the second position, the zoom optical system is in the second shooting mode, for example, the second shooting mode can be a wide-angle mode.

[0054] Further, in the first shooting mode, the focal length of the zoom optical system 100 is the first focal length, and in the second shooting mode, the focal length of the zoom optical system 100 is the second focal length, and at the same time, the first focal length and the second focal length satisfy a≤ft÷fw≤b; wherein ft is the first focal length, fw is the second focal length, a is the first threshold, and b is the second threshold. That is, the ratio between the first focal length and the second focal length is greater than or equal to a and less than or equal to b. Specifically, a and b can be set according to the actual operation requirements of the zoom optical system 100, for example, a can be 1.3, and b can be 2.5. That is, the first focal length and the second focal length satisfy: 1.3≤ft÷fw≤2.5, wherein ft is the first focal length, and fw is the second focal length.

[0055] By setting the relationship between the first focal length and the second focal length, it can be ensured that the zoom optical system 100 has a suitable zoom ratio, thereby enabling the zoom optical system 100 to have better shooting effects in different shooting environments.

[0056] For example, Figure 2 , Figure 8 , Fig.14 and Fig. 20As shown, at this time, the reflection component 102, the zoom lens component 104, and the focusing lens component 106 are in the first position. That is, the shooting mode of the zoom optical system 100 is the first shooting mode at this time. As Figure 3 , Fig. 9 , Fig.15 and Fig.21 As shown, at this time, the reflection component 102, the zoom lens component 104, and the focusing lens component 106 are in the second position. That is, the shooting mode of the zoom optical system 100 is the second shooting mode at this time.

[0057] In some embodiments of the present application, the focal length of the reflection component 102 is the third focal length, and the first focal length and the third focal length satisfy: f1>2×ft; where ft is the first focal length and f1 is the third focal length. The third focal length is greater than twice the first focal length.

[0058] In the embodiments of the present application, the focal length of the reflection component 102 is the third focal length, and moreover, the third focal length satisfies: f1>2×ft, where f1 is the third focal length and ft is the first focal length. That is to say, the third focal length is greater than twice the first focal length, that is, the third focal length of the reflection component 102 is greater than the first focal length of the zoom optical system 100 in the first shooting mode.

[0059] Through the setting of the third focal length of the reflection component 102, the reflection component 102 can not only achieve the effect of light convergence, but also make the optical power of the reflection component 102 as small as possible, thereby reducing the anti-shake sensitivity of the zoom optical system 100 to improve the anti-shake effect of the zoom optical system.

[0060] In some embodiments of the present application, the focal length of the zoom lens component 104 is the fourth focal length, and the focal length of the focusing lens component 106 is the fifth focal length; where the fifth focal length and the fourth focal length satisfy: c<|f3÷f2|<d; where f2 is the fourth focal length, f3 is the fifth focal length, c is the third threshold, and d is the fourth threshold.

[0061] In the embodiments of the present application, the focal lengths of the zoom lens component 104 and the focusing lens component 106 are the fourth focal length and the fifth focal length respectively, and moreover, the fourth focal length and the fifth focal length satisfy: c<|f3÷f2|<d; where f2 is the fourth focal length, f3 is the fifth focal length, c is the third threshold, and d is the fourth threshold. Specifically, c and d can be set according to the actual operation requirements of the zoom optical system 100. For example, c can be set to 0.8 and d can be set to 1.5. That is to say, the fourth focal length and the fifth focal length satisfy: 0.8<|f3÷f2|<1.5.

[0062] By setting the relationship between the fourth focal length and the fifth focal length, that is, setting the relationship between the focal lengths of the zoom lens assembly 104 and the focusing lens assembly 106, during the shooting process, the aberration of the zoom optical system 100 can be greatly converged, thereby effectively improving the imaging quality during shooting.

[0063] In some embodiments of the present application, between the first position and the second position, the maximum movement stroke of the zoom lens assembly 104 satisfies: e×(ft-fw)<D1<j×(ft-fw); where D1 is the movement stroke of the zoom lens assembly 104, ft is the first focal length, fw is the second focal length, e is the first preset value, and j is the second preset value.

[0064] In the embodiments of the present application, during the movement of the reflection assembly 102, the zoom lens assembly 104, and the focusing lens assembly 106 between the first position and the second position, the maximum movement stroke D1 of the zoom lens assembly 104 satisfies: e×(ft-fw)<D1<j×(ft-fw), where ft is the first focal length, that is, the focal length of the zoom optical system 100 in the first shooting mode is the first focal length, fw is the second focal length, that is, the focal length of the zoom optical system 100 in the second shooting mode is the second focal length, e is the first preset value, and j is the second preset value. Specifically, e and j can be set according to the actual operation requirements of the zoom optical system 100. For example, e can be set to 0.3 and j can be set to 0.7. That is, D1 satisfies: 0.3×(ft-fw)<D1<0.7×(ft-fw).

[0065] By setting the maximum movement stroke of the zoom lens assembly 104, it can cooperate with the zoom range of the zoom optical system between the first shooting mode and the second shooting mode. On the one hand, the maximum stroke of the zoom lens assembly 104 can be reduced, and the requirement for the drive motor of the zoom lens assembly 104 can be lowered. On the other hand, it can also ensure that the zoom lens assembly 104 has appropriate sensitivity, ensuring that the zoom optical system 100 can achieve a fast and accurate zoom process.

[0066] In some embodiments of the present application, between the first position and the second position, the maximum movement stroke of the focusing lens assembly 106 satisfies: g×(ft-fw)<D2<h×(ft-fw); where D2 is the movement stroke of the focusing lens assembly 106, ft is the first focal length, fw is the second focal length, g is the third preset value, and h is the fourth preset value.

[0067] In the embodiment of the present application, during the movement of the reflection component 102, the zoom lens component 104, and the focusing lens component 106 between the first position and the second position, the maximum movement stroke D2 of the focusing lens component 106 satisfies: g×(ft-fw)<D2<h×(ft-fw), where ft is the first focal length, that is, the focal length of the zoom optical system 100 in the first shooting mode is the first focal length, fw is the second focal length, that is, the focal length of the zoom optical system 100 in the second shooting mode is the second focal length, g is the third preset value, and h is the fourth preset value. Specifically, g and h can be set according to the actual operation requirements of the zoom optical system 100. For example, g can be set to 0.7 and h can be set to 1.3. That is, D2 satisfies: 0.7×(ft-fw)<D2<1.3×(ft-fw).

[0068] By setting the maximum movement stroke of the focusing lens component 106, it can cooperate with the zoom range of the zoom optical system 100 between the first shooting mode and the second shooting mode. On the one hand, it can reduce the maximum stroke of the focusing lens component 106 and reduce the requirement for the driving motor of the focusing lens component 106. On the other hand, it can also ensure that the focusing lens component 106 has appropriate sensitivity and ensure that the zoom optical system 100 can achieve a fast and accurate zoom process.

[0069] In some embodiments of the present application, the reflection component 102 includes: a first prism 108, and the first prism 108 includes a first incident surface 110, a first reflection surface 112, and a first exit surface 114; wherein, the optical power of the first prism 108 is positive, and the first exit surface 114 faces the zoom lens component 104.

[0070] In the embodiment of the present application, as Figure 1 shown, the reflection component 102 may include a first prism 108. Among them, the first prism 108 includes a first incident surface 110. It can be understood that during the shooting process, light can enter the prism through the first incident surface 110 of the first prism 108. Further, the first prism 108 further includes a first reflection surface 112 and a first exit surface 114, and the first exit surface 114 faces the zoom lens component 104. During the shooting process, after the light enters the first prism 108 through the first incident surface 110 and is reflected by the first reflection surface 112, the light can propagate in the first direction, and after passing through the first exit surface 114 of the first prism 108, it enters the zoom lens component 104 and the focusing lens component 106 in sequence.

[0071] Furthermore, the optical focal length of the first prism 108 is a positive value, that is, the first prism 108 has an optical focal length while changing the light propagation path, so that it can cooperate with the zoom lens assembly 104 and the focus lens assembly 106 to zoom and focus the light, so as to save the length of the zoom lens assembly 104 and the focus lens assembly 106, thereby reducing the overall length of the zoom optical system 100, and further reducing the volume and weight of the zoom optical system.

[0072] In some embodiments of the present application, the first incident surface 110 is a convex surface, the first incident surface 110 is an aspherical surface, and the first exit surface 114 is a plane or a concave surface.

[0073] In the embodiment of the present application, the first incident surface 110 of the first prism 108 can be set as a convex surface, so as to achieve convergence of light, so as to further increase the amount of light entering during the shooting process and improve the shooting quality. Furthermore, the first incident surface 110 can also be set as an aspherical surface, so as to further improve the processing effect of the first prism 108 on light, so as to further improve the shooting effect of the zoom optical system 100.

[0074] Furthermore, the first exit surface 114 of the first prism 108 may be configured as a flat surface or a concave surface, so as to ensure that the light can propagate along the first direction to the zoom lens assembly 104 and the focus lens assembly 106 after passing through the first exit surface 114 .

[0075] In some embodiments of the present application, the reflective assembly 102 includes: a second prism 116, the second prism 116 includes a second incident surface 118, a second reflective surface 120 and a second exit surface 122; a first lens 124, the first lens 124 is opposite to the second incident surface 118; wherein the optical focal length of the first lens 124 is positive, and the second exit surface 122 is opposite to the zoom lens assembly 104.

[0076] In the embodiments of the present application, Fig. 20 An eighth structural schematic diagram of the zoom optical system according to an embodiment of the present application is shown; Fig.21 FIG. 9 shows a ninth structural diagram of a zoom optical system according to an embodiment of the present application; Fig. 20 and Fig.21As shown, the reflection assembly 102 may include a second prism 116 and a first lens 124, wherein the second prism 116 includes a second incident surface 118, and the first lens 124 is opposite to the second incident surface 118 of the second prism 116. That is, during the shooting process, the light first passes through the first lens 124, and then enters the second prism 116 through the second incident surface 118 of the second prism 116. Further, the second prism 116 also includes a second reflection surface 120 and a second exit surface 122, and the second exit surface 122 is opposite to the zoom lens assembly 104. During the shooting process, after the light enters the second prism 116 through the second incident surface 118, after being reflected by the second reflection surface 120, the light can propagate along the first direction, and after passing through the second exit surface 122 of the second prism 116, it enters the zoom lens assembly 104 and the focus lens assembly 106 in sequence.

[0077] Furthermore, the optical focal length of the first lens 124 is positive, so that the reflective component 102 has an optical focal length, and then the reflective component 102 can cooperate with the zoom lens component 104 and the focus lens component 106 to zoom and focus the light, so as to save the length of the zoom lens component 104 and the focus lens component 106, reduce the overall length of the zoom optical system 100, and further reduce the volume and weight of the zoom optical system.

[0078] In some embodiments of the present application, both side surfaces of the first lens 124 are aspherical surfaces.

[0079] In the embodiment of the present application, by setting both side surfaces of the first lens 124 as aspherical surfaces, the imaging effect of the zoom optical system 100 can be effectively improved. It can be understood that the aspherical lens has a higher optical performance and can effectively reduce aberrations, thereby improving the clarity and quality of imaging. In addition, especially compared with the aberrations generated by spherical lenses, the aspherical shape can better meet the requirements of the zoom optical system 100, can reduce or eliminate the aberrations inherent in spherical lenses, and improve the imaging quality of the zoom optical system 100.

[0080] Specifically, in the plane rectangular coordinate system, the expression of the aspheric surface is:

[0081]

[0082] Among them, the horizontal axis of the plane rectangular coordinate system is the x-axis, the vertical axis is the z-axis, c is the surface curvature of the aspherical surface at different positions, K is the cone constant, and A, B, C, D, E, F, and G are aspherical coefficients respectively.

[0083] In some embodiments of the present application, the zoom lens assembly 104 includes: at least three second lenses 126 , and the at least three second lenses 126 are arranged at intervals along the first direction.

[0084] In the embodiments of the present application, Figure 1 As shown, the zoom lens assembly 104 may include at least three second lenses 126. During the shooting process, after the light is reflected by the reflection assembly 102, it propagates along the first direction to the zoom lens assembly 104, and then passes through the at least three second lenses 126 of the zoom lens assembly 104 in sequence. Combined with the movement of the zoom lens assembly 104 along the first direction, the light is zoomed to achieve the shooting requirements of different focal lengths of the zoom optical system 100.

[0085] Furthermore, at least three second lenses 126 of the zoom lens assembly 104 may all be aspherical lenses, thereby improving the optical performance of the zoom lens assembly 104 , effectively reducing aberrations, and further improving the clarity and quality of imaging of the zoom optical system 100 .

[0086] In some embodiments of the present application, the focusing lens assembly 106 includes: at least two third lenses 128, and the at least two third lenses 128 are arranged at intervals along the first direction.

[0087] In the embodiments of the present application, Figure 1 As shown, the focusing lens assembly 106 may include at least two third lenses 128. During the shooting process, after the light is reflected by the reflection assembly 102, it propagates along the first direction to the zoom lens assembly 104, and then passes through at least three second lenses 126 of the zoom lens assembly 104 in sequence, combined with the movement of the zoom lens assembly 104 along the first direction to zoom the light. Further, the light propagates along the first direction to the focusing lens assembly 106, and passes through at least two third lenses 128 of the focusing lens assembly 106 in sequence, combined with the movement of the focusing lens assembly 106 along the first direction to focus the light, so as to achieve the shooting requirements of different focal lengths of the zoom optical system 100.

[0088] In some embodiments of the present application, the third lens 128 is an aspherical lens.

[0089] In the embodiment of the present application, at least two third lenses 128 of the focusing lens assembly 106 can be aspherical lenses, thereby improving the optical performance of the focusing lens assembly 106, effectively reducing aberrations, and further improving the clarity and quality of imaging of the zoom optical system 100.

[0090] The embodiment of the present application also provides a lens module, Fig.26 The structure diagram of the lens module of the embodiment of the present application is shown; Fig.26As shown, the lens module 200 includes a zoom optical system 100 as any one of the above embodiments; a filter 202, wherein the light incident surface of the filter 202 is opposite to the light exit surface of the zoom optical system 100; and a photosensitive chip 204, wherein the photosensitive chip 204 is opposite to the light exit surface of the filter 202.

[0091] In the embodiment of the present application, the lens module 200 includes the zoom optical system 100 of any one of the above embodiments, as well as the filter 202 and the photosensitive chip 204, wherein the light incident surface of the filter 202 is opposite to the light exit surface of the zoom optical system 100, that is, after the light passes through the zoom optical system 100 for zooming and focusing, it enters the filter 202 for filtering, and filters out infrared light and other light in the light to ensure the imaging effect. Further, the photosensitive chip 204 is opposite to the light exit surface of the filter 202, and after the light is filtered, it is processed by the photosensitive chip 204 to achieve imaging.

[0092] Furthermore, the lens module 200 provided in the embodiment of the present application has the zoom optical system 100 as in any of the above embodiments, and thus has the beneficial effects of any of the above embodiments, which are not described in detail here.

[0093] In some embodiments of the present application, the lens module 200 also includes: a driving member (not shown in the figure), which is connected to the reflection assembly 102, the zoom lens assembly 104 and the focus lens assembly 106, and is used to drive at least one of the reflection assembly 102, the zoom lens assembly 104 and the focus lens assembly 106 to move along the first direction.

[0094] In an embodiment of the present application, by setting a driving member, at least one of the reflection component 102, the zoom lens component 104 and the focus lens component 106 can be driven so that at least one of the reflection component 102, the zoom lens component 104 and the focus lens component 106 moves along a first direction, thereby realizing the zooming and focusing process.

[0095] Furthermore, the driving component can also drive the reflection component 102 to cooperate with the transmitting component to form an anti-shake component. That is, during the shooting process, the driving component can drive the reflection component 102 to move accordingly according to the shaking process of the lens module 200 to achieve anti-shake shooting.

[0096] For example, Figure 2 and Figure 3 As shown, Figure 2 indicates that the zoom optical system 100 is in the first shooting mode, Figure 3Indicates that the zoom optical system 100 is in the second shooting mode. The zoom optical system 100 includes a reflection component 102, a zoom lens component 104 and a focus lens component 106, wherein the reflection component 102 includes a first prism 108, the incident surface of the first prism 108 is an aspherical surface, the reflection surface is a plane, and the exit surface is a plane. During the zooming process of the zoom optical system 100, the first prism 108 can move along the first direction.

[0097] Further, the zoom lens assembly 104 includes four second lenses 126. Along the first direction, the four second lenses 126 are lens L1, lens L2, lens L3 and lens L4, wherein the focal length of lens L1 is negative, the focal length of lens L2 is positive, the focal length of lens L3 is negative, and the focal length of lens L4 is positive. The four second lenses 126 are all aspherical lenses. During the zooming process of the zoom optical system 100, the zoom lens assembly 104 can move along the first direction.

[0098] Further, the focus lens assembly 106 includes three third lenses 128. Along the first direction, the three third lenses 128 are lens L5, lens L6 and lens L7, wherein the focal length of lens L5 is negative, the focal length of lens L6 is positive, and the focal length of lens L7 is negative. The three third lenses 128 are all aspherical lenses. During the zooming process of the zoom optical system 100, the focus lens assembly 106 can move along the first direction.

[0099] Specifically, the parameters of the zoom optical system 100 during the shooting process are shown in Table 1:

[0100] Table 1

[0101]

[0102] Wherein, f1 is the focal length of the reflection component 102 , f2 is the focal length of the zoom lens component 104 , and f3 is the focal length of the focus lens component 106 .

[0103] Furthermore, the parameters of each lens in the reflection assembly 102, the zoom lens assembly 104 and the focus lens assembly 106 are shown in Table 2:

[0104] Table 2

[0105]

[0106]

[0107] Among them, S1 to S20 are the serial numbers of the surfaces that the light passes through. Furthermore, the aspheric high-order coefficients of S1 to S17 are shown in Table 3:

[0108] Table 3

[0109]

[0110]

[0111] Here, S4 (stop) indicates that an aperture is provided on the S4 surface.

[0112] Further, in the first shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Figure 4 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Figure 6 In the second shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Figure 5 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Figure 7 As shown. It can be seen that the vertical axis chromatic aberration of the zoom optical system 100 in the first shooting mode and the second shooting mode is controlled within a very small range, and the chromatic aberration converges well. Moreover, at a spatial frequency of 100lp / mm, the modulation transfer function of the full field of view is greater than 0.5, and has extremely high resolution.

[0113] For example, Figure 8 and Fig. 9 As shown, Figure 8 indicates that the zoom optical system 100 is in the first shooting mode, Fig. 9 The zoom optical system 100 is in the second shooting mode. The zoom optical system 100 comprises a reflection component 102, a zoom lens component 104 and a focus lens component 106, wherein the reflection component 102 comprises a first prism 108, the incident surface of the first prism 108 is an aspherical surface, the reflection surface is a plane, and the exit surface is a plane.

[0114] Further, the zoom lens assembly 104 includes four second lenses 126. Along the first direction, the four second lenses 126 are lens L1, lens L2, lens L3 and lens L4, wherein the focal length of lens L1 is negative, the focal length of lens L2 is positive, the focal length of lens L3 is negative, and the focal length of lens L4 is positive. All of the four second lenses 126 are aspherical lenses.

[0115] Furthermore, the focusing lens assembly 106 includes three third lenses 128. Along the first direction, the three third lenses 128 are lens L5, lens L6 and lens L7, respectively, wherein the optical focal length of lens L5 is negative, the optical focal length of lens L6 is positive, and the optical focal length of lens L7 is negative.

[0116] In this embodiment, during the zooming process of the zoom optical system 100, the position of the reflection component 102 remains unchanged, and the zoom lens component 104 and the focus lens component 106 move along a first direction.

[0117] Specifically, the parameters of the zoom optical system 100 during shooting are shown in Table 4:

[0118] Table 4

[0119]

[0120]

[0121] Wherein, f1 is the focal length of the reflection component 102 , f2 is the focal length of the zoom lens component 104 , and f3 is the focal length of the focus lens component 106 .

[0122] Furthermore, the parameters of each lens in the reflection assembly 102, the zoom lens assembly 104 and the focus lens assembly 106 are shown in Table 5:

[0123] Table 5

[0124]

[0125] Among them, S1 to S20 are the serial numbers of the surfaces that the light passes through.

[0126] Furthermore, the aspheric high-order coefficients of S1 to S19 are shown in Table 6:

[0127] Table 6

[0128]

[0129]

[0130] Here, S4 (stop) indicates that an aperture is provided on the S4 surface.

[0131] Further, in the first shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Fig.10 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Fig.12 In the second shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Fig.11 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Fig.13 As shown. It can be seen that the vertical axis chromatic aberration of the zoom optical system 100 in the first shooting mode and the second shooting mode is controlled within a very small range, and the chromatic aberration converges well. Moreover, at a spatial frequency of 100lp / mm, the modulation transfer function of the full field of view is greater than 0.5, and has extremely high resolution.

[0132] For example, Fig.14 and Fig.15 As shown, Fig.14indicates that the zoom optical system 100 is in the first shooting mode, Fig.15 It indicates that the zoom optical system 100 is in the second shooting mode. The zoom optical system 100 comprises a reflection component 102 , a zoom lens component 104 and a focus lens component 106 , wherein the reflection component 102 comprises a first prism 108 .

[0133] Furthermore, the zoom lens assembly 104 includes four second lenses 126 . Along the first direction, the four second lenses 126 are lens L1 , lens L2 , lens L3 , lens L4 , and lens L5 . All of the five second lenses 126 are aspherical lenses.

[0134] Furthermore, the focusing lens assembly 106 includes three third lenses 128 . Along the first direction, the three third lenses 128 are lens L6 , lens L7 , and lens L8 .

[0135] In this embodiment, during the zooming process of the zoom optical system 100, the position of the reflection component 102 remains unchanged, and the zoom lens component 104 and the focus lens component 106 move along the first direction.

[0136] Specifically, the parameters of the zoom optical system 100 during the shooting process are shown in Table 7:

[0137] Table 7

[0138]

[0139] Wherein, f1 is the focal length of the reflection component 102 , f2 is the focal length of the zoom lens component 104 , and f3 is the focal length of the focus lens component 106 .

[0140] Furthermore, the parameters of each lens in the reflection assembly 102, the zoom lens assembly 104 and the focus lens assembly 106 are shown in Table 8:

[0141] Table 8

[0142]

[0143] Among them, S1 to S22 are the serial numbers of the surfaces that the light passes through.

[0144] Furthermore, the aspheric high-order coefficients of S1 to S19 are shown in Table 9:

[0145] Table 9

[0146]

[0147]

[0148] Here, S4 (stop) indicates that an aperture is provided on the S4 surface.

[0149] Further, in the first shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Fig.16 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Fig.18 In the second shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Fig.17 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Fig.19 As shown. It can be seen that the vertical axis chromatic aberration of the zoom optical system 100 in the first shooting mode and the second shooting mode is controlled within a very small range, and the chromatic aberration converges well. Moreover, at a spatial frequency of 100lp / mm, the modulation transfer function of the full field of view is greater than 0.5, and has extremely high resolution.

[0150] For example, Fig. 20 and Fig.21 As shown, Fig. 20 indicates that the zoom optical system 100 is in the first shooting mode, Fig.21 Indicates that the zoom optical system 100 is in the second shooting mode. The zoom optical system 100 includes a reflection component 102, a zoom lens component 104 and a focus lens component 106, wherein the reflection component 102 includes a first lens 124 and a second prism 116, and the incident surface of the second prism 116 is an aspherical surface, the reflection surface is a plane, and the exit surface is a plane.

[0151] Further, the zoom lens assembly 104 includes four second lenses 126. Along the first direction, the four second lenses 126 are lens L1, lens L2, lens L3 and lens L4, wherein the focal length of lens L1 is negative, the focal length of lens L2 is positive, the focal length of lens L3 is negative, and the focal length of lens L4 is positive. All of the four second lenses 126 are aspherical lenses.

[0152] Furthermore, the focusing lens assembly 106 includes three third lenses 128. Along the first direction, the three third lenses 128 are lens L5, lens L6 and lens L7, respectively, wherein the optical focal length of lens L5 is negative, the optical focal length of lens L6 is positive, and the optical focal length of lens L7 is negative.

[0153] Specifically, the parameters of the zoom optical system 100 during the shooting process are shown in Table 10:

[0154] Table 10

[0155]

[0156] Wherein, f1 is the focal length of the reflection component 102 , f2 is the focal length of the zoom lens component 104 , and f3 is the focal length of the focus lens component 106 .

[0157] Furthermore, the parameters of each lens in the reflection assembly 102, the zoom lens assembly 104 and the focus lens assembly 106 are shown in Table 11:

[0158] Table 11

[0159]

[0160] Among them, S1 to S22 are the serial numbers of the surfaces that the light passes through.

[0161] Furthermore, the aspheric high-order coefficients of S1 to S19 are shown in Table 12:

[0162] Table 12

[0163]

[0164]

[0165] Here, S6 (stop) indicates that an aperture is provided on the S6 surface.

[0166] Further, in the first shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Fig. 22 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Fig.24 In the second shooting mode, the vertical axis chromatic aberration of the zoom optical system 100 is as follows: Fig.23 As shown, the modulation transfer function of the zoom optical system 100 is as follows: Fig.25 As shown. It can be seen that the vertical axis chromatic aberration of the zoom optical system 100 in the first shooting mode and the second shooting mode is controlled within a very small range, and the chromatic aberration converges well. Moreover, at a spatial frequency of 100lp / mm, the modulation transfer function of the full field of view is greater than 0.5, and has extremely high resolution.

[0167] The embodiment of the present application further provides an electronic device 300, Fig. 27 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown. Fig. 27 As shown, the electronic device 300 includes a main board and a lens module 200 as in any one of the above embodiments, and the lens module 200 is electrically connected to the main board.

[0168] The electronic device 300 provided in the embodiment of the present application includes a mainboard and a lens module 200 as in any one of the above embodiments, wherein the lens module 200 is electrically connected to the mainboard, so that the operation of the lens module 200 can be controlled by a control chip on the mainboard. In addition, the electronic device 300 in the embodiment of the present application has the beneficial effects of any of the above embodiments because it has the lens module 200 as in any of the above embodiments, which will not be described one by one here.

[0169] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0170] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A zoom optical system, characterized in that: include: A reflection assembly, a zoom lens assembly and a focus lens assembly, wherein the reflection assembly, the zoom lens assembly and the focus lens assembly are arranged at intervals along a first direction, and at least one of the reflection assembly, the zoom lens assembly and the focus lens assembly can move along the first direction; The optical focal lengths of the reflection component and the zoom lens component are positive values, and the optical focal length of the focus lens component is negative value.

2. The zoom optical system according to claim 1, characterized in that: There is a first position and a second position between the reflection assembly, the zoom lens assembly and the focus lens assembly; The zoom optical system operates at the first position, the second position, and any position between the first position and the second position. At the first position, the focal length of the zoom optical system is a first focal length. At the second position, the focal length of the zoom optical system is a second focal length. The first focal length and the second focal length satisfy: a≤ft÷fw≤b. Wherein, ft is the first focal length, fw is the second focal length, a is the first threshold, and b is the second threshold.

3. The zoom optical system according to claim 2, characterized in that: The focal length of the reflective component is a third focal length, and the first focal length and the third focal length satisfy: f1>2×ft; Among them, ft is the first focal length, and f1 is the third focal length.

4. The zoom optical system according to claim 3, characterized in that: The focal length of the zoom lens assembly is a fourth focal length, and the focal length of the focus lens assembly is a fifth focal length; Wherein, the fifth focal length and the fourth focal length satisfy: c<|f3÷f2| <d; Among them, f2 is the fourth focal length, f3 is the fifth focal length, c is the third threshold, and d is the fourth threshold.

5. The zoom optical system according to claim 2, wherein: Between the first position and the second position, the maximum movement stroke of the zoom lens assembly satisfies: e×(ft-fw) <D1<j×(ft-fw); Wherein, D1 is the moving stroke of the zoom lens assembly, ft is the first focal length, fw is the second focal length, e is the first preset value, and j is the second preset value.

6. The zoom optical system according to claim 2, wherein: Between the first position and the second position, the maximum movement stroke of the focus lens assembly satisfies: g×(ft-fw) <D2<h×(ft-fw); Among them, D2 is the moving stroke of the focusing lens assembly, ft is the first focal length, fw is the second focal length, g is the third preset value, and h is the fourth preset value.

7. The zoom optical system according to any one of claims 1 to 6, characterized in that: The reflective component comprises: A first prism, the first prism comprising a first incident surface, a first reflecting surface and a first emitting surface; The optical focal length of the first prism is positive, and the first exit surface is opposite to the zoom lens assembly.

8. The zoom optical system according to claim 7, characterized in that: The first incident surface is a convex surface, the first incident surface is an aspherical surface, and the first exit surface is a plane or a concave surface.

9. The zoom optical system according to any one of claims 1 to 6, characterized in that: The reflective component comprises: A second prism, the second prism comprising a second incident surface, a second reflecting surface, and a second emitting surface; a first lens, the first lens being opposite to the second incident surface; The optical power of the first lens is positive, and the second exit surface is opposite to the zoom lens assembly.

10. The zoom optical system according to claim 9, characterized in that: Both side surfaces of the first lens are aspherical surfaces.

11. The zoom optical system according to any one of claims 1 to 6, characterized in that: The zoom lens assembly comprises: At least three second lenses are arranged at intervals along the first direction.

12. The zoom optical system according to any one of claims 1 to 6, characterized in that: The focusing lens assembly comprises: At least two third lenses are arranged at intervals along the first direction.

13. The zoom optical system according to claim 12, characterized in that: The third lens is an aspherical lens.

14. A lens module, characterized in that: include: The zoom optical system according to any one of claims 1 to 13; A filter, wherein a light incident surface of the filter is opposite to a light exit surface of the zoom optical system; A photosensitive chip, wherein the photosensitive chip is opposite to the light emitting surface of the filter.

15. The lens module according to claim 14, characterized in that: Also includes: A driving member is connected to the reflection assembly, the zoom lens assembly and the focus lens assembly, and is used to drive at least one of the reflection assembly, the zoom lens assembly and the focus lens assembly to move along the first direction.

16. An electronic device, characterized in that: include: A main board and a lens module as described in claim 14 or 15, wherein the lens module is electrically connected to the main board.

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