Optical zoom system, lens module, and electronic device

Abstract

An optical zoom system (100), a lens module (200), and an electronic device (300). The optical zoom system (100) comprises a reflection assembly (102), a zoom lens assembly (104), and a focusing lens assembly (106); the reflection assembly (102), the zoom lens assembly (104) and the focusing lens assembly (106) are arranged at intervals in a first direction; at least one of the reflection assembly (102), the zoom lens assembly (104) and the focusing lens assembly (106) can move in the first direction; the reflection assembly (102) and the zoom lens assembly (104) have positive focal power; and the focusing lens assembly (106) has negative focal power.

Description

Zoom optical systems, lens modules and electronic devices

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411543899.1, filed on October 31, 2024, entitled "Zoom Optical System, Lens Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of electronic equipment technology, specifically relating to a zoom optical system, a lens module, and an electronic device. Background Technology

[0004] In related technologies, camera devices in electronic devices often require multiple different optical systems to achieve a wider range of shooting effects. For example, to improve the photographic effects at different focal lengths in telephoto shooting modes, such as 3x and 5x zoom, camera devices typically employ two optical systems to achieve 3x and 5x zoom respectively. This increases the size and weight of the camera device, hindering the miniaturization design of electronic devices. Furthermore, the use of digital zoom in camera devices, with different optical systems handling different focal length shooting needs, leads to a loss of image quality. Summary of the Invention

[0005] This application aims to provide a zoom optical system, lens module, and electronic device that can solve the technical problems in the related art where the use of multiple optical systems leads to an increase in the size and weight of the camera device and poor image quality.

[0006] In a first aspect, embodiments of this application propose a zoom optical system, comprising:

[0007] The reflective assembly, the zoom lens assembly, and the focusing lens assembly are arranged at intervals along a first direction, and at least one of the reflective assembly, the zoom lens assembly, and the focusing lens assembly is movable along the first direction.

[0008] The optical power of the reflective component and the zoom lens component is positive, while the optical power of the focusing lens component is negative.

[0009] Secondly, embodiments of this application provide a lens module, including: a zoom optical system as described in the first aspect; a filter, the light-incident surface of which is opposite to the light-outceasing surface of the zoom optical system; and a photosensitive chip, the photosensitive chip being opposite to the light-outceasing surface of the filter.

[0010] Thirdly, embodiments of this application provide an electronic device, including: a lens module as described in the second aspect.

[0011] The zoom optical system of this application embodiment, by setting up a reflective component, a zoom lens component, and a focusing lens component, and further adjusting the relative positions of the reflective component, the zoom lens component, and the focusing lens component, can achieve zooming and focusing, realizing physical optical zoom and thus ensuring image quality during shooting. Furthermore, different focal length shooting modes can be achieved with a single zoom optical system. Therefore, electronic devices using the zoom optical system of this application embodiment do not need to set up multiple optical systems to achieve different focal length shooting modes, effectively reducing the size and weight of the electronic device. In addition, the reflective component also has optical power. During shooting, the reflective component can cooperate with the zoom lens component and the focusing lens component to zoom and focus the light, thereby saving the length of the zoom lens component and the focusing lens component, further reducing the overall length of the zoom optical system, and further reducing the size and weight of the zoom optical system.

[0012] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 shows one of the structural schematic diagrams of the zoom optical system according to an embodiment of this application;

[0015] Figure 2 shows a second schematic diagram of the zoom optical system according to an embodiment of this application;

[0016] Figure 3 shows a third schematic diagram of the zoom optical system according to an embodiment of this application;

[0017] Figure 4 shows the chromatic aberration curve of the zoom optical system in Figure 2;

[0018] Figure 5 shows the chromatic aberration curve of the zoom optical system in Figure 3;

[0019] Figure 6 shows the modulation transfer function curve of the zoom optical system in Figure 2;

[0020] Figure 7 shows the modulation transfer function curve of the zoom optical system in Figure 3;

[0021] Figure 8 shows a fourth schematic diagram of the zoom optical system according to an embodiment of this application;

[0022] Figure 9 shows a fifth schematic diagram of the zoom optical system according to an embodiment of this application;

[0023] Figure 10 shows the chromatic aberration curve of the zoom optical system in Figure 8;

[0024] Figure 11 shows the chromatic aberration curve of the zoom optical system in Figure 9;

[0025] Figure 12 shows the modulation transfer function curve of the zoom optical system in Figure 8;

[0026] Figure 13 shows the modulation transfer function curve of the zoom optical system in Figure 9;

[0027] Figure 14 shows a sixth schematic diagram of the zoom optical system according to an embodiment of this application;

[0028] Figure 15 shows a seventh schematic diagram of the zoom optical system according to an embodiment of this application;

[0029] Figure 16 shows the chromatic aberration curve of the zoom optical system in Figure 14;

[0030] Figure 17 shows the chromatic aberration curve of the zoom optical system in Figure 15;

[0031] Figure 18 shows the modulation transfer function curve of the zoom optical system in Figure 14;

[0032] Figure 19 shows the modulation transfer function curve of the zoom optical system in Figure 15;

[0033] Figure 20 shows an eighth schematic diagram of the zoom optical system according to an embodiment of this application;

[0034] Figure 21 shows a ninth schematic diagram of the zoom optical system according to an embodiment of this application;

[0035] Figure 22 shows the chromatic aberration curve of the zoom optical system in Figure 20;

[0036] Figure 23 shows the chromatic aberration curve of the zoom optical system in Figure 21;

[0037] Figure 24 shows the modulation transfer function curve of the zoom optical system in Figure 20;

[0038] Figure 25 shows the modulation transfer function curve of the zoom optical system in Figure 21;

[0039] Figure 26 shows a schematic diagram of the lens module according to an embodiment of this application;

[0040] Figure 27 shows a structural block diagram of an electronic device according to an embodiment of this application.

[0041] Reference numerals: 100 zoom optical system, 102 reflective assembly, 104 zoom lens assembly, 106 focusing lens assembly, 108 first prism, 110 first incident surface, 112 first reflecting surface, 114 first exit surface, 116 second prism, 118 second incident surface, 120 second reflecting surface, 122 second exit surface, 124 first lens, 126 second lens, 128 third lens, 200 lens module, 202 filter, 204 image sensor, 300 electronic device. Detailed Implementation

[0042] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] 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 stated, "a plurality of" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] The zoom optical system, lens module, and electronic device according to embodiments of this application are described below with reference to Figures 1 to 27.

[0046] In some embodiments of this application, a zoom optical system is provided. FIG1 shows a schematic diagram of one of the structures of the zoom optical system according to an embodiment of this application. As shown in FIG1, the zoom optical system 100 includes: a reflective component 102, a zoom lens component 104, and a focusing lens component 106. The reflective component 102, the zoom lens component 104, and the focusing lens component 106 are arranged at intervals along a first direction. At least one of the reflective component 102, the zoom lens component 104, and the focusing lens component 106 is movable along the first direction. The optical power of the reflective component 102 and the zoom lens component 104 is positive, and the optical power of the focusing lens component 106 is negative.

[0047] In this embodiment, the zoom optical system 100 includes a reflective component 102, a zoom lens assembly 104, and a focusing lens assembly 106, which are arranged at intervals along a first direction. The reflective component 102 can reflect light during the shooting process, allowing light to pass through the zoom lens assembly 104 and the focusing lens assembly 106 along the first direction, thereby achieving zooming and focusing of the light, and ultimately enabling the zoom optical system 100 to capture images.

[0048] Furthermore, at least one of the reflecting component 102, the zoom lens assembly 104, and the focusing lens assembly 106 can be moved along a first direction, thereby adjusting the relative positions between the reflecting component 102, the zoom lens assembly 104, and the focusing lens assembly 106, and thus achieving zooming and focusing. In other words, the zoom optical system 100 of this application achieves zooming and focusing by adjusting the relative positions between the reflecting component 102, the zoom lens assembly 104, and the focusing lens assembly 106, which enables physical optical zoom and ensures image quality during shooting.

[0049] Furthermore, by adjusting the relative positions of the reflective component 102, the zoom lens component 104, and the focusing lens component 106, switching between different focal length segments can be achieved. In other words, different focal length shooting modes can be achieved through a single zoom optical system 100. Therefore, electronic devices using the zoom optical system 100 of this application embodiment do not need to set up multiple optical systems to achieve different focal length shooting modes, which can effectively reduce the size and weight of electronic devices.

[0050] Furthermore, the optical power of the reflective component 102 and the zoom lens assembly 104 is positive, while the optical power of the focusing lens assembly 106 is negative. That is, in this embodiment of the zoom optical system 100, not only do the zoom lens assembly 104 and the focusing lens assembly 106 have optical power to achieve zooming and focusing during the shooting process, but the reflective component 102 also has optical power. By setting the optical power of the reflective component 102, the zoom lens assembly 104, and the focusing lens assembly 106, the zoom optical system 100 can be guaranteed to perform normal shooting. Therefore, during the shooting process, the reflective component 102 can cooperate with the zoom lens assembly 104 and the focusing lens assembly 106 to zoom and focus the light, thereby saving the length of the zoom lens assembly 104 and the focusing lens assembly 106, thus reducing the overall length of the zoom optical system 100, and further reducing the size and weight of the zoom optical system.

[0051] The zoom optical system 100 of this application embodiment, by setting up a reflective component 102, a zoom lens component 104, and a focusing lens component 106, and further adjusting the relative positions of the reflective component 102, the zoom lens component 104, and the focusing lens component 106, can achieve zooming and focusing, realizing physical optical zoom and thus ensuring image quality during shooting. Furthermore, different focal length shooting modes can be achieved with a single zoom optical system 100. Therefore, electronic devices using the zoom optical system 100 of this application embodiment do not need to set up multiple optical systems to achieve different focal length shooting modes, effectively reducing the size and weight of the electronic device. In addition, the reflective component 102 also has optical power. During shooting, the reflective component 102 can cooperate with the zoom lens component 104 and the focusing lens component 106 to zoom and focus the light, thereby saving the length of the zoom lens component 104 and the focusing lens component 106, further reducing the overall length of the zoom optical system 100, and further reducing the size and weight of the zoom optical system.

[0052] In some embodiments of this application, the reflective assembly 102, the zoom lens assembly 104, and the focusing lens assembly 106 have a first position and a second position, wherein the zoom optical system 100 operates in the first position, the second position, and any position between the first and second positions. In the first position, the focal length of the zoom optical system 100 is a first focal length, and in the second position, the focal length of the zoom optical system 100 is a second focal length. The first focal length and the second focal length satisfy: a≤ft÷fw≤b;

[0053] Where ft is the first focal length, fw is the second focal length, a is the first threshold, and b is the second threshold.

[0054] In this embodiment, switching between different focal length segments can be achieved by adjusting the relative positions of the reflective component 102, the zoom lens assembly 104, and the focusing lens assembly 106. Specifically, the reflective component 102, the zoom lens assembly 104, and the focusing lens assembly 106 have a first position and a second position, and the zoom optical system 100 can operate in any position between the first position, the second position, and the first position and the second position. In the first position, the zoom optical system is in a first shooting mode, for example, a telephoto mode. In the second position, the zoom optical system is in a second shooting mode, for example, a wide-angle mode.

[0055] Furthermore, in the first shooting mode, the focal length of the zoom optical system 100 is a first focal length, and in the second shooting mode, the focal length of the zoom optical system 100 is a second focal length. Simultaneously, the first focal length and the second focal length satisfy a ≤ ft ÷ fw ≤ b; where ft is the first focal length, fw is the second focal length, a is a first threshold, and b is a 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 operating 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, where ft is the first focal length and fw is the second focal length.

[0056] By setting the relationship between the first focal length and the second focal length, the zoom optical system 100 can be guaranteed to have a suitable zoom ratio, thereby enabling the zoom optical system 100 to have good shooting effects for different shooting environments.

[0057] For example, as shown in Figures 2, 8, 14, and 20, the reflective component 102, the zoom lens assembly 104, and the focusing lens assembly 106 are in a first position, meaning the zoom optical system 100 is in a first shooting mode. As shown in Figures 3, 9, 15, and 21, the reflective component 102, the zoom lens assembly 104, and the focusing lens assembly 106 are in a second position, meaning the zoom optical system 100 is in a second shooting mode.

[0058] In some embodiments of this application, the focal length of the reflective component 102 is a 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.

[0059] In this embodiment, the focal length of the reflective component 102 is a third focal length, and the third focal length satisfies: f1 > 2 × ft, where f1 is the third focal length and ft is the first focal length. That is, the third focal length is greater than twice the first focal length, which means the third focal length of the reflective component 102 is greater than the first focal length of the zoom optical system 100 in the first shooting mode.

[0060] By setting the third focal length of the reflective component 102, the reflective component 102 can both achieve the effect of light convergence and minimize the optical power of the reflective component 102, thereby reducing the image stabilization sensitivity of the zoom optical system 100 and improving the image stabilization effect of the zoom optical system.

[0061] In some embodiments of the present application, the focal length of the zoom lens assembly 104 is the fourth focal length, and the focal length of the focusing lens assembly 106 is the fifth focal length; wherein, 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.

[0062] In an embodiment of the present application, the focal lengths of the zoom lens assembly 104 and the focusing lens assembly 106 are the fourth focal length and the fifth focal length respectively, and 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 operating 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, the fourth focal length and the fifth focal length satisfy: 0.8 < |f3 ÷ f2| < 1.5.

[0063] 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 have a large convergence, thereby effectively improving the imaging quality during the shooting process.

[0064] In some embodiments of the present application, between the first position and the second position, the maximum moving stroke of the zoom lens assembly 104 satisfies: e × (ft - fw) < D1 < j × (ft - fw); where D1 is the moving 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.

[0065] In an embodiment 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 moving stroke D1 of the zoom lens assembly 1 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 operating 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).

[0066] By setting the maximum moving 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, it can reduce the maximum stroke of the zoom lens assembly 104 and lower the requirement for the driving motor of the zoom lens assembly 104. On the other hand, it can also ensure that the zoom lens assembly 104 has appropriate sensitivity and ensure that the zoom optical system 100 can achieve a fast and accurate zoom process.

[0067] In some embodiments of the present application, between the first position and the second position, the maximum moving stroke of the focusing lens assembly 106 satisfies: g×(ft-fw)<D2<h×(ft-fw); where D2 is the moving 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.

[0068] 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 moving stroke D2 of the focusing lens assembly 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).

[0069] By setting the maximum moving stroke of the focusing lens assembly 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 assembly 106 and lower the requirement for the driving motor of the focusing lens assembly 106. On the other hand, it can also ensure that the focusing lens assembly 106 has appropriate sensitivity and ensure that the zoom optical system 100 can achieve a fast and accurate zoom process.

[0070] In some embodiments of the present application, the reflection assembly 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 assembly 104.

[0071] In this embodiment of the application, as shown in FIG1, the reflective assembly 102 may include a first prism 108, wherein the first prism 108 includes a first incident surface 110. It is 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 also includes a first reflecting surface 112 and a first exiting surface 114, and the first exiting surface 114 is opposite to the zoom lens assembly 104. During the shooting process, after light enters the first prism 108 through the first incident surface 110, it is reflected by the first reflecting surface 112, and then propagates along a first direction. After passing through the first exiting surface 114 of the first prism 108, the light sequentially enters the zoom lens assembly 104 and the focusing lens assembly 106.

[0072] Furthermore, the optical power of the first prism 108 is positive, meaning that while changing the propagation path of light, the first prism 108 also has optical power. This allows it to work with the zoom lens assembly 104 and the focusing lens assembly 106 to zoom and focus light, thereby saving the length of the zoom lens assembly 104 and the focusing lens assembly 106, and further reducing the overall length of the zoom optical system 100, thus further reducing the volume and weight of the zoom optical system.

[0073] In some embodiments of this application, the first incident surface 110 is a convex surface and an aspherical surface, and the first exit surface 114 is a planar or concave surface.

[0074] In this embodiment, the first incident surface 110 of the first prism 108 can be configured as a convex surface, thereby converging light to further increase the amount of light entering the camera and improve the image quality. Furthermore, the first incident surface 110 can also be configured as an aspherical surface, thereby further enhancing the light processing effect of the first prism 108 and further improving the image quality of the zoom optical system 100.

[0075] Furthermore, the first exit surface 114 of the first prism 108 can be configured as a plane or a concave surface, thereby ensuring that light can propagate along the first direction to the zoom lens assembly 104 and the focusing lens assembly 106 after passing through the first exit surface 114.

[0076] In some embodiments of this application, the reflective assembly 102 includes: a second prism 116, which includes a second incident surface 118, a second reflecting surface 120, and a second exiting surface 122; a first lens 124, which is opposite to the second incident surface 118; wherein the optical power of the first lens 124 is positive, and the second exiting surface 122 is opposite to the zoom lens assembly 104.

[0077] In this embodiment of the application, Figure 20 shows an eighth schematic diagram of the zoom optical system of this embodiment; Figure 21 shows a ninth schematic diagram of the zoom optical system of this embodiment. As shown in Figures 20 and 21, the reflective 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. Further, the second prism 116 also includes a second reflecting surface 120 and a second exiting surface 122, and the second exiting 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, it is reflected by the second reflecting surface 120 and can propagate along the first direction. After passing through the second exit surface 122 of the second prism 116, the light enters the zoom lens assembly 104 and the focusing lens assembly 106 in sequence.

[0078] Furthermore, the optical power of the first lens 124 is positive, thereby enabling the reflective assembly 102 to have optical power. This allows the reflective assembly 102 to work with the zoom lens assembly 104 and the focusing lens assembly 106 to zoom and focus light, thereby saving the length of the zoom lens assembly 104 and the focusing lens assembly 106, reducing the overall length of the zoom optical system 100, and further reducing the volume and weight of the zoom optical system.

[0079] In some embodiments of this application, both sides of the first lens 124 are aspherical.

[0080] In this embodiment, by setting both sides of the first lens 124 as aspherical, the imaging effect of the zoom optical system 100 can be effectively improved. It is understood that aspherical lenses have higher optical performance and can effectively reduce aberrations, thereby improving image sharpness and quality. Furthermore, especially compared to the aberrations produced by spherical lenses, the aspherical shape can better meet the needs of the zoom optical system 100, reducing or eliminating the inherent aberrations of spherical lenses and improving the imaging quality of the zoom optical system 100.

[0081] Specifically, in a Cartesian coordinate system, the expression for an aspherical surface is:

[0082] In the Cartesian coordinate system, the horizontal axis is the x-axis, the vertical axis is the z-axis, c is the surface curvature at different positions of the aspheric surface, K is the conic constant, and A, B, C, D, E, F, and G are the aspheric coefficients.

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

[0084] In this embodiment of the application, as shown in FIG1, the zoom lens assembly 104 may include at least three second lenses 126. During the shooting process, after the light is reflected by the reflective component 102, it propagates to the zoom lens assembly 104 along the first direction, 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 meet 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 can all be aspherical lenses, thereby improving the optical performance of the zoom lens assembly 104, effectively reducing aberrations, and thus improving the clarity and quality of the image formed by the zoom optical system 100.

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

[0087] In this embodiment of the application, as shown in FIG1, the focusing lens assembly 106 may include at least two third lenses 128. During the shooting process, after the light is reflected by the reflecting 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, the light is zoomed. 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, the light is focused to meet the shooting requirements of different focal lengths of the zoom optical system 100.

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

[0089] In this embodiment, 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 thus improving the clarity and quality of the zoom optical system 100 imaging.

[0090] This application embodiment also provides a lens module. FIG26 shows a schematic diagram of the structure of the lens module of this application embodiment. As shown in FIG26, the lens module 200 includes a zoom optical system 100 as described in any of the above embodiments; a filter 202, the light-incident surface of the filter 202 being opposite to the light-out surface of the zoom optical system 100; and a photosensitive chip 204, the photosensitive chip 204 being opposite to the light-out surface of the filter 202.

[0091] In this embodiment, the lens module 200 includes a zoom optical system 100 as described in any of the above embodiments, a filter 202, and a photosensitive chip 204. The light-incident surface of the filter 202 faces the light-exiting 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, removing infrared and other light rays to ensure image quality. Furthermore, the photosensitive chip 204 faces the light-exiting surface of the filter 202. After being filtered, the light is processed by the photosensitive chip 204 to achieve image formation.

[0092] Furthermore, the lens module 200 provided in this application embodiment has the beneficial effects of any of the above embodiments since it has the zoom optical system 100 as described in any of the above embodiments, which will not be elaborated here.

[0093] In some embodiments of this application, the lens module 200 further includes a driving member (not shown in the figure), connected to the reflection assembly 102, the zoom lens assembly 104 and the focusing lens assembly 106, for driving at least one of the reflection assembly 102, the zoom lens assembly 104 and the focusing lens assembly 106 to move along a first direction.

[0094] In this embodiment of the application, by providing a driving component, at least one of the reflective component 102, the zoom lens component 104, and the focusing lens component 106 can be driven so that at least one of the reflective component 102, the zoom lens component 104, and the focusing lens component 106 moves along a first direction, thereby realizing the zoom and focusing process.

[0095] Furthermore, the driving component can also drive the reflective component 102 to form a stabilization component in conjunction with the transmitting component. That is, during the shooting process, the driving component can drive the reflective component 102 to move accordingly according to the shaking process of the lens module 200 to achieve stabilization shooting.

[0096] For example, as shown in Figures 2 and 3, where Figure 2 shows the zoom optical system 100 in a first shooting mode and Figure 3 shows the zoom optical system 100 in a second shooting mode. The zoom optical system 100 includes a reflective component 102, a zoom lens component 104, and a focusing lens component 106. The reflective component 102 includes a first prism 108, the incident surface of which is aspherical, the reflecting surface is planar, and the exit surface is planar. During the zooming process of the zoom optical system 100, the first prism 108 can move along a first direction.

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

[0098] 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, wherein lens L5 has a negative optical power, lens L6 has a positive optical power, and lens L7 has a negative optical power. All three third lenses 128 are aspherical lenses. During the zooming process of the zoom optical system 100, the focusing 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] Where f1 is the focal length of the reflective component 102, f2 is the focal length of the zoom lens component 104, and f3 is the focal length of the focusing lens component 106.

[0102] Furthermore, the parameters of each lens in the reflection assembly 102, zoom lens assembly 104, and focusing lens assembly 106 are shown in Table 2:

[0103] Table 2

[0104] S1 to S20 are the serial numbers of the surfaces through which the light passes, respectively.

[0105] Furthermore, the coefficients of the aspherical higher-order terms S1 to S17 are shown in Table 3:

[0106] Table 3

[0107] S4 (stop) indicates that an aperture is provided on the surface of S4.

[0108] Furthermore, in the first shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 4, and the modulation transfer function of the zoom optical system 100 is shown in Figure 6. In the second shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 5, and the modulation transfer function of the zoom optical system 100 is shown in Figure 7. It can be seen that in this embodiment, the transverse chromatic aberration of the zoom optical system 100 is controlled within a very small range in both the first and second shooting modes, and the chromatic aberration convergence is good. Moreover, at a spatial frequency of 100 lp / mm, the modulation transfer function across the entire field of view is greater than 0.5, exhibiting extremely high resolution.

[0109] For example, as shown in Figures 8 and 9, where Figure 8 shows the zoom optical system 100 in a first shooting mode and Figure 9 shows the zoom optical system 100 in a second shooting mode. The zoom optical system 100 includes a reflective component 102, a zoom lens component 104, and a focusing lens component 106. The reflective component 102 includes a first prism 108, the incident surface of which is aspherical, the reflecting surface is planar, and the exit surface is planar.

[0110] 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, and lens L4, respectively. Lens L1 has a negative optical power, lens L2 has a positive optical power, lens L3 has a negative optical power, and lens L4 has a positive optical power. All four second lenses 126 are aspherical lenses.

[0111] Furthermore, the focusing lens assembly 106 includes three third lenses 128 along the first direction, namely lens L5, lens L6 and lens L7, wherein the optical power of lens L5 is negative, the optical power of lens L6 is positive, and the optical power of lens L7 is negative.

[0112] In this embodiment, during the zooming process of the zoom optical system 100, the position of the reflective component 102 remains unchanged, while the zoom lens component 104 and the focusing lens component 106 move along the first direction.

[0113] Specifically, the parameters of the zoom optical system 100 during the shooting process are shown in Table 4:

[0114] Table 4

[0115] Where f1 is the focal length of the reflective component 102, f2 is the focal length of the zoom lens component 104, and f3 is the focal length of the focusing lens component 106.

[0116] Furthermore, the parameters of each lens in the reflection assembly 102, zoom lens assembly 104, and focusing lens assembly 106 are shown in Table 5:

[0117] Table 5

[0118] S1 to S20 are the serial numbers of the surfaces through which the light passes, respectively.

[0119] Furthermore, the coefficients of the aspherical higher-order terms S1 to S19 are shown in Table 6:

[0120] Table 6

[0121] S4 (stop) indicates that an aperture is provided on the surface of S4.

[0122] Furthermore, in the first shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 10, and the modulation transfer function of the zoom optical system 100 is shown in Figure 12. In the second shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 11, and the modulation transfer function of the zoom optical system 100 is shown in Figure 13. It can be seen that in this embodiment, the transverse chromatic aberration of the zoom optical system 100 is controlled within a very small range in both the first and second shooting modes, and the chromatic aberration convergence is good. Moreover, at a spatial frequency of 100 lp / mm, the modulation transfer function across the entire field of view is greater than 0.5, exhibiting extremely high resolution.

[0123] For example, as shown in Figures 14 and 15, where Figure 14 shows the zoom optical system 100 in a first shooting mode and Figure 15 shows the zoom optical system 100 in a second shooting mode. The zoom optical system 100 includes a reflective assembly 102, a zoom lens assembly 104, and a focusing lens assembly 106, wherein the reflective assembly 102 includes a first prism 108.

[0124] 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, and all five second lenses 126 are aspherical lenses.

[0125] Furthermore, the focusing lens assembly 106 includes three third lenses 128, which are lens L6, lens L7 and lens L8 respectively along the first direction.

[0126] In this embodiment, during the zooming process of the zoom optical system 100, the position of the reflective component 102 remains unchanged, while the zoom lens component 104 and the focusing lens component 106 move along the first direction.

[0127] Specifically, the parameters of the zoom optical system 100 during the shooting process are shown in Table 7:

[0128] Table 7

[0129] Where f1 is the focal length of the reflective component 102, f2 is the focal length of the zoom lens component 104, and f3 is the focal length of the focusing lens component 106.

[0130] Furthermore, the parameters of each lens in the reflection assembly 102, zoom lens assembly 104, and focusing lens assembly 106 are shown in Table 8:

[0131] Table 8

[0132] Where S1 to S22 are the serial numbers of the surfaces through which the light passes. Furthermore, the coefficients of the higher-order aspherical terms S1 to S19 are shown in Table 9:

[0133] Table 9

[0134] S4 (stop) indicates that an aperture is provided on the surface of S4.

[0135] Furthermore, in the first shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 16, and the modulation transfer function of the zoom optical system 100 is shown in Figure 18. In the second shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 17, and the modulation transfer function of the zoom optical system 100 is shown in Figure 19. It can be seen that in this embodiment, the transverse chromatic aberration of the zoom optical system 100 is controlled within a very small range in both the first and second shooting modes, and the chromatic aberration convergence is good. Moreover, at a spatial frequency of 100 lp / mm, the modulation transfer function across the entire field of view is greater than 0.5, exhibiting extremely high resolution.

[0136] For example, as shown in Figures 20 and 21, where Figure 20 shows the zoom optical system 100 in a first shooting mode and Figure 21 shows the zoom optical system 100 in a second shooting mode, the zoom optical system 100 includes a reflective assembly 102, a zoom lens assembly 104, and a focusing lens assembly 106. The reflective assembly 102 includes a first lens 124 and a second prism 116. The incident surface of the second prism 116 is aspherical, the reflecting surface is planar, and the exit surface is planar.

[0137] 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, and lens L4, respectively. Lens L1 has a negative optical power, lens L2 has a positive optical power, lens L3 has a negative optical power, and lens L4 has a positive optical power. All four second lenses 126 are aspherical lenses.

[0138] Furthermore, the focusing lens assembly 106 includes three third lenses 128 along the first direction, namely lens L5, lens L6 and lens L7, wherein the optical power of lens L5 is negative, the optical power of lens L6 is positive, and the optical power of lens L7 is negative.

[0139] Specifically, the parameters of the zoom optical system 100 during the shooting process are shown in Table 10:

[0140] Table 10

[0141] Where f1 is the focal length of the reflective component 102, f2 is the focal length of the zoom lens component 104, and f3 is the focal length of the focusing lens component 106.

[0142] Furthermore, the parameters of each lens in the reflection assembly 102, the zoom lens assembly 104, and the focusing lens assembly 106 are shown in Table 11:

[0143] Table 11

[0144] Where S1 to S22 are the serial numbers of the surfaces through which the light passes. Furthermore, the coefficients of the higher-order aspherical terms S1 to S19 are shown in Table 12:

[0145] Table 12

[0146] S6 (stop) indicates that an aperture is provided on the surface of S6.

[0147] Furthermore, in the first shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 22, and the modulation transfer function of the zoom optical system 100 is shown in Figure 24. In the second shooting mode, the transverse chromatic aberration of the zoom optical system 100 is shown in Figure 23, and the modulation transfer function of the zoom optical system 100 is shown in Figure 25. It can be seen that in this embodiment, the transverse chromatic aberration of the zoom optical system 100 is controlled within a very small range in both the first and second shooting modes, and the chromatic aberration convergence is good. Moreover, at a spatial frequency of 100 lp / mm, the modulation transfer function across the entire field of view is greater than 0.5, exhibiting extremely high resolution.

[0148] This application embodiment also provides an electronic device 300. FIG27 shows a schematic diagram of the structure of the electronic device according to this application embodiment. As shown in FIG27, the electronic device 300 includes a motherboard and a lens module 200 as described in any of the above embodiments. The lens module 200 is electrically connected to the motherboard.

[0149] The electronic device 300 provided in this application includes a motherboard and a lens module 200 as described in any of the above embodiments. The lens module 200 is electrically connected to the motherboard, enabling control of the operation of the lens module 200 via a control chip on the motherboard. Furthermore, the electronic device 300 of this application, having the lens module 200 as described in any of the above embodiments, possesses the beneficial effects of any of the above embodiments, which will not be elaborated upon here.

[0150] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0151] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A zoom optical system, comprising: The system includes a reflective component, a zoom lens assembly, and a focusing lens assembly, wherein the reflective component, the zoom lens assembly, and the focusing lens assembly are arranged at intervals along a first direction, and at least one of the reflective component, the zoom lens assembly, and the focusing lens assembly is movable along the first direction. The optical power of the reflective component and the zoom lens component is positive, while the optical power of the focusing lens component is negative.

2. The zoom optical system according to claim 1, wherein, The reflection component, the zoom lens component, and the focusing lens component have a first position and a second position; The zoom optical system operates at the first position, the second position, and any position between the first and second positions. At the first position, the focal length of the zoom optical system is a first focal length, and 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. Where 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, wherein, The focal length of the reflective component 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.

4. The zoom optical system according to claim 3, wherein, The zoom lens assembly has a fourth focal length, and the focusing lens assembly has a fifth focal length. Wherein, 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.

5. The zoom optical system according to claim 2, wherein, Between the first position and the second position, the maximum travel distance of the zoom lens assembly satisfies: e×(ft-fw) <D1<j×(ft-fw); Wherein, D1 is the travel distance 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 travel distance of the focusing lens assembly satisfies: g×(ft-fw) <D2<h×(ft-fw); Wherein, D2 is the travel distance 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, wherein, The reflective component includes: The first prism includes a first incident surface, a first reflecting surface, and a first exiting surface; The first prism has a positive optical power, and the first exit surface is opposite to the zoom lens assembly.

8. The zoom optical system according to claim 7, wherein, The first incident surface is convex and aspherical, and the first exit surface is planar or concave.

9. The zoom optical system according to any one of claims 1 to 6, wherein, The reflective component includes: The second prism includes a second incident surface, a second reflecting surface, and a second exiting surface. A first lens, which is opposite to the second incident surface; The first lens has a positive optical power, and the second exit surface is opposite to the zoom lens assembly.

10. The zoom optical system according to claim 9, wherein, Both sides of the first lens are aspherical.

11. The zoom optical system according to any one of claims 1 to 6, wherein, The zoom lens assembly includes: 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, wherein, The focusing lens assembly includes: At least two third lenses, the at least two third lenses being arranged at intervals along the first direction.

13. The zoom optical system according to claim 12, wherein, The third lens is an aspherical lens.

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

15. The lens module according to claim 14, wherein, Also includes: A driving component, connected to the reflecting assembly, the zoom lens assembly, and the focusing lens assembly, is used to drive at least one of the reflecting assembly, the zoom lens assembly, and the focusing lens assembly to move along the first direction.

16. An electronic device comprising: The motherboard and the lens module as described in claim 14 or 15, wherein the lens module is electrically connected to the motherboard.

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