Optical zoom lens, camera module and electronic equipment

Abstract

The invention relates to the technical field of optical imaging, and particularly discloses an optical zoom lens, a camera module and electronic equipment, so that the imaging quality of the optical zoom lens is ensured while the optical zoom lens has a relatively large zoom range. The optical zoom lens comprises a first lens group and a second lens group, the first lens group has positive refractive power, and the first lens group can move along an optical path of the optical zoom lens; the second lens group has negative refractive power. The optical zoom lens has a first state and a second state, when the optical zoom lens is in the first state, the first lens group is located at a first position, and the second lens group is located outside an optical path of the optical zoom lens; when the optical zoom lens is in the second state, the first lens group is located at the second position, and the second lens group is located in the optical path of the optical zoom lens.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, specifically to an optical zoom lens, a camera module, and an electronic device. Background Technology

[0002] Continuous zoom lenses achieve continuous focal length changes by altering the spacing between their internal lens elements. Current continuous zoom lens architectures require a high degree of lens sharing across different focal lengths, resulting in a smaller focal length range and reduced image performance after focal length changes. Summary of the Invention

[0003] In view of the above, it is necessary to propose an optical zoom lens, a camera module, and an electronic device that can ensure the image quality of the optical zoom lens while giving it a large zoom range.

[0004] In a first aspect, embodiments of this application provide an optical zoom lens, comprising: a first lens group having positive refractive power, the first lens group being movable along the optical path of the optical zoom lens; and a second lens group having negative refractive power; the optical zoom lens has a first state and a second state, wherein when the optical zoom lens is in the first state, the first lens group is located at a first position, and the second lens group is located outside the optical path of the optical zoom lens; and when the optical zoom lens is in the second state, the first lens group is located at a second position, and the second lens group is located within the optical path of the optical zoom lens; the optical zoom lens satisfies the following relationship: 0.8≤Rg1-1 / Rg1-n≤1.8, or -0.6≤Rg1-n / Rg2-1≤-0.1; wherein Rg1-1 is the radius of curvature of the incident surface of the first lens group at the optical axis, Rg1-n is the radius of curvature of the emitting surface of the first lens group at the optical axis, and Rg2-1 is the radius of curvature of the incident surface of the second lens group at the optical axis.

[0005] The aforementioned optical zoom lens achieves switching between two imaging modes by setting it to have a first state (e.g., standard focal length or telephoto) and a second state (e.g., telephoto or super telephoto). When the optical zoom lens is in the first state, the first lens group is located in the first position, and the second lens group is located outside the optical path of the optical zoom lens. The optical zoom lens images through the first lens group with positive refractive power. The first lens group with positive refractive power has the effect of converging light, which helps the optical zoom lens obtain higher contrast and lower astigmatism at this focal length, providing excellent center and edge image quality at this focal length, ensuring the image quality of the optical zoom lens. When the optical zoom lens is in the second state, the first lens group is located in the second position, and the second lens group is located within the optical path of the optical zoom lens. The optical zoom lens images through the first lens group with positive refractive power and the second lens group with negative refractive power. The first lens group with positive refractive power initially converges the light, and the second lens group with negative refractive power pushes the intermediate image formed by the first lens group backward, effectively extending the focal length of the optical zoom lens, thereby achieving the imaging effect of super telephoto. By setting the second lens group to have negative refractive power, it helps to balance the aberrations (such as chromatic aberration and field curvature) of the optical zoom lens, corrects some of the positive aberrations generated by the first lens group, and ensures that the optical zoom lens maintains good image quality even at this long or super long focal length. In this embodiment, the optical zoom lens achieves a wide zoom range by moving the first lens group and combining the entry and exit of the second lens group. Furthermore, through the reasonable configuration of the positive refractive power of the first lens group and the negative refractive power of the second lens group, along with aberration compensation, stable and high-quality image quality can be obtained across the entire focal length range, ensuring the image quality of the optical zoom lens.

[0006] Furthermore, by ensuring that the optical zoom lens satisfies 0.8≤Rg1-1 / Rg1-n≤1.8, and by reasonably configuring the ratio of the incident light surface radius of the first lens group to the exit light surface radius of the first lens group within a certain range, it is possible to promote the smoothness of light deflection, maintain the symmetry of the optical zoom lens, and thus improve the error resistance and imaging quality of the optical zoom lens.

[0007] Furthermore, by ensuring that the optical zoom lens satisfies -0.6≤Rg1-n / Rg2-1≤-0.1, and by rationally configuring the ratio of the radius of curvature of the light-emitting surface of the first lens group to the radius of curvature of the light-receiving surface of the second lens group within a certain range, the second lens group can effectively receive the light from the first lens group, resulting in a smaller angle of incidence of light entering the second lens group. This helps to reduce light energy loss, lower light sensitivity, and improve the imaging quality of the optical zoom lens.

[0008] Secondly, this application also provides a camera module, including: an optical zoom lens as described in the above embodiment; and an image sensor disposed on the image side of the optical zoom lens.

[0009] Thirdly, embodiments of this application also provide an electronic device, including: a housing; and a camera module as described in the above embodiments, wherein the camera module is mounted on the housing.

[0010] Furthermore, the technical effects brought about by the second and third aspects can be found in the technical effects brought about by the embodiments of the first aspect, and will not be repeated here. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the optical zoom lens provided in the embodiment of this application in the first state.

[0012] Figure 2 This is a schematic diagram of the optical zoom lens provided in the embodiment of this application in the second state.

[0013] Figure 3 A is a structural schematic diagram of the optical zoom lens provided in the first embodiment of this application in the first state.

[0014] Figure 3 B is a schematic diagram of the optical zoom lens provided in the first embodiment of this application in the second state.

[0015] Figure 4 A is a structural schematic diagram of the optical zoom lens provided in the second embodiment of this application in the first state.

[0016] Figure 4 B is a structural schematic diagram of the optical zoom lens provided in the second embodiment of this application in the second state.

[0017] Figure 5 A is a structural schematic diagram of the optical zoom lens provided in the third embodiment of this application in the first state.

[0018] Figure 5 B is a structural schematic diagram of the optical zoom lens provided in the third embodiment of this application in the second state.

[0019] Figure 6 A is a structural schematic diagram of the optical zoom lens provided in the fourth embodiment of this application in the first state.

[0020] Figure 6 B is a structural schematic diagram of the optical zoom lens provided in the fourth embodiment of this application in the second state.

[0021] Figure 7 A is a structural schematic diagram of the optical zoom lens provided in the fifth embodiment of this application in the first state.

[0022] Figure 7 B is a schematic diagram of the optical zoom lens provided in the fifth embodiment of this application in the second state.

[0023] Figure 8 A is a structural schematic diagram of the optical zoom lens provided in the sixth embodiment of this application in the first state.

[0024] Figure 8 B is a schematic diagram of the optical zoom lens provided in the sixth embodiment of this application in the second state.

[0025] Figure 9 A is a structural schematic diagram of the optical zoom lens provided in the seventh embodiment of this application in the first state.

[0026] Figure 9 B is a structural schematic diagram of the optical zoom lens provided in the seventh embodiment of this application in the second state.

[0027] Figure 10 A is a structural schematic diagram of the optical zoom lens provided in the eighth embodiment of this application in the first state.

[0028] Figure 10 B is a schematic diagram of the optical zoom lens provided in the eighth embodiment of this application in the second state.

[0029] Figure 11 A is a structural schematic diagram of the optical zoom lens provided in the ninth embodiment of this application in the first state.

[0030] Figure 11 B is a structural schematic diagram of the optical zoom lens provided in the ninth embodiment of this application in the second state.

[0031] Figure 12 A is a structural schematic diagram of the optical zoom lens provided in the tenth embodiment of this application in the first state.

[0032] Figure 12 B is a structural schematic diagram of the optical zoom lens provided in the tenth embodiment of this application in the second state.

[0033] Figure 13 A is a structural schematic diagram of the optical zoom lens provided in the eleventh embodiment of this application in the first state.

[0034] Figure 13 B is a schematic diagram of the optical zoom lens provided in the eleventh embodiment of this application in the second state.

[0035] Figure 14 A is a structural schematic diagram of the optical zoom lens provided in the twelfth embodiment of this application in the first state.

[0036] Figure 14 B is a schematic diagram of the optical zoom lens provided in the twelfth embodiment of this application in the second state.

[0037] Figure 15 A is a structural schematic diagram of the optical zoom lens provided in the thirteenth embodiment of this application in the first state.

[0038] Figure 15 B is a schematic diagram of the optical zoom lens provided in the thirteenth embodiment of this application in the second state.

[0039] Figure 16 A is a structural schematic diagram of the optical zoom lens provided in the fourteenth embodiment of this application in the first state.

[0040] Figure 16 B is a schematic diagram of the optical zoom lens provided in the fourteenth embodiment of this application in the second state.

[0041] Figure 17 A is a schematic diagram of the optical zoom lens provided in the fifteenth embodiment of this application in the first state.

[0042] Figure 17 B is a schematic diagram of the optical zoom lens provided in the fifteenth embodiment of this application in the second state.

[0043] Figure 18 A is a structural schematic diagram of the optical zoom lens provided in the sixteenth embodiment of this application in the first state.

[0044] Figure 18 B is a schematic diagram of the optical zoom lens provided in the sixteenth embodiment of this application in the second state.

[0045] Figure 19 A is a schematic diagram of the optical zoom lens provided in the seventeenth embodiment of this application in the first state.

[0046] Figure 19 B is a schematic diagram of the optical zoom lens provided in the seventeenth embodiment of this application in the second state.

[0047] Figure 20 A is a structural schematic diagram of the optical zoom lens provided in the eighteenth embodiment of this application in the first state.

[0048] Figure 20 B is a schematic diagram of the optical zoom lens provided in the eighteenth embodiment of this application in the second state.

[0049] Figure 21 A is a structural schematic diagram of the optical zoom lens provided in the nineteenth embodiment of this application in the first state.

[0050] Figure 21 B is a schematic diagram of the optical zoom lens provided in the nineteenth embodiment of this application in the second state.

[0051] Figure 22 A is a structural schematic diagram of the optical zoom lens provided in the twentieth embodiment of this application in the first state.

[0052] Figure 22 B is a structural schematic diagram of the optical zoom lens provided in the twentieth embodiment of this application in the second state.

[0053] Figure 23 A is a structural schematic diagram of the optical zoom lens provided in the twenty-first embodiment of this application in the first state.

[0054] Figure 23 B is a schematic diagram of the optical zoom lens provided in the 21st embodiment of this application in the second state.

[0055] Figure 24 A is a schematic diagram of the optical zoom lens provided in the twenty-second embodiment of this application in the first state.

[0056] Figure 24 B is a structural schematic diagram of the optical zoom lens provided in the 22nd embodiment of this application in the second state.

[0057] Figure 25 This is a schematic diagram of the camera module provided in the embodiments of this application.

[0058] Figure 26 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular implementations only and is not intended to limit the application.

[0060] Please see Figure 1 and Figure 2This application provides an optical zoom lens 100. The optical zoom lens 100 includes a first lens group G1 and a second lens group G2. The first lens group G1 has positive refractive power and is movable along the optical path of the optical zoom lens 100. The second lens group G2 has negative refractive power. The optical zoom lens 100 has a first state and a second state. When the optical zoom lens 100 is in the first state, the first lens group G1 is located in a first position, and the second lens group G2 is located outside the optical path of the optical zoom lens 100, and the optical zoom lens 100 images through the first lens group G1. When the optical zoom lens 100 is in the second state, the first lens group G1 is located in a second position, and the second lens group G2 is located within the optical path of the optical zoom lens 100. In this embodiment, the second lens group G2 is located between the first lens group G1 and the imaging plane IMG, and the optical zoom lens 100 images through the first lens group G1 and the second lens group G2. For the first state of the optical zoom lens 100, please refer to [link to documentation]. Figure 1 As shown, for the second state of the optical zoom lens 100, please refer to [link / reference]. Figure 2 As shown. In this embodiment, the optical zoom lens 100 is a telephoto lens in the first state and a super telephoto lens in the second state. It should be understood that this is not a limitation on the embodiments of this application.

[0061] The aforementioned optical zoom lens 100, by having a first state (e.g., standard focal length or telephoto) and a second state (e.g., telephoto or super telephoto), achieves switching between two imaging modes: When the optical zoom lens 100 is in the first state, the first lens group G1 is located in the first position, and the second lens group G2 is located outside the optical path of the optical zoom lens 100. The optical zoom lens 100 images through the first lens group G1, which has positive refractive power. The first lens group G1 with positive refractive power has a light-converging effect, which helps the optical zoom lens 100 obtain higher contrast and lower astigmatism at this focal length. The optical zoom lens 100 provides excellent center and edge image quality, ensuring its imaging quality. In the second state, the first lens group G1 is located in the second position, and the second lens group G2 is located within the optical path of the optical zoom lens 100. The optical zoom lens 100 forms an image through the first lens group G1 with positive refractive power and the second lens group G2 with negative refractive power. The first lens group G1 with positive refractive power initially converges the light, while the second lens group G2 with negative refractive power pushes the intermediate image formed by the first lens group G1 backward, effectively extending the focal length of the optical zoom lens 100, thus achieving an ultra-telephoto imaging effect. By setting the second lens group G2 to have negative refractive power, it helps to balance the aberrations of the optical zoom lens 100 (such as chromatic aberration and field curvature), correcting some of the positive aberrations generated by the first lens group G1, ensuring that the optical zoom lens 100 maintains good imaging quality even at this long or ultra-telephoto focal length. The optical zoom lens 100 of this embodiment achieves a wide range of zoom by moving the first lens group G1 and combining the entry and exit of the second lens group G2. Moreover, through the reasonable configuration of the positive refractive power of the first lens group G1 and the negative refractive power of the second lens group G2 and aberration compensation, stable and high-quality imaging can be obtained throughout the entire focal length range, thus ensuring the imaging quality of the optical zoom lens 100.

[0062] Understandably, in other embodiments, when the optical zoom lens 100 is in the second state, the first lens group G1 is located in the second position, the second lens group G2 is located in the optical path of the optical zoom lens 100, and the second lens group G2 can be located on the object side of the first lens group G1. The optical zoom lens 100 forms an image through the first lens group G1 and the second lens group G2.

[0063] In some embodiments, the optical zoom lens 100 satisfies the following relationship: -0.85 ≤ fg1 / fg2 ≤ -0.06; for example, fg1 / fg2 can be -0.85, -0.84, -0.83, -0.82, -0.81, -0.8, -0.7, -0.6, -0.5, -0.4, -0.3, -0.2, -0.1, -0.09, -0.08, -0.07, -0.06, etc. Here, fg1 is the effective focal length of the first lens group G1, and fg2 is the effective focal length of the second lens group G2. By ensuring the optical zoom lens 100 satisfies the above relationship, and by rationally configuring the ratio of the effective focal length of the first lens group G1 to the effective focal length of the second lens group G2 within a certain range, the second lens group G2 has a larger focal length than the first lens group G1, effectively increasing the focal length of the optical zoom lens 100 and achieving a telephoto extension effect.

[0064] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 96 ≤ 100 × ImgH / (f × Tan(FOV / 2)) ≤ 104; for example, 100 × ImgH / (f × Tan(FOV / 2)) is 96, 96.5, 97, 97.5, 98, 98.5, 99, 99.5, 100, 100.5, 101, 101.5, 102, 102.5, 103, 103.5, 104, etc. Wherein, ImgH is half the image height corresponding to the maximum field of view of the optical zoom lens 100, f is the effective focal length of the optical zoom lens 100, and FOV is the maximum field of view of the optical zoom lens 100. It can be understood that the effective focal length f of the optical zoom lens 100 includes its effective focal length in the first state and the second state, and the maximum field of view FOV of the optical zoom lens 100 includes its maximum field of view in the first state and the second state. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the relationship between image height, focal length and field of view, the optical zoom lens 100 is less likely to be affected by distortion when switching focal lengths, thus ensuring the imaging quality of the optical zoom lens 100.

[0065] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.8 ≤ Rg1-1 / Rg1-n ≤ 1.8; for example, Rg1-1 / Rg1-n can be 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, 1.8, etc. Wherein, Rg1-1 is the radius of curvature of the incident surface of the first lens group G1 at the optical axis O, and Rg1-n is the radius of curvature of the emitting surface of the first lens group G1 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the radius of curvature of the light-incident surface of the first lens group G1 to the radius of curvature of the light-outceasing surface of the first lens group G1 within a certain range, it is possible to promote the smoothness of light deflection, maintain the symmetry of the optical zoom lens 100, and thereby improve the error resistance and imaging quality of the optical zoom lens 100.

[0066] In some embodiments, the optical zoom lens 100 satisfies the following relationship: -0.6 ≤ Rg1-n / Rg2-1 ≤ -0.1; for example, Rg1-n / Rg2-1 can be -0.6, -0.55, -0.5, -0.45, -0.4, -0.35, -0.3, -0.25, -0.2, -0.15, -0.1, etc. Wherein, Rg1-n is the radius of curvature of the light-emitting surface of the first lens group G1 at the optical axis O, and Rg2-1 is the radius of curvature of the light-incident surface of the second lens group G2 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the radius of curvature of the light-emitting surface of the first lens group G1 to the radius of curvature of the light-incident surface of the second lens group G2 within a certain range, the second lens group G2 can effectively receive the light from the first lens group G1, resulting in a smaller angle of incidence of light entering the second lens group G2. This helps to reduce light energy loss, lower light sensitivity, and improve the imaging quality of the optical zoom lens 100.

[0067] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 20mm ≤ fs ≤ 26mm; for example, fs is 20mm, 20.5mm, 21mm, 21.5mm, 22mm, 22.5mm, 23mm, 23.5mm, 24mm, 24.5mm, 25mm, 25.5mm, 26mm, etc. Here, fs is the effective focal length of the optical zoom lens 100 in the first state. By making the optical zoom lens 100 satisfy the above relationship, the effective focal length of the optical zoom lens 100 in the first state is constrained within the standard telephoto range of 20mm to 26mm. This allows the optical zoom lens 100 to possess the expected telephoto angle and spatial compression imaging characteristics in the first state, producing a slight sense of spatial compression, making the elements in the image appear more compact than they actually are, which is very suitable for shooting half-body portraits.

[0068] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 37mm ≤ f-1 ≤ 40mm; for example, f-1 is 37 mm, 37.5 mm, 38 mm, 38.5 mm, 39 mm, 39.5 mm, 40 mm, etc. Here, f-1 is the effective focal length of the optical zoom lens 100 in the second state. By making the optical zoom lens 100 satisfy the above relationship, the effective focal length of the optical zoom lens 100 in the second state is constrained within the ultra-telephoto range of 37mm to 40mm. This allows the optical zoom lens 100 to achieve the expected angle compression and detail resolution in telephoto mode, producing a stronger sense of spatial compression, significantly reducing the perceived distance between the foreground and background, making the image appear flatter, simplifying the background, and highlighting the subject.

[0069] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 1.5 ≤ f-1 / fs ≤ 2.0; for example, f-1 / fs can be 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95, 2, etc. Wherein, fs is the effective focal length of the optical zoom lens 100 in the first state, and f-1 is the effective focal length of the optical zoom lens 100 in the second state. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the effective focal length of the optical zoom lens 100 in the second state to that in the first state is reasonably configured within a certain range, so that the optical zoom lens 100 can meet the switching magnification of 1.5x to 2x focal length. In addition, it is beneficial to optimize the optical total length, image plane stability and aberration correction capability of the optical zoom lens 100 during the design phase, which is conducive to achieving a balance between high image quality and large zoom ratio, and improving the uniformity and reliability of the imaging quality of the optical zoom lens 100 across the entire focal length.

[0070] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 12° ≤ (FOV-s) / 2 ≤ 18°; for example, (FOV-s) / 2 is 12°, 12.5°, 13°, 13.5°, 14°, 14.5°, 15°, 15.5°, 16°, 16.5°, 17°, 17.5°, 18°, etc. Wherein, FOV-s is the maximum field of view of the optical zoom lens 100 in the first state. By ensuring that the optical zoom lens 100 satisfies the above relationship, and by reasonably configuring the maximum field of view of the optical zoom lens 100 in the first state within a certain range, it is beneficial to bring excellent spatial compression, significant background blur, and outstanding subject expression to the optical zoom lens 100.

[0071] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 8° ≤ (FOV-1) / 2 ≤ 9.5°; for example, (FOV-1) / 2 is 8°, 8.1°, 8.2°, 8.3°, 8.4°, 8.5°, 8.6°, 8.7°, 8.8°, 8.9°, 9°, 9.1°, 9.2°, 9.3°, 9.4°, 9.5°, etc. Wherein, FOV-1 is the maximum field of view of the optical zoom lens 100 in the second state. By ensuring that the optical zoom lens 100 satisfies the above relationship, and by reasonably configuring the maximum field of view of the optical zoom lens 100 in the second state within a certain range, the image perspective can be focused, the subject can be highlighted, and a moderate background blur can be achieved.

[0072] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.5 ≤ FOV-1 / FOV-s ≤ 0.7; for example, FOV-1 / FOV-s can be 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, etc. Wherein, FOV-s is the maximum field of view of the optical zoom lens 100 in the first state, and FOV-1 is the maximum field of view of the optical zoom lens 100 in the second state. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the maximum field of view of the optical zoom lens 100 in the second state to that in the first state is reasonably configured within a certain range. This ensures that when the optical zoom lens 100 switches focal lengths, the narrowing ratio of its maximum field of view is constrained to 0.5 to 0.7 times. This allows the compositional field of view of the optical zoom lens 100 in the telephoto state to be determined and as expected, which is beneficial for capturing details of distant objects while maintaining a reasonable framing range. This improves the compositional controllability and practicality of the optical zoom lens 100 in different shooting scenarios.

[0073] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 2.5 ≤ FNO-s ≤ 4.1; for example, FNO-s can be 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.1, etc. Wherein, FNO-s is the aperture number of the optical zoom lens 100 in the first state. By ensuring the optical zoom lens 100 satisfies the above relationship, and by reasonably configuring the aperture number of the optical zoom lens 100 in the first state within a certain range, the optical zoom lens 100 exhibits more pronounced background blur (shallow depth of field); in environments with average lighting conditions, it can improve image quality and reduce noise; while providing good blur and light intake, it maintains good image sharpness.

[0074] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 4.0 ≤ FNO-1 ≤ 5.7; for example, FNO-1 can be 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, etc. Wherein, FNO-s is the aperture number of the optical zoom lens 100 in the second state. By ensuring that the optical zoom lens 100 satisfies the above relationship, and by reasonably configuring the aperture number of the optical zoom lens 100 in the second state within a certain range, it is beneficial to improve the image sharpness of the optical zoom lens 100, reduce aberrations (such as spherical aberration and coma), and help improve the image quality at the edges and the overall relative illumination.

[0075] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 1.35 ≤ FNO-1 / FNO-s ≤ 1.65; for example, FNO-1 / FNO-s can be 1.35, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, etc. Wherein, FNO-s is the aperture number of the optical zoom lens 100 in the first state, and FNO-1 is the aperture number of the optical zoom lens 100 in the second state. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the aperture number of the optical zoom lens 100 in the second state to that in the first state is reasonably configured within a certain range. This ensures that when the optical zoom lens 100 switches from the first state to the second state, the rate of change of its aperture number is constrained to between 1.35 and 1.65 times. This allows the optical zoom lens 100 to maintain relatively bright light transmission capability even when the focal length increases to enter the super telephoto state. It is beneficial to control the attenuation of the amount of light entering the lens and suppress the intensification of diffraction effects, thereby improving the image brightness and image sharpness of the optical zoom lens 100 at the telephoto end.

[0076] In some embodiments, the first lens group G1 is a zoom lens group, and the optical zoom lens 100 satisfies the following relationship: 0.98 ≤ fg1-1 / fg1-s ≤ 1.15; for example, fg1-1 / fg1-s can be 0.98, 0.99, 1, 1.01, 1.02, 1.03, 1.04, 1.05, 1.06, 1.07, 1.08, 1.09, 1.1, 1.11, 1.12, 1.13, 1.14, 1.15, etc. Wherein, fg1-s is the effective focal length of the first lens group G1 in the first state, and fg1-1 is the effective focal length of the first lens group G1 in the second state. By ensuring that the optical zoom lens 100 satisfies the aforementioned relationship, and by rationally configuring the ratio of the effective focal length of the first lens group G1 in the first state and the second state within a certain range, the variation range of the total focal length of the first lens group G1 caused by internal focusing is minimized. This is beneficial for improving the focusing speed of the first lens group G1 and enabling it to focus within a smaller focal length range, allowing for more accurate aberration correction and better distortion control. Furthermore, by defining the first lens group G1 as a zoom lens group, the zoom range of the optical zoom lens 100 is further enhanced.

[0077] In some embodiments, the optical zoom lens 100 further includes a first steering element PR1, which is disposed on the object side of the first lens group G1 and located within the optical path of the optical zoom lens 100. When the first lens group G1 moves along the optical path of the optical zoom lens 100, the distance between the first steering element PR1 and the first lens group G1 changes accordingly, effectively altering the focal length of the optical zoom lens 100 and shortening its overall length. The first steering element PR1 can be a curved prism. Understandably, the first steering element PR1 can also be other steering elements.

[0078] In some embodiments, the first steering element PR1 has a negative refractive force, and the first steering element PR1 deflects the light by 90°. The first steering element PR1 has an incident surface PR1-1 and an exit surface PR1-2. By reasonably configuring the refractive force of the first steering element PR1 and the light deflection angle, the incident light is moderately diverged and deflected by 90° before entering the first lens group G1, so that the total optical length of the optical zoom lens 100 can be arranged laterally in physical space, effectively shortening the longitudinal dimension of the optical zoom lens 100. At the same time, the forward negative refractive force helps to compensate for some of the aberrations generated by the subsequent positive refractive force of the first lens group G1, which is conducive to realizing the compactness of the overall structure of the optical zoom lens 100 and improving off-axis aberrations, thereby improving the integration and edge image quality of the optical zoom lens 100 in miniaturized devices.

[0079] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 7mm ≤ ATP1s - ATP1l ≤ 9.5mm; for example, ATP1s - ATP1l can be 7, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, 9, 9.1, 9.2, 9.3, 9.4, 9.5, etc. Wherein, ATP1s is the distance on the optical axis O between the light-incident surface of the first lens group G1 and the image-side surface of the first steering element PR1 in the first state, and ATP1l is the distance on the optical axis O between the light-incident surface of the first lens group G1 and the image-side surface of the first steering element PR1 in the second state. By making the optical zoom lens 100 satisfy the above relationship, it is beneficial to control the air gap at the front end of the first lens group G1, so that the optical zoom lens 100 has enough space to switch focal lengths.

[0080] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 45mm ≤ TTL ≤ 52mm; for example, TTL is 45mm, 45.5mm, 46mm, 46.5mm, 47mm, 47.5mm, 48mm, 48.5mm, 49mm, 49.5mm, 50mm, 50.5mm, 51mm, 51.5mm, 52mm, etc. Wherein, TTL is the distance on the optical axis O from the object-side surface (i.e., the incident surface PR1-1) of the first steering element PR1 to the imaging surface IMG of the optical zoom lens 100. By making the optical zoom lens 100 satisfy the above relationship, the entire optical zoom lens 100 can maintain an extremely compact size while accommodating a 90° light redirection and a dual-lens zoom structure. This facilitates the integration of the super-telephoto optical zoom lens 100 into miniaturized devices with strict thickness limitations, improving the space utilization efficiency and product application breadth of the optical zoom lens 100.

[0081] In some embodiments, please refer to the following: Figure 3 A and Figure 3As shown in Figure B, the first lens group G1 consists of four refractive lenses, arranged sequentially from the object side to the image side along the optical axis O: lens L1, lens L2, lens L3, and lens L4. Lens L1 has negative refractive power. The object-side surface S1 of lens L1 is convex near the optical axis O, as is the image-side surface S2. The object-side surface S7 of lens L4 is convex near the optical axis O, and the image-side surface S8 of lens L4 is concave near the optical axis O. It can be understood that the object-side surface S1 of lens L1 is the incident light surface of the first lens group G1, and the image-side surface S8 of lens L4 is the exit light surface of the first lens group G1. The first lens group G1 has a negative refractive power. Its object-side surface S1 and image-side surface S2 are both convex near the optical axis O. This "meniscus negative lens" structure is located at the front end of the first lens group G1, which is beneficial for receiving and initially diverging large-angle light rays from the front (or large-angle light rays from the front first steering element PR1), reserving space for subsequent positive lens group to correct aberrations. The object-side surface S7 and image-side surface S8 of the fourth lens L4 are convex and concave near the optical axis O, respectively. This "convex-concave lens" structure is located at the end of the first lens group G1, which is beneficial for effectively controlling the field curvature of the image plane and balancing the Petzval sum of the first lens group G1 while completing the convergence of light rays, thereby improving the imaging flatness of the edge field of view while achieving a long focal length. When the first lens group G1 is a variable focal length lens group, the distance between the second lens L2 and the third lens L3 is variable, the first lens L1 and the second lens L2 can move synchronously, and / or the third lens L3 and the fourth lens L4 can move; or, the distance between the first lens L1 and the second lens L2 is variable; or, the distance between the third lens L3 and the fourth lens L4 is variable. This application embodiment does not specifically limit this. Furthermore, the first lens group G1 may include more or fewer lenses, and the first lens group G1 may also be a fixed focal length lens group. This application embodiment does not specifically limit this.

[0082] In some embodiments, please refer to the following: Figure 3 A and Figure 3As shown in Figure B, the second lens group G2 consists of four refractive lenses, arranged sequentially from the object side to the image side along the optical axis O: a fifth lens L5, a sixth lens L6, a seventh lens L7, and an eighth lens L8. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O. Understandably, the object-side surface S9 of the fifth lens L5 is the incident light surface of the second lens group G2. In the aforementioned second lens group G2, the object-side surface S9 of the fifth lens L5 is concave near the optical axis O. The fifth lens L5 is located at the very front of the second lens group G2, which facilitates the direct reception and further divergence of converging light rays from the first lens group G1, providing the initial refractive force for the second lens group G2 to achieve focal length extension. The object-side surface S9 of the fifth lens L5 effectively reduces the angle of incidence of light, lowering aberration sensitivity. Furthermore, the second lens group G2 may include more or fewer lenses; this embodiment does not specifically limit this.

[0083] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.2 ≤ f1 / f ≤ 0.5; for example, f1 / f can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, etc. Here, f is the effective focal length of the optical zoom lens 100, and f1 is the effective focal length of the first lens L1. By ensuring the optical zoom lens 100 satisfies the above relationship, and by rationally configuring the ratio of the first lens L1 to the effective focal length of the optical zoom lens 100 within a certain range, the first lens L1 contributes the most to the refractive power in the optical zoom lens 100. The first lens L1 can quickly converge light, reducing the size of subsequent lens groups, which is beneficial for achieving a miniaturized design of the optical zoom lens 100.

[0084] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.2 ≤ |f2 / f| ≤ 10; for example, |f2 / f| can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, etc. Where f is the effective focal length of the optical zoom lens 100, and f2 is the effective focal length of the second lens L2. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the second lens L2 to the effective focal length of the optical zoom lens 100 within a certain range, the second lens L2 plays a moderate role in light control within the optical zoom lens 100. Its refractive power is neither too strong, which would lead to a sharp increase in aberrations, nor too weak, which would result in a loss of effective control over the optical path. This is beneficial for the second lens L2, the first lens L1, and the third lens L3 to work together to correct astigmatism and coma, thereby improving the imaging clarity of the optical zoom lens 100 in the off-axis field of view.

[0085] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.35 ≤ |f3 / f| ≤ 3.5; for example, |f3 / f| is 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.5, 2, 2.5, 3, 3.5, etc. Wherein, f is the effective focal length of the optical zoom lens 100, and f3 is the effective focal length of the third lens L3. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the third lens L3 to the effective focal length of the optical zoom lens 100 within a certain range, the third lens L3 plays a key and appropriate role in compensating for the positive spherical aberration and positive field curvature generated by the front lens. Its refractive power is constrained to a range that can effectively correct aberrations without introducing too many advanced image distortions. This is beneficial for improving the overall image plane flatness and resolution of the optical zoom lens 100 while maintaining the aberration balance and structural stability of the optical zoom lens 100.

[0086] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.5 ≤ |f4 / f| ≤ 13.5; for example, |f4 / f| is 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, etc. Where f is the effective focal length of the optical zoom lens 100, and f4 is the effective focal length of the fourth lens L4. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the fourth lens L4 to the effective focal length of the optical zoom lens 100 within a certain range, the fourth lens L4, as the last lens in the first lens group G1, can play a major role in converging light and correcting aberrations. Its refractive power is controlled to provide sufficient refractive power to shorten the total optical length of the optical zoom lens 100, while avoiding high-order aberrations caused by excessive refractive power. This is beneficial to achieving a balance between miniaturization and high performance of the entire optical zoom lens 100 while ensuring the imaging sharpness and field curvature control capability of the optical zoom lens 100.

[0087] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.4 ≤ |f5 / f| ≤ 21; for example, |f5 / f| can be 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, etc. Wherein, f is the effective focal length of the optical zoom lens 100, and f5 is the effective focal length of the fifth lens L5. By ensuring that the optical zoom lens 100 satisfies the above relationship, the ratio of the effective focal length of the fifth lens L5 to that of the optical zoom lens 100 is reasonably configured within a certain range. As the first lens of the second lens group G2, the fifth lens L5 has sufficient and controllable adjustment capabilities when undertaking the initial divergence function of light. Its refractive power range ensures that the second lens group G2 can effectively extend the focal length, while avoiding the rapid deterioration of system field curvature and distortion due to excessive refractive power. This is beneficial to maintaining the aberration balance and imaging quality of the second lens group G2 and even the entire optical zoom lens 100 at the telephoto end while achieving a large zoom ratio.

[0088] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.15 ≤ |f6 / f| ≤ 3.0; for example, |f6 / f| is 0.15, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, etc., where f is the effective focal length of the optical zoom lens 100, and f6 is the effective focal length of the sixth lens L6. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the effective focal length of the sixth lens L6 to that of the optical zoom lens 100 within a certain range, the sixth lens L6 can undertake the key secondary aberration correction and light shaping functions in the second lens group G2. Its refractive power is constrained within a range that can effectively cooperate with the divergence function of the fifth lens L5 and precisely control the subsequent optical path. This is beneficial for correcting the residual aberrations generated or transmitted by the fifth lens L5, especially field curvature and magnification chromatic aberration, thereby improving the overall aberration correction level and imaging consistency of the optical zoom lens 100 in the telephoto state.

[0089] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.2 ≤ |f7 / f| ≤ 3.0; for example, |f7 / f| is 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, etc. Where f is the effective focal length of the optical zoom lens 100, and f7 is the effective focal length of the seventh lens L7. By ensuring that the optical zoom lens 100 satisfies the above relationship, and by rationally configuring the ratio of the effective focal length of the seventh lens L7 to that of the optical zoom lens 100 within a certain range, the seventh lens L7 plays a crucial role in aberration fine-tuning and optical path stabilization in the second lens group G2. Its refractive power range ensures that the lens can finely compensate for the residual aberrations (especially spherical aberration and astigmatism) after correction by the previous lens without dominating the overall refractive power of the system. This is beneficial for further improving the flatness of the image plane and the sharpness of the edge image quality, and enhancing the imaging stability and environmental adaptability of the optical zoom lens 100 at the super telephoto end.

[0090] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.45 ≤ |f8 / f| ≤ 35; for example, |f8 / f| is 0.45, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, etc. Wherein, f is the effective focal length of the optical zoom lens 100, and f8 is the effective focal length of the eighth lens L8. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the eighth lens L8 to the effective focal length of the optical zoom lens 100 within a certain range, the eighth lens L8, as the last lens of the second lens group G2, can effectively play the key role of converging light rays and determining the final image plane position. Its wide range of refractive power provides sufficient design freedom to balance the aberrations of the second lens group G2 and precisely control the exit angle of the principal ray, which is conducive to ensuring the sharpness and illumination uniformity of the final image. At the same time, it enables the second lens group G2 to be well matched with the first lens group G1, and together achieve high-performance imaging of the optical zoom lens 100 at the ultra-telephoto end.

[0091] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.15 ≤ R1 / f ≤ 0.36; for example, R1 / f is 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, etc. Where f is the effective focal length of the optical zoom lens 100, and R1 is the radius of curvature of the object-side surface S1 of the first lens L1 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the radius of curvature of the object side surface S1 of the first lens L1 to the effective focal length of the optical zoom lens 100 is reasonably configured within a certain range. This allows the curvature of the object side surface S1 of the first lens L1 to be precisely constrained. This convex structure can provide a smooth transition when receiving large-angle light from the front, reducing the incident angle of light and lowering aberration sensitivity. This is beneficial for expanding the field of view of the optical zoom lens 100 while effectively controlling the negative spherical aberration and negative coma generated by the first lens L1, laying a good foundation for aberration correction of subsequent lens groups.

[0092] In some embodiments, the optical zoom lens 100 satisfies the following relationship: -1 ≤ R2 / f ≤ -0.25; for example, R2 / f can be -1, -0.95, -0.9, -0.85, -0.8, -0.75, -0.7, -0.65, -0.6, -0.55, -0.5, -0.45, -0.4, -0.35, -0.3, -0.25, etc. Where f is the effective focal length of the optical zoom lens 100, and R2 is the radius of curvature of the image-side surface S2 of the second lens L2 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, and by rationally configuring the ratio of the radius of curvature of the image-side surface S2 of the first lens L1 to the effective focal length of the optical zoom lens 100 within a certain range, the image-side surface S2 of the first lens L1 exhibits a moderately concave characteristic. This structure can cooperate with the object-side surface S1 of the first lens L1 to form an effective meniscus negative lens, producing specific divergence and refraction effects on light. This is beneficial for initially expanding the field of view and then beginning to converge the edge light rays inward, thereby initially correcting the astigmatism caused by the large-angle incident light rays from the object side, and reducing the aberration correction burden of the subsequent positive lens group.

[0093] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.1 ≤ R7 / f ≤ 0.65; for example, R7 / f can be 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, etc. Where f is the effective focal length of the optical zoom lens 100, and R7 is the radius of curvature of the object-side surface S7 of the fourth lens L4 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the radius of curvature of the object side surface S7 of the fourth lens L4 to the effective focal length of the optical zoom lens 100 is reasonably configured within a certain range. This allows the curvature of the object side surface S7 of the fourth lens L4 to be controlled within a moderate range, ensuring that the fourth lens L4 can effectively converge light from the front lens and enhance its refractive power contribution. At the same time, it avoids introducing higher-order spherical aberrations or increasing sensitivity due to excessive surface curvature. This is beneficial for maintaining good aberration balance and manufacturing tolerances while shortening the rear focal length of the optical zoom lens 100.

[0094] In some embodiments, the optical zoom lens 100 satisfies the following relationship: 0.1 ≤ R8 / f ≤ 0.35; for example, R8 / f can be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.2, 1.4, 1.6, 1.8, 2, 2.1, 2.3, 2.5, 2.7, 2.9, 3, 3.1, 3.2, 3.3, 3.4, 3.5, etc. Where f is the effective focal length of the optical zoom lens 100, and R8 is the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the radius of curvature of the image side surface S8 of the fourth lens L4 to the effective focal length of the optical zoom lens 100 is reasonably configured within a certain range, so that the curvature of the image side surface S8 of the fourth lens L4 is precisely limited. This structure, together with the object side surface S7 of the fourth lens L4, forms a convex-concave lens, which can effectively control the deflection angle of the principal ray and smooth the field curvature of the image plane. This is beneficial to ensure that the fourth lens L4 provides sufficient converging ability while accurately controlling the image plane position and the focusing state of the edge image points, thereby improving the overall flatness of the imaging surface IMG of the optical zoom lens 100.

[0095] In some embodiments, the optical zoom lens 100 satisfies the following relationship: -1 ≤ R9 / f ≤ -0.3; for example, R9 / f can be -1, -0.95, -0.9, -0.85, -0.8, -0.75, -0.7, -0.65, -0.6, -0.55, -0.5, -0.45, -0.4, -0.35, -0.3, etc. Where f is the effective focal length of the optical zoom lens 100, and R9 is the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis O. By ensuring that the optical zoom lens 100 satisfies the above-mentioned relationship, the ratio of the radius of curvature of the object surface S9 of the fifth lens L5 to the effective focal length of the optical zoom lens 100 is reasonably configured within a certain range. This allows the object surface S9 of the fifth lens L5 to have sufficient curvature to effectively diverge the converging light rays from the first lens group G1, providing a key surface morphology for the second lens group G2 to achieve negative refractive power. At the same time, it avoids excessive curvature that would cause severe light deflection and increased astigmatism. This facilitates smooth control of the optical path when the focal length extension function is activated, creating favorable conditions for subsequent lens aberration correction.

[0096] In some embodiments, the optical zoom lens 100 further includes a second steering element PR2, which has an incident surface PR2-1 and an exit surface PR2-2. When the optical zoom lens 100 is in a first state, the second steering element PR2 is located on the image side of the first lens group G1 and within the optical path of the optical zoom lens 100. When the optical zoom lens 100 is in a second state, the second steering element PR2 is located on the image side of the second lens group G2 and within the optical path of the optical zoom lens 100. By providing the second steering element PR2, it is helpful to further shorten the longitudinal dimension of the optical zoom lens 100, thereby enabling the optical zoom lens 100 to be miniaturized.

[0097] In some embodiments, the optical zoom lens 100 further includes an aperture stop STO, which may be an aperture stop and / or a field stop. For example, the aperture stop STO may be an aperture stop, or a field stop, or both an aperture stop and a field stop. In some embodiments, the aperture stop STO is disposed between the first steering element PR1 and the first lens group G1, which is beneficial for the rational distribution of the refractive power of the optical zoom lens 100. It is understood that in other embodiments, the aperture stop STO may also be disposed between other lenses, and the specific setting may be adjusted according to the actual situation. This embodiment does not specifically limit this.

[0098] In some embodiments, the optical zoom lens 100 further includes an infrared filter IR, which is disposed between the second lens group G2 and the imaging plane IMG of the optical zoom lens 100. Optionally, the infrared filter IR may be an infrared cut-off filter to filter out infrared light and allow visible light to pass through, making the image more consistent with the visual experience of the human eye, thereby improving image quality. In other embodiments, the infrared filter IR may be an infrared bandpass filter, which can filter out light of other wavelengths such as visible light, allowing infrared light to pass through and reflecting visible light to achieve infrared imaging of the optical zoom lens 100, enabling the optical zoom lens 100 to image in low-light environments or special application scenarios and obtain better image quality. It is understood that the infrared filter IR may be made of plastic, optical glass with coating, or other materials, and can be selected according to actual needs. This embodiment does not impose specific limitations.

[0099] In some embodiments, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, and eighth lens L8 can all be made of glass, thereby enabling the optical zoom lens 100 to achieve good image quality while reducing the impact of temperature on the lenses. Furthermore, it is understood that the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, and eighth lens L8 can all be made of plastic to reduce the overall weight of the optical zoom lens 100. Of course, among the multiple lenses of the optical zoom lens 100, some lenses can be made of glass, and some can be made of plastic, thereby ensuring that while reducing the impact of temperature on the lenses to achieve good image quality, it also reduces the manufacturing cost and weight of the lenses, thus reducing the manufacturing cost and overall weight of the optical zoom lens 100.

[0100] In some embodiments, spherical lenses are considered to have the advantages of simple manufacturing process and low production cost, and the ability to flexibly design the lens surface shape to improve the imaging resolution of the optical zoom lens 100. Aspherical lenses allow for more flexible design of the object side or image side of the lens, enabling the lens to effectively solve problems such as unclear imaging, distorted field of view, or narrow field of view even when the lens is small and thin. Furthermore, the optical zoom lens 100 does not need to have too many lenses to achieve good image quality, which is beneficial for shortening the length of the optical zoom lens 100. Based on this, the first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, and eighth lens L8 can be selected as aspherical lenses. This aspherical design not only improves the lens's manufacturability and facilitates surface design, but also allows for more flexible design of the object-side or image-side of the lens. This enables each lens to effectively solve problems such as unclear imaging, distorted field of view, or narrow field of view even with smaller and thinner dimensions. Furthermore, the optical zoom lens 100 can achieve good image quality and high resolution without requiring too many lenses, while also shortening the length of the optical zoom lens 100. It is understood that in other embodiments, the surfaces of each lens in the optical zoom lens 100 can be all spherical, all aspherical, or any combination of spherical and aspherical surfaces, depending on actual needs. Therefore, this embodiment does not impose specific limitations. In addition, in some embodiments, the incident surface PR1-1 and the exit surface PR1-2 of the first steering element PR1 can also be aspherical.

[0101] The surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formulas: ; Where Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, c is the curvature of the vertex of the aspherical surface, c = 1 / Y, Y is the radius of curvature (i.e., the paraxial curvature c is the reciprocal of the radius of Y in Table 1), r is the distance from any point on the aspherical surface to the optical axis O, k is the conic constant, and Ai is the coefficient corresponding to the i-th higher-order term in the aspherical surface shape formula.

[0102] The optical zoom lens 100 of this embodiment will be described in detail below with reference to specific parameters.

[0103] First Embodiment A schematic diagram of the optical zoom lens 100 in the first state provided in the first embodiment of this application is shown below. Figure 3As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object surface S1 of the first lens L1 is convex near the optical axis O, and the image surface S2 of the first lens L1 is convex near the optical axis O; the object surface S3 of the second lens L2 is convex near the optical axis O, and the image surface S4 of the second lens L2 is concave near the optical axis O; the object surface S5 of the third lens L3 is concave near the optical axis O, and the image surface S6 of the third lens L3 is convex near the optical axis O; the object surface S7 of the fourth lens L4 is convex near the optical axis O, and the image surface S8 of the fourth lens L4 is concave near the optical axis O.

[0104] A schematic diagram of the optical zoom lens 100 in the second state provided in the first embodiment of this application is shown below. Figure 3 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O.

[0105] Specifically, the parameters of the optical zoom lens 100 in the first state are given in Table 1 below, and the parameters of the optical zoom lens 100 in the second state are given in Table 2 below. The elements along the optical axis O of the optical zoom lens 100 from the object side to the image side are arranged sequentially according to the order of the elements in Tables 1 and 2 from top to bottom. For example, surface numbers 1 and 2 correspond to the incident surface PR1-1 and the exit surface PR1-2 of the first steering element PR1, respectively. In the same lens, the surface with the smaller surface number is the object side of the lens, and the surface with the larger surface number is the image side of the lens. For example, surface numbers 4 and 5 correspond to the object side S1 and the image side S2 of the first lens L1, respectively. It should be noted that the same surface numbers in Tables 1 and 2 do not necessarily refer to the same element. For example, in Table 1, surface numbers 12 and 13 correspond to the incident surface PR2-1 and the exit surface PR2-2 of the second steering element PR2, respectively. In Table 2, surface numbers 12 and 13 correspond to the object surface S9 and the image surface S10 of the fifth lens L5, respectively, and surface numbers 20 and 21 correspond to the incident surface PR2-1 and the exit surface PR2-2 of the second steering element PR2, respectively. The Y-radius in Tables 1 and 2 is the radius of curvature of the object surface or image surface of the corresponding surface number at the optical axis O. The first value in the "thickness" parameter column of the lens is the thickness of the lens on the optical axis O, and the second value is the distance from the image surface of the lens to the next surface on the optical axis O. The value of the stop STO in the "Thickness" parameter column represents the distance from the stop STO to the vertex of the next surface (the vertex refers to the intersection of the surface and the optical axis O) on the optical axis O. By default, the direction from the object side S1 of the first lens L1 to the image side of the last lens is the positive direction of the optical axis O. When this value is negative, it indicates that the stop STO is set on the image side of the next surface vertex. If the thickness of the stop STO is positive, the stop STO is on the object side of the next surface vertex. It can be understood that the units of Y radius, thickness, and focal length in Tables 1 and 2 are all mm. Furthermore, the refractive index, Abbe number, focal length, etc., in Tables 1 and 2 are all obtained at a reference wavelength of 555.0000 nm.

[0106] In the first embodiment, the incident surface PR1-1 and the exit surface PR1-2 of the first steering element PR1, and the object-side and image-side surfaces of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7 and the eighth lens L8 are all aspherical surfaces. Table 3 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for the aspherical mirrors in the first embodiment. The surface numbers in Table 3 refer to the surface numbers in Table 2.

[0107] Table 1 Table 2 Table 3 Second Embodiment The second embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 4 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the second embodiment in the first state are given in Table 4 below.

[0108] The second embodiment of this application discloses a structural schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 4As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the second embodiment in the second state are given in Table 5 below.

[0109] Table 6 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the second embodiment.

[0110] Table 4 Table 5 Table 6 Third Embodiment The third embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 5As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the third embodiment in the first state are given in Table 7 below.

[0111] The third embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 5 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the third embodiment in the second state are given in Table 8 below.

[0112] Table 9 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the third embodiment.

[0113] Table 7 Table 8 Table 9 Fourth embodiment The fourth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 6 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the fourth embodiment in the first state are given in Table 10 below.

[0114] The fourth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 6As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the fourth embodiment in the second state are given in Table 11 below.

[0115] Table 12 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the fourth embodiment.

[0116] Table 10 Table 11 Table 12 Fifth embodiment The fifth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 7As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the fifth embodiment in the first state are given in Table 13 below.

[0117] The fifth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 7 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is convex near the optical axis O. Other parameters of the optical zoom lens 100 of the fifth embodiment in the second state are given in Table 14 below.

[0118] Table 15 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the fifth embodiment.

[0119] Table 13 Table 14 Table 15 Sixth Embodiment The sixth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 8 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is concave near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is concave near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the sixth embodiment in the first state are given in Table 16 below.

[0120] The sixth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 8As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is convex near the optical axis O. Other parameters of the optical zoom lens 100 of the sixth embodiment in the second state are given in Table 17 below.

[0121] Table 18 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the sixth embodiment.

[0122] Table 16 Table 17 Table 18 Seventh Embodiment The seventh embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 9As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the seventh embodiment in the first state are given in Table 19 below.

[0123] The seventh embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 9 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is convex near the optical axis O. Other parameters of the optical zoom lens 100 of the seventh embodiment in the second state are given in Table 20 below.

[0124] Table 21 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the seventh embodiment.

[0125] Table 19 Table 20 Table 21 Eighth embodiment The eighth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 10 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the eighth embodiment in the first state are given in Table 22 below.

[0126] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the eighth embodiment of this application is shown below. Figure 10As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the eighth embodiment in the second state are given in Table 23 below.

[0127] Table 24 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the eighth embodiment.

[0128] Table 22 Table 23 Table 24 Ninth Embodiment The ninth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 11As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the ninth embodiment in the first state are given in Table 25 below.

[0129] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the ninth embodiment of this application is shown below. Figure 11 As shown in B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the ninth embodiment in the second state are given in Table 26 below.

[0130] Table 27 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the ninth embodiment.

[0131] Table 25 Table 26 Table 27 Tenth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the tenth embodiment of this application is shown below. Figure 12 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the tenth embodiment in the first state are given in Table 28 below.

[0132] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the tenth embodiment of this application is shown below. Figure 12As shown in B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the tenth embodiment in the second state are given in Table 29 below.

[0133] Table 30 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the tenth embodiment.

[0134] Table 28 Table 29 Table 30 Eleventh Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the eleventh embodiment of this application is shown below. Figure 13As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the eleventh embodiment in the first state are given in Table 31 below.

[0135] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the eleventh embodiment of this application is shown below. Figure 13 As shown in B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is concave near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the eleventh embodiment in the second state are given in Table 32 below.

[0136] Table 33 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the eleventh embodiment.

[0137] Table 31 Table 32 Table 33 Twelfth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the twelfth embodiment of this application is shown below. Figure 14 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twelfth embodiment in the first state are given in Table 34 below.

[0138] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the twelfth embodiment of this application is shown below. Figure 14As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has positive refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is concave near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twelfth embodiment in the second state are given in Table 35 below.

[0139] Table 36 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the twelfth embodiment.

[0140] Table 34 Table 35 Table 36 Thirteenth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the thirteenth embodiment of this application is shown below. Figure 15As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the thirteenth embodiment in the first state are given in Table 37 below.

[0141] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the thirteenth embodiment of this application is shown below. Figure 15 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has positive refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is concave near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is concave near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the thirteenth embodiment in the second state are given in Table 38 below.

[0142] Table 39 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the thirteenth embodiment.

[0143] Table 37 Table 38 Table 39 Fourteenth Embodiment The fourteenth embodiment of this application discloses a structural schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 16 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has positive refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the fourteenth embodiment in the first state are given in Table 40 below.

[0144] The fourteenth embodiment of this application discloses a structural schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 16As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is convex near the optical axis O. Other parameters of the optical zoom lens 100 of the fourteenth embodiment in the second state are given in Table 41 below.

[0145] Table 42 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the fourteenth embodiment.

[0146] Table 40 Table 41 Table 42 Fifteenth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the fifteenth embodiment of this application is shown below. Figure 17As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has positive refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the fifteenth embodiment in the first state are given in Table 43 below.

[0147] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the fifteenth embodiment of this application is shown below. Figure 17 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the fifteenth embodiment in the second state are given in Table 44 below.

[0148] Table 45 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the fifteenth embodiment.

[0149] Table 43 Table 44 Table 45 Sixteenth Embodiment The sixteenth embodiment of this application discloses a structural schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 18 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has positive refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is convex near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the sixteenth embodiment in the first state are given in Table 46 below.

[0150] The sixteenth embodiment of this application discloses a structural schematic diagram of the optical zoom lens 100 in the second state as shown below. Figure 18As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the sixteenth embodiment in the second state are given in Table 47 below.

[0151] Table 48 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the sixteenth embodiment.

[0152] Table 46 Table 47 Table 48 Seventeenth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the seventeenth embodiment of this application is shown below. Figure 19As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the seventeenth embodiment in the first state are given in Table 49 below.

[0153] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the seventeenth embodiment of this application is shown below. Figure 19 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the seventeenth embodiment in the second state are given in Table 50 below.

[0154] Table 51 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the seventeenth embodiment.

[0155] Table 49 Table 50 Table 51 Eighteenth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the eighteenth embodiment of this application is shown below. Figure 20 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is convex near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the eighteenth embodiment in the first state are given in Table 52 below.

[0156] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the eighteenth embodiment of this application is shown below. Figure 20As shown in B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is convex near the optical axis O. Other parameters of the optical zoom lens 100 of the eighteenth embodiment in the second state are given in Table 53 below.

[0157] Table 54 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the eighteenth embodiment.

[0158] Table 52 Table 53 Table 54 Nineteenth Embodiment The nineteenth embodiment of this application discloses a schematic diagram of the optical zoom lens 100 in the first state as shown below. Figure 21As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the nineteenth embodiment in the first state are given in Table 55 below.

[0159] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the nineteenth embodiment of this application is shown below. Figure 21 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has positive refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is convex near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is concave near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the nineteenth embodiment in the second state are given in Table 56 below.

[0160] Table 57 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the nineteenth embodiment.

[0161] Table 55 Table 56 Table 57 Twentieth Embodiment The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the twentieth embodiment of this application is shown below. Figure 22 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twentieth embodiment in the first state are given in Table 58 below.

[0162] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the twentieth embodiment of this application is shown below. Figure 22As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has positive refractive power, the seventh lens L7 has negative refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is convex near the optical axis O; the object-side surface S13 of the seventh lens L7 is concave near the optical axis O, and the image-side surface S14 of the seventh lens L7 is concave near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twentieth embodiment in the second state are given in Table 59 below.

[0163] Table 60 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the twentieth embodiment.

[0164] Table 58 Table 59 Table 60 Example 21 The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the twenty-first embodiment of this application is shown below. Figure 23As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first steering element PR1 has negative refractive power, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has positive refractive power. The incident surface PR1-1 of the first steering element PR1 is convex near the optical axis O, and the exit surface PR1-2 of the first steering element PR1 is concave near the optical axis O; the object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twenty-first embodiment in the first state are given in Table 61 below.

[0165] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the twenty-first embodiment of this application is shown below. Figure 23 As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Further, the fifth lens L5 has negative refractive power, the sixth lens L6 has positive refractive power, the seventh lens L7 has negative refractive power, and the eighth lens L8 has positive refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is convex near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is convex near the optical axis O; the object-side surface S13 of the seventh lens L7 is concave near the optical axis O, and the image-side surface S14 of the seventh lens L7 is concave near the optical axis O; the object-side surface S15 of the eighth lens L8 is convex near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twenty-first embodiment in the second state are given in Table 62 below.

[0166] Table 63 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the twenty-first embodiment.

[0167] Table 61 Table 62 Table 63 Example 22 The structural schematic diagram of the optical zoom lens 100 in the first state disclosed in the twenty-second embodiment of this application is shown below. Figure 24 As shown in Figure A, the optical zoom lens 100, in its first state, includes a first steering element PR1, an aperture stop ST0, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. The first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, and the fourth lens L4 has negative refractive power. The object-side surface S1 of the first lens L1 is convex near the optical axis O, and the image-side surface S2 of the first lens L1 is convex near the optical axis O; the object-side surface S3 of the second lens L2 is convex near the optical axis O, and the image-side surface S4 of the second lens L2 is concave near the optical axis O; the object-side surface S5 of the third lens L3 is concave near the optical axis O, and the image-side surface S6 of the third lens L3 is convex near the optical axis O; the object-side surface S7 of the fourth lens L4 is convex near the optical axis O, and the image-side surface S8 of the fourth lens L4 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twenty-second embodiment in the first state are given in Table 64 below.

[0168] The structural schematic diagram of the optical zoom lens 100 in the second state disclosed in the twenty-second embodiment of this application is shown below. Figure 24As shown in Figure B, the optical zoom lens 100, in its second state, includes a first steering element PR1, an aperture stop STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, an eighth lens L8, a second steering element PR2, and a filter IR, arranged sequentially along the optical axis O from the object side to the image side. Furthermore, the fifth lens L5 has negative refractive power, the sixth lens L6 has negative refractive power, the seventh lens L7 has positive refractive power, and the eighth lens L8 has negative refractive power. The object-side surface S9 of the fifth lens L5 is concave near the optical axis O, and the image-side surface S10 of the fifth lens L5 is concave near the optical axis O; the object-side surface S11 of the sixth lens L6 is convex near the optical axis O, and the image-side surface S12 of the sixth lens L6 is concave near the optical axis O; the object-side surface S13 of the seventh lens L7 is convex near the optical axis O, and the image-side surface S14 of the seventh lens L7 is convex near the optical axis O; the object-side surface S15 of the eighth lens L8 is concave near the optical axis O, and the image-side surface S16 of the eighth lens L8 is concave near the optical axis O. Other parameters of the optical zoom lens 100 of the twenty-second embodiment in the second state are given in Table 65 below.

[0169] Table 66 gives the conic constant K and higher-order coefficients A2, A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical mirror in the twenty-second embodiment.

[0170] Table 64 Table 65 Table 66 Tables 67, 68, 69, and 70 respectively show the values ​​of fg1 / fg2, 100×ImgH / (f×Tan(FOV / 2)), and Rg1-1 / Rg1-n in the optical zoom lens 100 of the first to sixth, seventh to twelfth, thirteenth to eighteenth, and nineteenth to twenty-second embodiments. The values ​​of Rg1-n / Rg2-1, fs, f-1, f-1 / fs, (FOV-s) / 2, (FOV-1) / 2, FOV-1 / FOV-s, FNO-s, FNO-1, FNO-1 / FNO-s, fg1-1 / fg1-s, ATP1s-ATP1l, TTL-s, and TTL-1 are given. Among them, fg1 / fg2 are the values ​​based on the optical zoom lens 100 in the second state, Rg1-1 / Rg1-n is R1 / R8, and Rg1-n / Rg2-1 is R8 / R9.

[0171] Table 67 Table 68 Table 69 Table 70 Tables 71, 72, 73, and 74 respectively show the values ​​of f1 / (f-1), f2 / (f-1), f3 / (f-1), f4 / (f-1), f1 / (fs), f2 / (fs), f3 / (fs), f4 / (fs), f5 / (fs), f6 / (fs), f7(fs), f8 / (fs), R1 / (f-1), R2 / (f-1), R7 / (f-1), R8 / (f-1), R1 / (fs), R2 / (fs), R7 / (fs), R8 / (fs), R9 / (fs), EPD-s, EPD-1, ImgH-s, ImgH-1, CRA-s, and CRA-1 in the optical zoom lens 100 of the first to sixth, seventh to twelfth, thirteenth to eighteenth, and nineteenth to twenty-second embodiments. Table 71 Table 72 Table 73 Table 74 Please see Figure 25 This application also provides a camera module 200. The camera module 200 includes an optical zoom lens 100 and an image sensor 201, as described in any of the above embodiments. The image sensor 201 is disposed on the image side of the optical zoom lens 100. The image sensor 201 may be a complementary metal-oxide-semiconductor (CMOS) image sensor or a charge-coupled device (CCD).

[0172] Please see Figure 26This application also provides an electronic device 300. The electronic device 300 includes a housing 301 and a camera module 200, with the camera module 200 mounted on the housing 301. The electronic device 300 in this application includes, but is not limited to, imaging-enabled devices such as mobile phones, tablets, smartwatches, thumb cameras, in-vehicle devices, monitors, dashcams, drones, laptops, e-book readers, portable multimedia players (PMPs), portable telephones, video phones, mobile medical devices, and wearable devices.

[0173] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. An optical zoom lens, characterized in that, include: The first lens group has positive refractive force and can move along the optical path of the optical zoom lens. The second group of mirrors has negative refractive power; The optical zoom lens has a first state and a second state. When the optical zoom lens is in the first state, the first lens group is located in the first position, and the second lens group is located outside the optical path of the optical zoom lens. When the optical zoom lens is in the second state, the first lens group is located in the second position, and the second lens group is located inside the optical path of the optical zoom lens. The optical zoom lens satisfies the following relationship: 0.8 ≤ Rg1-1 / Rg1-n ≤ 1.8, or, -0.6≤Rg1-n / Rg2-1≤-0.1; Wherein, Rg1-1 is the radius of curvature of the incident surface of the first mirror group at the optical axis, Rg1-n is the radius of curvature of the emitting surface of the first mirror group at the optical axis, and Rg2-1 is the radius of curvature of the incident surface of the second mirror group at the optical axis.

2. The optical zoom lens as described in claim 1, characterized in that, The optical zoom lens satisfies the following relationship: 20mm≤fs≤26mm, and / or, 37mm≤f-1≤40mm, and / or, 1.5 ≤ f⁻¹ / fs ≤ 2.0; Wherein, fs is the effective focal length of the optical zoom lens in the first state, and f-1 is the effective focal length of the optical zoom lens in the second state.

3. The optical zoom lens as described in claim 1, characterized in that, The optical zoom lens satisfies the following relationship: 12°≤(FOV-s) / 2≤18°, and / or, 8°≤(FOV-1) / 2≤9.5°, and / or, 0.5≤FOV⁻¹ / FOV⁻s≤0.7; Wherein, FOV-s is the maximum field of view of the optical zoom lens in the first state, and FOV-1 is the maximum field of view of the optical zoom lens in the second state.

4. The optical zoom lens as described in claim 1, characterized in that, The optical zoom lens satisfies the following relationship: 2.5 ≤ FNO-s ≤ 4.1, and / or, 4.0 ≤ FNO⁻¹ ≤ 5.7, and / or, 1.35 ≤ FNO⁻¹ / FNO⁻s ≤ 1.65; Wherein, FNO-s is the aperture number of the optical zoom lens in the first state, and FNO-1 is the aperture number of the optical zoom lens in the second state.

5. The optical zoom lens as described in claim 1, characterized in that, The first lens group is a zoom lens group, and the optical zoom lens satisfies the following relationship: 0.98≤fg1-1 / fg1-s≤1.15; Wherein, fg1-s is the effective focal length of the first lens group in the first state, and fg1-1 is the effective focal length of the first lens group in the second state.

6. The optical zoom lens as described in claim 1, characterized in that, The optical zoom lens further includes a first steering element, which is disposed on the object side of the first lens group and located within the optical path of the optical zoom lens.

7. The optical zoom lens as described in claim 6, characterized in that, The first steering element has a negative bending force, and the first steering element causes the light to bend by 90°.

8. The optical zoom lens as described in claim 6, characterized in that, The optical zoom lens satisfies the following relationship: 7mm ≤ ATP1s - ATP1l ≤ 9.5mm, and / or, 45mm≤TTL≤52mm; Wherein, ATP1s is the distance on the optical axis between the light-incident surface of the first lens group and the image-side surface of the first steering element in the first state, ATP1l is the distance on the optical axis between the light-incident surface of the first lens group and the image-side surface of the first steering element in the second state, and TTL is the distance on the optical axis from the object-side surface of the first steering element to the imaging surface of the optical zoom lens.

9. The optical zoom lens as described in claim 1, characterized in that, The first lens group consists of four lenses with refractive power, which are arranged sequentially from the object side to the image side along the optical axis, including a first lens, a second lens, a third lens, and a fourth lens. The first lens has negative refractive power. The object side of the first lens is convex near the optical axis, and the image side of the first lens is convex near the optical axis. The object side of the fourth lens is convex near the optical axis, and the image side of the fourth lens is concave near the optical axis. The second lens group consists of four lenses with refractive power, which are arranged sequentially from the object side to the image side along the optical axis, including a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The object side of the fifth lens is concave near the optical axis.

10. The optical zoom lens as described in claim 9, characterized in that, The optical zoom lens satisfies the following relationship: 0.2≤f1 / f≤0.5, and / or, 0.2≤|f² / f|≤10, and / or, 0.35 ≤ |f³ / f| ≤ 3.5, and / or, 0.5 ≤ |f4 / f| ≤ 13.5, and / or, 0.4 ≤ |f5 / f| ≤ 21, and / or, 0.15 ≤ |f6 / f| ≤ 3.0, and / or, 0.2 ≤ |f7 / f| ≤ 3.0, and / or, 0.45≤|f8 / f|≤35; Wherein, f is the effective focal length of the optical zoom lens, f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, and f8 is the effective focal length of the eighth lens.

11. The optical zoom lens as described in claim 9, characterized in that, The optical zoom lens satisfies the following relationship: 0.15≤R1 / f≤0.36, and / or, -1≤R² / f≤-0.25, and / or, 0.1 ≤ R7 / f ≤ 0.65, and / or, 0.1 ≤ R8 / f ≤ 0.35, and / or, -1≤R9 / f≤-0.3; Where f is the effective focal length of the optical zoom lens, R1 is the radius of curvature of the object side of the first lens at the optical axis, R2 is the radius of curvature of the image side of the second lens at the optical axis, R7 is the radius of curvature of the object side of the fourth lens at the optical axis, R8 is the radius of curvature of the image side of the fourth lens at the optical axis, and R9 is the radius of curvature of the object side of the fifth lens at the optical axis.

12. The optical zoom lens as described in claim 1, characterized in that, The optical zoom lens further includes a second steering element. When the optical zoom lens is in a first state, the second steering element is located on the image side of the first lens group and within the optical path of the optical zoom lens. When the optical zoom lens is in a second state, the second steering element is located on the image side of the second lens group and within the optical path of the optical zoom lens.

13. A camera module, characterized in that, include: The optical zoom lens as described in any one of claims 1 to 12; and An image sensor is disposed on the image side of the optical zoom lens.

14. An electronic device, characterized in that, include: case; and The camera module as described in claim 13 is mounted on the housing.

Images