Zoom lens

Abstract

The invention provides a zoom lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens from an object side to an image side along an optical axis, and each of the first lens to the ninth lens comprises an object side surface which faces the object side and enables imaging light to pass through. And an image side surface facing the image side and allowing the imaging light to pass through. According to the zoom lens, only three lens groups are formed by the nine lenses, and the relative positions of the adjacent lens groups in at least one axial direction can be changed. The first lens has a positive refractive index and satisfies 1.700 > = ImgH / D11t21.

Description

Technical Field

[0001] This invention relates to a zoom lens. Specifically, this invention is particularly directed to a zoom lens primarily used for capturing images and videos, such as a zoom lens applicable to portable electronic devices like mobile phones, cameras, tablet computers, and personal digital assistants (PDAs). Background Technology

[0002] In recent years, zoom lenses have continuously evolved, expanding their applications and requiring their integration into portable electronic products with limited thickness. Furthermore, the demand for video recording in portable electronic products is increasing, with optical zoom using a single zoom lens or digital zoom using multiple prime lenses meeting diverse shooting needs. However, shooting systems composed of multiple prime lenses not only occupy considerable space due to the arrangement of multiple lenses, but also can cause discontinuities in image resolution or field of view when adjusting focus during recording due to differences in the lenses. Therefore, designing a slim, compact lens with zoom capabilities has become a pressing issue that needs to be addressed. Summary of the Invention

[0003] Therefore, embodiments of the present invention provide a zoom lens with a shallow depth that can be installed in portable electronic products with limited thickness, and which maintains good optical quality during zooming, by means of a light-deflecting element. The zoom lens of the present invention includes, from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Each of the first to ninth lenses includes an object-side surface facing the object side and through which imaging light passes, and an image-side surface facing the image side and through which imaging light passes. The zoom lens has only these nine lenses. The lens groups formed by these nine lenses are only three, and the relative positions of adjacent lens groups change in at least one axis.

[0004] In one embodiment of the present invention, the first lens has a positive refractive index and satisfies the following condition: 1.700 ≥ ImgH / D11t21.

[0005] In another embodiment of the present invention, the optical axis region on the object side of the fifth lens is concave, and the sixth lens has a positive refractive index and satisfies the following condition: 1.700 ≥ ImgH / D11t21.

[0006] In another embodiment of the present invention, the circumferential region of the object side of the fifth lens is concave, and the sixth lens has a positive refractive index and satisfies the following condition: 1.700 ≥ ImgH / D11t21.

[0007] In the zoom lens of the present invention, each embodiment may further selectively satisfy the following conditions: υ2 υ3 / υ8≧50.000; υ3 υ4 / υ1≧33.000; TTL / ImgH ≥ 6.500; 2.000≧D71t92 / D11t21; 0.180 ≥ Tmin / D11t21; 9.800≧ft / D11t21; 7.000≧fw / D11t21; 15.800≧(ft+fw) / D11t21; 25,000 ≥ TTL (Fnow+ Fnot) / fw≧3.000; 1.500 ≥ TTL / (Fnow) fw); 1.100 ≥ TTL / (Fnow) ft); 0.450 ≥ (Tmin) Fnot) / D11t21; 0.350 ≥ (Tmin) Fnow) / D11t21; (ft+ImgH) / (Fnot) Tmin) ≥ 9.000; 0.500 / degree≧TTL / (HFOVt fw); 0.400 / degree≧TTL / (HFOVt ft); 1.500 degrees≧Tmin (HFOVt+HFOVw) / ft.

[0008] Where HFOVt is the half-angle of the zoom lens in telephoto mode, HFOVw is the half-angle of the zoom lens in wide-angle mode, ft is the effective focal length of the zoom lens in telephoto mode, fw is the effective focal length of the zoom lens in wide-angle mode, Fnow is the aperture value of the zoom lens in wide-angle mode, and Fnot is the aperture value of the zoom lens in telephoto mode.

[0009] Tmin is the minimum thickness of the nine lenses (from the first to the ninth) on the optical axis. ImgH is the maximum image height of the zoom lens, and TTL is the distance on the optical axis from the object-side surface of the first lens to the image-side surface. υ1 is the Vd Abbe number of the first lens, υ2 is the Vd Abbe number of the second lens, υ3 is the Vd Abbe number of the third lens, υ4 is the Vd Abbe number of the fourth lens, and υ8 is the Vd Abbe number of the eighth lens. D71t92 is the distance on the optical axis from the object-side surface of the seventh lens to the image-side surface of the ninth lens, and D11t21 is the distance on the optical axis from the object-side surface of the first lens to the object-side surface of the second lens. Attached Figure Description

[0010] Figure 1 A schematic diagram illustrating the method for determining the curvature shape of the zoom lens of the present invention. Figure 1 ; Figure 2 A schematic diagram illustrating the method for determining the curvature shape of the zoom lens of the present invention. Figure 2 ; Figure 3 A schematic diagram illustrating the method for determining the curvature shape of the zoom lens of the present invention. Figure 3 ; Figure 4 A schematic diagram illustrating the method for determining the curvature shape of the zoom lens of the present invention. Figure 4 ; Figure 5 A schematic diagram illustrating the method for determining the curvature shape of the zoom lens of the present invention. Figure 5 ; Figure 6 A schematic diagram illustrating a first embodiment of the zoom lens of the present invention; Figure 7A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the first embodiment is shown; wherein, A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 7B A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the first embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 7C A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the focusing lens function of the first embodiment is shown; where I is the longitudinal spherical aberration on the imaging plane, J is the field curvature aberration in the sagittal direction, K is the field curvature aberration in the meridional direction, and L is the distortion aberration; Figure 7DA schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the focusing lens function of the first embodiment is shown; where M is the longitudinal spherical aberration on the imaging plane, N is the field curvature aberration in the sagittal direction, O is the field curvature aberration in the meridional direction, and P is the distortion aberration; Figure 8 A schematic diagram illustrating a second embodiment of the zoom lens of the present invention; Figure 9 A schematic diagram illustrating that a zoom lens of the present invention, exemplified by the second embodiment, actually includes a deflection element; Figure 10A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the second embodiment is shown; wherein, A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 10B A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the second embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 11 A schematic diagram illustrating a third embodiment of the zoom lens of the present invention; Figure 12A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the third embodiment is shown; where A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 12B A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the third embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 13 A schematic diagram illustrating a fourth embodiment of the zoom lens of the present invention; Figure 14A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the fourth embodiment is shown; where A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 14B A schematic diagram of longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the fourth embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 15 A schematic diagram illustrating a fifth embodiment of the zoom lens of the present invention; Figure 16A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the fifth embodiment is shown; where A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 16B A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the fifth embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 17 A schematic diagram illustrating a sixth embodiment of the zoom lens of the present invention; Figure 18A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the sixth embodiment is shown; where A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 18B A schematic diagram of longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the sixth embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 19 A schematic diagram illustrating a seventh embodiment of the zoom lens of the present invention; Figure 20A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the seventh embodiment is shown; where A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 20B A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the seventh embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 21 A schematic diagram illustrating an eighth embodiment of the zoom lens of the present invention; Figure 22A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the eighth embodiment is shown; wherein, A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 22BA schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the eighth embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 23 A schematic diagram illustrating a ninth embodiment of the zoom lens of the present invention; Figure 24A A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the wide-angle state under the zoom lens function of the ninth embodiment is shown; wherein, A is the longitudinal spherical aberration on the imaging plane, B is the field curvature aberration in the sagittal direction, C is the field curvature aberration in the meridional direction, and D is the distortion aberration; Figure 24B A schematic diagram illustrating the longitudinal spherical aberration and various aberrations in the telephoto state under the zoom lens function of the ninth embodiment is shown; where E is the longitudinal spherical aberration on the imaging plane, F is the field curvature aberration in the sagittal direction, G is the field curvature aberration in the meridional direction, and H is the distortion aberration; Figure 25 This shows detailed optical data for the first embodiment; Figure 26 This shows detailed aspherical data for the first embodiment; Figure 27 The optical data for the zoom lens and focus lens in their wide-angle and telephoto states, as detailed in the first embodiment, are shown. Figure 28 This shows detailed optical data for the second embodiment; Figure 29 This indicates detailed aspherical data for the second embodiment; Figure 30 The optical data for the wide-angle and telephoto states of the zoom lens in the second embodiment are shown in detail. Figure 31 This describes the detailed optical data of the third embodiment; Figure 32 This describes the detailed aspherical data of the third embodiment; Figure 33 The optical data for the zoom lens in the third embodiment, including its wide-angle and telephoto states, are detailed. Figure 34 This shows the detailed optical data for the fourth embodiment; Figure 35 This shows the detailed aspherical data of the fourth embodiment; Figure 36 The optical data for the zoom lens in the fourth embodiment, including its wide-angle and telephoto states, are detailed. Figure 37 This shows the detailed optical data for the fifth embodiment; Figure 38 This shows the detailed aspherical data for the fifth embodiment.

[0011] Figure 39 The optical data for the zoom lens in the fifth embodiment, including its wide-angle and telephoto states, are detailed. Figure 40 This shows the detailed optical data for the sixth embodiment; Figure 41 This shows the detailed aspherical data of the sixth embodiment; Figure 42 The optical data for the wide-angle and telephoto states of the zoom lens in the sixth embodiment are shown in detail. Figure 43 This shows the detailed optical data for the seventh embodiment; Figure 44 This shows the detailed aspherical data of the seventh embodiment; Figure 45 The optical data for the zoom lens in the seventh embodiment, including its wide-angle and telephoto states, are detailed. Figure 46 This shows the detailed optical data of the eighth embodiment; Figure 47 This shows the detailed aspherical data of the eighth embodiment; Figure 48 The optical data for the wide-angle and telephoto states of the zoom lens in the eighth embodiment are shown in detail. Figure 49 This shows the detailed optical data of the ninth embodiment; Figure 50 This shows the detailed aspherical data of the ninth embodiment; Figure 51 The optical data for the zoom lens in the ninth embodiment, including its wide-angle and telephoto states, are detailed. Figure 52 The key parameters for each embodiment are indicated.

[0012] Icon labels: 1 Zoom lens; 2 Aperture; 3 Filters; 4 Imaging plane; 5 Light-transforming elements, prisms; 11, 21, 31, 41, 51, 61, 71, 81, 91, 101 Side view of the object; 12, 22, 32, 42, 52, 62, 72, 82, 92, 102 Like the side view; 13, 16, 23, 26, 33, 36, 43, 46, 53, 56, 63, 66, 73, 76, 83, 86, 93, 96, 103, 106, Z1 Optical axis region; 14, 17, 24, 27, 34, 37, 44, 47, 54, 57, 64, 67, 74, 77, 84, 87, 94, 97, 104, 107, Z2 Circular region; 10 First lens; 20 Second lens; 30 Third lens; 40 Fourth lens; 50 Fifth lens; 60 The sixth lens; 70 Seventh lens; 80 Eighth lens; 90 Ninth lens; D1 First adjustable air gap; D2 Second adjustable air gap; D3 The third adjustable air gap; G1 First lens group; G2 Second lens group; G3 Third lens group; 100, 200, 300, 400, 500 lens; 130 Assembly Department; 211, 212 Parallel light rays; A1 Object side; A2 Image side; I Optical axis; CP Center point; CP1 First center point; CP2 Second center point; TP1 First conversion point; TP2 Second conversion point; OB Optical boundary; I Optical axis; Lc Key ray; Lm Edge rays; EL Extension line; Z3 Relay area; M, R Intersection point. Detailed Implementation

[0013] The terms "optical axis region," "circumferential region," "concave surface," and "convex surface" used in this specification and the claims should be interpreted based on the definitions listed in this specification.

[0014] The optical system described in this specification includes at least one lens that receives imaging rays incident on the optical system from parallel to the optical axis to within a half-angle (HFOV) relative to the optical axis. The imaging rays pass through the optical system and form an image on the imaging plane. The statement "a lens has a positive (or negative) refractive index" means that the paraxial refractive index of the lens, calculated using Gaussian optics theory, is positive (or negative). The statement "the object side (or image side) of the lens" is defined as the specific range through which the imaging rays pass on the lens surface. The imaging rays include at least two types of rays: the chief ray (Lc) and the marginal ray (Lm) (e.g., ...). Figure 1 (As shown). The object side (or image side) of the lens can be divided into different regions depending on the location, including the optical axis region, the circumferential region, or one or more relay regions in some embodiments, which will be described in detail below.

[0015] Figure 1 This is a radial sectional view of lens 100. Two reference points are defined on the surface of lens 100: a center point and a transition point. The center point of the lens surface is the intersection of this surface and the optical axis I. For example... Figure 1 As illustrated, the first center point CP1 is located on the object-side surface 110 of lens 100, and the second center point CP2 is located on the image-side surface 120 of lens 100. A transition point is a point on the lens surface whose tangent is perpendicular to the optical axis I. The optical boundary OB of the lens surface is defined as the point where the outermost radially outermost edge ray Lm passing through the lens surface intersects the lens surface. All transition points are located between the optical axis I and the optical boundary OB of the lens surface. In addition, the surface of lens 100 may have no transition points or at least one transition point. If a single lens surface has multiple transition points, these transition points are named sequentially from the first transition point in the radially outward direction. For example, the first transition point TP1 (closest to the optical axis I), the second transition point TP2 (as shown in the example), and the third transition point TP2 (as shown in the example) are named sequentially from the first transition point in the radially outward direction. Figure 4 (as shown) and the Nth conversion point (farthest from optical axis I).

[0016] When the lens surface has at least one transition point, the region from the center point to the first transition point TP1 is defined as the optical axis region, which includes the center point. The region radially outward from the transition point farthest from optical axis I (the Nth transition point) to the optical boundary OB is defined as the circumferential region. In some embodiments, a relay region may be included between the optical axis region and the circumferential region; the number of relay regions depends on the number of transition points. When the lens surface has no transition points, 0% to 50% of the distance from optical axis I to the optical boundary OB of the lens surface is defined as the optical axis region, and 50% to 100% of the distance from optical axis I to the optical boundary OB of the lens surface is defined as the circumferential region.

[0017] When a ray parallel to optical axis I passes through a region, if the ray bends towards optical axis I and the intersection point with optical axis I is located on the image side A2 of the lens, then that region is a convex surface. When a ray parallel to optical axis I passes through a region, if the extension of the ray intersects optical axis I at the object side A1 of the lens, then that region is a concave surface.

[0018] In addition, see Figure 1 The lens 100 may also include an assembly portion 130 extending radially outward from the optical boundary OB. The assembly portion 130 is generally used for assembling the lens 100 to a corresponding element (not shown) in an optical system. Imaging rays do not reach the assembly portion 130. The structure and shape of the assembly portion 130 are merely illustrative examples of the invention and are not intended to limit the scope of the invention. The assembly portion 130 of the lens discussed below may be partially or entirely omitted in the drawings.

[0019] See Figure 2 Define the region between the center point CP and the first conversion point TP1 as the optical axis region Z1. Define the region between the first conversion point TP1 and the optical boundary OB of the lens surface as the circumferential region Z2. For example... Figure 2 As shown, parallel ray 211 intersects optical axis I at the image side A2 of lens 200 after passing through optical axis region Z1. That is, the focal point of parallel ray 211 passing through optical axis region Z1 is located at point R on the image side A2 of lens 200. Since the ray intersects optical axis I at the image side A2 of lens 200, optical axis region Z1 is convex. Conversely, parallel ray 212 diverges after passing through circular region Z2. Figure 2 As shown, the extension EL of parallel ray 212 after passing through the circular region Z2 intersects the optical axis I at the object side A1 of the lens 200. That is, the focal point of parallel ray 212 after passing through the circular region Z2 is located at point M on the object side A1 of the lens 200. Since the extension EL of the ray intersects the optical axis I at the object side A1 of the lens 200, the circular region Z2 is concave. Figure 2 In the lens 200 shown, the first conversion point TP1 is the boundary between the optical axis region and the circumferential region, that is, the first conversion point TP1 is the boundary point between the convex surface and the concave surface.

[0020] On the other hand, the convexity / concavity of the optical axis region can also be determined using the method commonly used by those knowledgeable in the field: judging the convexity / concavity of the lens's optical axis region by the sign of the paraxial radius of curvature (R-value). The R-value is commonly used in optical design software, such as Zemax or CodeV. It is also frequently found in lens data sheets within optical design software. For the object-side, a positive R-value indicates a convex optical axis region, while a negative R-value indicates a concave optical axis region. Conversely, for the image-side, a positive R-value indicates a concave optical axis region, while a negative R-value indicates a convex optical axis region. This method yields results consistent with the aforementioned method using the intersection of a ray / ray extension with the optical axis, where the focal point of a ray parallel to the optical axis is located on either the object-side or image-side of the lens to determine the convexity / concavity. The terms "a region is convex (or concave)," "a region is convex (or concave)," or "a convex (or concave) region" used in this specification may be used interchangeably.

[0021] Figures 3 to 5 Examples of determining the surface shape and boundaries of the lens region in various situations are provided, including the aforementioned optical axis region, circumferential region, and relay region.

[0022] Figure 3 This is a radial sectional view of lens 300. See also... Figure 3 The image-side surface 320 of lens 300 has only one transition point TP1 within the optical boundary OB. The optical axis region Z1 and circumferential region Z2 of the image-side surface 320 of lens 300 are as follows... Figure 3 As shown. The R value of the side surface 320 of this image is positive (i.e., R>0), therefore, the optical axis region Z1 is concave.

[0023] Generally, the surface shape of each region bounded by a transition point will be opposite to that of its adjacent regions. Therefore, the transition point can be used to define the change in surface shape, i.e., from the transition point, a surface changes from concave to convex or from convex to concave. Figure 3 In the middle, since the optical axis region Z1 is concave and its shape changes at the transition point TP1, the circumferential region Z2 is convex.

[0024] Figure 4 This is a radial sectional view of lens 400. See also... Figure 4 The object-side surface 410 of lens 400 has a first conversion point TP1 and a second conversion point TP2. The area between the optical axis I and the first conversion point TP1 is defined as the optical axis region Z1 of the object-side surface 410. The R value of this object-side surface 410 is positive (i.e., R>0), therefore, the optical axis region Z1 is convex.

[0025] The area between the second conversion point TP2 and the optical boundary OB of the object-side surface 410 of the lens 400 is defined as a circumferential region Z2, which is also a convex surface. Furthermore, the area between the first conversion point TP1 and the second conversion point TP2 is defined as a relay region Z3, which is also a concave surface. See again. Figure 4 The object-side surface 410, radially outward from the optical axis I, sequentially includes the optical axis region Z1 between the optical axis I and the first conversion point TP1, the relay region Z3 located between the first conversion point TP1 and the second conversion point TP2, and the circumferential region Z2 between the second conversion point TP2 and the optical boundary OB of the object-side surface 410 of the lens 400. Since the optical axis region Z1 is convex, and its surface shape changes to concave from the first conversion point TP1, the relay region Z3 is concave. Furthermore, its surface shape changes to convex again from the second conversion point TP2, so the circumferential region Z2 is convex.

[0026] Figure 5 This is a radial sectional view of lens 500. The object-side surface 510 of lens 500 has no transition point. For a lens surface without a transition point, such as the object-side surface 510 of lens 500, the region from 0% to 50% of the distance measured from the optical axis I to the optical boundary OB of the lens surface is defined as the optical axis region, and the region from 50% to 100% of the distance measured from the optical axis I to the optical boundary OB of the lens surface is defined as the circumferential region. See also Figure 5 The lens 500 shown defines the optical axis region Z1 of the object-side surface 510 as 50% of the distance from the optical axis I to the optical boundary OB of the lens 500 surface. The R value of this object-side surface 510 is positive (i.e., R>0), therefore, the optical axis region Z1 is convex. Since the object-side surface 510 of the lens 500 has no transition point, the circumferential region Z2 of the object-side surface 510 is also convex. The lens 500 may further have an assembly portion (not shown) extending radially outward from the circumferential region Z2.

[0027] like Figure 6 As shown, this embodiment provides a zoom lens 1, which, from the object side A1 where an object (not shown) is placed to the image side A2 where the image is formed, along the optical axis I, is mainly composed of nine lenses, which sequentially include a first lens group G1, an aperture 2, a second lens group G2, a third lens group G3, and an image plane 4. Each of the first lens group G1, the second lens group G2, and the third lens group G3 contains a plurality of lenses. Figure 6 The first lens group G1 is illustrated to include a first lens 10 and a second lens 20; the second lens group G2 includes a third lens 30, a fourth lens 40, a fifth lens 50, and a sixth lens 60; and the third lens group G3 includes a seventh lens 70, an eighth lens 80, and a ninth lens 90, but the present invention is not limited thereto.

[0028] The zoom lens 1 of the present invention further includes only three lens groups, and the relative positions of adjacent lens groups change in at least one axis. Adjustable air gaps adjacent to each adjacent lens group can change the relative position of the lens groups in one axis; for example, they can be located between the first lens group G1 and the second lens group G2, between the second lens group G2 and the third lens group G3, or possibly between the third lens group G3 and the imaging plane 4. The lens groups can move along the optical axis I towards the object side A1 or the image side A2. When the lens groups move along the optical axis I, the relative positions in at least one axis change accordingly, allowing the zoom lens 1 of the present invention to form several different focusing states, thereby achieving the effect of focal length transformation, such as forming a telephoto state corresponding to a telephoto lens and a wide-angle state corresponding to a short focal length lens. Therefore, the zoom lens 1 of the present invention is an optical lens designed with both zoom and focusing functions.

[0029] In the drawings of this invention, the lens diagrams of each embodiment clearly reveal the number, surface shape, and other parameters of each lens in that embodiment. Since the number, surface shape, and other parameters of the lenses in the focusing lens function are the same as those in the zoom lens function, only the relative position of at least one axis between the lenses changes. Therefore, aberration diagrams for both the wide-angle and telephoto states of the zoom lens function in each embodiment are drawn to clearly reveal the differences between the telephoto and wide-angle states.

[0030] Generally speaking, the first lens 10, second lens 20, third lens 30, fourth lens 40, fifth lens 50, sixth lens 60, seventh lens 70, eighth lens 80, and ninth lens 90 in the zoom lens 1 of this invention can all be made of transparent plastic material, but this invention is not limited thereto. Each lens has an appropriate refractive index. Optical axis I is the optical axis of the entire zoom lens 1, so the optical axis of each lens is the same as the optical axis of the zoom lens 1.

[0031] In various embodiments of the present invention, the filter 3 is disposed between the ninth lens 90 and the imaging surface 4. It can be a filter with various suitable functions, such as an infrared cut-off filter, which is used to prevent infrared rays in the imaging light from being transmitted to the imaging surface 4 and affecting the image quality. In addition, in various embodiments of the present invention, the zoom lens 1 may have a light deflection element 5, such as a prism 5, which can deflect the optical axis I by 90 degrees to provide a depth that can be installed in portable electronic products with limited thickness. Figure 9 The actual situation in which the optical axis I in the zoom lens 1 of the present invention is bent by the optical bending element 5 is shown as an example. In other figures, the bending of the optical axis I by the light bending element 5 may be omitted to simplify the diagram.

[0032] In addition, this zoom lens 1 also includes an aperture stop 2, set in an appropriate position. Figure 6 In this configuration, aperture 2 is positioned within the adjustable air gap between the first lens group G1 and the second lens group G2, specifically between the second lens 20 and the third lens 30. For example... Figure 6 As illustrated, when light emitted from the object to be photographed (not shown) located on the object side A1 enters the zoom lens 1 of the present invention, it will sequentially pass through the first lens 10, the light deflection element 5, the second lens 20, the aperture 2, the third lens 30, the fourth lens 40, the fifth lens 50, the sixth lens 60, the seventh lens 70, the eighth lens 80, the ninth lens 90 and the filter 3, and then be focused on the imaging surface 4 on the image side A2 to form a clear image.

[0033] Each lens in the zoom lens 1 of the present invention has an object-side surface facing the object side A1 and through which imaging light passes, and an image-side surface facing the image side A2 and through which imaging light passes. Furthermore, each lens in the zoom lens 1 of the present invention also has an optical axis region and a circumferential region. For example, the first lens 10 has an object-side surface 11 and an image-side surface 12; the second lens 20 has an object-side surface 21 and an image-side surface 22; the third lens 30 has an object-side surface 31 and an image-side surface 32; the fourth lens 40 has an object-side surface 41 and an image-side surface 42; the fifth lens 50 has an object-side surface 51 and an image-side surface 52; the sixth lens 60 has an object-side surface 61 and an image-side surface 62; the seventh lens 70 has an object-side surface 71 and an image-side surface 72; the eighth lens 80 has an object-side surface 81 and an image-side surface 82; and the ninth lens 90 has an object-side surface 91 and an image-side surface 92. Each object-side surface and each image-side surface also has an optical axis region and a circumferential region.

[0034] Each lens in the zoom lens 1 of the present invention also has a thickness T along the optical axis I. For example, the first lens 10 has a first lens thickness T1, the second lens 20 has a second lens thickness T2, the third lens 30 has a third lens thickness T3, the fourth lens 40 has a fourth lens thickness T4, the fifth lens 50 has a fifth lens thickness T5, the sixth lens 60 has a sixth lens thickness T6, the seventh lens 70 has a seventh lens thickness T7, the eighth lens 80 has an eighth lens thickness T8, and the ninth lens 90 has a ninth lens thickness T9. ALT is the sum of the thicknesses of all lenses in the zoom lens 1 of the present invention along the optical axis I. Therefore, the ALT of the zoom lens 1 is T1 + T2 + T3 + T4 + T5 + T6 + T7 + T8 + T9. Tmin is the minimum value among the nine lens thicknesses of the first lens 10 to the ninth lens 90 along the optical axis I, that is, the minimum value among T1, T2, T3, T4, T5, T6, T7, T8, and T9.

[0035] In the zoom lens 1 of the present invention, there is a distance between each lens along the optical axis I. For example, G12 is the distance on optical axis I from the image side 12 of the first lens 10 to the object side 21 of the second lens 20; G23 is the distance on optical axis I from the image side 22 of the second lens 20 to the object side 31 of the third lens 30; G34 is the distance on optical axis I from the image side 32 of the third lens 30 to the object side 41 of the fourth lens 40; G45 is the distance on optical axis I from the image side 42 of the fourth lens 40 to the object side 51 of the fifth lens 50; G56 is the distance on optical axis I from the image side 52 of the fifth lens 50 to the object side 61 of the sixth lens 60; G67 is the distance on optical axis I from the image side 62 of the sixth lens 60 to the object side 71 of the seventh lens 70; G78 is the distance on optical axis I from the image side 72 of the seventh lens 70 to the object side 81 of the eighth lens 80; and G89 is the distance on optical axis I from the image side 82 of the eighth lens 80 to the object side 91 of the ninth lens 90. AAG is the sum of the distances between all lenses in zoom lens 1 on optical axis I, i.e., AAG = G12 + G23 + G34 + G45 + G56 + G67 + G78 + G89. D1 is the first adjustable air gap, i.e., the air gap between the first lens group G1 and the second lens group G2 on optical axis I; D2 is the second adjustable air gap, i.e., the air gap between the second lens group G2 and the third lens group G3 on optical axis I; D3 is the third adjustable air gap, i.e., the air gap between the filter 3 and the imaging surface 4 on optical axis I.

[0036] D11t21 is the distance on optical axis I between the object side surface 11 of the first lens 10 and the object side surface 21 of the second lens 20, and D71t92 is the distance on optical axis I between the object side surface 71 of the seventh lens 70 and the image side surface 92 of the ninth lens 90.

[0037] When filter 3 is positioned between the ninth lens 90 and the imaging surface 4, G9F represents the distance from the ninth lens 90 to filter 3 on the optical axis I, TF represents the thickness of filter 3 on the optical axis I, GFP represents the distance from filter 3 to imaging surface 4 on the optical axis I, and BFL is the back focal length of zoom lens 1, which is the distance from the image side 92 of the ninth lens 90 to imaging surface 4 on the optical axis I, i.e., BFL = G9F + TF + GFP.

[0038] Additionally, fw is the effective focal length of zoom lens 1 in wide-angle mode (short focal length); ft is the effective focal length of zoom lens 1 in telephoto mode (long focal length). Fnow is the aperture value of zoom lens 1 in wide-angle mode; Fnot is the aperture value of zoom lens 1 in telephoto mode. HFOVw is the half-angle of zoom lens 1 in wide-angle mode, i.e., half of the maximum field of view; HFOVt is the half-angle of zoom lens 1 in telephoto mode, i.e., half of the maximum field of view. Furthermore, the object distance for all parameters in both telephoto and wide-angle modes is infinite.

[0039] The distance on the optical axis I from the object surface 11 of the first lens 10 to the imaging surface 4 is the system length TTL of the zoom lens 1. The maximum image height of the zoom lens 1 is ImgH.

[0040] Furthermore, if the above distance includes more than two optical axes, it is the sum of the distances on different optical axes.

[0041] Furthermore, the following are defined: f1 is the focal length of the first lens 10; f2 is the focal length of the second lens 20; f3 is the focal length of the third lens 30; f4 is the focal length of the fourth lens 40; f5 is the focal length of the fifth lens 50; f6 is the focal length of the sixth lens 60; f7 is the focal length of the seventh lens 70; f8 is the focal length of the eighth lens 80; and f9 is the focal length of the ninth lens 90. n1 is the nd refractive index of the first lens 10; n2 is the nd refractive index of the second lens 20; n3 is the nd refractive index of the third lens 30; n4 is the nd refractive index of the fourth lens 40; n5 is the nd refractive index of the fifth lens 50; n6 is the nd refractive index of the sixth lens 60; n7 is the nd refractive index of the seventh lens 70; n8 is the nd refractive index of the eighth lens 80; n9 is the nd refractive index of the ninth lens 90; fG1 is the focal length of the first lens group G1; fG2 is the focal length of the second lens group G2; fG3 is the focal length of the third lens group G3. υ1 is the Vd Abbe number of the first lens 10; υ2 is the Vd Abbe number of the second lens 20; υ3 is the Vd Abbe number of the third lens 30; υ4 is the Vd Abbe number of the fourth lens 40; υ5 is the Vd Abbe number of the fifth lens 50; υ6 is the Vd Abbe number of the sixth lens 60; υ7 is the Vd Abbe number of the seventh lens 70; υ8 is the Vd Abbe number of the eighth lens 80; and υ9 is the Vd Abbe number of the ninth lens 90.

[0042] The material parameters of the lens disclosed in the optical datasheet of the embodiments are in the international glass code format of nd refractive index and Vd Abbe number, so that those skilled in the art can know the specific material implementation. Here, nd is the refractive index of the material at the d-helium yellow line of 587.56 nm, and Vd is calculated using the refractive index of the material at the d, F, and C wavelengths of the Fraunhofer spectrum. The focal length values ​​disclosed in the optical datasheet of the embodiments are calculated based on the refractive index of the optical system implemented at that wavelength. Since the primary wavelength of the embodiments of the present invention is 555 nm, the focal length values ​​of the present invention are calculated based on the refractive index of the material at 555 nm.

[0043] First Embodiment Please see Figure 6 The following is an example of a first embodiment of the zoom lens 1 of the present invention. In the following embodiments, the zoom lens function of the zoom lens 1 of the present invention is a focal length state corresponding to an infinite object distance, the focusing lens function is a focusing state corresponding to macro focusing, the telephoto state corresponds to a telephoto state, and the short focal length state corresponds to a wide-angle state. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under the zoom lens function, please refer to... Figure 7A For Part A, the field curvature aberration in the sagittal direction under wide-angle mode with zoom lens functionality, please refer to [reference needed]. Figure 7A For Part B, field curvature aberration in the tangential direction under wide-angle mode with zoom lens functionality, please refer to [reference needed]. Figure 7A For Part C, distortion aberration in wide-angle mode under zoom lens function, please refer to [link / reference]. Figure 7A Part D; For longitudinal spherical aberration on image plane 4 in telephoto mode with zoom lens function, please refer to [reference needed]. Figure 7B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 7B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 7B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 7B The H part. For the longitudinal spherical aberration on image plane 4 in wide-angle mode under focusing lens function, please refer to... Figure 7C For the field curvature aberration in the sagittal direction of the I section and the wide-angle state under focusing lens function, please refer to [reference needed]. Figure 7C For the J-section and the meridional field curvature aberration in the wide-angle state under focusing lens function, please refer to [reference needed]. Figure 7C For the K section and distortion / aberration in wide-angle mode under focusing lens function, please refer to [reference needed]. Figure 7CFor the L part; regarding the longitudinal spherical aberration on image plane 4 in telephoto mode under focusing lens function, please refer to... Figure 7D For the M-section and the field curvature aberration in the sagittal direction under telephoto mode with a focusing lens, please refer to [reference needed]. Figure 7D For the N-part and the field curvature aberration in the meridional direction under the telephoto state of the focusing lens function, please refer to [reference needed]. Figure 7D For the O-section and the distortion and aberration in the telephoto state under focusing lens function, please refer to [reference needed]. Figure 7D The P part. In all embodiments, the Y-axis of each spherical aberration map represents the field of view, and its highest point is 1.0. In all embodiments, the Y-axis of each aberration map and distortion map represents the image height.

[0044] The zoom lens 1 of the first embodiment mainly consists of a first lens group G1, an aperture 2, a second lens group G2, a third lens group G3, and an imaging plane 4. The first lens group G1, the second lens group G2, and the third lens group G3 contain a total of nine lenses with refractive power, namely, a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50, a sixth lens 60, a seventh lens 70, an eighth lens 80, and a ninth lens 90. Specifically, the first lens group G1 includes the first lens 10 and the second lens 20; the second lens group G2 includes the third lens 30, the fourth lens 40, the fifth lens 50, and the sixth lens 60; and the third lens group G3 includes the seventh lens 70, the eighth lens 80, and the ninth lens 90. The aperture 2 of the first embodiment is located between the first lens group G1 and the second lens group G2, specifically in the first adjustable air gap D1 located between the second lens 20 and the third lens 30 within the space G23.

[0045] The first lens 10 has a positive refractive index. The optical axis region 13 of the object-side surface 11 of the first lens 10 is convex, and its circumferential region 14 is also convex. The optical axis region 16 of the image-side surface 12 of the first lens 10 is convex, and its circumferential region 17 is also convex. Both the object-side surface 11 and the image-side surface 12 of the first lens 10 are aspherical, but this is not a limitation.

[0046] The second lens 20 has a negative refractive index. The optical axis region 23 and its circumferential region 24 of the object-side surface 21 of the second lens 20 are convex, and the optical axis region 26 and its circumferential region 27 of the image-side surface 22 of the second lens 20 are concave. Both the object-side surface 21 and the image-side surface 22 of the second lens 20 are aspherical, but this is not a limitation.

[0047] The third lens 30 has a positive refractive index. The optical axis region 33 of the object-side surface 31 of the third lens 30 is convex, and its circumferential region 34 is also convex. The optical axis region 36 of the image-side surface 32 of the third lens 30 is convex, and its circumferential region 37 is also convex. Both the object-side surface 31 and the image-side surface 32 of the third lens 30 are aspherical, but this is not a limitation.

[0048] The fourth lens 40 has a negative refractive index. The optical axis region 43 of the object-side surface 41 of the fourth lens 40 is concave, and its circumferential region 44 is also concave. The optical axis region 46 of the image-side surface 42 of the fourth lens 40 is concave, and its circumferential region 47 is convex. Both the object-side surface 41 and the image-side surface 42 of the fourth lens 40 are aspherical, but this is not a limitation.

[0049] The fifth lens 50 has a positive refractive index. The optical axis region 53 and its circumferential region 54 of the object-side surface 51 of the fifth lens 50 are concave, and the optical axis region 56 and its circumferential region 57 of the image-side surface 52 of the fifth lens 50 are convex. Both the object-side surface 51 and the image-side surface 52 of the fifth lens 50 are aspherical, but this is not a limitation.

[0050] The sixth lens 60 has a positive refractive index. The optical axis region 63 of the object-side surface 61 of the sixth lens 60 is concave, as is its circumferential region 64. The optical axis region 66 of the image-side surface 62 of the sixth lens 60 is convex, as is its circumferential region 67. Both the object-side surface 61 and the image-side surface 62 of the sixth lens 60 are aspherical, but this is not a limitation.

[0051] The seventh lens 70 has a positive refractive index. The optical axis region 73 of the object-side surface 71 of the seventh lens 70 is concave and its circumferential region 74 is convex. The optical axis region 76 of the image-side surface 72 of the seventh lens 70 is convex and its circumferential region 77 is concave. Both the object-side surface 71 and the image-side surface 72 of the seventh lens 70 are aspherical, but this is not a limitation.

[0052] The eighth lens 80 has a positive refractive index. The optical axis region 83 of the object-side surface 81 of the eighth lens 80 is convex and its circumferential region 84 is concave. The optical axis region 86 of the image-side surface 82 of the eighth lens 80 is convex and its circumferential region 87 is convex. Both the object-side surface 81 and the image-side surface 82 of the eighth lens 80 are aspherical, but this is not a limitation.

[0053] The ninth lens 90 has a negative refractive index. The optical axis region 93 and its circumferential region 94 of the object-side surface 91 of the ninth lens 90 are concave, as are the optical axis region 96 and its circumferential region 97 of the image-side surface 92. Both the object-side surface 91 and the image-side surface 92 of the ninth lens 90 are aspherical, but this is not a limitation.

[0054] In the zoom lens 1 of this embodiment, from the first lens 10 to the ninth lens 90, the object-side surface 11 / 21 / 31 / 41 / 51 / 61 / 71 / 81 / 91 and the image-side surface 12 / 22 / 32 / 42 / 52 / 62 / 72 / 82 / 92 may be aspherical, but are not limited thereto. If the object-side surface or image-side surface of the lens of the present invention is aspherical, such aspherical surface is defined by the following formula:

[0055] in: Y represents the perpendicular distance between a point on the aspherical surface and the optical axis I; Z represents the depth of the aspherical surface (the perpendicular distance between a point on the aspherical surface that is Y away from the optical axis I and the tangent plane that is tangent to the vertex on the optical axis I of the aspherical surface). R represents the radius of curvature of the lens surface near the optical axis I; K is the conic constant. a i Let a be the i-th order aspherical coefficient, where the a2 coefficient in each embodiment is 0.

[0056] The optical data of the zoom lens 1 in the first embodiment are as follows: Figure 25 As shown, the aspherical data is as follows Figure 26 As shown, the optical data for the zoom lens and focusing lens in wide-angle and telephoto states, including the object distance, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length (EFL), the aperture value (Fno), and the half-angle field of view (HFOV), are as follows: Figure 27As shown. In the zoom lens 1 system of the following embodiments, the zoom lens 1 in wide-angle and telephoto states will have different object distances, adjustable air gaps, effective focal lengths, aperture values, and half-angle values. For example, the effective focal length fw of the zoom lens 1 in the short focal length wide-angle state; the effective focal length ft of the zoom lens 1 in the telephoto state; the aperture value Fnow of the zoom lens 1 in the wide-angle state; the aperture value Fnot of the zoom lens 1 in the telephoto state; the half-angle value HFOVw of the zoom lens 1 in the wide-angle state; and the half-angle value HFOVt of the zoom lens 1 in the telephoto state. The units for the effective focal length, image height, radius of curvature, thickness, gap distance, object distance, and length of the zoom lens 1 are all millimeters, and the unit for HFOV is degrees. The object distance in the zoom state is infinite, and the object distance in the focusing state is 300 millimeters. In this embodiment, ImgH = 6.129 mm; TTL = 43.813 mm. In zoom mode, fw=22.914mm; ft=32.538mm; Fnow=2.200; Fnot=3.039; HFOVw=14.651 degrees; HFOVt=10.465 degrees; EFL=28.091mm, Fno=2.660, HFOV=12.052 degrees. In zoom mode, the wide-angle EFL is 22.914mm, Fno is 2.200, and HFOV is 14.651 degrees; in zoom mode, the telephoto EFL is 32.538mm, Fno is 3.039, and HFOV is 10.465 degrees; in focus mode, the wide-angle EFL is 19.249mm, Fno is 2.062, and HFOV is 15.844 degrees; in focus mode, the telephoto EFL is 27.994mm, Fno is 3.042, and HFOV is 10.498 degrees.

[0057] In this embodiment, under wide-angle zoom lens conditions, the longitudinal spherical aberration is ±0.03mm; sagittal aberration is ±0.025mm; meridional aberration is ±0.05mm; and distortion aberration is ±2.5%. Under telephoto zoom lens conditions, the longitudinal spherical aberration is ±0.05mm; sagittal aberration is ±0.045mm; meridional aberration is ±0.05mm; and distortion aberration is ±2.0%. Under wide-angle focusing lens conditions, the longitudinal spherical aberration is ±0.025mm; sagittal aberration is ±0.03mm; meridional aberration is ±0.06mm; and distortion aberration is ±3.0%. Under telephoto focusing lens conditions, the longitudinal spherical aberration is ±0.045mm; sagittal aberration is ±0.05mm; meridional aberration is ±0.08mm; and distortion aberration is ±2.5%.

[0058] Second Embodiment Please see Figure 8 The diagram illustrates the function of the zoom lens in a second embodiment of the zoom lens 1 of the present invention. Figure 9 A schematic diagram illustrating the actual light-deflecting element 5 of the zoom lens 1, taking the second embodiment of the present invention as an example, is shown as a representative example.

[0059] Please note that, starting from the second embodiment, only schematic diagrams of the zoom lens function in each embodiment are shown, while schematic diagrams of the focusing lens function are omitted. Furthermore, to simplify and clearly illustrate the diagrams, starting from the second embodiment, only the optical axis and circumferential regions of each lens with different surface shapes compared to the first embodiment are specifically marked on the diagrams; the optical axis and circumferential regions with the same surface shapes as the lenses in the first embodiment, such as concave or convex surfaces, are not separately marked. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under the zoom lens function of the second embodiment, please refer to... Figure 10A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 10A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 10A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 10A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 10B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 10B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 10B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 10B The design of the second embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. Furthermore, this embodiment differs from the first embodiment in that the optical axis region 16 of the image-side surface 12 of the first lens 10 is concave, the circumferential region 17 of the image-side surface 12 of the first lens 10 is concave, the optical axis region 23 of the object-side surface 21 of the second lens 20 is concave, the circumferential region 24 of the object-side surface 21 of the second lens 20 is concave, the optical axis region 26 of the image-side surface 22 of the second lens 20 is convex, the circumferential region 27 of the image-side surface 22 of the second lens 20 is convex, the optical axis region 46 of the image-side surface 42 of the fourth lens 40 is convex, the seventh lens 70 has a negative refractive index, and the optical axis region 83 of the object-side surface 81 of the eighth lens 80 is concave.

[0060] Detailed optical data for the second embodiment are as follows: Figure 28 As shown in Figure 29, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 30 As shown. In this embodiment, ImgH = 6.129mm; TTL = 108.424mm. In zoom mode, fw = 42.371mm; ft = 61.487mm; Fnow = 2.200; Fnot = 3.155; HFOVw = 8.302 degrees; HFOVt = 5.649 degrees; in zoom mode, wide-angle mode, EFL = 42.371mm, Fno = 2.200, HFOV = 8.302 degrees; in zoom mode, telephoto mode, EFL = 61.487mm, Fno = 3.155, HFOV = 5.649 degrees.

[0061] In this embodiment, in the wide-angle state of the zoom lens, the longitudinal spherical aberration is ±0.035mm; the sagittal aberration is ±0.04mm; the meridional aberration is ±0.1mm; and the distortion aberration is ±1.2%. In the telephoto state of the zoom lens, the longitudinal spherical aberration is ±0.1mm; the sagittal aberration is ±0.1mm; the meridional aberration is ±0.1mm; and the distortion aberration is ±0.9%. This embodiment has the following advantages over the first embodiment: 1. The distortion aberration in the wide-angle state of the zoom lens function in this embodiment is better than that in the wide-angle state of the zoom lens function in the first embodiment; 2. The distortion aberration in the telephoto state of the zoom lens function in this embodiment is better than that in the telephoto state of the zoom lens function in the first embodiment; 3. The thickness difference between the optical axis and the circumferential region of the lens in this embodiment is smaller than that in the first embodiment, making it easier to manufacture and thus resulting in a higher yield.

[0062] Third Embodiment Please see Figure 11 This illustrates a third embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under the zoom lens function of the third embodiment, please refer to... Figure 12A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 12A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 12A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 12A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 12B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 12B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 12B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 12BThe H part. The design of the third embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. Furthermore, this embodiment differs from the first embodiment described above in that the optical axis region 16 of the image-side surface 12 of the first lens 10 is concave, the circumferential region 17 of the image-side surface 12 of the first lens 10 is concave, the optical axis region 23 of the object-side surface 21 of the second lens 20 is concave, the circumferential region 24 of the object-side surface 21 of the second lens 20 is concave, the third lens 30 has a negative refractive index, the optical axis region 36 of the image-side surface 32 of the third lens 30 is concave, the circumferential region 37 of the image-side surface 32 of the third lens 30 is concave, the fourth lens 40 has a positive refractive index, the optical axis region 43 of the object-side surface 41 of the fourth lens 40 is convex, the circumferential region 44 of the object-side surface 41 of the fourth lens 40 is convex, the optical axis region 46 of the image-side surface 42 of the fourth lens 40 is convex, the fifth lens 50 has a negative refractive index, the optical axis region 83 of the object-side surface 81 of the eighth lens 80 is concave, and the circumferential region 84 of the object-side surface 81 of the eighth lens 80 is convex.

[0063] Detailed optical data for the third embodiment are as follows: Figure 31 As shown in Figure 32, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 33 As shown. In this embodiment, ImgH=6.129mm; TTL=57.516mm; in zoom mode, fw=28.162mm; ft=39.990mm; Fnow=2.200; Fnot=3.129; HFOVw=12.467 degrees; HFOVt=8.647 degrees; in zoom mode, wide-angle mode, EFL=28.162mm, Fno=2.200, HFOV=12.467 degrees; in zoom mode, telephoto mode, EFL=39.990mm, Fno=3.129, HFOV=8.647 degrees.

[0064] In this embodiment, in the wide-angle state of the zoom lens, the longitudinal spherical aberration is ±0.045mm; the sagittal aberration is ±0.05mm; the meridional aberration is ±0.05mm; and the distortion aberration is ±1.8%. In the telephoto state of the zoom lens, the longitudinal spherical aberration is ±0.12mm; the sagittal aberration is ±0.12mm; the meridional aberration is ±0.12mm; and the distortion aberration is ±0.9%. This embodiment has the following advantages over the first embodiment: 1. The distortion aberration in the wide-angle state of the zoom lens function in this embodiment is better than that in the wide-angle state of the zoom lens function in the first embodiment; 2. The distortion aberration in the telephoto state of the zoom lens function in this embodiment is better than that in the telephoto state of the zoom lens function in the first embodiment.

[0065] Fourth embodiment Please see Figure 13 This illustrates a fourth embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under the zoom lens function of the fourth embodiment, please refer to... Figure 14A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 14A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 14A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 14A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 14B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 14B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 14B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 14BThe H part. The design of the fourth embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. In addition, this embodiment differs from the first embodiment in that the optical axis region 16 of the image side 12 of the first lens 10 is concave, the circumferential region 17 of the image side 12 of the first lens 10 is concave, the optical axis region 23 of the object side 21 of the second lens 20 is concave, the circumferential region 24 of the object side 21 of the second lens 20 is concave, the optical axis region 26 of the image side 22 of the second lens 20 is convex, the circumferential region 27 of the image side 22 of the second lens 20 is convex, the optical axis region 46 of the image side 42 of the fourth lens 40 is convex, and the seventh lens 70 has The seventh lens 70 has a negative refractive index. The circumferential region 74 of the object-side surface 71 of the seventh lens 70 is concave, and the optical axis region 76 of the image-side surface 72 of the seventh lens 70 is concave. The eighth lens 80 has a negative refractive index. The circumferential region 84 of the object-side surface 81 of the eighth lens 80 is convex, and the optical axis region 86 of the image-side surface 82 of the eighth lens 80 is concave. The circumferential region 87 of the image-side surface 82 of the eighth lens 80 is concave. The ninth lens 90 has a positive refractive index. The optical axis region 93 of the object-side surface 91 of the ninth lens 90 is convex, and the circumferential region 94 of the object-side surface 91 of the ninth lens 90 is convex.

[0066] Detailed optical data for the fourth embodiment are as follows: Figure 34 As shown in Figure 35, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 36 As shown. In this embodiment, ImgH=6.129mm; TTL=57.482mm; in zoom mode, fw=26.344mm; ft=37.409mm; Fnow=2.200; Fnot=3.103; HFOVw=12.800 degrees; HFOVt=9.174 degrees; in zoom mode, wide-angle mode, EFL=26.344mm, Fno=2.200, HFOV=12.800 degrees; in zoom mode, telephoto mode, EFL=37.409mm, Fno=3.103, HFOV=9.174 degrees.

[0067] In this embodiment, under wide-angle zoom lens conditions, the longitudinal spherical aberration is ±0.02mm; the sagittal aberration is ±0.02mm; the meridional aberration is ±0.035mm; and the distortion aberration is ±2.5%. Under telephoto zoom lens conditions, the longitudinal spherical aberration is ±0.14mm; the sagittal aberration is ±0.14mm; the meridional aberration is ±0.14mm; and the distortion aberration is ±1.8%. This embodiment has the following advantages over the first embodiment: 1. The sagittal field curvature aberration under wide-angle zoom lens conditions in this embodiment is better than that under wide-angle zoom lens conditions in the first embodiment; 2. The meridional field curvature aberration under wide-angle zoom lens conditions in this embodiment is better than that under wide-angle zoom lens conditions in the first embodiment; 3. The thickness difference between the optical axis and the circumferential region of the lens in this embodiment is smaller than that in the first embodiment, making it easier to manufacture and thus resulting in a higher yield.

[0068] Fifth embodiment Please see Figure 15 This illustrates a fifth embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under zoom lens function in the fifth embodiment, please refer to... Figure 16A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 16A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 16A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 16A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 16B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 16B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 16B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 16BThe design of the fifth embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. Furthermore, this embodiment differs from the first embodiment in that the optical axis region 16 of the image-side surface 12 of the first lens 10 is concave, the circumferential region 17 of the image-side surface 12 of the first lens 10 is concave, the second lens 20 has a positive refractive index, the optical axis region 23 of the object-side surface 21 of the second lens 20 is concave, the circumferential region 24 of the object-side surface 21 of the second lens 20 is concave, the optical axis region 26 of the image-side surface 22 of the second lens 20 is convex, the circumferential region 27 of the image-side surface 22 of the second lens 20 is convex, the seventh lens 70 has a negative refractive index, the optical axis region 83 of the object-side surface 81 of the eighth lens 80 is concave, and the circumferential region 97 of the image-side surface 92 of the ninth lens 90 is convex.

[0069] Detailed optical data for the fifth embodiment are as follows: Figure 37 As shown in Figure 38, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 39 As shown. In this embodiment, ImgH=6.129mm; TTL=47.283mm; in zoom mode, fw=17.257mm; ft=24.504mm; Fnow=2.200; Fnot=3.179; HFOVw=19.311 degrees; HFOVt=13.933 degrees; in zoom mode, wide-angle mode, EFL=17.257mm, Fno=2.200, HFOV=19.311 degrees; in zoom mode, telephoto mode, EFL=24.504mm, Fno=3.179, HFOV=13.933 degrees.

[0070] In this embodiment, in the wide-angle mode of the zoom lens, the longitudinal spherical aberration is ±0.016mm; the sagittal aberration is ±0.15mm; the meridional aberration is ±0.04mm; and the distortion aberration is ±3.0%. In the telephoto mode of the zoom lens, the longitudinal spherical aberration is ±0.045mm; the sagittal aberration is ±0.05mm; the meridional aberration is ±0.07mm; and the distortion aberration is ±0.9%. Compared with the first embodiment, this embodiment has the following advantages: 1. The field curvature aberration in the meridional direction of the wide-angle state under the zoom lens function of this embodiment is better than that in the meridional direction of the wide-angle state under the zoom lens function of the first embodiment; 2. The longitudinal spherical aberration in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment; 3. The distortion aberration in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment; 4. The thickness difference between the optical axis and the circumferential region of the lens in this embodiment is smaller than that in the first embodiment, making it easier to manufacture and thus resulting in a higher yield.

[0071] Sixth Embodiment Please see Figure 17 This illustrates a sixth embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under zoom lens function in the sixth embodiment, please refer to... Figure 18A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 18A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 18A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 18A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 18B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 18B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 18B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 18BThe H part. The design of the sixth embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. In addition, this embodiment differs from the first embodiment in that the optical axis region 16 of the image side 12 of the first lens 10 is concave, the circumferential region 17 of the image side 12 of the first lens 10 is concave, the optical axis region 23 of the object side 21 of the second lens 20 is concave, the circumferential region 24 of the object side 21 of the second lens 20 is concave, the optical axis region 36 of the image side 32 of the third lens 30 is concave, the circumferential region 37 of the image side 32 of the third lens 30 is concave, the fourth lens 40 has positive refractive index, the optical axis region 43 of the object side 41 of the fourth lens 40 is convex, the circumferential region 44 of the object side 41 of the fourth lens 40 is convex, and the optical axis region 46 of the image side 42 of the fourth lens 40 is convex. The fifth lens 50 has a negative refractive index. The optical axis region 56 of the image-side surface 52 of the fifth lens 50 is concave, and the circumferential region 57 of the image-side surface 52 of the fifth lens 50 is concave. The optical axis region 63 of the object-side surface 61 of the sixth lens 60 is convex, and the circumferential region 64 of the object-side surface 61 of the sixth lens 60 is convex. The optical axis region 66 of the image-side surface 62 of the sixth lens 60 is concave, and the circumferential region 67 of the image-side surface 62 of the sixth lens 60 is concave. The optical axis region 73 of the object-side surface 71 of the seventh lens 70 is convex, and the circumferential region 77 of the image-side surface 72 of the seventh lens 70 is convex. The circumferential region 87 of the image-side surface 82 of the eighth lens 80 is concave, and the optical axis region 93 of the object-side surface 91 of the ninth lens 90 is convex.

[0072] Detailed optical data for the sixth embodiment are as follows: Figure 40 As shown in Figure 41, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 42 As shown. In this embodiment, ImgH=6.129mm; TTL=58.000mm; in zoom mode, fw=24.595mm; ft=34.925mm; Fnow=2.600; Fnot=3.146; HFOVw=14.185 degrees; HFOVt=9.955 degrees; in zoom mode, wide-angle mode, EFL=24.595mm, Fno=2.600, HFOV=14.185 degrees; in zoom mode, telephoto mode, EFL=34.925mm, Fno=3.146, HFOV=9.955 degrees.

[0073] In this embodiment, in the wide-angle state of the zoom lens, the longitudinal spherical aberration is ±0.07mm; the sagittal aberration is ±0.07mm; the meridional aberration is ±0.08mm; and the distortion aberration is ±1.6%. In the telephoto state of the zoom lens, the longitudinal spherical aberration is ±0.1mm; the sagittal aberration is ±0.08mm; the meridional aberration is ±0.2mm; and the distortion aberration is ±0.1%. This embodiment has the following advantages over the first embodiment: 1. The distortion aberration in the wide-angle state of the zoom lens function in this embodiment is better than that in the wide-angle state of the zoom lens function in the first embodiment; 2. The distortion aberration in the telephoto state of the zoom lens function in this embodiment is better than that in the telephoto state of the zoom lens function in the first embodiment.

[0074] Seventh Embodiment Please see Figure 19 This illustrates a seventh embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under zoom lens function in the seventh embodiment, please refer to... Figure 20A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 20A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 20A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 20A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 20B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 20B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 20B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 20BThe H part. The design of the seventh embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. In addition, this embodiment differs from the first embodiment in that the optical axis region 16 of the image side 12 of the first lens 10 is concave, the circumferential region 17 of the image side 12 of the first lens 10 is concave, the optical axis region 23 of the object side 21 of the second lens 20 is concave, the circumferential region 24 of the object side 21 of the second lens 20 is concave, the optical axis region 26 of the image side 22 of the second lens 20 is convex, the circumferential region 27 of the image side 22 of the second lens 20 is convex, the fourth lens 40 has positive refractive index, the optical axis region 43 of the object side 41 of the fourth lens 40 is convex, the circumferential region 44 of the object side 41 of the fourth lens 40 is convex, and the optical axis region 46 of the image side 42 of the fourth lens 40 is convex. Lens 6 is convex. Lens 50 has a negative refractive index. The optical axis region 56 of the image side surface 52 of lens 50 is concave. The circumferential region 57 of the image side surface 52 of lens 50 is concave. The optical axis region 63 of the object side surface 61 of lens 60 is convex. The circumferential region 64 of the object side surface 61 of lens 60 is convex. The optical axis region 66 of the image side surface 62 of lens 60 is concave. The circumferential region 67 of the image side surface 62 of lens 60 is concave. Lens 70 has a negative refractive index. The circumferential region 84 of the object side surface 81 of lens 80 is convex. The optical axis region 93 of the object side surface 91 of lens 90 is convex. The circumferential region 94 of the object side surface 91 of lens 90 is convex.

[0075] Detailed optical data for the seventh embodiment are as follows: Figure 43 As shown in Figure 44, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 45 As shown. In this embodiment, in zoom mode, ImgH=6.129mm; TTL=54.809mm; fw=21.985mm; ft=31.219mm; Fnow=2.450; Fnot=2.948; HFOVw=15.553 degrees; HFOVt=10.880 degrees; in zoom mode, wide-angle mode, EFL=21.985mm, Fno=2.450, HFOV=15.553 degrees; in zoom mode, telephoto mode, EFL=31.219mm, Fno=2.948, HFOV=10.880 degrees.

[0076] In this embodiment, under the wide-angle mode of the zoom lens, the longitudinal spherical aberration is ±0.045mm; the sagittal aberration is ±0.04mm; the meridional aberration is ±0.07mm; and the distortion aberration is ±0.2%. Under the telephoto mode of the zoom lens, the longitudinal spherical aberration is ±0.08mm; the sagittal aberration is ±0.08mm; the meridional aberration is ±0.08mm; and the distortion aberration is ±2.5%. This embodiment has the following advantages over the first embodiment: the distortion aberration under the wide-angle mode of the zoom lens function in this embodiment is better than that under the wide-angle mode of the zoom lens function in the first embodiment.

[0077] Eighth embodiment Please see Figure 21 This illustrates an eighth embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under zoom lens function of the eighth embodiment, please refer to... Figure 22A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 22A For Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 22A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 22A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 22B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 22B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 22B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 22B The H part. The design of the eighth embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. Furthermore, this embodiment differs from the first embodiment described above in that the first lens 10 has a negative refractive index, the optical axis region 16 of the image-side surface 12 of the first lens 10 is concave, the circumferential region 17 of the image-side surface 12 of the first lens 10 is concave, the second lens 20 has a positive refractive index, the optical axis region 23 of the object-side surface 21 of the second lens 20 is concave, the circumferential region 24 of the object-side surface 21 of the second lens 20 is concave, the optical axis region 26 of the image-side surface 22 of the second lens 20 is convex, the circumferential region 27 of the image-side surface 22 of the second lens 20 is convex, the sixth lens 60 has a negative refractive index, the seventh lens 70 has a negative refractive index, the optical axis region 83 of the object-side surface 81 of the eighth lens 80 is concave, and the circumferential region 97 of the image-side surface 92 of the ninth lens 90 is convex.

[0078] Detailed optical data for the eighth embodiment are as follows: Figure 46 As shown in Figure 47, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 48 As shown. In this embodiment, in zoom mode, ImgH=6.129mm; TTL=46.964mm; fw=16.060mm; ft=23.015mm; Fnow=2.200; Fnot=3.137; HFOVw=20.602 degrees; HFOVt=14.741 degrees; in zoom mode, wide-angle mode, EFL=16.060mm, Fno=2.200, HFOV=20.602 degrees; in zoom mode, telephoto mode, EFL=23.015mm, Fno=3.137, HFOV=14.741 degrees.

[0079] In this embodiment, in the wide-angle mode of the zoom lens, the longitudinal spherical aberration is ±0.02mm; the sagittal aberration is ±0.02mm; the meridional aberration is ±0.06mm; and the distortion aberration is ±3.0%. In the telephoto mode of the zoom lens, the longitudinal spherical aberration is ±0.05mm; the sagittal aberration is ±0.05mm; the meridional aberration is ±0.08mm; and the distortion aberration is ±1.4%. Compared with the first embodiment, this embodiment has the following advantages: 1. The longitudinal spherical aberration in the wide-angle state under the zoom lens function of this embodiment is better than that in the wide-angle state under the zoom lens function of the first embodiment; 2. The field curvature aberration in the sagittal direction in the wide-angle state under the zoom lens function of this embodiment is better than that in the wide-angle state under the zoom lens function of the first embodiment; 3. The field curvature aberration in the meridional direction in the wide-angle state under the zoom lens function of this embodiment is better than that in the meridional direction in the wide-angle state under the zoom lens function of the first embodiment; 4. The longitudinal spherical aberration in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment; 5. The distortion aberration in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment; 6. The thickness difference between the optical axis and the circumferential region of the lens in this embodiment is smaller than that in the first embodiment, making it easier to manufacture and thus resulting in a higher yield.

[0080] Ninth Embodiment Please see Figure 23 This illustrates a ninth embodiment of the zoom lens 1 of the present invention. For the longitudinal spherical aberration on the imaging plane 4 in the wide-angle state under zoom lens function of the ninth embodiment, please refer to... Figure 24A For Part A, field curvature aberration in the sagittal direction under wide-angle mode with zoom lens function, please refer to [reference needed]. Figure 24AFor Part B, field curvature aberration in the meridional direction under wide-angle mode with zoom lens function, please refer to [link / reference]. Figure 24A For part C, distortion and aberration in wide-angle mode under zoom lens function, please refer to [reference needed]. Figure 24A For the longitudinal spherical aberration on image plane 4 in part D and the telephoto state under zoom lens function, please refer to [reference needed]. Figure 24B For the field curvature aberration in the sagittal direction of the E section and the zoom lens function in telephoto mode, please refer to [reference needed]. Figure 24B For the F-section and the field curvature aberration in the meridional direction under zoom lens functionality, please refer to [reference needed]. Figure 24B For the G part and the distortion and aberration in the telephoto state under zoom lens function, please refer to Figure 24B The design of the ninth embodiment is similar to that of the first embodiment, except that the adjustable air gap, lens refractive index, lens radius of curvature, lens thickness, lens aspherical coefficient, or back focal length are different. In this embodiment, the difference from the first embodiment is that the first lens group G1 includes a first lens 10, a second lens 20, and a third lens 30; the second lens group G2 includes a fourth lens 40, a fifth lens 50, and a sixth lens 60; the aperture 2 in the first embodiment is located in the first adjustable air gap D1 of G34 between the third lens 30 and the fourth lens 40; the optical axis region 16 of the image-side surface 12 of the first lens 10 is planar, the circumferential region 17 of the image-side surface 12 of the first lens 10 is planar, and the optical axis region 33 of the object-side surface 31 of the third lens 30 is concave. The object-side surface 31 of lens 30 has a concave circumferential region 34. The fourth lens 40 has a positive refractive index, and the optical axis region 43 of the object-side surface 41 of the fourth lens 40 is convex. The circumferential region 44 of the object-side surface 41 of the fourth lens 40 is convex. The optical axis region 46 of the image-side surface 42 of the fourth lens 40 is convex. The fifth lens 50 has a negative refractive index, and the optical axis region 56 of the image-side surface 52 of the fifth lens 50 is concave. The optical axis region 63 of the object-side surface 61 of the sixth lens 60 is convex. The circumferential region 64 of the object-side surface 61 of the sixth lens 60 is convex. The seventh lens 70 has a negative refractive index. Furthermore, in this embodiment, the first lens 10 and the light-deflecting element 5 are integrated into a single optical element.

[0081] Detailed optical data for the ninth embodiment are as follows: Figure 49 As shown in Figure 50, the aspherical data includes the object distance in wide-angle and telephoto modes of the zoom lens, the first adjustable air gap D1, the second adjustable air gap D2, the third adjustable air gap D3, the effective focal length, the aperture value, the half-angle, and other optical data. Figure 51As shown. In this embodiment, in zoom mode, ImgH=6.129mm; TTL=48.000mm; fw=23.780mm; ft=33.979mm; Fnow=2.190; Fnot=3.265; HFOVw=14.271 degrees; HFOVt=10.100 degrees; in zoom mode, wide-angle mode, EFL=23.780mm, Fno=2.190, HFOV=14.271 degrees; in zoom mode, telephoto mode, EFL=33.979mm, Fno=3.265, HFOV=10.100 degrees.

[0082] In this embodiment, in the wide-angle mode of the zoom lens, the longitudinal spherical aberration is ±0.025mm; the sagittal aberration is ±0.04mm; the meridional aberration is ±0.12mm; and the distortion aberration is ±1.4%. In the telephoto mode of the zoom lens, the longitudinal spherical aberration is ±0.035mm; the sagittal aberration is ±0.035mm; the meridional aberration is ±0.05mm; and the distortion aberration is ±1.4%. Compared with the first embodiment, this embodiment has the following advantages: 1. The longitudinal spherical aberration in the wide-angle state under the zoom lens function of this embodiment is better than that in the wide-angle state under the zoom lens function of the first embodiment; 2. The distortion aberration in the wide-angle state under the zoom lens function of this embodiment is better than that in the wide-angle state under the zoom lens function of the first embodiment; 3. The longitudinal spherical aberration in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment; 4. The field curvature aberration in the sagittal direction in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment; 5. The distortion aberration in the telephoto state under the zoom lens function of this embodiment is better than that in the telephoto state under the zoom lens function of the first embodiment.

[0083] In addition, the important parameters in each embodiment are compiled in Figure 52 middle.

[0084] Various embodiments of the present invention provide a zoom lens 1 with good image quality. The zoom lens 1 of the present invention has only three lens groups, namely a first lens group G1, a second lens group G2, and a third lens group G3, and only one adjustable air gap, with the aperture 2 located within the first adjustable air gap D1. When the zoom lens 1 of the present invention zooms, the relative positions of adjacent lens groups change in at least one axis. The zoom lens 1 of the present invention can provide a zoom effect corresponding to an infinitely large object distance, a focusing effect corresponding to macro, and respectively produce a telephoto state corresponding to a telescopic state and a short focal length state corresponding to a wide-angle state. The three lens groups provide a lens with a small depth that can be installed in portable electronic products with limited thickness, enabling the zoom lens 1 to achieve a telephoto and wide-angle viewing angle range, as well as zoom and focusing effects. For example, the concave-convex design or parameter ratio of the lens surface shape can achieve the corresponding effects: 1. When the first lens 10 has a positive refractive index, it can effectively converge incident light rays from different angles and improve the marginal aberrations of the imaging plane. There are only three lens groups, and the relative positions of adjacent lens groups change in at least one axis, enabling the zoom lens 1 to achieve focal length variation. With a focal length of 1.700 ≥ 1 mgH / D11t21, the maximum image height is appropriately proportioned to the distance from the object-side surface 11 of the first lens 10 to the object-side surface 21 of the second lens 20, allowing the zoom lens 1 to possess good optical quality across different focal length ranges while maintaining a good lens length range. A preferred limitation is 1.700 ≥ 1 mgH / D11t21 ≥ 0.090.

[0085] 2. When the optical axis region 53 of the object-side surface 51 of the fifth lens 50 is concave, it can compensate for the decrease in optical quality of the second lens group G2 during zooming, enabling the zoom lens 1 to have good optical quality within different focal length ranges. Combined with the sixth lens 60 having a positive refractive index, it can effectively gather incident light rays from different angles and improve the edge aberrations of the imaging plane. There are only three lens groups, and the relative positions of adjacent lens groups change in at least one axis, allowing the zoom lens 1 to achieve focal length variation. With a maximum image height of 1.700 ≥ 1 mgH / D11t21, the distance between the object-side surface 11 of the first lens 10 and the object-side surface 21 of the second lens 20 is appropriately proportioned, enabling the zoom lens 1 to have good optical quality within different focal length ranges while maintaining a good lens length range. A preferred limitation is 1.700 ≥ 1 mgH / D11t21 ≥ 0.090.

[0086] 3. When the circumferential region 54 of the object-side surface 51 of the fifth lens 50 is concave, it can compensate for the decrease in optical quality of the second lens group G2 during zooming, enabling the zoom lens 1 to have good optical quality within different focal length ranges. The sixth lens 60, with its positive refractive index, effectively gathers incident light rays from different angles and improves edge aberrations of the imaging plane. With only three lens groups, and the relative positions of adjacent lens groups changing in at least one axis, the zoom lens 1 achieves the effect of focal length variation. Combined with 1.700 ≥ 1 mgH / D11t21, the maximum image height is appropriately proportioned to the distance from the object-side surface 11 of the first lens 10 to the object-side surface 21 of the second lens 20, ensuring good optical quality of the zoom lens 1 within different focal length ranges while maintaining a good lens length range. A preferred limitation is 1.700 ≥ 1 mgH / D11t21 ≥ 0.090.

[0087] 4. The zoom lens 1 of the present invention may have a reversing element 5, such as a prism, a mirror, or other suitable reflective element. For example, a reversing element 5 is located between the first lens 10 and the second lens 20; a reversing element with refractive power may be the first lens 10. By adjusting the position of the reversing element 5, the overall size of the lens assembly can be kept from being too large, making it easier to meet the requirements of being thin, light, and compact, while also maintaining assembly yield.

[0088] 5. The zoom lens 1 of the present invention has three lens groups, which interact to achieve the zoom effect and effectively control the size. The first lens group G1 contains at least two lenses, which can effectively gather incident light from different angles. The second lens group G2 contains at least two lenses and up to four lenses. The relative position of the second lens group G2 changes in at least one axis, so that the zoom lens 1 can achieve the effect of changing the focal length. The third lens group G3 contains at least two lenses and up to three lenses. The relative position of the third lens group G3 changes in at least one axis, which can compensate for the optical quality degradation caused by the second lens group G2 during zooming.

[0089] 6. When the zoom aperture, zoom half-angle, and lens size of the present invention satisfy the following ranges or proportional relationships, they can better improve the distortion and field curvature aberration of the optical imaging system.

[0090] 25,000 ≥ TTL (Fnow + Fnot) / fw ≥ 3.000, with an optimal range of 17.000 ≥ TTL. (Fnow + Fnot) / fw ≥ 9.000; 1.500 ≥ TTL / (Fnow) The optimal range is 1.500 ≥ TTL / (Fnow). fw) ≥ 0.700; 1.100 ≥ TTL / (Fnow) ft), the optimal range is 1.100≧TTL / (Fnow) ft) ≥ 0.500; 0.450 ≥ (Tmin) Fnot) / D11t21, the optimal range is 0.450≧(Tmin) Fnot) / D11t21≧0.060; 0.350 ≥ (Tmin) Fnow) / D11t21, the optimal range is 0.350≧(Tmin) Fnow) / D11t21≧0.040; (ft+ImgH) / (Fnot) Tmin) ≥ 9.000, with a preferred range of 32.000 ≥ (ft + ImgH) / (Fnot) Tmin) ≥ 9.000; 0.500 / degree≧TTL / (HFOVt The optimal range is 0.500 / degree ≥ TTL / (HFOVt). fw) ≥ 0.100 / degree; 0.400 / degree≧TTL / (HFOVt The optimal range is 0.400 / degree ≥ TTL / (HFOVt). ft)≧0.100 / degree; 1.500 degrees≧Tmin (HFOVt + HFOVw) / ft, with an optimal range of 1.500 degrees ≥ Tmin. (HFOVt+HFOVw) / ft≧0.200 / degree; 5.500 degrees≧Tmin (HFOVt + HFOVw) / ImgH, the optimal range is 5.500 / degree ≥ Tmin (HFOVt+HFOVw) / ImgH≧1.000 degrees.

[0091] 7. The preferred range is when the lens material meets the following limitations, it can effectively suppress chromatic aberration and spherical aberration generated during focal length changes, so that the zoom lens 1 can have good resolution in different focal length ranges.

[0092] υ2 υ3 / υ8≧50.000, the preferred range is 261.000≧υ2 υ3 / υ8≧50.000.

[0093] υ3 υ4 / υ1 ≥ 33.000, with a preferred range of 195.000 ≥ υ3. υ4 / υ1≧33.000.

[0094] 8. To ensure image quality, and taking into account the ease of manufacturing, the distance between lenses or the thickness of lenses is appropriately shortened or maintained at a certain ratio. When the numerical limits of the following conditional formula are met, the embodiments of the present invention can have a better configuration.

[0095] TTL / ImgH ≥ 6.500, with a preferred range of 20.000 ≥ TTL / ImgH ≥ 6.500; 2.000≧D71t92 / D11t21, with a preferred range of 2.000≧D71t92 / D11t21≧0.200; 0.180 ≥ Tmin / D11t21, with a preferred range of 0.180 ≥ Tmin / D11t21 ≥ 0.020; 9.800≧ft / D11t21, with a preferred range of 9.800≧ft / D11t21≧0.900; 7.000≧fw / D11t21, with a preferred range of 7.000≧fw / D11t21≧0.600; 15.800≧(ft+fw) / D11t21, the optimal range is 15.800≧(ft+fw) / D11t21≧1.500.

[0096] In addition, any combination of parameters in the embodiments can be selected to increase lens constraints, thereby facilitating lens design with the same architecture as the present invention.

[0097] In view of the unpredictability of optical system design, under the framework of the present invention, meeting the above conditions can better enable the present invention to reduce the aperture value, reduce the size, maintain good optical quality during zooming, or improve the assembly yield and improve the shortcomings of the prior art. Furthermore, the use of plastic material for the lens in the embodiments of the present invention can further reduce the lens weight and save costs.

[0098] The numerical ranges, including the maximum and minimum values, obtained from the combined proportional relationships of the optical parameters disclosed in the various embodiments of the present invention can all be implemented accordingly.

[0099] The embodiments of this invention disclose optical parameters including, but not limited to, focal length, thickness, and Abbe number (Vd). For example, the present invention discloses an optical parameter A and an optical parameter B in various embodiments. The specific explanations of the ranges covered by these optical parameters, the comparison relationships between the optical parameters, and the conditional ranges covered by the multiple embodiments are as follows: (1) The range covered by the optical parameters, for example: α2≦A≦α1 or β2≦B≦β1, where α1 is the maximum value of optical parameter A in multiple embodiments, α2 is the minimum value of optical parameter A in multiple embodiments, β1 is the maximum value of optical parameter B in multiple embodiments, and β2 is the minimum value of optical parameter B in multiple embodiments.

[0100] (2) Comparison of optical parameters, for example: A is greater than B or A is less than B.

[0101] (3) The conditional range covered by multiple embodiments, specifically, the combination or proportional relationships obtained by possible calculations of a plurality of optical parameters of the same embodiment, defined as E. E may be, for example: A+B, AB, A / B, or A... B or (A) B) 1 / 2 E satisfies the condition E≦γ1 or E≧γ2 or γ2≦E≦γ1, where γ1 and γ2 are the values ​​obtained by calculation of optical parameter A and optical parameter B in the same embodiment, and γ1 is the maximum value in multiple embodiments of the present invention, and γ2 is the minimum value in multiple embodiments of the present invention.

[0102] The range covered by the aforementioned optical parameters, the comparative relationships between the optical parameters, and the maximum, minimum, and numerical ranges within these conditions are all features upon which the present invention can be implemented, and all fall within the scope disclosed in the present invention. The above are merely illustrative examples and should not be construed as limiting.

[0103] All embodiments of the present invention are feasible, and some feature combinations can be extracted from the same embodiment. Compared with the prior art, these feature combinations can achieve unexpected effects. These feature combinations include, but are not limited to, combinations of features such as surface shape, refractive index, and conditional features. The disclosure of the embodiments of the present invention is a specific example to illustrate the principles of the present invention and should not be limited to the disclosed embodiments. Furthermore, the embodiments and their accompanying drawings are only for illustrative purposes and are not limited thereto.

[0104] The foregoing outlines the features of several embodiments, enabling those skilled in the art to fully understand the various aspects of the invention. Those skilled in the art should recognize that the invention provides a basis for designing or modifying other processes and structures to achieve substantially the same functionality and / or results as the embodiments described above. Furthermore, such equivalent configurations do not depart from the spirit and scope of the invention, and various changes, substitutions, and modifications can be made without departing from that spirit and scope.

Claims

1. A zoom lens, characterized in that: Along an optical axis from the object side to the image side, the zoom lens sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Each of the first to the ninth lenses includes an object-side surface facing the object side and allowing imaging light to pass through, and an image-side surface facing the image side and allowing imaging light to pass through. The zoom lens has only the above nine lenses, and the lens groups formed by these nine lenses are only three in number. The relative positions of adjacent lens groups change in at least one axis, so that the zoom lens has a wide-angle state and a telephoto state. The first lens has a positive refractive index; Wherein, ImgH is a maximum image height of the zoom lens, and D11t21 is the distance on the optical axis from the object side of the first lens to the object side of the second lens, satisfying the following condition: 1.700≧ImgH / D11t21.

2. A zoom lens, characterized in that: Along an optical axis from the object side to the image side, the zoom lens sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Each of the first to the ninth lenses includes an object-side surface facing the object side and allowing an imaging ray to pass through, and an image-side surface facing the image side and allowing the imaging ray to pass through. The zoom lens has only the above nine lenses, and the lens groups formed by these nine lenses are only three in number. The relative positions of adjacent lens groups change in at least one axis, so that the zoom lens has a wide-angle state and a telephoto state. The optical axis region on the side of the fifth lens is concave; The sixth lens has a positive refractive index. Wherein, ImgH is a maximum image height of the zoom lens, and D11t21 is the distance on the optical axis from the object side of the first lens to the object side of the second lens, satisfying the following condition: 1.700≧ImgH / D11t21.

3. A zoom lens, characterized in that: Along an optical axis from the object side to the image side, the zoom lens sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Each of the first to the ninth lenses includes an object-side surface facing the object side and allowing an imaging ray to pass through, and an image-side surface facing the image side and allowing the imaging ray to pass through. The zoom lens has only the above nine lenses, and the lens groups formed by these nine lenses are only three in number. The relative positions of adjacent lens groups change in at least one axis, so that the zoom lens has a wide-angle state and a telephoto state. A circumferential region on the side of the object of the fifth lens is concave; The sixth lens has a positive refractive index. Wherein, ImgH is a maximum image height of the zoom lens, and D11t21 is the distance on the optical axis from the object side of the first lens to the object side of the second lens, satisfying the following condition: 1.700≧ImgH / D11t21.

4. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where υ2 is the Vd Abbe number of the second lens, υ3 is the Vd Abbe number of the third lens, and υ8 is the Vd Abbe number of the eighth lens, and the zoom lens satisfies the following condition: υ2 υ3 / υ8≧50.

000.

5. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where υ3 is the Vd Abbe number of the third lens, υ4 is the Vd Abbe number of the fourth lens, and υ1 is the Vd Abbe number of the first lens, and the zoom lens satisfies the following condition: υ3 υ4 / υ1≧33.

000.

6. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where TTL is the distance from the object side of the first lens to an imaging surface on the optical axis, and the zoom lens satisfies the following condition: TTL / ImgH≧6.

500.

7. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where D71t92 is the distance on the optical axis from the object side of the seventh lens to the image side of the ninth lens, and the zoom lens satisfies the following condition: 2.000≧D71t92 / D11t21.

8. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where Tmin is the minimum thickness of the nine lenses from the first lens to the ninth lens on the optical axis, and the zoom lens satisfies the following condition: 0.180 ≧ Tmin / D11t21.

9. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where ft is the effective focal length of the zoom lens in the telephoto state, and the zoom lens satisfies the following condition: 9.800≧ft / D11t21.

10. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where fw is the effective focal length of the zoom lens in the wide-angle state, and the zoom lens satisfies the following condition: 7.000≧fw / D11t21.

11. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where ft is the effective focal length of the zoom lens in the telephoto state, fw is the effective focal length of the zoom lens in the wide-angle state, and the zoom lens satisfies the following condition: 15.800≧(ft+fw) / D11t21.

12. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where TTL is the distance from the object-side surface of the first lens to an imaging plane on the optical axis, Fnow is the aperture value of the zoom lens in the wide-angle state, Fnot is the aperture value of the zoom lens in the telephoto state, fw is the effective focal length of the zoom lens in the wide-angle state, and the zoom lens satisfies the following condition: 25.000 ≥ TTL (Fnow+Fnot) / fw≧3.

000.

13. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where TTL is the distance from the object-side surface of the first lens to an imaging plane on the optical axis, Fnow is the aperture value of the zoom lens in the wide-angle state, fw is the effective focal length of the zoom lens in the wide-angle state, and the zoom lens satisfies the following condition: 1.500 ≥ TTL / (Fnow) fw).

14. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where TTL is the distance from the object-side surface of the first lens to an imaging plane on the optical axis, Fnow is the aperture value of the zoom lens in the wide-angle state, ft is the effective focal length of the zoom lens in the telephoto state, and the zoom lens satisfies the following condition: 1.100 ≥ TTL / (Fnow) ft).

15. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where Tmin is the minimum thickness of the nine lenses (from the first to the ninth) along the optical axis, Fnot is the aperture value of the zoom lens in the telephoto state, and the zoom lens satisfies the following condition: 0.450 ≥ (Tmin) Fnot) / D11t21).

16. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where Tmin is the minimum thickness of the nine lenses (from the first to the ninth) along the optical axis, Fnow is the aperture value of the zoom lens in the wide-angle state, and the zoom lens satisfies the following condition: 0.350 ≥ (Tmin) Fnow) / D11t21).

17. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where ft is the effective focal length of the zoom lens in the telephoto state, Fnot is the aperture value of the zoom lens in the telephoto state, and Tmin is the minimum thickness of the nine lenses from the first lens to the ninth lens on the optical axis, and the zoom lens satisfies the following condition: (ft + ImgH) / (Fnot) Tmin) ≥ 9.

000.

18. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where TTL is the distance from the object-side surface of the first lens to an imaging surface on the optical axis, HFOVt is the half angle of view of the zoom lens in the telephoto state, fw is the effective focal length of the zoom lens in the wide-angle state, and the zoom lens satisfies the following condition: 0.500 / degree ≥ TTL / (HFOVt) fw).

19. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where TTL is the distance from the object-side surface of the first lens to an imaging surface on the optical axis, HFOVt is the half angle of view of the zoom lens in the telephoto state, ft is the effective focal length of the zoom lens in the telephoto state, and the zoom lens satisfies the following condition: 0.400 / degree ≥ TTL / (HFOVt) ft).

20. The zoom lens as described in claim 1, 2, or 3, characterized in that: Where Tmin is the minimum thickness of the nine lenses (from the first to the ninth) on the optical axis, HFOVt is the half-angle of the zoom lens in the telephoto state, HFOVw is the half-angle of the zoom lens in the wide-angle state, and ft is the effective focal length of the zoom lens in the telephoto state. The zoom lens also satisfies the following condition: 1.500 degrees ≥ Tmin. (HFOVt+HFOVw) / ft.

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