Optical imaging lens

Abstract

This invention discloses an optical imaging lens comprising, in order from the object side to the image side, a first, second, third, fourth, fifth, and sixth lens. The circumferential region of the object-side surface of the third lens is convex, and the circumferential region of the image-side surface of the third lens is concave. The optical axis region of the object-side surface of the fourth lens is convex, and the circumferential region of the object-side surface of the sixth lens is convex, as is the optical axis region of the image-side surface of the sixth lens. Furthermore, it satisfies ΔSAG11≦0.300µm, HFOV / TTL≧17.000 degrees / mm, and CRAih≦30.000 degrees, thus facilitating the design of multi-lens zoom components. ΔSAG11 represents the peak-to-valley value of the object-side surface of the first lens, HFOV represents the half-field of view of the optical imaging lens, TTL represents the system length of the optical imaging lens, and CRAih represents the principal ray angle of the optical imaging lens at its maximum image height.

Description

Technical Field

[0001] This invention relates to an optical imaging lens, and more particularly to a six-element optical imaging lens employing six lenses. Background Technology

[0002] Portable electronic products, such as mobile phones, cameras, tablets, personal digital assistants (PDAs), and head-mounted displays, are constantly evolving in specifications, and their key components—optical imaging lenses—are also becoming increasingly diversified. The applications of portable electronic products are no longer limited to capturing images and videos; they also include environmental monitoring, dashcam photography, augmented reality (AR), virtual reality (VR), and mixed reality (MR). Furthermore, with advancements in image sensing technology, consumers are demanding higher image quality. Therefore, the design of optical imaging lenses not only pursues a slim and lightweight design with good image quality but also seeks features such as shorter focal lengths and wider field of view, which are beneficial for multi-lens zoom applications.

[0003] For current multi-lens multifocal lens module designs, the significant difference in system length and XY plane dimensions between short-focal-length ultra-wide-angle lenses and telephoto lenses makes it difficult to integrate the lens system length and sensor into a single module. Therefore, how to design a system length, XY plane dimensions, and sensor that match and integrate a short-focal-length ultra-wide-angle lens with a telephoto lens into a multifocal lens module is a problem that the industry needs to solve. Summary of the Invention

[0004] Therefore, one objective of the present invention is to provide an optical imaging lens that is thin and light in shape and has good imaging quality. Preferably, the optical imaging lens of the present invention can have a smaller focal length and a larger field of view, which is beneficial to the design of multi-lens zoom components.

[0005] According to an embodiment of the present invention, an optical imaging lens is provided, which includes six lenses along an optical axis from an object side to an image side, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence. Each of the first lens to the sixth lens includes an object side facing the object side and allowing imaging light to pass through, and an image side facing the image side and allowing imaging light to pass through.

[0006] For ease of representation of the parameters referred to in this invention, the following definitions apply in this specification and drawings: T1 represents the thickness of the first lens on the optical axis; T2 represents the thickness of the second lens on the optical axis; T3 represents the thickness of the third lens on the optical axis; T4 represents the thickness of the fourth lens on the optical axis; T5 represents the thickness of the fifth lens on the optical axis; T6 represents the thickness of the sixth lens on the optical axis; G12 represents the distance on the optical axis from the image side of the first lens to the object side of the second lens, i.e., the air gap on the optical axis between the first and second lenses; G23 represents the distance on the optical axis from the image side of the second lens to the object side of the third lens, i.e., the air gap on the optical axis between the second and third lenses; G34 represents the distance on the optical axis from the image side of the third lens to the object side of the fourth lens. The distance on the optical axis refers to the air gap between the third and fourth lenses on the optical axis; G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, i.e., the air gap between the fourth and fifth lenses on the optical axis; G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens, i.e., the air gap between the fifth and sixth lenses on the optical axis; G6F represents the distance on the optical axis from the image side of the sixth lens to the object side of the filter; TTF is the thickness of the filter on the optical axis; GFP represents the distance on the optical axis from the image side of the filter to the imaging plane; AAG represents the sum of the two air gaps on the optical axis from the first to the sixth lens, i.e., the sum of G12, G23, G34, G45, and G56. And; ALT represents the total thickness of the six lenses from the first to the sixth lens along the optical axis, i.e., the sum of T1, T2, T3, T4, T5, and T6; TL represents the distance along the optical axis from the object-side surface of the first lens to the image-side surface of the sixth lens; TTL represents the system length of the optical imaging lens, i.e., the distance along the optical axis from the object-side surface of the first lens to the image plane; D11t21 represents the distance along the optical axis from the object-side surface of the first lens to the object-side surface of the second lens; D22t32 represents the distance along the optical axis from the image-side surface of the second lens to the image-side surface of the third lens; D41t51 represents the distance along the optical axis from the object-side surface of the fourth lens to the object-side surface of the fifth lens; D51t61 represents the distance along the optical axis from the object-side surface of the fifth lens to the object-side surface of the sixth lens. D22t41 represents the distance on the optical axis from the image-side surface of the second lens to the object-side surface of the fourth lens; D21t31 represents the distance on the optical axis from the object-side surface of the second lens to the object-side surface of the third lens; D31t41 represents the distance on the optical axis from the object-side surface of the third lens to the object-side surface of the fourth lens; BFL represents the back focal length of the optical imaging lens, which is the distance on the optical axis from the image-side surface of the sixth lens to the imaging plane, i.e., the sum of G6F, TTF, and GFP; ImgH represents the maximum image height of the optical imaging lens; HFOV represents the half field of view (half of the maximum angle of view) of the optical imaging lens; EFL represents the effective focal length of the optical imaging lens; f1 represents the focal length of the first lens; f2 represents the focal length of the second lens; f3 represents the focal length of the third lens.f4 represents the focal length of the fourth lens; f5 represents the focal length of the fifth lens; f6 represents the focal length of the sixth lens; n1 represents the nd refractive index of the first lens; n2 represents the nd refractive index of the second lens; n3 represents the nd refractive index of the third lens; n4 represents the nd refractive index of the fourth lens; n5 represents the nd refractive index of the fifth lens; n6 represents the nd refractive index of the sixth lens; V1 represents the Vd Abbe number of the first lens; V2 represents the Vd Abbe number of the second lens; V3 represents the Vd Abbe number of the third lens; V4 represents the Vd Abbe number of the fourth lens; V5 represents the Vd Abbe number of the fifth lens; V6 represents the Vd Abbe number of the sixth lens; Fno represents the aperture value of the optical imaging lens; EPD represents the entrance pupil diameter of the optical imaging lens. Diameter, equal to the effective focal length of the optical imaging lens divided by the aperture value; Sag11 represents the Sag value of the object-side surface of the first lens at the optical boundary; ΔSAG11 represents the difference between the highest and lowest points of the object-side surface of the first lens. When the object-side surface of the first lens is spherical, ΔSAG11 is also equal to |Sag11|; D11 represents the distance formed by the two points with the maximum straight-line distance formed by the outermost edge contour of the object-side surface of the first lens, which is the size value formed by the two points with the maximum straight-line distance formed by the outermost edge contour of the object-side surface of the first lens. In other words, it is twice the length of the optical boundary of the object-side surface of the first lens; CRAih represents the principal ray angle of the optical imaging lens at the maximum image height.

[0007] Please note that the lens material parameters disclosed in the optical parameter tables of this invention are in the international glass code format using the nd refractive index and Vd Abbe number, so that those skilled in the art can understand 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 parameter tables of each embodiment are calculated based on the refractive index of the band in which the optical system is implemented. Since the primary wavelength of the embodiments of this invention is 555 nm, the focal length values ​​of this invention are calculated based on the refractive index of the material at 555 nm.

[0008] According to the first aspect of the present invention, the circumferential region of the object side of the third lens is convex and the circumferential region of the image side of the third lens is concave, the optical axis region of the object side of the fourth lens is convex, the circumferential region of the object side of the sixth lens is convex and the optical axis region of the image side of the sixth lens is convex, the optical imaging lens has only the aforementioned six lenses, and satisfies condition (1): ΔSAG11≦0.300µm, condition (2): HFOV / TTL≧17.000 degrees / mm, and condition (3): CRAih≦30.000 degrees.

[0009] According to the second aspect of the present invention, the circumferential region of the object side of the third lens is convex and the circumferential region of the image side of the third lens is concave, the optical axis region of the object side of the fourth lens is convex, the circumferential region of the object side of the sixth lens is convex and the optical axis region of the image side of the sixth lens is convex, the optical imaging lens has only the aforementioned six lenses, and satisfies condition (1), condition (4): Sag11 / (D11 / 2)≦0.035%, condition (5): HFOV / (TTL+D11 / 2)≧12.700 degrees / mm, and condition (3).

[0010] According to the third aspect of the present invention, the optical imaging lens provided has an object-side optical axis region that is convex and an image-side optical axis region that is concave, an object-side optical axis region that is convex, an object-side circumferential region that is convex and an image-side optical axis region that is convex. The optical imaging lens has only the aforementioned six lenses and satisfies conditions (1), (4), (5), and (3).

[0011] Secondly, the present invention can selectively control the aforementioned parameters to make the optical imaging lens more satisfied with at least one of the following conditions: (EFL+T1) / (G45+G56)≦10.500 conditional expression (6); (EFL+T6) / (G45+G56)≦11.000 conditional (7); (EFL+G23) / (G45+G56)≦13.000 condition (8); (T1+G23) / (G34+G45+G56)≦3.300 Conditional expression (9); (T1+T6) / (G34+G45+G56)≦4.500 Conditional expression (10); (T1+G23) / (G34+G56)≦5.100 Conditional expression (11); D11t21 / T2≦3.500 conditional expression (12); D22t32 / T2≦4.700 conditional expression (13); D11t21 / ImgH≦1.500 conditional expression (14); Condition (15): D22t41 / (T2+T4)≦2.000 (T6+BFL) / D51t61≦7.800Conditional expression (16); D21t31 / (G45+G56)≦7.900 conditional expression (17); D31t41 / (G45+G56)≦5.700 condition (18); (T4+T5) / (G45+G56)≦9.800 Conditional expression (19); (D11+EPD) / ImgH≦4.000 Conditional equation (20); HFOV EFL / (ALT+BFL)≧16.000 degrees condition (21); Condition (22) for D11t21 / D41t51≦2.000; and / or 1.100≦T6 / D51t61≦3.800 conditional expression (23).

[0012] The exemplary limiting conditions listed above can be selectively combined and applied in varying numbers to embodiments of the present invention, and are not limited thereto. In implementing the present invention, in addition to the aforementioned conditions, further details such as the arrangement of concave and convex surfaces, refractive index variations, selection of various materials, or other detailed structures can be designed for a single lens or, more broadly, multiple lenses to enhance control over system performance and / or resolution. It should be noted that these details should be selectively combined and applied to other embodiments of the present invention, provided there is no conflict.

[0013] As can be seen from the above, the optical imaging lens of the present invention not only has a slim and lightweight appearance and good imaging quality, but also preferably provides features such as a smaller focal length and a larger field of view, which are beneficial to the design of multi-lens zoom components. Attached Figure Description

[0014] Figure 1 This diagram shows a cross-sectional view of a lens according to one embodiment of the present invention. Figure 2 Draw a schematic diagram showing the relationship between the lens surface shape and the focal point of the light rays; Figure 3 Draw a diagram showing the surface shape of the lens region and the relationship between the region boundaries in Example 1; Figure 4Draw a diagram showing the surface shape of the lens region and the relationship between the region boundaries in Example 2; Figure 5 Draw a diagram showing the surface shape of the lens region and the relationship between the region boundaries in Example 3; Figure 6 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a first embodiment of the present invention. Figure 7 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to a first embodiment of the present invention. Figure 8 This displays detailed optical data of each lens of the optical imaging lens according to the first embodiment of the present invention; Figure 9 Displaying aspherical data of an optical imaging lens according to a first embodiment of the present invention; Figure 10 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a second embodiment of the present invention. Figure 11 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to a second embodiment of the present invention. Figure 12 This displays detailed optical data for each lens of the optical imaging lens according to the second embodiment of the present invention; Figure 13 Displaying aspherical data of an optical imaging lens according to a second embodiment of the present invention; Figure 14 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a third embodiment of the present invention. Figure 15 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to a third embodiment of the present invention. Figure 16 This displays detailed optical data for each lens of the optical imaging lens according to the third embodiment of the present invention; Figure 17 Displaying aspherical data of an optical imaging lens according to a third embodiment of the present invention; Figure 18 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a fourth embodiment of the present invention. Figure 19 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to the fourth embodiment of the present invention. Figure 20 This displays detailed optical data for each lens of the optical imaging lens according to the fourth embodiment of the present invention; Figure 21Displaying aspherical data of an optical imaging lens according to a fourth embodiment of the present invention; Figure 22 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a fifth embodiment of the present invention. Figure 23 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to the fifth embodiment of the present invention. Figure 24 This displays detailed optical data for each lens of the optical imaging lens according to the fifth embodiment of the present invention; Figure 25 Displaying aspherical data of an optical imaging lens according to a fifth embodiment of the present invention; Figure 26 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a sixth embodiment of the present invention. Figure 27 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to the sixth embodiment of the present invention. Figure 28 This displays detailed optical data for each lens of the optical imaging lens according to the sixth embodiment of the present invention; Figure 29 Displaying aspherical data of an optical imaging lens according to a sixth embodiment of the present invention; Figure 30 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a seventh embodiment of the present invention. Figure 31 This diagram shows the longitudinal spherical aberration and various aberrations of an optical imaging lens according to the seventh embodiment of the present invention. Figure 32 This displays detailed optical data for each lens of the optical imaging lens according to the seventh embodiment of the present invention; Figure 33 Displaying aspherical data of an optical imaging lens according to a seventh embodiment of the present invention; Figure 34 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to the eighth embodiment of the present invention. Figure 35 This diagram shows the longitudinal spherical aberration and various aberrations of the optical imaging lens according to the eighth embodiment of the present invention. Figure 36 This displays detailed optical data for each lens of the optical imaging lens according to the eighth embodiment of the present invention; Figure 37 Displaying aspherical data of the optical imaging lens according to the eighth embodiment of the present invention; Figures 38-41A comparison table listing the numerical values ​​of the parameter combinations in the above eight embodiments is provided.

[0015] Explanation of reference numerals in the attached figures: 1, 2, 3, 4, 5, 6, 7, 8: Optical imaging lenses; 100, 200, 300, 400, 500: Lenses; 130: Assembly section; 211, 212: parallel light rays; STO: aperture; L1: First lens; L2: Second lens; L3: Third lens; L4: Fourth lens; L5: Fifth lens; L6: Sixth lens; TF: Filter; CG: Protective Glass; IMA: Imaging Surface; 110, 410, 510, L1A1, L2A1, L3A1, L4A1, L5A1, L6A1, TFA1, CGA1: Side view of the object; 120, 320, L1A2, L2A2, L3A2, L4A2, L5A2, L6A2, TFA2, CGA2: side view; Z1, L1A1C, L1A2C, L2A1C, L2A2C, L3A1C, L3A2C, L4A1C, L4A2C, L5A1C, L5A2C, L6A1C, L6A2C: Optical axis region; Z2, L1A1P, L1A2P, L2A1P, L2A2P, L3A1P, L3A2P, L4A1P, L4A2P, L5A1P, L5A2P, L6A1P, L6A2P: Circular region; A1: Object side; A2: Image side; 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: Principal ray; Lm: Peripheral ray; EL: Extension line; Z3: Relay area; M, R: Intersection points. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The elements in the drawings are not drawn to scale, and similar element symbols are generally used to represent similar elements.

[0017] 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.

[0018] The optical system described in this specification includes at least one lens that receives imaging rays incident on the optical system, ranging from parallel to the optical axis to within a half-field-of-view (HFOV) angle 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 refractive index (or a 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.

[0019] 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).

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The optical imaging lens of this invention comprises six lenses arranged along an optical axis from the object side to the image side, sequentially including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each of the first to sixth 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. By designing the detailed features of each lens and satisfying a specific range of parameter combinations, the optical imaging lens of this invention not only achieves a slim profile and good image quality, but also provides features such as a smaller focal length and a wider field of view, which are beneficial for multi-lens zoom element designs.

[0032] When the optical imaging lens satisfies condition (1), and is combined with the object-side circumferential region of the third lens being convex, the image-side circumferential region of the third lens being concave, and the optical axis region of the image-side of the sixth lens being convex, and also satisfies condition (2), it is advantageous to use the first lens as both a light-collecting plate and a protective glass, thereby reducing the size of the lens in the Z direction and increasing the half-angle of view. Further, by combining the object-side optical axis region of the fourth lens with a convex surface, the object-side circumferential region of the sixth lens with a convex surface, and adding the constraint of satisfying condition (3), it is advantageous to increase the relative brightness of the sensor circumference and improve the imaging quality of the image circumferential region. The preferred limits for condition (1) are 0.000µm ≤ ΔSAG11 ≤ 0.300µm, the preferred limits for condition (2) are 31 degrees / mm ≥ HFOV / TTL ≥ 17.000 degrees / mm, and the preferred limits for condition (3) are 21.000 degrees ≤ CRAih ≤ 30.000 degrees. Further, having the first lens with a negative refractive index and cooperating with the fourth lens with a positive refractive index would be beneficial for shortening the system's focal length.

[0033] When the optical imaging lens satisfies conditions (1) and (4), and the object-side circumferential region of the third lens is convex, the image-side circumferential region of the third lens is concave, and the optical axis region of the image-side of the sixth lens is convex, and condition (5) is also satisfied, it is beneficial to use the first lens as both a light-collecting plate and a protective glass, thereby reducing the size of the lens in the X, Y, and Z directions and increasing the half-angle of view. Furthermore, when the object-side optical axis region of the fourth lens is convex, and the object-side circumferential region of the sixth lens is convex, and condition (3) is also satisfied, it is beneficial to increase the relative brightness of the sensor circumference and improve the imaging quality of the image circumferential region. The preferred limitation for condition (1) is 0.000µm≦ΔSAG11≦0.300µm, the preferred limitation for condition (5) is 24.000 degrees / mm≧HFOV / (TTL+D11 / 2)≧12.700 degrees / mm, and the preferred limitation for condition (3) is 21.000 degrees≦CRAih≦30.000 degrees. Further, having the first lens with a negative refractive index and cooperating with the fourth lens to have a positive refractive index would be beneficial for shortening the system's focal length.

[0034] When the optical imaging lens satisfies conditions (1) and (4), and the optical axis region of the object side of the third lens is convex, the optical axis region of the image side of the third lens is concave, and the optical axis region of the image side of the sixth lens is convex, and condition (5) is also satisfied, it is beneficial to use the first lens as both a light-collecting plate and a protective glass, thereby reducing the size of the lens in the X, Y, and Z directions and increasing the half-angle of view. Furthermore, when the optical axis region of the object side of the fourth lens is convex, and the circumferential region of the object side of the sixth lens is convex, and the constraint of satisfying condition (3) is added, it is beneficial to increase the relative brightness of the sensor circumference and improve the imaging quality of the image circumferential region. The preferred limitation for condition (1) is 0.000µm≦ΔSAG11≦0.300µm, the preferred limitation for condition (5) is 24.000 degrees / mm≧HFOV / (TTL+D11 / 2)≧12.700 degrees / mm, and the preferred limitation for condition (3) is 21.000 degrees≦CRAih≦30.000 degrees. Further, having the first lens with a negative refractive index and cooperating with the fourth lens to have a positive refractive index would be beneficial for shortening the system's focal length.

[0035] When the optical imaging lens of the present invention further satisfies more of the following surface features, it is beneficial to reduce longitudinal spherical aberration in different fields of view. The surface features include: the optical axis region of the object side of the second lens is convex, the circumferential region of the object side of the second lens is convex, the optical axis region of the image side of the second lens is concave, the circumferential region of the image side of the second lens is concave, the optical axis region of the image side of the fifth lens is concave, and the optical axis region of the object side of the sixth lens is concave, etc.

[0036] When the optical imaging lens of the present invention further satisfies more of the following surface features, it is beneficial to reduce field curvature in different fields of view. The surface features include: the circumferential region of the image side of the fifth lens is concave, the circumferential region of the image side of the sixth lens is convex, etc.

[0037] When the optical imaging lens of the present invention further satisfies condition (21), it is beneficial to shorten the focal length and increase the field of view while reducing the lens thickness and the system back focal length. The preferred limitation is 24,000 degrees ≥ HFOV. EFL / (ALT+BFL)≧16.000 degrees.

[0038] When the optical imaging lens of the present invention further satisfies conditions (6) to (8), it will help maintain an appropriate value for the effective focal length and various optical parameters, avoiding any parameter being too large and thus hindering the reduction of the size of the XY plane, or any parameter being too small and thus affecting assembly or increasing the difficulty of manufacturing. Preferably, it can further satisfy 3.600≦(EFL+T1) / (G45+G56)≦10.500, 4.400≦(EFL+T6) / (G45+G56)≦11.000, and 3.500≦(EFL+G23) / (G45+G56)≦13.000.

[0039] When the optical imaging lens of the present invention further satisfies the conditions (9) to (23), it helps to maintain the thickness and spacing of each lens at an appropriate value, avoiding any parameter being too large and thus not conducive to the overall thinning of the optical imaging lens, or avoiding any parameter being too small and thus affecting assembly or increasing the difficulty of manufacturing. Preferably, the following conditions can be further met: 0.800≦(T1+G23) / (G34+G45+G56)≦3.300, 1.100≦(T1+T6) / (G34+G45+G56)≦4.500, 0.900≦(T1+G23) / (G34+G56)≦5.100, 1.100≦D11t21 / T2≦3.500, 0.400≦D22t32 / T2≦4.700, 0.200≦D11t21 / ImgH≦1.500, and 0.600≦D22t41 / (T2+T4). ≦2.000, 3.700≦(T6+BFL) / D51t61≦7.800, 1.700≦D21t31 / (G45+G56)≦7.900, 2.500≦D31t41 / (G45+G56)≦5.700, 2.100≦ (T4+T5) / (G45+G56)≦9.800, 2.500≦(D11+EPD) / ImgH≦4.000, 0.500≦D11t21 / D41t51≦2.000, 1.100≦T6 / D51t61≦3.800.

[0040] In addition, any combination of parameters in the alternative embodiments can be selected to increase lens constraints, thereby facilitating lens design with the same architecture as the present invention.

[0041] In view of the unpredictability of optical system design, under the framework of the present invention, meeting the above conditions can better shorten the system length, reduce the aperture value, improve the image quality, or improve the assembly yield, thereby improving 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.

[0042] In implementing this invention, in addition to the above-described conditional expressions, other additional details or structures, such as concave-convex surface arrangements, refractive index variations, or other features, can be designed for a single lens or, more broadly, for multiple lenses, as shown in the following embodiments, to enhance control over system size, performance, resolution, and / or improve manufacturing yield. Furthermore, regarding material design, all lenses in the optical imaging lens of this invention are made of plastic to reduce lens weight and save costs, but lenses made of various materials such as glass and resin can also be used. It should be noted that these details should be selectively incorporated into other embodiments of this invention without conflict, and are not limited thereto.

[0043] To illustrate that the present invention can indeed increase the field of view and reduce the aperture value while providing good optical performance, several embodiments and their detailed optical data are provided below. Please refer to the following first. Figures 6 to 9 ,in Figure 6 This diagram shows a cross-sectional view of a six-element lens of an optical imaging lens according to a first embodiment of the present invention. Figure 7 This diagram shows the longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of the optical imaging lens according to the first embodiment of the present invention. Figure 8 This displays detailed optical data of the optical imaging lens according to the first embodiment of the present invention. Figure 9 This displays the aspherical data of each lens of the optical imaging lens according to the first embodiment of the present invention.

[0044] like Figure 6 As shown, the optical imaging lens 1 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2, a third lens L3, an aperture stop STO, a fourth lens L4, a vignetting shield VS, a fifth lens L5, and a sixth lens L6. A filter TF, a protective glass CG, and an imaging surface IMA of an image sensor are all disposed on the image side A2 of the optical imaging lens 1. In this embodiment, the filter TF is an infrared cut filter and is disposed between the sixth lens L6 and the protective glass CG. The filter TF filters out wavelengths of specific bands from the light passing through the optical imaging lens 1, such as filtering out the infrared band, so that the wavelengths of the infrared band will not be imaged on the imaging surface IMA, thus avoiding affecting the image quality. In this example, the filter TF and the protective glass CG are made of D263T glass, but are not limited to this.

[0045] The first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 of the optical imaging lens 1 are exemplaryly made of glass, but are not limited to this, and may also be made of other materials, such as plastic, resin, sapphire glass, etc. For example, glass materials include, but are not limited to, CORNING_8E83H41, APL5014CL_14, EP8000, EP3500, and similar materials.

[0046] The detailed structure of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 is as follows: The first lens L1 has a negative refractive index and has an object-side surface L1A1 facing the object side A1 and an image-side surface L1A2 facing the image side A2. The object-side surface L1A1 is a plane, therefore its optical axis region L1A1C and its circumferential region L1A1P are both planes. The optical axis region L1A2C of the image-side surface L1A2 is concave, and its circumferential region L1A2P is also concave.

[0047] The second lens L2 has a positive refractive index and has an object-side surface L2A1 facing the object side A1 and an image-side surface L2A2 facing the image side A2. The optical axis region L2A1C of the object-side surface L2A1 is concave and its circumferential region L2A1P is concave. The optical axis region L2A2C of the image-side surface L2A2 is convex and its circumferential region L2A2P is convex.

[0048] The third lens L3 has a negative refractive index and has an object-side surface L3A1 facing the object side A1 and an image-side surface L3A2 facing the image side A2. The optical axis region L3A1C of the object-side surface L3A1 is convex, and its circumferential region L3A1P is also convex. The optical axis region L3A2C of the image-side surface L3A2 is concave, and its circumferential region L3A2P is also concave.

[0049] The fourth lens L4 has a positive refractive index and has an object-side surface L4A1 facing the object side A1 and an image-side surface L4A2 facing the image side A2. The optical axis region L4A1C of the object-side surface L4A1 is convex, and its circumferential region L4A1P is also convex. The optical axis region L4A2C of the image-side surface L4A2 is convex, and its circumferential region L4A2P is also convex.

[0050] The fifth lens L5 has a positive refractive index and has an object-side surface L5A1 facing the object side A1 and an image-side surface L5A2 facing the image side A2. The optical axis region L5A1C of the object-side surface L5A1 is concave, and its circumferential region L5A1P is also concave. The optical axis region L5A2C of the image-side surface L5A2 is convex, and its circumferential region L5A2P is also convex.

[0051] The sixth lens L6 has a negative refractive index and has an object-side surface L6A1 facing the object side A1 and an image-side surface L6A2 facing the image side A2. The optical axis region L6A1C of the object-side surface L6A1 is concave, and its circumferential region L6A1P is convex. The optical axis region L6A2C of the image-side surface L6A2 is convex, and its circumferential region L6A2P is concave.

[0052] In this embodiment, air gaps exist between each lens L1, L2, L3, L4, L5, L6, the filter TF, the protective glass CG, and the imaging surface IMA of the image sensor. However, this is not a limitation; in other embodiments, the surface contours of any two opposing lenses can be designed to correspond to each other and fit together to eliminate air gaps. In this embodiment, the vignetting shading plate VS is provided on the image-side L4A2 of the fourth lens L4, but it is not limited to this. The vignetting shading plate VS can precisely intercept the edge light with poor imaging quality from the optical axis I towards the optical boundary OB, thereby effectively improving the overall sharpness and resolution of the image. Furthermore, it can also act as a controlled shading mechanism in non-essential imaging areas to suppress stray light in the system, further enhancing image contrast.

[0053] For the optical characteristics and distance values ​​of each lens in the optical imaging lens 1 of this embodiment, please refer to... Figure 8 Therefore, the effective focal length (EFL) of the optical imaging lens 1 in this embodiment is 0.707 mm, the half field of view (HFOV) is 80.000 degrees, the aperture number (F-number, Fno) is 3.666, the image height is 0.806 mm, and its system length (TTL) is 4.713 mm. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figure 30 .

[0054] Except for the object-side surface L1A1 of the first lens L1, which is a plane, and the image-side surface L1A2, which is an aspherical surface, the object-side surface L2A1 and image-side surface L2A2 of the second lens L2, the object-side surface L3A1 and image-side surface L3A2 of the third lens L3, the object-side surface L4A1 and image-side surface L4A2 of the fourth lens L4, the object-side surface L5A1 and image-side surface L5A2 of the fifth lens L5, and the object-side surface L6A1 and image-side surface L6A2 of the sixth lens L6, a total of ten aspherical surfaces, are all defined according to the following aspherical curve formula:

[0055] 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 at a distance Y from the optical axis and the tangent plane at the vertex on the optical axis of the aspherical surface); R represents the radius of curvature of the lens surface near the optical axis; K is the conic constant; a i These are the coefficients of the i-th order aspherical surface. Please refer to the detailed data for the parameters of each aspherical surface. Figure 9 Please note that in this embodiment and subsequent embodiments, all aspherical coefficients not listed are zero.

[0056] Figure 7 In the diagram, area A illustrates the longitudinal spherical aberration of this embodiment, with the horizontal axis representing longitudinal spherical aberration and the vertical axis representing the field of view; area B illustrates the field curvature aberration in the sagittal direction of this embodiment; area C illustrates the field curvature aberration in the meridional direction of this embodiment, with the horizontal axis representing field curvature aberration and the vertical axis representing image height; and area D illustrates the distortion aberration of this embodiment, with the horizontal axis representing percentage and the vertical axis representing image height. Off-axis rays at different heights for three representative wavelengths (470nm, 555nm, 650nm) are all concentrated near the imaging point. The skewness of each curve shows that the imaging point deviation of off-axis rays at different heights is controlled within -0.006~0.027mm, significantly improving spherical aberration at different wavelengths. The field curvature aberration in the sagittal direction falls within -0.018~0.036mm, the field curvature aberration in the meridional direction falls within -0.081~0.009mm, while the distortion aberration remains within -80~0%.

[0057] The data above shows that the various optical characteristics of the optical imaging lens 1 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 1 of this first preferred embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while providing a system length of 4.713 mm.

[0058] refer to Figures 10 to 13 , Figure 10 This diagram shows a cross-sectional view of a six-element lens in an optical imaging lens according to a second embodiment of the present invention. Figure 11 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to a second embodiment of the present invention. Figure 12 Detailed optical data of the optical imaging lens according to the second embodiment of the present invention are shown. Figure 13 The aspherical data of each lens of the optical imaging lens according to the second embodiment of the present invention are shown, and please note that those not listed are all zero. Figure 10As shown in the figure, the optical imaging lens 2 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0059] The surface irregularities of the object-side surfaces L1A1, L3A1, L4A1, L5A1 facing the object side A1 and the image-side surfaces L1A2, L3A2, L4A2 facing the image side A2 in the second embodiment, as well as the positive and negative refractive index configurations of the first lens L1 and the fourth lens L4, are generally similar to those in the first embodiment. However, the relevant optical parameters such as the radius of curvature, lens thickness, aspherical coefficient, and back focal length, the surface irregularities of the object-side surfaces L2A1, L6A1 and the image-side surfaces L2A2, L5A2, L6A2, and the positive and negative refractive index configurations of the lenses other than the first lens L1 and the fourth lens L4 in the second embodiment are different from those in the first embodiment. In detail, the differences are as follows: the second lens L2 has a negative refractive index; the optical axis region L2A1C of the object-side surface L2A1 of the second lens L2 is convex, and the circumferential region L2A1P is also convex; the optical axis region L2A2C of the image-side surface L2A2 of the second lens L2 is concave, and the circumferential region L2A2P is also concave. The third lens L3 has a positive refractive index; the fifth lens L5 has a negative refractive index; the optical axis region L5A2C of the image-side surface L5A2 of the fifth lens L5 is concave, and the circumferential region L5A2P is also concave; the sixth lens L6 has a positive refractive index; the optical axis region L6A1C of the object-side surface L6A1 of the sixth lens L6 is convex, and the circumferential region L6A2P of the image-side surface L6A2 of the sixth lens L6 is also convex. For the optical characteristics and distance values ​​of each lens of the optical imaging lens 2 in this embodiment, please refer to... Figure 12 As can be seen, the optical imaging lens 2 in this embodiment has an EFL of 0.529mm, an HFOV of 80.000 degrees, an Fno of 2.082, an image height of 0.604mm, and a TTL of 2.629mm. Compared with the first embodiment, the system length of this embodiment is shorter. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0060] from Figure 11In the diagram, area A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.009 to 0.01 mm, as shown by the skewing amplitude of each curve. Area B shows field curvature aberration in the sagittal direction, showing that the focal length variation of the three representative wavelengths (470 nm, 555 nm, 650 nm) falls within 10.50 to 1.50 µm across the entire field of view. Area C shows field curvature aberration in the meridional direction, showing that the focal length variation of the three representative wavelengths falls within -15 to 10.5 µm across the entire field of view. Area D shows that the distortion aberration of the optical imaging lens 2 is maintained within the range of -80% to 0%. Compared with the first embodiment, this embodiment shows smaller longitudinal spherical aberration and smaller sagittal and meridional field curvature aberrations.

[0061] The data above shows that the various optical characteristics of the optical imaging lens 2 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 2 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 2.629 mm.

[0062] refer to Figures 14 to 17 , Figure 14 This diagram shows a cross-sectional view of a six-element lens in an optical imaging lens according to a third embodiment of the present invention. Figure 15 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to a third embodiment of the present invention. Figure 16 Detailed optical data of the optical imaging lens according to the third embodiment of the present invention are shown. Figure 17 This displays the aspherical data of each lens in the optical imaging lens according to the third embodiment of the present invention, and note that those not listed are all zero. For example... Figure 14 As shown in the figure, the optical imaging lens 3 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0063] The surface irregularities of the object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 facing the object side A1 and the image-side surfaces L1A2, L2A2, L3A2, L4A2, L5A2 facing the image side A2 in the third embodiment, as well as the positive and negative refractive index configurations of the lenses except for the second lens L2, are generally similar to those in the first embodiment. However, the third embodiment differs from the first embodiment in terms of related optical parameters such as radius of curvature, lens thickness, aspherical coefficient, and back focal length, and in the positive and negative refractive index configuration of the second lens L2. Specifically, the difference lies in that the second lens L2 has a negative refractive index, and the circumferential region L6A2P of the image-side surface L6A2 of the sixth lens L6 is convex. For the optical characteristics and distance values ​​of each lens in the optical imaging lens 3 of this embodiment, please refer to... Figure 16 As can be seen, the optical imaging lens 3 in this embodiment has an EFL of 0.733mm, an HFOV of 80.000 degrees, an Fno of 3.765, an image height of 0.805mm, and a TTL of 4.678mm. The system length of this embodiment is smaller than that of the first embodiment. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0064] from Figure 15 In the diagram, area A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.018 to 0.010 mm, as shown by the skewing amplitude of each curve. Area B shows field curvature aberration in the sagittal direction, showing that the focal length variation of the three representative wavelengths (470 nm, 555 nm, 650 nm) falls within -18 to 7.2 µm across the entire field of view. Area C shows field curvature aberration in the meridional direction, showing that the focal length variation of the three representative wavelengths falls within -18 to 12.6 µm across the entire field of view. Area D shows distortion aberration maintained within the range of -80% to 0%. Compared to the first embodiment, this embodiment shows smaller longitudinal spherical aberration and field curvature aberrations in the sagittal and meridional directions.

[0065] The data above shows that the various optical characteristics of the optical imaging lens 3 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 3 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 4.678 mm.

[0066] refer to Figures 18 to 21 , Figure 18 This diagram shows a cross-sectional view of a six-element lens in an optical imaging lens according to a fourth embodiment of the present invention. Figure 19 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to a fourth embodiment of the present invention. Figure 20 This displays detailed optical data of the optical imaging lens according to the fourth embodiment of the present invention. Figure 21 This displays the aspherical data of each lens in the optical imaging lens according to the fourth embodiment of the present invention, and note that those not listed are all zero. For example... Figure 18 As shown in the figure, the optical imaging lens 4 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0067] The surface irregularities of the object-side surfaces L1A1, L3A1, L4A1, L5A1 facing the object side A1 and the image-side surfaces L1A2, L3A2, L4A2 facing the image side A2 in the fourth embodiment, as well as the positive and negative refractive index configurations of the first lens L1 and the fourth lens L4, are generally similar to those in the first embodiment. However, the relevant optical parameters such as the radius of curvature, lens thickness, aspherical coefficient, and back focal length, the surface irregularities of the object-side surfaces L2A1, L5A1, L6A1 and the image-side surfaces L2A2, L5A2, L6A2, and the positive and negative refractive index configurations of the lenses other than the first lens L1 and the fourth lens L4 in the fourth embodiment are different from those in the first embodiment. In detail, the differences are as follows: the second lens L2 has a negative refractive index; the optical axis region L2A1C of the object-side surface L2A1 of the second lens L2 is convex, and the circumferential region L2A1P is also convex; the optical axis region L2A2C of the image-side surface L2A2 of the second lens L2 is concave, and the circumferential region L2A2P is also concave. The third lens L3 has a positive refractive index; the fifth lens L5 has a negative refractive index; the optical axis region L5A2C of the image-side surface L5A2 of the fifth lens L5 is concave, and the circumferential region L5A2P is also concave; the sixth lens L6 has a positive refractive index; the optical axis region L6A1C of the object-side surface L6A1 of the sixth lens L6 is convex, and the circumferential region L6A2P of the image-side surface L6A2 of the sixth lens L6 is also convex. For the optical characteristics and distance values ​​of each lens of the optical imaging lens 4 in this embodiment, please refer to... Figure 20 As can be seen, the optical imaging lens 4 in this embodiment has an EFL of 0.592mm, an HFOV of 81.000 degrees, an Fno of 2.297, an image height of 0.801mm, and a TTL of 2.627mm. The HFOV of this embodiment is larger than that of the first embodiment, and the system length is smaller. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0068] from Figure 19In the diagram, region A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.018 to 0.010 mm, as shown by the skewing amplitude of each curve. Region B shows sagittal field curvature aberration, indicating that the focal length variation of the three representative wavelengths (470 nm, 555 nm, 650 nm) falls within -16.80 to 4.80 µm across the entire field of view. Region C shows meridional field curvature aberration, indicating that the focal length variation of the three representative wavelengths falls within -2.40 to 24.00 µm across the entire field of view. Region D shows distortion aberration maintained within the range of -79% to 0%. Compared to the first embodiment, this embodiment shows smaller longitudinal spherical aberration, sagittal and meridional field curvature aberrations, and distortion aberrations.

[0069] The data above shows that the various optical characteristics of the optical imaging lens 4 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 4 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 2.627 mm.

[0070] refer to Figures 22 to 25 , Figure 22 This diagram shows a cross-sectional view of a six-element lens in an optical imaging lens according to a fifth embodiment of the present invention. Figure 23 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to a fifth embodiment of the present invention. Figure 24 Detailed optical data of the optical imaging lens according to the fifth embodiment of the present invention are displayed. Figure 25 This displays the aspherical data of each lens in the optical imaging lens according to the fifth embodiment of the present invention, and note that those not listed are all zero. For example... Figure 22 As shown in the figure, the optical imaging lens 5 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0071] The surface irregularities of the object-side surfaces L1A1, L3A1, L4A1 facing the object side A1 and the image-side surfaces L1A2, L3A2, L4A2 facing the image side A2 in the fifth embodiment, as well as the positive and negative refractive index configurations of the first lens L1, the fourth lens L4, and the fifth lens L5, are generally similar to those in the first embodiment. However, the relevant optical parameters such as the radius of curvature, lens thickness, aspherical coefficient, and back focal length, the surface irregularities of the object-side surfaces L2A1, L5A1, L6A1 and the image-side surfaces L2A2, L5A2, L6A2, and the positive and negative refractive index configurations of the second lens L2, the fourth lens L4, and the fifth lens L5 in the fifth embodiment are different from those in the first embodiment. In detail, the differences are as follows: the second lens L2 has a negative refractive index; the optical axis region L2A1C of the object-side surface L2A1 of the second lens L2 is convex; the optical axis region L2A2C of the image-side surface L2A2 of the second lens L2 is concave, and the circumferential region L2A2P is concave; the third lens L3 has a positive refractive index; the optical axis region L5A1C of the object-side surface L5A1 of the fifth lens L5 is convex; the optical axis region L5A2C of the image-side surface L5A2 of the fifth lens L5 is concave, and the circumferential region L5A2P is concave; and the sixth lens L6 has a positive refractive index, and the optical axis region L6A1C of the object-side surface L6A1 of the sixth lens L6 is convex. For the optical characteristics and distance values ​​of each lens in the optical imaging lens 5 of this embodiment, please refer to... Figure 24 As can be seen, the optical imaging lens 5 in this embodiment has an EFL of 0.622mm, an HFOV of 79.213 degrees, an Fno of 2.696, an image height of 0.800mm, and a TTL of 3.714mm. The system length of this embodiment is smaller than that of the first embodiment. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0072] from Figure 23 In the diagram, area A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.018 to 0.010 mm, as shown by the skewing amplitude of each curve. Area B shows sagittal field curvature aberration, showing that the focal length variation of the three representative wavelengths (470 nm, 555 nm, 650 nm) falls within -21.60 to 8.10 µm across the entire field of view. Area C shows meridional field curvature aberration, showing that the focal length variation of the three representative wavelengths falls within -18.9 to 24.30 µm across the entire field of view. Area D shows that distortion aberration is maintained within the range of -75% to 0%. Compared to the first embodiment, this embodiment shows smaller longitudinal spherical aberration, sagittal field curvature aberration, and distortion aberration.

[0073] The data above shows that the various optical characteristics of the optical imaging lens 5 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 5 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 3.714 mm.

[0074] refer to Figures 26 to 29 , Figure 26 This diagram shows a cross-sectional view of a six-element lens in an optical imaging lens according to a sixth embodiment of the present invention. Figure 27 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to a sixth embodiment of the present invention. Figure 28 This displays detailed optical data of the optical imaging lens according to the sixth embodiment of the present invention. Figure 29 This displays the aspherical data of each lens in the optical imaging lens according to the sixth embodiment of the present invention, and note that those not listed are all zero. For example... Figure 26 As shown in the figure, the optical imaging lens 6 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0075] In the sixth embodiment, the surface concavity and convexity configuration of the object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 facing the object side A1 and the image-side surfaces L1A2, L2A2, L3A2, L4A2 facing the image side A2, as well as the positive and negative refractive index configuration of each lens, are generally similar to those of the first embodiment. However, the sixth embodiment differs from the first embodiment in terms of related optical parameters such as radius of curvature, lens thickness, aspherical coefficient, and back focal length, as well as the surface concavity and convexity configuration of the image-side surfaces L5A2 and L6A2. Specifically, the difference lies in that the circumferential region L5A2P of the image-side surface L5A2 of the fifth lens L5 is concave, while the circumferential region L6A2P of the image-side surface L6A2 of the sixth lens L6 is convex. For the optical characteristics and distance values ​​of each lens in the optical imaging lens 6 of this embodiment, please refer to... Figure 28 As can be seen, the optical imaging lens 6 in this embodiment has an EFL of 0.758mm, an HFOV of 80.000 degrees, an Fno of 3.619, an image height of 0.800mm, and a TTL of 4.681mm. Compared to the first embodiment, the system length of this embodiment is smaller. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0076] from Figure 27In the diagram, area A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.018 to 0.016 mm, as shown by the skewing amplitude of each curve. Area B shows field curvature aberration in the sagittal direction, showing that the focal length variation of the three representative wavelengths (470 nm, 555 nm, 650 nm) falls within -20.00 to 18.00 µm across the entire field of view. Area C shows field curvature aberration in the meridional direction, showing that the focal length variation of the three representative wavelengths falls within -18.00 to 18.00 µm across the entire field of view. Area D shows distortion aberration maintained within the range of -80% to 0%. Compared to the first embodiment, this embodiment shows smaller field curvature aberrations in both the sagittal and meridional directions.

[0077] The data above shows that the various optical characteristics of the optical imaging lens 6 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 6 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 4.681 mm.

[0078] refer to Figures 30 to 33 , Figure 30 This diagram shows a cross-sectional view of a seven-element lens in an optical imaging lens according to a seventh embodiment of the present invention. Figure 31 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to the seventh embodiment of the present invention. Figure 32 Detailed optical data of the optical imaging lens according to the seventh embodiment of the present invention are displayed. Figure 33 This displays the aspherical data of each lens in the optical imaging lens according to the seventh embodiment of the present invention, and note that those not listed are all zero. For example... Figure 30 As shown in the figure, the optical imaging lens 7 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0079] The surface concavity and convexity configuration of the object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, L6A1 facing the object side A1 and the image-side surfaces L1A2, L2A2, L3A2, L4A2 facing the image side A2 in the seventh embodiment, as well as the positive and negative refractive index configuration of each lens, are generally similar to those in the first embodiment. However, the seventh embodiment differs from the first embodiment in terms of related optical parameters such as radius of curvature, lens thickness, aspherical coefficient, and back focal length, as well as the surface concavity and convexity configuration of the image-side surfaces L5A2 and L6A2. Specifically, the difference lies in that the circumferential region L5A2P of the image-side surface L5A2 of the fifth lens L5 is concave, and the circumferential region L6A2P of the image-side surface L6A2 of the sixth lens L6 is convex. For the optical characteristics and distance values ​​of each lens in the optical imaging lens 7 of this embodiment, please refer to... Figure 32 As can be seen, the optical imaging lens 7 in this embodiment has an EFL of 0.790mm, an HFOV of 80.000 degrees, an Fno of 3.490, an image height of 0.805mm, and a TTL of 4.706mm. Compared to the first embodiment, the system length of this embodiment is smaller. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0080] from Figure 31 In the diagram, area A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.005 to 0.007 mm, as shown by the skewing amplitude of each curve. Area B shows field curvature aberration in the sagittal direction, showing that the focal length variation of the three representative wavelengths (470 nm, 555 nm, 750 nm) falls within -4.90 to 7.00 µm across the entire field of view. Area C shows field curvature aberration in the meridional direction, again showing that the focal length variation of the three representative wavelengths falls within -4.90 to 7.00 µm across the entire field of view. Area D shows distortion aberration maintained within the range of -80% to 0%. Compared to the first embodiment, this embodiment shows smaller longitudinal spherical aberration, sagittal aberration, and meridional field curvature aberration.

[0081] The data above shows that the various optical characteristics of the optical imaging lens 7 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 7 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 4.706 mm.

[0082] refer to Figures 34 to 37 , Figure 34 This diagram shows a cross-sectional view of an eight-element lens in an optical imaging lens according to the eighth embodiment of the present invention. Figure 35 This diagram shows a longitudinal spherical aberration and various aberration maps (areas A, B, C, and D) of an optical imaging lens according to the eighth embodiment of the present invention. Figure 36This displays detailed optical data of the optical imaging lens according to the eighth embodiment of the present invention. Figure 37 This displays the aspherical data of each lens in the optical imaging lens according to the eighth embodiment of the present invention, and note that those not listed are all zero. For example... Figure 36 As shown, the optical imaging lens 8 of this embodiment includes, from the object side A1 to the image side A2, a first lens L1, a second lens L2 and a third lens L3, an aperture STO, a fourth lens L4, a vignetting shading plate VS, a fifth lens L5 and a sixth lens L6 in sequence.

[0083] The surface irregularities of the object-side surfaces L3A1, L4A1, L5A1 facing the object side A1 and the image-side surfaces L1A2, L3A2, L4A2 facing the image side A2 in the eighth embodiment, as well as the positive and negative refractive index configurations of the first lens L1 and the fourth lens L4, are generally similar to those in the first embodiment. However, the relevant optical parameters such as the radius of curvature, lens thickness, aspherical coefficient, and back focal length, as well as the surface irregularities of the object-side surfaces L1A1, L2A1, L6A1 and the image-side surfaces L2A2, L5A2, L6A2 in the eighth embodiment, are different from those in the first embodiment. In detail, the differences are as follows: the object-side surface L1A1 of the first lens L1 has a convex optical axis region L1A1C and a convex circular region L1A1P; the second lens L2 has a negative refractive index, the object-side surface L2A1 of the second lens L2 has a convex optical axis region L2A1C and a convex circular region L2A1P; the image-side surface L2A2 of the second lens L2 has a concave optical axis region L2A2C and a concave circular region L2A2P; the third lens L3 has a positive refractive index; the fifth lens L5 has a negative refractive index, the image-side surface L5A2 of the fifth lens L5 has a concave optical axis region L5A2C and a concave circular region L5A2P; and the sixth lens L6 has a positive refractive index, the object-side surface L6A1 of the sixth lens L6 has a convex optical axis region L6A1C, and the image-side surface L6A2 of the sixth lens L6 has a convex circular region L6A2P. For the optical characteristics and distance values ​​of each lens of the optical imaging lens 8 in this embodiment, please refer to... Figure 36 As can be seen, the optical imaging lens 8 in this embodiment has an EFL of 0.592mm, an HFOV of 81.000 degrees, an Fno of 2.297, an image height of 0.802mm, and a TTL of 2.627mm. Compared to the first embodiment, this embodiment has a larger HFOV and a smaller system length. For the numerical values ​​of the various parameter combinations in the design, please refer to... Figures 38-41 .

[0084] from Figure 35In the diagram, area A shows longitudinal spherical aberration, indicating that the imaging point deviation of off-axis rays at different heights is controlled within -0.012 to 0.010 mm, as shown by the skewing amplitude of each curve. Area B shows field curvature aberration in the sagittal direction, showing that the focal length variation of the three representative wavelengths (480 nm, 555 nm, 850 nm) falls within -15.40 to 4.40 µm across the entire field of view. Area C shows field curvature aberration in the meridional direction, showing that the focal length variation of the three representative wavelengths falls within -4.40 to 22.00 µm across the entire field of view. Area D shows that distortion aberration is maintained within the range of -78% to 0%. Compared to the first embodiment, this embodiment shows smaller longitudinal spherical aberration, sagittal and meridional field curvature aberrations, and distortion aberrations.

[0085] The data above shows that the various optical characteristics of the optical imaging lens 8 meet the imaging quality requirements of the optical system. Therefore, the optical imaging lens 8 of this embodiment, compared to existing optical lenses, can still effectively provide better imaging quality while maintaining a system length of 2.627 mm.

[0086] Figures 38-41 By listing the numerical values ​​of each parameter combination in the above eight embodiments, as well as the detailed optical data and tables of each embodiment, it can be seen that the optical imaging lens of the present invention can indeed simultaneously satisfy any of the aforementioned conditions (1) to (3), conditions (1), (3) to (5) and / or other conditions.

[0087] The longitudinal spherical aberration, field curvature aberration, and distortion aberration of the optical imaging lens of this invention in all embodiments conform to the usage specifications. Furthermore, off-axis rays of the three representative wavelengths at different heights are all concentrated near the imaging point. The skewing amplitude of each curve shows that the imaging point deviation of off-axis rays at different heights is controlled, demonstrating excellent spherical aberration, aberration, and distortion suppression capabilities. Further review of the imaging quality data reveals that the distances between the three representative wavelengths are also quite close, indicating that this invention exhibits excellent concentration of different wavelengths of light under various conditions, resulting in superior dispersion suppression capabilities. In summary, this invention, through lens design and combination, can produce excellent imaging quality.

[0088] The embodiments of this invention disclose optical parameters including, but not limited to, focal length, lens 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 comparative 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.

[0089] (2) Comparison of optical parameters, for example: A is greater than B or A is less than B.

[0090] (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.

[0091] 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.

[0092] 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.

Claims

1. An optical imaging lens, comprising, in sequence along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein each of the first lens to the sixth lens includes an object side facing the object side and through which imaging light passes and an image side facing the image side and through which imaging light passes. wherein The first lens has a negative refractive index; The object side of the third lens has a convex surface, and the image side of the third lens has a concave surface. The fourth lens has a positive refractive index and a convex optical axis region on the object side of the fourth lens; The sixth lens has a convex surface in a circumferential region on the object side and a convex surface in an optical axis region on the image side. The optical imaging lens has only the aforementioned six lenses and satisfies the following condition: ΔSAG11≦0.300µm, HFOV / TTL ≥ 17,000 degrees / mm, and CRAih≦30 degrees, Wherein, ΔSAG11 represents the difference between the highest and lowest points on the object side of the first lens, HFOV represents the half field of view of the optical imaging lens, TTL represents the system length of the optical imaging lens, and CRAih represents the principal ray angle of the optical imaging lens at the maximum image height.

2. An optical imaging lens, comprising, in sequence along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein each of the first lens to the sixth lens includes an object side facing the object side and through which imaging light passes and an image side facing the image side and through which imaging light passes. wherein, The first lens has a negative refractive index; The object side of the third lens has a convex surface, and the image side of the third lens has a concave surface. The fourth lens has a positive refractive index and a convex optical axis region on the object side of the fourth lens; The sixth lens has a convex surface in a circumferential region on the object side and a convex surface in an optical axis region on the image side. The optical imaging lens has only the aforementioned six lenses and satisfies the following condition: ΔSAG11≦0.300µm, Sag11 / (D11 / 2)≦0.035%, HFOV / (TTL+D11 / 2)≧12.700 degrees / mm, and CRAih≦30 degrees, Wherein, ΔSAG11 represents the peak-valley value of the object side of the first lens, Sag11 represents the Sag value of the object side of the first lens at the optical boundary, D11 represents the distance between the two points formed by the maximum straight-line distance formed by the outermost edge contour of the first lens on the object side, HFOV represents the half field of view of the optical imaging lens, TTL represents the system length of the optical imaging lens, and CRAih represents the principal ray angle of the optical imaging lens at the maximum image height.

3. An optical imaging lens, comprising, in sequence along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each of the first lens to the sixth lens 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. wherein The first lens has a negative refractive index; The optical axis region on the object side of the third lens is convex, and the optical axis region on the image side of the third lens is concave. The fourth lens has a positive refractive index and a convex optical axis region on the object side of the fourth lens; The sixth lens has a convex surface in a circumferential region on the object side and a convex surface in an optical axis region on the image side. The optical imaging lens has only the aforementioned six lenses and satisfies the following condition: ΔSAG11≦0.300µm, Sag11 / (D11 / 2)≦0.035%, HFOV / (TTL+D11 / 2)≧12.700 degrees / mm, and CRAih≦30 degrees, Wherein, ΔSAG11 represents the peak-valley value of the object-side surface of the first lens, Sag11 represents the Sag value of the object-side surface of the first lens at the optical boundary, D11 represents the distance between the two points formed by the maximum straight-line distance of the outermost edge contour of the first lens on the object-side surface, HFOV represents the half field of view of the optical imaging lens, TTL represents the system length of the optical imaging lens, and CRAih represents the principal ray angle of the optical imaging lens at the maximum image height.

4. The optical imaging lens as described in any one of claims 1-3, wherein the optical imaging lens further satisfies (EFL+T1) / (G45+G56)≦10.500, where EFL represents the effective focal length of the optical imaging lens, T1 represents the thickness of the first lens on the optical axis, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

5. The optical imaging lens as described in any one of claims 1-3, wherein the optical imaging lens further satisfies (EFL+T6) / (G45+G56)≦11.000, where EFL represents the effective focal length of the optical imaging lens, T6 represents the thickness of the sixth lens on the optical axis, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

6. The optical imaging lens as described in any one of claims 1-3, wherein the optical imaging lens further satisfies (EFL+G23) / (G45+G56)≦13.000, where EFL represents the effective focal length of the optical imaging lens, G23 represents the distance on the optical axis from the image side of the second lens to the object side of the third lens, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

7. The optical imaging lens as described in any one of claims 1-3, wherein the optical imaging lens further satisfies (T1+G23) / (G34+G45+G56)≦3.300, where T1 represents the thickness of the first lens on the optical axis, G23 represents the distance on the optical axis from the image side of the second lens to the object side of the third lens, G34 represents the distance on the optical axis from the image side of the third lens to the object side of the fourth lens, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

8. The optical imaging lens as described in any one of claims 1-3, wherein the optical imaging lens further satisfies (T1+T6) / (G34+G45+G56)≦4.500, where T1 represents the thickness of the first lens on the optical axis, T6 represents the thickness of the sixth lens on the optical axis, G34 represents the distance on the optical axis from the image side of the third lens to the object side of the fourth lens, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

9. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies (T1+G23) / (G34+G56)≦5.100, where T1 represents the thickness of the first lens on the optical axis, G23 represents the distance on the optical axis from the image side of the second lens to the object side of the third lens, G34 represents the distance on the optical axis from the image side of the third lens to the object side of the fourth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

10. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D11t21 / T2≦3.500, where D11t21 represents the distance from the object side of the first lens to the object side of the second lens on the optical axis, and T2 represents the thickness of the second lens on the optical axis.

11. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D22t32 / T2≦4.700, where D22t32 represents the distance from the image-side surface of the second lens to the image-side surface of the third lens on the optical axis, and T2 represents the thickness of the second lens on the optical axis.

12. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D11t21 / ImgH≦1.500, where D11t21 represents the distance from the object side of the first lens to the object side of the second lens on the optical axis, and ImgH represents the maximum image height of the optical imaging lens.

13. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D22t41 / (T2+T4)≦2.000, where D22t41 represents the distance on the optical axis from the image side of the second lens to the object side of the fourth lens, T2 represents the thickness of the second lens on the optical axis, and T4 represents the thickness of the fourth lens on the optical axis.

14. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies (T6+BFL) / D51t61≦7.800, where T6 represents the thickness of the sixth lens on the optical axis, BFL represents the back focal length of the optical imaging lens, and D51t61 represents the distance on the optical axis from the object side of the fifth lens to the object side of the sixth lens.

15. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D21t31 / (G45+G56)≦7.900, where D21t31 represents the distance on the optical axis from the object side of the second lens to the object side of the third lens, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

16. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D31t41 / (G45+G56)≦5.700, where D31t41 represents the distance on the optical axis from the object side of the third lens to the object side of the fourth lens, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

17. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies (T4+T5) / (G45+G56)≦9.800, where T4 represents the thickness of the fourth lens on the optical axis, T5 represents the thickness of the fifth lens on the optical axis, G45 represents the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens, and G56 represents the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens.

18. The optical imaging lens as claimed in claim 3, wherein the optical imaging lens further satisfies (D11+EPD) / ImgH≦4.000, where D11 represents the distance between two points formed by the maximum straight-line distance formed by the outermost edge contour of the first lens on the side of the object, EPD represents the entrance pupil diameter of the optical imaging lens, and ImgH represents the maximum image height of the optical imaging lens.

19. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies HFOV EFL / (ALT+BFL) > 16.000, EFL represents an effective focal length of the optical imaging lens, ALT represents a sum of six lens thicknesses of the first lens to the sixth lens on the optical axis, and BFL represents a back focal length of the optical imaging lens.

20. The optical imaging lens according to any one of claims 1-3, wherein the optical imaging lens further satisfies D11t21 / D41t51≦2.000, where D11t21 represents the distance on the optical axis from the object side of the first lens to the object side of the second lens, and D41t51 represents the distance on the optical axis from the object side of the fourth lens to the object side of the fifth lens.

Images