TW202026690A - Optical imaging lens - Google Patents

Abstract

An optical imaging lens including a first lens element, a second lens element, a third lens element, an aperture, a fourth lens element and a fifth lens element arranged in sequence from an object side to an image side along an optical axis is provided. The first lens element is arranged to be a lens element of which refracting power being equal to 0 inverse millimeter (mm^-1 ) in a first order from the object side to the image side. The second lens element is arranged to be a lens element having refracting power in a first order from the first lens element to the image side. The third lens element is arranged to be a lens element having refracting power in a second order from the first lens element to the image side. The fourth lens element is arranged to be a lens element having refracting power in a first order from the aperture to the image side. The fifth lens element is arranged to be a lens element having refracting power in a second order from the aperture to the image side.

Description

Optical imaging lens

The present invention relates to an optical element, and especially an optical imaging lens.

The specifications of portable electronic products are changing with each passing day, and their key components-optical imaging lenses are also developing more diversified. The application areas of automotive lenses continue to increase. From reversing, 360-degree panoramic views, lane shifting systems to advanced driver assistance systems (ADAS), etc., a car uses 6 to 20 lenses, and the lens specifications are also increasing. Continue to improve, upgrade from VGA (300,000) to more than one million pixels. However, there is still much room for improvement in the imaging quality of car lenses and the imaging quality of tens of millions of pixels in mobile phone lenses.

The ambient temperature used by the car lens is between -20°C and 80°C. In addition, the lens itself must be able to withstand various harsh environment tests such as wind, rain, and sun. Therefore, the first lens of the lens should be made of glass that can withstand environmental testing. In addition, the half angle of view of the car lens must be large enough to be suitable for various needs such as rear view, reversing and surround view. Therefore, it is necessary to use a glass lens with a large negative refractive index, but it increases the difficulty and cost of grinding glass. Therefore, how to provide automotive lenses that are thermally stable, resistant to environmental testing, most of the viewing angle, low-cost, and consistent with imaging quality are issues that need to be studied by many parties.

The invention provides an optical imaging lens, which has good thermal stability, good optical parameters and good imaging quality.

An embodiment of the present invention provides an optical imaging lens that includes a first lens, a second lens, a third lens, an aperture, a fourth lens, and a fifth lens in order from the object side to the image side along the optical axis. Each of the first lens to the fifth lens includes an object side surface facing the object side and passing imaging light, and an image side surface facing the image side and passing imaging light. The first lens is the first lens with a refractive power equal to zero mm ^-1 from the object side to the image side. The second lens is the first lens having refractive power from the first lens to the image side. The third lens is the second lens with refractive power from the first lens to the image side. The third lens has positive refractive power. The fourth lens is the first lens with refractive power counted from the aperture to the image side. At least one of the object side surface of the fourth lens and the image side surface of the fourth lens is aspherical. The fifth lens is the second lens with refractive power from the aperture to the image side. Both the object side surface of the fifth lens and the image side surface of the fifth lens are aspherical surfaces.

An embodiment of the present invention provides an optical imaging lens that includes a first lens, a second lens, a third lens, an aperture, a fourth lens, and a fifth lens in order from the object side to the image side along the optical axis. Each of the first lens to the fifth lens includes an object side surface facing the object side and passing imaging light, and an image side surface facing the image side and passing imaging light. The first lens is the first lens with a refractive power equal to zero mm ^-1 from the object side to the image side. The second lens is the first lens having refractive power from the first lens to the image side. The third lens is the second lens with refractive power from the first lens to the image side. The fourth lens is the first lens with refractive power counted from the aperture to the image side. At least one of the object side surface of the fourth lens and the image side surface of the fourth lens is aspherical. The fifth lens is the second lens with refractive power from the aperture to the image side. Both the object side surface of the fifth lens and the image side surface of the fifth lens are aspherical surfaces. The optical imaging lens satisfies the following conditional formula: 1.250≦L2A1R/ImgH≦2.200, where L2A1R is the effective radius of the object side of the second lens, and ImgH is the maximum image height of the optical imaging lens.

Based on the above, in the optical imaging lens of the embodiment of the present invention, by satisfying the arrangement between the first to fifth lenses and the aperture, the refractive index of the first lens is equal to zero mm ^-1 , and the object side of the fourth lens At least one of the image side surfaces of the fourth lens is aspherical, and the object side of the fifth lens and the image side of the fifth lens are aspherical. Therefore, the optical imaging lens of the embodiment of the present invention may have good thermal stability, good optical parameters, and good imaging quality.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

The optical system in this specification includes at least one lens, which receives the imaging light from the incident optical system parallel to the optical axis to the half angle of view (HFOV) angle relative to the optical axis. The imaging light passes through the optical system to form images on the imaging surface. The term "a lens has positive refractive power (or negative refractive power)" refers to the positive (or negative) paraxial refractive power calculated by the lens based on Gaussian optics theory. The so-called "object side (or image side) of the lens" is defined as the specific range of the imaging light passing through the lens surface. The imaging light includes at least two types of light: chief ray (chief ray) Lc and marginal ray (marginal ray) Lm (as shown in Figure 1). The object side (or image side) of the lens can be divided into different areas according to different positions, including an optical axis area, a circumferential area, or one or more relay areas in some embodiments. The description of these areas will be detailed below Elaborate.

FIG. 1 is a radial cross-sectional view of the lens 100. Two reference points on the surface of the lens 100 are defined: the center point and the conversion point. The center point of the lens surface is an intersection point of the surface and the optical axis I. As shown in FIG. 1, the first center point CP1 is located on the object side surface 110 of the lens 100, and the second center point CP2 is located on the image side surface 120 of the lens 100. The conversion point is a point on the surface of the lens, and the tangent to the point is perpendicular to the optical axis I. The optical boundary OB that defines the lens surface is the point where the edge ray Lm passing through the radially outermost edge of 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, if there are multiple conversion points on the surface of a single lens, the conversion points are named sequentially from the first conversion point in a radially outward direction. For example, the first conversion point TP1 (closest to the optical axis I), the second conversion point TP2 (as shown in FIG. 4), and the Nth conversion point (the farthest from the optical axis I).

The range from the center point to the first conversion point TP1 is defined as the optical axis area, where the optical axis area includes the center point. The area from the Nth conversion point farthest from the optical axis I radially outward to the optical boundary OB is defined as a circumferential area. In some embodiments, it may further include a relay area between the optical axis area and the circumferential area, and the number of relay areas depends on the number of switching points.

After the light parallel to the optical axis I passes through an area, if the light is deflected toward the optical axis I and the intersection point with the optical axis I is on the lens image side A2, the area is convex. After the light rays parallel to the optical axis I pass through an area, if the intersection of the extension line of the light rays and the optical axis I is located at the object side A1 of the lens, the area is concave.

In addition, referring to FIG. 1, the lens 100 may further include an assembly part 130 extending radially outward from the optical boundary OB. The assembling part 130 is generally used for assembling the lens 100 to a corresponding element of the optical system (not shown). The imaging light does not reach the assembling part 130. The structure and shape of the assembling part 130 are only examples for illustrating the present invention, and the scope of the present invention is not limited thereto. The lens assembly 130 discussed below may be partially or completely omitted in the drawings.

Referring to Fig. 2, the optical axis zone Z1 is defined between the center point CP and the first conversion point TP1. A circumferential zone Z2 is defined between the first transition point TP1 and the optical boundary OB of the lens surface. As shown in FIG. 2, the parallel light ray 211 intersects the optical axis I at the image side A2 of the lens 200 after passing through the optical axis zone Z1. Since the light intersects the optical axis I on the image side A2 of the lens 200, the optical axis area Z1 is convex. On the contrary, the parallel light 212 diverges after passing through the circumferential area Z2. As shown in FIG. 2, the extension line EL of the parallel light ray 212 after passing through the circumferential area Z2 intersects the optical axis I at the object side A1 of the lens 200, that is, the focal point of the parallel light 212 passing through the circumferential area Z2 is located at point M on the object side A1 of the lens 200 . Since the extension line EL of the light intersects the optical axis I at the object side A1 of the lens 200, the circumferential area Z2 is a concave surface. In the lens 200 shown in FIG. 2, the first conversion point TP1 is the boundary between the optical axis area and the circumferential area, that is, the first conversion point TP1 is the boundary point between the convex surface and the concave surface.

On the other hand, the unevenness of the optical axis area can be judged according to the judgment method of ordinary knowledge in the field, that is, the sign of the paraxial curvature radius (abbreviated as R value) is used to judge the optical axis area surface of the lens. Shaped bumps. The R value can be commonly used in optical design software, such as Zemax or CodeV. The R value is also commonly found in the lens data sheet of optical design software. For the object side, when the R value is positive, it is determined that the optical axis area on the object side is convex; when the R value is negative, it is determined that the optical axis area on the object side is concave. Conversely, for the image side surface, when the R value is positive, it is determined that the optical axis area of the image side surface is concave; when the R value is negative, it is determined that the optical axis area of the image side surface is convex. The result of this method is consistent with the result of the aforementioned method of judging by the intersection of the ray/ray extension line and the optical axis. The method of judging the intersection of the ray/ray extension line and the optical axis is that the focus of a ray parallel to the optical axis is located on the lens The object side or the image side to determine the surface unevenness. The "a region is convex (or concave)", "a region is convex (or concave)" or "a convex (or concave) region" described in this manual can be used interchangeably.

Figs. 3 to 5 provide examples of determining the surface shape and area boundaries of the lens area in each case, including the aforementioned optical axis area, circumferential area, and relay area.

FIG. 3 is a radial cross-sectional view of the lens 300. 3, the image side surface 320 of the lens 300 has only one transition point TP1 within the optical boundary OB. The optical axis area Z1 and the circumferential area Z2 of the image side surface 320 of the lens 300 are shown in FIG. 3. The R value of the image side surface 320 is positive (that is, R>0), and therefore, the optical axis area Z1 is a concave surface.

Generally speaking, the surface shape of each area bounded by the conversion point will be opposite to the surface shape of the adjacent area. Therefore, the conversion point can be used to define the conversion of the surface shape, that is, the conversion point changes from a concave surface to a convex surface or from a convex surface to a concave surface. In FIG. 3, since the optical axis area Z1 is a concave surface and the surface shape changes at the transition point TP1, the circumferential area Z2 is a convex surface.

FIG. 4 is a radial cross-sectional view of the lens 400. Referring to FIG. 4, the object side 410 of the lens 400 has a first switching point TP1 and a second switching point TP2. The optical axis area Z1 of the object side surface 410 is defined between the optical axis I and the first conversion point TP1. The R value of the side surface 410 of the object is positive (that is, R>0), and therefore, the optical axis area Z1 is a convex surface.

A circumferential area Z2 is defined between the second transition point TP2 and the optical boundary OB of the object side surface 410 of the lens 400, and the circumferential area Z2 of the object side surface 410 is also a convex surface. In addition, a relay zone Z3 is defined between the first transition point TP1 and the second transition point TP2, and the relay zone Z3 of the object side surface 410 is a concave surface. 4 again, the object side surface 410 includes the optical axis area Z1 between the optical axis I and the first conversion point TP1 radially outward from the optical axis I, and is located between the first conversion point TP1 and the second conversion point TP2. The relay zone Z3 and the circumferential zone Z2 between the second switching point TP2 and the optical boundary OB of the object side surface 410 of the lens 400. Since the optical axis zone Z1 is a convex surface, the surface shape is transformed from the first switching point TP1 to a concave surface, so the relay zone Z3 is a concave surface, and the surface shape is transformed from the second switching point TP2 to a convex surface, so the circumferential zone Z2 is a convex surface.

FIG. 5 is a radial cross-sectional view of the lens 500. The object side 510 of the lens 500 has no transition point. For a lens surface without a conversion point, such as the object side 510 of the lens 500, 0-50% of the distance from the optical axis I to the optical boundary OB of the lens surface is defined as the optical axis area, from the optical axis I to the lens surface. 50~100% of the distance between the boundaries OB is the circumferential area. Referring to the lens 500 shown in FIG. 5, 50% of the distance from the optical axis I to the optical boundary OB on the surface of the lens 500 is defined as the optical axis zone Z1 of the object side surface 510. The R value of the side surface 510 of the object is positive (that is, R>0), and therefore, the optical axis area Z1 is convex. Since the object side surface 510 of the lens 500 has no transition point, the circumferential area 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 area Z2.

6 is a schematic diagram of the optical imaging lens of the first embodiment of the present invention, and FIGS. 7A to 7D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the first embodiment. 6 first, the optical imaging lens 10 of the first embodiment of the present invention includes a first lens 1 and a second lens 2 along an optical axis I of the optical imaging lens 10 from the object side A1 to the image side A2. , A third lens 3, an aperture 0, a fourth lens 4, a fifth lens 5 and a filter 9. When the light emitted by an object to be photographed enters the optical imaging lens 10, and sequentially passes through the first lens 1, the second lens 2, the third lens 3, the aperture 0, the fourth lens 4, the fifth lens 5 and the filter After the film 9, an image is formed on an image plane 99 (Image Plane). The filter 9 is, for example, an infrared cut-off filter, which is provided between the fifth lens 5 and the imaging surface 99. It is supplemented that the object side A1 is the side facing the object to be photographed, and the image side A2 is the side facing the imaging surface 99.

In this embodiment, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, and the filter 9 of the optical imaging lens 10 each have an object-side A1 and make The side surfaces 15, 25, 35, 45, 55, 95 of the object through which the imaging light passes and an image side 16, 26, 36, 46, 56, 96 that faces the image side A2 and allows the imaging light to pass through.

The first lens 1 is the first lens with a refractive index equal to zero mm ^- 1 from the object side to the image side. The material of the first lens 1 is glass. Both the object side 15 and the image side 16 of the first lens 1 are flat surfaces. The optical axis area 15p1 of the object side surface 15 of the first lens 1 is a flat surface. The circumferential area 15p2 of the object side surface 15 of the first lens 1 is a flat surface. The optical axis area 16p1 of the image side surface 16 of the first lens 1 is a flat surface. The circumferential area 16p2 of the image side surface 16 of the first lens 1 is a flat surface.

The second lens 2 is the first lens having refractive power counted from the first lens 1 to the image side A2. The second lens 2 has a negative refractive power. The material of the second lens 2 is plastic. The optical axis area 251 of the object side surface 25 of the second lens 2 is convex, and the circumferential area 253 thereof is convex. The optical axis area 262 of the image side surface 26 of the second lens 2 is concave, and the circumferential area 264 thereof is concave. In this embodiment, both the object side surface 25 and the image side surface 26 of the second lens 2 are aspherical surfaces.

The third lens 3 is the second lens having refractive power from the first lens 1 to the image side A2. The third lens 3 has positive refractive power. The material of the third lens 3 is glass. The object side 35 of the third lens 3 is flat. The optical axis area 35p1 of the object side surface 35 of the third lens 3 is a flat surface, and the circumferential area 35p2 of the object side surface 35 of the third lens 3 is a flat surface. The optical axis area 361 of the image side surface 36 of the third lens 3 is convex, and the circumferential area 363 thereof is convex. In this embodiment, the image side surface 36 of the third lens 3 is a spherical surface.

The aperture 0 is arranged between the third lens 3 and the fourth lens 4.

The fourth lens 4 is the first lens with refractive power counted from the aperture 0 to the image side A2. The fourth lens 4 has positive refractive power. The material of the fourth lens 4 is plastic. The optical axis area 451 of the object side 45 of the fourth lens 4 is convex, and the circumferential area 453 thereof is convex. The optical axis area 461 of the image side 46 of the fourth lens 4 is convex, and the circumferential area 463 is convex. In this embodiment, both the object side 45 and the image side 46 of the fourth lens 4 are aspherical.

The fifth lens 5 is the second lens having refractive power counted from the aperture 0 to the image side A2. The fifth lens 5 has positive refractive power. The material of the fifth lens 5 is plastic. The optical axis area 552 of the object side surface 55 of the fifth lens 5 is concave, and its circumferential area 554 is concave. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is convex, and its circumferential area 564 is concave. In this embodiment, both the object side 55 and the image side 56 of the fifth lens 5 are aspherical.

In addition, in this embodiment, the fourth lens 4 and the fifth lens 5 are filled with colloid, film or cement material to form a cemented lens.

The optical imaging lens 10 of the first embodiment has good thermal stability. For example, the optical imaging lens 10 is based on a normal temperature of 20 ^o C, and its focal shift (Focal shift) is 0.0000 millimeters (mm), and the focal shift of the optical imaging lens 10 at -20 ^o C is -0.0228 millimeters (mm), the focal length of the optical imaging lens 10 is offset at 80 ^o C of 0.0423 millimeters (mm), but the present invention is not limited thereto.

Other detailed optical data of the first embodiment is shown in FIG. 8, and the overall system focal length (Effective Focal Length, EFL) of the optical imaging lens 10 of the first embodiment is 1.635 mm (Millimeter, mm), half field of view, HFOV) is 50.648°, the system length is 14.713 mm, the aperture value (F-number, Fno) is 1.830, and the image height is 2.340 mm, where the system length is from the object side 15 of the first lens 1 to the imaging surface The distance of 99 on the optical axis I.

...(1)               Y：非球面曲線上的點與光軸的距離；               Z：非球面深度；               （非球面上距離光軸為Y的點，與相切於非球面光軸上頂點之切面，兩者間的垂直距離）；               R：透鏡表面之曲率半徑；               K：圓錐係數；               a_i ：第i階非球面係數。In addition, in this embodiment, the six surfaces of the object side surface 25, 45, 55 and the image side surface 26, 46, 56 mentioned above are all even aspheric surfaces, and these aspheric surfaces are defined by the following formula :

...(1) Y: the distance between the point on the aspherical curve and the optical axis; Z: the depth of the aspherical surface; (the point on the aspherical surface that is Y from the optical axis, and the tangent to the vertex on the aspherical optical axis , The vertical distance between the two); R: the radius of curvature of the lens surface; K: the conic coefficient; a _i : the i-th order aspheric coefficient.

The aspheric coefficients of the above-mentioned object side surfaces 25, 45, 55 and image side surfaces 26, 46, 56 in formula (1) are shown in FIG. 9. Wherein, the field number 25 in FIG. 9 indicates that it is the aspheric coefficient of the object side surface 25 of the second lens 2, and the other fields can be deduced by analogy. It should be noted that since the fourth lens 4 and the fifth lens 5 are cemented with each other to be a cemented lens, the aspheric coefficient of the image side 46 can refer to the aspheric coefficient of the object side 55.

In addition, the relationship between important parameters in the optical imaging lens 10 of the first embodiment is shown in FIG. 46, where the unit of the parameter Fno in FIG. 46 is dimensionless, and the unit of the parameter HFOV is degree (°), The units of the field "EFL" and the field "SR" to the field "AAG" are millimeters (mm), and the units of the other fields are dimensionless. In addition, the column below "first" in the table in FIG. 46 represents the relevant optical parameters of the first embodiment, and the rest can be deduced by analogy. Among them, T1 is the thickness of the first lens 1 on the optical axis I; T2 is the thickness of the second lens 2 on the optical axis I; T3 is the thickness of the third lens 3 on the optical axis I; T 4 is the thickness of the third lens 3 on the optical axis I 4 The thickness on the optical axis I; T5 is the thickness of the fifth lens 5 on the optical axis I; G12 is the distance from the image side 16 of the first lens 1 to the object side 25 of the second lens 2 on the optical axis I, also It is the air gap between the first lens 1 and the second lens 2 on the optical axis I; G23 is the distance from the image side 26 of the second lens 2 to the object side 35 of the third lens 3 on the optical axis I, which is the second The air gap between lens 2 and third lens 3 on optical axis I; G34 is the distance between the image side 36 of the third lens 3 and the object side 45 of the fourth lens 4 on the optical axis I, that is, the distance between the third lens 3 and the The air gap of the fourth lens 4 on the optical axis I; G45 is the distance from the image side 46 of the fourth lens 4 to the object side 55 of the fifth lens 5 on the optical axis I, that is, the fourth lens 4 and the fifth lens 5 Air gap on the optical axis I; G5F is the distance from the image side 56 of the fifth lens 5 to the object side 95 of the filter 9 on the optical axis I; AAG is the distance between the first lens 1 and the second lens 2 The air gap on the optical axis I, the air gap between the second lens 2 and the third lens 3 on the optical axis I, the air gap between the third lens 3 and the fourth lens 4 on the optical axis I, and the first The sum of the air gaps on the optical axis I between the four lens 4 and the fifth lens 5, that is, the sum of G12, G23, G34, and G45; ALT is the first lens 1, the second lens 2, and the third lens 3. , The total thickness of the fourth lens 4 and the fifth lens 5 on the optical axis I, that is, the sum of T1, T2, T3, T4, and T5; TL is the object side 15 of the first lens 1 to the image side of the fifth lens 5 56 The distance on the optical axis I; TTL is the distance from the object side 15 of the first lens 1 to the imaging surface 100 on the optical axis I; BFL is the image side 56 of the fifth lens 5 to the imaging surface 100 on the optical axis I HFOV is the half angle of view of optical imaging lens 1; ImgH is the image height of optical imaging lens 1; and EFL is the system focal length of optical imaging lens 1. In addition, redefine: L2A1R is the effective radius of the object side 25 of the second lens 2; SR is the effective radius of the aperture 0; f1 is the focal length of the first lens 1; f2 is the focal length of the third lens 2 The focal length of 3; f4 is the focal length of the fourth lens 4; f5 is the focal length of the fifth lens 5; n1 is the refractive index of the first lens 1; n2 is the refractive index of the second lens 2; n3 is the third lens 3 Rate; n4 is the refractive index of the fourth lens 4; n5 is the refractive index of the fifth lens 5; V1 is the Abbe's number of the first lens 1; V2 is the Abbe's number of the second lens 2; 3 V3 V4 is the Abbe coefficient of the fourth lens 4; and V5 is the Abbe coefficient of the fifth lens 5.

With reference to FIGS. 7A to 7D, the diagrams in FIG. 7A illustrate the Longitudinal Spherical Aberration of the first embodiment, and the diagrams in FIGS. 7B and 7C illustrate the first embodiment when its wavelength is 470 nm. , 555 nm and 650 nm, on the imaging surface 99, the field curvature aberration in the sagittal direction and the field curvature aberration in the tangential direction on the imaging plane 99. The diagram in Figure 7D illustrates the first implementation For example, when the wavelengths are 470 nm, 555 nm, and 650 nm, the distortion aberration on the imaging surface 99 (Distortion Aberration). The longitudinal spherical aberration diagram of this first embodiment is shown in Fig. 7A. The curves formed by each wavelength are very close and approach the middle, indicating that off-axis rays of different heights of each wavelength are concentrated near the imaging point. The deflection amplitude of the wavelength curve can be seen that the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.030 mm, so the first embodiment does significantly improve the spherical aberration of the same wavelength. In addition, three representative wavelengths The distances between each other are also quite close, which means that the imaging positions of light of different wavelengths have been quite concentrated, so that the chromatic aberration has also been significantly improved.

In the two field curvature aberration diagrams in Figures 7B and 7C, the field curvature aberrations of the three representative wavelengths in the entire field of view fall within ±0.08 mm, indicating that the optical system of the first embodiment can effectively eliminate Aberration. The distortion aberration diagram in FIG. 7D shows that the distortion aberration of the first embodiment is maintained within ±15%, indicating that the distortion aberration of the first embodiment meets the imaging quality requirements of the optical system. It shows that compared with the existing optical lens, the first embodiment can still provide good imaging quality under the condition that the system length has been shortened to about 14.713 mm.

10 is a schematic diagram of an optical imaging lens according to a second embodiment of the present invention, and FIGS. 11A to 11D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the second embodiment. Please refer to FIG. 10 first, a second embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients, and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. It should be noted here that, in order to clearly show the drawing, the reference numerals with a similar surface shape to the first embodiment are omitted in FIG. 10.

The detailed optical data of the optical imaging lens 10 of the second embodiment is shown in FIG. 12, and the overall system focal length of the optical imaging lens 10 of the second embodiment is 1.667 mm, the half angle of view (HFOV) is 57.089°, and the aperture value (Fno ) Is 1.830, the system length is 14.997 mm, and the image height is 2.340 mm.

As shown in FIG. 13, it is the aspheric coefficients of the object side surface and the image side surface of the partial lens in the formula (1) in the second embodiment.

In addition, the relationship between important parameters in the optical imaging lens 10 of the second embodiment is shown in FIG. 46.

In the longitudinal spherical aberration diagram of the second embodiment in FIG. 11A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.025 mm. In the two field curvature aberration diagrams in FIGS. 11B and 11C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.10 mm. The distortion aberration diagram in FIG. 11D shows that the distortion aberration of the second embodiment is maintained within the range of ±10%. In this embodiment, the focal length shift of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal length shift of the optical imaging lens 10 is -0.0081 mm at -20 ^o C, and the focal length of the optical imaging lens 10 The focus shift is 0.0346 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the second embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the second embodiment compared with the first embodiment is that the half angle of view of the second embodiment is larger than that of the first embodiment. The distortion aberration of the second embodiment is smaller than that of the first embodiment. Regardless of whether it is at -20 degrees or 80 degrees, the absolute value of the focus offset of the second embodiment is smaller than the absolute value of the focus offset of the first embodiment.

14 is a schematic diagram of the optical imaging lens of the third embodiment of the present invention, and FIGS. 15A to 15D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the third embodiment. Please refer to FIG. 14, a third embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients, and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. It should be noted here that, in order to clearly show the drawing, the reference numerals similar to the first embodiment are omitted in FIG. 14.

The detailed optical data of the optical imaging lens 10 of the third embodiment is shown in FIG. 16, and the overall system focal length of the optical imaging lens 10 of the third embodiment is 2.015 mm, the half angle of view (HFOV) is 45.313°, and the aperture value (Fno ) Is 1.830, the system length is 14.473 mm, and the image height is 2.340 mm.

As shown in FIG. 17, it is the aspheric coefficients of the object side surface and the image side surface of the partial lens in the formula (1) in the third embodiment.

In addition, the relationship among the important parameters in the optical imaging lens 10 of the third embodiment is shown in FIG. 46.

In the longitudinal spherical aberration diagram of the third embodiment in FIG. 15A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.033 mm. In the two field curvature aberration diagrams in FIGS. 15B and 15C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.05 mm. The distortion aberration diagram in FIG. 15D shows that the distortion aberration of the third embodiment is maintained within the range of ±18%. In this embodiment, the focal length offset of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal length offset of the optical imaging lens 10 is -0.0089 mm at -20 ^o C, and the optical imaging lens 10 The focal length shift is 0.0258 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the third embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the third embodiment compared with the first embodiment is that the system length of the third embodiment is smaller than that of the first embodiment. The curvature of field aberration of the third embodiment is smaller than that of the first embodiment. Regardless of whether it is at -20 degrees or 80 degrees, the absolute value of the focus offset of the third embodiment is smaller than that of the first embodiment.

18 is a schematic diagram of the optical imaging lens of the fourth embodiment of the present invention, and FIGS. 19A to 19D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the fourth embodiment. 18, a fourth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients, and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. It should be noted here that, in order to clearly show the drawing, some reference numerals with a surface shape similar to the first embodiment are omitted in FIG. 18.

The detailed optical data of the optical imaging lens 10 of the fourth embodiment is shown in FIG. 20, and the overall system focal length of the optical imaging lens 10 of the fourth embodiment is 1.540 mm, the half angle of view (HFOV) is 45.014°, and the aperture value (Fno ) Is 1.830, the system length is 13.855 mm, and the image height is 2.340 mm.

As shown in FIG. 21, in the fourth embodiment, the aspheric coefficients of the object side surface and the image side surface of the partial lens in the formula (1).

In addition, the relationship between important parameters in the optical imaging lens 10 of the fourth embodiment is shown in FIG. 46.

In the longitudinal spherical aberration diagram of the fourth embodiment in FIG. 19A, the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.033 mm. In the two field curvature aberration diagrams in FIGS. 19B and 19C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.06 mm. The distortion aberration diagram in FIG. 19D shows that the distortion aberration of the fourth embodiment is maintained within the range of ±20%. In this embodiment, the focal length shift of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal length shift of the optical imaging lens 10 is -0.0065 mm at -20 ^o C, and the focal length shift of the optical imaging lens 10 The focal length shift is 0.0265 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the fourth embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the fourth embodiment compared with the first embodiment is that the system length of the fourth embodiment is smaller than that of the first embodiment. The curvature of field aberration of the fourth embodiment is smaller than that of the first embodiment. The absolute value of the focus offset of the fourth embodiment is less than the absolute value of the focus offset of the first embodiment regardless of whether it is at -20 degrees or at an ambient temperature of 80 degrees.

22 is a schematic diagram of the optical imaging lens of the fifth embodiment of the present invention, and FIGS. 23A to 23D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fifth embodiment. Please refer to FIG. 22. A fifth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients, and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. It should be noted here that, in order to clearly show the drawing, some reference numerals with similar shapes to those of the first embodiment are omitted in FIG. 22.

The detailed optical data of the optical imaging lens 10 of the fifth embodiment is shown in FIG. 24, and the overall system focal length of the optical imaging lens 10 of the fifth embodiment is 2.712 mm, the half angle of view (HFOV) is 34.179°, and the aperture value (Fno ) Is 1.830, the system length is 14.473 mm, and the image height is 2.340 mm.

As shown in FIG. 25, in the fifth embodiment, the aspheric coefficients of the object side surface and the image side surface of the partial lens in formula (1).

In addition, the relationship between important parameters in the optical imaging lens 10 of the fifth embodiment is shown in FIG. 46.

In the longitudinal spherical aberration diagram of the fifth embodiment in FIG. 23A, the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.033 mm. In the two field curvature aberration diagrams in FIGS. 23B and 23C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.08 mm. The distortion aberration diagram in FIG. 23D shows that the distortion aberration of the fifth embodiment is maintained within the range of ±28%. In this embodiment, the focal length offset of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal length offset of the optical imaging lens 10 is -0.0035 mm at -20 ^o C, and the optical imaging lens 10 The focus shift is 0.0393 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the fifth embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the fifth embodiment compared with the first embodiment is that the system length of the fifth embodiment is smaller than that of the first embodiment. Regardless of whether it is at -20 degrees or 80 degrees, the absolute value of the focus offset of the fifth embodiment is smaller than that of the first embodiment.

26 is a schematic diagram of the optical imaging lens of the sixth embodiment of the present invention, and FIGS. 27A to 27D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the sixth embodiment. Please refer to FIG. 26. A sixth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment. The differences between the two are as follows: optical data, aspheric coefficients, and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. In addition, in the sixth embodiment, the optical axis area 151 of the object side surface 15 of the first lens 1 is a convex surface, and the circumferential area 153 thereof is a convex surface. The optical axis area 162 of the image side surface 16 of the first lens 1 is concave, and the circumferential area 164 thereof is concave. It should be noted here that, in order to clearly show the drawing, the reference numerals similar to the first embodiment are omitted in FIG. 26.

The detailed optical data of the optical imaging lens 10 of the sixth embodiment is shown in FIG. 28, and the overall system focal length of the optical imaging lens 10 of the sixth embodiment is 1.644 mm, the half angle of view (HFOV) is 50.011°, and the aperture value (Fno ) Is 1.830, the system length is 14.627 mm, and the image height is 2.340 mm.

As shown in FIG. 29, in the sixth embodiment, the aspheric coefficients of the object side surface and the image side surface of the partial lens in the formula (1).

In addition, the relationship between important parameters in the optical imaging lens 10 of the sixth embodiment is shown in FIG. 46.

In the longitudinal spherical aberration diagram of the sixth embodiment in FIG. 27A, the deviation of the imaging point of off-axis rays of different heights is controlled within a range of ±0.038 mm. In the two field curvature aberration diagrams in FIGS. 27B and 27C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.05 mm. The distortion aberration diagram in FIG. 27D shows that the distortion aberration of the sixth embodiment is maintained within the range of ±11.3%. In the present embodiment, the focal length of the imaging optical lens 10 is offset at 20 ^o C is 0.0000 mm, the focal length of the optical imaging lens 10 is offset at -20 ^o C is -0.0067 mm, the imaging lens 10 and the optical The focus shift is 0.0324 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the sixth embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the sixth embodiment compared with the first embodiment is that the system length of the sixth embodiment is smaller than that of the first embodiment. The curvature of field aberration of the sixth embodiment is smaller than that of the first embodiment. The distortion aberration of the sixth embodiment is smaller than that of the first embodiment. Regardless of whether it is at -20 degrees or 80 degrees, the absolute value of the focus offset of the sixth embodiment is smaller than that of the first embodiment.

30 is a schematic diagram of the optical imaging lens of the seventh embodiment of the present invention, and FIGS. 31A to 31D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the seventh embodiment. 30, a seventh embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: The optical imaging lens 10 of the seventh embodiment of the present invention is from The object side A1 to the image side A2 include a first lens 1, a second lens 2, a third lens 3, an aperture 0, a fourth lens 4, and a second lens in sequence along an optical axis I of the optical imaging lens 10. Five lenses 5, a sixth lens 6, and a filter 9. When the light emitted by an object to be photographed enters the optical imaging lens 10, it sequentially passes through the first lens 1, the second lens 2, the third lens 3, the aperture 0, the fourth lens 4, the fifth lens 5, and the sixth lens. After the lens 6 and a filter 9, an image is formed on the imaging surface 99. Also, the fifth lens 5 has a negative refractive power.

In this embodiment, the sixth lens 6 of the optical imaging lens 10 has an object side surface 65 facing the object side A1 and passing imaging light, and an image side surface 66 facing the image side A2 and passing imaging light.

The sixth lens 6 is disposed between the fifth lens 5 and the filter 9. The sixth lens 6 has positive refractive power. The material of the sixth lens 6 is plastic. The optical axis area 651 of the object side surface 65 of the sixth lens 6 is convex, and the circumferential area 653 thereof is convex. The optical axis area 661 of the image side surface 66 of the sixth lens 6 is convex, and the circumferential area 664 thereof is concave. In this embodiment, both the object side 65 and the image side 66 of the sixth lens 6 are aspherical.

It should be noted here that, in order to clearly show the drawing, some reference numerals with similar shapes to those of the first embodiment are omitted in FIG. 30.

The optical imaging lens 10 of the seventh embodiment has good thermal stability. For example, the focal shift of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal shift of the optical imaging lens 10 is -0.0006 millimeters (mm) at -20 ^o C, and the optical focal length of the imaging lens 10 is offset at 80 ^o C of 0.0228 millimeters (mm), but the present invention is not limited thereto.

The detailed optical data of the optical imaging lens 10 of the seventh embodiment is shown in FIG. 32, and the overall system focal length of the optical imaging lens 10 of the seventh embodiment is 1.568 mm, the half angle of view (HFOV) is 48.705°, and the aperture value (Fno ) Is 1.830, the system length is 14.108 mm, and the image height is 2.340 mm.

In addition, in the seventh embodiment, the object sides 25, 35, 45, 65 and 26, 36, 46, 66 of the second lens 2, the fourth lens 4, the fifth lens 5, and the sixth lens 6 are the total All eight surfaces are aspherical surfaces, and these aspherical surfaces are defined according to formula (1), which will not be repeated here. The aspheric coefficients of the above surface in formula (1) are shown in Figure 33. Wherein, the field number 25 in FIG. 33 indicates that it is the aspheric coefficient of the object side surface 25 of the second lens 2, and the other fields can be deduced by analogy.

In addition, the relationship among the important parameters in the optical imaging lens 10 of the seventh embodiment is shown in FIG. 47. The unit of the parameter Fno in Figure 47 is dimensionless, the unit of the parameter HFOV is degree (°), and the unit of the field "EFL" and the field "SR" to the field "AAG" is millimeter (mm), others The unit of the field is dimensionless. In addition, the column below "seventh" in the table of FIG. 47 represents the relevant optical parameters of the seventh embodiment, and the rest can be deduced by analogy. The parameter definitions of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, and the fifth lens 5 mentioned in the seventh embodiment are roughly similar to the parameter definitions mentioned in the above paragraph. The difference lies in: T6 is the thickness of the sixth lens 6 on the optical axis I; G56 is the distance from the image side 56 of the fifth lens 5 to the object side 65 of the sixth lens 6 on the optical axis I; G6F is the sixth lens The distance from the image side 66 of 6 to the object side 95 of the filter 9 on the optical axis I; f6 is the focal length of the sixth lens 6; n6 is the refractive index of the sixth lens 6; and V6 is the sixth lens 6 Shell coefficient.

With reference to FIGS. 31A to 31D, the diagram in FIG. 31A illustrates the longitudinal spherical aberration on the imaging surface 99 when the wavelengths of the seventh embodiment are 650 nm, 555 nm and 470 nm. The diagrams in FIG. 31B and FIG. 31C are respectively Illustrate the seventh embodiment when its wavelengths are 650 nm, 555 nm, and 470 nm on the imaging plane 99 regarding the field curvature aberration in the sagittal direction and the field curvature aberration in the tangential direction. The diagram in FIG. 31D illustrates the seventh The distortion aberrations on the imaging surface 99 when the wavelengths of the embodiment are 650 nm, 555 nm, and 470 nm. The longitudinal spherical aberration diagram of the seventh embodiment is shown in Fig. 31A. The curves formed by each wavelength are very close and approach the middle, indicating that off-axis rays of different heights of each wavelength are concentrated near the imaging point. The deflection amplitude of the wavelength curve can be seen that the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.030 mm, so the seventh embodiment does significantly improve the spherical aberration of the same wavelength. In addition, three representative wavelengths The distances between each other are also quite close, which means that the imaging positions of light of different wavelengths have been quite concentrated, so that the chromatic aberration has also been significantly improved.

In the two field curvature diagrams in Figs. 31B and 31C, the field curvature aberrations of the three representative wavelengths in the entire field of view fall within ±0.06 mm, indicating that the optical system of the seventh embodiment can effectively eliminate field curvature Aberration. The distortion diagram in FIG. 31D shows that the distortion aberration of the seventh embodiment is maintained within the range of ±29.5%, indicating that the distortion aberration of the seventh embodiment has met the imaging quality requirements of the optical imaging lens. Compared with the existing optical imaging lens, the seventh embodiment can still provide better imaging quality under the condition that the system length has been shortened to about 14.108 mm. Therefore, the seventh embodiment can maintain good optical performance. , Can shorten the length of the optical imaging lens.

34 is a schematic diagram of the optical imaging lens of the eighth embodiment of the present invention, and FIGS. 35A to 35D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the eighth embodiment. Please refer to FIG. 34 first. Please refer to FIG. 34 first. An eighth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the seventh embodiment, and the differences between the two are as follows: The eighth embodiment of the present invention The optical imaging lens 10 includes a first lens 1, a second lens 2, a third lens 3, an aperture 0, and a first lens in sequence along an optical axis I of the optical imaging lens 10 from the object side A1 to the image side A2. Four lenses 4, a fifth lens 5, a sixth lens 6, a seventh lens 7 and a filter 9. When the light emitted by an object to be photographed enters the optical imaging lens 10, it sequentially passes through the first lens 1, the second lens 2, the third lens 3, the aperture 0, the fourth lens 4, the fifth lens 5, and the sixth lens. After the lens 6, the seventh lens 7 and the filter 9, an image is formed on the imaging surface 99.

In this embodiment, the seventh lens 7 of the optical imaging lens 10 has an object side surface 75 facing the object side A1 through which imaging light passes, and an image side surface 76 facing the image side A2 through which imaging light passes.

The optical axis area 462 of the image side 46 of the fourth lens 4 is concave, and the circumferential area 464 is concave.

The optical axis area 551 of the object side 55 of the fifth lens 5 is convex, and the circumferential area 553 thereof is convex. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is convex, and the circumferential area 563 thereof is convex.

The sixth lens 6 has a negative refractive power. The optical axis area 652 of the object side surface 65 of the sixth lens 6 is concave, and the circumferential area 654 thereof is concave. The optical axis area 661 of the image side surface 66 of the sixth lens 6 is convex, and the circumferential area 663 thereof is convex.

The seventh lens 7 has positive refractive power. The optical axis area 751 of the object side surface 75 of the seventh lens 7 is convex, and the circumferential area 753 thereof is convex. The optical axis area 761 of the image side 76 of the seventh lens 7 is convex, and the circumferential area 763 is concave. In this embodiment, both the object side 75 and the image side 76 of the seventh lens 7 are aspherical.

In addition, in this embodiment, the fifth lens 5 and the sixth lens 6 are filled with colloid, film or cement material to form a cemented lens.

It should be noted here that, in order to clearly show the drawing, the reference numerals in the shape similar to those in the first and seventh embodiments are omitted in FIG. 34.

The optical imaging lens 10 of the eighth embodiment has good thermal stability. For example, the focal shift of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal shift of the optical imaging lens 10 is -0.0008 millimeters (mm) at -20 ^o C, and the optical focal length of the imaging lens 10 is offset at 80 ^o C of 0.0240 millimeters (mm), but the present invention is not limited thereto.

The detailed optical data of the optical imaging lens 10 of the eighth embodiment is shown in FIG. 36, and the overall system focal length of the optical imaging lens 10 of the eighth embodiment is 1.626 mm, the half angle of view (HFOV) is 48.236°, and the aperture value (Fno ) Is 1.830, the system length is 14.633 mm, and the image height is 2.340 mm.

In addition, in the eighth embodiment, the object sides 25, 45, 55, 65, 75 and 26, 46 of the second lens 2, the fourth lens 4, the fifth lens 5, the sixth lens 6 and the seventh lens 7 56, 66, and 76 are like side surfaces, and a total of ten surfaces are aspherical surfaces, and these aspherical surfaces are defined according to formula (1), so I will not repeat them here. The aspheric coefficients of the above surface in formula (1) are shown in Figure 37. Wherein, the field number 25 in FIG. 37 indicates that it is the aspheric coefficient of the object side surface 25 of the second lens 2, and the other fields can be deduced by analogy. It should be noted that since the fifth lens 5 and the sixth lens 6 are cemented with each other to form a cemented lens, the aspheric coefficient of the image side 56 can be referred to the aspheric coefficient of the object side 65.

In addition, the relationship among the important parameters in the optical imaging lens 10 of the eighth embodiment is shown in FIG. 47. The parameter definitions of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6 mentioned in the eighth embodiment are roughly similar to those mentioned in the above paragraphs. The difference between the parameter definitions obtained is: T7 is the thickness of the seventh lens 7 on the optical axis I; G67 is the distance between the image side 66 of the sixth lens 6 and the object side 75 of the seventh lens 7 on the optical axis I; G7F is the distance from the image side 75 of the seventh lens 7 to the object side 95 of the filter 9 on the optical axis I; f7 is the focal length of the seventh lens 7; n7 is the refractive index of the seventh lens 7; and V7 is the first lens. The Abbe coefficient of the seven lens 7.

With reference to FIGS. 35A to 35D, the diagram in FIG. 35A illustrates the longitudinal spherical aberration of the imaging surface 99 at the wavelengths of 650 nm, 555 nm and 470 nm in the eighth embodiment. The diagrams in FIG. 35B and FIG. 35C are respectively The eighth embodiment illustrates the field curvature aberration in the sagittal direction and the tangential direction on the imaging plane 99 when the wavelengths are 650 nm, 555 nm, and 470 nm. The diagram in FIG. 35D illustrates the eighth The distortion aberrations on the imaging surface 99 when the wavelengths of the embodiment are 650 nm, 555 nm, and 470 nm. The longitudinal spherical aberration diagram of the eighth embodiment is shown in FIG. 35A. The curves formed by each wavelength are very close and approach the middle, indicating that off-axis rays of different heights of each wavelength are concentrated near the imaging point. It can be seen from the skew amplitude of the wavelength curve that the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.01 mm, so the eighth embodiment does significantly improve the spherical aberration of the same wavelength. In addition, three representative wavelengths The distances between each other are also quite close, which means that the imaging positions of light of different wavelengths have been quite concentrated, so the chromatic aberration has also been significantly improved.

In the two field curvature diagrams in Figures 35B and 35C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.033 mm, indicating that the optical system of the eighth embodiment can effectively eliminate field curvature Aberration. The distortion diagram in FIG. 35D shows that the distortion aberration of the eighth embodiment is maintained within the range of ±27.6%, indicating that the distortion aberration of the eighth embodiment has met the imaging quality requirements of the optical imaging lens. Compared with the existing optical imaging lens, the eighth embodiment can still provide better imaging quality under the condition that the system length has been shortened to about 14.633 mm. Therefore, the eighth embodiment can maintain good optical performance. , Can shorten the length of the optical imaging lens.

38 is a schematic diagram of the optical imaging lens of the ninth embodiment of the present invention, and FIGS. 39A to 39D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the ninth embodiment. Please refer to FIG. 38, a ninth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. In addition, in the ninth embodiment, the optical axis area 351 of the object side surface 35 of the third lens 3 is convex, and the circumferential area 353 thereof is convex. The fifth lens 5 has a negative refractive power. It should be noted here that, in order to clearly show the drawing, the reference numerals similar to the first embodiment are omitted in FIG. 38.

The detailed optical data of the optical imaging lens 10 of the ninth embodiment is shown in FIG. 40, and the overall system focal length of the optical imaging lens 10 of the ninth embodiment is 2.046 mm, the half angle of view (HFOV) is 44.641°, and the aperture value (Fno ) Is 2.600, the system length is 14.951 mm, and the image height is 2.340 mm.

As shown in FIG. 41, the aspheric coefficients of the object side surface and the image side surface of the partial lens in the formula (1) in the ninth embodiment.

In addition, the relationship between the important parameters in the optical imaging lens 10 of the ninth embodiment is shown in FIG. 47.

In the longitudinal spherical aberration diagram of the ninth embodiment in FIG. 39A, the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.01 mm. In the two field curvature aberration diagrams in Figs. 39B and 39C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.025 mm. The distortion aberration diagram in FIG. 39D shows that the distortion aberration of the ninth embodiment is maintained within the range of ±15.6%. In the present embodiment, the focal length of the imaging optical lens 10 is offset at 20 ^o C is 0.0000 mm, the focal length of the optical imaging lens 10 is offset at -20 ^o C is -0.0024 mm, the imaging lens 10 and the optical The focus shift is 0.0269 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the ninth embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the ninth embodiment over the first embodiment is that the longitudinal spherical aberration of the ninth embodiment is smaller than that of the first embodiment. The curvature of field aberration of the ninth embodiment is smaller than that of the first embodiment. The absolute value of the focus offset of the ninth embodiment is less than the absolute value of the focus offset of the first embodiment regardless of whether it is at -20 degrees or at an ambient temperature of 80 degrees.

42 is a schematic diagram of the optical imaging lens of the tenth embodiment of the present invention, and FIGS. 43A to 43D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the tenth embodiment. Please refer to FIG. 42. A tenth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients, and these lenses 1, 2 The parameters between, 3, 4 and 5 are more or less different. In addition, the optical axis area 351 of the object side surface 35 of the third lens 3 is convex, and the circumferential area 353 thereof is convex. The fourth lens 4 has a negative refractive power. The optical axis area 462 of the image side 46 of the fourth lens 4 is concave, and the circumferential area 464 is concave. The optical axis area 551 of the object side 55 of the fifth lens 5 is convex, and the circumferential area 553 thereof is convex. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is convex, and the circumferential area 563 thereof is convex. It should be noted here that, in order to clearly show the drawing, the reference numerals similar to the first embodiment are omitted in FIG. 42.

The detailed optical data of the optical imaging lens 10 of the tenth embodiment is shown in FIG. 44, and the overall system focal length of the optical imaging lens 10 of the tenth embodiment is 2.255 mm, the half angle of view (HFOV) is 52.800°, and the aperture value (Fno ) Is 2.600, the system length is 14.997 mm, and the image height is 2.340 mm.

As shown in FIG. 45, the aspheric coefficients of the object side surface and the image side surface of the partial lens in the formula (1) in the tenth embodiment.

In addition, the relationship among the important parameters in the optical imaging lens 10 of the tenth embodiment is shown in FIG. 47.

In the longitudinal spherical aberration diagram of the tenth embodiment in FIG. 43A, the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.033 mm. In the two field curvature aberration diagrams in Figs. 43B and 43C, the field curvature aberrations of the three representative wavelengths within the entire field of view fall within ±0.041 mm. The distortion aberration diagram in FIG. 43D shows that the distortion aberration of the tenth embodiment is maintained within the range of ±24%. In this embodiment, the focal length offset of the optical imaging lens 10 is 0.0000 mm at 20 ^o C, the focal length offset of the optical imaging lens 10 is -0.0018 mm at -20 ^o C, and the optical imaging lens 10 The focus shift is 0.0037 mm at 80 ^o C. Therefore, compared with the existing optical imaging lens, the tenth embodiment can achieve good imaging quality with good thermal stability.

According to the above description, the advantage of the tenth embodiment over the first embodiment is that the half angle of view of the tenth embodiment is larger than that of the first embodiment. The absolute value of the focus offset of the tenth embodiment is less than the absolute value of the focus offset of the first embodiment regardless of whether it is at -20 degrees or at an ambient temperature of 80 degrees.

In view of the above, in the optical imaging lens 10 of the embodiment of the present invention, the first lens 1 is the first lens counted from the object side A1 to the image side A2, the refractive index of the first lens 1 is equal to zero mm ^-1 and the first lens 1 One lens 1 is made of low-cost glass material, with the second lens 2 is the first lens with refractive power from the first lens 1 to the image side A2, and the second lens 2 is made of low-cost plastic material, The third lens 3 is the second lens with refractive power from the first lens 1 to the image side A2, the third lens 3 has positive refractive power, and the fourth lens 4 is from the aperture 0 to the image side A2. The first lens has refractive power and at least one of the object side 45 and the image side 46 of the fourth lens 4 is aspherical, and the fifth lens 5 has refractive power from the aperture 0 to the image side A2. Both the object side 55 and the image side 56 of the second lens and the fifth lens 5 are aspherical. The optical imaging lens 10 of the embodiment of the present invention is designed to resist wind, rain, sun, etc. It is tested in harsh environments and is suitable for automotive lenses that are thermally stable, most of the viewing angle, low cost, and distortion aberrations maintained within ±30%.

The longitudinal spherical aberration, astigmatic aberration, and distortion of the various embodiments of the present invention meet the usage specifications. In addition, the three off-axis rays of red, green, and blue representing wavelengths at different heights are all concentrated near the imaging point. It can be seen from the deflection amplitude of each curve that the deviation of the imaging point of off-axis rays of different heights is controlled and has Good spherical aberration, aberration and distortion suppression capabilities. Further referring to the imaging quality data, the distances between the three representative wavelengths of red, green and blue are also quite close to each other, which shows that the present invention has good concentration of light of different wavelengths under various conditions and has excellent dispersion suppression ability, and can produce excellent Image quality.

In the optical imaging lens 10 of the embodiment of the present invention, the conditional formula of 1.250≦L2A1R/ImgH≦2.200 can be further met, which is beneficial for the design of maintaining a better range of half viewing angle and system image height to achieve most of the viewing angle.

In the optical imaging lens 10 of the embodiment of the present invention, the conditional formula of ImgH/SR≦2.800 can be further met, and it is beneficial to realize the design of large aperture and large system image height, and preferably can meet 1.500≦ImgH/SR Conditional expression of ≦2.800.

In the optical imaging lens 10 of the embodiment of the present invention, the conditional formula of 5.000≦TTL/EFL can be further met, which is beneficial to increase the half angle of view, and preferably can meet 5.000≦TTL/EFL≦9.000.

In the optical imaging lens 10 of the embodiment of the present invention, the object side 15 and the image side 16 of the first lens 1 can be further designed to be flat surfaces. With this design, a batch of coating processing can be performed and then cut to avoid grinding glass. Qualitative analysis and procedures such as glass molding help greatly reduce manufacturing difficulty and manufacturing costs. The cost of the two glass lenses added to the third lens is equivalent to the cost of the first glass lens with negative refractive power on the market.

In the optical imaging lens 10 of the embodiment of the present invention, the object side 35 of the third lens 3 can be further designed to be a plane, and this design can help improve the assembly efficiency of tolerances.

In the optical imaging lens 10 of the embodiment of the present invention, there are no more than six lenses with refractive power, which is beneficial to reduce the design difficulty and achieve the purpose of reducing cost.

In the optical imaging lens 10 of the embodiment of the present invention, the fourth lens 4 and the fifth lens 5 can be further cemented, and the image side 46 of the fourth lens 4 is designed to be aspherical and the object side of the fifth lens 5 55 is designed as an aspheric surface, which helps reduce various aberrations and improve imaging quality.

In the optical imaging lens 10 of the embodiment of the present invention, some of the lenses can be made of plastic materials to further reduce the cost. For example, some of the lenses in the optical imaging lens 10 can more satisfy any of the following conditional expressions. One: 12.000≦V2/n2≦19.000 or 32.000≦V2/n2≦37.000, 12.000≦V4/n4≦19.000 or 32.000≦V4/n4≦37.000, 12.000≦V5/n5≦19.000 or 32.000≦V5/n5≦37.000 Among them, the material of the lens that meets any of the above-mentioned conditional formula ranges is a lower-cost plastic material.

In the optical imaging lens 10 of the embodiment of the present invention, the third lens 3 can also be made of glass, and the third lens 3 is arranged in front of the aperture 0, so that the optical imaging lens 10 can be set at -20°C~ The absolute value of the focus offset in an environment of 80°C is less than 0.045 mm. For example, the third lens 3 can more satisfy any of the following conditional expressions: V3/n3≦11.000, 20.000≦V3/n3≦31.000 or 38.000≦V3/n3≦66.000, which meets any of the above-mentioned conditional expression ranges The material of the third lens 3 is low-cost glass material.

Please refer to FIGS. 46 to 47 in conjunction. FIGS. 46 to 47 are table diagrams of various optical parameters of the first embodiment to the tenth embodiment.

For satisfying the following conditional expressions, at least one of the objectives is to maintain the system focal length and optical parameters at an appropriate value, avoid any parameter that is too large to be conducive to the correction of the overall aberration of the optical imaging system, or avoid any parameter If it is too small, it will affect assembly or increase the difficulty of manufacturing. Among them, the optical imaging lens 10 can meet the conditional formula of (EFL+T5)/G23≦2.400, and preferably can meet the conditional formula of 0.200≦(EFL+T5)/G23≦2.400; the optical imaging lens 10 can meet the (EFL+ The conditional expression of T1)/T4≦4.700, which preferably meets the conditional expression of 0.800≦(EFL+T1)/T4≦4.700; The optical imaging lens 10 can meet the condition of (EFL+G34)/(T2+G12)≦3.800 The conditional formula can preferably meet the conditional formula of 1.000≦(EFL+G34)/(T2+G12)≦3.800; The optical imaging lens 10 can meet the conditional formula of (EFL+T2)/(T1+T5)≦2.000, Preferably, it can meet the conditional expression of 0.500≦(EFL+T2)/(T1+T5)≦2.000; The optical imaging lens 10 can meet the conditional expression of (EFL+ALT)/AAG≦4.000, preferably 1.100≦ (EFL+ALT)/AAG≦4.000 conditional expression.

For the following conditional expressions, at least one of the objectives is to maintain the thickness and spacing of each lens at an appropriate value, to avoid any parameter that is too large to be conducive to the overall thinning of the optical imaging lens, or to avoid any parameter that is too small to affect Assemble or increase the difficulty of manufacturing. Among them, the optical imaging lens 10 can meet the conditional formula of TL/BFL≦6.000, preferably, the conditional formula of 2.300≦TL/BFL≦6.000; The optical imaging lens 10 can meet the conditional formula of (T1+T5+G12+G45)/ The conditional expression of T3≦3.100 can preferably be met, 0.800≦(T1+T5+G12+G45)/T3≦3.100; the optical imaging lens 10 can meet the conditional expression of (T1+T2+G12+G45)/G34≦ The conditional expression of 9.200 preferably meets the conditional expression of 1.300≦(T1+T2+G12+G45)/G34≦9.200.

In addition, any combination of the embodiment parameters can be selected to increase the lens limit, so as to facilitate the lens design of the same architecture of the present invention.

In view of the unpredictability of the optical system design, under the framework of the present invention, meeting the above conditional expressions can better shorten the length of the telephoto lens of the present invention, increase the aperture, improve the imaging quality, or increase the assembly yield rate to improve the previous The disadvantages of technology.

The numerical ranges within the maximum and minimum values obtained from the combination ratio relationship of the optical parameters disclosed in the various embodiments of the present invention can be implemented accordingly.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to those defined by the attached patent scope.

100, 200, 300, 400, 500: Lens 15, 25, 35, 45, 55, 65, 75, 95, 110, 410, 510: Object side 16, 26, 36, 46, 56, 66, 76, 96 , 120, 320: Image side 130: Assembly part 211, 212: Parallel light 10: Optical imaging lens 0: Aperture 1: First lens 2: Second lens 3: Third lens 4: Fourth lens 5: Fifth lens 6: sixth lens 7: seventh lens 9: filter 99: imaging surface 15p1, 16p1, 151, 162, 251, 262, 35p1, 361, 451, 461, 462, 551, 552, 561, 651, 652 , 661, 751, 761: Optical axis area 15p2, 16p2, 153, 164, 253, 264, 35p2, 363, 453, 463, 464, 553, 554, 563, 564, 653, 654, 663, 664, 753, 763: circumferential area A1: object side A2: image side CP1: first center point CP2: second center point EL: extension line I: optical axis Lm: edge ray Lc: edge ray OB: optical boundary P: plane R: point TP1: first transition point TP2: second transition point Z1: optical axis area Z2: circumferential area Z3: relay area

Fig. 1 is a schematic diagram illustrating the surface structure of a lens. Fig. 2 is a schematic diagram illustrating the surface concave-convex structure and light focus of a lens. FIG. 3 is a schematic diagram illustrating the surface structure of a lens of Example 1. FIG. FIG. 4 is a schematic diagram illustrating the surface structure of a lens of Example 2. FIG. Fig. 5 is a schematic diagram illustrating the surface structure of a lens of Example 3. 6 is a schematic diagram of the optical imaging lens of the first embodiment of the present invention. 7A to 7D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the first embodiment. FIG. 8 shows detailed optical data of the optical imaging lens of the first embodiment of the present invention. FIG. 9 shows aspheric parameters of the optical imaging lens of the first embodiment of the present invention. FIG. 10 is a schematic diagram of an optical imaging lens according to a second embodiment of the present invention. 11A to 11D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the second embodiment. FIG. 12 shows detailed optical data of the optical imaging lens of the second embodiment of the present invention. FIG. 13 shows the aspherical parameters of the optical imaging lens of the second embodiment of the present invention. FIG. 14 is a schematic diagram of an optical imaging lens according to a third embodiment of the present invention. 15A to 15D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the third embodiment. FIG. 16 shows detailed optical data of the optical imaging lens of the third embodiment of the present invention. FIG. 17 shows the aspheric parameters of the optical imaging lens of the third embodiment of the present invention. FIG. 18 is a schematic diagram of an optical imaging lens according to a fourth embodiment of the present invention. 19A to 19D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fourth embodiment. FIG. 20 shows detailed optical data of the optical imaging lens of the fourth embodiment of the present invention. FIG. 21 shows the aspheric parameters of the optical imaging lens of the fourth embodiment of the present invention. FIG. 22 is a schematic diagram of an optical imaging lens according to a fifth embodiment of the present invention. 23A to 23D are graphs of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fifth embodiment. FIG. 24 shows detailed optical data of the optical imaging lens of the fifth embodiment of the present invention. FIG. 25 shows aspheric parameters of the optical imaging lens of the fifth embodiment of the present invention. FIG. 26 is a schematic diagram of an optical imaging lens according to a sixth embodiment of the present invention. 27A to 27D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the sixth embodiment. FIG. 28 shows detailed optical data of the optical imaging lens of the sixth embodiment of the present invention. Fig. 29 shows aspheric parameters of the optical imaging lens of the sixth embodiment of the present invention. FIG. 30 is a schematic diagram of an optical imaging lens according to a seventh embodiment of the present invention. 31A to 31D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the seventh embodiment. Fig. 32 shows detailed optical data of the optical imaging lens of the seventh embodiment of the present invention. FIG. 33 shows aspheric parameters of the optical imaging lens of the seventh embodiment of the present invention. FIG. 34 is a schematic diagram of the optical imaging lens of the eighth embodiment of the present invention. 35A to 35D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the eighth embodiment. Fig. 36 shows detailed optical data of the optical imaging lens of the eighth embodiment of the present invention. Fig. 37 shows aspheric parameters of the optical imaging lens of the eighth embodiment of the present invention. FIG. 38 is a schematic diagram of an optical imaging lens according to a ninth embodiment of the present invention. 39A to 39D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the ninth embodiment. FIG. 40 shows detailed optical data of the optical imaging lens of the ninth embodiment of the present invention. Fig. 41 shows aspheric parameters of the optical imaging lens of the ninth embodiment of the present invention. FIG. 42 is a schematic diagram of an optical imaging lens according to a tenth embodiment of the present invention. 43A to 43D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the tenth embodiment. FIG. 44 shows detailed optical data of the optical imaging lens of the tenth embodiment of the present invention. Fig. 45 shows aspheric parameters of the optical imaging lens of the tenth embodiment of the present invention. FIG. 46 shows the values of important parameters and their relational expressions of the optical imaging lens of the first to sixth embodiments of the present invention. FIG. 47 shows the values of important parameters and their relational expressions of the optical imaging lens of the seventh to tenth embodiments of the present invention.

15, 25, 35, 45, 55, 95: side of the object

16, 26, 36, 46, 56, 96: like side

10: Optical imaging lens

0: aperture

1: the first lens

2: second lens

3: The third lens

4: fourth lens

5: The fifth lens

9: filter

99: imaging surface

15p1, 16p1, 251, 262, 35p1, 361, 451, 461, 552, 561: Optical axis area

15p2, 16p2, 253, 264, 35p2, 363, 453, 463, 554, 564: circumferential area

A1: Object side

A2: Image side

I: Optical axis

Claims (20)

An optical imaging lens includes a first lens, a second lens, a third lens, an aperture, a fourth lens, and a fifth lens in sequence along an optical axis from an object side to an image side, and Each of the first lens to the fifth lens includes an object side surface that faces the object side and allows imaging light to pass through, and an image side surface that faces the image side and allows imaging light to pass; the first lens is from the object side to the image The first lens whose refractive power from the side is equal to zero mm ^-1 ; the second lens is the first lens with refractive power from the first lens to the image side; the third lens is from the The first lens is the second lens with refractive power counted from the image side, the third lens has positive refractive power; the fourth lens is the first lens with refractive power counted from the aperture to the image side A lens, at least one of the object side surface of the fourth lens and the image side surface of the fourth lens is aspherical; and the fifth lens is the first lens having refractive power from the aperture to the image side Two lenses, the object side surface of the fifth lens and the image side surface of the fifth lens are aspherical. For example, the optical imaging lens of item 1 in the scope of patent application, wherein the optical imaging lens further satisfies the following conditional formula: 1.250≦L2A1R/ImgH≦2.200, where L2A1R is an effective radius of the object side of the second lens, and ImgH is an image height of the optical imaging lens. For example, the optical imaging lens of the first item in the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: ImgH/SR≦2.800, where ImgH is an image height of the optical imaging lens, and SR is an aperture of the optical imaging lens Effective radius. An optical imaging lens includes a first lens, a second lens, a third lens, an aperture, a fourth lens, and a fifth lens in sequence along an optical axis from an object side to an image side, and Each of the first lens to the fifth lens includes an object side surface that faces the object side and allows imaging light to pass through, and an image side surface that faces the image side and allows imaging light to pass; the first lens is from the object side to the image The first lens whose refractive power from the side is equal to zero mm ^-1 ; the second lens is the first lens with refractive power from the first lens to the image side; the third lens is from the The first lens is the second lens with refractive power counted from the image side; the fourth lens is the first lens with refractive power counted from the aperture to the image side, and the object of the fourth lens At least one of the side surface and the image side surface of the fourth lens is aspherical; the fifth lens is the second lens with refractive power counted from the aperture to the image side, and the object of the fifth lens The side surface and the image side surface of the fifth lens are both aspherical; wherein, the optical imaging lens satisfies the following conditional formula: 1.250≦L2A1R/ImgH≦2.200, where L2A1R is an effective object side surface of the second lens Radius, and ImgH is an image height of the optical imaging lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies any of the following conditions: 12.000≦V2/n2≦19.000 or 32.000≦V2/n2≦37.000, where V2 is the An Abbe number of the second lens, and n2 is a refractive index of the second lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies any of the following conditions: V3/n3≦11.000, 20.000≦V3/n3≦31.000 or 38.000≦V3/n3≦66.000 , Where V3 is an Abbe number of the third lens, and n3 is a refractive index of the third lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the object side surface of the first lens and the image side surface of the first lens are both flat. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens further satisfies the following conditional formula: (EFL+T5)/G23≦2.400, where EFL is a system focal length of the optical imaging lens , T5 is a thickness of the fifth lens on the optical axis, and G23 is an air gap between the second lens and the third lens on the optical axis. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: (EFL+G34)/(T2+G12)≦3.800, EFL is one of the optical imaging lens System focal length, G34 is an air gap between the third lens and the fourth lens on the optical axis, T2 is a thickness of the second lens on the optical axis, and G12 is the first lens and the An air gap on the optical axis between the second lenses. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens further satisfies the following conditional formula: (T1+T5+G12+G45)/T3≦3.100, T1 is the first lens in the A thickness on the optical axis, T5 is a thickness of the fifth lens on the optical axis, G12 is an air gap on the optical axis between the first lens and the second lens, G45 is the fourth lens There is an air gap between the lens and the fifth lens on the optical axis, and T3 is a thickness of the third lens on the optical axis. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: (EFL+ALT)/AAG≦4.000, EFL is a system focal length of the optical imaging lens, ALT Is the total thickness of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens on the optical axis, and AAG is the thickness between the first lens and the second lens An air gap on the optical axis, an air gap between the second lens and the third lens on the optical axis, an air gap between the third lens and the fourth lens on the optical axis And an air gap sum of an air gap on the optical axis between the fourth lens and the fifth lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the absolute value of the focal length offset of the optical imaging lens in the environment of -20°C~80°C is less than 0.045 mm. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies any of the following conditions: 12.000≦V4/n4≦19.000 or 32.000≦V4/n4≦37.000, where V4 is the An Abbe number of the fourth lens, and n4 is a refractive index of the fourth lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies any of the following conditions: 12.000≦V5/n5≦19.000 or 32.000≦V5/n5≦37.000, where V5 is the An Abbe number of the fifth lens, and n5 is a refractive index of the fifth lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the object side of the third lens is a plane. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: 5.000≦TTL/EFL, where TTL is the distance between the object side and the imaging surface of the first lens A distance on the optical axis, and EFL is a system focal length of the optical imaging lens. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: (EFL+T1)/T4≦4.700, EFL is a system focal length of the optical imaging lens, T1 Is a thickness of the first lens on the optical axis, and T4 is a thickness of the fourth lens on the optical axis. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: (EFL+T2)/(T1+T5)≦2.000, EFL is one of the optical imaging lens The system focal length, T2 is a thickness of the second lens on the optical axis, T1 is a thickness of the first lens on the optical axis, and T5 is a thickness of the fifth lens on the optical axis. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: (T1+T2+G12+G45)/G34≦9.200, T1 is the first lens in the A thickness on the optical axis, T2 is a thickness of the second lens on the optical axis, G12 is an air gap on the optical axis between the first lens and the second lens, G45 is the fourth lens An air gap between the lens and the fifth lens on the optical axis, and G34 is an air gap between the third lens and the fourth lens on the optical axis. For example, the optical imaging lens of item 1 or item 4 of the scope of patent application, wherein the optical imaging lens satisfies the following conditional formula: TL/BFL≦6.000, TL is the distance from the object side of the first lens to the fifth lens A distance from the image side surface on the optical axis, and BFL is a distance from the image side surface of the fifth lens to an imaging surface on the optical axis.

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