TWI647478B - Optical imaging lens - Google Patents

Abstract

An optical imaging lens comprising first, second, third, fourth, fifth and sixth lenses from the object side to the image side. Each lens includes an object side and an image side. Each of the first to sixth lenses has a refractive power. The second lens has a negative refractive power. The optical axis region of the image side surface of the third lens is a concave surface. There is no air gap between the fourth lens and the fifth lens. The ratio of a distance from the image side of the first lens to the object side of the fourth lens on the optical axis and the thickness of the first lens on the optical axis is less than or equal to 3.000.

Description

Optical imaging lens

The present invention relates to an optical component, and more particularly to an optical imaging lens.

The specifications of portable electronic products are changing with each passing day, and the key components - optical imaging lenses are also more diversified. The application field of automotive lenses continues to increase with the advancement of technology. For example, reversing, 360-degree panoramic views, lane shifting systems, rear monitoring, and advanced driver assistance systems (ADAS) require automotive lenses. However, compared with the imaging quality of the mobile phone lens, the imaging quality of the vehicle lens still has a lot of room for improvement.

However, the design of the optical lens is not simply to reduce the size of the lens with good imaging quality to produce an optical lens with both image quality and miniaturization. The design process involves not only the material properties, but also the production and assembly yield. The actual problem of the face. Therefore, how to improve the imaging quality of the vehicle lens under the premise of maintaining a large aperture, a viewing angle and a lens length is an issue that is constantly being explored in the industry.

The present invention provides an optical imaging lens having good optical parameters and good imaging quality.

An embodiment of the present invention provides an optical imaging lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a first surface from an object side to an image side. Six lenses. Each of the first to sixth lenses includes an object side facing the object side and passing the imaging light and an image side facing the image side and passing the imaging light. The first lens is the first lens having a refractive power from the object side to the image side. The second lens is a second lens having a refractive power from the object side to the image side, and the second lens has a negative refractive power. The third lens is a third lens having a refractive power from the object side to the image side, and an optical axis region of the image side surface of the third lens is a concave surface. The fourth lens is a third lens having a refractive power from the image side to the object side. The fifth lens is a second lens having a refractive power from the image side to the object side. The sixth lens is the first lens having a refractive power from the image side to the object side. There is no air gap between the fourth lens and the fifth lens. The ratio of a distance from the image side of the first lens to the object side of the fourth lens on the optical axis and the thickness of the first lens on the optical axis is less than or equal to 3.000.

Based on the above, the optical imaging lens of the embodiment of the present invention has an advantageous effect of: by satisfying the above-described number of lenses having a refractive power, the second lens has a negative refractive power, and the optical axis region of the image side of the third lens is There is no air gap between the concave surface, the fourth lens and the fifth lens, and the conditional expression (G12+T2+G23+T3+G34)/T1≦3.000, and the optical imaging lens of the embodiment of the present invention can have good optical parameters and good Imaging quality.

The above described features and advantages of the invention will be apparent from the following description.

The optical system of the present specification includes at least one lens that receives imaging light of the incident optical system that is parallel to the optical axis to a relative half-angle of view (HFOV). The imaging light is imaged on the imaging surface by an optical system. The phrase "a lens having a positive refractive power (or a negative refractive power)" means that the near-axis refractive power of the lens calculated by Gaussian optical theory is positive (or negative). The term "side of the lens (or image side)" is defined as the specific range in which the imaging light passes through the surface of the lens. The imaging light includes at least two types of light: a chief ray Lc and a marginal ray Lm (as shown in FIG. 1). The object side (or image side) of the lens may be divided into different regions according to different positions, including an optical axis region, a circumferential region, or one or more relay regions in some embodiments, and the description of the regions will be detailed below. set forth.

FIG. 1 is a radial cross-sectional view of the lens 100. Two reference points on the surface of the lens 100 are defined: a center point and a transition point. The center point of the lens surface is the intersection of the surface and the optical axis I. As illustrated 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 transition 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 defining the surface of the lens is a point at which the radially outermost edge ray Lm passing through the lens surface intersects the lens surface. All switching points are located between the optical axis I and the optical boundary OB of the lens surface. In addition, if there are a plurality of switching points on the surface of the single lens, the switching points are sequentially named from the first switching point by the radially outward direction. For example, the first switching point TP1 (closest to the optical axis I), the second switching point TP2 (shown in FIG. 4), and the Nth switching point (farthest from the optical axis I).

The range defined from the center point to the first transition point TP1 is an optical axis region, wherein the optical axis region includes a center point. The area defining the Nth transition point furthest from the optical axis I radially outward to the optical boundary OB is a circumferential area. In some embodiments, a relay region between the optical axis region and the circumferential region may be further included, and the number of relay regions depends on the number of switching points.

When the light of the parallel optical axis I passes through a region, if the light is deflected toward the optical axis I and the intersection with the optical axis I is at the lens image side A2, the region is convex. When the light of the parallel optical axis I passes through a region, if the intersection of the extended line of the light and the optical axis I is on the lens object side A1, the region is concave.

In addition, referring to FIG. 1, lens 100 can also include an assembly portion 130 that extends radially outward from optical boundary OB. The assembly portion 130 is generally used to assemble the lens 100 to a corresponding component (not shown) of the optical system. The imaging light does not reach the assembly portion 130. The structure and shape of the assembly portion 130 are merely illustrative 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 completely omitted in the drawings.

Referring to FIG. 2, an optical axis region Z1 is defined between the center point CP and the first switching 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 ray 211 intersects the optical axis I on the image side A2 of the lens 200 after passing through the optical axis region Z1, that is, the focal point of the parallel ray 211 passing through the optical axis region Z1 is located at the point R of the image side A2 of the lens 200. Since the light intersects the optical axis I on the image side A2 of the lens 200, the optical axis region Z1 is a convex surface. Conversely, the parallel rays 212 diverge after passing through the circumferential zone Z2. As shown in FIG. 2, the parallel light ray 212 intersects the optical axis I at the object side A1 of the lens 200 through the extension line EL after the circumferential area Z2, that is, the focal point of the parallel ray 212 passing through the circumferential area Z2 is located at the M point of the object side A1 of the lens 200. . Since the extension line EL of the light intersects the optical axis I on 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 switching point TP1 is a boundary between the optical axis region and the circumferential region, that is, the first switching point TP1 is a boundary point of the convex to concave surface.

On the other hand, the shape of the optical axis region can be judged according to the judgment of the person in the field, that is, the optical axis region of the lens is determined by the sign of the radius of curvature of the paraxial axis (abbreviated as R value). Shaped bumps. R values can be commonly used in optical design software such as Zemax or CodeV. The R value is also common in the lens data sheet of the optical design software. In the object side, when the R value is positive, it is determined that the optical axis region of the object side surface is a convex surface; and when the R value is negative, the optical axis region of the side surface of the object is determined to be a concave surface. On the other hand, in the image side, when the R value is positive, it is determined that the optical axis region of the image side surface is a concave surface; and when the R value is negative, it is determined that the optical axis region of the image side surface is a convex surface. The result of the method is consistent with the result of the intersection of the ray/ray extension line and the optical axis. The intersection of the ray/ray extension line and the optical axis is determined by the focus of the ray with a parallel optical axis. The object side or the image side is used to judge the surface unevenness. As used herein, "a region is convex (or concave)", "a region is convex (or concave)" or "a convex (or concave) region" can be used interchangeably.

3 to 5 provide an example of judging the face shape and the area boundary of the lens region in each case, including the aforementioned optical axis region, circumferential region, and relay region.

FIG. 3 is a radial cross-sectional view of the lens 300. Referring to Figure 3, the image side 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 as shown in FIG. The R value of the image side surface 320 is positive (i.e., R > 0), and therefore, the optical axis area Z1 is a concave surface.

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

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. An optical axis region Z1 between the optical axis I and the first switching point TP1 is defined as the object side surface 410. The R value of the object side surface 410 is positive (i.e., R > 0), and therefore, the optical axis area Z1 is a convex surface.

Between the second transition point TP2 and the optical boundary OB of the object side 410 of the lens 400 is defined as a circumferential zone Z2, which is also convex. In addition to this, between the first transition point TP1 and the second transition point TP2 is defined as a relay zone Z3, and the relay zone Z3 of the object side 410 is a concave surface. Referring again to FIG. 4, the object side surface 410 includes the optical axis region Z1 between the optical axis I and the first switching point TP1 radially from the optical axis I, and is located between the first switching point TP1 and the second switching point TP2. The relay region Z3 and the circumferential region 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 region Z1 is a convex surface, the planar shape is changed from the first switching point TP1 to the concave shape, so that the relay region Z3 is a concave surface, and the planar shape is further converted into a convex shape from the second switching point TP2, so the circumferential region 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 transition point, such as the object side surface 510 of the lens 500, 0 to 50% of the distance from the optical axis I to the optical boundary OB of the lens surface is defined as an optical axis region, from the optical axis I to the lens surface optical 50 to 100% of the distance between the boundary OBs is a 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 of the surface of the lens 500 from the optical axis I is defined as the optical axis region Z1 of the object side surface 510. The R value of the object side surface 510 is positive (i.e., R > 0), and therefore, the optical axis area Z1 is a convex surface. 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 region Z2.

Fig. 6 is a schematic view of an optical imaging lens according to a first embodiment of the present invention, and Figs. 7A to 7D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the first embodiment. Referring to FIG. 6 , the optical imaging lens 10 of the first embodiment of the present invention sequentially 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, a sixth lens 6, and a filter 9. When the light emitted by a subject 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 sixth After the lens 6 and the filter 9, an image is formed on an imaging plane 99 (Image Plane). The filter 9 is, for example, an infrared cut-off filter which is disposed between the sixth lens 6 and the image forming surface 99. It is to be noted that the object side A1 is the side facing the object to be photographed, and the image side A2 is the side facing the image forming surface 99.

In the present embodiment, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, and the filter 9 of the optical imaging lens 10 each have an orientation. The object side A1 passes through the object side surfaces 15, 25, 35, 45, 55, 65, 95 and one of the image side faces A2 and the image light rays pass through the image side faces 16, 26, 36, 46, 56, 66, 96. In the present embodiment, the aperture 0 is disposed between the third lens 3 and the fourth lens 4.

The first lens 1 is a first lens having a refractive power from the object side A1 to the image side A2. The first lens 1 has a positive refractive power. The material of the first lens 1 is glass. The optical axis region 151 of the object side surface 15 of the first lens 1 is a convex surface, and its circumferential region 153 is a convex surface. The optical axis region 162 of the image side surface 16 of the first lens 1 is a concave surface, and its circumferential region 164 is a concave surface. In this embodiment, the object side surface 15 and the image side surface 16 of the first lens 1 are both spherical surfaces.

The second lens 2 is a second lens having a refractive power from the object side A1 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 region 252 of the object side surface 25 of the second lens 2 is a concave surface, and its circumferential region 253 is a convex surface. The optical axis region 262 of the image side surface 26 of the second lens 2 is a concave surface, and its circumferential region 264 is a concave surface. In this embodiment, both the object side surface 25 and the image side surface 26 of the second lens 2 are aspheric surfaces.

The third lens 3 is a third lens having a refractive power from the object side A1 to the image side A2. The third lens 3 has a positive refractive power. The material of the third lens 3 is plastic. The optical axis region 351 of the object side surface 35 of the third lens 3 is a convex surface, and its circumferential region 353 is a convex surface. The optical axis region 362 of the image side surface 36 of the third lens 3 is a concave surface, and its circumferential region 364 is a concave surface. In this embodiment, the object side surface 35 and the image side surface 36 of the third lens 3 are all aspherical.

The fourth lens 4 is a third lens having a refractive power from the image side A2 to the object side A1. The fourth lens 4 has a positive refractive power. The material of the fourth lens 4 is plastic. The optical axis region 451 of the object side surface 45 of the fourth lens 4 is a convex surface, and its circumferential region 453 is a convex surface. The optical axis region 461 of the image side surface 46 of the fourth lens 4 is a convex surface, and its circumferential region 463 is a convex surface. In this embodiment, the object side surface 45 and the image side surface 46 of the fourth lens 4 are all aspherical.

The fifth lens 5 is a second lens having a refractive power from the image side A2 to the object side A1. The fifth lens 5 has a positive refractive power. The material of the fifth lens 5 is plastic. The optical axis region 552 of the object side surface 55 of the fifth lens 5 is a concave surface, and its circumferential region 554 is a concave surface. The optical axis region 561 of the image side surface 56 of the fifth lens 5 is a convex surface, and its circumferential region 563 is a convex surface. In the present embodiment, the object side surface 55 and the image side surface 56 of the fifth lens 5 are all aspherical.

The sixth lens 6 is the first lens having the refractive power from the image side A2 to the object side A1. The sixth lens 6 has a positive refractive power. The material of the sixth lens 6 is plastic. The optical axis region 651 of the object side surface 65 of the sixth lens 6 is a convex surface, and its circumferential region 653 is a convex surface. The optical axis region 662 of the image side surface 66 of the sixth lens 6 is a concave surface, and its circumferential region 664 is a concave surface. In the present embodiment, the object side surface 65 and the image side surface 66 of the sixth lens 6 are both aspherical.

Further, in the present embodiment, a gap between the image side surface 46 of the fourth lens 4 and the object side surface 55 of the fifth lens 5 is provided with a bonding material to bond the fourth lens 4 and the fifth lens 5.

The other detailed optical data of the first embodiment is as shown in FIG. 8, and the overall system focal length (EFL) of the optical imaging lens 10 of the first embodiment is 3.564 mm (Millimeter, mm), and the half angle of view is 38.950°. The length of the system is 16.696 mm, the aperture value (F-number, Fno) is 1.850, and the image height is 2.705 mm, wherein the system length refers to the distance from the object side 15 of the first lens 1 to the imaging plane 99 on the optical axis I. .

Further, in the present embodiment, the object side faces 25, 35, 45, 55, 65 and the image side faces 26, 36 of the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6 are provided. The total of ten faces of 46, 56, and 66 are general even asphere surfaces, and these aspheric surfaces are defined by the following formula: (1) Y: the distance between the point on the aspheric curve and the optical axis; Z: the aspheric depth; (the point on the aspheric surface from the optical axis Y, 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: conic coefficient; a _i : the i-th order aspheric coefficient.

The aspherical coefficients of the object side surface 25 of the second lens 2 to the image side surface 66 of the sixth lens 6 in the formula (1) are as shown in FIG. Here, the column number 25 in FIG. 9 indicates that it is the aspherical coefficient of the object side surface 25 of the second lens 2, and the other fields are deduced by analogy.

Further, the relationship between the important parameters in the optical imaging lens 10 of the first embodiment is as shown in Figs. 46 and 48, wherein the unit of each parameter in Fig. 46 is mm. Wherein 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; T4 is the fourth lens 4 Thickness on the optical axis I; T5 is the thickness of the fifth lens 5 on the optical axis I; T6 is the thickness of the sixth lens 6 on the optical axis I; G12 is the image side 16 to the second lens of the first lens 1 The distance of the object side surface 2 of the object 2 on the optical axis I; G23 is the distance from the image side surface 26 of the second lens 2 to the object side surface 35 of the third lens 3 on the optical axis I; G34 is the image side surface 36 of the third lens 3. The distance to the object side surface 45 of the fourth lens 4 on the optical axis I; G45 is the distance from the image side surface 46 of the fourth lens 4 to the object side surface 55 of the fifth lens 5 on the optical axis I; G56 is the fifth lens 5 The distance from the side surface 56 to the object side surface 65 of the sixth lens 6 on the optical axis I; AAG is the distance from the image side surface 16 of the first lens 1 to the object side surface 25 of the second lens 2 on the optical axis I, and the second Image side 26 to third of lens 2 The distance of the object side surface 35 of the mirror 3 on the optical axis I, the distance from the image side surface 36 of the third lens 3 to the object side surface 45 of the fourth lens 4 on the optical axis I, and the image side surface 46 to the fifth of the fourth lens 4 The distance between the object side surface 55 of the lens 5 on the optical axis I and the distance between the image side surface 56 of the fifth lens 5 and the object side surface 65 of the sixth lens 6 on the optical axis I, that is, G12, G23, G34, G45, and The sum of G56; ALT is the sum of the thicknesses of all the lenses having refractive power on the optical axis I in the optical imaging lens 10, that is, the sum of T1, T2, T3, T4, T5, and T6; TL is the object of the first lens 1. The distance from the side surface 15 to the image side surface 66 of the sixth lens 6 on the optical axis I; TTL is the distance from the object side surface 15 of the first lens 1 to the imaging surface 99 on the optical axis I; BFL is the image side of the sixth lens 6 66 to the distance of the imaging plane 99 on the optical axis I; ImgH is the image height of the optical imaging lens 10; and EFL is the system focal length of the optical imaging lens 10. In addition, the definition is: G6F is the air gap of the sixth lens 6 to the filter 9 on the optical axis I; TF is the thickness of the filter 9 on the optical axis I; GFP is the filter 9 to the imaging surface 99 The air gap on the optical axis I; f1 is the focal length of the first lens 1; f2 is the focal length of the second lens 2; f3 is the focal length of the third lens 3; f4 is the focal length of the fourth lens 4; f5 is the fifth lens 5 F6 is the focal length of the sixth lens 6; n1 is the refractive index of the first lens 1; n2 is the refractive index of the second lens 2; n3 is the refractive index of the third lens 3; n4 is the refractive index of the fourth lens 4. N5 is the refractive index of the fifth lens 5; n6 is the refractive index of the sixth lens 6; V1 is the Abbe's coefficient of the first lens 1; V2 is the Abbe's coefficient of the second lens 2; V3 is the third lens 3 Abbe's coefficient; V4 is the Abbe's coefficient of the fourth lens 4; V5 is the Abbe's coefficient of the fifth lens 5 And V6 are the Abbe coefficients of the sixth lens 6.

Referring again to FIG. 7A to FIG. 7D, the diagram of FIG. 7A illustrates the longitudinal spherical aberration of the first embodiment, and the patterns of FIGS. 7B and 7C respectively illustrate the first embodiment when the wavelength is 470 nm. At 555 nm and 650 nm, the Field Curvature aberration in the Sagittal direction and the field curvature aberration in the Tangential direction on the imaging plane 99. The pattern in Fig. 7D illustrates the first implementation. For example, the distortion aberration on the imaging surface 99 at wavelengths of 470 nm, 555 nm, and 650 nm. In the vertical spherical aberration diagram of the first embodiment, in Fig. 7A, the curves formed by each of the wavelengths are very close to each other and are close to the middle, indicating that each of the off-axis rays of different wavelengths is concentrated near the imaging point, by each It can be seen from the skewness of the curve of the wavelength that the imaging point deviation of the off-axis rays of different heights is controlled within the range of ±0.026 mm, so the first embodiment does significantly improve the spherical aberration of the same wavelength, and in addition, the three representative wavelengths The distance between each other is also quite close, and the imaging positions representing the light of different wavelengths have been quite concentrated, so that the chromatic aberration is also significantly improved.

In the two field curvature aberration diagrams of FIG. 7B and FIG. 7C, the focal length variation of the three representative wavelengths in the entire field of view falls within ±0.041 mm, indicating that the optical system of the first embodiment can effectively eliminate the image. difference. The distortion aberration diagram of FIG. 7D shows that the distortion aberration of the first embodiment is maintained within a range of ±6.3%, which indicates that the distortion aberration of the first embodiment has met the imaging quality requirements of the optical system. It is to be noted that the first embodiment can provide good image quality even when the length of the system has been shortened to about 16.696 mm as compared with the prior art optical lens.

10 is a schematic view of an optical imaging lens according to a second embodiment of the present invention, and FIGS. 11A to 11D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the second embodiment. Referring first to FIG. 10, a second embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 4, 5 and 6 are more or less different, and the fourth lens 4 has a negative refractive power. The optical axis region 452 of the object side surface 45 of the fourth lens 4 is a concave surface. It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the second embodiment is as shown in FIG. 12, and the overall system focal length of the optical imaging lens 10 of the second embodiment is 3.871 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 17.684 mm, and the image height is 3.124 mm.

As shown in Fig. 13, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the second embodiment to the image side faces 66 of the sixth lens 6.

In addition, the relationship among the important parameters in the optical imaging lens 10 of the second embodiment is as shown in FIGS. 46 and 48.

The longitudinal spherical aberration of the second embodiment is shown in Fig. 11A, and the imaging point deviation of the off-axis rays of different heights is controlled within the range of ±0.035 mm. In the two field curvature aberration diagrams of Figs. 11B and 11C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.067 mm. On the other hand, the distortion aberration diagram of Fig. 11D shows that the distortion aberration of the second embodiment is maintained within the range of ± 2.5%. Accordingly, the second embodiment can provide good image quality even when the system length has been shortened to about 17.684 mm as compared with the first embodiment.

It can be known from the above description that the distortion of the second embodiment is smaller than that of the first embodiment.

Figure 14 is a schematic view of an optical imaging lens according to a third embodiment of the present invention, and Figures 15A to 15D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the third embodiment. Referring first to Figure 14, a third embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspheric coefficients, and the lenses 1, 2 The parameters of 3, 4, 5 and 6 are more or less different. It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the third embodiment is as shown in Fig. 16, and the overall system focal length of the optical imaging lens 10 of the third embodiment is 2.994 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 14.170 mm, and the image height is 2.462 mm.

As shown in Fig. 17, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the third embodiment to the image side faces 66 of the sixth lens 6.

Further, the relationship between the important parameters in the optical imaging lens 10 of the third embodiment is as shown in Figs. 46 and 48.

The longitudinal spherical aberration of the third embodiment is shown in Fig. 15A, and the imaging point deviation of the off-axis rays of different heights is controlled within the range of ± 0.016 mm. In the two field curvature aberration diagrams of Figs. 15B and 15C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.033 mm. On the other hand, the distortion aberration diagram of Fig. 15D shows that the distortion aberration of the third embodiment is maintained within the range of ±2.2%. Accordingly, the third embodiment can provide good image quality even when the length of the system has been shortened to about 14.170 mm as compared with the first embodiment.

As can be seen from the above description, the longitudinal spherical aberration of the third embodiment is smaller than that of the first embodiment. The field curvature of the third embodiment is smaller than that of the first embodiment. The distortion aberration of the third embodiment is smaller than the distortion aberration of the first embodiment.

18 is a schematic view of an optical imaging lens according to a 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. Referring first to FIG. 18, a fourth embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 4, 5, and 6 are somewhat different, and the optical axis region 661 of the image side 66 of the sixth lens 6 is convex. It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the fourth embodiment is as shown in Fig. 20, and the overall system focal length of the optical imaging lens 10 of the fourth embodiment is 2.975 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 14.161 mm, and the image height is 2.493 mm.

As shown in Fig. 21, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the fourth embodiment to the image side faces 66 of the sixth lens 6.

In addition, the relationship among the important parameters in the optical imaging lens 10 of the fourth embodiment is as shown in FIGS. 46 and 48.

The longitudinal spherical aberration of the fourth embodiment is shown in Fig. 19A, and the imaging point deviation of the off-axis rays of different heights is controlled within the range of ±0.016 mm. In the two field curvature aberration diagrams of Figs. 19B and 19C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.05 mm. On the other hand, the distortion aberration diagram of Fig. 19D shows that the distortion aberration of the fourth embodiment is maintained within the range of ±4.0%. Accordingly, the fourth embodiment can provide good image quality even when the system length has been shortened to about 14.161 mm as compared with the first embodiment.

As can be seen from the above description, the longitudinal spherical aberration of the fourth embodiment is smaller than that of the first embodiment. The distortion aberration of the fourth embodiment is smaller than the distortion aberration of the first embodiment.

Fig. 22 is a schematic diagram of an optical imaging lens according to a fifth embodiment of the present invention, and Figs. 23A to 23D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the fifth embodiment. Referring first to Figure 22, a fifth embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 4, 5 and 6 are more or less different, and the fourth lens 4 has a negative refractive power. The optical axis region 452 of the object side surface 45 of the fourth lens 4 is a concave surface. It is to be noted that, in order to clearly show the drawing, the same reference numerals of the optical axis area and the circumferential area as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the fifth embodiment is as shown in Fig. 24, and the overall system focal length of the optical imaging lens 10 of the fifth embodiment is 4.477 mm, the half angle of view (HFOV) is 30.000 °, and the aperture value (Fno) ) is 1.850, the system length is 20.000 mm, and the image height is 2.340 mm.

As shown in Fig. 25, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the fifth embodiment to the image side faces 66 of the sixth lens 6.

Further, the relationship between the important parameters in the optical imaging lens 10 of the fifth embodiment is as shown in Figs. 46 and 48.

The longitudinal spherical aberration diagram of the fifth embodiment is shown in Fig. 23A, and the imaging point deviation of off-axis rays of different heights is controlled within a range of ±0.012 mm. In the two field curvature aberration diagrams of Figs. 23B and 23C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.05 mm. On the other hand, the distortion aberration diagram of Fig. 23D shows that the distortion aberration of the fifth embodiment is maintained within the range of ±10%. Accordingly, the fifth embodiment can provide good image quality even when the length of the system has been shortened to about 20.000 mm as compared with the first embodiment.

As can be seen from the above description, the longitudinal spherical aberration of the fifth embodiment is smaller than that of the first embodiment.

Fig. 26 is a schematic view showing an optical imaging lens of a sixth embodiment of the present invention, and Figs. 27A to 27D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the sixth embodiment. Referring first to FIG. 26, a sixth embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 4, 5 and 6 are more or less different, and the fourth lens 4 has a negative refractive power. The optical axis region 161 of the image side surface 16 of the first lens 1 is a convex surface. The optical axis region 452 of the object side surface 45 of the fourth lens 4 is a concave surface. It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the sixth embodiment is as shown in Fig. 28, and the overall system focal length of the optical imaging lens 10 of the sixth embodiment is 2.721 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 14.295 mm, and the image height is 1.859 mm.

As shown in Fig. 29, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the sixth embodiment to the image side faces 66 of the sixth lens 6.

Further, the relationship between the important parameters in the optical imaging lens 10 of the sixth embodiment is as shown in Figs. 47 and 49. Here, the unit of each parameter in Fig. 47 is mm.

The longitudinal spherical aberration of the sixth embodiment is shown in Fig. 27A, and the imaging point deviation of the off-axis rays of different heights is controlled within the range of ± 0.016 mm. In the two field curvature aberration diagrams of Figs. 27B and 27C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.05 mm. On the other hand, the distortion aberration diagram of Fig. 27D shows that the distortion aberration of the sixth embodiment is maintained within the range of ±10%. Accordingly, the sixth embodiment can provide good image quality even when the length of the system has been shortened to about 14.295 mm as compared with the first embodiment.

As can be seen from the above description, the longitudinal spherical aberration of the sixth embodiment is smaller than that of the first embodiment.

30 is a schematic view of an optical imaging lens according to a seventh embodiment of the present invention, and FIGS. 31A to 31D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the seventh embodiment. Referring first to FIG. 30, a seventh embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 4, 5 and 6 are more or less different, and the first lens 1 has a negative refractive power. The third lens 3 has a negative refractive power. The fourth lens 4 has a negative refractive power. The optical axis region 452 of the object side surface 45 of the fourth lens 4 is a concave surface. It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the seventh embodiment is as shown in FIG. 32, and the overall system focal length of the optical imaging lens 10 of the seventh embodiment is 4.203 mm, the half angle of view (HFOV) is 30.000°, and the aperture value (Fno) ) is 1.850, the system length is 19.302 mm, and the image height is 2.212 mm.

As shown in Fig. 33, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the seventh embodiment to the image side faces 66 of the sixth lens 6.

Further, the relationship between the important parameters in the optical imaging lens 10 of the seventh embodiment is as shown in Figs. 47 and 49.

The longitudinal spherical aberration of the seventh embodiment is shown in Fig. 31A, and the imaging point deviation of the off-axis rays of different heights is controlled within a range of ± 0.15 mm. In the two field curvature aberration diagrams of Figs. 31B and 31C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ± 0.29 mm. On the other hand, the distortion aberration diagram of Fig. 31D shows that the distortion aberration of the seventh embodiment is maintained within the range of ± 8.0%. Accordingly, the seventh embodiment of the present invention can provide good image quality even when the system length has been shortened to about 19.302 mm as compared with the first embodiment.

As can be seen from the above description, the longitudinal spherical aberration of the seventh embodiment is smaller than that of the first embodiment. The field curvature of the seventh embodiment is smaller than that of the first embodiment.

Figure 34 is a schematic view of an optical imaging lens according to an eighth embodiment of the present invention, and Figures 35A to 35D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the eighth embodiment. Referring first to FIG. 34, an eighth embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the difference between the two is as follows: The optical imaging lens 10 of the eighth embodiment of the present invention is The object side A1 to the image side A2 sequentially include a first lens 1, a second lens 2, a third lens 3, an aperture 0, a seventh lens 7, and a first axis along an optical axis I of the optical imaging lens 10. The fourth lens 4, a fifth lens 5, a sixth lens 6, and a filter 9. When the light emitted by a subject 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 seventh lens 7, the fourth lens 4, and the fifth After the lens 5, the sixth lens 6, and the filter 9, an image is formed on the imaging surface 99.

In the present embodiment, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the seventh lens 7, and the filter 9 of the optical imaging lens 10 Each has an object side A1 that passes the image light, and an image side surface 15, 25, 35, 45, 55, 65, 75, 96 and an image side surface 16, 26, 36 that pass the imaged light toward the image side A2. , 46, 56, 66, 76, 96. In the present embodiment, the aperture 0 is disposed between the third lens 3 and the seventh lens 7.

The fourth lens 4 has a negative refractive power. The optical axis region 452 of the object side surface 45 of the fourth lens 4 is a concave surface, and its circumferential region 454 is a concave surface. The object side surface 45 of the fourth lens 4 is a spherical surface. The image side surface 46 of the fourth lens 4 is aspherical.

The seventh lens 7 is disposed between the third lens 3 and the fourth lens 4. The seventh lens 7 has a positive refractive power. The optical axis region 751 of the object side surface 75 of the seventh lens 7 is a convex surface, and its circumferential region 753 is a convex surface. The optical axis region 761 of the image side surface 76 of the seventh lens 7 is a convex surface, and its circumferential region 763 is a convex surface. The object side surface 75 of the seventh lens 7 is aspherical, and the image side surface 76 of the seventh lens 7 is a spherical surface.

It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the first embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the eighth embodiment is as shown in Fig. 36, and the overall system focal length of the optical imaging lens 10 of the eighth embodiment is 4.114 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 19.516 mm, and the image height is 3.090 mm.

Further, in the eighth embodiment, the object side faces 25, 35, 65, 75 and 26, 36, 66, 76 of the second lens 2, the third lens 3, the sixth lens 6, and the seventh lens 5 are image side faces, and The total of ten faces of the object side surface 45 of the fourth lens 4 and the image side surface 56 of the fifth lens 5 are aspherical surfaces, and these aspherical surfaces are defined by the formula (1), and will not be described herein. The aspherical coefficients of the above surface in the formula (1) are as shown in FIG. Here, the column number 25 in FIG. 37 indicates that it is the aspherical coefficient of the object side surface 25 of the second lens 2, and the other fields are deduced by analogy.

Further, the relationship between the important parameters in the optical imaging lens 10 of the eighth embodiment is as shown in Figs. 47 and 49. The parameter definitions in 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 substantially similar to the paragraph 0034 of the present specification. The parameter definitions mentioned in the paragraph differ in that: T7 is the thickness of the seventh lens 7 on the optical axis I. G37 is the distance from the image side surface 36 of the third lens 3 to the object side surface 75 of the seventh lens 7 on the optical axis I; G74 is the image side surface 76 of the seventh lens 7 to the object side surface 45 of the fourth lens 4 on the optical axis. The distance of I; ALT is the sum of the thicknesses of all the lenses having refractive power on the optical axis I in the optical imaging lens 10, that is, the sum of T1, T2, T3, T4, T5, T6, and T7; f7 is the seventh lens 7 The focal length; n7 is the refractive index of the seventh lens 7; and V7 is the Abbe's coefficient of the seventh lens 7.

Referring to FIG. 35A to FIG. 35D again, the diagram of 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, and the patterns of FIG. 35B and FIG. 35C are respectively The field curvature aberration in the sagittal direction and the field curvature aberration in the meridional direction on the imaging plane 99 at the wavelengths of 650 nm, 555 nm, and 470 nm are illustrated in the first embodiment, and the pattern of FIG. 35D illustrates the eighth. The examples show distortion aberrations on the imaging surface 99 at wavelengths of 650 nm, 555 nm, and 470 nm. In the longitudinal spherical aberration diagram of the eighth embodiment, in Fig. 35A, the curves formed by each of the wavelengths are very close to each other and are close to the middle, indicating that the off-axis rays of different heights of each wavelength are concentrated near the imaging point, by each The deflection amplitude of the curve of the wavelength can be seen that the imaging point deviation of the off-axis rays of different heights is controlled within the range of ±0.035 mm, so the eighth embodiment does significantly improve the spherical aberration of the same wavelength, and, in addition, the three representative wavelengths The distance between each other is also quite close, and the imaging positions representing the light of different wavelengths have been quite concentrated, so that the chromatic aberration is also significantly improved.

In the two field curvature diagrams of FIG. 35B and FIG. 35C, the focal length variation of the three representative wavelengths in the entire field of view falls within ±0.041 mm, indicating that the optical system of the eighth embodiment can effectively eliminate the field curvature image. difference. The distortion pattern of FIG. 35D shows that the distortion aberration of the eighth embodiment is maintained within a range of ±6.8%, indicating that the distortion aberration of the eighth embodiment has met the imaging quality requirements of the optical imaging lens. Compared with the prior optical imaging lens, the eighth embodiment can provide better imaging quality under the condition that the length of the system has been shortened to about 19.516 mm, so the eighth embodiment can maintain good optical performance. Can shorten the length of the optical imaging lens.

38 is a schematic view of an optical imaging lens according to a ninth embodiment of the present invention, and FIGS. 39A to 39D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the ninth embodiment. Referring first to FIG. 38, a ninth embodiment of the optical imaging lens 10 of the present invention is substantially similar to the eighth embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 7, 4, 5, 6 and 7 are more or less different. It is to be noted that, in order to clearly show the drawings, the same reference numerals of the optical axis region and the circumferential region as those of the eighth embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the ninth embodiment is as shown in Fig. 40, and the overall system focal length of the optical imaging lens 10 of the ninth embodiment is 4.237 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 19.976 mm, and the image height is 3.144 mm.

As shown in Fig. 41, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the ninth embodiment to the image side faces 76 of the seventh lens 7.

Further, the relationship between the important parameters in the optical imaging lens 10 of the ninth embodiment is as shown in Figs. 47 and 49.

The longitudinal spherical aberration diagram of the ninth embodiment is shown in Fig. 39A, and the imaging point deviation of off-axis rays of different heights is controlled within a range of ± 0.03 mm. In the two field curvature aberration diagrams of Figs. 39B and 39C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.045 mm. On the other hand, the distortion aberration diagram of Fig. 39D shows that the distortion aberration of the ninth embodiment is maintained within the range of ±8%. Accordingly, the ninth embodiment can provide good image quality even when the system length has been shortened to about 19.976 mm as compared with the eighth embodiment.

As can be seen from the above description, the longitudinal spherical aberration of the ninth embodiment is smaller than that of the eighth embodiment.

42 is a schematic view of an optical imaging lens according to a tenth embodiment of the present invention, and FIGS. 43A to 43D are longitudinal spherical aberration and various aberration diagrams of the optical imaging lens of the tenth embodiment. Referring first to FIG. 42, a tenth embodiment of the optical imaging lens 10 of the present invention is substantially similar to the first embodiment, and the differences between the two are as follows: optical data, aspherical coefficients, and the lenses 1, 2 The parameters between 3, 7, 4, 5, 6 and 7 are more or less different, and the fourth lens 4 has a positive refractive power. The fifth lens 5 has a negative refractive power. It is to be noted that, in order to clearly show the drawing, the same reference numerals of the optical axis area and the circumferential area as those of the eighth embodiment are omitted in FIG.

The detailed optical data of the optical imaging lens 10 of the tenth embodiment is as shown in Fig. 44, and the overall system focal length of the optical imaging lens 10 of the tenth embodiment is 4.019 mm, and the half angle of view (HFOV) is 38.950 °, and the aperture value (Fno) ) is 1.850, the system length is 19.116 mm, and the image height is 3.172 mm.

As shown in Fig. 45, the aspherical coefficients in the formula (1) are the object side faces 25 of the second lens 2 of the tenth embodiment to the image side faces 76 of the seventh lens 7.

Further, the relationship between the important parameters in the optical imaging lens 10 of the tenth embodiment is as shown in Figs. 47 and 49.

In the tenth embodiment, the longitudinal spherical aberration diagram of the pupil radius of 1.3023 mm is shown in Fig. 43A, and the imaging point deviation of the off-axis rays of different heights is controlled within the range of ± 0.024 mm. In the two field curvature aberration diagrams of Figs. 43B and 43C, the amount of change in the focal length of the three representative wavelengths over the entire field of view falls within ±0.048 mm. On the other hand, the distortion aberration diagram of Fig. 43D shows that the distortion aberration of the tenth embodiment is maintained within the range of ±2.6%. Accordingly, the tenth embodiment of the present invention can provide good image quality under the condition that the length of the system has been shortened to about 19.116 mm as compared with the eighth embodiment.

As can be seen from the above description, the system length of the tenth embodiment is smaller than the system length of the eighth embodiment. The longitudinal spherical aberration of the tenth embodiment is smaller than the longitudinal spherical aberration of the eighth embodiment. The distortion aberration of the tenth embodiment is smaller than the distortion aberration of the eighth embodiment.

Referring to FIG. 46 to FIG. 49 together, FIG. 46 to FIG. 49 are table diagrams of optical parameters of the first to tenth embodiments.

The purpose of at least one of the following is to maintain the system focal length and the optical parameters at an appropriate value, to avoid any parameter being too large to facilitate the correction of the aberration of the optical imaging lens 10 as a whole, or to avoid any Too small a parameter affects assembly or increases manufacturing difficulty. The optical imaging lens 10 can meet the conditional formula of TTL/EFL ≦ 5.300, preferably conforms to the conditional formula of 2.500 ≦ TTL/EFL ≦ 5.300; the optical imaging lens 10 can conform to the conditional formula of TL/EFL ≦ 3.700, preferably The ground can meet the conditional formula of 2.000 ≦ TL / EFL ≦ 3.700.

For the following conditional expressions, at least one of the objectives is to maintain an appropriate value for the thickness and interval of each lens, to avoid any parameter being too large to facilitate the thinning of the optical imaging lens 10 as a whole, or to avoid any parameter being too small to be affected. Assembly or increase the difficulty of manufacturing. The optical imaging lens 10 can conform to the conditional formula of ALT/(T1+T6) ≦ 2.100, preferably conforms to the conditional formula of 1.100 ≦ ALT / (T1 + T6) ≦ 2.100; the optical imaging lens 10 can conform to ALT / ( The conditional expression of T4+T6)≦3.000 is preferably in accordance with the conditional formula of 1.100≦ALT/(T4+T6)≦3.000; the optical imaging lens 10 can conform to the conditional formula of AAG/(T5+G34)≦3.500, Jiadi can meet the conditional formula of 1.000≦AAG/(T5+G34)≦3.500; the optical imaging lens 10 can meet the conditional formula of (AAG+BFL)/(T4+G12)≦8.000, preferably conforming to 1.400≦( Conditional formula of AAG+BFL)/(T4+G12)≦8.000; Optical imaging lens 10 can conform to the conditional formula of TL/(T1+G45+T6)≦4.500, preferably conforming to 1.400≦TL/(T1+G45 +T6) Conditional formula of ≦4.500; The optical imaging lens 10 can conform to the conditional formula of TL/(T5+G56+T6)≦7.000, preferably compliant with 2.000≦TL/(T5+G56+T6)≦7.000 The optical imaging lens 10 can conform to the conditional formula of (T1+T4+T5+G45)/T6≦2.000, preferably conforming to 1.000≦(T1+T4+T5+G45)/T6≦2.000 Conditional formula; The optical imaging lens 10 can conform to the conditional formula of (T1+T4+T5+G56)/T6≦2.000, preferably conforming to the conditional formula of 1.000≦(T1+T4+T5+G56)/T6≦2.000 The optical imaging lens 10 can conform to the conditional formula of (T2+G12+G23+G34)/(T4+G45)≦ 5.000, preferably in accordance with 0.800≦(T2+G12+G23+G34)/(T4+G45) Conditional formula of ≦5.000; The optical imaging lens 10 can conform to the conditional formula of (T3+G12+G23+G34)/(T4+G56)≦ 5.400, preferably in accordance with 0.800≦(T3+G12+G23+G34)/ (T4+G56) 条件 5.400 conditional formula; The optical imaging lens 10 can conform to the conditional formula of (T2+G12+G23+G34)/T4≦ 5.000, preferably conforming to 0.900≦(T2+G12+G23+G34) Conditional formula of /T4≦ 5.000; The optical imaging lens 10 can conform to the conditional formula of (T2+T3+G12+G34)/(T4+T5)≦3.400, preferably 0.600≦ (T2+T3+G12+G34 ) / (T4 + T5) ≦ 3.400 conditional formula; The optical imaging lens 10 can conform to the conditional formula of (T2+T3 + G23 + G34) / (T4 + T5) ≦ 3.300, preferably in accordance with 0.700 ≦ (T2+ Conditional formula of T3+G23+G34)/(T4+T5)≦3.300; The optical imaging lens 10 can conform to the conditional formula of (T2+T3+BFL)/(T6+G34)≦1.500, preferably conforming to the conditional expression of 0.600≦(T2+T3+BFL)/(T6+G34)≦1.500. The optical imaging lens 10 can conform to the conditional formula of (T2+T3+BFL)/T1≦3.600, and preferably conforms to the conditional formula of 1.200 ≦(T2+T3+BFL)/T1≦3.600.

In addition, any combination of the parameters of the embodiment can be selected to increase the lens limit 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, the above conditional condition can better shorten the system length, improve the imaging quality, or improve the assembly yield of the optical imaging lens 10 of the embodiment of the present invention. And improve the shortcomings of the prior art.

The exemplary defined relationship listed above may also be selectively combined with the unequal amount applied to the embodiment of the present invention, and is not limited thereto. In the implementation of the present invention, in addition to the foregoing relationship, a fine structure such as a concave-convex surface arrangement of a plurality of other lenses may be additionally designed for a single lens or a plurality of lenses to enhance system performance and/or The control of the resolution, for example, the circumferential area of the object side surface 35 of the third lens 3 can be selectively formed as a concave surface. It should be noted that such details need to be selectively combined and applied to other embodiments of the invention without conflict.

In summary, the optical imaging lens 10 of the embodiment of the present invention can achieve the following effects and advantages:

1. The longitudinal spherical aberration, astigmatic aberration, and distortion of the embodiments of the present invention all conform to the usage specifications. In addition, the three off-axis rays of different wavelengths of red, green and blue are concentrated near the imaging point. The deviation of the amplitude of each curve shows that the deviation of the imaging points of the off-axis rays of different heights is controlled. Good spherical aberration, aberration, and distortion suppression. Referring further to the imaging quality data, the distances of the three representative wavelengths of red, green, and blue are also relatively close to each other, indicating that the embodiment of the present invention has excellent concentration-suppressing ability for different wavelengths of light in various states. In summary, the embodiments of the present invention can produce excellent image quality by designing and matching the lenses.

2. The second lens 2 has a negative refractive power to increase the half angle of view, and the optical axis region 562 of the image side surface 56 of the third lens 3 is concave to facilitate correcting the aberration generated by the second lens 2.

3. Gluing the two lenses of the fourth lens 4 and the fifth lens 5 is advantageous for improving the image quality, and wherein the optical axis region 461 of the image side surface 46 of the fourth lens 4 is designed to be convex and matched with the fifth lens 5. It is preferable that the optical axis region 561 of the side surface 56 has a convex lens surface configuration effect.

4. The object side surface 45 and the image side surface 46 of the fourth lens 4 and the object side surface 55 and the image side surface 56 of the fifth lens 5 are aspherical mating, which is advantageous for correcting various aberrations.

5. The ratio of the distance from the image side surface 16 of the first lens 1 to the object side surface 45 of the fourth lens 4 on the optical axis I and the thickness of the first lens 1 on the optical axis I is less than or equal to 3.000, which is favorable for this condition. Increasing the thickness of the first lens 1 so that the thickness of the first lens 1 is not too thin can reduce the difficulty of the process. Moreover, the length of the lens can be made not too long, and the matching of the surface shape is advantageous for reducing the distortion, and the preferred range is 1.000 ≦ (G12+T2+G23+T3+G34)/T1≦3.000.

6. The optical imaging lens 10 of the embodiment of the present invention is advantageous for correcting the chromatic aberration of the optical imaging lens 10 when V2 > V3 + V5 or V4 > V3 + V5 is satisfied.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 200, 300, 400, 500‧ ‧ lenses

15, 25, 35, 45, 55, 65, 75, 95, 110, 410, 510 ‧ ‧ side

16, 26, 36, 46, 56, 66, 76, 96, 120, 320‧‧‧

130‧‧‧Assembly Department

211, 212‧‧‧ parallel rays

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

151, 161, 162, 252, 262, 351, 362, 451, 452, 461, 552, 561, 651, 661, 662, 751, 761 ‧ ‧ optical axis area

153, 164, 253, 264, 353, 364, 453, 454, 463, 554, 563, 653, 664, 753, 763 ‧ ‧ circumferential area

A1‧‧‧ object side

A2‧‧‧ image side

CP1‧‧‧ first central point

CP2‧‧‧ second central point

EL‧‧‧ extension line

I‧‧‧ optical axis

Lm‧‧‧ edge light

Lc‧‧‧ edge light

OB‧‧‧ optical boundary

R‧‧‧ points

TP1‧‧‧ first conversion point

TP2‧‧‧ second transition point

Z1‧‧‧ optical axis area

Z2‧‧‧circular area

Z3‧‧‧ Relay area

Figure 1 is a schematic view showing the surface structure of a lens. Fig. 2 is a schematic view showing the surface relief structure of a lens and the ray focus. Fig. 3 is a schematic view showing the surface structure of a lens of an example one. Fig. 4 is a schematic view showing the surface structure of a lens of an example two. Fig. 5 is a schematic view showing the surface structure of a lens of an example three. Fig. 6 is a schematic view of an optical imaging lens according to a first embodiment of the present invention. 7A to 7D are longitudinal spherical aberration and various aberration diagrams 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 aspherical parameters of the optical imaging lens of the first embodiment of the present invention. Figure 10 is a schematic view of an optical imaging lens of a second embodiment of the present invention. 11A to 11D are longitudinal spherical aberration and various aberration diagrams 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. Figure 13 shows aspherical parameters of the optical imaging lens of the second embodiment of the present invention. Figure 14 is a schematic view of an optical imaging lens of a third embodiment of the present invention. 15A to 15D are longitudinal spherical aberration and various aberration diagrams 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 aspherical parameters of the optical imaging lens of the third embodiment of the present invention. Figure 18 is a schematic view of an optical imaging lens of a fourth embodiment of the present invention. 19A to 19D are longitudinal spherical aberration and various aberration diagrams 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. Figure 21 shows aspherical parameters of the optical imaging lens of the fourth embodiment of the present invention. Figure 22 is a schematic view of an optical imaging lens of a fifth embodiment of the present invention. 23A to 23D are longitudinal spherical aberration and various aberration diagrams 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 aspherical parameters of the optical imaging lens of the fifth embodiment of the present invention. Figure 26 is a schematic view of an optical imaging lens of a sixth embodiment of the present invention. 27A to 27D are longitudinal spherical aberration and various aberration diagrams 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 aspherical parameters of the optical imaging lens of the sixth embodiment of the present invention. Figure 30 is a schematic view of an optical imaging lens of a seventh embodiment of the present invention. 31A to 31D are longitudinal spherical aberration and various aberration diagrams 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. Figure 33 shows aspherical parameters of the optical imaging lens of the seventh embodiment of the present invention. Figure 34 is a schematic view of an optical imaging lens of an eighth embodiment of the present invention. 35A to 35D are longitudinal spherical aberration and various aberration diagrams 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 aspherical parameters of the optical imaging lens of the eighth embodiment of the present invention. Figure 38 is a schematic view of an optical imaging lens of a ninth embodiment of the present invention. 39A to 39D are longitudinal spherical aberration and various aberration diagrams 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. Figure 41 shows aspherical parameters of the optical imaging lens of the ninth embodiment of the present invention. Figure 42 is a schematic view of an optical imaging lens of a tenth embodiment of the present invention. 43A to 43D are longitudinal spherical aberration and various aberration diagrams 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 aspherical parameters of the optical imaging lens of the tenth embodiment of the present invention. Fig. 46 and Fig. 48 show numerical values of important parameters of the optical imaging lens of the first to fifth embodiments of the present invention and their relational expressions. 47 and 49 show numerical values of important parameters of the optical imaging lens of the sixth to tenth embodiments of the present invention and their relational expressions.

Claims (20)

An optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side, and the first The lens to the sixth lens each include an object side facing the object side and passing the imaging light and an image side facing the image side and passing the imaging light, wherein the first lens is from the object side to the image Calculating a first lens having a refractive power; the second lens is a second lens having a refractive power from the object side to the image side, and the second lens has a negative refractive power; The third lens is a third lens having a refractive power from the object side to the image side, and an optical axis region of the image side of the third lens is a concave surface; the fourth lens is from the image side Calculating a third lens having a refractive power to the object side; the fifth lens is a second lens having a refractive power from the image side to the object side; the sixth lens is from the image side Calculating a first lens having a refractive power to the object side, wherein the fourth lens and the fifth lens There is no air gap between the mirrors, and a ratio of a distance from the image side of the first lens to the object side of the fourth lens on the optical axis and a thickness of the first lens on the optical axis is less than Or equal to 3.000. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: V2>V3+V5, wherein V2 is an Abbe coefficient of the second lens, and V3 is the first An Abbe coefficient of the three lens, and V5 is an Abbe coefficient of the fifth lens. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: V4>V3+V5, wherein V4 is an Abbe coefficient of the fourth lens, and V3 is the first An Abbe coefficient of the three lens, and V5 is an Abbe coefficient of the fifth lens. The optical imaging lens of claim 1, wherein the optical imaging lens further conforms to the following conditional formula: TTL/EFL ≦ 5.300, wherein TTL is the object side of the first lens to an imaging surface A distance on the optical axis, and the EFL is a system focal length of the optical imaging lens. The optical imaging lens of claim 1, wherein the optical imaging lens further conforms to the following conditional formula: TL/EFL ≦ 3.700, wherein TL is the object side of the first lens to the sixth lens The image side is at a distance on the optical axis, and the EFL is a system focal length of the optical imaging lens. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: ALT/(T1+T6) ≦ 2.100, wherein ALT is all diopter in the optical imaging lens A sum of thicknesses of the lens on the optical axis, T1 is a thickness of the first lens on the optical axis, and T6 is a thickness of the sixth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: ALT/(T4+T6)≦3.000, wherein ALT is all refractive power in the optical imaging lens The sum of a thickness of the lens on the optical axis, T4 is a thickness of the fourth lens on the optical axis, and T6 is a thickness of the sixth lens on the optical axis. The optical imaging lens of claim 1, wherein the optical imaging lens further conforms to the following conditional formula: AAG/(T5+G34)≦3.500, wherein AAG is the image side of the first lens to the a distance of the object side of the second lens on the optical axis, a distance from the image side of the second lens to the object side of the third lens on the optical axis, the image side of the third lens a distance from the side of the object to the fourth lens on the optical axis, a distance from the image side of the fourth lens to a side of the object of the fifth lens on the optical axis, and the fifth lens a sum of a distance from the side to the sixth lens on the optical axis, T5 is a thickness of the fifth lens on the optical axis, and G34 is the image side of the third lens to a distance of the object side of the fourth lens on the optical axis. The optical imaging lens of claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (AAG+BFL)/(T4+G12)≦8.000, wherein the AAG is the first lens a distance from the side of the object to the second lens on the optical axis, a distance from the image side of the second lens to a side of the third lens on the optical axis, the third lens a distance from the image side to the object side of the fourth lens on the optical axis, a distance from the image side of the fourth lens to a side of the object of the fifth lens on the optical axis, and the first a sum of a distance from the image side of the five lens to the object side of the sixth lens on the optical axis, and the BFL is a distance from the image side of the sixth lens to an imaging surface on the optical axis, T4 is a thickness of the fourth lens on the optical axis, and G12 is a distance from the image side of the first lens to the object side of the second lens on the optical axis. The optical imaging lens of claim 1, wherein the optical imaging lens further conforms to the following conditional formula: TL / (T1 + G45 + T6) ≦ 4.500, wherein TL is the side of the object of the first lens a distance from the image side of the sixth lens on the optical axis, T1 is a thickness of the first lens on the optical axis, and G45 is the image side of the fourth lens to the fifth lens a distance of the side of the object on the optical axis, and T6 is a thickness of the sixth lens on the optical axis. The optical imaging lens of claim 1, wherein the optical imaging lens further conforms to the following conditional formula: TL / (T5 + G56 + T6) ≦ 7.000, wherein TL is the side of the first lens a distance from the image side of the sixth lens to the optical axis, T5 is a thickness of the fifth lens on the optical axis, and G56 is the image side of the fifth lens to the sixth lens a distance of the side of the object on the optical axis, and T6 is a thickness of the sixth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T1+T4+T5+G45)/T6≦2.000, wherein T1 is the first lens a thickness on the optical axis, T4 is a thickness of the fourth lens on the optical axis, T5 is a thickness of the fifth lens on the optical axis, and G45 is the image side of the fourth lens to the first A distance of the side of the object of the five lens on the optical axis, and T6 is a thickness of the sixth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T1+T4+T5+G56)/T6≦2.000, wherein T1 is the first lens a thickness on the optical axis, T4 is a thickness of the fourth lens on the optical axis, T5 is a thickness of the fifth lens on the optical axis, and G56 is the image side of the fifth lens to the first A distance of the side of the six lens on the optical axis, and T6 is a thickness of the sixth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T2+G12+G23+G34)/(T4+G45) ≦5.000, wherein T2 is the first a thickness of the second lens on the optical axis, G12 is a distance from the image side of the first lens to the object side of the second lens on the optical axis, and G23 is the image side of the second lens to a distance of the object side of the third lens on the optical axis, G34 is a distance from the image side of the third lens to the object side of the fourth lens on the optical axis, and T4 is the fourth a thickness of the lens on the optical axis, and G45 is a distance from the image side of the fourth lens to the object side of the fifth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T3+G12+G23+G34)/(T4+G56) ≦5.400, wherein T3 is the first a thickness of the three lens on the optical axis, G12 is a distance from the image side of the first lens to the object side of the second lens on the optical axis, and G23 is the image side of the second lens to a distance of the object side of the third lens on the optical axis, G34 is a distance from the image side of the third lens to the object side of the fourth lens on the optical axis, and T4 is the fourth a thickness of the lens on the optical axis, and G56 is a distance from the image side of the fifth lens to the object side of the sixth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T2+G12+G23+G34)/T4≦5.000, wherein T2 is the second lens a thickness on the optical axis, G12 is a distance from the image side of the first lens to the object side of the second lens on the optical axis, and G23 is the image side of the second lens to the third lens a distance of the side of the object on the optical axis, G34 is a distance from the image side of the third lens to the side of the object of the fourth lens on the optical axis, and T4 is the fourth lens A thickness on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T2+T3+G12+G34)/(T4+T5)≦3.400, wherein T2 is the first a thickness of the second lens on the optical axis, T3 is a thickness of the third lens on the optical axis, and G12 is the image side of the first lens to the object side of the second lens on the optical axis a distance G34 is a distance from the image side of the third lens to the object side of the fourth lens on the optical axis, and T4 is a thickness of the fourth lens on the optical axis, and T5 is a thickness of the fifth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T2+T3+G23+G34)/(T4+T5)≦3.300, wherein T2 is the first a thickness of the second lens on the optical axis, T3 is a thickness of the third lens on the optical axis, and G23 is the image side of the second lens to the object side of the third lens on the optical axis a distance G34 is a distance from the image side of the third lens to the object side of the fourth lens on the optical axis, and T4 is a thickness of the fourth lens on the optical axis, and T5 is a thickness of the fifth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T2+T3+BFL)/(T6+G34)≦1.500, wherein T2 is the second lens a thickness on the optical axis, T3 is a thickness of the third lens on the optical axis, and BFL is a distance from the image side of the sixth lens to an imaging surface on the optical axis, and T6 is a thickness of the sixth lens on the optical axis, and G34 is a distance from the image side of the third lens to the object side of the fourth lens on the optical axis. The optical imaging lens according to claim 1, wherein the optical imaging lens further conforms to the following conditional formula: (T2+T3+BFL)/T1≦3.600, wherein T2 is the second lens on the optical axis a thickness of the upper surface, T3 is a thickness of the third lens on the optical axis, and BFL is a distance from the image side of the sixth lens to an imaging surface on the optical axis, and T1 is the first lens a thickness on the optical axis.