CN204556941U - optical lens - Google Patents

Abstract

The utility model provides an optical lens, which includes, from the object side to the image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power and a sixth lens with negative refractive power, and satisfies 0.65≤F123/EFL and F123/EFL≤1.00. EFL is the effective focal length of the optical lens; F123 is the overall focal length of the first lens, the second lens and the third lens.

Description

optical lens

technical field

The utility model relates to an optical lens, in particular to an optical lens with small volume and good imaging quality.

Background technique

Camera devices, such as handheld communication systems, digital cameras, digital video cameras or action cameras, mainly combine lens modules and image sensors to focus light beams and convert them into electronic signals of images for subsequent storage, processing and transmission.

The optical lens of the camera device is usually composed of multiple lenses. In order to increase the competitive advantage in the market, miniaturization, high image quality and cost reduction have always been the goals of product development.

Therefore, there is an urgent need to propose a new optical lens, which can simultaneously realize the miniaturization of the optical lens and improve the imaging quality under the premise of reducing the manufacturing cost.

Utility model content

The purpose of the utility model is to provide an optical lens. On the premise of reducing the manufacturing cost, the miniaturization of the optical lens and the improvement of the imaging quality are realized at the same time.

In order to achieve the above object, the utility model provides an optical lens, wherein, from the object side to the image side, it includes: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens And a sixth lens, the first lens, the third lens and the fifth lens have the same light refraction effect, the second lens, the fourth lens and the sixth lens have the same light refraction effect, and satisfy 0.65≤F123/EFL and F123/EFL≤1.00, wherein EFL is the effective focal length of the optical lens, and F123 is the overall focal length of the first lens, the second lens and the third lens.

In order to achieve the above purpose, the utility model also provides an optical lens, wherein, from the object side to the image side, it includes: a first lens with positive diopter, a second lens with positive diopter, a first lens with positive diopter Three lenses, a fourth lens with diopter, a fifth lens with positive diopter and a sixth lens with negative diopter, and satisfy 0.65≤F123/EFL and F123/EFL≤1.00, where EFL is the optical lens The effective focal length, F123 is the overall focal length of the first lens, the second lens and the third lens.

The above optical lens, wherein the first lens is a glass lens.

In order to achieve the above purpose, the utility model also provides an optical lens, wherein, from the object side to the image side, it includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens lens and a sixth lens, the first lens, the third lens and the fifth lens have the same light refraction effect, the second lens, the fourth lens and the sixth lens have the same light refraction effect, and Satisfy 0.65≤F123/EFL and F123/EFL≤1.00, characterized in that EFL is the effective focal length of the optical lens, F123 is the overall focal length of the first lens, the second lens and the third lens, and the first The lens is a glass lens.

In the above optical lens, at least one of the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is a plastic lens.

In the above optical lens, at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an aspheric lens.

Above-mentioned optical lens, wherein, an image side surface of this sixth lens is an aspheric surface, and this image side surface comprises an inflection point, and the distance from this inflection point to the optical axis is h6, and the radius of this sixth lens is H6, and h6/H6<1.0.

The above-mentioned optical lens, which further includes that the optical lens satisfies at least one condition of 0.50≤EFL/TTL, EFL/TTL≤1.00, 1.30≤Fno, Fno≤2.80 and TTL≤20.0mm, wherein Fno is the optical lens OL1 An aperture coefficient, TTL is the distance from an object-side surface of the first lens to an imaging plane.

The above optical lens, wherein the first lens has a refractive index nd1 and Abbe number vd1, the fourth lens has a refractive index nd4, and 1.40≤nd1, 35≤vd1 or vd4≤40.

In the above optical lens, the fifth lens has an Abbe number vd5, the sixth lens has an Abbe number vd6, and │vd5-vd6│≤10.

In the above-mentioned optical lens, wherein, the first lens has an image-side surface with positive or negative refractive power, and/or the second lens has an object-side surface with positive or negative refractive power.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 illustrates the optical lens of the first embodiment of the present utility model;

Fig. 2 illustrates the optical lens of the second embodiment of the present utility model;

Fig. 3 A depicts the field curvature (field curvature) curve diagram of the optical lens of the first embodiment of the present utility model;

FIG. 3B shows a curve diagram of distortion (distortion) of the optical lens of the first embodiment of the present invention;

Fig. 4 depicts the light fan diagram analysis (Ray Fan) simulation figure of the optical lens of the first embodiment of the present utility model;

FIG. 5A shows the field curvature curve of the optical lens of the second embodiment of the present invention;

FIG. 5B shows the distortion curve of the optical lens of the second embodiment of the present invention;

Fig. 6 shows the light fan diagram analysis simulation diagram of the optical lens of the second embodiment of the present utility model;

Fig. 7 illustrates the optical lens of the third embodiment of the present utility model;

FIG. 8A shows the field curvature curve of the optical lens of the third embodiment of the present invention;

FIG. 8B shows the distortion curve of the optical lens of the third embodiment of the present invention;

Fig. 9 shows the simulation diagram of the light fan diagram analysis of the optical lens of the third embodiment of the present invention;

Fig. 10 illustrates the optical lens of the fourth embodiment of the present utility model;

Fig. 11 illustrates the optical lens of the fifth embodiment of the present utility model;

FIG. 12 shows the optical lens of the sixth embodiment of the present invention.

Detailed ways

Various embodiments of the present invention will be described in detail below, and the accompanying drawings are used as examples. In addition to these detailed descriptions, the utility model can also be widely implemented in other embodiments, and any easy replacement, modification, and equivalent changes of any of the described embodiments are included in the scope of the present application, and the following claims prevail. In the description of the specification, many specific details are provided in order to enable readers to have a more complete understanding of the utility model; however, the utility model may still be implemented under the premise of omitting some or all of these specific details. Also, well-known steps or elements have not been described in detail in order to avoid unnecessarily limiting the invention. The same or similar elements will be denoted by the same or similar symbols in the drawings. It should be noted that the drawings are for illustrative purposes only, and do not represent the actual size or quantity of components, unless otherwise specified.

FIG. 1 shows the optical lens OL1 of the first embodiment of the present invention. In order to show the features of this embodiment, only structures related to this embodiment are shown, and other structures are omitted. The optical lens OL1 of this embodiment can be applied to a device having image projection or capture functions. The device may be a handheld communication system, a vehicle camera lens, a monitoring system, a digital camera, a digital video camera or a projector, but it is not intended to limit the present invention.

As shown in Figure 1, in the present embodiment, the optical lens OL1 includes at least one first lens L1, one second lens L2, and one third lens L3 from the object side (object side) to the image side (image-forming side). , a fourth lens L4, a fifth lens L5 and a sixth lens L6. Wherein, the first lens L1 , the second lens L2 , the third lens L3 , the fourth lens L4 , the fifth lens L5 and the sixth lens L6 may be arranged along an optical axis OA.

In another embodiment, the optical lens OL1 mainly includes a first lens group G1 and a second lens group G2. Further, the first lens group G1 includes at least one of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6, and the remaining lenses may belong to the first lens L1. Two lens groups G2. Wherein, the first lens group G1 may have a positive diopter, and the second lens group G2 may have a negative diopter.

For example, the first lens group G1 can include the first lens L1, the second lens L2 and the third lens L3 in sequence from the object side to the image side; the second lens group G2 can include the first lens L1 in sequence from the object side to the image side. Four lenses L4, fifth lens L5 and sixth lens L6. But do not limit the utility model with this.

In one embodiment, the diopters of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 are interspersed in a positive and negative way; in another embodiment The first lens L1 , the third lens L3 and the fifth lens L5 may have the same refractive effect, and the second lens L2 , the fourth lens L4 and the sixth lens L6 may have the same refractive effect. Wherein, the same light bending effect means that the diopters of multiple lenses are both positive or negative. That is, multiple lenses with positive refractive effects at the same time can diverge the transmitted beam; or, multiple lenses with negative refractive effects can converge the transmitted beam, and the beam diverges or converges The degree varies with each lens.

For example, in one embodiment, the first lens L1 has a positive diopter, the second lens L2 has a negative diopter, the third lens L3 has a positive diopter, the fourth lens L4 has a negative diopter, and the fifth lens L5 has a positive diopter, and sixth lens L6 has negative diopter.

In one embodiment, the optical lens OL1 may satisfy the conditions of 0.50≦EFL/TTL and/or EFL/TTL≦1.00. Wherein, EFL is the effective focal length of the optical lens OL1 , and TTL is the distance from the object-side surface S1 of the first lens L1 to an imaging plane I. Specifically, TTL is the distance from the vertex where the object-side surface S1 of the first lens L1 intersects with an optical axis OA of the optical lens OL1 to an imaging plane I. Further, the optical lens OL1 can also satisfy 0.60≤EFL/TTL or 0.65≤EFL/TTL, and/or EFL/TTL≤0.93, EFL/TTL≤0.85 or EFL/TTL≤0.80.

In an embodiment, the optical lens OL1 may also satisfy the conditions of 0.65≦F123/EFL and/or F123/EFL≦1.00. Wherein, F123 is the focal length of the first lens group G1 , which means that F123 is substantially equivalent to the overall focal length of the first lens L1 , the second lens L2 and the third lens L3 . Further, the optical lens OL1 may also satisfy the conditions of 0.70≦F123/EFL, and/or F123/EFL≦0.95 or F123/EFL≦0.90.

In an embodiment, the optical lens OL1 may also satisfy the conditions of 1.30≦Fno and/or Fno≦2.80. Wherein, Fno is the aperture coefficient of the optical lens OL1. Further, the optical lens OL1 may also satisfy the conditions of 1.50≦Fno or 1.80≦Fno, and/or Fno≦2.50.

In one embodiment, the optical lens OL1 may also satisfy the condition of TTL≦20.0 mm (millimeter, mm). Further, the optical lens OL1 may also satisfy the conditions of 5.0mm≤TTL or 6.5mm≤TTL, and/or TTL≤18.0mm, TTL≤10.0mm or TTL≤8.0mm.

In an embodiment, the optical lens OL1 may also satisfy the condition of 1.40≦nd1. Wherein, nd1 is the refractive index of the first lens L1. Further, the optical lens OL1 may also satisfy the conditions of 1.50≦nd1 or 1.60≦nd1, and/or nd1≦2.00, nd1≦1.90 or nd1≦1.80.

In an embodiment, the optical lens OL1 may also satisfy the condition of 35≦vd1. Wherein, vd1 is the Abbe number of the first lens L1. Further, the optical lens OL1 may also satisfy the conditions of vd1≤70 or vd1≤50, and/or 40≤vd1.

In an embodiment, the optical lens OL1 may also satisfy the condition of νd4≦40. Wherein, vd4 is the Abbe number of the fourth lens L4. Further, the optical lens OL1 may satisfy the condition of 10≤vd4 or 15≤vd4, and/or vd4≤35.

In an embodiment, the optical lens OL1 can also satisfy the condition of │vd5-vd6│≦10.0. Among them, vd5 is the Abbe number of the fifth lens L5, and vd6 is the Abbe number of the sixth lens L6. Further, the optical lens OL1 can satisfy the condition of 3.0≦│vd5-vd6│.

In one embodiment, at least one of the first lens L1 , the second lens L2 , the third lens L3 , the fourth lens L4 , the fifth lens L5 and the sixth lens L6 may be an aspherical lens or a free-form surface lens.

Specifically, each free-form lens has at least one free-form surface, meaning that the object-side surface and/or image-side surface of the free-form lens is a free-form surface; and each aspheric lens has at least one aspheric surface, meaning That is, the object-side surface and/or the image-side surface of the aspheric lens is an aspheric surface. And each aspheric surface can satisfy the following mathematical formula:

$\mathrm{<span\; class="notranslate">\; Z</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; [</span>\frac{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; *</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>\sqrt{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>{\mathrm{<span\; class="notranslate">\; C</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; Y</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}}<span\; class="notranslate">\; ]</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; A</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; *</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}^{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; )</span>$

Among them, Z is the coordinate in the direction of the optical axis OA, with the light transmission direction as the positive direction, A4, A6, A8, A10, A12, A14 and A16 are the aspheric coefficients, K is the quadric surface constant, C=1/R, R is the radius of curvature, Y is the coordinate value perpendicular to the direction of the optical axis OA, and the direction away from the optical axis OA is the positive direction. In addition, the values of various parameters or coefficients of the aspheric mathematical formula of each aspheric lens can be set separately to determine the focal length of each aspheric lens.

In another embodiment, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 may all be free-form surface lenses, or be aspheric lenses or Freeform lens. Alternatively, at least one of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 may have an aspheric surface and a free-form surface at the same time, instead of This is the limit.

In another embodiment, the first lens L1 , the second lens L2 , the third lens L3 , the fourth lens L4 , the fifth lens L5 and the sixth lens L6 may all be aspheric lenses. For example, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are aspheric lenses whose object-side surface and image-side surface are all aspheric surfaces. .

In addition, in one embodiment, the first lens L1 can be a glass lens made of glass material; and the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 At least one of them may respectively be a plastic lens made of plastic material, or a glass lens made of glass material. Wherein, the plastic material may include, but not limited to, polycarbonate (polycarbonate), cyclic olefin copolymer (such as APEL), and polyester resin (such as OKP4 or OKP4HT), etc., or at least one of the aforementioned three of mixed materials.

In one embodiment, the object-side surface S1 and/or the image-side surface S2 of the first lens L1 can be aspheric, and the object-side surface S1 can have a positive curvature; the image-side surface S2 can have a curvature, for example is positive or negative curvature.

As shown in Figure 1, the object-side surface S1 of the first lens L1 can be a convex surface protruding toward the object side, which has a positive refractive power; the image-side surface S2 can be a concave surface concave toward the object side, which has a positive refractive power. light rate. Further, the first lens L1 may be a lens with positive diopter, including but not limited to a convex-concave lens with positive diopter.

FIG. 2 illustrates an optical lens OL2 according to a second embodiment of the present invention. The structure of the optical lens OL2 is substantially the same as that of the optical lens OL1, and the names and symbols of the components are substantially the same.

As shown in FIG. 2 , the image-side surface S2 of the first lens L1 of the optical lens OL2 may be a convex surface protruding toward the image side, which has a negative refractive power. In other words, the first lens L1 may also be a biconvex lens with positive diopter.

In one embodiment, the object-side surface S3 and/or the image-side surface S4 of the second lens L2 may be aspheric, and the object-side surface S3 may have a curvature, such as negative or positive curvature; The image-side surface S4 may have a positive curvature.

As shown in Figures 1 and 2, the object side surface S3 of the second lens L2 of the optical lens OL1 can be a concave surface concave toward the image side, which has a negative curvature; the object side of the second lens L2 of the optical lens OL2 The surface S3 may be a convex surface protruding toward the object side, which has a positive refractive index. The image-side surfaces S4 of the optical lens OL1 and the optical lens OL2 are both concave surfaces concave toward the object side, and have positive refractive powers. Further, the second lens L2 may be a lens with negative diopter, including but not limited to a biconcave lens with negative diopter, or a convex-concave lens with negative diopter.

Referring to Fig. 1 and Fig. 2 at the same time. In one embodiment, the object-side surface S5 and/or the image-side surface S6 of the third lens L3 can be aspherical, and the object-side surface S5 can be a convex surface protruding toward the object side, which has a positive refractive power; The side surface S6 may be a convex surface protruding toward the image side, which has a negative curvature. The third lens L3 may be a lens with positive diopter, including but not limited to a biconvex lens with positive diopter.

In one embodiment, the object-side surface S7 and/or the image-side surface S8 of the fourth lens L4 can be aspheric, and the object-side surface S7 can be a convex surface protruding toward the object side, which has a positive refractive index; The side surface S8 may be a concave surface concave toward the object side, which has a positive refractive index. The fourth lens L4 may be a lens with negative diopter, including but not limited to a convex-concave lens with negative diopter.

In one embodiment, the object-side surface S9 and/or the image-side surface S10 of the fifth lens L5 can be aspheric, and the object-side surface S9 can be a concave surface concave toward the image side, which has a negative refractive power; The side surface S10 may be a convex surface protruding toward the image side, which has a negative refractive power. The fifth lens L5 may be a lens with positive diopter, including but not limited to a meniscus lens with positive diopter.

In one embodiment, the object-side surface S11 and/or the image-side surface S12 of the sixth lens L6 can be aspheric, and the object-side surface S11 can be a concave surface concave toward the image side, which has a negative refractive power; The side surface S12 may be a concave surface concave toward the object side, which has a positive refractive power. The sixth lens L6 may be a lens with negative diopter, including but not limited to a biconcave lens with negative diopter.

In addition, as shown in FIGS. 1 and 2 , if the image-side surface S12 of the sixth lens L6 is aspheric, the image-side surface S12 may include an inflection point IF. Wherein, the distance from the inflection point IF to the optical axis OA is h6; the radius of the sixth lens L6 is H6. Then the optical lenses OL1 and OL2 can satisfy the condition of h6/H6<1.0. Further, the optical lenses OL1 and OL2 may satisfy the conditions of 0.40≤h6/H6 or 0.45≤h6/H6, and/or h6/H6≤0.75 or h6/H6≤0.65.

In another embodiment, h6 may be the shortest distance or vertical distance from the inflection point IF of the sixth lens L6 to the optical axis OA; and H6 may be the distance from the outer diameter of the sixth lens L6 to the optical axis OA, Examples are minimum distance values or vertical distance values.

In another embodiment, the inflection point IF can also be the position closest to the imaging plane I on the image-side surface S12 of the sixth lens L6; in yet another embodiment, H6 can also be defined as the position of the sixth lens L6 Effective aperture or mechanism outer diameter, or defined as the beam outer diameter of the sixth lens L6.

As shown in FIG. 1 and FIG. 2 , the optical lenses OL1 and OL2 may further include a diaphragm St and a filter F. The diaphragm St can be arranged on the object side of the first lens L1, or between any two lenses L1-L6 in the optical lens OL1, or between the sixth lens L6 and the imaging surface I; the filter F It can be arranged between the sixth lens L6 and the imaging surface I, wherein the filter F can be an infrared filter (IR Filter). Furthermore, a photoelectric conversion unit or an image capture unit can be arranged on the imaging surface I, which can sense the light beams passing through the optical lenses OL1 and OL2. In addition, the optical lenses OL1 and OL2 can further include a protective sheet C, which can be arranged between the imaging surface I and the optical filter F; in another embodiment, the protective sheet C can be integrated into the optical filter F, and also The cost and thickness of the protective sheet C can be saved. However, the optical lenses OL1 and OL2 are not limited thereto.

Table 1 lists the detailed data of an embodiment of the optical lens OL1, which includes the effective focal length, radius of curvature, thickness, refractive index, and Abbe number of each lens. Among them, the radius of curvature and the thickness are in millimeters, and the surface codes of the lenses are arranged sequentially from the object side to the image side, for example: "S1" represents the object-side surface S1 of the first lens L1, and "S2" represents the first lens The image-side surface S2 of L1, "S" represents the stop, "S13" and "S14" represent the object-side surface and image-side surface of the filter F, respectively, and the object-side and image-side surfaces of the plate glass C are respectively " S15" and "S16" and so on. In addition, "thickness" represents the distance between the surface and a surface adjacent to the image side, for example, the "thickness" of surface S1 is the distance from surface S1 to surface S2, and the "thickness" of surface S2 is the distance from surface S2 to surface S3 .

Table I

If any one of the object side surfaces S1, S3, S5, S7, S9, S11 and image side surfaces S2, S4, S6, S8, S10, S12 is aspherical, then the coefficients of the aspheric mathematical formulas of each surface can be shown in Table 2 shown.

Table II

K A4 A6 A8 A10 A12 A14 S1 -9.61 0.0012 -9.595e-5 6.236e-6 -3.756e-7 1.425e-8 0 S2 0 -0.000854 -4.1834e-5 1.7561e-5 -1.3581e-6 3.62e-8 0 S3 -44.74554 0.001193 -9.144e-5 6.472e-6 -4.15e-7 -1.2525e-8 0

S4 2.981823 0.001234 -6.816e-5 -3.177e-6 2.980e-8 1.719e-9 0 S5 0 -0.001038 -2.470e-5 3.5952e-6 -2.063e-7 3.568e-9 0 S6 -10.5108 -0.00303 0.0001286 -8.939e-6 3.2e-7 -6.6e-9 0 S7 -1.021439 -0.0009023 4.1594e-5 -2.4416e-7 -6.682e-9 -8.021e-10 0 S8 -5.519108 0.002447086 -0.00012675082 8.0085112e-6 -2.1787441e-7 1.8467446e-9 0 S9 -3.885656 0.0003165 -0.0001261 1.1283e-5 -6.9186e-7 1.8303e-8 -1.866e-010 S10 -6.748573 -0.001632 -0.00014 2.298e-5 -1.294e-6 2.536e-8 -3.213e-11 S11 0 -0.0055 -0.000169 4.7655e-5 -3.2e-6 9.046e-8 -8.894e-10 S12 -7.198051 -0.00434 0.0002174 -7.4581e-6 1.324e-7 -1.03253e-9 1.2604e-12

FIG. 3A shows a field curvature curve of the optical lens OL1. Among them, the curves T and S respectively show the aberrations of the optical lens OL1 for Tangential Rays and Sagittal Rays. The figure shows that the tangent field curvature and sagittal field curvature of light beams with wavelengths of 436 nanometers (nanometer, nm), 546 nanometers and 656 nanometers are all controlled within a good range.

FIG. 3B shows a distortion curve of the optical lens OL1. The figure shows that the distortion rates of beams with wavelengths of 436 nanometers, 546 nanometers and 656 nanometers are all controlled within the range of (-0.5%, +0.5%).

FIG. 4 shows a Ray Fan simulation diagram of the optical lens OL1. Among them, multiple sets of simulation data are simulated according to different image heights Y and light beams with three different wavelengths of 436 nanometers, 546 nanometers and 656 nanometers respectively.

Table 3 lists the detailed data of an embodiment of the optical lens OL2; , S4, S6, S8, S10, and S12 are aspheric surfaces, then the coefficients of the aspheric mathematical formulas on each surface can be shown in Table 4.

Table three

Table four

K A4 A6 A8 A10 A12 A14 A16 S1 -14.77751 0.000616513 -0.0001022 1.06e-7 5.37e-8 -7.16e-9 4.77e-10 0 S2 0 0.001057971 -0.0002778 1.77e-5 -8.70e-7 2.22e-8 3.00e-10 0 S3 9.981192 -0.001221668 -0.000116 1.49e-5 -9.76e-7 2.86e-8 7.47e-11 0 S4 -4.36996 -0.000905178 5.043e-5 3.67e-7 -2.16e-7 6.32e-9 5.66e-11 0 S5 -5.040972 0.000260241 -7.08e-5 7.68e-6 -3.47e-7 1.03e-8 -1.59e-10 0 S6 -13.42125 -0.001954462 0.0001266 -7.81e-6 2.20e-7 -2.07e-9 1.64e-11 0 S7 -1.730793 -0.000992721 6.701e-5 -2.35e-6 3.47e-8 -9.51e-10 3.41e-11 -2.3e-12 S8 -6.222496 0.001496533 -0.0001122 8.65e-6 -3.83e-7 7.01e-9 8.39e-11 -4.7e-12 S9 -2.085693 0.002514296 -0.000277 2.98e-5 -1.67e-6 4.52e-8 -6.51e-10 3.85e-15 S10 -5.536593 -0.000487966 -5.094e-5 2.02e-5 -1.01e-6 1.85e-8 -1.89e-10 8.25e-13 S11 0 -0.002302029 -0.000274 5.09e-5 -3.63e-6 1.26e-7 -1.72e-9 -9.4e-13 S12 -8.788302 -0.00282851 0.0001279 -4.40e-6 8.29e-8 -7.83e-10 2.41e-12 -1.0e-14

FIG. 5A shows a field curvature curve of the optical lens OL2. Wherein, the curves T and S respectively show the aberrations of the optical lens OL2 for the tangential beam and the sagittal beam. The figure shows that the tangent field curvature and sagittal field curvature of the light beams with wavelengths of 436 nm, 546 nm and 656 nm are all controlled within a good range.

FIG. 5B shows a distortion curve of the optical lens OL2. The figure shows that the distortion rates of beams with wavelengths of 436 nanometers, 546 nanometers and 656 nanometers are all controlled within the range of (-0.5%, +0.5%).

FIG. 6 is a simulation diagram of an optical fan diagram analysis of the optical lens OL2. Among them, multiple sets of simulation data are obtained by simulating light beams with three different wavelengths of 436 nanometers, 546 nanometers and 656 nanometers respectively according to different image heights Y.

FIG. 7 shows the optical lens OL3 of the third embodiment of the present invention. The structure of the optical lens OL3 is substantially the same as that of the optical lenses OL1 and OL2 in FIG. 1 and FIG. 2 , and substantially the same component names and symbols are used.

As shown in Figure 7, the difference between the optical lens OL3 and the optical lenses OL1, OL2 is that: the object-side surface S1 of the first lens L1 of the optical lens OL3 can be a convex surface protruding toward the object side, which has a positive refractive power; The side surface S2 is a concave surface concave toward the object side, which has a positive refractive power. Further, the first lens L1 of the optical lens OL3 may be a lens with positive diopter, including but not limited to a convex-concave lens with positive diopter.

On the other hand, the object-side surface S3 of the second lens L2 of the optical lens OL3 can be a convex surface protruding toward the object side, which has a positive optical power; and the image-side surface S4 can be a concave surface concave toward the object side, which Has a positive refractive power. Further, the second lens L2 of the optical lens OL3 may adopt a lens with negative diopter, including but not limited to a convex-concave lens with negative diopter.

In addition, in another embodiment, the protective sheet C of the optical lens OL3 is integrated into the filter F, so the protective sheet C can be omitted.

Table 5 lists the detailed data of an embodiment of the optical lens OL3; , S4, S6, S8, S10, and S12 are aspheric surfaces, the coefficients of each aspheric surface can be shown in Table 6.

Table five

Table six

K A4 A6 A8 A10 A12 A14 A16 S1 -6.32 0.001132 -0.000207 -4.32e-6 5.37e-8 -2.65e-8 0 0 S2 0.00 0.00230 -0.00058 2.38e-5 -1.51e-6 4.77e-8 0 0 S3 -7.88 -0.00192 -0.000195 2.12e-5 -2.01e-6 6.13e-8 0 0 S4 -4.54 -0.00149 -0.000103 1.82e-5 -1.69e-6 4.79e-8 0 0 S5 0.00 0.000434 -0.000257 1.37e-5 -2.68e-7 6.44e-9 0 0 S6 -10.35 -0.00336 0.000090 1.23e-6 -5.17e-7 2.00e-8 0 0 S7 -0.41 -0.00503 0.000216 -4.47e-6 9.90e-8 -6.50e-9 0 0 S8 -5.66 0.000822 -0.000158 1.31e-5 -4.90e-7 5.10e-9 0 0 S9 2.34 0.00282 -0.000233 2.80e-5 -1.56e-6 9.95e-9 8.52e-10 0 S10 -4.24 -0.00193 -0.000057 2.51e-5 -1.18e-6 -1.78e-8 1.42e-9 0 S11 0.00 -0.00369 -0.000279 6.02e-5 -4.58e-6 1.53e-7 -1.9e-9 0 S12 -7.31 -0.00383 0.000200 -7.71e-6 1.61e-7 -1.73e-9 7.16e-12 0

In addition, Table 7 lists the effective focal length EFL, aperture value Fno, half angle view ω (half angle view), image height Y, and total lens length TTL of the optical lenses OL1, OL2, and OL3.

Table Seven

parameter Optical Lens OL1 Optical Lens OL2 Optical Lens OL3 EFL(mm) 11.9 10.62 11.89 Fno 1.85 1.85 1.88 ω(°) 32.90 32.90 37.30 Y(mm) 8.00 8.00 8.00 TTL(mm) 16.40 16.30 14.74

FIG. 8A shows a field curvature curve of the optical lens OL3. Wherein, the curves T and S respectively show the aberrations of the optical lens OL3 for the tangential beam and the sagittal beam. The figure shows that the tangent field curvature and sagittal field curvature of the light beams with wavelengths of 436 nm, 546 nm and 656 nm are all controlled within a good range.

FIG. 8B shows a distortion curve of the optical lens OL3. The figure shows that the distortion rates of beams with wavelengths of 436 nanometers, 546 nanometers and 656 nanometers are all controlled within the range of (-0.5%, +0.5%).

FIG. 9 is a simulation diagram of an optical fan diagram analysis of the optical lens OL3. Among them, multiple sets of simulated data in FIG. 9 are obtained by simulating light beams with three wavelengths of 436 nanometers, 546 nanometers and 656 nanometers according to different image heights Y.

It can be seen from Fig. 3A to Fig. 6 and Fig. 8A to Fig. 9 that the spherical aberration, curvature of field and distortion of the optical lenses OL1, OL2 and OL3 can all be well corrected, and the analysis data of the light fan diagram also fall within the standard range.

FIG. 10 shows the optical lens OL4 of the fourth embodiment of the present invention. The structure of the optical lens OL4 is substantially the same as that of the optical lens OL3 in FIG. 7 , and the same component names and symbols are used. Wherein, the image side surface S2 of the first lens L1 of the optical lens OL4 can be a concave surface concave toward the object side, which has a positive refractive power; and the object side surface S3 of the second lens L2 of the optical lens OL4 can be toward the object side. A convex surface with convex sides that has a positive curvature. Further, the first lens L1 of the optical lens OL4 may be a convex-concave lens with positive diopter, and the second lens L2 may be a convex-concave lens with negative diopter, but this is not intended to limit the present invention.

Table 8 lists the detailed data of an embodiment of the optical lens OL4; , S4, S6, S8, S10, and S12 are aspheric surfaces, the coefficients of each aspheric surface can be shown in Table 9.

table eight

Table nine

S1 S2 S3 S4 S5 S6 K -18.11 -39.98 43.34 -3.55 34.63 -15.05 A4 2.218e-02 6.039e-03 -7.728e-03 -6.300e-03 1.171e-02 -7.148e-03 A6 -1.166e-02 -6.818e-03 -2.061e-03 2.530e-03 8.412e-04 7.217e-03 A8 2.154e-03 5.571e-04 7.269e-04 -5.717e-04 -8.036e-05 -8.745e-04 A10 -6.934e-04 -3.746e-04 8.183e-05 -1.174e-04 1.362e-04 -7.866e-05 A12 7.624e-05 1.768e-04 -4.230e-05 3.042e-05 8.428e-06 8.845e-05 A14 -1.851e-05 -3.605e-05 2.096e-05 -1.374e-07 -3.272e-06 6.726e-06

A16 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 S7 S8 S9 S10 S11 S12 K -5.55 -10.06 1.66 -3.61 -47.42 -7.63 A4 -6.409e-03 1.000e-02 7.477e-03 -1.700e-02 -1.595e-02 -1.839e-02 A6 2.245e-03 -3.047e-03 2.271e-03 2.812e-03 -2.260e-03 2.789e-03 A8 -7.957e-04 5.767e-04 5.884e-04 9.735e-04 1.672e-03 -3.463e-04 A10 8.029e-05 -1.120e-04 -2.774e-04 -2.977e-04 -4.173e-04 2.562e-05 A12 -3.160e-06 1.360e-05 3.470e-05 4.310e-05 4.701e-05 -1.386e-06 A14 1.483e-06 -6.243e-07 -1.215e-06 -3.508e-06 -1.905e-06 5.923e-08 A16 -3.074e-07 1.356e-08 -2.603e-08 1.150e-07 8.401e-10 -1.393e-09

FIG. 11 shows the optical lens OL5 of the fifth embodiment of the present invention. The structure of the optical lens OL5 is substantially the same as that of the optical lens OL4 in FIG. 10 , and the same component names and symbols are used.

Table ten lists the detailed data of an embodiment of optical lens OL5; , S4, S6, S8, S10, and S12 are aspheric surfaces, then the coefficients of each aspheric surface can be shown in Table 11.

table ten

Table Eleven

S1 S2 S3 S4 S5 S6 K -18.64 -50.00 44.02 -3.58 33.09 -14.90 A4 2.204e-02 5.927e-03 -7.571e-03 -6.388e-03 1.166e-02 -6.975e-03 A6 -1.169e-02 -6.858e-03 -2.028e-03 2.520e-03 8.346e-04 7.269e-03 A8 2.146e-03 5.512e-04 7.295e-04 -5.679e-04 -8.331e-05 -8.671e-04 A10 -6.917e-04 -3.752e-04 8.176e-05 -1.149e-04 1.350e-04 -7.769e-05 A12 8.136e-05 1.760e-04 -4.160e-05 3.125e-05 8.051e-06 8.867e-05 A14 -1.279e-05 -3.734e-05 2.191e-05 5.441e-08 -3.356e-06 6.806e-06 A16 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 0.000e+00 S7 S8 S9 S10 S11 S12 K -5.63 -10.06 1.66 -3.61 -50.00 -7.82 A4 -6.482e-03 1.003e-02 7.471e-03 -1.701e-02 -1.593e-02 -1.841e-02 A6 2.231e-03 -3.040e-03 2.270e-03 2.811e-03 -2.258e-03 2.789e-03 A8 -7.980e-04 5.775e-04 5.885e-04 9.733e-04 1.672e-03 -3.463e-04 A10 8.041e-05 -1.119e-04 -2.774e-04 -2.977e-04 -4.173e-04 2.562e-05 A12 -3.059e-06 1.362e-05 3.471e-05 4.309e-05 4.701e-05 -1.386e-06 A14 1.507e-06 -6.173e-07 -1.215e-06 -3.508e-06 -1.905e-06 5.922e-08 A16 -3.044e-07 1.533e-08 -2.625e-08 1.149e-07 8.944e-10 -1.394e-09

FIG. 12 shows the optical lens OL6 of the sixth embodiment of the present invention. The structure of the optical lens OL6 is substantially the same as that of the optical lenses OL4 and OL5 in FIGS. 10 and 11 , and the same component names and symbols are used.

Table 12 lists the detailed data of an embodiment of optical lens OL6; If any one of S2, S4, S6, S8, S10, and S12 is an aspheric surface, the coefficients of each aspheric surface can be shown in Table 13.

Table 12

Table 13

S1 S2 S3 S4 S5 S6 K -17.82 -50.00 39.95 -3.58 43.58 -15.07 A4 2.231E-02 6.348E-03 -8.118E-03 -6.419E-03 1.191E-02 -7.458E-03 A6 -1.160E-02 -6.629E-03 -2.196E-03 2.472E-03 9.658E-04 7.064E-03 A8 2.203E-03 6.393E-04 6.955E-04 -5.686E-04 -5.663E-05 -9.183E-04 A10 -6.473E-04 -3.482E-04 7.575E-05 -1.029E-04 1.342E-04 -8.443E-05

A12 1.129E-04 1.829E-04 -4.229E-05 3.701E-05 6.928E-06 8.980E-05 A14 6.934E-06 -3.685E-05 2.353E-05 8.471E-07 -2.669E-06 7.883E-06 A16 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 S7 S8 S9 S10 S11 S12 K -5.47 -10.12 1.66 -3.60 -50.00 -7.34 A4 -6.341E-03 9.964E-03 7.498E-03 -1.701E-02 -1.595E-02 -1.820E-02 A6 2.258E-03 -3.054E-03 2.271E-03 2.813E-03 -2.261E-03 2.794E-03 A8 -7.926E-04 5.764E-04 5.884E-04 9.736E-04 1.671E-03 -3.462E-04 A10 8.027E-05 -1.119E-04 -2.774E-04 -2.976E-04 -4.174E-04 2.562E-05 A12 -3.280E-06 1.361E-05 3.470E-05 4.310E-05 4.700E-05 -1.386E-06 A14 1.435E-06 -6.231E-07 -1.216E-06 -3.507E-06 -1.906E-06 5.923E-08 A16 -3.189E-07 1.280E-08 -2.615E-08 1.150E-07 7.832E-10 -1.393E-09

In addition, Table 14 is a collection of parameters in the various embodiments of the optical lenses OL1-OL6.

Table Fourteen

According to the embodiment of the present invention, the optical lenses OL1 , OL2 , OL3 , OL4 , OL5 , and OL6 can produce high-quality images with high resolution and low chromatic aberration under the conditions of reduced cost and miniaturization.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (11)

1. An optical lens, characterized in that, from the object side to the image side, it comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens , the first lens, the third lens and the fifth lens have the same optical refraction effect, the second lens, the fourth lens and the sixth lens have the same optical refraction effect, and satisfy 0.65≤F123/EFL and F123/EFL≤1.00, wherein EFL is the effective focal length of the optical lens, and F123 is the overall focal length of the first lens, the second lens and the third lens. 2. An optical lens is characterized in that, from the object side to the image side, it comprises in sequence: a first lens with a positive diopter, a second lens with a diopter, a third lens with a positive diopter, a lens with a diopter The fourth lens, a fifth lens with positive diopter and a sixth lens with negative diopter meet the requirements of 0.65≤F123/EFL and F123/EFL≤1.00, where EFL is the effective focal length of the optical lens, and F123 is the The overall focal length of the first lens, the second lens and the third lens. 3. The optical lens according to claim 1 or 2, wherein the first lens is a glass lens. 4. An optical lens, characterized in that, from the object side to the image side, it comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens , the first lens, the third lens and the fifth lens have the same optical refraction effect, the second lens, the fourth lens and the sixth lens have the same optical refraction effect, and satisfy 0.65≤F123/EFL and F123/EFL≤1.00, wherein EFL is the effective focal length of the optical lens, F123 is the overall focal length of the first lens, the second lens and the third lens, and the first lens is a glass lens. 5. The optical lens according to claim 1, 2 or 4, wherein at least one of the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is a plastic lens. 6. The optical lens according to claim 1, 2 or 4, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens At least one of them is an aspherical lens. 7. The optical lens according to claim 1, 2 or 4, wherein an image side surface of the sixth lens is an aspheric surface, the image side surface includes an inflection point, and the inflection point reaches the light The distance between the axes is h6, the radius of the sixth lens is H6, and h6/H6<1.0. 8. The optical lens according to claim 1, 2 or 4, further comprising that the optical lens satisfies 0.50≤EFL/TTL, EFL/TTL≤1.00, 1.30≤Fno, Fno≤2.80 and TTL≤20.0mm At least one condition of , wherein Fno is an aperture coefficient of the optical lens OL1, and TTL is the distance from an object-side surface of the first lens to an imaging plane. 9. The optical lens according to claim 1, 2 or 4, wherein the first lens has a refractive index nd1 and Abbe number vd1, the fourth lens has a refractive index nd4, and 1.40≤nd1, 35≤ vd1 or vd4≤40. 10. The optical lens according to claim 1, 2 or 4, wherein the fifth lens has an Abbe number vd5, the sixth lens has an Abbe number vd6, and │vd5-vd6│≦10. 11. The optical lens according to claim 1, 2 or 4, wherein the first lens has an image-side surface with positive or negative refractive power, and/or the second lens has a positive Object-side surfaces of refractive or negative refractive power.