CN108375825B - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN108375825B CN108375825B CN201810414619.5A CN201810414619A CN108375825B CN 108375825 B CN108375825 B CN 108375825B CN 201810414619 A CN201810414619 A CN 201810414619A CN 108375825 B CN108375825 B CN 108375825B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The application discloses an optical imaging lens, which sequentially comprises a first lens and a second lens from an object side to an image side along an optical axis, wherein the first lens can have negative focal power; a second lens that may have a positive optical power; a third lens that may have a positive optical power; a fourth lens element having a negative refractive power, the object-side surface of the fourth lens element being concave; a fifth lens that may have positive optical power; and a sixth lens element having a negative refractive power, wherein the object-side surface of the sixth lens element is convex and the image-side surface of the sixth lens element is concave, and an effective focal length f5 of the fifth lens element and a combined focal length f23 of the second and third lens elements are such that: the f5/f23 is less than or equal to 0.6.
Description
Technical Field
The present invention relates to an optical imaging lens, and more particularly, to an optical imaging lens composed of six lenses.
Background
With the diversified development of smart phones, the requirements of consumers on the photographing function carried by the smart phones are higher and higher, and the photographing function of most high-end mobile phones in the market is stronger and stronger. In order to meet the market demand, the camera lens of the mobile phone is required to have a larger view angle in addition to the characteristics of high pixel, high resolution, high relative brightness and the like.
Therefore, the present application proposes an optical imaging system suitable for portable electronic products, which has the characteristics of ultra-thinness, large field angle, excellent imaging quality, low sensitivity, and the like.
Disclosure of Invention
The technical solution provided by the present application at least partially solves the technical problems described above.
According to an aspect of the present application, there is provided an optical imaging lens that may include, in order from an object side to an image side along an optical axis, a first lens that may have a negative power; a second lens that may have a positive optical power; a third lens that may have a positive optical power; a fourth lens element having a negative optical power, the object side surface of the fourth lens element being concave; a fifth lens that may have a positive optical power; and a sixth lens element having a negative power, wherein the object-side surface of the sixth lens element is convex and the image-side surface of the sixth lens element is concave, and an effective focal length f5 of the fifth lens element and a combined focal length f23 of the second and third lens elements are such that: the | f5/f23| is less than or equal to 0.6.
In one embodiment, the effective focal length f of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface may satisfy: f is not less than 0.7 and not more than 1.0.
In one embodiment, an air interval T12 of the first lens and the second lens on the optical axis and an air interval T23 of the second lens and the third lens on the optical axis may satisfy: T12/T23<1.5.
In one embodiment, the abbe number V1 of the first lens, the abbe number V2 of the second lens and the abbe number V3 of the third lens may satisfy: 40< (V1 + V2+ V3)/3 < -60.
In one embodiment, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length f6 of the sixth lens may satisfy: 1.0< | f/f1| + | f/f4| + | f/f6| <2.50.
In one embodiment, the effective focal length f of the optical imaging lens and the curvature radius R5 of the object side surface of the third lens may satisfy: f/| R5| <0.5.
In one embodiment, a radius of curvature R3 of the object-side surface of the second lens and a radius of curvature R6 of the image-side surface of the third lens may satisfy: -2.0 sR3/R6 < -0.5.
In one embodiment, a radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R10 of the image-side surface of the fifth lens may satisfy: l (R9-R10)/(R9 + R10) | <0.5.
In one embodiment, the central thickness CT1 of the first lens, the central thickness CT2 of the second lens, and the central thickness CT3 of the third lens may satisfy: CT 3/(CT 1+ CT 2) <1.5.
In one embodiment, the central thickness CT4 of the fourth lens, the central thickness CT5 of the fifth lens, and the central thickness CT6 of the sixth lens may satisfy: 0.5-straw CT5/(CT 4+ CT 6) <2.0.
In one embodiment, the object-side surface of the second lens element can be convex and the image-side surface can be concave.
In one embodiment, the image side surface of the fourth lens may be concave.
In one embodiment, the object-side surface of the fifth lens element can be concave and the image-side surface can be convex.
According to another aspect of the present application, there is also provided an optical imaging lens that may include, in order from an object side to an image side along an optical axis, a first lens that may have a negative power; a second lens that may have a positive optical power; a third lens that may have a positive optical power; a fourth lens element having a negative optical power, the object side surface of the fourth lens element being concave; a fifth lens that may have a positive optical power; and a sixth lens element which may have a negative refractive power, an object-side surface of which is a convex surface, and an image-side surface of which is a concave surface, wherein an air interval T12 between the first lens element and the second lens element on the optical axis and an air interval T23 between the second lens element and the third lens element on the optical axis may satisfy: T12/T23<1.5.
According to still another aspect of the present application, there is also provided an optical imaging lens that may include, in order from an object side to an image side along an optical axis, a first lens that may have a negative power; a second lens that may have a positive optical power; a third lens which may have positive optical power; a fourth lens element having a negative optical power, the object side surface of the fourth lens element being concave; a fifth lens that may have a positive optical power; and a sixth lens element with negative refractive power, wherein the object-side surface of the sixth lens element is convex and the image-side surface of the sixth lens element is concave, and the effective focal length f of the optical imaging lens element and the radius of curvature R5 of the object-side surface of the third lens element satisfy: f/| R5| <0.5.
According to still another aspect of the present application, there is also provided an optical imaging lens that may include, in order from an object side to an image side along an optical axis, a first lens that may have a negative power; a second lens that may have a positive optical power; a third lens that may have a positive optical power; a fourth lens element having a negative optical power, the object side surface of the fourth lens element being concave; a fifth lens that may have a positive optical power; and a sixth lens element with negative power, wherein the object-side surface of the sixth lens element is convex and the image-side surface of the sixth lens element is concave, and the radius of curvature R3 of the object-side surface of the second lens element and the radius of curvature R6 of the image-side surface of the third lens element satisfy: -2.0 sR3/R6 < -0.5.
According to yet another aspect of the present application, there is also provided an optical imaging lens that may include, in order from an object side to an image side along an optical axis, a first lens that may have a negative power; a second lens which may have a positive optical power; a third lens which may have positive optical power; a fourth lens element having a negative refractive power, the object-side surface of the fourth lens element being concave; a fifth lens that may have a positive optical power; and a sixth lens element having a negative power, wherein the object-side surface of the sixth lens element is convex and the image-side surface of the sixth lens element is concave, and wherein a central thickness CT4 of the fourth lens element, a central thickness CT5 of the fifth lens element, and a central thickness CT6 of the sixth lens element satisfy: 0.5-straw CT5/(CT 4+ CT 6) <2.0.
By the optical imaging lens configured as above, at least one beneficial effect of ultra-thinning, large field angle, miniaturization, high imaging quality, balanced aberration, low sensitivity, low cost and the like can be achieved.
Drawings
The above and other advantages of embodiments of the present application will become apparent from the detailed description made with reference to the following drawings, which are intended to illustrate exemplary embodiments of the present application and not to limit the same. In the drawings:
fig. 1 is a schematic structural view showing an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 is a schematic view showing a configuration of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic view showing a configuration of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application; and
fig. 10A to 10D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, expressions such as first, second, etc. are used only for distinguishing one feature from another feature, and do not indicate any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens without departing from the teachings of the present application.
In the drawings, the thickness, size and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after the list of listed features, that the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
As used herein, the terms "substantially," "about," and the like are used as words of table approximation, not as words of table degree, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. Herein, a surface closest to the object in each lens is referred to as an object side surface, and a surface closest to the imaging surface in each lens is referred to as an image side surface.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present application is further described below with reference to specific examples.
An optical imaging lens according to an exemplary embodiment of the present application has, for example, six lenses, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in order from the object side to the image side along the optical axis.
In an exemplary embodiment, the first lens may have a negative power; the second lens may have a positive optical power; the third lens may have a positive optical power; the fourth lens can have negative focal power, and the object side surface of the fourth lens can be a concave surface; the fifth lens may have a positive optical power; and the sixth lens element can have a negative power, and the object-side surface can be convex and the image-side surface can be concave. By reasonably controlling the distribution of positive and negative focal powers of all lenses, the low-order aberration of a control system can be effectively balanced, so that the optical imaging lens obtains better imaging quality, and the characteristic of high pixels can be realized.
In an exemplary embodiment, the object-side surface of the second lens element may be convex and the image-side surface may be concave.
In an exemplary embodiment, the image-side surface of the fourth lens may be concave.
In an exemplary embodiment, the object-side surface of the fifth lens element may be concave, and the image-side surface may be convex.
Through the face type of further control second lens, fourth lens and fifth lens, can be favorable to guaranteeing optical imaging lens's equipment stability, more be favorable to realizing the production of camera lens batch.
In an exemplary embodiment, the effective focal length f of the optical imaging lens, half of the maximum field angle HFOV of the optical imaging lens, and the distance TTL on the optical axis from the object-side surface of the first lens to the imaging surface may satisfy: 0.7 ≦ f × tan (HFOV)/TTL <1.0, and more specifically, 0.71 ≦ f × tan (HFOV)/TTL ≦ 0.92 may be further satisfied. By reasonably distributing the effective focal length, the maximum field angle and the total optical length of the optical imaging lens, the size of the system can be effectively compressed, and the compact size characteristic of the lens is ensured.
In an exemplary embodiment, an effective focal length f5 of the fifth lens and a combined focal length f23 of the second lens and the third lens may satisfy: the ratio of f5/f23 is not more than 0.6, more specifically, 0.05 not more than 0.5/f 23 not more than 0.57. By effectively controlling the focal power of the second lens, the third lens and the fifth lens, the astigmatism and the distortion of the system can be effectively balanced.
In an exemplary embodiment, an air interval T12 of the first lens and the second lens on the optical axis and an air interval T23 of the second lens and the third lens on the optical axis may satisfy: T12/T23<1.5, more specifically, 0.17. Ltoreq. T12/T23. Ltoreq.1.39 can be further satisfied. The air space between the first lens and the third lens is reasonably adjusted, so that the light deflection angle is favorably slowed down, and the system sensitivity is reduced.
In an exemplary embodiment, an abbe number V1 of the first lens, an abbe number V2 of the second lens, and an abbe number V3 of the third lens may satisfy: 40< (V1 + V2+ V3)/3 <60, more specifically, 45.27 ≦ (V1 + V2+ V3)/3 ≦ 56.10 may be further satisfied. By reasonably configuring the abbe numbers of the first lens, the second lens and the third lens, the dispersion of the optical system can be effectively reduced.
In an exemplary embodiment, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length f6 of the sixth lens may satisfy: 1.0< | f/f1| + | f/f4| + | f/f6| <2.50, more specifically, can further satisfy ≦ f/f1| + | f/f4| + | f/f6| < 2.22. By reasonably distributing the focal power of the first lens, the fourth lens and the sixth lens, the spherical aberration, the coma aberration, the astigmatism and the distortion of the system can be effectively balanced.
In an exemplary embodiment, an effective focal length f of the optical imaging lens and a radius of curvature R5 of the object side surface of the third lens may satisfy: f/| R5| <0.5, more specifically, 0.01 ≦ f/| R5| ≦ 0.34 may be further satisfied. Through reasonable control of the effective focal length of the optical imaging lens and the curvature radius of the object side surface of the third lens, astigmatism and distortion of a system can be reduced.
In an exemplary embodiment, a radius of curvature R3 of the object-side surface of the second lens and a radius of curvature R6 of the image-side surface of the third lens may satisfy: -2.0 sR3/R6 < -0.5, more specifically, -1.98. Ltoreq. R3/R6. Ltoreq-0.78. By reasonably distributing the curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the third lens, the optical system can be better matched with the chief ray angle of the chip.
In an exemplary embodiment, a radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R10 of the image-side surface of the fifth lens may satisfy: | (R9-R10)/(R9 + R10) | <0.5, more specifically, 0.03 ≦| (R9-R10)/(R9 + R10) | ≦ 0.41 may be further satisfied. By reasonably distributing the curvature radii of the object side surface and the image side surface of the fifth lens, the astigmatism and the coma aberration of the system can be effectively improved.
In an exemplary embodiment, the central thickness CT1 of the first lens, the central thickness CT2 of the second lens, and the central thickness CT3 of the third lens may satisfy: CT 3/(CT 1+ CT 2) <1.5, more specifically, 0.48. Ltoreq. CT 3/(CT 1+ CT 2). Ltoreq.1.41 can be further satisfied. On one hand, the miniaturization characteristic of the lens can be ensured by reasonably distributing the central thicknesses of the first lens, the second lens and the third lens; on the other hand, through reasonable distribution of the central thickness of the lens, the light deflection tends to be relaxed, the sensitivity is reduced, and the astigmatism, the distortion and the chromatic aberration of the system are reduced.
In an exemplary embodiment, the central thickness CT4 of the fourth lens, the central thickness CT5 of the fifth lens, and the central thickness CT6 of the sixth lens may satisfy: 0.5 sJCT5/(CT 4+ CT 6) <2.0, more specifically, 0.91 ≦ CT 5/(CT 4+ CT 6) ≦ 1.74 may be further satisfied. By properly distributing the center thicknesses and air gaps of the fourth, fifth and sixth lenses, astigmatism and distortion of the system can be improved, while reducing the back end size of the system.
In an exemplary embodiment, the optical imaging lens may further include a stop STO for limiting a light beam, and the amount of light entering is adjusted to improve imaging quality.
Optionally, the optical imaging lens may further include a protective glass for protecting the photosensitive element on the imaging surface.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, has the advantages of improving distortion aberration and astigmatic aberration, and can make the field of view larger and more realistic. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. In addition, the use of the aspherical lens can also effectively reduce the number of lenses in the optical system.
The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. Through reasonable distribution of focal power, surface type, center thickness of each lens, on-axis distance between each lens and the like, the ultra-thinness, large field angle, miniaturization and system aberration balance of the lens can be effectively ensured, and the imaging quality is improved, so that the optical imaging lens is more favorable for production and processing and is applicable to portable electronic products.
However, it will be appreciated by those skilled in the art that the number of lenses constituting the lens barrel can be varied to achieve the various results and advantages described in the present specification without departing from the claimed technical solution. For example, the optical imaging system may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D.
Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application. As shown in fig. 1, the optical imaging system includes six lenses E1 to E6 arranged in order from the object side to the imaging side along the optical axis. The first lens E1 is provided with an object side surface S1 and an image side surface S2; the second lens E2 has an object side surface S3 and an image side surface S4; the third lens E3 has an object-side surface S5 and an image-side surface S6; the fourth lens E4 has an object-side surface S7 and an image-side surface S8; the fifth lens E5 has an object-side surface S9 and an image-side surface S10; and the sixth lens E6 has an object-side surface S11 and an image-side surface S12.
In this embodiment, the first lens E1 has a negative power; the second lens E2 has positive focal power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens E3 has positive optical power; the fourth lens element E4 has a negative focal power, and has a concave object-side surface S7 and a concave image-side surface S8; the fifth lens element E5 has positive focal power, and has a concave object-side surface S9 and a convex image-side surface S10; and the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12.
In the optical imaging system of the present embodiment, an aperture stop STO for limiting a light beam is further included, which is disposed between the second lens E2 and the third lens E3. The optical imaging system according to embodiment 1 may include a filter E7 having an object side surface S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 1.
TABLE 1
In the embodiment, six lenses are taken as an example, and the lens is ensured to be ultra-thin and miniaturized by reasonably distributing the focal length and the surface type of each lens and selecting a proper material; meanwhile, various aberrations are corrected, the sensitivity is reduced, and the resolution and the imaging quality of the lens are improved. Each aspherical surface type x is defined by the following formula:
wherein x is the distance rise from the aspheric surface vertex when the aspheric surface is at the position with the height h along the optical axis direction(ii) a c is the paraxial curvature of the aspheric surface, c =1/R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in table 1 above); k is the conic coefficient (given in table 1 above); ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the coefficients A of the higher-order terms which can be used for the respective mirror surfaces S1 to S12 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 And A 18 。
TABLE 2
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 |
| S1 | 8.5067E-02 | -8.6943E-02 | 6.0211E-02 | -2.8361E-02 | 9.0258E-03 | -1.7742E-03 | 1.7972E-04 | -6.0473E-06 |
| S2 | 4.8382E-01 | -1.2196E+00 | 2.5711E+00 | -4.1862E+00 | 5.0019E+00 | -3.9709E+00 | 1.8531E+00 | -3.7885E-01 |
| S3 | 2.0698E-01 | -8.4440E-01 | 1.2628E+00 | 1.1367E-01 | -3.9004E+00 | 6.4179E+00 | -3.6446E+00 | 0 |
| S4 | 2.0775E-02 | 8.6431E-02 | -1.2885E+00 | 6.9849E+00 | -2.0707E+01 | 2.9680E+01 | -1.6657E+01 | 0 |
| S5 | -1.3067E-01 | -2.6366E-01 | -2.5598E+00 | 3.8175E+01 | -2.5067E+02 | 7.3993E+02 | -8.3472E+02 | 0 |
| S6 | -3.1537E-01 | 9.2123E-01 | -2.4857E+00 | -2.8113E+00 | 2.7252E+01 | -5.5065E+01 | 3.6820E+01 | 0 |
| S7 | -5.3538E-01 | 1.7385E+00 | -6.7593E+00 | 1.7482E+01 | -2.9083E+01 | 2.8296E+01 | -1.2279E+01 | 0 |
| S8 | -3.1879E-01 | 5.7314E-01 | -1.1862E+00 | 1.8226E+00 | -1.9012E+00 | 1.1968E+00 | -3.2240E-01 | 0 |
| S9 | 6.9995E-02 | -6.9876E-01 | 2.0504E+00 | -2.5376E+00 | 1.4395E+00 | -1.7323E-01 | -1.6002E-01 | 4.9455E-02 |
| S10 | 8.7129E-03 | -4.3923E-01 | 1.0649E+00 | -1.6241E+00 | 1.7620E+00 | -1.1246E+00 | 3.6809E-01 | -4.7754E-02 |
| S11 | -2.7216E-01 | 1.7849E-01 | -8.3548E-02 | 2.6542E-02 | -5.4992E-03 | 7.1963E-04 | -5.4481E-05 | 1.8232E-06 |
| S12 | -1.0335E-01 | 4.3470E-02 | -1.0552E-02 | 2.6987E-04 | 5.7604E-04 | -1.6166E-04 | 1.8631E-05 | -8.0708E-07 |
Table 3 below shows effective focal lengths f1 to f6 of the respective lenses, effective focal length f of the optical imaging lens, and half ImgH of diagonal length of effective pixel area of the electro-optical sensor of the optical imaging lens in example 1.
TABLE 3
| f1(mm) | -5.04 | f(mm) | 2.28 |
| f2(mm) | 2.87 | ImgH(mm) | 3.03 |
| f3(mm) | 2.57 | ||
| f4(mm) | -3.72 | ||
| f5(mm) | 3.11 | ||
| f6(mm) | -6.33 |
In combination with tables 1 and 3 above, in this example:
f, tan (HFOV)/TTL =0.88 is satisfied between the effective focal length f of the optical imaging lens, half of the maximum field angle of the optical imaging lens, and the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15;
| f5/f23| =0.57 is satisfied between an effective focal length f5 of the fifth lens E5 and a combined focal length f23 of the second lens E2 and the third lens E3;
T12/T23=0.57 is satisfied between an air interval T12 on the optical axis of the first lens E1 and the second lens E2 and an air interval T23 on the optical axis of the second lens E2 and the third lens E3;
the abbe number V1 of the first lens E1, the abbe number V2 of the second lens E2 and the abbe number V3 of the third lens E3 satisfy (V1 + V2+ V3)/3 =56.10;
the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens E1, the effective focal length f4 of the fourth lens E4 and the effective focal length f6 of the sixth lens E6 satisfy the condition that | f/f1| + | f/f4| + | f/f6| =1.43;
f/| R5| =0.34 is satisfied between the effective focal length f of the optical imaging lens and the curvature radius R5 of the object side surface S5 of the third lens E3;
R3/R6= -1.13 is satisfied between the radius of curvature R3 of the object-side surface S3 of the second lens E2 and the radius of curvature R6 of the image-side surface S6 of the third lens E3;
a radius of curvature R9 of the object-side surface S9 of the fifth lens E5 and a radius of curvature R10 of the image-side surface S10 of the fifth lens E5 satisfy | (R9-R10)/(R9 + R10) | =0.03;
the central thickness CT4 of the fourth lens E4, the central thickness CT5 of the fifth lens E5, and the central thickness CT6 of the sixth lens E6 satisfy: 0.5 yarn (t 5)/(CT 4+ CT 6) =0.91.
Fig. 2A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 1, which represent deviation of the convergence focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents the distortion magnitude values in the case of different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. The optical imaging lenses described in embodiment 2 and the following embodiments are the same in arrangement structure as the optical imaging lens described in embodiment 1 except for parameters of the respective lenses of the optical imaging lens, such as a radius of curvature, a thickness, a conic coefficient, an effective focal length, an on-axis pitch, a high-order term coefficient of the respective mirror surfaces, and the like of the respective lenses. For the sake of brevity, descriptions similar to those of embodiment 1 will be omitted.
Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application. As shown in fig. 3, the optical imaging lens according to embodiment 2 includes six lenses E1 to E6 arranged in order from the object side to the imaging side along the optical axis. The first lens E1 has an object side surface S1 and an image side surface S2; the second lens E2 has an object side surface S3 and an image side surface S4; the third lens E3 has an object-side surface S5 and an image-side surface S6; the fourth lens E4 has an object-side surface S7 and an image-side surface S8; the fifth lens E5 has an object-side surface S9 and an image-side surface S10; and the sixth lens E6 has an object-side surface S11 and an image-side surface S12.
In this embodiment, the first lens E1 has a negative power; the second lens E2 has positive focal power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens E3 has positive optical power; the fourth lens E4 has negative focal power, and the object side surface S7 and the image side surface S8 of the fourth lens are concave surfaces; the fifth lens element E5 has positive focal power, and has a concave object-side surface S9 and a convex image-side surface S10; and the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12.
In the optical imaging system of the present embodiment, an aperture stop STO for limiting a light beam is further included, which is disposed between the second lens E2 and the third lens E3. The optical imaging system according to embodiment 2 may include a filter E7 having an object side surface S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
Table 4 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 2. Table 5 shows the high-order coefficient of each aspherical mirror surface in example 2. Table 6 shows effective focal lengths f1 to f6 of the respective lenses, an effective focal length f of the optical imaging lens, and a half ImgH of the diagonal length of the effective pixel area of the electro-optical element of the optical imaging lens in example 2. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
TABLE 4
TABLE 5
TABLE 6
| f1(mm) | -5.20 | f(mm) | 2.16 |
| f2(mm) | 6.01 | ImgH(mm) | 3.03 |
| f3(mm) | 1.80 | ||
| f4(mm) | -3.28 | ||
| f5(mm) | 2.09 | ||
| f6(mm) | -3.53 |
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents the distortion magnitude values in the case of different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging surface of light rays after passing through the optical imaging lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D.
Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application. As shown in fig. 5, the optical imaging lens according to embodiment 3 includes six lenses E1 to E6 arranged in order from the object side to the imaging side along the optical axis. The first lens E1 has an object side surface S1 and an image side surface S2; the second lens E2 has an object side surface S3 and an image side surface S4; the third lens E3 has an object-side surface S5 and an image-side surface S6; the fourth lens E4 has an object-side surface S7 and an image-side surface S8; the fifth lens E5 has an object-side surface S9 and an image-side surface S10; and the sixth lens E6 has an object-side surface S11 and an image-side surface S12.
In this embodiment, the first lens E1 has a negative power; the second lens E2 has positive focal power, and the object-side surface S3 is a convex surface, and the image-side surface S4 is a concave surface; the third lens E3 has positive refractive power; the fourth lens element E4 has a negative focal power, and has a concave object-side surface S7 and a concave image-side surface S8; the fifth lens element E5 has positive focal power, and has a concave object-side surface S9 and a convex image-side surface S10; and the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12.
In the optical imaging system of the present embodiment, an aperture stop STO for limiting a light beam is further included, which is disposed between the second lens E2 and the third lens E3. The optical imaging system according to embodiment 3 may include a filter E7 having an object side surface S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.
Table 7 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 3. Table 8 shows the high-order coefficient of each aspherical mirror surface in example 3. Table 9 shows effective focal lengths f1 to f6 of the respective lenses, an effective focal length f of the optical imaging lens, and a half ImgH of the diagonal length of the effective pixel area of the electro-optical element of the optical imaging lens in example 3. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
TABLE 7
TABLE 8
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 3.0368E-01 | -3.4703E-01 | 4.2309E-01 | -4.1178E-01 | 2.8721E-01 | -1.2850E-01 | 3.2322E-02 | -3.2877E-03 | 0 |
| S2 | 5.4275E-01 | -1.1094E+00 | 2.2905E+00 | -4.5645E+00 | 5.6654E+00 | -3.8610E+00 | 1.3192E+00 | -1.7199E-01 | 0 |
| S3 | 9.9893E-02 | -1.0358E+00 | 3.2203E+00 | -1.1256E+01 | 2.4728E+01 | -2.7032E+01 | 1.1515E+01 | 0 | 0 |
| S4 | 7.6366E-02 | -9.0036E-01 | 8.7815E+00 | -5.7116E+01 | 2.1838E+02 | -4.2323E+02 | 3.2616E+02 | 0 | 0 |
| S5 | -2.2162E-02 | -2.0832E-01 | 2.8634E+00 | -2.9855E+01 | 1.5982E+02 | -4.4276E+02 | 4.9260E+02 | 0 | 0 |
| S6 | 7.1169E-02 | -6.4052E-01 | 2.4024E+00 | -7.0967E+00 | 1.2670E+01 | -1.2739E+01 | 4.9193E+00 | 0 | 0 |
| S7 | -2.5135E-01 | -1.9726E-01 | 1.0585E+00 | -2.3067E+00 | 3.0580E+00 | -2.2352E+00 | 6.2703E-01 | 0 | 0 |
| S8 | -2.1548E-01 | 1.4230E-01 | -3.1693E-02 | -6.0695E-02 | 8.0897E-02 | -3.8856E-02 | 6.4338E-03 | 0 | 0 |
| S9 | 1.2651E-01 | -2.4669E-01 | 3.3327E-01 | -3.1098E-01 | 1.9617E-01 | -7.2284E-02 | 1.1402E-02 | -7.4274E-05 | 0 |
| S10 | 4.6200E-02 | -2.0412E-01 | 2.5209E-01 | -1.9446E-01 | 8.3684E-02 | -2.7305E-03 | -9.5597E-03 | 2.0885E-03 | 0 |
| S11 | -1.3210E-01 | -2.4654E-02 | 2.8020E-02 | -4.0727E-03 | -3.2775E-03 | 1.6862E-03 | -3.0105E-04 | 1.9236E-05 | 0 |
| S12 | -1.3130E-01 | 4.3366E-02 | -2.8393E-03 | -4.7696E-03 | 2.4715E-03 | -6.2917E-04 | 9.2196E-05 | -7.4292E-06 | 2.5711E-07 |
TABLE 9
| f1(mm) | -7.75 | f(mm) | 2.17 |
| f2(mm) | 16.18 | ImgH(mm) | 3.03 |
| f3(mm) | 2.00 | ||
| f4(mm) | -3.51 | ||
| f5(mm) | 1.91 | ||
| f6(mm) | -3.23 |
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents the distortion magnitude values in the case of different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. As can be seen from fig. 6A to 6D, the optical imaging lens system according to embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D.
Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application. As shown in fig. 7, the optical imaging lens according to embodiment 4 includes six lenses E1 to E6 arranged in order from the object side to the imaging side along the optical axis. The first lens E1 is provided with an object side surface S1 and an image side surface S2; the second lens E2 has an object side surface S3 and an image side surface S4; the third lens E3 has an object-side surface S5 and an image-side surface S6; the fourth lens E4 has an object-side surface S7 and an image-side surface S8; the fifth lens E5 has an object-side surface S9 and an image-side surface S10; and the sixth lens E6 has an object-side surface S11 and an image-side surface S12.
In this embodiment, the first lens E1 has a negative power; the second lens E2 has positive focal power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens E3 has positive optical power; the fourth lens E4 has negative focal power, and the object side surface S7 and the image side surface S8 of the fourth lens are concave surfaces; the fifth lens E5 has positive focal power, and the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface; and the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12.
In the optical imaging system of the present embodiment, an aperture stop STO for limiting a light beam is further included, which is disposed between the second lens E2 and the third lens E3. The optical imaging system according to embodiment 4 may include a filter E7 having an object side surface S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 10 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 4. Table 11 shows the high-order coefficient of each aspherical mirror surface in example 4. Table 12 shows effective focal lengths f1 to f6 of the respective lenses, effective focal length f of the optical imaging lens, and half ImgH of diagonal length of effective pixel area of the electro-optical element of the optical imaging lens in example 4. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 11
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 |
| S1 | 6.0505E-02 | 2.6013E-02 | -1.0979E-01 | 1.4842E-01 | -1.0889E-01 | 4.4927E-02 | -9.7099E-03 | 8.5733E-04 |
| S2 | 1.1718E-02 | 2.6547E-01 | -8.1390E-01 | 1.4418E+00 | -1.5396E+00 | 9.5467E-01 | -3.1301E-01 | 4.1748E-02 |
| S3 | 2.5229E-01 | -8.3768E-01 | 1.5793E+00 | -2.7875E+00 | 2.7825E+00 | -1.0796E+00 | 0.0000E+00 | |
| S4 | 1.0590E-01 | -2.1214E-01 | -4.6509E-01 | 1.6679E+00 | -8.6182E-01 | 0.0000E+00 | 0.0000E+00 | |
| S5 | -7.3990E-02 | -3.6175E-01 | 2.4446E+00 | -1.3962E+01 | 3.6243E+01 | -4.5335E+01 | 2.2821E+01 | |
| S6 | -3.5004E-01 | -1.1780E-01 | 6.2473E-01 | -1.1273E+00 | 2.9384E-01 | 0.0000E+00 | 0.0000E+00 | |
| S7 | -3.5948E-01 | 3.9327E-01 | -1.3898E+00 | 3.4970E+00 | -3.8511E+00 | 1.9112E+00 | -3.5228E-01 | |
| S8 | -2.0638E-01 | 2.7042E-01 | -4.4976E-01 | 5.6676E-01 | -4.3085E-01 | 1.8309E-01 | -3.2590E-02 | |
| S9 | 2.5711E-02 | -1.3846E-01 | 5.8966E-01 | -6.6991E-01 | 3.1709E-01 | -5.5653E-02 | -2.7310E-03 | 1.3965E-03 |
| S10 | 2.1349E-01 | -9.6303E-01 | 1.9075E+00 | -2.6241E+00 | 2.4903E+00 | -1.4242E+00 | 4.3330E-01 | -5.3942E-02 |
| S11 | -1.0102E-01 | -4.6763E-02 | 9.7718E-02 | -5.8088E-02 | 1.8407E-02 | -3.3223E-03 | 3.2146E-04 | -1.2949E-05 |
| S12 | -1.3286E-01 | 8.3355E-02 | -4.3681E-02 | 1.6585E-02 | -4.2296E-03 | 6.6384E-04 | -5.6929E-05 | 2.0254E-06 |
TABLE 12
| f1(mm) | -13.73 | f(mm) | 2.45 |
| f2(mm) | 5.83 | ImgH(mm) | 3.08 |
| f3(mm) | 2.79 | ||
| f4(mm) | -5.39 | ||
| f5(mm) | 1.44 | ||
| f6(mm) | -1.54 |
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents the distortion magnitude values in the case of different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging plane after light passes through the optical imaging lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D.
Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application. As shown in fig. 9, the optical imaging lens according to embodiment 5 includes six lenses E1 to E6 arranged in order from the object side to the imaging side along the optical axis. The first lens E1 has an object side surface S1 and an image side surface S2; the second lens E2 has an object side surface S3 and an image side surface S4; the third lens E3 has an object-side surface S5 and an image-side surface S6; the fourth lens E4 has an object-side surface S7 and an image-side surface S8; the fifth lens E5 has an object-side surface S9 and an image-side surface S10; and the sixth lens E6 has an object-side surface S11 and an image-side surface S12.
In this embodiment, the first lens E1 has a negative power; the second lens E2 has positive focal power, and the object-side surface S3 is a convex surface, and the image-side surface S4 is a concave surface; the third lens E3 has positive refractive power; the fourth lens E4 has negative focal power, and the object side surface S7 and the image side surface S8 of the fourth lens are concave surfaces; the fifth lens E5 has positive focal power, and the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface; and the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12.
In the optical imaging system of the present embodiment, an aperture stop STO for limiting a light beam is further included, which is disposed between the second lens E2 and the third lens E3. The optical imaging system according to embodiment 5 may include a filter E7 having an object side surface S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 13 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 5. Table 14 shows the high-order coefficient of each aspherical mirror surface in example 5. Table 15 shows effective focal lengths f1 to f6 of the respective lenses, effective focal length f of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel area of the electro-optical sensor of the optical imaging lens in example 5. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 13
TABLE 14
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 |
| S1 | 1.5716E-01 | -2.2979E-01 | 2.7912E-01 | -2.4730E-01 | 1.5022E-01 | -5.9073E-02 | 1.3552E-02 | -1.3658E-03 |
| S2 | 2.9534E-01 | -9.9653E-01 | 2.5150E+00 | -4.2969E+00 | 4.4583E+00 | -2.6455E+00 | 7.9112E-01 | -7.4412E-02 |
| S3 | 4.3819E-01 | -2.0016E+00 | 5.2346E+00 | -9.3033E+00 | 8.6061E+00 | -3.0395E+00 | 0.0000E+00 | |
| S4 | -5.8404E-03 | -1.4571E-01 | 9.4316E-01 | -3.0108E+00 | 3.5649E+00 | 0.0000E+00 | 0.0000E+00 | |
| S5 | -4.6300E-02 | 3.2309E-01 | -6.0267E+00 | 5.0179E+01 | -2.3592E+02 | 5.5222E+02 | -5.1970E+02 | |
| S6 | -2.7274E-01 | -5.3911E-02 | -8.5559E-01 | 3.0252E+00 | -4.4498E+00 | 0.0000E+00 | 0.0000E+00 | |
| S7 | -2.2328E-01 | -3.8615E-01 | 8.5058E-01 | -5.0139E+00 | 1.4680E+01 | -1.8196E+01 | 7.8529E+00 | |
| S8 | -3.0146E-02 | -1.3959E-01 | 2.0750E-01 | -2.4990E-01 | 2.3380E-01 | -1.5113E-01 | 4.5991E-02 | |
| S9 | 2.5149E-01 | -4.1045E-01 | 1.5821E+00 | -2.1618E+00 | 6.3923E-01 | 1.1123E+00 | -1.0757E+00 | 2.8698E-01 |
| S10 | 1.5914E-01 | -8.5599E-01 | 1.7789E+00 | -2.4580E+00 | 2.2265E+00 | -1.1703E+00 | 3.1768E-01 | -3.4198E-02 |
| S11 | -2.6320E-02 | -8.4891E-02 | 8.0136E-02 | -3.7102E-02 | 1.0125E-02 | -1.6258E-03 | 1.4189E-04 | -5.2026E-06 |
| S12 | -6.7716E-02 | 5.9741E-03 | 8.7447E-03 | -5.4614E-03 | 1.5793E-03 | -2.6086E-04 | 2.3578E-05 | -8.9596E-07 |
Watch 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the optical imaging lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents the distortion magnitude values in the case of different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface of light rays after passing through the optical imaging lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
In conclusion, examples 1 to 5 each satisfy the relationship shown in table 16 below.
TABLE 16
| Conditions/examples | 1 | 2 | 3 | 4 | 5 |
| f*tan(HFOV)/TTL | 0.88 | 0.81 | 0.71 | 0.86 | 0.92 |
| f5/f23 | 0.57 | -0.05 | -0.13 | 0.15 | 0.15 |
| T12/T23 | 0.57 | 1.39 | 1.03 | 0.17 | 0.20 |
| (V1+V2+V3)/3 | 56.10 | 45.27 | 45.27 | 56.10 | 56.10 |
| |f/f1|+|f/f4|+|f/f6| | 1.43 | 1.69 | 1.57 | 2.22 | 2.01 |
| |f/R5| | 0.34 | 0.07 | 0.01 | 0.08 | 0.05 |
| R3/R6 | -1.13 | -1.93 | -1.98 | -0.88 | -0.78 |
| |(R9-R10)/(R9+R10)| | -0.03 | -0.11 | -0.41 | -0.18 | -0.08 |
| CT3/(CT1+CT2) | 0.48 | 1.36 | 1.41 | 0.94 | 0.70 |
| CT5/(CT4+CT6) | 0.91 | 1.42 | 1.74 | 1.60 | 1.58 |
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (12)
1. The optical imaging lens sequentially comprises from an object side to an image side along an optical axis:
a first lens having a negative optical power;
a second lens having a positive optical power;
a third lens having a positive optical power;
a fourth lens having a negative refractive power, an object-side surface of which is concave;
a fifth lens having a positive optical power; and
a sixth lens element with negative refractive power having a convex object-side surface and a concave image-side surface,
wherein an effective focal length f5 of the fifth lens and a combined focal length f23 of the second lens and the third lens satisfy: the f5/f23 is less than or equal to 0.6;
the effective focal length f of the optical imaging lens and the curvature radius R5 of the object side surface of the third lens meet the following condition: f/| R5| <0.5;
at least one of the first lens to the sixth lens is an aspherical lens; and
the number of lenses having optical power of the optical imaging lens is six.
2. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens, a half of a maximum field angle HFOV of the optical imaging lens, and a distance TTL on the optical axis from an object side surface of the first lens to an imaging surface satisfy: 0.7 ≤ f tan (HFOV)/TTL <1.0.
3. The optical imaging lens according to claim 1, characterized in that an air interval T12 of the first lens and the second lens on the optical axis and an air interval T23 of the second lens and the third lens on the optical axis satisfy: T12/T23<1.5.
4. An optical imaging lens according to any one of claims 1 to 3, wherein the abbe number V1 of the first lens, the abbe number V2 of the second lens and the abbe number V3 of the third lens satisfy: 40< (V1 + V2+ V3)/3 < -60.
5. The optical imaging lens according to any one of claims 1 to 3, wherein an effective focal length f of the optical imaging lens, an effective focal length f1 of the first lens, an effective focal length f4 of the fourth lens, and an effective focal length f6 of the sixth lens satisfy: 1.0< | f/f1| + | f/f4| + | f/f6| <2.50.
6. The optical imaging lens according to any one of claims 1 to 3, characterized in that a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R6 of an image-side surface of the third lens satisfy: -2.0< -R3/R6 < -0.5.
7. The optical imaging lens according to any one of claims 1 to 3, characterized in that a radius of curvature R9 of an object side surface of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy: l (R9-R10)/(R9 + R10) | <0.5.
8. Optical imaging lens according to any one of claims 1 to 3, characterized in that the central thickness CT1 of the first lens, the central thickness CT2 of the second lens and the central thickness CT3 of the third lens are such that: CT 3/(CT 1+ CT 2) <1.5.
9. The optical imaging lens according to any one of claims 1 to 3, characterized in that the central thickness CT4 of the fourth lens, the central thickness CT5 of the fifth lens and the central thickness CT6 of the sixth lens satisfy: 0.5-straw CT5/(CT 4+ CT 6) <2.0.
10. The optical imaging lens of any one of claims 1 to 3, wherein the second lens element has a convex object-side surface and a concave image-side surface.
11. The optical imaging lens of any one of claims 1 to 3, wherein the image side surface of the fourth lens is concave.
12. The optical imaging lens of any one of claims 1 to 3, wherein the fifth lens element has a concave object-side surface and a convex image-side surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810414619.5A CN108375825B (en) | 2018-05-03 | 2018-05-03 | Optical imaging lens |
| PCT/CN2019/077753 WO2019210740A1 (en) | 2018-05-03 | 2019-03-12 | Optical imaging lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810414619.5A CN108375825B (en) | 2018-05-03 | 2018-05-03 | Optical imaging lens |
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| Publication Number | Publication Date |
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| CN108375825A CN108375825A (en) | 2018-08-07 |
| CN108375825B true CN108375825B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810414619.5A Active CN108375825B (en) | 2018-05-03 | 2018-05-03 | Optical imaging lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108375825B (en) |
| WO (1) | WO2019210740A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375825B (en) * | 2018-05-03 | 2023-03-31 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN109445064B (en) * | 2018-09-28 | 2023-03-28 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN109541785A (en) * | 2019-01-22 | 2019-03-29 | 浙江舜宇光学有限公司 | Optical lens group |
| JP6738470B1 (en) * | 2019-08-07 | 2020-08-12 | エーエーシー コミュニケーション テクノロジーズ（ジョウシュウ）カンパニーリミテッド | Imaging lens |
| CN111007649B (en) * | 2019-12-27 | 2021-09-24 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
| CN111025597B (en) * | 2019-12-30 | 2021-10-29 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
| WO2021134330A1 (en) * | 2019-12-30 | 2021-07-08 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN113311563B (en) * | 2020-02-27 | 2024-02-06 | 中强光电股份有限公司 | Optical lens |
| CN112230382B (en) * | 2020-10-31 | 2022-04-29 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| TWI768998B (en) | 2021-06-21 | 2022-06-21 | 大立光電股份有限公司 | Optical imaging system, image capturing unit and electronic device |
| CN113805309B (en) * | 2021-09-08 | 2023-07-04 | 江西晶超光学有限公司 | Optical system, image capturing module and electronic equipment |
| CN114167583B (en) * | 2021-11-24 | 2023-08-08 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| CN114114650B (en) * | 2022-01-27 | 2022-07-22 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1138320A (en) * | 1997-07-22 | 1999-02-12 | Asahi Optical Co Ltd | Zoom lens system |
| TWI451123B (en) * | 2012-10-30 | 2014-09-01 | Largan Precision Co Ltd | Optical photographing lens system |
| KR101719880B1 (en) * | 2014-12-19 | 2017-03-24 | 삼성전기주식회사 | Lens module |
| CN106019535B (en) * | 2016-07-12 | 2017-11-14 | 浙江舜宇光学有限公司 | Pick-up lens |
| CN106526801B (en) * | 2016-12-05 | 2019-01-08 | 浙江舜宇光学有限公司 | Pick-up lens and photographic device |
| CN107065126A (en) * | 2016-12-23 | 2017-08-18 | 捷西迪（广州）光学科技有限公司 | A kind of lens devices |
| CN208737088U (en) * | 2018-05-03 | 2019-04-12 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN108375825B (en) * | 2018-05-03 | 2023-03-31 | 浙江舜宇光学有限公司 | Optical imaging lens |
-
2018
- 2018-05-03 CN CN201810414619.5A patent/CN108375825B/en active Active
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| WO2019210740A1 (en) | 2019-11-07 |
| CN108375825A (en) | 2018-08-07 |
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