CN112965222B - Optical lens - Google Patents
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- CN112965222B CN112965222B CN202110537316.4A CN202110537316A CN112965222B CN 112965222 B CN112965222 B CN 112965222B CN 202110537316 A CN202110537316 A CN 202110537316A CN 112965222 B CN112965222 B CN 112965222B
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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
- G02B13/18—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 invention provides an optical lens, comprising the following components in sequence from an object side to an imaging surface: a diaphragm; the first lens is a plastic aspheric lens with positive focal power, and the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens is a plastic non-spherical lens with negative focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a concave surface; the third lens is a plastic aspheric lens with positive focal power, and the object side surface of the third lens is a convex surface and the image side surface of the third lens is a concave surface; the fourth lens is a plastic aspheric lens with negative focal power, and the object side surface of the fourth lens is a concave surface and the image side surface of the fourth lens is a convex surface; the fifth lens is a plastic aspheric lens with positive focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens element has a negative-power aspheric plastic lens with a concave object-side surface at the paraxial region and a concave image-side surface at the paraxial region. The optical lens disclosed by the invention has the characteristics of ultrahigh pixels, large aperture and ultrathin thickness.
Description
Technical Field
The invention relates to the technical field of lens imaging, in particular to an optical lens.
Background
At present, along with the popularization of portable electronic devices (such as smart phones, tablets and cameras), and the popularity of social, video and live broadcast software, people have higher and higher liking degree for photography, camera lenses have become standard fittings of the electronic devices, and even the camera lenses have become indexes which are considered for the first time when consumers purchase the electronic devices.
With the development of mobile information technology, portable electronic devices such as mobile phones are also being developed towards ultra-thin, ultra-high definition, and day and night with the same image quality, and particularly, a camera that needs to have a large aperture characteristic for close-up of portrait, still portrait, macro photography, and starry sky photography is a more important point when buying mobile phones. The lightness, thinness and high pixel are more important selling points for the updating of mobile phones, so that the optical lens has the characteristics of large aperture, ultra-high pixel, lightness, thinness and the like, which is the key research direction of technicians in the field.
Disclosure of Invention
In view of the above problems, the present invention provides an optical lens having ultra-high pixels, a large aperture and ultra-thin thickness.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an optical lens comprising, in order from an object side to an image plane along an optical axis:
a diaphragm;
the first lens with positive focal power has a convex object-side surface and a concave image-side surface;
the second lens with negative focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface;
a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;
the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface;
the image side surface of the fifth lens is a convex surface;
a sixth lens element with negative optical power, having a concave object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
the optical lens satisfies the following conditional expression:
0.7≤f5/f≤1.68；
where f5 denotes an effective focal length of the fifth lens, and f denotes an effective focal length of the optical lens.
Compared with the prior art, the invention has the beneficial effects that: the optical lens provided by the invention adopts six lenses with specific refractive power, and adopts specific surface shape collocation and reasonable focal power distribution, so that the structure is more compact while high pixel is met, the miniaturization of the lens and the balance of high pixels are better realized, simultaneously, scenes with larger areas can be shot, great convenience is brought to later cutting, in addition, the optical lens enhances the depth and space sense of an imaging picture, and has better imaging quality.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an optical lens system according to a first embodiment of the present invention;
FIG. 2 is a field curvature graph of an optical lens according to a first embodiment of the present invention;
FIG. 3 is a diagram illustrating a distortion curve of an optical lens according to a first embodiment of the present invention;
FIG. 4 is a graph of on-axis spherical aberration of an optical lens according to a first embodiment of the present invention;
FIG. 5 is a lateral chromatic aberration diagram of an optical lens according to a first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an optical lens system according to a second embodiment of the present invention;
FIG. 7 is a field curvature graph of an optical lens according to a second embodiment of the present invention;
FIG. 8 is a distortion graph of an optical lens in a second embodiment of the present invention;
FIG. 9 is a graph of on-axis spherical aberration of an optical lens according to a second embodiment of the present invention;
FIG. 10 is a lateral chromatic aberration diagram of an optical lens according to a second embodiment of the present invention;
FIG. 11 is a schematic structural diagram of an optical lens assembly according to a third embodiment of the present invention;
FIG. 12 is a field curvature graph of an optical lens according to a third embodiment of the present invention;
fig. 13 is a distortion graph of an optical lens in a third embodiment of the present invention;
FIG. 14 is a graph of on-axis spherical aberration of an optical lens according to a third embodiment of the present invention;
FIG. 15 is a lateral chromatic aberration diagram of an optical lens according to a third embodiment of the present invention;
FIG. 16 is a schematic structural diagram of an optical lens system according to a fourth embodiment of the present invention;
fig. 17 is a field curvature graph of an optical lens in a fourth embodiment of the present invention;
fig. 18 is a distortion graph of an optical lens in a fourth embodiment of the present invention;
FIG. 19 is a graph showing an on-axis spherical aberration of an optical lens according to a fourth embodiment of the present invention;
fig. 20 is a lateral chromatic aberration diagram of an optical lens in a fourth embodiment of the present invention.
The figure elements symbolize:
| first lens | L1 | Second lens | L2 |
| Third lens | L3 | Fourth lens | L4 |
| Fifth lens element | L5 | Sixth lens element | L6 |
| Infrared filter | G1 | Diaphragm | ST |
| Object side surface of the first lens | S1 | Image side surface of the first lens | S2 |
| Object side surface of the second lens | S3 | Image side surface of the second lens | S4 |
| Object side of the third lens | S5 | Image side surface of the third lens | S6 |
| Object side of the fourth lens | S7 | Image side surface of the fourth lens | S8 |
| Object side surface of fifth lens | S9 | Image side surface of the fifth lens element | S10 |
| Object side surface of sixth lens | S11 | Image side surface of sixth lens element | S12 |
| Object side of infrared filter | S13 | Object side of infrared filter | S14 |
| Image plane | S15 |
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and not for purposes of indicating or implying that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides an optical lens, which sequentially comprises the following components from an object side to an imaging surface along an optical axis: a diaphragm; the first lens with positive focal power has a convex object-side surface and a concave image-side surface; the second lens with negative focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface; the image side surface of the fifth lens is a convex surface; a sixth lens element with negative optical power, having a concave object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
in some embodiments, the optical lens satisfies the following conditional expression:
0.7≤f5/f≤1.68；
where f5 denotes an effective focal length of the fifth lens, and f denotes an effective focal length of the optical lens. The condition formula is satisfied, and the correction of chromatic aberration and the improvement of lens resolution are facilitated.
In some embodiments, the optical lens satisfies the following conditional expression:
3.567≤f3/f≤20；
where f3 denotes an effective focal length of the third lens, and f denotes an effective focal length of the optical lens. The condition is satisfied, the light rays are turned and diffused, and the function of increasing the image height of the system is achieved.
In some embodiments, the optical lens satisfies the following conditional expression:
-20≤(R5+R6)/(R5-R6)≤-3.56；
wherein R5 represents a radius of curvature of the object-side surface of the third lens and R6 represents a radius of curvature of the image-side surface of the third lens. The condition formula is satisfied, the surface sensitivity of the third lens is insensitive, the qualification rate of products is improved, and the cost is reduced.
In some embodiments, the optical lens satisfies the following conditional expression:
0.818≤f1/f≤1.039；
where f1 denotes an effective focal length of the first lens, and f denotes an effective focal length of the optical lens. The first lens has larger positive focal power and is beneficial to shortening the total length of the lens.
In some embodiments, the optical lens satisfies the following conditional expression:
-847≤f4/f≤-6；
wherein f4 represents an effective focal length of the fourth lens, and f represents an effective focal length of the optical lens. Satisfying the above conditional expressions, the curvature of field of the optical lens can be corrected, the resolution is improved, and the brightness of the peripheral field of view is improved.
In some embodiments, the optical lens satisfies the following conditional expression:
-161≤(R7+R8)/(R7-R8)≤-1；
wherein R7 represents a radius of curvature of the object-side surface of the fourth lens and R8 represents a radius of curvature of the image-side surface of the fourth lens. Satisfy above-mentioned conditional expression, distribution focal power, shape that can be reasonable to correct the coma of system, promote the imaging quality of camera lens.
In some embodiments, the optical lens satisfies the following conditional expression:
0.668≤(R9+R10)/(R9-R10)≤3.786；
wherein R9 represents a radius of curvature of the object-side surface of the fifth lens, and R10 represents a radius of curvature of the image-side surface of the fifth lens. The condition formula is satisfied, so that the whole fifth lens has low sensitivity to eccentricity and high yield of products.
In some embodiments, the optical lens satisfies the following conditional expression:
0.13≤BFL/TTL≤0.156；
wherein BFL represents the optical back focus of the system and TTL represents the total length of the system. Satisfying the above conditional expressions, the lens can be made to match the CRA of the chip and be miniaturized.
In some embodiments, the optical lens satisfies the following conditional expression:
1.129≤TTL/IMH≤1.31；
wherein, TTL represents the total length of the optical lens, and IMH represents the maximum half-image height of the optical lens. The lens can have the characteristics of ultrahigh pixel and miniaturization by meeting the conditional expression.
In some embodiments, the optical lens satisfies the following conditional expression:
-1.925≤SAG9/CT5≤-0.47；
wherein SAG9 represents the sagittal height of the object side surface of the fifth lens of the system and CT5 represents the center thickness of the fifth lens. The condition formula is satisfied, the surface type and the eccentric sensitivity of the fifth lens are not sensitive, the yield of products is improved, and the cost is reduced.
In some embodiments, the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element are plastic aspheric lens elements, and the aspheric lens elements are adopted in each lens element, which has at least the following three advantages:
1. the lens has better imaging quality;
2. the structure of the lens is more compact;
3. the total optical length of the lens is shorter.
The surface shape of the aspheric lens in each embodiment of the invention satisfies the following equation:
wherein z is the distance rise from the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction, c is the paraxial curvature radius of the surface, k is the quadric coefficient, A2iIs the aspheric surface type coefficient of 2i order.
In the following embodiments, the thickness, the curvature radius, and the material selection of each lens in the optical lens are different, and specific differences can be referred to in the parameter tables of the embodiments.
First embodiment
Referring to fig. 1, an optical lens assembly according to a first embodiment of the present invention includes, in order from an object side to an image plane along an optical axis: the stop ST, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the infrared filter G1.
The first lens element L1 is a plastic aspheric lens with positive power, the object-side surface S1 of the first lens element is convex, and the image-side surface S2 of the first lens element is concave;
the second lens element L2 is a plastic aspheric lens with negative power, the object-side surface S3 of the second lens element is concave, and the image-side surface S4 of the second lens element is concave;
the third lens element L3 is a plastic aspheric lens with positive power, the object-side surface S5 of the third lens element is convex, and the image-side surface S6 of the third lens element is concave;
the fourth lens element L4 is a plastic aspheric lens with negative power, the object-side surface S7 of the fourth lens element is concave, and the image-side surface S8 of the fourth lens element is convex;
the fifth lens element L5 is a plastic aspheric lens with positive power, the fifth lens element having a concave object-side surface S9 at the paraxial region and a convex image-side surface S10 at the paraxial region;
the sixth lens element L6 is a plastic aspheric lens with negative power, the sixth lens element having a concave object-side surface S11 at the paraxial region and a concave image-side surface S12 at the paraxial region;
in some embodiments, 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 glass lenses, or may be a combination of plastic lenses and glass lenses.
The relevant parameters of each lens in the optical lens provided by the embodiment are shown in table 1, where R represents a curvature radius, d represents an optical surface distance, and n representsdD-line refractive index, V, of the materialdRepresents the abbe number of the material.
TABLE 1
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 2.
TABLE 2
In the present embodiment, graphs of curvature of field, distortion, on-axis chromatic aberration of point and lateral chromatic aberration of the optical lens are shown in fig. 2, 3, 4 and 5, respectively, and as can be seen from fig. 2 to 5, curvature of field, distortion and chromatic aberration are well corrected.
Second embodiment
Referring to fig. 6, a schematic structural diagram of an optical lens according to the present embodiment includes, in order from an object side to an image plane along an optical axis: the stop ST, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the infrared filter G1.
The first lens element L1 is a plastic aspheric lens with positive power, the object-side surface S1 of the first lens element is convex, and the image-side surface S2 of the first lens element is concave;
the second lens element L2 is a plastic aspheric lens with negative power, the object-side surface S3 of the second lens element is concave, and the image-side surface S4 of the second lens element is concave;
the third lens element L3 is a plastic aspheric lens with positive power, the object-side surface S5 of the third lens element is convex, and the image-side surface S6 of the third lens element is concave;
the fourth lens element L4 is a plastic aspheric lens with negative power, the object-side surface S7 of the fourth lens element is concave, and the image-side surface S8 of the fourth lens element is convex;
the fifth lens element L5 is a plastic aspheric lens with positive power, the fifth lens element having a concave object-side surface S9 at the paraxial region and a convex image-side surface S10 at the paraxial region;
the sixth lens element L6 is a plastic aspheric lens with negative power, the sixth lens element having a concave object-side surface S11 at the paraxial region and a concave image-side surface S12 at the paraxial region;
the present embodiment provides the relevant parameters of each lens in the optical lens as shown in table 3.
TABLE 3
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 4.
TABLE 4
In the present embodiment, graphs of curvature of field, distortion, on-axis chromatic aberration of point and lateral chromatic aberration of the optical lens are shown in fig. 7, 8, 9 and 10, respectively, and as can be seen from fig. 7 to 10, the curvature of field, distortion and chromatic aberration of the optical lens are well corrected.
Third embodiment
Referring to fig. 11, a schematic structural diagram of an optical lens according to the present embodiment includes, in order from an object side to an image plane along an optical axis: the stop ST, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the infrared filter G1.
The first lens element L1 is a plastic aspheric lens with positive power, the object-side surface S1 of the first lens element is convex, and the image-side surface S2 of the first lens element is concave;
the second lens element L2 is a plastic aspheric lens with negative power, the object-side surface S3 of the second lens element is concave, and the image-side surface S4 of the second lens element is concave;
the third lens element L3 is a plastic aspheric lens with positive power, the object-side surface S5 of the third lens element is convex, and the image-side surface S6 of the third lens element is concave;
the fourth lens element L4 is a plastic aspheric lens with negative power, the object-side surface S7 of the fourth lens element is concave, and the image-side surface S8 of the fourth lens element is convex;
the fifth lens element L5 is a plastic aspheric lens with positive power, with the object-side surface S9 of the fifth lens element being convex at the paraxial region and the image-side surface S10 of the fifth lens element being convex at the paraxial region;
the sixth lens element L6 is a plastic aspheric lens with negative power, the sixth lens element having a concave object-side surface S11 at the paraxial region and a concave image-side surface S12 at the paraxial region;
the relevant parameters of each lens in the optical lens provided by the present embodiment are shown in table 5.
TABLE 5
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 6.
TABLE 6
In the present embodiment, graphs of curvature of field, distortion, on-axis spherical aberration, and lateral chromatic aberration of the optical lens are shown in fig. 12, 13, 14, and 15, respectively, and as can be seen from fig. 12 to 15, the curvature of field, distortion, and chromatic aberration of the optical lens are well corrected.
Fourth embodiment
Referring to fig. 16, a schematic structural diagram of an optical lens according to the present embodiment includes, in order from an object side to an image plane along an optical axis: the stop ST, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the infrared filter G1.
The first lens element L1 is a plastic aspheric lens with positive power, the object-side surface S1 of the first lens element is convex, and the image-side surface S2 of the first lens element is concave;
the second lens element L2 is a plastic aspheric lens with negative power, the object-side surface S3 of the second lens element is concave, and the image-side surface S4 of the second lens element is concave;
the third lens element L3 is a plastic aspheric lens with positive power, the object-side surface S5 of the third lens element is convex, and the image-side surface S6 of the third lens element is concave;
the fourth lens element L4 is a plastic aspheric lens with negative power, the object-side surface S7 of the fourth lens element is concave, and the image-side surface S8 of the fourth lens element is convex;
the fifth lens element L5 is a plastic aspheric lens with positive power, the fifth lens element having a concave object-side surface S9 at the paraxial region and a convex image-side surface S10 at the paraxial region;
the sixth lens element L6 is a plastic aspheric lens with negative power, the sixth lens element having a concave object-side surface S11 at the paraxial region and a concave image-side surface S12 at the paraxial region;
the relevant parameters of each lens in the optical lens in this embodiment are shown in table 7.
TABLE 7
The surface shape coefficients of the aspherical surfaces of the optical lens in this embodiment are shown in table 8.
TABLE 8
In the present embodiment, graphs of curvature of field, distortion, on-axis chromatic aberration of point and lateral chromatic aberration of the optical lens are shown in fig. 17, 18, 19 and 20, respectively, and as can be seen from fig. 17 to 20, the curvature of field, distortion and chromatic aberration of the optical lens are well corrected.
Table 9 shows the optical characteristics corresponding to the above four embodiments, which mainly include the focal length F of the optical lens, F #, total optical length TTL, and the field angle 2 θ, and the values corresponding to each conditional expression.
TABLE 9
In summary, the optical lens provided in this embodiment has at least the following advantages:
(1) the six lenses with specific refractive power are adopted, and the specific surface shapes and the matching of the surface shapes are adopted, so that the structure is more compact while the wide visual angle is met, and the miniaturization of the lens and the balance of ultra-high definition and wide visual angle are better realized.
(2) In addition, the optical lens with the design enhances the acquisition of object details, can perfectly extract the special effect of background blurring, and has better imaging quality.
The optical lens in the above embodiments can be applied to terminal devices such as mobile phones, tablets, cameras, and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An optical lens, comprising, in order from an object side to an image plane along an optical axis:
a diaphragm;
the first lens with positive focal power has a convex object-side surface and a concave image-side surface;
the second lens with negative focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface;
a third lens with positive focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;
the fourth lens with negative focal power has a concave object-side surface and a convex image-side surface;
the image side surface of the fifth lens is a convex surface;
a sixth lens element with negative optical power, having a concave object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
the optical lens satisfies the following conditional expression:
0.7≤f5/f≤1.68；
wherein f5 denotes an effective focal length of the fifth lens, and f denotes an effective focal length of the optical lens;
3.567≤f3/f≤20；
where f3 denotes an effective focal length of the third lens, and f denotes an effective focal length of the optical lens.
2. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
-20≤(R5+R6)/(R5-R6)≤-3.56；
wherein R5 represents a radius of curvature of the object-side surface of the third lens and R6 represents a radius of curvature of the image-side surface of the third lens;
0.818≤f1/f≤1.039；
where f1 denotes an effective focal length of the first lens, and f denotes an effective focal length of the optical lens.
3. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
-847≤f4/f≤-6；
where f4 denotes an effective focal length of the fourth lens, and f denotes an effective focal length of the optical lens.
4. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
-161≤(R7+R8)/(R7-R8)≤-1；
wherein R7 represents a radius of curvature of the object-side surface of the fourth lens and R8 represents a radius of curvature of the image-side surface of the fourth lens.
5. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
0.668≤(R9+R10)/(R9-R10)≤3.786；
wherein R9 represents a radius of curvature of the object-side surface of the fifth lens, and R10 represents a radius of curvature of the image-side surface of the fifth lens.
6. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
0.13≤BFL/TTL≤0.156；
wherein BFL represents an optical back focus of the optical lens, and TTL represents a total length of the optical lens.
7. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
1.129≤TTL/IMH≤1.31；
wherein, TTL represents the total length of the optical lens, and IMH represents the maximum half-image height of the optical lens.
8. An optical lens according to claim 1, characterized in that the optical lens satisfies the following conditional expression:
-1.925≤SAG9/CT5≤-0.47；
wherein SAG9 represents the sagittal height of the object-side surface of the fifth lens and CT5 represents the center thickness of the fifth lens.
9. An optical lens barrel according to any one of claims 1 to 8, wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are plastic aspherical lenses.
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| CN113625433B (en) * | 2021-09-18 | 2023-10-31 | 浙江舜宇光学有限公司 | Optical imaging lens |
Citations (2)
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| CN105204138A (en) * | 2015-09-08 | 2015-12-30 | 浙江舜宇光学有限公司 | Photographing lens |
| CN110471167A (en) * | 2019-08-16 | 2019-11-19 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
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| JP2012155223A (en) * | 2011-01-27 | 2012-08-16 | Tamron Co Ltd | Wide-angle single-focus lens |
| TWI504924B (en) * | 2013-09-25 | 2015-10-21 | Largan Precision Co Ltd | Photographing lens assembly and image capturing device |
| KR101709834B1 (en) * | 2014-10-30 | 2017-02-23 | 삼성전기주식회사 | Lens module |
| CN108303785B (en) * | 2018-04-03 | 2024-02-20 | 江西联益光学有限公司 | Miniature pick-up lens |
| CN109270666B (en) * | 2018-12-04 | 2021-02-05 | 广东旭业光电科技股份有限公司 | Optical imaging lens and electronic equipment |
| CN110646924B (en) * | 2019-11-12 | 2020-05-12 | 江西联益光学有限公司 | Optical lens |
| CN111338060B (en) * | 2020-05-21 | 2020-08-18 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
| CN112230400B (en) * | 2020-12-14 | 2021-03-02 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
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| CN105204138A (en) * | 2015-09-08 | 2015-12-30 | 浙江舜宇光学有限公司 | Photographing lens |
| CN110471167A (en) * | 2019-08-16 | 2019-11-19 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
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| CN112965222A (en) | 2021-06-15 |
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