CN113741006B - Optical lens, camera module and electronic equipment - Google Patents
Optical lens, camera module and electronic equipment Download PDFInfo
- Publication number
- CN113741006B CN113741006B CN202110972831.5A CN202110972831A CN113741006B CN 113741006 B CN113741006 B CN 113741006B CN 202110972831 A CN202110972831 A CN 202110972831A CN 113741006 B CN113741006 B CN 113741006B
- Authority
- CN
- China
- Prior art keywords
- lens
- optical lens
- optical
- lens element
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
Abstract
An optical lens system, an image capturing module and an electronic device, wherein the optical lens system includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element arranged in order from an object side to an image side along an optical axis, the first lens element has positive refractive power, the object side surface of the first lens element is convex at a paraxial region, the second lens element has negative refractive power, the object side surface and the image side surface of the second lens element are concave at a paraxial region, the third lens element has positive refractive power, the object side surface of the third lens element is convex at a paraxial region, the fourth lens element has refractive power, the image side surface of the fourth lens element is concave at a paraxial region, the fifth lens element has negative refractive power, the object side surface and the image side surface of the sixth lens element are convex and concave at a paraxial region, respectively, and the optical lens element satisfies the following relationships: 7.5mm < TTL/tan (HFOV) <11mm. The optical lens, the camera module and the electronic equipment can realize the miniaturization design of the camera module, thereby meeting the design requirement of the electronic equipment on high screen occupation ratio.
Description
Technical Field
The present invention relates to the field of optical imaging technologies, and in particular, to an optical lens, a camera module, and an electronic device.
Background
With the development of image capturing technology, more and more electronic devices place an image capturing module under a display screen to realize the design of an image capturing function under the screen, and for the electronic devices with the image capturing function under the screen, the size of the image capturing module influences the opening size of the display screen, so as to influence the screen occupation ratio of the electronic devices. Therefore, how to realize the miniaturization design of the camera module to reduce the screen occupation ratio of the electronic device is a problem to be solved.
Disclosure of Invention
The embodiment of the invention discloses an optical lens, a camera module and electronic equipment, which can realize the miniaturization design of the camera module, thereby meeting the design requirement of the electronic equipment on high screen occupation ratio.
In order to achieve the above object, the present invention discloses, in a first aspect, an optical lens including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side to an image side along an optical axis;
the first lens element with positive refractive power has a convex object-side surface at a paraxial region;
the second lens element with negative refractive power has a concave object-side surface and a concave image-side surface at a paraxial region;
The third lens element with positive refractive power has a convex object-side surface at a paraxial region;
the fourth lens element with refractive power has a concave image-side surface at a paraxial region;
the fifth lens element with refractive power;
the sixth lens element with negative refractive power has a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
the optical lens satisfies the following relation:
7.5mm<TTL/tan(HFOV)<11mm；
wherein TTL is the distance from the object side surface of the first lens to the imaging surface of the optical lens on the optical axis (i.e. the total length of the optical lens), and tan (HFOV) is the tangent of half of the maximum field angle of the optical lens.
According to the optical lens provided by the application, the first lens and the second lens respectively have positive refractive power and negative refractive power, so that light rays in a small angle can be stably converged into the optical lens. Meanwhile, the object side surface of the first lens element is convex at a paraxial region, which is conducive to enhancing the refractive power of the first lens element and improving the capability of the first lens element to converge light rays. The object side surface and the image side surface of the second lens are concave surface-shaped at the paraxial region, so that the head size of the optical lens can be reduced, and the miniaturization of the optical lens is realized; the third lens element with positive refractive power and the plane-type design with the object side surface being convex at the paraxial region thereof are matched, so that when incident light passes through the third lens element, the central and marginal view field light rays are effectively converged to correct marginal aberration, the resolving power of the optical lens is improved, the imaging quality of the optical lens is further improved, and meanwhile, the total length of the optical lens can be compressed to realize miniaturization of the optical lens. The concave design of the image side surface of the fourth lens at the paraxial region can optimize the aberration correction capability of the optical lens, and is beneficial to improving the imaging quality of the optical lens. The object side surface and the image side surface of the sixth lens are respectively provided with a convex surface and a concave surface at a paraxial region, so that on one hand, the emergence angle of light can be controlled, the sensitivity of the optical lens is reduced, and on the other hand, the back focus of the optical lens can be controlled, so that the optical lens has a sufficient focusing range and cannot be excessively compressed, and further, the optical lens can be better matched with a chip. The sixth lens element provides negative refractive power for the optical lens element, which is beneficial to balancing the aberration of the incident light beam, which is difficult to correct, generated from the first lens element to the fifth lens element, thereby improving the imaging quality of the optical lens element.
Further, by making the optical lens satisfy the following relation: 7.5mm < TTL/tan (HFOV) <11mm. The wide-angle characteristic can be realized while reducing the total length of the optical lens.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.2< CT1/IMGH <0.4;
CT1 is the thickness of the first lens on the optical axis, and IMGH is the radius of the maximum effective imaging circle of the optical lens.
When the optical lens meets the above relation, the optical lens can meet the requirements of high pixels and good image quality, and meanwhile, the optical lens is provided with a thicker first lens, so that the mechanical bearing position of the first lens can be fully moved towards the image side direction, the embedding depth of the optical lens is deepened, the diameter of the head of the optical lens is reduced, and the appearance structure of the optical lens is optimized.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.7< |SAG62|/CT6<1.8;
SAG62 is the sagittal height at the maximum effective radius of the image-side surface of the sixth lens, and CT6 is the thickness of the sixth lens on the optical axis.
When the optical lens meets the above relation, the shape of the sixth lens can be well controlled, thereby facilitating the manufacture and molding of the sixth lens and reducing the defect of poor molding. Meanwhile, the field curvature generated by each lens in the object side can be trimmed, so that the balance of the field curvature of the optical lens is ensured, namely, the field curvature sizes of different view fields tend to be balanced, thereby ensuring that the image quality of the whole optical lens picture is uniform and improving the imaging quality of the optical lens. When the optical lens is lower than the lower limit of the above relation, the surface shape of the object side surface of the sixth lens element at the circumference is too smooth, and the off-axis field of view light is not sufficiently deflected, which is not beneficial to the correction of distortion and curvature of field, while when the optical lens exceeds the upper limit of the above relation, the surface shape of the object side surface of the sixth lens element at the circumference is excessively curved, which may cause poor molding and affect the manufacturing yield.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.6< f1/f123<0.8;
f1 is the focal length of the first lens, and f123 is the combined focal length of the first lens, the second lens and the third lens.
By defining the above relation, the refractive power of the front lens group formed by the first lens element to the third lens element is reasonably enhanced, so that the effective convergence of incident light rays can be enhanced, the total length of the optical lens element can be shortened, and a larger angle of view can be obtained. When the optical lens exceeds the upper limit of the relation, the equivalent positive refractive power of the front lens group is too strong, which easily causes insufficient aberration correction capability of the image side lens, thereby enabling the optical lens to generate higher-order aberration and reducing imaging quality. When the optical lens is lower than the lower limit of the relation, the equivalent positive refractive power of the front lens group is insufficient, so that effective convergence of incident light is difficult to realize, the total length of the optical lens is difficult to reduce, and the miniaturization design of the optical lens is not facilitated.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0< | (R21+R22)/(R21-R22) | <0.8;
r21 is a radius of curvature of the object side surface of the second lens element at the optical axis, and R22 is a radius of curvature of the image side surface of the second lens element at the optical axis.
When the optical lens meets the above relation, the curvature radius of the object side surface and the curvature radius of the image side surface of the second lens can be properly configured, so that the shape of the second lens is not excessively bent, and the sensitivity of the optical lens can be reduced while the astigmatic aberration of the optical lens is corrected, thereby being beneficial to improving the product yield.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.1< FFL/BL <0.3;
FFL is the minimum distance between the image side surface of the sixth lens element and the imaging surface of the optical lens element in the optical axis direction, and BL is the distance between the object side surface of the first lens element and the image side surface of the sixth lens element in the optical axis direction.
When the optical lens meets the relation, the structure of the optical lens can be more compact, the miniaturization design is facilitated, the optical lens can have longer back focus at the same time, the optical lens is ensured to have enough focusing range, and the optical lens is better matched with a chip.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.5< CTAL/TTL <0.6;
CTAL is the sum of thicknesses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens on the optical axis.
Through the limitation of the relation, the total length of the optical lens can be effectively shortened under the condition of meeting the requirements of high pixels and high imaging quality, and the whole length of the optical lens can be further compressed, so that the whole structure of the optical lens is more compact, and the miniaturization and light-weight design of the optical lens are realized.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the optical lens satisfies the following relation: 0.3mm -1 <FNO/TTL<0.5mm -1 ；
And FNO is the f-number of the optical lens.
When the optical lens meets the relation, the optical lens can simultaneously meet the design requirements of large aperture and miniaturization, provides enough light quantity for shooting and shooting, and meets the requirements of high-image-quality and high-definition shooting. When the optical lens exceeds the range of the above relation, the light flux of the optical lens cannot be considered while the miniaturization design of the optical lens is realized, so that the light flux is insufficient, and the definition of the shot picture is reduced.
In a second aspect, the present invention discloses an image capturing module, where the image capturing module includes a photosensitive chip and the optical lens described in the first aspect, and the photosensitive chip is disposed on an image side of the optical lens. The imaging module with the optical lens can realize the wide-angle characteristic of the optical lens while reducing the total length of the optical lens.
In a third aspect, the invention also discloses an electronic device, which comprises a housing and the camera module set in the second aspect, wherein the camera module set is arranged in the housing. The electronic equipment with the image pickup module can realize the wide-angle characteristic of the optical lens while reducing the total length of the optical lens.
Compared with the prior art, the application has the beneficial effects that:
the optical lens and the camera module provided by the embodiment of the application are six-piece type lenses, the number of the used lenses is relatively small, the structure of the optical lens is simple, and the refractive power and the surface shape of each lens are reasonably designed, so that the optical lens meets the following relational expression: 7.5mm < TTL/tan (HFOV) <11mm, which is advantageous in reducing the total length of the optical lens, while enabling the wide angle characteristic of the optical lens.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an optical lens disclosed in a first embodiment of the present application;
fig. 2 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens according to the first embodiment of the present application;
FIG. 3 is a schematic view of an optical lens according to a second embodiment of the present application;
fig. 4 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens according to a second embodiment of the present application;
FIG. 5 is a schematic view of an optical lens according to a third embodiment of the present application;
fig. 6 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens according to a third embodiment of the present application;
fig. 7 is a schematic structural view of an optical lens disclosed in a fourth embodiment of the present application;
fig. 8 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens according to a fourth embodiment of the present application;
fig. 9 is a schematic structural view of an optical lens disclosed in a fifth embodiment of the present application;
fig. 10 is a longitudinal spherical aberration diagram (mm), astigmatic curve diagram (mm) and distortion curve diagram (%) of an optical lens according to a fifth embodiment of the present application;
FIG. 11 is a schematic view of a camera module according to the present disclosure;
fig. 12 is a schematic structural view of an electronic device disclosed in the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The technical scheme of the application will be further described with reference to the examples and the accompanying drawings.
Referring to fig. 1, according to a first aspect of the present application, an optical lens 100 is disclosed, the optical lens 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 sequentially disposed from an object side to an image side along an optical axis O. In imaging, light enters 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 in order from the object side of the first lens L1 and finally forms an image on the imaging surface 101 of the optical lens 100. The first lens element L1 with positive refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with positive refractive power, the fourth lens element L4 and the fifth lens element L5 with positive refractive power (e.g., positive refractive power or negative refractive power), and the sixth lens element L6 with negative refractive power.
Further, the object-side surface S1 of the first lens element L1 can be convex at the paraxial region O, the image-side surface S2 of the first lens element L1 can be convex or concave at the paraxial region O, the object-side surface S3 of the second lens element L2 can be concave at the paraxial region O, the image-side surface S4 of the second lens element L2 can be concave at the paraxial region O, the object-side surface S5 of the third lens element L3 can be convex at the paraxial region O, the image-side surface S6 of the third lens element L3 can be convex or concave at the paraxial region O, the object-side surface S7 of the fourth lens element L4 can be convex or concave at the paraxial region O, the image-side surface S8 of the fourth lens element L4 can be concave at the paraxial region O, the image-side surface S9 of the fifth lens element L5 can be convex or concave at the paraxial region O, the object-side surface S11 of the sixth lens element L6 can be convex at the paraxial region O, and the image-side surface S12 of the sixth lens element L6 can be concave at the paraxial region O.
In the optical lens provided by the present application, the first lens element L1 and the second lens element L2 have positive refractive power and negative refractive power, respectively, which is beneficial to stably converging light rays within a small angle into the optical lens 100. Meanwhile, the object side surface S1 of the first lens element L1 is convex at a paraxial region thereof, which is conducive to enhancing the refractive power of the first lens element L1 and improving the capability of the first lens element L1 to converge light. The object side surface S3 and the image side surface S4 of the second lens element L2 are concave at the paraxial region thereof, so as to reduce the head size of the optical lens assembly 100, and the object side surface S3 and the object side surface S5 thereof with positive refractive power are convex at the paraxial region thereof, so that the incident light is effectively converged at the center and the edge when passing through the third lens element L3, thereby correcting the edge aberration, improving the resolution of the optical lens assembly 100, improving the imaging quality of the optical lens assembly 100, and simultaneously realizing the compression of the total length of the optical lens assembly 100, thereby realizing the miniaturization of the optical lens assembly 100. The concave design of the image side surface S8 of the fourth lens element L4 at the paraxial region can optimize the aberration correction capability of the optical lens 100, which is beneficial to improving the imaging quality of the optical lens 100. The object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are respectively convex and concave at a paraxial region, so that on one hand, an exit angle of light can be controlled to reduce sensitivity of the optical lens element 100, and on the other hand, a back focus of the optical lens element 100 can be controlled to ensure that the optical lens element 100 has a sufficient focusing range without being excessively compressed, thereby better matching with a chip. The sixth lens element L6 provides negative refractive power to the optical lens 100, which is beneficial to balancing the aberration generated by the incident light passing through the first lens element L1 to the fifth lens element L5, thereby improving the imaging quality of the optical lens 100.
In some embodiments, the optical lens 100 may be applied to electronic devices such as a smart phone and a smart tablet, and materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 may be plastic, so that the optical lens 100 has good optical effects and can reduce cost.
In some embodiments, the optical lens 100 further includes a diaphragm 102, and the diaphragm 102 may be an aperture diaphragm or a field diaphragm, which may be disposed between the object side of the optical lens 100 and the object side S1 of the first lens L1. It is to be understood that in other embodiments, the diaphragm 102 may be disposed between two adjacent lenses, for example, between the second lens L2 and the third lens L3, and the arrangement is adjusted according to the actual situation, which is not particularly limited in this embodiment.
In some embodiments, the optical lens 100 further includes an optical filter L7, such as an infrared optical filter, disposed between the image side surface S12 of the sixth lens element L6 and the imaging surface 101 of the optical lens 100, so as to filter out light rays of other wavelength bands, such as visible light, and only allow infrared light to pass through, so that the optical lens 100 can be used as an infrared optical lens, i.e., the optical lens 100 can also image in a dim environment and other special application scenarios and obtain better image effects.
In some embodiments, the optical lens 100 satisfies the following relationship: 7.5mm < TTL/tan (HFOV) <11mm, wherein TTL is the distance between the object side surface S1 of the first lens L1 and the imaging surface 101 of the optical lens 100 on the optical axis O (i.e., the total length of the optical lens 100), and tan (HFOV) is the tangent of half of the maximum field angle of the optical lens 100. When the optical lens 100 satisfies the above-described relational expression, the wide-angle characteristic can be achieved while reducing the total length of the optical lens 100. However, when the optical lens 100 exceeds the upper limit of the above relation, the angle of view of the optical lens 100 is too small, so that the large-field characteristic is difficult to be satisfied, and a large-scale scene cannot be shot; when the optical lens 100 is below the lower limit of the above relation, the field angle of the optical lens 100 is too large, which easily causes excessive off-axis distortion, and distortion occurs at the periphery of the image, which eventually results in a decrease in the imaging performance of the optical lens 100.
In some embodiments, the optical lens 100 satisfies the following relationship: 0.2< ct1/IMGH <0.4, ct1 being the thickness of the first lens L1 on the optical axis O, IMGH being the radius of the maximum effective imaging circle of the optical lens 100. When the optical lens 100 satisfies the above relation, the optical lens 100 can satisfy the requirements of high pixel and good image quality, and meanwhile, the optical lens 100 has a thicker first lens L1, which is beneficial to making the mechanical bearing position of the first lens L1 move sufficiently towards the image side direction so as to deepen the embedding depth of the optical lens 100, and is beneficial to reducing the diameter of the head of the optical lens 100 and optimizing the appearance structure of the optical lens 100.
In some embodiments, the optical lens 100 satisfies the following relationship: 0.7< |SAG62|/CT6<1.8;
SAG62 is the sagittal height of the sixth lens L6 at the maximum effective radius of the image-side surface S12, i.e., the distance between a point on the image-side surface S12 of the sixth lens L6 and the intersection point of the image-side surface S12 of the sixth lens L6 and the optical axis O along the direction parallel to the optical axis O, and CT6 is the thickness of the sixth lens L6 on the optical axis O. When the optical lens 100 satisfies the above relation, the shape of the sixth lens L6 can be well controlled, thereby facilitating the manufacture and molding of the sixth lens L6 and reducing the defect of molding failure. Meanwhile, the field curvature generated by each lens in the object side can be trimmed, so that the balance of the field curvature of the optical lens 100 is ensured, namely, the field curvature sizes of different view fields tend to be balanced, thereby enabling the image quality of the whole optical lens 100 to be uniform and improving the imaging quality of the optical lens 100. When the optical lens 100 is below the lower limit of the above-mentioned relation, the surface shape of the object-side surface S12 of the sixth lens L6 at the circumference is too smooth, and the off-axis field of view ray is not sufficiently deflected, which is not beneficial to the correction of distortion and curvature of field, whereas when the optical lens 100 exceeds the upper limit of the above-mentioned relation, the surface shape of the object-side surface S12 of the sixth lens L6 at the circumference is excessively curved, which may result in poor molding and affect the manufacturing yield.
In some embodiments, the optical lens 100 satisfies the following relationship: 0.6< f1/f123<0.8, f1 is the focal length of the first lens L1, and f123 is the combined focal length of the first lens L1, the second lens L2, and the third lens L3.
By defining the above relation, the refractive power of the front lens group formed by the first lens element L1 to the third lens element L3 is reasonably enhanced, so that the effective focusing of the incident light can be enhanced, and the overall length of the optical lens 100 can be shortened, and a larger angle of view of the optical lens 100 can be obtained. When the optical lens 100 exceeds the upper limit of the above relation, the equivalent positive refractive power of the front lens group is too strong, which easily results in insufficient aberration correction capability of the image side lens, so that the optical lens 100 generates higher-order aberration and reduces imaging quality. When the optical lens 100 exceeds the lower limit of the above relation, the equivalent positive refractive power of the front lens group is insufficient, so that effective focusing of the incident light is difficult to achieve, the total length of the optical lens 100 is difficult to be reduced, and the miniaturization design of the optical lens 100 is not favored.
In some embodiments, the optical lens 100 satisfies the following relationship: 0< | (R21+R22)/(R21-R22) | <0.8, R21 is the radius of curvature of the object-side surface S3 of the second lens element L2 at the optical axis O, and R22 is the radius of curvature of the image-side surface S3 of the second lens element L2 at the optical axis O. When the optical lens 100 satisfies the above relation, the curvature radius of the object-side surface S3 and the curvature radius of the image-side surface of the second lens L2 can be properly configured, so that the shape of the second lens L2 is not excessively curved, and the sensitivity of the optical lens 100 can be reduced while correcting the astigmatic aberration of the optical lens 100, thereby being beneficial to improving the product yield.
In some embodiments, the optical lens 100 satisfies the following relationship: 0.1< ffl/BL <0.3, ffl is the minimum distance between the image side surface of the sixth lens element and the imaging surface of the optical lens 100 in the direction of the optical axis O, and BL is the distance between the object side surface S1 of the first lens element L1 and the image side surface S12 of the sixth lens element L6 on the optical axis O. When the optical lens 100 satisfies the above relation, the structure of the optical lens 100 can be more compact, which is beneficial to miniaturization design, and the optical lens 100 can have longer back focus at the same time, so that the optical lens 100 is ensured to have enough focusing range, and better match with the chip.
In some embodiments, the optical lens 100 satisfies the following relationship: 0.5< CTAL/TTL <0.6, CTAL is the sum of thicknesses of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 on the optical axis O. Through the limitation of the relation, the total length of the optical lens 100 can be effectively shortened under the condition of meeting the requirements of high pixels and high imaging quality, and the whole length of the optical lens 100 can be further reduced, so that the whole structure of the optical lens 100 is more compact, and the miniaturization and light-weight design of the optical lens 100 is realized.
In some embodiments, the optical lens 100 satisfies the following relationship: 0.3mm -1 <FNO/TTL<0.5mm -1 FNO is the f-number of optical lens 100. When the optical lens 100 satisfies the above relation, the optical lens 100 can simultaneously satisfy the design requirements of large aperture and miniaturization, provide enough light for shooting, and satisfy the requirements of high-quality and high-definition shooting. When the optical lens 100 exceeds the range of the above relation, the light passing amount of the optical lens 100 cannot be considered while the optical lens 100 is miniaturized, and the light passing amount is insufficient, so that the definition of the photographed image is lowered.
The optical lens 100 of the present embodiment will be described in detail below with reference to specific parameters.
First embodiment
The optical lens 100 according to the first embodiment of the present application is shown in fig. 1, wherein the optical lens 100 includes a stop 102, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a filter element L7, which are disposed in order from an object side to an image side along an optical axis O, the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has positive refractive power, the fifth lens element L5 has negative refractive power, and the sixth lens element L6 has negative refractive power.
Further, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are convex and concave at the paraxial region O, the object-side surface S3 and the image-side surface S4 of the second lens element L2 are concave at the paraxial region O, the object-side surface S5 and the image-side surface S6 of the third lens element L3 are convex and concave at the paraxial region O, the object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are convex and concave at the paraxial region O, the object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are concave and convex at the paraxial region O, and the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are convex and concave at the paraxial region O.
Specifically, taking the effective focal length f= 5.4333mm of the optical lens 100, half hfov= 35.6978 of the maximum field angle of the optical lens 100, the optical total length ttl=5.7 mm of the optical lens 100, and the aperture size fno=2.4 as an example, other parameters of the optical lens 100 are given in table 1 below. The elements from the object side to the image side are sequentially arranged in the order of the elements from top to bottom in table 1 along the optical axis O of the optical lens 100. In the same lens element, the surface with smaller surface number is the object side surface of the lens element, and the surface with larger surface number is the image side surface of the lens element, and the surface numbers 2 and 3 correspond to the object side surface S1 and the image side surface S2 of the first lens element L1, respectively. The radius Y in table 1 is the radius of curvature of the object or image side of the corresponding surface number at the paraxial region O. The first value in the "thickness" parameter array of the lens is the thickness of the lens on the optical axis O, and the second value is the distance from the image side surface of the lens to the latter surface on the optical axis O. The value of the diaphragm 102 in the "thickness" parameter row is the distance between the diaphragm 102 and the vertex of the subsequent surface (the vertex refers to the intersection point of the surface and the optical axis O) on the optical axis O, and the direction from the object side surface of the first lens L1 to the image side surface of the last lens is the positive direction of the optical axis O by default, when the value is negative, it indicates that the diaphragm 102 is disposed on the right side of the vertex of the subsequent surface, and when the thickness of the diaphragm 102 is positive, the diaphragm 102 is on the left side of the vertex of the subsequent surface. It is understood that the units of Y radius, thickness, and focal length in Table 1 are all mm. And the reference wavelength of the effective focal length of the lens in table 1 was 546.0740nm, and the reference wavelength of the refractive index and abbe number of the lens material was 587.56nm.
TABLE 1
In the first embodiment, the object side surface and the image side surface of any one of the first lens L1 to the sixth lens L6 are aspherical, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of the radius R of Y in table 1 above); k is a conic coefficient; ai is a correction coefficient corresponding to the i-th higher term of the aspherical surface. Table 2 shows the higher order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each of the aspherical mirrors S1-S16 in the first embodiment.
TABLE 2
Referring to fig. 2 (a), fig. 2 (a) shows a longitudinal spherical aberration diagram of the optical lens 100 of the first embodiment at wavelengths of 656.2725nm, 587.5618nm, 546.0740nm, 486.1327nm and 435.8343 nm. In fig. 2 (a), the abscissa along the X-axis direction represents the focus shift, and the ordinate along the Y-axis direction represents the normalized field of view. As can be seen from fig. 2 (a), the optical lens 100 in the first embodiment has a better spherical aberration value, which indicates that the optical lens 100 in the present embodiment has a better imaging quality.
Referring to fig. 2 (B), fig. 2 (B) is a light astigmatism diagram of the optical lens 100 at a wavelength of 546.0740nm in the first embodiment. Wherein, the abscissa along the X-axis direction represents focus offset, and the ordinate along the Y-axis direction represents image height in mm. The astigmatic curves represent the sub-arc imaging surface curvature T and the sagittal arc imaging surface curvature S, and it can be seen from fig. 2 (B) that at this wavelength, the astigmatism of the optical lens 100 is well compensated.
Referring to fig. 2 (C), fig. 2 (C) is a graph of distortion of the optical lens 100 at a wavelength of 546.0740nm in the first embodiment. Wherein, the abscissa along the X-axis direction represents distortion, and the ordinate along the Y-axis direction represents image height in mm. As can be seen from fig. 2 (C), the distortion of the optical lens 100 becomes well corrected at the wavelength 546.0740 nm.
Second embodiment
Referring to fig. 3, fig. 3 is a schematic structural diagram of an optical lens 100 according to a second embodiment of the present application. The optical lens 100 includes a stop 102, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a filter element L7, which are disposed in order from an object side to an image side along an optical axis O, wherein the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has negative refractive power, the fifth lens element L5 has negative refractive power, and the sixth lens element L6 has negative refractive power.
Further, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are convex at the paraxial region O, the object-side surface S3 and the image-side surface S4 of the second lens element L2 are concave at the paraxial region O, the object-side surface S5 and the image-side surface S6 of the third lens element L3 are convex at the paraxial region O, the object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are convex and concave at the paraxial region O, the object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are concave and convex at the paraxial region O, and the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are convex and concave at the paraxial region O.
In the second embodiment, taking the effective focal length f= 5.3449mm of the optical lens 100, half hfov= 36.5478 of the maximum field angle of the optical lens 100, the total optical length ttl=6.15 mm of the optical lens 100, and the aperture size fno=2.4 as examples, other parameters are given in the following table 3, and the definition of each parameter can be obtained from the description of the foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 3 are all mm. And the reference wavelength of the effective focal length of the lens in table 3 was 546.0740nm, and the reference wavelength of the refractive index and abbe number of the lens material was 587.56nm.
TABLE 3 Table 3
In the second embodiment, table 4 gives the higher order coefficients that can be used for each aspherical mirror in the second embodiment, where each aspherical mirror shape can be defined by the formula given in the first embodiment.
TABLE 4 Table 4
Referring to fig. 4 (a), fig. 4 (a) shows a longitudinal spherical aberration diagram of the optical lens 100 of the second embodiment at wavelengths of 656.2725nm, 587.5618nm, 546.0740nm, 486.1327nm and 435.8343 nm. In fig. 4 (a), the abscissa along the X-axis direction represents the focus shift, and the ordinate along the Y-axis direction represents the normalized field of view. As can be seen from fig. 4 (a), the optical lens 100 in the second embodiment has a better spherical aberration value, which indicates that the optical lens 100 in the present embodiment has a better imaging quality.
Referring to fig. 4 (B), fig. 4 (B) is a light astigmatism diagram of the optical lens 100 at a wavelength of 546.0740nm in the second embodiment. Wherein, the abscissa along the X-axis direction represents focus offset, and the ordinate along the Y-axis direction represents image height in mm. The astigmatic curves represent the sub-arc imaging surface curvature T and the sagittal arc imaging surface curvature S, and it can be seen from fig. 4 (B) that at this wavelength, the astigmatism of the optical lens 100 is well compensated.
Referring to fig. 4 (C), fig. 4 (C) is a graph showing distortion of the optical lens 100 at a wavelength of 546.0740nm in the second embodiment. Wherein, the abscissa along the X-axis direction represents distortion, and the ordinate along the Y-axis direction represents image height in mm. As can be seen from fig. 4 (C), the distortion of the optical lens 100 becomes well corrected at the wavelength 546.0740 nm.
Third embodiment
Referring to fig. 5, fig. 5 is a schematic structural diagram of an optical lens 100 according to a third embodiment of the present application. The optical lens 100 includes a stop 102, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a filter element L7, which are disposed in order from an object side to an image side along an optical axis O, wherein the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has positive refractive power, the fifth lens element L5 has negative refractive power, and the sixth lens element L6 has negative refractive power.
Further, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are convex at the paraxial region O, the object-side surface S3 and the image-side surface S4 of the second lens element L2 are concave at the paraxial region O, the object-side surface S5 and the image-side surface S6 of the third lens element L3 are convex and concave at the paraxial region O, the object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are convex and concave at the paraxial region O, the object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are convex and concave at the paraxial region O, and the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are convex and concave at the paraxial region O.
In the third embodiment, taking the effective focal length f= 5.578mm of the optical lens 100, half hfov= 35.2691 of the maximum field angle of the optical lens 100, the total optical length ttl= 6.405mm of the optical lens 100, and the aperture size fno=2.3 as examples, other parameters are given in the following table 5, and the definition of each parameter can be obtained from the description of the foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 5 are all mm. And the reference wavelength of the effective focal length of the lens in table 5 was 546.0740nm, and the reference wavelength of the refractive index and abbe number of the lens material was 587.56nm.
TABLE 5
In a third embodiment, table 6 gives the higher order coefficients that can be used for each of the aspherical mirror surfaces in the third embodiment, where each of the aspherical surface profiles can be defined by the formula given in the first embodiment.
TABLE 6
Referring to fig. 6 (a), fig. 6 (a) shows a longitudinal spherical aberration diagram of the optical lens 100 of the third embodiment at wavelengths of 656.2725nm, 587.5618nm, 546.0740nm, 486.1327nm and 435.8343 nm. In fig. 6 (a), the abscissa along the X-axis direction represents the focus shift, and the ordinate along the Y-axis direction represents the normalized field of view. As can be seen from fig. 6 (a), the optical lens 100 in the third embodiment has a better spherical aberration value, which indicates that the optical lens 100 in the present embodiment has a better imaging quality.
Referring to fig. 6 (B), fig. 6 (B) is a light astigmatism diagram of the optical lens 100 at a wavelength of 546.0740nm in the third embodiment. Wherein, the abscissa along the X-axis direction represents focus offset, and the ordinate along the Y-axis direction represents image height in mm. The astigmatic curves represent the sub-arc imaging surface curvature T and the sagittal arc imaging surface curvature S, and it can be seen from fig. 6 (B) that at this wavelength, the astigmatism of the optical lens 100 is well compensated.
Referring to fig. 6 (C), fig. 6 (C) is a graph showing distortion of the optical lens 100 at a wavelength of 546.0740nm in the third embodiment. Wherein, the abscissa along the X-axis direction represents distortion, and the ordinate along the Y-axis direction represents image height in mm. As can be seen from fig. 6 (C), the distortion of the optical lens 100 becomes well corrected at the wavelength 546.0740 nm.
Fourth embodiment
Referring to fig. 7, fig. 7 is a schematic structural diagram of an optical lens 100 according to a fourth embodiment of the present application. The optical lens 100 includes a stop 102, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a filter element L7, which are disposed in order from an object side to an image side along an optical axis O, wherein the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has negative refractive power, the fifth lens element L5 has positive refractive power, and the sixth lens element L6 has negative refractive power.
Further, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are respectively convex and concave at the paraxial region O, the object-side surface S3 and the image-side surface S4 of the second lens element L2 are respectively concave at the paraxial region O, the object-side surface S5 and the image-side surface S6 of the third lens element L3 are respectively convex and concave at the paraxial region O, the object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are respectively concave at the paraxial region O, the object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are respectively concave and convex at the paraxial region O, and the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are respectively convex and concave at the paraxial region O.
In the fourth embodiment, taking the effective focal length f= 6.1764mm of the optical lens 100, half hfov= 31.926 of the maximum field angle of the optical lens 100, the total optical length ttl= 6.423mm of the optical lens 100, and the aperture size fno=2.6 as examples, other parameters are given in the following table 7, and the definition of each parameter can be obtained from the description of the foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 7 are all mm. And the reference wavelength of the effective focal length of the lens in table 7 was 546.0740nm, and the reference wavelength of the refractive index and abbe number of the lens material was 587.56nm.
TABLE 7
In the fourth embodiment, table 8 gives the higher order coefficients that can be used for each aspherical mirror in the fourth embodiment, where each aspherical mirror shape can be defined by the formula given in the first embodiment.
TABLE 8
/>
Referring to fig. 8 (a), fig. 8 (a) shows a longitudinal spherical aberration diagram of the optical lens 100 of the fourth embodiment at wavelengths of 656.2725nm, 587.5618nm, 546.0740nm, 486.1327nm, and 435.8343 nm. In fig. 8 (a), the abscissa along the X-axis direction represents the focus shift, and the ordinate along the Y-axis direction represents the normalized field of view. As can be seen from fig. 8 (a), the optical lens 100 in the fourth embodiment has a better spherical aberration value, which indicates that the optical lens 100 in the present embodiment has a better imaging quality.
Referring to fig. 8 (B), fig. 8 (B) is a light astigmatism diagram of the optical lens 100 of the fourth embodiment at a wavelength of 546.0740 nm. Wherein, the abscissa along the X-axis direction represents focus offset, and the ordinate along the Y-axis direction represents image height in mm. The astigmatic curves represent the sub-arc imaging surface curvature T and the sagittal arc imaging surface curvature S, and it can be seen from fig. 8 (B) that at this wavelength, the astigmatism of the optical lens 100 is well compensated.
Referring to fig. 8 (C), fig. 8 (C) is a graph of distortion of the optical lens 100 of the fourth embodiment at a wavelength of 546.0740 nm. Wherein, the abscissa along the X-axis direction represents distortion, and the ordinate along the Y-axis direction represents image height in mm. As can be seen from fig. 8 (C), the distortion of the optical lens 100 becomes well corrected at the wavelength 546.0740 nm.
Fifth embodiment
Referring to fig. 9, fig. 9 is a schematic structural diagram of an optical lens 100 according to a fifth embodiment of the application. The optical lens 100 includes a stop 102, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a filter element L7, which are disposed in order from an object side to an image side along an optical axis O, wherein the first lens element L1 has positive refractive power, the second lens element L2 has negative refractive power, the third lens element L3 has positive refractive power, the fourth lens element L4 has negative refractive power, the fifth lens element L5 has negative refractive power, and the sixth lens element L6 has negative refractive power.
Further, the object-side surface S1 and the image-side surface S2 of the first lens element L1 are convex at the paraxial region O, the object-side surface S3 and the image-side surface S4 of the second lens element L2 are concave at the paraxial region O, the object-side surface S5 and the image-side surface S6 of the third lens element L3 are convex at the paraxial region O, the object-side surface S7 and the image-side surface S8 of the fourth lens element L4 are convex and concave at the paraxial region O, the object-side surface S9 and the image-side surface S10 of the fifth lens element L5 are concave at the paraxial region O, and the object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are convex and concave at the paraxial region O.
In the fifth embodiment, taking the effective focal length f= 5.7556mm of the optical lens 100, half hfov= 35.1249 of the maximum field angle of the optical lens 100, the total optical length ttl=6.3 mm of the optical lens 100, and the aperture size fno=2.6 as examples, other parameters are given in the following table 9, and the definition of each parameter can be obtained from the description of the foregoing embodiments, which is not repeated herein. It is understood that the units of Y radius, thickness, and focal length in Table 9 are all mm. And the reference wavelength of the effective focal length of the lens in table 9 was 546.0740nm, and the reference wavelength of the refractive index and abbe number of the lens material was 587.56nm.
TABLE 9
In the fifth embodiment, table 10 gives the higher order coefficients that can be used for each aspherical mirror surface in the fifth embodiment, where each aspherical surface profile can be defined by the formula given in the first embodiment.
Table 10
Referring to fig. 10 (a), fig. 10 (a) shows a longitudinal spherical aberration diagram of the optical lens 100 of the fifth embodiment at wavelengths of 656.2725nm, 587.5618nm, 546.0740nm, 486.1327nm, and 435.8343 nm. In fig. 10 (a), the abscissa along the X-axis direction represents the focus shift, and the ordinate along the Y-axis direction represents the normalized field of view. As can be seen from fig. 10 (a), the optical lens 100 in the fifth embodiment has a better spherical aberration value, which indicates that the optical lens 100 in the present embodiment has a better imaging quality.
Referring to fig. 10 (B), fig. 10 (B) is a light astigmatism diagram of the optical lens 100 of the fifth embodiment at a wavelength of 546.0740 nm. Wherein, the abscissa along the X-axis direction represents focus offset, and the ordinate along the Y-axis direction represents image height in mm. The astigmatic curves represent the sub-arc imaging surface curvature T and the sagittal arc imaging surface curvature S, and as can be seen from fig. 10 (B), at this wavelength, the astigmatism of the optical lens 100 is well compensated.
Referring to fig. 10 (C), fig. 10 (C) is a graph showing distortion of the optical lens 100 at a wavelength of 546.0740nm in the fifth embodiment. Wherein, the abscissa along the X-axis direction represents distortion, and the ordinate along the Y-axis direction represents image height in mm. As can be seen from fig. 10 (C), the distortion of the optical lens 100 becomes well corrected at the wavelength 546.0740 nm.
Referring to table 11, table 11 is a summary of the ratios of the relationships in the first embodiment to the fifth embodiment of the present application.
TABLE 11
Referring to fig. 11, the application further discloses an image capturing module 200, where the image capturing module 200 includes a photosensitive chip 201 and the optical lens 100 as described above, and the photosensitive chip 201 is disposed on an image side of the optical lens 100. The optical lens 100 may be used to receive an optical signal of a subject and project the optical signal to the photo-sensing chip 201, and the photo-sensing chip 201 may be used to convert the optical signal corresponding to the subject into an image signal. And will not be described in detail here. It can be appreciated that the image pickup module 200 having the above-described optical lens 100 can realize the wide angle characteristic of the optical lens 100 while reducing the total length of the optical lens 100.
Referring to fig. 12, the application further discloses an electronic device 300, where the electronic device 300 includes a housing 301 and the camera module 200 as described above, and the camera module 200 is disposed in the housing 301 to obtain image information. The electronic device 300 may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, etc. It can be appreciated that the electronic device 300 having the image capturing module 200 also has all the technical effects of the optical lens 100. That is, the electronic apparatus 300 can realize the wide angle characteristic of the optical lens 100 while reducing the total length of the optical lens 100.
The above describes an optical lens, a camera module and an electronic device in detail, and specific examples are applied to illustrate the principles and implementation of the present application, and the above description of the embodiments is only used to help understand the optical lens, the camera module and the electronic device of the present application and their core ideas; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present application, the present disclosure should not be construed as limiting the present application in summary.
Claims (8)
1. An optical lens comprising six lenses with refractive power, the optical lens comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in order from an object side to an image side along an optical axis;
the first lens element with positive refractive power has a convex object-side surface at a paraxial region;
the second lens element with negative refractive power has a concave object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
the third lens element with positive refractive power has a convex object-side surface at a paraxial region;
the fourth lens element with refractive power has a concave image-side surface at a paraxial region;
the fifth lens element with refractive power;
the sixth lens element with negative refractive power has a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region;
the optical lens satisfies the following relation:
7.5mm < TTL/tan (HFOV) <11mm, 0.6< f1/f123<0.8, and 0.5< CTAL/TTL <0.6;
wherein TTL is a distance from an object side surface of the first lens to an imaging surface of the optical lens on the optical axis, tan (HFOV) is a tangent value of half of a maximum field angle of the optical lens, f1 is a focal length of the first lens, f123 is a combined focal length of the first lens, the second lens and the third lens, and CTAL is a sum of thicknesses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens on the optical axis.
2. The optical lens of claim 1, wherein the optical lens satisfies the following relationship:
0.2<CT1/IMGH<0.4；
CT1 is the thickness of the first lens on the optical axis, and IMGH is the radius of the maximum effective imaging circle of the optical lens.
3. The optical lens of claim 1, wherein the optical lens satisfies the following relationship:
0.7<|SAG62|/CT6<1.8；
SAG62 is the sagittal height at the maximum effective radius of the image-side surface of the sixth lens, and CT6 is the thickness of the sixth lens on the optical axis.
4. The optical lens of claim 1, wherein the optical lens satisfies the following relationship:
0<|(R21+R22)/(R21-R22)|<0.8；
r21 is a radius of curvature of the object side surface of the second lens element at the optical axis, and R22 is a radius of curvature of the image side surface of the second lens element at the optical axis.
5. The optical lens of claim 1, wherein the optical lens satisfies the following relationship:
0.1<FFL/BL<0.3；
FFL is the minimum distance between the image side surface of the sixth lens element and the imaging surface of the optical lens element in the optical axis direction, and BL is the distance between the object side surface of the first lens element and the image side surface of the sixth lens element in the optical axis direction.
6. The optical lens of claim 1, wherein the optical lens satisfies the following relationship:
0.3mm -1 <FNO/TTL<0.5mm -1 ；
And FNO is the f-number of the optical lens.
7. An imaging module, wherein the imaging module comprises a photosensitive chip and the optical lens according to any one of claims 1 to 6, and the photosensitive chip is disposed on an image side of the optical lens.
8. An electronic device, comprising a housing and the camera module of claim 7, wherein the camera module is disposed on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110972831.5A CN113741006B (en) | 2021-08-24 | 2021-08-24 | Optical lens, camera module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110972831.5A CN113741006B (en) | 2021-08-24 | 2021-08-24 | Optical lens, camera module and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113741006A CN113741006A (en) | 2021-12-03 |
| CN113741006B true CN113741006B (en) | 2023-09-05 |
Family
ID=78732477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110972831.5A Active CN113741006B (en) | 2021-08-24 | 2021-08-24 | Optical lens, camera module and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113741006B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114618B (en) * | 2021-11-15 | 2023-09-05 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| CN114326033B (en) * | 2022-01-11 | 2024-04-23 | 浙江舜宇光学有限公司 | Image pickup lens |
| CN114326059B (en) * | 2022-03-07 | 2022-07-08 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| CN114706197B (en) * | 2022-04-28 | 2023-09-05 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| CN115113366B (en) * | 2022-05-23 | 2023-12-15 | 江西欧菲光学有限公司 | Optical system, lens module and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854606A (en) * | 2011-06-28 | 2013-01-02 | 大立光电股份有限公司 | Optical image capturing lens assembly |
| JP2015121730A (en) * | 2013-12-25 | 2015-07-02 | カンタツ株式会社 | Imaging lens |
| JP2015158571A (en) * | 2014-02-24 | 2015-09-03 | カンタツ株式会社 | Imaging lens having configuration comprising six optical elements |
| CN105278085A (en) * | 2014-06-11 | 2016-01-27 | 先进光电科技股份有限公司 | Optical imaging system |
| CN105589184A (en) * | 2014-11-06 | 2016-05-18 | 先进光电科技股份有限公司 | Optical imaging system |
| CN105589174A (en) * | 2014-11-06 | 2016-05-18 | 先进光电科技股份有限公司 | Optical imaging system |
| CN110515176A (en) * | 2018-05-22 | 2019-11-29 | 先进光电科技股份有限公司 | Optical imaging system |
-
2021
- 2021-08-24 CN CN202110972831.5A patent/CN113741006B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854606A (en) * | 2011-06-28 | 2013-01-02 | 大立光电股份有限公司 | Optical image capturing lens assembly |
| JP2015121730A (en) * | 2013-12-25 | 2015-07-02 | カンタツ株式会社 | Imaging lens |
| JP2015158571A (en) * | 2014-02-24 | 2015-09-03 | カンタツ株式会社 | Imaging lens having configuration comprising six optical elements |
| CN105278085A (en) * | 2014-06-11 | 2016-01-27 | 先进光电科技股份有限公司 | Optical imaging system |
| CN105589184A (en) * | 2014-11-06 | 2016-05-18 | 先进光电科技股份有限公司 | Optical imaging system |
| CN105589174A (en) * | 2014-11-06 | 2016-05-18 | 先进光电科技股份有限公司 | Optical imaging system |
| CN110515176A (en) * | 2018-05-22 | 2019-11-29 | 先进光电科技股份有限公司 | Optical imaging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113741006A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113741006B (en) | Optical lens, camera module and electronic equipment | |
| CN113933968B (en) | Optical lens, camera module and electronic equipment | |
| CN114114654B (en) | Optical system, image capturing module and electronic equipment | |
| CN113946038B (en) | Optical lens, camera module and electronic equipment | |
| CN211786312U (en) | Optical system, camera module and electronic device | |
| CN114296213B (en) | Optical lens, camera module and electronic equipment | |
| CN113156612B (en) | Optical system, image capturing module and electronic equipment | |
| CN114326052B (en) | Optical system, image capturing module and electronic equipment | |
| CN114721126B (en) | Optical lens, camera module and electronic equipment | |
| CN113960759B (en) | Optical lens, camera module and electronic equipment | |
| CN113933969B (en) | Optical lens, camera module and electronic equipment | |
| CN114637094B (en) | Optical lens, camera module and electronic equipment | |
| CN114755803B (en) | Optical lens, camera module and electronic equipment | |
| CN113933966B (en) | Optical lens, camera module and electronic equipment | |
| CN114371547B (en) | Optical lens, camera module and electronic equipment | |
| CN114509862B (en) | Optical system, camera module and electronic equipment | |
| CN114002822B (en) | Optical lens, camera module and electronic equipment | |
| CN113484985B (en) | Optical lens, camera module and electronic equipment | |
| CN113568142B (en) | Optical lens, camera module and electronic equipment | |
| CN112505900A (en) | Optical system, image capturing module and electronic equipment | |
| CN114675399B (en) | Optical lens, camera module and electronic equipment | |
| CN114114618B (en) | Optical lens, camera module and electronic equipment | |
| CN114740590B (en) | Optical lens, camera module and electronic equipment | |
| CN114740593B (en) | Optical lens, camera module and electronic equipment | |
| CN114967075B (en) | Optical lens, camera module and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |