CN114326033B - Image pickup lens - Google Patents
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- CN114326033B CN114326033B CN202210028233.7A CN202210028233A CN114326033B CN 114326033 B CN114326033 B CN 114326033B CN 202210028233 A CN202210028233 A CN 202210028233A CN 114326033 B CN114326033 B CN 114326033B
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- 238000003384 imaging method Methods 0.000 claims abstract description 257
- 230000003287 optical effect Effects 0.000 claims abstract description 70
- 210000001747 pupil Anatomy 0.000 claims description 4
- 230000004075 alteration Effects 0.000 description 41
- 201000009310 astigmatism Diseases 0.000 description 18
- 238000010586 diagram Methods 0.000 description 18
- 230000009286 beneficial effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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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
- 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
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The application discloses an imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens having optical power; a third lens having negative optical power; a fourth lens having optical power; a fifth lens having negative optical power; and a sixth lens having positive optical power. The distance TTL between the object side surface of the first lens and the imaging surface of the imaging lens on the optical axis and the maximum field angle FOV of the imaging lens satisfy: TTL/Tan (FOV) less than or equal to 6mm is less than 8.0mm; and the abbe number V1 of the first lens and the abbe number V2 of the second lens satisfy: 70 < (V1+V2)/2 < 90.
Description
Technical Field
The application relates to the field of optical elements, in particular to an imaging lens.
Background
With the continuous pursuit of the thickness and photographing quality of mobile phones by users, the current camera lens mounted on the mobile phone cannot meet the requirements of users. How to reasonably set the focal power, the surface shape, the material, the key technical parameters and the like of the imaging lens so that the imaging lens has higher imaging performance, smaller volume, more imaging effect and the like has become one of the main aspects of improving the competitiveness of products of various lens manufacturers at present.
Disclosure of Invention
An aspect of the present application provides an imaging lens sequentially including, from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens having optical power; a third lens having negative optical power; a fourth lens having optical power; a fifth lens having negative optical power; a sixth lens having positive optical power; the distance TTL between the object side surface of the first lens and the imaging surface of the imaging lens on the optical axis and the maximum field angle FOV of the imaging lens can be satisfied: TTL/Tan (FOV) less than or equal to 6mm is less than 8.0mm; and the abbe number V1 of the first lens and the abbe number V2 of the second lens may satisfy: 70 < (V1+V2)/2 < 90.
In one embodiment, at least one of the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror surface.
In one embodiment, the center thickness CT1 of the first lens, the center thickness CT2 of the second lens, the refractive index N1 of the first lens, and the refractive index N2 of the second lens may satisfy: 1.0mm < (CT 1-CT 2)/(N1-N2) < 4.0mm.
In one embodiment, the center thickness CT1 of the first lens and the refractive index N1 of the first lens may satisfy: CT 1/(N1-1) is less than or equal to 1.6mm and less than or equal to 2.0mm.
In one embodiment, the center thickness CT2 of the second lens and the refractive index N2 of the second lens may satisfy: CT 2/(N2X (N2-1)) < 1.3mm.
In one embodiment, the air interval T45 on the optical axis of the fourth lens and the fifth lens and the air interval T56 on the optical axis of the fifth lens and the sixth lens may satisfy: T45/T56 is less than or equal to 2.0 and less than 3.5.
In one embodiment, the center thickness CT3 of the third lens, the air interval T23 of the second lens and the third lens on the optical axis, and the air interval T34 of the third lens and the fourth lens on the optical axis may satisfy: CT 3/(T34-T23) < 1.5 < 4.2.
In one embodiment, the center thickness CT5 of the fifth lens, the center thickness CT6 of the sixth lens, and the air interval T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 1.5 < (CT5+CT6)/T56 is less than or equal to 4.2.
In one embodiment, the total effective focal length f of the imaging lens, the center thickness CT1 of the first lens, and the center thickness CT2 of the second lens may satisfy: f/(CT1+CT2) is not less than 4.5 and not more than 5.0.
In one embodiment, the total effective focal length f of the imaging lens, the radius of curvature R1 of the object side surface of the first lens, and the radius of curvature R2 of the image side surface of the first lens may satisfy: F/(R2-R1) < 2.0 < 2.5.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: R4/R3 is more than 1.5 and less than 4.0.
In one embodiment, the total effective focal length f of the imaging lens, the radius of curvature R9 of the object side surface of the fifth lens, and the radius of curvature R10 of the image side surface of the fifth lens may satisfy: 1.0 < f/(R9-R10) < 2.0.
In one embodiment, the total effective focal length f of the imaging lens and the effective focal length f1 of the first lens may satisfy: f/f1 is more than 1.0 and less than or equal to 1.3.
In one embodiment, the total effective focal length f of the imaging lens and the effective focal length f4 of the fourth lens may satisfy: f/|f4| is less than or equal to 0.15.
In one embodiment, the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens may satisfy: f3/f5 is more than or equal to 1.0 and less than 2.0.
In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f6 of the sixth lens may satisfy: the ratio of (f2+f6)/f 1 is less than or equal to 3.5 and less than 6.0.
In one embodiment, the total effective focal length f of the imaging lens and half the diagonal length ImgH of the effective pixel area on the imaging surface of the imaging lens may satisfy: f/ImgH is more than 2.0 and less than 2.5.
In one embodiment, the entrance pupil diameter EPD of the camera lens and the maximum field angle FOV of the camera lens may satisfy: EPD×Tan (FOV) of 3.9 mm.ltoreq.EPD×Tan (FOV) < 4.5mm.
In one embodiment, the center thickness CT1 of the first lens, the center thickness CT2 of the second lens, the refractive index N1 of the first lens, and the refractive index N2 of the second lens may satisfy: the (CT 1-CT 2)/(N1-N2) is less than or equal to 1.3mm and less than or equal to 3.6mm.
In one embodiment, the center thickness CT5 of the fifth lens, the center thickness CT6 of the sixth lens, and the air interval T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 1.5 < (CT5+CT6)/T56 is less than or equal to 3.0.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: R4/R3 is more than 1.5 and less than 2.0.
In one embodiment, the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens may satisfy: f3/f5 is more than or equal to 1.0 and less than or equal to 1.7.
In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f6 of the sixth lens may satisfy: (f2+f6)/f1 is more than or equal to 3.5 and less than or equal to 4.0.
The application provides the camera lens which is applicable to portable electronic products and has at least one of the beneficial effects of large aperture, long focus, miniaturization, good imaging quality and the like through reasonably distributing the focal power and optimizing the optical parameters.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
Fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application;
Fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 1;
Fig. 3 is a schematic diagram showing the structure of an imaging lens according to embodiment 2 of the present application;
Fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 2;
fig. 5 shows a schematic configuration diagram of an imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an imaging lens according to embodiment 4 of the present application;
Fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 4;
Fig. 9 is a schematic diagram showing the structure of an imaging lens according to embodiment 5 of the present application;
Fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 5;
Fig. 11 is a schematic diagram showing the structure of an imaging lens according to embodiment 6 of the present application;
Fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 6;
fig. 13 is a schematic diagram showing the structure of an imaging lens according to embodiment 7 of the present application;
Fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 7;
fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application;
Fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 8, respectively;
fig. 17 is a schematic diagram showing the structure of an imaging lens according to embodiment 9 of the present application; and
Fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 9, respectively.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The image pickup lens according to the exemplary embodiment of the present application may include six lenses having optical power, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, respectively. The six lenses are arranged in order from the object side to the image side along the optical axis. Any two adjacent lenses from the first lens to the sixth lens can have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have positive optical power; the second lens may have positive or negative optical power; the third lens may have negative optical power; the fourth lens may have positive or negative optical power; the fifth lens may have negative optical power; and the sixth lens may have positive optical power.
In an exemplary embodiment of the present application, the first lens is configured to have positive optical power, which is advantageous for converging more light rays and for increasing the aperture of the imaging lens; the third lens is arranged to have negative focal power, so that light rays can be diffused to match with a larger sensor, and meanwhile, by combining the third lens with the first lens, positive and negative focal power combination can be realized, and chromatic aberration can be corrected effectively; setting the fifth lens to have negative optical power and setting the sixth lens to have positive optical power is beneficial to reducing the risk of ghost images on the chip.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: TTL/Tan (FOV) is less than or equal to 6mm and less than 8.0mm, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the imaging lens on the optical axis, and FOV is the maximum field angle of the imaging lens. The lens meets the requirements that TTL/Tan (FOV) is less than or equal to 6mm and less than 8.0mm, is beneficial to realizing the long-focus function of the lens, is beneficial to reducing the overall thickness of the lens, and increases the practicability of the lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 70 < (V1+V2)/2 < 90, where V1 is the Abbe number of the first lens and V2 is the Abbe number of the second lens. More specifically, V1 and V2 may further satisfy: 74 < (V1+V2)/2 < 90. Satisfies 70 < (V1+V2)/2 < 90, and is favorable for ensuring the imaging quality of the imaging lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 1.0mm < (CT 1-CT 2)/(N1-N2) < 4.0mm, wherein CT1 is the center thickness of the first lens, CT2 is the center thickness of the second lens, N1 is the refractive index of the first lens, and N2 is the refractive index of the second lens. More specifically, CT1, CT2, N1, and N2 may further satisfy: the (CT 1-CT 2)/(N1-N2) is less than or equal to 1.3mm and less than or equal to 3.6mm. The lens meets the requirement that (CT 1-CT 2)/(N1-N2) is less than 4.0mm, is beneficial to reasonably controlling the thickness of the first lens and the second lens to increase the processability of the first lens and the second lens, and is beneficial to reasonably controlling the refractive indexes of the first lens and the second lens so as to enable more light rays to enter the camera lens through reasonably distributing the materials and the focal power of the first lens and the second lens, and achieves the effect of light receiving.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: CT 1/(N1-1) is less than or equal to 1.6mm and less than or equal to 2.0mm, wherein CT1 is the center thickness of the first lens, and N1 is the refractive index of the first lens. The lens meets the requirement that CT 1/(N1-1) is less than or equal to 1.6mm and less than or equal to 2.0mm, is favorable for enabling the inclination degree of the object side surface of the first lens to be smaller on the premise of having a light condensing effect, and is further favorable for forming the first lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: CT 2/(N2X (N2-1)) < 1.3mm, wherein CT2 is the center thickness of the second lens and N2 is the refractive index of the second lens. The lens satisfies CT 2/(N2X (N2-1)) < 1.3mm, and is beneficial to controlling the whole bending degree of the second lens, thereby reducing the sensitivity of the lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: T45/T56 is less than or equal to 2.0 and less than 3.5, wherein T45 is the air interval of the fourth lens and the fifth lens on the optical axis, and T56 is the air interval of the fifth lens and the sixth lens on the optical axis. Satisfies that T45/T56 is less than or equal to 2.0 and less than 3.5, can ensure the uniformity of the air interval between the fourth lens and the sixth lens, and avoids generating larger air interval, thereby avoiding spacer stray light generated by the larger air interval.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 1.5 < CT 3/(T34-T23) < 4.2, wherein CT3 is the center thickness of the third lens, T23 is the air space of the second lens and the third lens on the optical axis, and T34 is the air space of the third lens and the fourth lens on the optical axis. The focal length change of the camera lens can be controlled by satisfying CT 3/(T34-T23) < 4.2 with 1.5.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 1.5 < (CT5+CT6)/T56 is less than or equal to 4.2, wherein CT5 is the center thickness of the fifth lens, CT6 is the center thickness of the sixth lens, and T56 is the air space between the fifth lens and the sixth lens on the optical axis. More specifically, CT5, CT6, and T56 may further satisfy: 1.5 < (CT5+CT6)/T56 is less than or equal to 3.0. Satisfies 1.5 < (CT 5+CT6)/T56 less than or equal to 4.2, not only can adjust the field curvature of the outer view field of the camera lens, ensure the performance on the lens axis, but also can reduce the ghost image between the fifth lens and the sixth lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 4.5.ltoreq.f/(CT1+CT2). Ltoreq.5.0, where f is the total effective focal length of the imaging lens, CT1 is the center thickness of the first lens, and CT2 is the center thickness of the second lens. The optical power of the first lens and the second lens can be effectively distributed, and the whole framework of the camera lens is reasonably controlled, wherein f/(CT1+CT2) is less than or equal to 4.5 and less than or equal to 5.0.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 2.0 < f/(R2-R1) < 2.5, where f is the total effective focal length of the imaging lens, R1 is the radius of curvature of the object side of the first lens, and R2 is the radius of curvature of the image side of the first lens. Satisfies 2.0 < f/(R2-R1) < 2.5, and is beneficial to controlling the bending degree of the object side surface and the image side surface of the first lens to facilitate the processability of the first lens and the light receiving effect of the first lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 1.5 < R4/R3 < 4.0, wherein R3 is the radius of curvature of the object-side surface of the second lens and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, R4 and R3 may further satisfy: R4/R3 is more than 1.5 and less than 2.0. Satisfies 1.5 < R4/R3 < 4.0, is beneficial to controlling the bending degree of the object side surface and the image side surface of the second lens to be beneficial to the processability of the second lens, and is beneficial to reducing the sensitivity of the second lens by controlling the curvature of the second lens so as to improve the yield of the photographic lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 1.0 < f/(R9-R10) < 2.0, where f is the total effective focal length of the imaging lens, R9 is the radius of curvature of the object side of the fifth lens, and R10 is the radius of curvature of the image side of the fifth lens. More specifically, f, R9, and R10 may further satisfy: 1.2 < f/(R9-R10) < 1.9. Satisfying 1.0 < f/(R9-R10) < 2.0, the curvature of the object side surface and the image side surface of the fifth lens can be controlled to enable the fifth lens to have negative focal power, so that the fifth lens can have the function of diverging rays.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: f/f1 is more than 1.0 and less than or equal to 1.3, wherein f is the total effective focal length of the imaging lens, and f1 is the effective focal length of the first lens. The optical power of the first lens can be effectively distributed to ensure that the first lens has a condensing effect when the f/f1 is more than 1.0 and less than or equal to 1.3.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: f/|f4|is less than or equal to 0.15, wherein f is the total effective focal length of the imaging lens, and f4 is the effective focal length of the fourth lens. The f/|f4|is less than or equal to 0.15, so that the light converged in front is not converged after passing through the fourth lens, the light has a slight divergence effect, and excessive aberration of the lens due to excessive divergence degree of the light can be avoided, and the performance loss of the lens can be avoided.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 1.0.ltoreq.f3/f 5 < 2.0, where f3 is the effective focal length of the third lens and f5 is the effective focal length of the fifth lens. More specifically, f3 and f5 may further satisfy: f3/f5 is more than or equal to 1.0 and less than or equal to 1.7. Satisfies f3/f5 less than or equal to 1.0 and less than 2.0, and can lead the marginal light to be more gently transited, thereby leading the lens to achieve the aim of long focus.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 3.5.ltoreq.f2+f6)/f 1 < 6.0, wherein f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f6 is the effective focal length of the sixth lens. More specifically, f2, f6, and f1 may further satisfy: (f2+f6)/f1 is more than or equal to 3.5 and less than or equal to 4.0. The curvature directions of the first lens, the second lens and the sixth lens can be reasonably controlled, for example, the first lens and the second lens can be bent to an image plane, and the sixth lens can be bent to an object plane, so that the framework of the lens can be better controlled.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 2.0 < f/ImgH < 2.5, where f is the total effective focal length of the imaging lens and ImgH is half the diagonal length of the effective pixel area on the imaging surface of the imaging lens. Satisfies 2.0 < f/ImgH < 2.5, can control the angle of view of the lens, and ensures the long focal length characteristic of the lens.
In an exemplary embodiment, the imaging lens according to the present application can satisfy: 3.9 mm.ltoreq.EPD×tan (FOV) < 4.5mm, where EPD is the entrance pupil diameter of the camera lens and FOV is the maximum field angle of the camera lens. More specifically, EPD and FOV may further satisfy: EPD×Tan (FOV) of 3.9 mm.ltoreq.EPD×Tan (FOV) < 4.3mm. Satisfies 3.9mm and less than or equal to EPD multiplied by Tan (FOV) less than 4.5mm, can improve the imaging performance of the lens by reasonably controlling the entrance pupil diameter of the camera lens, increase the competitiveness of the lens, and can realize the long focus characteristic of the lens by controlling the maximum field angle of the camera lens.
In an exemplary embodiment, the maximum field angle FOV of the imaging lens may satisfy: FOV < 50 deg.. The total length TTL of the imaging lens (i.e., the distance on the optical axis from the object side surface of the first lens to the imaging surface of the imaging lens) may be in the range of 6mm to 8 mm.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens group may be, for example, in the range of 7.42mm to 8.20mm, the effective focal length f1 of the first lens may be, for example, in the range of 5.89mm to 7.05mm, the effective focal length f2 of the second lens may be, for example, in the range of 10.58mm to 18.64mm, the effective focal length f3 of the third lens may be, for example, in the range of-12.39 mm to-6.29 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of-7.43 mm to-5.80 mm, and the effective focal length f6 of the sixth lens may be, for example, in the range of 10.30mm to 20.94 mm.
In an exemplary embodiment, the image pickup lens according to the present application further includes an aperture stop disposed between the object side and the first lens, and is operable to control a size of an imaging light beam of the image pickup lens. Optionally, the above-mentioned image pickup lens may further include a vignetting stop disposed between the third lens and the fourth lens, and may be used to improve the imaging quality of the image pickup lens. Optionally, the above-mentioned image pickup lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface. The application provides an imaging lens with the characteristics of large aperture, miniaturization, long focus, low temperature drift, high imaging quality and the like. The imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, the above six lenses. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the optical total length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the imaging lens is more beneficial to production and processing.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the scope of the application as claimed. For example, although six lenses are described as an example in the embodiment, the imaging lens is not limited to include six lenses. The camera lens may also include other numbers of lenses, if desired.
Specific examples of the imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the image capturing lens sequentially includes, from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 1 shows a basic parameter table of an imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In this example, the total effective focal length f of the imaging lens is 7.52mm, and the maximum field angle FOV of the imaging lens is 49.0 °.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical, and the surface profile 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 radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The following tables 2-1 and 2-2 show the higher order coefficients A4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24 and A 26 that can be used for each of the aspherical mirror faces S1-S12 in example 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -9.3044E-02 | -3.8516E-02 | -1.3229E-02 | -3.5844E-03 | -4.3765E-04 | 2.3227E-04 |
| S2 | 2.6104E-02 | -4.6046E-02 | 3.6241E-03 | 5.5601E-04 | 1.2324E-03 | 9.9562E-05 |
| S3 | -2.4704E-02 | -5.3577E-02 | 3.5362E-03 | 3.2119E-04 | 1.1660E-03 | 4.6409E-05 |
| S4 | -2.5286E-02 | -7.9086E-03 | 2.9078E-05 | -1.1376E-04 | 5.1507E-04 | -5.6808E-05 |
| S5 | 3.7369E-02 | 7.7762E-03 | -3.5334E-04 | -1.6356E-04 | 2.2647E-04 | 1.6651E-05 |
| S6 | 8.8066E-02 | -2.5514E-04 | 1.7036E-03 | -2.8559E-04 | 1.4292E-04 | 1.6931E-05 |
| S7 | -1.0468E-01 | -1.3121E-03 | 1.8364E-04 | -2.1150E-04 | 6.2162E-05 | 4.1897E-05 |
| S8 | -4.4539E-02 | 1.3890E-02 | 2.0186E-03 | -5.9551E-05 | 1.4746E-04 | 2.7710E-05 |
| S9 | -6.9865E-01 | 1.1396E-01 | -7.6154E-03 | 4.1756E-03 | 1.8108E-03 | 1.6658E-04 |
| S10 | -1.1505E+00 | 1.0447E-01 | -4.3658E-02 | 1.1172E-02 | -3.1809E-04 | 2.1529E-03 |
| S11 | -4.1138E-01 | 4.7311E-02 | 4.8047E-03 | 5.8759E-03 | -4.0729E-03 | -3.0614E-05 |
| S12 | -9.3044E-02 | -3.8516E-02 | -1.3229E-02 | -3.5844E-03 | -4.3765E-04 | 2.3227E-04 |
TABLE 2-1
TABLE 2-2
Fig. 2A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 1, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. Fig. 2D shows a magnification chromatic aberration curve of the imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration diagram of an imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the image capturing lens sequentially includes, from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 7.50mm, and the maximum field angle FOV of the imaging lens is 48.9 °.
Table 3 shows a basic parameter table of the imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 4-1, 4-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.
TABLE 3 Table 3
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -9.3044E-02 | -3.8516E-02 | -1.3229E-02 | -3.5844E-03 | -4.3765E-04 | 2.3227E-04 |
| S2 | 2.6104E-02 | -4.6046E-02 | 3.6241E-03 | 5.5601E-04 | 1.2324E-03 | 9.9562E-05 |
| S3 | -2.4704E-02 | -5.3577E-02 | 3.5362E-03 | 3.2119E-04 | 1.1660E-03 | 4.6409E-05 |
| S4 | -2.5286E-02 | -7.9086E-03 | 2.9078E-05 | -1.1376E-04 | 5.1507E-04 | -5.6808E-05 |
| S5 | 3.7369E-02 | 7.7762E-03 | -3.5334E-04 | -1.6356E-04 | 2.2647E-04 | 1.6651E-05 |
| S6 | 8.8066E-02 | -2.5514E-04 | 1.7036E-03 | -2.8559E-04 | 1.4292E-04 | 1.6931E-05 |
| S7 | -1.0468E-01 | -1.3121E-03 | 1.8364E-04 | -2.1150E-04 | 6.2162E-05 | 4.1897E-05 |
| S8 | -4.4539E-02 | 1.3890E-02 | 2.0186E-03 | -5.9551E-05 | 1.4746E-04 | 2.7710E-05 |
| S9 | -6.9865E-01 | 1.1396E-01 | -7.6154E-03 | 4.1756E-03 | 1.8108E-03 | 1.6658E-04 |
| S10 | -1.1505E+00 | 1.0447E-01 | -4.3658E-02 | 1.1172E-02 | -3.1809E-04 | 2.1529E-03 |
| S11 | -4.1138E-01 | 4.7311E-02 | 4.8047E-03 | 5.8759E-03 | -4.0729E-03 | -3.0614E-05 |
| S12 | -8.9264E-01 | 1.2929E-01 | -2.3672E-03 | 1.1781E-02 | -4.0537E-03 | -1.8702E-03 |
TABLE 4-1
TABLE 4-2
Fig. 4A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 2, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. Fig. 4D shows a magnification chromatic aberration curve of the imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the image capturing lens sequentially includes, from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 7.50mm, and the maximum field angle FOV of the imaging lens is 48.8 °.
Table 5 shows a basic parameter table of an imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 6-1, 6-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 5
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -7.7984E-02 | -3.5876E-02 | -1.4047E-02 | -4.5225E-03 | -1.0758E-03 | -9.8061E-05 |
| S2 | 2.1730E-02 | -4.5958E-02 | 2.6961E-03 | 4.6384E-05 | 3.4939E-04 | -1.0537E-05 |
| S3 | -2.8956E-02 | -5.3517E-02 | 3.7236E-03 | 7.3443E-04 | 2.6525E-04 | -1.4079E-04 |
| S4 | -1.6489E-02 | -7.1166E-03 | -1.0905E-04 | -3.2504E-04 | 2.2644E-04 | 1.7599E-04 |
| S5 | 3.9597E-02 | 8.2181E-03 | 8.6050E-05 | -5.3558E-05 | 4.3685E-05 | 1.2394E-05 |
| S6 | 8.1499E-02 | -8.4412E-04 | 1.7641E-03 | -1.7746E-04 | 1.4030E-04 | 2.3480E-06 |
| S7 | -1.0213E-01 | -1.7407E-03 | 4.3247E-05 | 1.5525E-05 | 4.5443E-05 | 2.5841E-05 |
| S8 | -4.2295E-02 | 1.3329E-02 | 1.9358E-03 | 2.9218E-04 | 5.5368E-05 | 2.3327E-05 |
| S9 | -7.4515E-01 | 9.3582E-02 | 4.5087E-03 | 1.0746E-02 | 1.9174E-03 | 2.5884E-04 |
| S10 | -1.1391E+00 | 1.0585E-01 | -4.4708E-02 | 1.3260E-02 | -5.5067E-03 | 1.8353E-03 |
| S11 | -3.6773E-01 | 4.2581E-02 | 4.1869E-03 | 7.1686E-03 | -4.9131E-03 | -1.5867E-04 |
| S12 | -9.0122E-01 | 1.2357E-01 | -5.3584E-04 | 1.1251E-02 | -3.9334E-03 | -1.5642E-03 |
TABLE 6-1
TABLE 6-2
Fig. 6A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. Fig. 6D shows a magnification chromatic aberration curve of the imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the image capturing lens sequentially includes, from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 7.60mm, and the maximum field angle FOV of the imaging lens is 48.3 °.
Table 7 shows a basic parameter table of an imaging lens of embodiment 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 8-1, 8-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 7
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 2.1767E+00 | 1.8382E+00 | 6.8948E-02 | -7.6632E-02 | -3.6876E-02 | -1.5542E-02 | -5.5423E-03 |
| S2 | 5.5569E+00 | 1.7499E+00 | 1.6911E+00 | 2.3300E-02 | -4.7088E-02 | 1.1601E-03 | -4.0577E-04 |
| S3 | 3.5386E+00 | 1.6362E+00 | 2.7132E+00 | -3.3552E-02 | -5.4896E-02 | 3.6166E-03 | 8.0703E-04 |
| S4 | 1.0563E+01 | 1.5525E+00 | -1.5389E+01 | -1.4235E-02 | -1.0619E-02 | 2.0091E-03 | -2.7378E-04 |
| S5 | 2.7033E+01 | 1.2635E+00 | 2.4609E+01 | 3.8697E-02 | 7.6098E-03 | 4.3155E-04 | -9.3124E-05 |
| S6 | 4.0830E+00 | 1.0817E+00 | -6.3485E+01 | 8.2463E-02 | -1.3333E-03 | 2.1264E-03 | -2.3916E-04 |
| S7 | -5.8500E+01 | 1.1096E+00 | -9.9000E+01 | -1.0015E-01 | 7.1466E-04 | -9.5114E-05 | 1.3102E-06 |
| S8 | 8.1111E+01 | 1.2918E+00 | 9.9000E+01 | -5.2851E-02 | 1.2634E-02 | 5.2312E-04 | 4.2317E-05 |
| S9 | 6.8164E+00 | 2.0330E+00 | -1.3675E+01 | -7.7500E-01 | 8.7858E-02 | 1.8206E-03 | 1.0770E-02 |
| S10 | 2.2339E+00 | 2.4523E+00 | -2.8626E+00 | -1.1406E+00 | 1.0189E-01 | -4.8205E-02 | 1.1617E-02 |
| S11 | 5.8324E+00 | 2.7302E+00 | -4.1883E+01 | -3.9003E-01 | 3.9239E-02 | 1.8715E-03 | 7.6396E-03 |
| S12 | 2.4084E+01 | 2.8358E+00 | -9.9000E+01 | -9.4772E-01 | 1.2626E-01 | -4.8747E-03 | 1.1901E-02 |
TABLE 8-1
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TABLE 8-2
Fig. 8A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 4, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 8B shows an astigmatism curve of the imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. Fig. 8D shows a magnification chromatic aberration curve of the imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration diagram of an imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the image capturing lens sequentially includes, from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 8.00mm, and the maximum field angle FOV of the imaging lens is 46.1 °.
Table 9 shows a basic parameter table of an imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 10-1, 10-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, where each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.
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TABLE 9
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -7.2827E-02 | -3.7085E-02 | -1.6946E-02 | -6.6425E-03 | -2.0389E-03 | -4.2984E-04 |
| S2 | 2.2172E-02 | -4.9483E-02 | -3.3182E-04 | -8.1236E-04 | 5.5192E-04 | -3.8851E-05 |
| S3 | -4.0229E-02 | -5.8861E-02 | 2.4648E-03 | 4.4492E-04 | 3.8290E-04 | -3.0878E-04 |
| S4 | -6.1698E-03 | -1.5849E-02 | 1.3821E-03 | -1.5205E-03 | -4.2754E-04 | 1.7080E-04 |
| S5 | 3.9952E-02 | 6.8972E-03 | 9.4406E-04 | -4.5807E-05 | -9.2697E-05 | -2.2336E-05 |
| S6 | 8.1198E-02 | -3.8896E-03 | 2.4372E-03 | -3.0079E-04 | 1.4477E-04 | -4.0670E-05 |
| S7 | -1.0384E-01 | 1.0147E-03 | -1.6229E-04 | 2.6391E-05 | -2.3524E-05 | -1.4556E-05 |
| S8 | -3.6573E-02 | 1.4414E-02 | 8.0189E-04 | 5.1792E-05 | -5.0532E-05 | 1.0243E-05 |
| S9 | -9.5347E-01 | 6.1644E-02 | -7.4038E-03 | 1.3070E-02 | 5.9817E-03 | 2.5240E-03 |
| S10 | -1.1900E+00 | 1.0075E-01 | -5.2301E-02 | 1.1783E-02 | -6.1555E-03 | 1.1810E-03 |
| S11 | -3.9693E-01 | 2.0140E-02 | -1.3741E-03 | 1.0731E-02 | -5.3637E-03 | -1.6945E-03 |
| S12 | -9.9973E-01 | 1.1926E-01 | -1.2719E-02 | 1.5565E-02 | -3.1390E-03 | -1.5641E-03 |
TABLE 10-1
TABLE 10-2
Fig. 10A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 5, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 10B shows an astigmatism curve of the imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. Fig. 10D shows a magnification chromatic aberration curve of the imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic configuration diagram of an imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the image capturing lens includes, in order from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 7.50mm, and the maximum field angle FOV of the imaging lens is 48.8 °.
Table 11 shows a basic parameter table of an imaging lens of embodiment 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 12-1, 12-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -6.6733E-02 | -3.6455E-02 | -1.6072E-02 | -5.9637E-03 | -1.7765E-03 | -3.4498E-04 |
| S2 | 3.3316E-02 | -4.7445E-02 | -6.6355E-04 | -5.4598E-04 | 2.7658E-04 | 1.2652E-04 |
| S3 | -5.0187E-02 | -4.5386E-02 | 5.8132E-03 | 8.8922E-04 | -4.0287E-05 | -5.5226E-05 |
| S4 | -1.0184E-02 | -1.2872E-02 | 2.9488E-03 | -1.4257E-03 | 2.5373E-04 | 6.2567E-04 |
| S5 | 4.1111E-02 | 7.2627E-03 | 4.7519E-04 | -2.6238E-04 | -1.4121E-04 | -8.0083E-06 |
| S6 | 7.7537E-02 | -2.5005E-03 | 1.8969E-03 | -4.2054E-04 | 8.1314E-05 | -4.4561E-05 |
| S7 | -1.0705E-01 | -6.4036E-04 | -1.2037E-04 | -4.0577E-06 | -1.3801E-05 | -5.1238E-06 |
| S8 | -7.4583E-02 | 9.8347E-03 | 1.3377E-03 | 2.6797E-04 | 4.2188E-05 | 1.5800E-05 |
| S9 | -9.2035E-01 | 7.2834E-02 | 1.0191E-02 | 1.3806E-02 | 2.4609E-03 | -3.9847E-05 |
| S10 | -1.2596E+00 | 8.0042E-02 | -4.3903E-02 | 8.8692E-03 | -5.0339E-03 | 9.3678E-04 |
| S11 | -4.4186E-01 | 3.5004E-02 | 2.6676E-03 | 1.2184E-02 | -4.1419E-03 | -9.3174E-04 |
| S12 | -8.7643E-01 | 1.2100E-01 | -5.3391E-03 | 1.5594E-02 | -6.0847E-03 | -2.4668E-03 |
TABLE 12-1
TABLE 12-2
Fig. 12A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. Fig. 12D shows a magnification chromatic aberration curve of the imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the imaging lens provided in embodiment 6 can achieve good imaging quality.
Example 7
An imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the image capturing lens includes, in order from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 8.20mm, and the maximum field angle FOV of the imaging lens is 45.1 °.
Table 13 shows a basic parameter table of an imaging lens of embodiment 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 14-1, 14-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.
TABLE 13
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -8.2435E-02 | -3.8988E-02 | -1.6758E-02 | -6.0573E-03 | -1.6734E-03 | -2.5668E-04 |
| S2 | 2.9109E-02 | -5.2520E-02 | 9.7862E-04 | -2.8376E-04 | 6.1022E-04 | 1.1191E-04 |
| S3 | -4.9243E-02 | -5.5068E-02 | 4.1150E-03 | 7.8292E-04 | 4.5736E-04 | 3.5112E-05 |
| S4 | -8.4616E-03 | -1.6621E-02 | 1.7901E-03 | -1.3931E-04 | 6.9257E-04 | 5.7067E-04 |
| S5 | 4.3288E-02 | 8.3836E-03 | 8.6977E-04 | -3.6171E-04 | -1.2079E-04 | -9.5669E-06 |
| S6 | 8.4746E-02 | -2.0807E-03 | 2.6327E-03 | -3.6550E-04 | 1.0981E-04 | -4.3384E-05 |
| S7 | -1.1111E-01 | 1.3539E-04 | 1.4155E-04 | -1.5602E-05 | -2.4083E-05 | -1.3100E-05 |
| S8 | -7.2700E-02 | 1.1585E-02 | 9.4516E-04 | 3.9139E-05 | -2.5808E-05 | 2.9753E-06 |
| S9 | -9.2638E-01 | 8.8979E-02 | 3.7639E-03 | 1.1606E-02 | 3.5917E-03 | 1.6545E-03 |
| S10 | -1.3037E+00 | 1.0401E-01 | -4.9584E-02 | 1.0313E-02 | -7.6769E-03 | 1.4616E-03 |
| S11 | -4.8333E-01 | 4.0107E-02 | 2.7768E-03 | 9.4754E-03 | -5.1156E-03 | -1.4154E-03 |
| S12 | -9.6660E-01 | 1.3380E-01 | -1.2005E-02 | 1.4044E-02 | -7.0951E-03 | -2.4312E-03 |
TABLE 14-1
TABLE 14-2
Fig. 14A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different angles of view. Fig. 14D shows a magnification chromatic aberration curve of the imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the imaging lens provided in embodiment 7 can achieve good imaging quality.
Example 8
An imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the image capturing lens includes, in order from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 7.50mm, and the maximum field angle FOV of the imaging lens is 48.8 °.
Table 15 shows a basic parameter table of an imaging lens of embodiment 8, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 16-1, 16-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.
TABLE 15
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -6.8098E-02 | -3.6572E-02 | -1.5913E-02 | -5.8109E-03 | -1.6810E-03 | -2.9817E-04 |
| S2 | 3.2523E-02 | -4.7680E-02 | -1.4300E-04 | -4.5993E-04 | 3.1526E-04 | 1.2898E-04 |
| S3 | -4.9588E-02 | -4.6001E-02 | 5.6939E-03 | 7.9878E-04 | -1.8136E-05 | -4.8885E-05 |
| S4 | -1.0130E-02 | -1.3171E-02 | 2.3105E-03 | -1.4717E-03 | 2.9999E-04 | 6.1769E-04 |
| S5 | 4.0725E-02 | 7.2660E-03 | 4.8467E-04 | -3.3799E-04 | -1.4685E-04 | -1.0907E-05 |
| S6 | 7.7616E-02 | -2.3510E-03 | 1.9746E-03 | -4.1062E-04 | 8.0473E-05 | -4.3468E-05 |
| S7 | -1.0596E-01 | -6.3979E-04 | -8.8038E-05 | -5.4149E-06 | -1.4946E-05 | -5.9956E-06 |
| S8 | -7.3920E-02 | 9.7624E-03 | 1.2399E-03 | 2.3502E-04 | 3.1944E-05 | 1.3966E-05 |
| S9 | -9.1163E-01 | 7.3783E-02 | 1.0037E-02 | 1.3537E-02 | 2.3876E-03 | 4.7222E-05 |
| S10 | -1.2511E+00 | 8.1103E-02 | -4.4226E-02 | 8.9115E-03 | -5.3481E-03 | 8.7388E-04 |
| S11 | -4.5205E-01 | 3.5522E-02 | 2.6192E-03 | 1.1462E-02 | -4.2840E-03 | -1.0954E-03 |
| S12 | -8.8985E-01 | 1.1968E-01 | -6.3221E-03 | 1.4280E-02 | -6.2259E-03 | -2.6810E-03 |
TABLE 16-1
TABLE 16-2
Fig. 16A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 8, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 16B shows an astigmatism curve of the imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different angles of view. Fig. 16D shows a magnification chromatic aberration curve of the imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the imaging lens provided in embodiment 8 can achieve good imaging quality.
Example 9
An imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 shows a schematic configuration diagram of an imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the image capturing lens includes, in order from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, a third lens E3, a vignetting stop ST, a fourth lens E4, a fifth lens E5, a sixth lens E6, an optical filter E7, and an imaging surface S15.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 7.42mm, and the maximum field angle FOV of the imaging lens is 49.3 °.
Table 17 shows a basic parameter table of an imaging lens of embodiment 9, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 18-1, 18-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 17
| Face number | A4 | A6 | A8 | A10 | A12 | A14 |
| S1 | -6.3602E-02 | -3.5641E-02 | -1.6048E-02 | -6.0965E-03 | -1.8754E-03 | -3.9164E-04 |
| S2 | 3.5071E-02 | -4.6072E-02 | -1.8869E-03 | -5.9798E-04 | 2.7603E-04 | 1.5047E-04 |
| S3 | -5.0957E-02 | -4.3206E-02 | 5.6499E-03 | 1.1264E-03 | 1.2870E-05 | -3.1505E-05 |
| S4 | -1.0405E-02 | -1.1786E-02 | 4.1366E-03 | -1.0055E-03 | 2.0389E-04 | 5.6993E-04 |
| S5 | 4.2365E-02 | 6.8776E-03 | 3.8670E-04 | -9.7434E-05 | -1.2032E-04 | -1.1087E-06 |
| S6 | 7.7146E-02 | -2.5729E-03 | 1.6425E-03 | -4.0837E-04 | 7.7403E-05 | -4.4154E-05 |
| S7 | -1.0769E-01 | -6.6936E-04 | -2.1774E-04 | -3.2657E-06 | -1.2579E-05 | -4.2844E-06 |
| S8 | -7.5452E-02 | 9.7421E-03 | 1.4368E-03 | 3.2572E-04 | 5.7584E-05 | 1.8874E-05 |
| S9 | -9.2612E-01 | 7.1281E-02 | 1.0046E-02 | 1.3914E-02 | 2.5058E-03 | -9.2281E-05 |
| S10 | -1.2529E+00 | 7.8481E-02 | -4.3258E-02 | 8.5952E-03 | -4.6443E-03 | 9.3818E-04 |
| S11 | -4.1198E-01 | 3.3949E-02 | 2.0462E-03 | 1.3009E-02 | -3.8967E-03 | -5.8928E-04 |
| S12 | -8.3464E-01 | 1.2162E-01 | -4.9728E-03 | 1.7495E-02 | -5.6424E-03 | -1.9287E-03 |
TABLE 18-1
/>
TABLE 18-2
Fig. 18A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 9, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 18B shows an astigmatism curve of the imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different angles of view. Fig. 18D shows a magnification chromatic aberration curve of the imaging lens of embodiment 9, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18D, the imaging lens provided in embodiment 9 can achieve good imaging quality.
In summary, examples 1 to 9 each satisfy the relationship shown in table 19.
TABLE 19
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the above-described imaging lens.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (20)
1. The imaging lens is characterized by comprising, in order from an object side to an image side along an optical axis:
A first lens having positive optical power;
A second lens having positive optical power;
a third lens having negative optical power;
A fourth lens having optical power;
a fifth lens having negative optical power; and
A sixth lens having positive optical power;
The number of lenses with focal power in the imaging lens is six;
The distance TTL from the object side surface of the first lens to the imaging surface of the imaging lens on the optical axis and the maximum field angle FOV of the imaging lens satisfy: 6mm is less than or equal to TTL/Tan (FOV) < 8.0 mm;
The total effective focal length f of the imaging lens, the curvature radius R1 of the object side surface of the first lens, and the curvature radius R2 of the image side surface of the first lens satisfy: f/(R2-R1) < 2.0 < 2.5;
The total effective focal length f of the imaging lens and the effective focal length f1 of the first lens satisfy: f/f1 is more than 1.0 and less than or equal to 1.3; and
The abbe number V1 of the first lens and the abbe number V2 of the second lens satisfy: 70 < (V1+V2)/2 < 90.
2. The imaging lens according to claim 1, wherein a center thickness CT1 of the first lens, a center thickness CT2 of the second lens, a refractive index N1 of the first lens, and a refractive index N2 of the second lens satisfy: 1.0 mm < (CT 1-CT 2)/(N1-N2) < 4.0 mm.
3. The imaging lens according to claim 1, wherein a center thickness CT1 of the first lens and a refractive index N1 of the first lens satisfy: 1.6 The mm is less than or equal to CT 1/(N1-1) and less than or equal to 2.0 mm.
4. The imaging lens according to claim 1, wherein a center thickness CT2 of the second lens and a refractive index N2 of the second lens satisfy: 1.0 mm < CT 2/(N2X (N2-1)) < 1.3 mm.
5. The imaging lens according to claim 1, wherein an air interval T45 of the fourth lens and the fifth lens on the optical axis and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy: T45/T56 is less than or equal to 2.0 and less than 3.5.
6. The imaging lens according to claim 1, wherein a center thickness CT3 of the third lens, an air interval T23 of the second lens and the third lens on the optical axis, and an air interval T34 of the third lens and the fourth lens on the optical axis satisfy: CT 3/(T34-T23) < 1.5 < 4.2.
7. The imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens, a center thickness CT6 of the sixth lens, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy: 1.5 < (CT5+CT6)/T56 is less than or equal to 4.2.
8. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens, a center thickness CT1 of the first lens, and a center thickness CT2 of the second lens satisfy: f/(CT1+CT2) is not less than 4.5 and not more than 5.0.
9. The imaging lens according to claim 1, wherein a radius of curvature R3 of an object side surface of the second lens and a radius of curvature R4 of an image side surface of the second lens satisfy: R4/R3 is more than 1.5 and less than 4.0.
10. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens, a radius of curvature R9 of an object side surface of the fifth lens, and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 1.0 < f/(R9-R10) < 2.0.
11. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens and an effective focal length f4 of the fourth lens satisfy: f/|f4| is less than or equal to 0.15.
12. The imaging lens according to claim 1, wherein an effective focal length f3 of the third lens and an effective focal length f5 of the fifth lens satisfy: f3/f5 is more than or equal to 1.0 and less than 2.0.
13. The imaging lens according to claim 1, wherein an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, and an effective focal length f6 of the sixth lens satisfy: the ratio of (f2+f6)/f 1 is less than or equal to 3.5 and less than 6.0.
14. The imaging lens according to any one of claims 1 to 13, wherein a total effective focal length f of the imaging lens and a half of a diagonal length ImgH of an effective pixel region on an imaging surface of the imaging lens satisfy: f/ImgH is more than 2.0 and less than 2.5.
15. The imaging lens according to any one of claims 1 to 13, wherein an entrance pupil diameter EPD of the imaging lens satisfies: 3.9 mm.ltoreq.EPD.times.tan (FOV) < 4.5 mm.
16. The imaging lens according to claim 1, wherein a center thickness CT1 of the first lens, a center thickness CT2 of the second lens, a refractive index N1 of the first lens, and a refractive index N2 of the second lens satisfy: 1.3 The (CT 1-CT 2)/(N1-N2) is less than or equal to 3.6 mm.
17. The imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens, a center thickness CT6 of the sixth lens, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy: 1.5 < (CT5+CT6)/T56 is less than or equal to 3.0.
18. The imaging lens according to claim 1, wherein a radius of curvature R3 of an object side surface of the second lens and a radius of curvature R4 of an image side surface of the second lens satisfy: R4/R3 is more than 1.5 and less than 2.0.
19. The imaging lens according to claim 1, wherein an effective focal length f3 of the third lens and an effective focal length f5 of the fifth lens satisfy: f3/f5 is more than or equal to 1.0 and less than or equal to 1.7.
20. The imaging lens according to claim 1, wherein an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, and an effective focal length f6 of the sixth lens satisfy: (f2+f6)/f1 is more than or equal to 3.5 and less than or equal to 4.0.
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|---|---|---|---|---|
| CN107817575A (en) * | 2016-09-12 | 2018-03-20 | 三星电机株式会社 | Optical imaging system |
| CN107817594A (en) * | 2016-09-12 | 2018-03-20 | 三星电机株式会社 | Optical imaging system |
| CN208076812U (en) * | 2017-12-11 | 2018-11-09 | 浙江舜宇光学有限公司 | Imaging lens |
| CN111158111A (en) * | 2020-02-21 | 2020-05-15 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN111158116A (en) * | 2020-02-24 | 2020-05-15 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN111158123A (en) * | 2020-03-12 | 2020-05-15 | 浙江舜宇光学有限公司 | Image pickup lens assembly |
| CN111983786A (en) * | 2020-09-11 | 2020-11-24 | 南昌欧菲精密光学制品有限公司 | Optical imaging system, image capturing module and electronic device |
| CN113741006A (en) * | 2021-08-24 | 2021-12-03 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
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| CN109031600B (en) * | 2018-08-14 | 2021-03-23 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817575A (en) * | 2016-09-12 | 2018-03-20 | 三星电机株式会社 | Optical imaging system |
| CN107817594A (en) * | 2016-09-12 | 2018-03-20 | 三星电机株式会社 | Optical imaging system |
| CN208076812U (en) * | 2017-12-11 | 2018-11-09 | 浙江舜宇光学有限公司 | Imaging lens |
| CN111158111A (en) * | 2020-02-21 | 2020-05-15 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN111158116A (en) * | 2020-02-24 | 2020-05-15 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN111158123A (en) * | 2020-03-12 | 2020-05-15 | 浙江舜宇光学有限公司 | Image pickup lens assembly |
| CN111983786A (en) * | 2020-09-11 | 2020-11-24 | 南昌欧菲精密光学制品有限公司 | Optical imaging system, image capturing module and electronic device |
| CN113741006A (en) * | 2021-08-24 | 2021-12-03 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
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| CN114428389A (en) | 2022-05-03 |
| CN114326033A (en) | 2022-04-12 |
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