CN112130280B - Lens group, camera module and electronic device - Google Patents
Lens group, camera module and electronic device Download PDFInfo
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- CN112130280B CN112130280B CN202011027182.3A CN202011027182A CN112130280B CN 112130280 B CN112130280 B CN 112130280B CN 202011027182 A CN202011027182 A CN 202011027182A CN 112130280 B CN112130280 B CN 112130280B
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- 238000003384 imaging method Methods 0.000 description 25
- 230000004075 alteration Effects 0.000 description 23
- 201000009310 astigmatism Diseases 0.000 description 21
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/146—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having more than five groups
- G02B15/1461—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having more than five groups the first group being positive
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Abstract
The application discloses a lens group, a camera module and an electronic device. The lens group includes, in order from an object side to an image side, a first lens having a positive refractive power, a second lens having a refractive power, a third lens having a refractive power, a fourth lens having a refractive power, a fifth lens having a refractive power, a sixth lens having a refractive power, and a seventh lens having a negative refractive power, and satisfies the following relationship: 1.0 +/-Tn _zoom1/Tn _ zoom2, wherein Tn _ zoom1 is an air separation distance between two adjacent lenses when the lens group shoots an object under an infinite condition, and Tn _ zoom2 is an air separation distance between two adjacent lenses when the lens group shoots an object under a macro condition. So set up, can change the air spacing distance between two adjacent lens of lens group when shooting the object under the infinity condition and the microspur condition to make the effective focal length of lens group can change, thereby make the higher image of quality of lens group homoenergetic shooting under the different situation, promote user's experience.
Description
Technical Field
The present disclosure relates to optical imaging technologies, and particularly to a lens assembly, a camera module and an electronic device.
Background
Currently, single lenses of mainstream mobile phones are fixed-focus lenses, which are driven by a motor to focus so as to realize clear imaging of objects from far to near.
However, the existing single lens has a large macro distance and low imaging performance, and particularly, in an edge field, the center may be clear and the edge may be blurred, thereby reducing the user experience.
Disclosure of Invention
The embodiment of the application provides a lens group, a camera module and an electronic device.
The lens group according to the embodiment of the present application includes, in order from an object side to an image side, a first lens having a positive refractive power, a second lens having a refractive power, a third lens having a refractive power, a fourth lens having a refractive power, a fifth lens having a refractive power, a sixth lens having a refractive power, and a seventh lens having a negative refractive power, and satisfies the following relation: tn _ zoom1/Tn _ zoom2<1.0, where Tn _ zoom1 is an air separation distance between two adjacent lenses when the lens group photographs an object in an infinite condition, and Tn _ zoom2 is an air separation distance between two adjacent lenses when the lens group photographs an object in a macro condition.
The camera module according to the embodiment of the present application includes the lens assembly according to the above embodiment and a photosensitive element disposed at an image side of the lens assembly.
The electronic device of the embodiment of the application comprises a shell and the camera module, wherein the camera module is installed on the shell.
In the lens group, camera module and electron device of this application embodiment, through reasonable lens configuration, can change the air space distance between two adjacent lenses of lens group when shooting the object under the infinity condition and the microspur condition to make the effective focal length of lens group under the condition of shooting the object under the infinity condition and the microspur condition can change, thereby make the lens group homoenergetic shoot the higher image of quality under the different situation, promote user's experience.
Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a lens group according to a first embodiment of the present application;
fig. 2 is another schematic structural diagram of a lens group according to a first embodiment of the present application;
fig. 3 is a longitudinal spherical aberration diagram (mm) of the lens group according to the first embodiment of the present application;
fig. 4 is an astigmatism (mm) diagram of a lens group according to a first embodiment of the present application;
fig. 5 is a (%) showing a distortion of the lens group according to the first embodiment of the present application;
FIG. 6 is a schematic view of a lens assembly according to a second embodiment of the present application;
FIG. 7 is a schematic view of another structure of the lens group according to the second embodiment of the present application;
fig. 8 is a longitudinal spherical aberration diagram (mm) of the lens group of the second embodiment of the present application;
fig. 9 is an astigmatism diagram (mm) of the lens group according to the second embodiment of the present application;
fig. 10 is a distortion diagram (%) of the lens group according to the second embodiment of the present application;
fig. 11 is a schematic structural diagram of a lens group according to a third embodiment of the present application;
fig. 12 is another schematic structural diagram of a lens group according to a third embodiment of the present application;
fig. 13 is a longitudinal spherical aberration diagram (mm) of the lens group of the third embodiment of the present application;
fig. 14 is an astigmatism diagram (mm) of the lens group according to the third embodiment of the present application;
fig. 15 is a distortion diagram (%) of the lens group of the third embodiment of the present application;
fig. 16 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure;
fig. 17 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 18 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
The lens group 10 according to the present embodiment includes, from the object side to the image side, a first lens L1 having a positive refractive index, a second lens L2 having a refractive index, a third lens L3 having a refractive index, a fourth lens L4 having a refractive index, a fifth lens L5 having a refractive index, a sixth lens L6 having a refractive index, and a seventh lens L7 having a negative refractive index.
The first lens L1 has an object-side surface S1 and an image-side surface S2. The second lens element L2 has an object-side surface S3 and an image-side surface S4, the object-side surface S3 of the second lens element L2 is convex, and the image-side surface S4 of the second lens element L2 is concave. The third lens element L3 has an object-side surface S5 and an image-side surface S6, and the object-side surface S5 of the third lens element L3 is convex. The fourth lens L4 has an object-side surface S7 and an image-side surface S8. The fifth lens L5 has an object-side surface S9 and an image-side surface S10. The sixth lens L6 has an object-side surface S11 and an image-side surface S12. The seventh lens L7 has an object-side surface S13 and an image-side surface S14.
In some embodiments, the lens group 10 further includes an aperture stop and an infrared filter L8. The aperture stop may be disposed on a surface of any one of the lenses, or disposed in front of the first lens L1, or disposed between any two of the lenses, and a specific position of the aperture stop may be specifically set according to an actual situation, which is not limited herein. The infrared filter L8 is located between the seventh lens L7 and the photosensitive element. The infrared filter L8 includes an object-side surface S13 and an image-side surface S14.
When the lens group 10 is used for imaging, light rays emitted or reflected by a subject enter the lens group 10 from the object side direction, pass through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7, and finally converge on the image plane S17.
In some embodiments, the lens group 10 satisfies the following relationship:
Tn_zoom1/Tn_zoom2<1.0；
wherein, tn _ zoom1 is an air spacing distance between two adjacent lenses when the lens group shoots an object under an infinite condition, and Tn _ zoom2 is an air spacing distance between two adjacent lenses when the lens group shoots an object under a macro condition.
That is, tn _ zoom1/Tn _ zoom2<1.0 may be any value greater than 1, for example, 1.1, 1.2, 1.25, 1.3, 1.35, 1.4, 1.5, 1.6, 1.65, 1.7, 1.8, 1.9, 2.0, 2.2, 2.5, 2.6, 2.8, 2.9, 3.0, etc.
Under the condition that the above relation is satisfied, the air spacing distance between two adjacent lenses when the lens group 10 shoots an object under the infinite distance condition and the macro distance condition can be changed, so that the effective focal length of the lens group 10 can be changed under the condition of shooting the object under the infinite distance condition and the macro distance condition, and thus, the lens group 10 can shoot images with higher quality under different conditions, and the user experience is improved.
In the embodiment of the present application, the lens group 10 satisfies the following relational expression:
1.0<T4_zoom1/T4_zoom2；
where T4_ zoom1 is an air separation distance between the fourth lens L4 and the fifth lens L5 when the lens group 10 photographs an object in an infinite distance condition, and T4_ zoom2 is an air separation distance between the fourth lens L4 and the fifth lens L5 when the lens group 10 photographs an object in a macro distance condition.
That is, T4_ zoom1/T4_ zoom2 may be any value greater than 1, for example, 1.1, 1.2, 1.25, 1.3, 1.35, 1.4, 1.5, 1.6, 1.65, 1.7, 1.8, 1.9, 2.0, 2.2, 2.5, 2.6, 2.8, 2.9, 3.0, etc.
Under the condition of satisfying the above relational expression, make fourth lens L4 and fifth lens L5 have sufficient space when the equipment, avoid the condition of bumping between two adjacent lenses, guaranteed the normal use of lens group 10 to, be favorable to the thin line of lens group 10, also can avoid appearing because numerical value undersize leads to assembling the condition that is difficult at the same time, increase optical system's sensitivity.
In addition, with such an arrangement, the air separation distance between two adjacent lenses of the lens group 10 can be changed when the object under the infinite distance condition and the object under the macro distance condition is photographed, so that the effective focal length of the lens group 10 is changed when the object under the infinite distance condition and the object under the macro distance condition is photographed, and thus the lens group 10 can photograph high-quality images under different conditions, and user experience is improved.
As can be seen from the above, in the present embodiment, the effective focal length of the lens group 10 is changed by changing the air separation distance between the adjacent two lenses when the fourth lens L4 and the fifth lens L5 photograph the object under the infinite distance condition and the macro distance condition. It is to be understood that in other embodiments, the air separation distance between the adjacent two lenses may be changed, for example, the air separation distance between the adjacent two lenses when the first lens L1 and the second lens L2 shoot an object under an infinite distance condition and a macro condition, or the air separation distance between the adjacent two lenses when the second lens L2 and the third lens L3 shoot an object under an infinite distance condition and a macro condition, or the air separation distance between the adjacent two lenses when the third lens L3 and the fourth lens L4 shoot an object under an infinite distance condition and a macro condition, or the air separation distance between the adjacent two lenses when the fifth lens L5 and the sixth lens L6 shoot an object under an infinite distance condition and a macro condition, or the air separation distance between the adjacent two lenses when the sixth lens L6 and the seventh lens L7 shoot an object under an infinite distance condition and a macro condition may be changed, and the specific setting manner may be selected according to actual conditions without limitation.
Further, in the embodiment of the present application, the lens group 10 satisfies the following relational expression: fno <2.0, TTL/ih <1.5, 70.0 degrees < view angle omega <90 degrees, 0 yarn-over TTL_zoom 1/TTL _ zoom2<1.0;
wherein Fno is an f-number of the lens group 10, TTL is an optical total length of the lens group 10, ih is a height of an image plane S17 of the lens group 10, TTL _ zoom1 is an optical total length of the lens group 10 when the lens group 10 photographs an object at infinity, and TTL _ zoom2 is an optical total length of the lens group 10 when the lens group photographs an object at macro.
That is, fno can be any value less than 3, for example, 1.8, 1.6, 1.4, 1.2, 1.1, 1, 0.8, 0.6, 0.5, 0.4, 0.3, 0.1, 0, -0.2, -0.4, -0.5, -0.8, etc.
TTL/ih can be any value less than 1.5, for example, 1.4, 1.3, 1.2, 1.1, 1, 0.8, 0.6, 0.5, 0.4, 0.3, 0.1, 0, -0.2, -0.4, -0.5, -0.8, etc.
The angle of view ω may be any value in the interval (70.0 °,90.0 °), and for example, the value may be 71.0 °, 72.0 °, 73.0 °, 74.0 °, 75.0 °, 76.0 °, 77.0 °, 78.0 °, 79.0 °, 80.0 °, 82.0 °, 84.0 °, 89.0 °, or the like.
TTL _ zoom1/TTL _ zoom2 is an arbitrary value in the interval (0, 1.0), and may be, for example, 0.1, 0.2, 0.3, 0.4, 0.45, 0.5, 0.6, 0.7, 0.8, 0.85, 0.9, 0.95, 0.96, 0.97, 0.98, 0.99, etc.
Under the condition of satisfying the above relational expression, the optical total length of the lens group 10 can be changed when the object is photographed under the infinite distance condition and the macro distance condition, so that the lens group 10 can photograph an image with higher quality under different conditions, and the user experience is improved.
In particular, in this document, "photographing an object in an infinite condition" may be understood as photographing an object having a long distance, and in such a condition, the light rays entering the lens group 10 are parallel light rays. "shooting an object in macro conditions" may be understood as shooting an object at a relatively short distance, i.e. macro shooting, for example, shooting an object at a distance of 200mm or even less than 200 mm.
In some embodiments, the lens group 10 satisfies the following relationship:
1.0<f_zoom1/f_zoom2；
wherein f _ zoom1 is an effective focal length of the lens group 10 when photographing an object at infinity, and f _ zoom2 is an effective focal length of the lens group 10 when photographing an object at macro.
That is, f _ zoom1/f _ zoom2 may be any value greater than 1.0, for example, the value may be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.5, 2.6, 2.8, 2.9, 3.0, or the like.
Under the condition that satisfies above-mentioned relational expression, can be through changing effective focal length when lens group 10 shoots the object under the infinity condition and when shooting the object under the macro condition for lens group 10 still can the high definition formation of image under the different circumstances, has promoted the formation of image quality of lens group 10.
In some embodiments, the lens group 10 satisfies the following relationship:
1.0<∣f2∣/f；
wherein f2 is the effective focal length of the second lens element, and f is the effective focal length of the lens assembly 10.
That is, | f2 |/f may be any value greater than 1.0, for example, the value may be 1.1, 1.2, 1.25, 1.3, 1.35, 1.4, 1.5, 1.6, 1.65, 1.7, 1.8, 1.9, 2.0, 2.2, 2.5, 2.6, 2.8, 2.9, 3.0, etc.
Under the condition of satisfying the above relation, the effective focal length of the lens assembly 10 can be adjusted to improve the imaging quality of the lens assembly 10, which is beneficial for the user to use.
In some embodiments, the lens group 10 satisfies the following relationship:
0<(T4/f)*100<50；
wherein T4 is an air separation distance between the fourth lens element L4 and the fifth lens element L5, and f is an effective focal length of the lens assembly 10.
That is, (T4/f) × 100 may be any value in the interval (0, 5), for example, the value may be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16, 18, 20, 25, 29, 30, 31, 32, 36, 38, 45, 46, 49, 49.5, etc.
Under the condition of satisfying the above relation, the effective focal length of the lens group 10 is good, which is beneficial to improving the imaging quality of the lens group 10 and improving the user experience.
In some embodiments, the lens group 10 satisfies the following relationship:
0<R2/R5<10；
where R2 is a lens curvature of the image-side surface S2 of the first lens element L1, and R5 is a lens curvature of the object-side surface S5 of the third lens element L3.
That is, R2/R5 may be any value in the interval (0, 10), for example, the value may be 1, 1.5, 1.8, 1.9, 2, 2.2, 2.5, 2.6, 2.9, 3, 3.5, 3.8, 4.2, 5, 5.2, 5.9, 6.5, 8, 9, etc.
Under the condition of satisfying the above relation, the lens curvature of the lens assembly 10 can be adjusted to ensure the processing feasibility of the lens assembly 10, which is beneficial to the production of the lens assembly 10, and the spherical aberration and astigmatism can be effectively corrected to improve the imaging quality of the lens assembly 10.
In some embodiments, the lens group 10 satisfies the following relationship:
-10<R3/R7<10；
where R3 is a lens curvature of the object-side surface S3 of the second lens element L2, and R7 is a lens curvature of the object-side surface S7 of the fourth lens element L4.
That is, R3/R7 may have any value in the (-10, 10) interval, for example, it may have a value of-9, -8, -7, -6, -5, -4, -3, -2, -1, 1.5, 1.8, 1.9, 2, 2.2, 2.5, 2.6, 2.9, 3, 3.5, 3.8, 4.2, 5, 5.2, 5.9, 6.5, 7, 7.5, 8, 8.5, 9, etc.
Under the condition of satisfying the above relation, the lens curvature of the lens assembly 10 can be adjusted to ensure the processing feasibility of the lens assembly 10, which is beneficial to the production of the lens assembly 10, and the spherical aberration and astigmatism can be effectively corrected to improve the imaging quality of the lens assembly 10.
In some embodiments, the lens group 10 satisfies the following relationship:
0<R5/T3<100；
wherein R5 is a curvature of the object-side surface S5 of the third lens element L3, and T3 is an air separation distance between the third lens element L3 and the fourth lens element L4.
That is, R5/T3 may be any value in the interval (0, 100), for example, the value may be 1, 10, 20, 30, 40, 45, 56, 62, 68, 70, 75, 76, 78, 82, 85, 86, 93, 98, 99, or the like.
Under the condition of satisfying the above relation, the effective focal length of the lens group 10 is good, which is beneficial to improving the imaging quality of the lens group 10 and improving the user experience.
In some embodiments, the lens group 10 satisfies the following relationship:
-20<(R7/T2)/100<20；
wherein R7 is a curvature of the object-side surface S7 of the fourth lens element L4, and T2 is an air separation distance between the second lens element L2 and the third lens element L3.
That is, R7/T2/100 can be any value in the (-20, 20) interval, for example, it can be-19, -18, -17, -16, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16, 18, 19, 19.9, etc.
Under the condition of satisfying the above relation, the lens curvature of the lens assembly 10 can be adjusted to ensure the processing feasibility of the lens assembly 10, which is beneficial to the production of the lens assembly 10, and the spherical aberration and astigmatism can be effectively corrected to improve the imaging quality of the lens assembly 10.
In some embodiments, the lens group 10 satisfies the following relationship:
0<R7/(T3-T2)；
wherein R7 is a curvature of the object-side surface S7 of the fourth lens L4, T3 is an air separation distance between the third lens L3 and the fourth lens L4, and T2 is an air separation distance between the second lens L2 and the third lens L3
That is, R7/(T3-T2) may be any value greater than 0, and for example, the value may be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 18, 20, 25, 26, 27, 34, 36, 38, 40, 50, or the like.
Under the condition of satisfying the above relation, the lens curvature of the lens assembly 10 can be adjusted to ensure the processing feasibility of the lens assembly 10, which is beneficial to the production of the lens assembly 10, and the spherical aberration and astigmatism can be effectively corrected to improve the imaging quality of the lens assembly 10.
In some embodiments, the lens group 10 satisfies the following relationship:
R10/f<0；
wherein R10 is a curvature of the image-side surface S10 of the fifth lens element L4, and f is an effective focal length of the lens assembly 10.
That is, R10/f can be any value less than 0, for example, the value can be-1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -12, -15, -18, 25, 26, 29, -35, etc.
Under the condition of satisfying the above relation, the effective focal length of the lens group 10 is made better, thereby improving the imaging quality of the lens group 10.
In some embodiments, the lens group 10 satisfies the following relationship:
-20<R3/f<20；
wherein, R3 is a curvature of the object-side surface S3 of the second lens element L2, and f is an effective focal length of the lens assembly 10.
That is, R3/f can be any value in the range (-10, 10), for example, the value can be-9, -8, -7, -6, -5, -4, -3.5, -3, -2.5, -2, -1, -0.5, 0.2, 0.9, 1, 2, 3, 3.5, 3.8, 4.2, 4.5, 4.9, 5.5, 5.9, 6.5, 6.8, 7.5, 7.9, 8.5, 8.8, 9.7, 9.9, etc.
Under the condition of satisfying the above relation, the effective focal length of the lens group 10 is made better, thereby improving the imaging quality of the lens group 10.
In some embodiments, the lens group 10 satisfies the following relationship:
0<(R2/T1)/100<20；
wherein R2 is a curvature of the image-side surface S2 of the first lens element L1, and T2 is an air separation distance between the first lens element L1 and the second lens element L2.
That is, the value of (R2/T1)/100 may be any value in the interval (0, 20), for example, 1, 1.5, 1.6, 1.8, 1.9, 2, 2.1, 2.5, 2.6, 2.8, 3.2, 3.6, 3.9, 4.2, 4.6, 4.9, 5.3, 5.6, 5.9, 6.2, 6.5, 6.9, 7, 8, 9, 12, 13, 15, 16, 18, 19, 19.5, 19.9, etc.
Under the condition of satisfying the above relation, the lens curvature of the lens group 10 can be adjusted to ensure the processing feasibility of the lens group 10, which is beneficial to the production of the lens group 10, and the spherical aberration and astigmatism can be effectively corrected to improve the imaging quality of the lens group 10.
In some embodiments, the lens group 10 satisfies the following relationship:
-20<(D4/f4)*100<20；
wherein D4 is a thickness of the fourth lens element, and f4 is an effective focal length of the fourth lens element.
That is, (D4/f 4) × 100 may be any value in the (-20, 10) interval, for example, this value may be-19, -18, -17, -16, -15, -14, -10, -9, -8, -6, -5, -4, -2, -1, 1.5, 1.6, 1.8, 1.9, 2, 2.1, 2.5, 2.6, 2.8, 3.2, 3.6, 3.9, 4.2, 4.6, 4.9, 5.3, 5.6, 5.9, 6.2, 6.5, 6.9, 7, 7.5, 8, 8.5, 9, 9.8, etc.
Under the condition of satisfying the above relation, the lens curvature of the lens assembly 10 can be adjusted by adjusting the lens thickness and the effective focal length of the fourth lens element L4, so as to ensure the processing feasibility of the lens assembly 10, facilitate the production of the lens assembly 10, effectively correct the spherical aberration and astigmatism, and improve the imaging quality of the lens assembly 10.
In some embodiments, the lens group 10 satisfies the following relationship:
0<D4/f*100<20；
wherein D4 is a thickness of the fourth lens element L4, and f is an effective focal length of the lens assembly 10.
That is, D4/f 100 may be any value in the interval (0, 20), for example, the value may be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16, 18, 19, 19.5, etc.
Under the condition of satisfying the above relation, the effective focal length of the lens assembly 10 can be adjusted to adjust the spherical aberration of the lens assembly 10, so as to achieve the balance of the spherical aberration of the lens assembly 10, and further improve the imaging quality of the lens assembly 10.
In the present embodiment, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all made of plastic.
Therefore, the first lens element L1 to the sixth lens element L7 are all plastic lenses, and the lens assembly 10 can be ultra-thin while effectively eliminating aberration and satisfying high pixel requirements, and has a low cost.
Of course, it is understood that in other embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be glass lenses, and may be selected according to actual circumstances, and the material of the lenses is not limited herein.
In the present embodiment, the infrared filter L8 is made of glass, such as blue glass. Of course, in other embodiments, the infrared filter L8 may be made of other materials. The infrared ray filtering device can be specifically set according to actual conditions, is not limited, and only needs to be capable of filtering infrared rays.
In the present embodiment, the object-side surface S1 and the image-side surface S2 of the first lens L1 are aspheric, the object-side surface S3 and the image-side surface S4 of the second lens L2 are aspheric, the object-side surface S5 and the image-side surface S6 of the third lens L3 are aspheric, the object-side surface S7 and the image-side surface S8 of the fourth lens L4 are aspheric, the object-side surface S9 and the image-side surface S10 of the fifth lens L5 are aspheric, the object-side surface S11 and the image-side surface S12 of the sixth lens L6 are aspheric, and the object-side surface S13 and the image-side surface S14 of the infrared filter L8 are spherical.
That is, in the present embodiment, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspheric lenses, and the infrared filter L8 is a spherical surface.
It is understood that, in other embodiments, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 may also be spherical mirrors, or at least one of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be a spherical mirror, and a specific type may be selected according to actual circumstances, which is not limited herein.
Further, the aspheric surface has a surface shape determined by the following formula:
where Z is the longitudinal distance between any point on the aspheric surface and the vertex of the surface, R is the distance from any point on the aspheric surface to the optical axis, c is the vertex curvature (reciprocal of the lens curvature), k is the conic constant, and Ai is the correction coefficient of the i-th order of the aspheric surface.
Thus, the lens assembly 10 can effectively reduce the total length of the lens assembly 10 by adjusting the curvature and aspheric coefficients of the lens surfaces, and can effectively correct the aberration of the lens assembly 10, thereby improving the imaging quality.
Next, the present application will be described in detail with reference to the following examples, taking as an example the gap distance between the fourth lens L4 and the fifth lens L5.
The first embodiment is as follows:
referring to fig. 1, the first lens L1 has a positive refractive index, the second lens L2 has a refractive index, the third lens L3 has a negative refractive index, the fourth lens L4 has a refractive index, the fifth lens L5 has a refractive index, the sixth lens L6 has a refractive index, and the seventh lens L7 has a negative refractive index, wherein the refractive index of the second lens L2 may be a positive refractive index or a negative refractive index, the refractive index of the third lens L3 may be a positive refractive index or a negative refractive index, the refractive index of the fourth lens L4 may be a positive refractive index or a negative refractive index, the refractive index of the fifth lens L5 may be a positive refractive index or a negative refractive index, and the refractive index of the sixth lens L6 may be a positive refractive index or a negative refractive index.
Referring to fig. 1 to 5, the lens assembly 10 satisfies the following table conditions:
TABLE 1
| Conditional formula (VII) | Example 1 |
| |f2|/f | 1.32103423 |
| (T4/f)*100 | 13.7802599 |
| R2/R5 | 0.23026654 |
| R3/R7 | 0.0948808 |
| R5/T3 | 29.3478274 |
| (R7/R2)/100 | 7.59800298 |
| R7/(T3-T2) | 71.4511318 |
| R10/f | -1.0122034 |
| R3/f | -2.049299 |
| (R2/T1)/100 | 0.35283635 |
| D4/f4*100 | 1.07531764 |
| D4/f*100 | 7.28556164 |
TABLE 2
In table 2, fno is an f-number of the lens group 10, TTL is a total length of the lens group 10, ih is an image plane S17 height of the lens group 10, ω is a field angle of the lens group 10, and f is an effective focal length of the lens group 10.
TABLE 3
| Distance of object | TTL | f | L4-L5 air separation distance |
| Infinity(s) | 7.2 | 6.177 | 0.8512 |
| 200mm | 7.3953 | 6.1592 | 0.8844 |
In table 3, TTL is the total length of the lens group 10, f is the effective focal length of the lens group 10, and L4-L5 are the air separation distance between the fourth lens element L4 and the fifth lens element L5.
TABLE 4
It can be understood from fig. 1 and 2 that the distances between the image side surface S16 of the infrared filter L8 and the image surface S17 of the lens group 10 are different in fig. 1 and 2, and thus the positions of the light rays are different.
Fig. 3 to 5 are a longitudinal spherical aberration diagram, an astigmatism diagram and a distortion diagram of the lens set according to the first embodiment, respectively.
The abscissa of the longitudinal spherical aberration diagram represents the focus offset, and the ordinate represents the normalized field of view, and the focus offsets of different fields of view are within ± 0.05mm when the wavelengths given in fig. 3 are 587.5618nm, 656.2725nm, and 486.1327nm, respectively, which indicates that the optical lens 10 in this embodiment has a small spherical aberration and a good imaging quality.
The abscissa of the astigmatism graph represents the focus offset, the ordinate represents the image height, and the astigmatism curve given in fig. 4 represents the focus offset of the sagittal image plane (X) and the meridional image plane (Y) at a wavelength of 587.5618nm, and it can be seen from fig. 4 that the focus offsets of the sagittal image plane (X) and the meridional image plane (Y) are both within ± 0.1mm, which shows that the optical lens 10 in this embodiment has less astigmatism and better imaging quality.
The abscissa of the distortion diagram represents the distortion rate, and the ordinate represents the image height, and the distortion curve shown in fig. 5 represents the distortion condition at a wavelength of 587.5618nm, and it can be seen from fig. 5 that the distortion is within ± 8%, which shows that the distortion of the optical lens 10 in the embodiment is better corrected and the imaging quality is better.
Example two:
referring to fig. 6, the first lens L1 has a positive refractive index, the second lens L2 has a refractive index, the third lens L3 has a negative refractive index, the fourth lens L4 has a refractive index, the fifth lens L5 has a refractive index, the sixth lens L6 has a refractive index, and the seventh lens L7 has a negative refractive index, wherein the refractive index of the second lens L2 may be the positive refractive index or the negative refractive index, the refractive index of the third lens L3 may be the positive refractive index or the negative refractive index, the refractive index of the fourth lens L4 may be the positive refractive index or the negative refractive index, the refractive index of the fifth lens L5 may be the positive refractive index or the negative refractive index, and the refractive index of the sixth lens L6 may be the positive refractive index or the negative refractive index.
Referring to fig. 6 to 10, the lens assembly 10 satisfies the following table conditions:
TABLE 5
| Conditional formula (II) | Example 2 |
| |f2|/f | 2.53097059 |
| (T4/f)*100 | 4.7686648 |
| R2/R5 | 0.62647902 |
| R3/R7 | -0.0885502 |
| R5/T3 | 37.7994514 |
| (R7/R2)/100 | -1.5830449 |
| R7/(T3-T2) | 945.02394 |
| R10/f | -1.6958988 |
| R3/f | 6.46792996 |
| (R2/T1)/100 | 0.57982003 |
| D4/f4*100 | -0.2785757 |
| D4/f*100 | 7.27578457 |
TABLE 6
In table 6, fno is the f-number of the lens group 10, TTL is the total length of the lens group 10, ih is the height of the image plane S17 of the lens group 10, ω is the field angle of the lens group 10, and f is the effective focal length of the lens group 10.
TABLE 7
| Distance of object | TTL | f | L4-L5 air separation distance |
| Infinity(s) | 7.6 | 6.1849 | 0.294937149 |
| 200mm | 7.8138 | 6.1724 | 0.367519903 |
In table 7, TTL is the total length of the lens group 10, f is the effective focal length of the lens group 10, and L4-L5 are air separation distances between the fourth lens element L4 and the fifth lens element L5.
TABLE 8
As can be seen from fig. 5 and 6, in fig. 5 and 6, the distance between the image side surface S16 of the infrared filter L8 and the image surface S17 of the lens group 10 is different, and thus the positions of the light rays are different.
Fig. 8 to 10 are a longitudinal spherical aberration diagram, an astigmatism diagram and a distortion diagram of the lens group according to the second embodiment, respectively.
The abscissa of the longitudinal spherical aberration diagram represents the focus offset, the ordinate represents the normalized field of view, and the wavelength given in fig. 8 is 587.5618nm, 656.2725nm, 486.1327nm, respectively, and the focus offset of different fields of view is within ± 0.05mm, as can be seen from fig. 8, which indicates that the optical lens 10 in the embodiment has a small spherical aberration and a good imaging quality.
The abscissa of the astigmatism graph indicates the focus shift, the ordinate indicates the image height, the astigmatism curve given in fig. 9 indicates the focus shift of the sagittal image plane (X) and the meridional image plane (Y) at a wavelength of 587.5618nm, and it can be seen from fig. 9 that the focus shifts of the sagittal image plane (X) and the meridional image plane (Y) are both within ± 0.05mm, which indicates that the optical lens 10 in this embodiment has low astigmatism and good imaging quality.
The abscissa of the distortion diagram represents the distortion rate, the ordinate represents the image height, the distortion curve given in fig. 10 represents the distortion condition when the wavelength is 587.5618nm, and it can be known from fig. 10 that the distortion is within ± 5%, which shows that the distortion of the optical lens 10 in the embodiment is better corrected and the imaging quality is better.
Example three:
referring to fig. 11, the first lens L1 has a positive refractive index, the second lens L2 has a refractive index, the third lens L3 has a negative refractive index, the fourth lens L4 has a refractive index, the fifth lens L5 has a refractive index, the sixth lens L6 has a refractive index, and the seventh lens L7 has a negative refractive index, wherein the refractive index of the second lens L2 may be the positive refractive index or the negative refractive index, the refractive index of the third lens L3 may be the positive refractive index or the negative refractive index, the refractive index of the fourth lens L4 may be the positive refractive index or the negative refractive index, the refractive index of the fifth lens L5 may be the positive refractive index or the negative refractive index, and the refractive index of the sixth lens L6 may be the positive refractive index or the negative refractive index.
Referring to fig. 11 to fig. 15, the lens assembly 10 satisfies the following table conditions:
TABLE 9
| Conditional formula (VII) | Example 3 |
| |f2|/f | 2.52137111 |
| (T4/f)*100 | 4.69792014 |
| R2/R5 | 0.62877105 |
| R3/R7 | -0.1102284 |
| R5/T3 | 37.0443904 |
| (R7/R2)/100 | -1.2852054 |
| R7/(T3-T2) | 840.809885 |
| R10/f | -1.6943373 |
| R3/f | 6.3672665 |
| (R2/T1)/100 | 0.55526633 |
| D4/f4*100 | -0.2690988 |
| D4/f*100 | 7.26908539 |
TABLE 10
In table 10, fno is the f-number of the lens group 10, TTL is the total length of the lens group 10, ih is the height of the image plane S17 of the lens group 10, ω is the field angle of the lens group 10, and f is the effective focal length of the lens group 10.
TABLE 11
| Distance of object | TTL | f | L4-L5 air separation distance |
| Infinity(s) | 7.6 | 6.1906 | 0.290829444 |
| 200mm | 7.8142 | 6.1775 | 0.365381492 |
In table 11, TTL is the total length of the lens group 10, f is the effective focal length of the lens group 10, and L4-L5 are air separation distances between the fourth lens L4 and the fifth lens L5.
TABLE 12
As can be seen from fig. 11 and 12, the distances between the image side surface S16 of the infrared filter L8 and the image surface S17 of the lens group 10 in fig. 11 and 12 are different, and thus the positions of the light rays are different.
Fig. 13 to 15 are a longitudinal spherical aberration diagram, an astigmatism diagram and a distortion diagram of the lens group in the third embodiment, respectively.
The abscissa of the vertical spherical aberration diagram represents the focus offset, and the ordinate represents the normalized field of view, and when the wavelengths given in fig. 13 are 587.5618nm, 656.2725nm, and 486.1327nm, respectively, and the focus offsets of different fields of view are within ± 0.05mm, as can be seen from fig. 13, it is demonstrated that the optical lens 10 in the present embodiment has a small spherical aberration and a good imaging quality.
The abscissa of the astigmatism graph represents the focus offset, the ordinate represents the image height, the astigmatism curve given in fig. 14 represents the focus offset of the sagittal image plane (X) and the meridional image plane (Y) at a wavelength of 587.5618nm, and it can be seen from fig. 14 that the focus offsets of the sagittal image plane (X) and the meridional image plane (Y) are both within ± 0.08mm, which shows that the optical lens 10 in this embodiment has less astigmatism and better imaging quality.
The abscissa of the distortion diagram represents the distortion rate, the ordinate represents the image height, the distortion curve given in fig. 15 represents the distortion condition when the wavelength is 587.5618nm, and it can be known from fig. 15 that the distortion is within ± 5%, which shows that the distortion of the optical lens 10 in the embodiment is better corrected and the imaging quality is better.
Referring to fig. 16, a camera module 100 according to the present embodiment includes the lens assembly 10 and the photosensitive element 20 according to any of the above embodiments, and the photosensitive element 20 is disposed on an image side of the lens assembly 10.
The photosensitive element 20 may be a Complementary Metal Oxide SemiconductoR (CMOS) photosensitive element or a ChaRge-coupled Device (CCD) photosensitive element.
In the camera module 100 of the embodiment of the present application, the effective focal length of the lens group 10 under the infinite shooting condition and the object under the macro condition can be changed by changing the air separation distance between two adjacent lenses when the lens group 10 shoots the object under the infinite shooting condition and the object under the macro condition, so that the lens group 10 can shoot images with higher quality under different conditions, and the user experience is improved.
The electronic device 1000 according to the embodiment of the present application includes a housing 200 and the camera module 100, and the camera module 100 is mounted on the housing 200.
In the electronic device 1000 according to the embodiment of the present application, the effective focal length of the lens group 10 under the infinite shooting condition and the object under the macro condition can be changed by changing the air separation distance between two adjacent lenses when the lens group 10 shoots the object under the infinite shooting condition and the object under the macro condition, so that the lens group 10 can shoot high-quality images under different conditions, and the user experience is improved.
The electronic device 1000 according to the embodiment of the present invention includes, but is not limited to, information terminal devices such as a smart phone (as shown in fig. 17), a mobile phone, a PeRsonal Digital Assistant (PDA), a game machine, a PeRsonal ComputeR (PC), a camera, a smart watch, a tablet PC (fig. 18), and home appliances having a photographing function.
In the description herein, references to the description of the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application, which is defined by the claims and their equivalents.
Claims (11)
1. A lens assembly, comprising seven refractive lenses in order from an object side to an image side:
a first lens having a positive refractive index;
a second lens having a positive refractive index;
a third lens having a negative refractive index;
a fourth lens having a positive refractive index;
a fifth lens having a positive refractive index;
a sixth lens having a negative refractive index;
a seventh lens having a negative refractive index; or,
a first lens having a positive refractive index;
a second lens having a negative refractive index;
a third lens having a positive refractive index;
a fourth lens having a negative refractive index;
a fifth lens having a negative refractive index;
a sixth lens having a positive refractive index;
a seventh lens having a negative refractive index;
the lens group satisfies the following relational expression:
Tn_zoom1/Tn_zoom2<1.0，1.0<∣f2∣/f；
wherein Tn _ zoom1 is an air separation distance between two adjacent lenses when the lens group photographs an object at infinity, tn _ zoom2 is an air separation distance between two adjacent lenses when the lens group photographs an object at macro, f2 is an effective focal length of the second lens, and f is an effective focal length of the lens group.
2. The lens group according to claim 1, characterized in that the lens group satisfies at least one of the following relations:
Fno<2.0；
TTL/ih<1.5；
70.0 ° < field angle ω <90 °;
0<TTL_zoom1/TTL_zoom2<1.0；
wherein Fno is an f-number of the lens group, TTL is an optical total length of the lens group, ih is an image plane height of the lens group, TTL _ zoom1 is an optical total length of the lens group when the lens group shoots an object under an infinite distance condition, and TTL _ zoom2 is an optical total length of the lens group when the lens group shoots an object under a macro distance condition.
3. The lens group according to claim 1, wherein said lens group satisfies the following relation:
1.0<f_zoom1/f_zoom2；
wherein f _ zoom1 is an effective focal length of the lens group when the lens group photographs an object at infinity, and f _ zoom2 is an effective focal length of the lens group when the lens group photographs an object at macro.
4. The lens group according to claim 1, wherein said lens group satisfies the following relation:
T4_zoom1/T4_zoom2<1.0；
wherein T4_ zoom1 is an air separation distance between the fourth lens and the fifth lens when the lens group photographs an object in an infinite distance condition, and T4_ zoom2 is an air separation distance between the fourth lens and the fifth lens when the lens group photographs an object in a macro condition.
5. The lens group of claim 4, wherein said lens group satisfies the following relationship:
0<(T4/f)*100<50；
wherein T4 is an air separation distance between the fourth lens element and the fifth lens element, and f is an effective focal length of the lens assembly.
6. The lens group according to claim 1, characterized in that the lens group satisfies at least one of the following relations:
0<R2/R5<10；
-10<R3/R7<10；
wherein R2 is a lens curvature of an image side surface of the first lens element, R3 is a lens curvature of an object side surface of the second lens element, R5 is a lens curvature of an object side surface of the third lens element, and R7 is a lens curvature of an object side surface of the fourth lens element.
7. The lens group according to claim 1, characterized in that the lens group satisfies at least one of the following relations:
0<R5/T3<100；
-20<(R7/T2)/100<20；
0<R7/(T3-T2)；
0<(R2/T1)/100<20；
wherein R2 is a lens curvature of an image-side surface of the first lens element, R5 is a lens curvature of an object-side surface of the third lens element, R7 is a lens curvature of an object-side surface of the fourth lens element, T1 is an air separation distance between the first lens element and the second lens element, T2 is an air separation distance between the second lens element and the third lens element, and T3 is an air separation distance between the third lens element and the fourth lens element.
8. The lens group according to claim 1, wherein said lens group satisfies the following relation:
R10/f<0；
-20<R3/f<20；
wherein R3 is a curvature of an object-side surface of the second lens element, R10 is a curvature of an image-side surface of the fifth lens element, and f is an effective focal length of the lens assembly.
9. The lens group according to claim 1, wherein said lens group satisfies the following relation:
-20<(D4/f4)*100<20；
0<D4/f*100<20；
wherein D4 is a thickness of the fourth lens element, f4 is an effective focal length of the fourth lens element, and f is an effective focal length of the lens assembly.
10. A camera module, comprising:
the lens group of any one of claims 1 to 9; and
a photosensitive element disposed on an image side of the lens group.
11. An electronic device, comprising:
a housing; and
the camera module of claim 10, mounted to the housing.
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| CN202011027182.3A CN112130280B (en) | 2020-09-25 | 2020-09-25 | Lens group, camera module and electronic device |
| PCT/CN2021/107174 WO2022062609A1 (en) | 2020-09-25 | 2021-07-19 | Lens group, camera module and electronic device |
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| CN112130280B (en) * | 2020-09-25 | 2022-12-02 | Oppo广东移动通信有限公司 | Lens group, camera module and electronic device |
| CN112162389B (en) * | 2020-11-30 | 2021-02-12 | 常州市瑞泰光电有限公司 | Image pickup optical lens |
| TWI803041B (en) | 2021-11-03 | 2023-05-21 | 大立光電股份有限公司 | Optical photographing system, image capturing unit and electronic device |
| CN114911034B (en) * | 2022-04-28 | 2024-06-21 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| JP3264702B2 (en) * | 1992-03-10 | 2002-03-11 | 株式会社リコー | Zoom lens |
| JP3323303B2 (en) * | 1993-04-22 | 2002-09-09 | 株式会社リコー | Zoom lens |
| KR970006204B1 (en) * | 1993-11-11 | 1997-04-24 | Samsung Aerospace Ind | Zoom lens |
| KR100256207B1 (en) * | 1994-08-19 | 2000-05-15 | 유무성 | Zoom lens |
| KR100256204B1 (en) * | 1995-12-14 | 2000-05-15 | 유무성 | Compact zoom lens |
| KR19980068066A (en) * | 1997-02-14 | 1998-10-15 | 이대원 | zoom lens |
| JP2002350725A (en) * | 2001-05-23 | 2002-12-04 | Kyocera Corp | Small zoom lens |
| CN209070213U (en) * | 2018-09-21 | 2019-07-05 | 鹤山市嘉米基光电科技有限公司 | A kind of outdoor projection camera lens |
| CN112130280B (en) * | 2020-09-25 | 2022-12-02 | Oppo广东移动通信有限公司 | Lens group, camera module and electronic device |
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