CN111983785B - Optical imaging system, imaging module and electronic device - Google Patents
Optical imaging system, imaging module and electronic device Download PDFInfo
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- CN111983785B CN111983785B CN202010955203.1A CN202010955203A CN111983785B CN 111983785 B CN111983785 B CN 111983785B CN 202010955203 A CN202010955203 A CN 202010955203A CN 111983785 B CN111983785 B CN 111983785B
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 185
- 238000003384 imaging method Methods 0.000 title claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 149
- MTEOMEWVDVPTNN-UHFFFAOYSA-E almagate Chemical compound O.O.[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Al+3].[O-]C([O-])=O MTEOMEWVDVPTNN-UHFFFAOYSA-E 0.000 claims abstract description 12
- 230000001154 acute effect Effects 0.000 claims abstract description 8
- 238000010586 diagram Methods 0.000 description 32
- 230000004075 alteration Effects 0.000 description 25
- 201000009310 astigmatism Diseases 0.000 description 15
- 238000013461 design Methods 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 206010010071 Coma Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
本发明提出一种光学成像系统、取像模组和电子装置。光学成像系统由物侧到像侧依次包括：具有负屈折力的第一透镜；具有屈折力的第二透镜与第三透镜；具有正屈折力的第四透镜，其物侧面于光轴处为凸面，其像侧面于光轴处为凸面；具有负屈折力的第五透镜；具有正屈折力的第六透镜，其像侧面于光轴处为凸面；具有负屈折力的第七透镜，其物侧面于光轴处为凸面，其像侧面于光轴处为凹面；所述光学成像系统满足以下条件式：Almax≤30°；其中，所述光学成像系统的第一透镜至第七透镜的物侧面和像侧面的光学有效区域内各处具有切面，所述切面与垂直于光轴的平面相交形成锐角夹角，Almax为所述锐角夹角的最大值。
The present invention proposes an optical imaging system, an imaging module and an electronic device. The optical imaging system includes, from the object side to the image side, a first lens with negative refractive power; a second lens and a third lens with refractive power; a fourth lens with positive refractive power, whose object side surface is convex at the optical axis and whose image side surface is convex at the optical axis; a fifth lens with negative refractive power; a sixth lens with positive refractive power, whose image side surface is convex at the optical axis; a seventh lens with negative refractive power, whose object side surface is convex at the optical axis and whose image side surface is concave at the optical axis; the optical imaging system satisfies the following conditional formula: Almax≤30°; wherein, each of the optical effective areas of the object side surface and the image side surface of the first lens to the seventh lens of the optical imaging system has a cut surface, and the cut surface intersects with a plane perpendicular to the optical axis to form an acute angle, and Almax is the maximum value of the acute angle.
Description
Technical Field
The present disclosure relates to optical imaging technology, and more particularly, to an optical imaging system, an image capturing module, and an electronic device.
Background
With the wide application of electronic products such as mobile phones, tablet computers, unmanned aerial vehicles, computers and the like in life, various electronic products with shooting functions are continuously promoted. The innovation of the improvement of the shooting effect of the shooting lens in the electronic product becomes one of the centers of gravity of people, and becomes an important content of technological improvement, and whether the miniature shooting element can be used for shooting high-quality pictures with high resolution and high definition or even under the condition of dim light becomes a key consideration factor for selecting electronic products by modern people. Therefore, miniaturization and performance improvement of the optical system design become key factors for improving shooting quality of the current camera.
In the process of realizing the application, the inventor finds that at least the following problems exist in the prior art, namely that the prior optical imaging system is difficult to realize a larger field angle and better image quality under the condition of keeping miniaturization.
Disclosure of Invention
In view of the foregoing, it is necessary to provide an optical imaging system, an image capturing module and an electronic device to solve the above problems.
An embodiment of the application provides an optical imaging system, which sequentially comprises a first lens with negative refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, a seventh lens with negative refractive power, a seventh lens with positive refractive power, a seventh lens with negative refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power, a fifth lens with positive refractive power, a sixth lens with positive refractive power, a seventh lens with positive refractive power, and a seventh lens with negative refractive power, and an optical imaging system satisfying the following conditional expression that Almax-30 DEG is provided in each of an object side and an optical effective area of the fourth lens, an acute angle is formed by intersecting a plane perpendicular to the optical axis, and Almax is a maximum value of the acute angle.
The optical imaging system has the advantages that the above formula is met, the surface type complexity of all lenses in the optical imaging system is low through reasonable surface type bending degree setting, the increase of field curvature and distortion in the T direction is restrained to a certain extent, and meanwhile, the forming difficulty is reduced, and the overall image quality is improved. Through the reasonable lens configuration, the optical imaging system provided by the embodiment of the application increases the field angle while meeting the micro design, and the field angle is larger than that of a conventional lens, so that the relative brightness is improved, the view finding area is improved, and the optical imaging system can realize higher pixels and good image quality.
In some embodiments, the optical imaging system satisfies the following conditional expression:
FOV is more than or equal to 110 degrees, and FNO is less than or equal to 2.4;
Wherein FOV is the maximum field angle of the optical imaging system and FNO is the f-number of the optical imaging system.
The above formula is satisfied, on the one hand, the optical imaging system 10 can realize super wide angle and draw the image to promote the area of finding a view in order to acquire more image information, on the other hand, can also guarantee good luminous flux, and then improve optical imaging quality.
In some embodiments, the optical imaging system satisfies the following conditional expression:
SD1/ImgH<0.57;
Wherein SD1 is the vertical distance between the edge of the optical effective area of the object side surface of the first lens and the optical axis, and ImgH is half of the image height corresponding to the maximum field angle of the optical imaging system.
The aperture of the object side surface of the first lens is relatively smaller due to the fact that the aperture of the object side surface of the first lens is smaller, the characteristic of a small head is achieved while the ultra-wide angle is met, the cavity area required by the optical imaging system for electronic equipment is effectively reduced, cost and processing difficulty are reduced, the yield is improved, and the electronic equipment is attractive.
In some embodiments, the optical imaging system satisfies the following conditional expression:
FOV/f>71°/mm;
Wherein FOV is the maximum field angle of the optical imaging system and f is the focal length of the optical imaging system.
The optical imaging system can provide a field angle of over 110 degrees, and can effectively improve the view finding area of a picture. Furthermore, the angle of view can reach 124 degrees, the effective focal length is reduced, the optical imaging system has a certain micro-distance capability while accommodating more imaging areas, and the capturing capability of the system to low-frequency details can be improved through reasonable refractive power configuration, so that the design requirement of high image quality is met.
In some embodiments, the optical imaging system satisfies the following conditional expression:
SD1/AT12<6.1;
Wherein SD1 is the vertical distance between the edge of the optically effective area of the object side surface of the first lens element and the optical axis, and AT12 is the distance between the image side surface of the first lens element and the object side surface of the second lens element on the optical axis.
SD1 represents the head size of the optical imaging system 10, influences structural arrangement, assembly yield and the like, meets the requirements of effectively compressing SD1, can reduce the head size, reduces the width of the optical imaging system perpendicular to the optical axis direction, and is matched with the reduction of AT12 to compress the whole volume to a greater extent, so that the compactness of the optical imaging system is improved, the ghost image risk is reduced, and on the other hand, the structural arrangement difficulty is reduced, and the assembly molding yield is improved.
In some embodiments, the optical imaging system satisfies the following conditional expression:
0.64<(|R62|+|R72|)/f<0.94;
Wherein R62 is a radius of curvature of the image side surface of the sixth lens element at the optical axis, R72 is a radius of curvature of the image side surface of the seventh lens element at the paraxial region, and f is a focal length of the optical imaging system.
The combination structure of the sixth lens and the seventh lens can counteract most of distortion and coma aberration generated by the front lens, and can avoid introducing larger spherical aberration and vertical axis chromatic aberration by the combination structure through reasonable curvature radius setting, thereby being beneficial to reasonable distribution of primary aberration on each lens and reducing tolerance sensitivity.
In some embodiments, the optical imaging system satisfies the following conditional expression:
1.8<(|f6|+|f7|)/f<2.5;
Wherein f6 is the focal length of the second lens, f7 is the focal length of the third lens, and f is the focal length of the optical imaging system.
The size of the sixth lens and the size of the seventh lens and the focal length of the optical imaging system are reasonably configured, larger spherical aberration generated by the rear lens group can be avoided, the overall resolution of the optical imaging system is improved, meanwhile, the surface type complexity of the fifth lens group is reduced, and the yield of the optical imaging system is improved.
In some embodiments, the optical imaging system satisfies the following conditional expression:
1.3<(|CT3|+|CT4|+|CT5|)/BF<1.8;
Wherein, CT3 is the thickness of the third lens element on the optical axis, CT4 is the thickness of the fourth lens element on the optical axis, CT5 is the thickness of the fifth lens element on the optical axis, and BF is the minimum distance between the sixth lens element and the image plane in the direction of the optical axis.
Satisfying the above formula can ensure that the optical imaging system 10 and the photosensitive element have sufficient matching space, which is beneficial to the improvement of the assembly yield. Meanwhile, the reasonable configuration of CT3, CT4 and CT5 can reduce the optical length, thereby being beneficial to forming symmetry and reducing optical distortion.
In some embodiments, the optical imaging system satisfies the following conditional expression:
0.59<|R71|/|f7|<1.1;
wherein R71 is a radius of curvature of the object side surface of the seventh lens at the optical axis, and f7 is a focal length of the seventh lens.
Through reasonable focal power and curvature radius setting of the seventh lens, the surface type of the seventh lens is low in complexity, the increase of field curvature and distortion in the T direction is restrained to a certain extent, the forming difficulty is reduced, and the overall image quality is improved.
In some embodiments, the optical imaging system satisfies the following conditional expression:
AT45/ET45<1.3;
Wherein, AT45 is a distance between the image side surface of the fourth lens element and the object side surface of the fifth lens element on the optical axis, and ET45 is a thickness of an edge of the optically effective area of the fifth lens element in the optical axis direction.
The fourth lens and the fifth lens form a certain matching shape, the fifth lens has negative refractive power, the fourth lens has refractive power, the matching of the fourth lens and the fifth lens has very good correction effect on chromatic aberration, and meanwhile, the fourth lens and the fifth lens also have good correction effect on spherical aberration, so that the system has good resolution. In addition, the reduction in size provides convenience for the compact and compact optical length of the lift system.
The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all made of plastic materials.
Thus, the plastic lens can reduce the weight of the optical imaging system and the production cost.
In some embodiments, the optical imaging system further comprises a stop disposed between the third lens and the fourth lens.
The design of the intermediate diaphragm provides the possibility for large viewing angles. In addition, the middle diaphragm ensures that the structure of the optical imaging system has certain symmetry, so that the optical distortion is well controlled.
The embodiment of the invention provides an image capturing module, which comprises the optical imaging system of any embodiment and a photosensitive element, wherein the photosensitive element is arranged on the image side of the optical imaging system.
The image capturing module provided by the embodiment of the invention comprises the optical imaging system, and through the reasonable lens configuration, the view angle is increased while the micro design is satisfied, the view angle is larger than that of a conventional lens, the relative brightness is improved, the view finding area is improved, and the image capturing module can realize higher pixels and good image quality.
The embodiment of the invention provides an electronic device, which comprises a shell and the image capturing module of the embodiment, wherein the image capturing module is arranged on the shell.
The electronic device provided by the embodiment of the invention comprises the image capturing module, and the optical imaging system in the image capturing module can realize higher pixels and good image quality while meeting the micro design through the reasonable lens configuration.
Drawings
The foregoing and/or additional aspects and advantages of the invention may be apparent and may be readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a schematic structural view of an optical imaging system according to a first embodiment of the present invention.
Fig. 2 is a schematic view of spherical aberration (mm), astigmatism (mm), and distortion (%) of an optical imaging system in the first embodiment of the present invention.
Fig. 3 is a schematic structural view of an optical imaging system according to a second embodiment of the present invention.
Fig. 4 is a schematic view of spherical aberration (mm), astigmatism (mm), and distortion (%) of an optical imaging system in a second embodiment of the present invention.
Fig. 5 is a schematic structural view of an optical imaging system according to a third embodiment of the present invention.
Fig. 6 is a schematic view of spherical aberration (mm), astigmatism (mm), and distortion (%) of an optical imaging system in a third embodiment of the invention.
Fig. 7 is a schematic structural view of an optical imaging system according to a fourth embodiment of the present invention.
Fig. 8 is a schematic view of spherical aberration (mm), astigmatism (mm), and distortion (%) of an optical imaging system in a fourth embodiment of the invention.
Fig. 9 is a schematic structural view of an optical imaging system according to a fifth embodiment of the present invention.
Fig. 10 is a schematic view of spherical aberration (mm), astigmatism (mm), and distortion (%) of an optical imaging system in a fifth embodiment of the present invention.
Fig. 11 is a schematic structural diagram of an image capturing module according to an embodiment of the invention.
Fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Description of the main reference signs
Electronic device 1000
Image capturing module 100
Optical imaging system 10
First lens L1
Second lens L2
Third lens L3
Fourth lens L4
Fifth lens L5
Sixth lens L6
Seventh lens L7
Infrared filter L8
Stop STO
Object side surfaces S1, S3, S5, S7, S9, S11, S13, S15
Image sides S2, S4, S6, S8, S10, S12, S14, S16
Image plane S17
Photosensitive element 20
Housing 200
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected via an intermediary, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Referring to fig. 1, an optical imaging system 10 according to an embodiment of the invention includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with negative refractive power, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, a sixth lens element L6 with positive refractive power, and a seventh lens element L7 with negative refractive power. The image side of the optical imaging system 10 also has an image plane S17, and preferably, the image plane S17 may be a receiving plane of the photosensitive element.
The first lens element 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 third lens element L3 has an object-side surface S5 and an image-side surface S6, the fourth lens element L4 has an object-side surface S7 and an image-side surface S8, the object-side surface S7 is convex at the optical axis, the image-side surface S8 is convex at the optical axis, the fifth lens element L5 has an object-side surface S9 and an image-side surface S10, the sixth lens element L6 has an object-side surface S11 and an image-side surface S12, the image-side surface S12 is convex at the optical axis, the seventh lens element L7 has an object-side surface S13 and an image-side surface S14, and the object-side surface S13 is convex at the optical axis, and the image-side surface S14 is concave at the optical axis.
The optical imaging system 10 satisfies the following conditional expression:
Almax≤30°;
The object-side surface and the image-side surface of the first lens L1 to the seventh lens L7 of the optical imaging system 10 have a tangential plane everywhere in the optically effective area, and the tangential plane intersects a plane perpendicular to the optical axis to form an acute included angle, and Almax is the maximum value of the acute included angle.
The optical imaging system has the advantages that the above formula is met, the surface type complexity of all lenses in the optical imaging system is low through reasonable surface type bending degree setting, the increase of field curvature and distortion in the T direction is restrained to a certain extent, and meanwhile, the forming difficulty is reduced, and the overall image quality is improved.
In the optical imaging system 10 according to the embodiment of the present application, through the above reasonable lens configuration, the micro design is satisfied, and the field angle is increased, and is larger than that of a conventional lens, so that the relative brightness is improved, and the viewing area is improved, and the optical imaging system 10 can realize higher pixels and good image quality.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
FOV≥110°;
FNO≤2.4。
Where FOV is the maximum field angle of the optical imaging system 10 and FNO is the f-number of the optical imaging system 10. FOV can be 110 °, 112 °, 116 °, 120 °, 124 °, etc., and FNO can be 2.4, 2.35, 2.3, 2.25, 2.2, etc.
The above formula is satisfied, on the one hand, the optical imaging system 10 can realize super wide angle and draw the image to promote the area of finding a view in order to acquire more image information, on the other hand, can also guarantee good luminous flux, and then improve optical imaging quality.
In some embodiments, the optical imaging system satisfies the following conditional expression:
SD1/ImgH<0.57;
Wherein SD1 is the vertical distance between the edge of the optical effective area of the object side surface S1 of the first lens L1 and the optical axis, imgH is half of the image height corresponding to the maximum field angle of the optical imaging system 10, and SD1/ImgH may be 0.562, 0.560, etc.
The aperture of the object side surface S1 of the first lens L1 is relatively smaller due to the fact that the aperture is smaller, the characteristic of a small head is achieved while the ultra-wide angle is met, the cavity area required by the optical imaging system 10 for electronic equipment is effectively reduced, cost and processing difficulty are reduced, the yield is improved, and the electronic equipment is attractive.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
FOV/f>71°/mm;
where FOV is the maximum field angle of the optical imaging system 10, f is the focal length of the optical imaging system, FOV/f can be 71.35 °/mm, 80.08 °/mm, 85.48 °/mm, 92.02 °/mm, 99.28 °/mm, etc.
Satisfying the above, the optical imaging system 10 can provide a field angle exceeding 110 ° and can effectively increase the viewing area of the picture. Further, the angle of view can reach 124 degrees, the effective focal length is reduced, the optical imaging system 10 has a certain micro-distance capability while accommodating more image capturing areas, and the capturing capability of the system to low-frequency details can be improved through reasonable refractive power configuration, so that the design requirement of high image quality is met.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
SD1/AT12<6.1;
Wherein SD1 is the vertical distance between the edge of the optically effective area of the object-side surface S1 of the first lens element L1 and the optical axis, AT12 is the distance between the image-side surface S2 of the first lens element L1 and the object-side surface S3 of the second lens element L2 on the optical axis, and SD1/AT12 can be 2.962, 4.403, 6.022, 6.055, 3.663, etc.
SD1 represents the head size of the optical imaging system 10, influences structural arrangement, assembly yield and the like, meets the requirements of effectively compressing SD1, can reduce the head size, reduces the width of the optical imaging system 10 perpendicular to the optical axis direction, and is matched with the reduction of AT12 to compress the whole volume to a greater extent, so that the compactness of the optical imaging system 10 is improved, the ghost image risk is reduced, and on the other hand, the structural arrangement difficulty is reduced, and the assembly molding yield is improved.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
0.64<(|R62|+|R72|)/f<0.94;
Where R62 is a radius of curvature of the image side surface S12 of the sixth lens element L6 at the optical axis, R72 is a radius of curvature of the image side surface S14 of the seventh lens element L7 at the paraxial region, f is a focal length of the optical imaging system 10, and (|r62|+|r72|)/f can be any value within the range of (0.64,0.94), such as 0.873, 0.642, 0.661, 0.939, 0.785, etc.
The combined structure of the sixth lens L6 and the seventh lens L7 can counteract most of distortion and coma generated by the front lens, and larger spherical aberration and vertical axis chromatic aberration can be prevented from being introduced by the combined structure through reasonable curvature radius arrangement, so that reasonable distribution of primary aberration on each lens is facilitated, and tolerance sensitivity is reduced.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
1.8<(|f6|+|f7|)/f<2.5;
Where f6 is the focal length of the second lens, f7 is the focal length of the third lens, f is the focal length of the optical imaging system, and (|f6|+|f7|)/f can be any value within the range of (1.8,2.5), such as 2.435, 1.890, 1.930, 2.399, 2.251, etc.
The size of the sixth lens L6 and the seventh lens L7 and the focal length of the optical imaging system 10 are reasonably configured, so that larger spherical aberration generated by the rear lens group can be avoided, the overall resolution of the optical imaging system 10 is improved, meanwhile, the surface complexity of the fifth lens group is reduced, and the yield of the optical imaging system 10 is improved.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
1.3<(|CT3|+|CT4|+|CT5|)/BF<1.8;
Wherein, CT3 is the thickness of the third lens element L3 on the optical axis, CT4 is the thickness of the fourth lens element L4 on the optical axis, CT5 is the thickness of the fifth lens element L5 on the optical axis, and BF is the minimum distance between the sixth lens element L6 and the image plane S17 in the optical axis direction. (|CT3|+|CT4|+|CT5|)/BF can be any value within the range of (1.3,1.8), for example 1.377, 1.591, 1.533, 1.669, 1.719, etc.
Satisfying the above formula can ensure that the optical imaging system 10 and the photosensitive element have sufficient matching space, which is beneficial to the improvement of the assembly yield. Meanwhile, the reasonable configuration of CT3, CT4 and CT5 can reduce the optical length, thereby being beneficial to forming symmetry and reducing optical distortion.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
0.59<|R71|/|f7|<1.1;
Wherein R71 is a radius of curvature of the object side surface S13 of the seventh lens L7 at the optical axis, and f7 is a focal length of the seventh lens L7. The R71/f7 may be any value within the range of (0.59,1.1), such as 0.802, 0.643, 0.670, etc.
The lens structure meets the above formula, and through reasonable focal power and curvature radius setting of the seventh lens L7, the surface type of the seventh lens L7 is low in complexity, the increase of field curvature and distortion in the T direction is restrained to a certain extent, the forming difficulty is reduced, and the overall image quality is improved.
In some embodiments, the optical imaging system 10 satisfies the following conditional expression:
AT45/ET45<1.3;
Wherein AT45 is a distance between the image side surface S8 of the fourth lens element L4 and the object side surface S9 of the fifth lens element L5 on the optical axis, and ET45 is a thickness of the fifth lens element L5 in the optical axis direction AT an edge of the optically effective area. AT45/ET45 can be 0.761, 0.953, 0.932, 0.838, 1.288, and the like.
The above formula is satisfied, the fourth lens element L4 and the fifth lens element L5 form a certain fit, the fifth lens element L5 has negative refractive power, the fourth lens element L4 has refractive power, the fit of the fourth lens element L4 and the fifth lens element L5 has a very good correction effect on chromatic aberration, and meanwhile, the fourth lens element L4 and the fifth lens element L5 have good correction effect on spherical aberration, so that the system has good resolution. In addition, the reduction in size provides convenience for the compact and compact optical length of the lift system.
In some embodiments, the optical imaging system 10 further includes a stop STO. The stop STO may be disposed before the first lens L1, after the seventh lens L7, between any two lenses, or on the surface of any one of the lenses. The stop STO is used to reduce stray light and improve image quality. For example, in some embodiments, the stop STO is disposed between the third lens L3 and the fourth lens L4. The design of the intermediate diaphragm provides the possibility for large viewing angles. In addition, the middle diaphragm ensures that the structure of the optical imaging system 10 has certain symmetry, so that the optical distortion is well controlled.
In some embodiments, the optical imaging system 10 further includes an infrared filter L8, the infrared filter L8 having an object side surface S15 and an image side surface S16. The infrared filter L8 is disposed on the image side surface S14 of the seventh lens element L7 to filter out light rays of other wavelength bands, such as visible light, and only let infrared light pass through, so that the optical imaging system 10 can image in a dim environment and other special application scenarios.
When the optical imaging system 10 is used for imaging, light rays emitted or reflected by a subject enter the optical imaging system 10 from an object side direction, sequentially 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, the seventh lens L7, and the infrared filter L8, and finally converge on the image plane S17.
In some 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 are all made of plastic materials. At this time, the plastic lens can reduce the weight of the optical imaging system 10 and the production cost. In other embodiments, each lens may be made of glass, or any combination of plastic and glass.
In some embodiments, at least one surface of at least one lens in the optical imaging system 10 is aspheric, which is beneficial for correcting aberrations and improving imaging quality. For example, in the first 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 in the optical imaging system 10 are all aspherical surfaces. The aspheric lens can achieve more light refraction angles so that the overall optical imaging system 10 achieves high pixel requirements.
The aspherical surface shape is determined by the following formula:
Wherein Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the vertex of the surface, r is the distance from the corresponding point on the aspheric surface to the optical axis, c is the curvature of the vertex of the aspheric surface (at the optical axis), k is the conic constant, and Ai is the coefficient corresponding to the ith higher term in the aspheric surface formula.
In this way, the optical imaging system 10 can effectively reduce the size of the optical imaging system 10 and effectively correct aberrations by adjusting the radius of curvature and the aspherical coefficients of the respective lens surfaces, improving the imaging quality.
In some embodiments, the object-side surface S1 of the first lens element L1 is convex at the circumference, the image-side surface S2 is concave at the circumference, the object-side surface S3 of the second lens element L2 is concave at the circumference, the image-side surface S4 is concave at the circumference, the object-side surface S7 of the fourth lens element L4 is convex at the circumference, the object-side surface S9 of the fifth lens element L5 is concave at the circumference, the image-side surface S10 is concave at the circumference, the object-side surface S11 of the sixth lens element L6 is convex at the circumference, the object-side surface S13 of the seventh lens element L7 is concave at the circumference, and the image-side surface S14 is convex at the circumference. Therefore, the surface shape of the lens at the circumference is reasonably configured, so that good image quality is improved.
First embodiment
Referring to fig. 1 and 2, the optical imaging system 10 of the first embodiment includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a third lens element L3 with negative refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, a sixth lens element L6 with positive refractive power, and a seventh lens element L7 with negative refractive power. Fig. 2 is a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the optical imaging system 10 in the first embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength of 587.5618 nm.
The object-side surface S1 of the first lens element L1 is convex at the optical axis, the image-side surface S2 is concave at the optical axis, the object-side surface S3 of the second lens element L2 is concave at the optical axis, the image-side surface S4 is convex at the optical axis, the object-side surface S5 of the third lens element L3 is convex at the optical axis, the image-side surface S6 is concave at the optical axis, the object-side surface S7 of the fourth lens element L4 is convex at the optical axis, the image-side surface S8 is convex at the optical axis, the object-side surface S9 of the fifth lens element L5 is convex at the optical axis, the image-side surface S10 is concave at the optical axis, the object-side surface S11 of the sixth lens element L6 is convex at the optical axis, the image-side surface S12 is convex at the optical axis, the object-side surface S13 of the seventh lens element L7 is convex at the optical axis, and the image-side surface S14 is concave at the optical axis.
The object-side surface S1 of the first lens element L1 is convex at the circumference, the image-side surface S2 is concave at the circumference, the object-side surface S3 of the second lens element L2 is concave at the circumference, the image-side surface S4 is concave at the circumference, the object-side surface S5 of the third lens element L3 is convex at the circumference, the image-side surface S6 is concave at the circumference, the object-side surface S7 of the fourth lens element L4 is convex at the circumference, the image-side surface S8 is convex at the circumference, the object-side surface S9 of the fifth lens element L5 is concave at the circumference, the image-side surface S10 is concave at the circumference, the object-side surface S11 of the sixth lens element L6 is convex at the circumference, the image-side surface S12 is concave at the circumference, the object-side surface S13 of the seventh lens element L7 is concave at the circumference, and the image-side surface S14 is convex at the circumference.
The stop STO is disposed between the third lens L3 and the fourth lens L4.
In the first embodiment, the optical imaging system 10 satisfies the following condition ：FOV＝110°,FNO＝2.40,f＝1.54mm,Almax＝30°,SD1/ImgH＝0.562,FOV/f＝71.35°/mm,SD1/AT12＝2.962,(|R62|+|R72|)/f＝0.873,(|f6|+|f7|)/f＝2.435,(|CT3|+|CT4|+|CT5|)/BF＝1.377,|R71|/|f7|＝0.802,AT45/ET45＝0.761.
The reference wavelength in the first embodiment is 587nm, and the optical imaging system 10 in the first embodiment satisfies the conditions of the following table. The elements from the object plane to the image plane are arranged in the order of the elements from top to bottom in table 1. The surface numbers 1 and 2 are the object side surface S1 and the image side surface S2 of the first lens element L1, respectively, i.e., the surface with the smaller surface number is the object side surface and the surface with the larger surface number is the image side surface in the same lens element. The radius Y in table 1 is the radius of curvature of the object side or image side of the corresponding plane number at the optical axis. The first value in the "thickness" parameter row of the first lens element is the thickness of the lens element on the optical axis, and the second value is the distance from the image side of the lens element to the object side of the latter lens element on the optical axis. Table 2 is a table of related parameters of the aspherical surface of each lens in table 1, where K is a conic constant, ai is a coefficient corresponding to the i-th higher order term in the aspherical surface type formula.
TABLE 1
Note that f is a focal length of the optical imaging system 10, FNO is an f-number of the optical imaging system 10, FOV is a field angle of the optical imaging system 10, and TTL is a distance from the object side surface S1 of the first lens L1 to the image plane S17 on the optical axis.
TABLE 2
Second embodiment
Referring to fig. 3 and 4, the optical imaging system 10 of the second embodiment includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, a sixth lens element L6 with positive refractive power, and a seventh lens element L7 with negative refractive power. Fig. 4 is a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the optical imaging system 10 in the second embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength of 587.5618 nm.
The object-side surface S1 of the first lens element L1 is concave at the optical axis, the image-side surface S2 is concave at the optical axis, the object-side surface S3 of the second lens element L2 is convex at the optical axis, the image-side surface S4 is concave at the optical axis, the object-side surface S5 of the third lens element L3 is concave at the optical axis, the image-side surface S6 is convex at the optical axis, the object-side surface S7 of the fourth lens element L4 is convex at the optical axis, the image-side surface S8 is convex at the optical axis, the object-side surface S9 of the fifth lens element L5 is concave at the optical axis, the image-side surface S10 is concave at the optical axis, the object-side surface S11 of the sixth lens element L6 is convex at the optical axis, the image-side surface S12 is convex at the optical axis, the object-side surface S13 of the seventh lens element L7 is convex at the optical axis, and the image-side surface S14 is concave at the optical axis.
The object-side surface S1 of the first lens element L1 is convex at the circumference, the image-side surface S2 is concave at the circumference, the object-side surface S3 of the second lens element L2 is concave at the circumference, the image-side surface S4 is concave at the circumference, the object-side surface S5 of the third lens element L3 is concave at the circumference, the image-side surface S6 is convex at the circumference, the object-side surface S7 of the fourth lens element L4 is convex at the circumference, the image-side surface S8 is convex at the circumference, the object-side surface S9 of the fifth lens element L5 is concave at the circumference, the image-side surface S10 is concave at the circumference, the object-side surface S11 of the sixth lens element L6 is convex at the circumference, the image-side surface S12 is convex at the circumference, the object-side surface S13 of the seventh lens element L7 is concave at the circumference, and the image-side surface S14 is convex at the circumference.
The stop STO is disposed between the third lens L3 and the fourth lens L4.
In the second embodiment, the optical imaging system 10 satisfies the following condition ：FOV＝112°,FNO＝2.35,f＝1.40mm,Almax＝30°,SD1/ImgH＝0.562,FOV/f＝80.08°/mm,SD1/AT12＝4.403,(|R62|+|R72|)/f＝0.642,(|f6|+|f7|)/f＝1.890,(|CT3|+|CT4|+|CT5|)/BF＝1.591,|R71|/|f7|＝0.643,AT45/ET45＝0.953.
The reference wavelength in the second embodiment is 587nm, and the optical imaging system 10 in the second embodiment satisfies the conditions of the following table. The definition of each parameter can be obtained by the first embodiment, and will not be described herein.
TABLE 3 Table 3
Note that f is a focal length of the optical imaging system 10, FNO is an f-number of the optical imaging system 10, FOV is a field angle of the optical imaging system 10, and TTL is a distance from the object side surface S1 of the first lens L1 to the image plane S17 on the optical axis.
TABLE 4 Table 4
Third embodiment
Referring to fig. 5 and 6, the optical imaging system 10 of the third embodiment includes, in order from an object side to an image side, a first lens element L1 with positive refractive power, a second lens element L2 with negative refractive power, a third lens element L3 with positive refractive power, a fourth lens element L4 with negative refractive power, a fifth lens element L5 with positive refractive power, a sixth lens element L6 with positive refractive power, and a seventh lens element L7 with negative refractive power. Fig. 6 is a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the optical imaging system 10 in the third embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength of 587.5618 nm.
The object-side surface S1 of the first lens element L1 is concave at the optical axis, the image-side surface S2 is concave at the optical axis, the object-side surface S3 of the second lens element L2 is convex at the optical axis, the image-side surface S4 is concave at the optical axis, the object-side surface S5 of the third lens element L3 is convex at the optical axis, the image-side surface S6 is convex at the optical axis, the object-side surface S7 of the fourth lens element L4 is convex at the optical axis, the image-side surface S8 is convex at the optical axis, the object-side surface S9 of the fifth lens element L5 is concave at the optical axis, the image-side surface S10 is concave at the optical axis, the object-side surface S11 of the sixth lens element L6 is concave at the optical axis, the image-side surface S12 is convex at the optical axis, the object-side surface S13 of the seventh lens element L7 is convex at the optical axis, and the image-side surface S14 is concave at the optical axis.
The object-side surface S1 of the first lens element L1 is convex at the circumference, the image-side surface S2 is convex at the circumference, the object-side surface S3 of the second lens element L2 is concave at the circumference, the image-side surface S4 is convex at the circumference, the object-side surface S5 of the third lens element L3 is concave at the circumference, the image-side surface S6 is convex at the circumference, the object-side surface S7 of the fourth lens element L4 is convex at the circumference, the image-side surface S8 is concave at the circumference, the object-side surface S9 of the fifth lens element L5 is convex at the circumference, the image-side surface S10 is concave at the circumference, the object-side surface S11 of the sixth lens element L6 is concave at the circumference, the image-side surface S12 is convex at the circumference, the object-side surface S13 of the seventh lens element L7 is concave at the circumference, and the image-side surface S14 is convex at the circumference.
The stop STO is disposed between the third lens L3 and the fourth lens L4.
In the third embodiment, the optical imaging system 10 satisfies the following condition ：FOV＝116°,FNO＝2.30,f＝1.36mm,Almax＝30°,SD1/ImgH＝0.562,FOV/f＝85.48°/mm,SD1/AT12＝6.022,(|R62|+|R72|)/f＝0.661,(|f6|+|f7|)/f＝1.930,(|CT3|+|CT4|+|CT5|)/BF＝1.533,|R71|/|f7|＝0.670,AT45/ET45＝0.932.
The reference wavelength in the third embodiment is 587nm, and the optical imaging system 10 in the third embodiment satisfies the conditions of the following table.
TABLE 5
Note that f is a focal length of the optical imaging system 10, FNO is an f-number of the optical imaging system 10, FOV is a field angle of the optical imaging system 10, and TTL is a distance from the object side surface S1 of the first lens L1 to the image plane S17 on the optical axis.
TABLE 6
Fourth embodiment
Referring to fig. 7 and 8, the optical imaging system 10 of the fourth embodiment includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with negative refractive power, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, a sixth lens element L6 with positive refractive power, and a seventh lens element L7 with negative refractive power. Fig. 8 is a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the optical imaging system 10 in the fourth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength of 587.5618 nm.
The object-side surface S1 of the first lens element L1 is concave at the optical axis, the image-side surface S2 is convex at the optical axis, the object-side surface S3 of the second lens element L2 is convex at the optical axis, the image-side surface S4 is concave at the optical axis, the object-side surface S5 of the third lens element L3 is convex at the optical axis, the image-side surface S6 is convex at the optical axis, the object-side surface S7 of the fourth lens element L4 is convex at the optical axis, the image-side surface S8 is convex at the optical axis, the object-side surface S9 of the fifth lens element L5 is concave at the optical axis, the image-side surface S10 is concave at the optical axis, the object-side surface S11 of the sixth lens element L6 is concave at the optical axis, the image-side surface S12 is convex at the optical axis, the object-side surface S13 of the seventh lens element L7 is convex at the optical axis, and the image-side surface S14 is concave at the optical axis.
The object-side surface S1 of the first lens element L1 is convex at the circumference, the image-side surface S2 is concave at the circumference, the object-side surface S3 of the second lens element L2 is concave at the circumference, the image-side surface S4 is concave at the circumference, the object-side surface S5 of the third lens element L3 is convex at the circumference, the image-side surface S6 is convex at the circumference, the object-side surface S7 of the fourth lens element L4 is convex at the circumference, the image-side surface S8 is convex at the circumference, the object-side surface S9 of the fifth lens element L5 is concave at the circumference, the image-side surface S10 is concave at the circumference, the object-side surface S11 of the sixth lens element L6 is convex at the circumference, the image-side surface S12 is convex at the circumference, the object-side surface S13 of the seventh lens element L7 is concave at the circumference, and the image-side surface S14 is convex at the circumference.
The stop STO is disposed between the third lens L3 and the fourth lens L4.
In the fourth embodiment, the optical imaging system 10 satisfies the following condition ：FOV＝120°,FNO＝2.25,f＝1.30mm,Almax＝30°,SD1/ImgH＝0.562,FOV/f＝92.02°/mm,SD1/AT12＝6.055,(|R62|+|R72|)/f＝0.939,(|f6|+|f7|)/f＝2.399,(|CT3|+|CT4|+|CT5|)/BF＝1.669,AT45/ET45＝0.838.
The reference wavelength in the fourth embodiment is 587nm, and the optical imaging system 10 in the fourth embodiment satisfies the conditions of the following table.
TABLE 7
Note that f is a focal length of the optical imaging system 10, FNO is an f-number of the optical imaging system 10, FOV is a field angle of the optical imaging system 10, and TTL is a distance from the object side surface S1 of the first lens L1 to the image plane S17 on the optical axis.
TABLE 8
Fifth embodiment
Referring to fig. 9 and 10, the optical imaging system 10 of the fifth embodiment includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with negative refractive power, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, a sixth lens element L6 with positive refractive power, and a seventh lens element L7 with negative refractive power. Fig. 10 is a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the optical imaging system 10 in the fifth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength of 587.5618 nm.
The object-side surface S1 of the first lens element L1 is concave at the optical axis, the image-side surface S2 is concave at the optical axis, the object-side surface S3 of the second lens element L2 is convex at the optical axis, the image-side surface S4 is concave at the optical axis, the object-side surface S5 of the third lens element L3 is convex at the optical axis, the image-side surface S6 is convex at the optical axis, the object-side surface S7 of the fourth lens element L4 is convex at the optical axis, the image-side surface S8 is convex at the optical axis, the object-side surface S9 of the fifth lens element L5 is concave at the optical axis, the image-side surface S10 is convex at the optical axis, the object-side surface S11 of the sixth lens element L6 is concave at the optical axis, the image-side surface S12 is convex at the optical axis, the object-side surface S13 of the seventh lens element L7 is convex at the optical axis, and the image-side surface S14 is concave at the optical axis.
The object-side surface S1 of the first lens element L1 is convex at the circumference, the image-side surface S2 is concave at the circumference, the object-side surface S3 of the second lens element L2 is concave at the circumference, the image-side surface S4 is concave at the circumference, the object-side surface S5 of the third lens element L3 is convex at the circumference, the image-side surface S6 is convex at the circumference, the object-side surface S7 of the fourth lens element L4 is convex at the circumference, the image-side surface S8 is convex at the circumference, the object-side surface S9 of the fifth lens element L5 is concave at the circumference, the image-side surface S10 is concave at the circumference, the object-side surface S11 of the sixth lens element L6 is convex at the circumference, the image-side surface S12 is concave at the circumference, the object-side surface S13 of the seventh lens element L7 is concave at the circumference, and the image-side surface S14 is convex at the circumference.
The stop STO is disposed between the third lens L3 and the fourth lens L4.
In the fifth embodiment, the optical imaging system 10 satisfies the following condition ：FOV＝124°,FNO＝2.20,f＝1.25mm,Almax＝30°,SD1/ImgH＝0.560,FOV/f＝99.28°/mm,SD1/AT12＝3.663,(|R62|+|R72|)/f＝0.785,(|f6|+|f7|)/f＝2.251,(|CT3|+|CT4|+|CT5|)/BF＝1.719,AT45/ET45＝1.288.
The reference wavelength in the fifth embodiment is 587nm, and the optical imaging system 10 in the fifth embodiment satisfies the conditions of the following table.
TABLE 9
Note that f is a focal length of the optical imaging system 10, FNO is an f-number of the optical imaging system 10, FOV is a field angle of the optical imaging system 10, and TTL is a distance from the object side surface S1 of the first lens L1 to the image plane S17 on the optical axis.
Table 10
Referring to fig. 11, an image capturing module 100 according to an embodiment of the present invention includes an optical imaging system 10 and a photosensitive element 20, wherein the photosensitive element 20 is disposed on an image side of the optical imaging system 10.
Specifically, the photosensitive element 20 may be a complementary metal oxide semiconductor (CMOS, complementary Metal Oxide Semiconductor) image sensor or a Charge-coupled Device (CCD).
The optical imaging system 10 in the image capturing module 100 according to the embodiment of the present invention, through the above reasonable lens configuration, increases the field angle while satisfying the micro design, and improves the relative brightness and the view finding area, and the optical imaging system 10 can achieve higher pixels and good image quality.
Referring to fig. 12, an electronic device 1000 according to an embodiment of the invention includes a housing 200 and an image capturing module 100, wherein the image capturing module 100 is mounted on the housing 200.
The electronic device 1000 according to the embodiment of the present invention includes, but is not limited to, an electronic device supporting imaging, such as a smart phone, a tablet computer, a notebook computer, an electronic book reader, a Portable Multimedia Player (PMP), a portable phone, a video phone, a digital still camera, an ambulatory medical device, and a wearable device.
The optical imaging system 10 in the electronic device 1000 of the above embodiment, through the above reasonable lens configuration, increases the angle of view while satisfying the micro design, and increases the relative brightness, and improves the viewing area, and the optical imaging system 10 can achieve higher pixels and good image quality.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897095A (en) * | 2020-08-13 | 2020-11-06 | 南昌欧菲精密光学制品有限公司 | Optical system, lens module and electronic equipment |
| CN212540864U (en) * | 2020-09-11 | 2021-02-12 | 江西晶超光学有限公司 | Optical imaging system, imaging module and electronic device |
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Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Jiangxi Province Patentee after: Jiangxi Oufei Optics Co.,Ltd. Country or region after: China Address before: No. 699 Tianxiang North Avenue, Nanchang High tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: Jiangxi Jingchao optics Co.,Ltd. Country or region before: China |
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