CN109270664B - An optical imaging lens and a camera device using the optical imaging lens - Google Patents
An optical imaging lens and a camera device using the optical imaging lens Download PDFInfo
- Publication number
- CN109270664B CN109270664B CN201811474255.6A CN201811474255A CN109270664B CN 109270664 B CN109270664 B CN 109270664B CN 201811474255 A CN201811474255 A CN 201811474255A CN 109270664 B CN109270664 B CN 109270664B
- Authority
- CN
- China
- Prior art keywords
- lens
- image
- optical imaging
- imaging lens
- lens element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- G—PHYSICS
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
本发明公开了一种光学成像镜头及应用该光学成像镜头的摄像装置，沿光轴由物侧到像侧依次包括光圈、第一透镜、第二透镜、第三透镜、第四透镜、第五透镜及第六透镜；通过限定第一透镜像侧面有效半径和第二透镜像侧面有效半径的差值，在实现镜头的头部小型化的同时保持系统的高像素要求，从而满足了全面屏手机的结构要求；并且合理配置第一透镜与第二透镜中心厚度的比值，能够降低光学成像镜头的敏感度以提升制作良率。
The present invention discloses an optical imaging lens and a camera device using the optical imaging lens, which comprises an aperture, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence from the object side to the image side along the optical axis; by limiting the difference between the effective radius of the image side of the first lens and the effective radius of the image side of the second lens, the high pixel requirement of the system is maintained while the miniaturization of the lens head is achieved, thereby meeting the structural requirements of a full-screen mobile phone; and by reasonably configuring the ratio of the center thickness of the first lens to that of the second lens, the sensitivity of the optical imaging lens can be reduced to improve the production yield.
Description
Technical Field
The invention relates to the technical field of optical lens group equipment, in particular to an optical imaging lens and a camera device using the optical imaging lens.
Background
With the rapid development of technologies, especially electronic technologies, portable mobile electronic devices have been rapidly popularized, and the development of image modules applied to electronic devices is promoted. The image module is applied more and more widely, such as smart phones, tablet computers, automobile data recorders, and motion cameras, and the miniaturization demand of the image module is becoming higher and higher due to the trend of thin and light electronic products such as smart phones. With the advancement of semiconductor manufacturing process technology, the pixel size of the photosensitive device has been reduced, and the optical imaging lens loaded in the image module also needs to be correspondingly reduced in length.
On one hand, the conventional light and thin optical imaging lens mostly adopts a four-piece type and five-piece type lens structure, but the four-piece type and five-piece type lens structure has limitations in the aspects of refractive power distribution, aberration astigmatism correction, sensitivity distribution and the like, and cannot further meet the imaging requirements of higher specifications. With the development of technology and the increasing demand of diversified users, five-lens, six-lens and seven-lens structures are gradually emerging in the design of optical imaging systems to achieve better imaging quality. On the other hand, in order to provide sufficient illuminance to the imaging surface of the optical imaging system, a large aperture characteristic is one of the currently indispensable elements. Therefore, an optical imaging system with a large aperture and excellent optical characteristics is needed.
On the other hand, with the continuous improvement of mobile phone design and process level, more and more mobile phone terminal devices use ultra-narrow frame, frameless and even full screen design. Especially, the full screen design has a very large screen occupation ratio, gives consumers a very large visual impact, and becomes a big selling point for terminal manufacturers. Therefore, there is a need for an optical imaging lens that is compact in head size while maintaining high pixel count to meet the structural requirements of full-screen cell phones.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an optical imaging lens and a camera device using the optical imaging lens, which have the characteristics of large aperture, high pixel, high resolution, excellent field angle and the like, can provide good imaging quality, meet the application requirement, miniaturize the lens head and meet the structural requirement of a full-screen mobile phone.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an optical imaging lens comprises an aperture, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side in sequence along an optical axis, wherein each of the first lens to the sixth lens is provided with an object side surface facing an object side and an image side surface facing the image side; the optical imaging lens also comprises an imaging surface positioned at the image side for imaging a shot object;
the first lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof, and both the object-side surface and the image-side surface thereof being aspheric;
the second lens element with negative refractive power has an object-side surface being convex at a paraxial region; the object side surface and the image side surface are both aspheric surfaces;
the third lens element with refractive power has an object-side surface being convex at a paraxial region and an image-side surface being convex at a paraxial region; the object side surface and the image side surface are both aspheric surfaces;
the fourth lens element with refractive power has an object-side surface and an image-side surface which are both aspheric;
the fifth lens element with refractive power has an object-side surface and an image-side surface which are both aspheric;
the sixth lens element with negative refractive power has a concave object-side surface at a paraxial region and a concave image-side surface at a paraxial region, and has at least one inflection point on the image-side surface; the object side surface and the image side surface are both aspheric surfaces;
wherein the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element do not move relative to each other on the optical axis, and any two adjacent lens elements among the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element have a space on the optical axis;
the effective radius of the image side surface of the first lens is SD12, the effective radius of the image side surface of the second lens is SD22, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, and the optical imaging lens satisfies the following relation:
-0.1≤SD12-SD22≤0.25；
0.2≤CT2/CT1≤0.6。
optionally, the fifth lens element has a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region.
Optionally, a radius of curvature of the image-side surface of the sixth lens element is R12, a focal length of the optical imaging lens is f, and the optical imaging lens satisfies the following relation:
0<R12/f≤7。
optionally, an entrance pupil diameter of the optical imaging lens is EPD, a distance on the optical axis from the image-side surface of the sixth lens element to the imaging plane is BL, and the optical imaging lens satisfies the following relation:
2<EPD/BL<4.5。
optionally, a focal length of the optical imaging lens is f, a radius of curvature of the object-side surface of the fourth lens element is R7, a radius of curvature of the image-side surface of the fourth lens element is R8, and the optical imaging lens satisfies the following relation:
0<f/|R7|+f/|R8|<1.5。
optionally, a vertical distance between an inflection point of an image-side surface of the sixth lens element and an optical axis is Yc62, a focal length of the optical imaging lens is f, and the optical imaging lens satisfies the following relation:
0.1<Yc62/f<0.6。
optionally, the focal length of the optical imaging lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, and the optical imaging lens satisfies the following relation:
0.4<(f/f1)+(f/f2)<1.5。
optionally, a focal length of the optical imaging lens is f, an air gap on an optical axis of the fourth lens element to the fifth lens element is T4, and the optical imaging lens satisfies the following relation:
0.02≤T45/f≤0.2。
optionally, a total thickness of the first lens element to the sixth lens element on an optical axis is ACT, an axial distance between an object-side surface of the first lens element and an image-side surface of the sixth lens element is ALT, and the optical imaging lens satisfies the following relation:
0.6<ACT/ALT<0.9。
the invention also provides an image pickup device which comprises the electronic photosensitive element and the optical imaging lens, wherein the electronic photosensitive element is arranged on the imaging surface of the optical imaging lens.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an optical imaging lens and a camera device using the same, which have the characteristics of large aperture, high pixel, high resolution, excellent field angle and the like, can provide good imaging quality and meet application requirements. The difference value of the effective radius of the image side surface of the first lens and the effective radius of the image side surface of the second lens is limited, so that the high pixel requirement of a system is kept while the head of a lens is miniaturized, and the structural requirement of a full-screen mobile phone is met; and the ratio of the central thicknesses of the first lens and the second lens is reasonably configured, so that the sensitivity of the optical imaging lens can be reduced to improve the manufacturing yield.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of an optical imaging lens according to a first embodiment of the present invention;
fig. 2 is a graph illustrating astigmatism and distortion curves of an optical imaging lens according to an embodiment of the invention;
fig. 3 is a spherical aberration curve chart of an optical imaging lens according to a first embodiment of the invention;
fig. 4 is a schematic diagram of an optical imaging lens according to a second embodiment of the present invention;
fig. 5 is a graph illustrating astigmatism and distortion curves of an optical imaging lens according to a second embodiment of the invention in order from left to right;
fig. 6 is a spherical aberration curve chart of an optical imaging lens according to a second embodiment of the present invention;
fig. 7 is a schematic view of an optical imaging lens according to a third embodiment of the present invention;
fig. 8 is a graph illustrating astigmatism and distortion curves of an optical imaging lens according to a third embodiment of the invention in order from left to right;
fig. 9 is a spherical aberration curve chart of an optical imaging lens according to a third embodiment of the present invention;
fig. 10 is a schematic view showing an optical imaging lens according to a fourth embodiment of the present invention;
fig. 11 is a graph illustrating astigmatism and distortion curves of an optical imaging lens according to a fourth embodiment of the invention from left to right in sequence;
fig. 12 is a spherical aberration curve chart of an optical imaging lens according to a fourth embodiment of the present invention;
fig. 13 is a schematic view showing an optical imaging lens according to a fifth embodiment of the present invention;
fig. 14 is a graph illustrating astigmatism and distortion curves of an optical imaging lens according to a fifth embodiment of the invention from left to right in sequence;
fig. 15 is a spherical aberration curve chart of an optical imaging lens according to a fifth embodiment of the present invention;
fig. 16 is a schematic view showing an optical imaging lens according to a sixth embodiment of the present invention;
fig. 17 is a graph illustrating astigmatism and distortion curves of an optical imaging lens according to a sixth embodiment of the invention in order from left to right;
fig. 18 is a spherical aberration curve chart of an optical imaging lens according to a sixth embodiment of the present invention;
fig. 19 is a schematic diagram illustrating a vertical distance Yc62 between an inflection point of an image-side surface of a sixth lens element and an optical axis in an optical imaging lens according to an embodiment of the present invention.
In the above figures:
a first lens: 110. 210, 310, 410, 510, 610; an object-side surface: 111. 211, 311, 411, 511, 611; image-side surface: 112, 212, 312, 412, 512, 612;
second lens: 120, 220, 320, 420, 520, 620; object side surfaces 121, 221, 321, 421, 521, 621; image-side surface: 122, 222, 322, 422, 522, 622;
130, 230, 330, 430, 530, 630 of the third lens; object side surfaces 131, 231, 331, 431, 531, 631; image-side surface: 132, 232, 332, 432, 532, 632;
fifth lens element: 150, 250, 350, 450, 550, 650; object side surfaces 151, 251, 351, 451, 551, 651; image-side surface: 152, 252, 352, 452, 552, 652;
sixth lens element: 160, 260, 360, 460, 560, 660; object side surfaces 161, 261, 361, 461, 561, 661; image-side surface: 162, 262, 362, 462, 562, 662; inflection point of image-side surface of the sixth lens: 1601;
an infrared filter: 170. 270, 370, 470, 570, 670; imaging surface: 180. 280, 380, 480, 580, 680; aperture: 101. 201, 301, 401, 501, 601;
SD 12: an effective radius of an image-side surface of the first lens;
SD 22: an effective radius of an image-side surface of the second lens;
f: the focal length of the optical imaging lens;
f 1: a focal length of the first lens;
f 2: a focal length of the second lens;
t45: air gaps on the optical axis of the fourth lens to the fifth lens;
EPD: an entrance pupil diameter;
CT 1: a thickness of the first lens on the optical axis;
CT 2: a thickness of the second lens on the optical axis;
BL: the distance between the image side surface of the sixth lens and an imaging surface on the optical axis;
r7: a radius of curvature of the object-side surface of the fourth lens;
r8: a radius of curvature of an image-side surface of the fourth lens element;
r12: a radius of curvature of an image-side surface of the sixth lens element;
yc 62: the vertical distance between the inflection point of the surface of the image side of the sixth lens and the optical axis;
ACT: the sum of the thicknesses of the lenses of the first lens to the sixth lens on the optical axis;
ALT: the distance between the object side surface of the first lens and the image side surface of the sixth lens is on the optical axis.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
the invention provides an optical imaging lens, which sequentially comprises an aperture, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis, wherein each of the first lens to the sixth lens is provided with an object side surface facing an object side and an image side surface facing an image side; the optical imaging lens further comprises an imaging surface which is positioned at the image side and used for imaging a shot object, and an infrared filter which is arranged between the sixth lens and the imaging surface, wherein the infrared filter does not influence the focal length of the optical imaging lens.
The optical imaging lens comprises six lenses with refractive power, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens do not move relatively on an optical axis, and any two adjacent lenses among the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens have a space on the optical axis, so that the assembly of the lenses is facilitated, and the manufacturing yield is improved.
The first lens element with positive refractive power has an object-side surface being convex at a paraxial region, and the configuration of the positive refractive power can be adjusted to further enhance and shorten the total optical length; the image side surface of the optical lens can be concave at the paraxial region, so that the low-order aberration can be effectively adjusted. The object side surface and the image side surface of the first lens are both aspheric.
The second lens element has negative refractive power, which is beneficial to correcting the aberration generated by the first lens element. The object-side surface of the lens is convex at the position close to the optical axis, so that the correction of the astigmatism of the lens is enhanced; the image side surface of the imaging optical lens can be concave at a paraxial region, which is beneficial to adjusting light paths of different wave bands, enables image points to be more concentrated, and can effectively correct aberration of the imaging optical lens. The object side surface and the image side surface of the second lens are both aspheric.
The third lens element with positive refractive power has an object-side surface being convex at a paraxial region and an image-side surface being convex at a paraxial region, and can effectively correct paraxial spherical aberration and reduce peripheral astigmatic field curvature. The object side surface and the image side surface of the third lens are both aspheric.
The fourth lens element with negative refractive power can correct astigmatism; the image side surface may be concave at a paraxial region and may have at least one inflection point, which may shorten the back focus, make the lens shape smoother, shorten the total optical length, and provide better assembly configuration. The object side surface and the image side surface of the fourth lens are both aspheric.
The fifth lens element with positive refractive power has an object-side surface being concave at a paraxial region thereof and an image-side surface being convex at the paraxial region thereof, and can effectively correct astigmatism of the optical imaging lens assembly. The object side surface and the image side surface of the fifth lens are both aspheric.
The sixth lens element with negative refractive power has a concave object-side surface at a paraxial region and a concave image-side surface at a paraxial region, and has at least one inflection point on the image-side surface, which helps to keep the principal point of the optical imaging lens away from the image-side end, thereby effectively shortening the total track length of the optical imaging lens, facilitating miniaturization of the optical imaging lens, and further correcting off-axis aberration to improve the peripheral imaging quality. The object side surface and the image side surface of the sixth lens are both aspheric.
The optical imaging lens and the lens are made of materials with high light transmittance and excellent processability, for example, the lens is made of plastic, so that the material cost is low, the material is easy to obtain, and the production cost is favorably reduced.
It should be noted that the refractive power refers to the refractive power of the optical system for reflecting the incident parallel light beam. The optical system has positive refractive power, which indicates that the refraction of the light rays is convergent; the optical system has negative refractive power, indicating that the refraction of light is divergent.
It is to be understood that, in the above description, the object-side surface of the lens is convex, which means: making a tangent plane at any point on the object-side surface of the lens, wherein the surface is always on the right side of the tangent plane, and the curvature radius of the surface is positive; on the contrary, the object side surface is concave with a negative curvature radius. The image-side surface being convex means: making a tangent plane at any point on the surface of the image side of the lens, wherein the surface is always on the left side of the tangent plane, and the curvature radius of the surface is negative; on the contrary, the image side surface is a concave surface with a positive radius of curvature. If any point on the object-side surface or the image-side surface of the lens is taken as a tangent plane, and the surface has both the portion on the left side and the portion on the right side of the tangent plane, the surface has an inflection point, and the above method is still applicable to the determination of the irregularity of the object-side surface and the image-side surface at the paraxial region.
In the optical imaging lens disclosed by the invention, if the lens surface is a convex surface and the position of the convex surface is not defined, the convex surface can be positioned at the position close to the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located at the position of the lens surface near the optical axis. If the refractive power or focal length of the lens element does not define the position of the lens region, it means that the refractive power or focal length of the lens element can be the refractive power or focal length of the lens element at the paraxial region.
In the structure, through reasonable material selection and refractive power collocation, when specific conditions are met, the whole optical lens has better light converging capability, meets the requirement of high pixel, and effectively reduces the total length of the optical imaging lens, thereby achieving the purpose of lightness and thinness.
Specifically, the effective radius of the image-side surface of the first lens is SD12, the effective radius of the image-side surface of the second lens is SD22, the optical thickness of the first lens is CT1, the optical thickness of the second lens is CT2, and the optical imaging lens satisfies the following relation: -0.1. ltoreq. SD12-SD 22. ltoreq.0.25; and 0.2-0.6 of CT2/CT 1.
The conditions are as follows: SD12-SD22 are less than or equal to 0.25, the head of the optical imaging lens can be miniaturized, the large image height of the lens can be kept, high pixels can be guaranteed, and therefore the structural requirements of a full-screen mobile phone are met. In the above conditions, if the lower limit is exceeded, the head of the lens is too large and does not meet the design standard of the full-face screen; if the maximum value is exceeded, the aberration of the lens, such as astigmatism and spherical aberration, becomes worse, and the imaging quality requirement cannot be satisfied.
The conditions are as follows: the thickness ratio of the first lens to the second lens is more than or equal to 0.2 and less than or equal to 0. 2/1, so that the first lens and the second lens can be reasonably arranged, the deformation caused by uneven cooling after the first lens is formed due to over-thick thickness is avoided, or the damage caused by over-thin thickness of the second lens is avoided, and the sensitivity is reduced to improve the manufacturing yield.
Specifically, the curvature radius of the image side surface of the sixth lens element is R12, the focal length of the optical imaging lens is f, and the optical imaging lens satisfies the following relation: the ratio of 0< R12/f is less than or equal to 7, so that the surface shape of the image-side surface of the sixth lens element at the position of the near optical axis is adjusted, the shape change of the sixth lens element is reduced, the generation of stray light is reduced, and the lens forming performance is improved.
Specifically, the optical imaging lens has an entrance pupil diameter EPD, a distance BL from the image-side surface of the sixth lens element to the optical axis, and satisfies the following relation: 2< EPD/BL < 4.5. This condition contributes to a shorter back focus in the configuration of a large aperture to further miniaturize the lens.
Specifically, the optical imaging lens has a focal length f, a radius of curvature of the object-side surface of the fourth lens element is R7, a radius of curvature of the image-side surface of the fourth lens element is R8, and the optical imaging lens satisfies the following relation:
0< f/| R7| + f/| R8| <1.5, thereby adjusting the surface shape of the fourth lens element to correct off-axis aberration, and enabling the light to have proper incident and emergent angles on the fourth lens element, which is helpful to increase the area of an imaging surface and reduce the outer diameter of the front lens element of the lens.
Specifically, the vertical distance between the inflection point of the image-side surface of the sixth lens element and the optical axis is Yc62, the focal length of the optical imaging lens is f, and the optical imaging lens satisfies the following relation: 0.1< Yc62/f < 0.6. Satisfying this condition can suppress the angle that the light of off-axis visual field incides on image sensing element effectively, makes the response efficiency of photosensitive element promote, and then increases the formation of image quality.
Specifically, the optical imaging lens has a focal length f, the first lens has a focal length f1, the second lens has a focal length f2, and the optical imaging lens satisfies the following relation: 0.4< (f/f1) + (f/f2) <1.5, thereby harmonizing the refractive power configurations of the first and second lenses to avoid excessive aberration and reduced manufacturability due to excessive refractive power of the first lens.
In one preferred embodiment based on the above conditions, the optical imaging lens satisfies the following relation: 0.5< (f/f1) + (f/f2) <1.
Specifically, the optical imaging lens has a focal length f, and an air gap on the optical axis between the fourth lens element and the fifth lens element is T45, and the optical imaging lens satisfies the following relation: t45/f is more than or equal to 0.02 and less than or equal to 0.2. Satisfying this condition enables the astigmatism of the optical imaging lens to be corrected well.
Specifically, the total thickness of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element is ACT, the distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is ALT, and the optical imaging lens satisfies the following relation: 0.6< ACT/ALT <0.9, so that the thickness of the lens is properly adjusted, the lens is beneficial to manufacturing and molding, and the manufacturing yield can be improved; in addition, the set range meeting the condition is beneficial to shortening the total length of the optical imaging lens and maintaining the miniaturization of the optical imaging lens so as to be applied to portable electronic products.
Example one
Referring to fig. 1 to 3, fig. 1 is a schematic diagram illustrating an optical imaging lens according to a first embodiment of the invention, fig. 2 is graphs of astigmatism and distortion of the optical imaging lens according to the first embodiment of the invention in order from left to right, and fig. 3 is a graph of spherical aberration of the optical imaging lens according to the first embodiment of the invention.
In fig. 1, the optical imaging lens includes, in order from an object side to an image side, an aperture stop 101, a first lens element 110, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, a sixth lens element 160 and an image plane 180; in addition, the optical imaging lens further includes an infrared filter 170 disposed between the sixth lens element 160 and the image plane 180, and the infrared filter 170 does not affect the focal length of the optical imaging lens.
The first lens element 110 with positive refractive power has an object-side surface 111 being convex at a paraxial region thereof and an image-side surface 112 being concave at a paraxial region thereof.
The second lens element 120 with negative refractive power has a convex object-side surface 121 at a paraxial region and a concave image-side surface 122 at a paraxial region, and both surfaces are aspheric.
The third lens element 130 with positive refractive power has an object-side surface 131 being convex at a paraxial region thereof and an image-side surface 132 being convex at a paraxial region thereof, and both surfaces thereof are aspheric.
The fourth lens element 140 with negative refractive power has a concave object-side surface 141 at a paraxial region and a concave image-side surface 142 at a paraxial region, and the image-side surface 142 has at least one inflection point, wherein the object-side surface 141 and the image-side surface 142 are aspheric.
The fifth lens element 150 with positive refractive power has a concave object-side surface 151 at a paraxial region and a convex image-side surface 152 at a paraxial region, and both surfaces are aspheric.
The sixth lens element 160 with negative refractive power has a concave object-side surface 161 at a paraxial region and a concave image-side surface 162 at a paraxial region, and both surfaces are aspheric.
Please refer to the following tables 1-1, 1-2 and 1-3.
Table 1-1 shows the detailed structural data of the embodiment, wherein the radius of curvature, the thickness, and the focal length are in millimeters, f is the focal length of the optical imaging lens, Fno is the aperture value, and FOV is the maximum field angle, and surfaces 0 to 16 sequentially represent surfaces from the object side to the image side, wherein surfaces 1 to 13 sequentially represent the aperture stop 100, the first lens object-side surface 111, the first lens image-side surface 112, the second lens object-side surface 121, the second lens image-side surface 122, the third lens object-side surface 131, the third lens image-side surface 132, the fourth lens object-side surface 141, the fourth lens object-side surface 142, the fifth lens object-side surface 151, the fifth lens image-side surface 152, the sixth lens object-side surface 161, and the sixth lens image-side surface 162.
Each lens in the optical imaging lens adopts an aspheric surface design, and an aspheric surface curve equation of each lens is expressed as follows:
wherein X is the relative height of a point on the aspheric surface which is Y away from the optical axis and a tangent plane tangent to the vertex on the aspheric optical axis; r is a curvature radius; y is the vertical distance between a point on the aspheric curve and the optical axis; k is the cone coefficient; ai is an ith order aspheric coefficient.
Table 1-2 shows aspheric coefficient data of the first embodiment, wherein k represents the cone coefficient in the aspheric curve equation, and A4-A20 represents the 4 th to 20 th order aspheric coefficients of each surface.
Tables 1 to 3 show the conditions satisfied by the optical imaging lens according to the first embodiment. In addition, the following tables of the embodiments correspond to the schematic diagrams and graphs of the embodiments, and the definitions of the data in the tables are the same as those in tables 1-1, tables 1-2 and tables 1-3 of the first embodiment, which are not repeated herein.
In addition, referring to fig. 19, fig. 19 is a schematic diagram illustrating a vertical distance Yc62 between an inflection point of an image-side surface of a sixth lens element and an optical axis of the optical imaging lens according to the embodiment of the present invention. Taking the first embodiment as an example, the vertical distance Yc62 between the inflection point of the image-side surface 162 of the sixth lens element 160 and the optical axis is added, and the vertical distance Yc62 between the inflection point of the image-side surface of the sixth lens element and the optical axis in the following embodiments is the same as that in the first embodiment and will not be repeated herein.
Example two
Based on the above embodiments, the second embodiment provides an optical imaging lens.
Referring to fig. 4 to 6, fig. 4 is a schematic diagram illustrating an optical imaging lens according to a second embodiment of the present disclosure, fig. 5 is a graph of astigmatism and distortion of the optical imaging lens according to the second embodiment of the present disclosure, in order from left to right, and fig. 6 is a graph of spherical aberration of the optical imaging lens according to the second embodiment of the present disclosure.
In fig. 4, the optical imaging lens includes, in order from an object side to an image side, an aperture stop 201, a first lens element 210, a second lens element 220, a third lens element 230, a fourth lens element 240, a fifth lens element 250, a sixth lens element 260 and an image plane 280; in addition, the optical imaging lens further includes an infrared filter 270 disposed between the sixth lens element 260 and the image plane 280, and the infrared filter 270 does not affect the focal length of the optical imaging lens.
The first lens element 210 with positive refractive power has a convex object-side surface 211 at a paraxial region and a concave image-side surface 212 at a paraxial region, and both surfaces are aspheric.
The second lens element 220 with negative refractive power has a convex object-side surface 221 at a paraxial region and a concave image-side surface 222 at a paraxial region, and both surfaces are aspheric.
The third lens element 230 with positive refractive power has an object-side surface 231 being convex at a paraxial region thereof and an image-side surface 232 being convex at a paraxial region thereof, and both surfaces thereof are aspheric.
The fourth lens element 240 with negative refractive power has an object-side surface 241 being convex at a paraxial region thereof and an image-side surface 242 being concave at a paraxial region thereof, and the image-side surface 242 has at least one inflection point, wherein the object-side surface 241 and the image-side surface 242 are aspheric.
The fifth lens element 250 with positive refractive power has a concave object-side surface 251 and a convex image-side surface 252 at a paraxial region, both surfaces being aspheric.
The sixth lens element 260 with negative refractive power has a concave object-side surface 261 and a concave image-side surface 262 at a paraxial region, both surfaces thereof being aspheric.
Please refer to the following Table 2-1, Table 2-2 and Table 2-3.
EXAMPLE III
Based on the above embodiments, the third embodiment provides an optical imaging lens.
Referring to fig. 7 to 9, fig. 7 is a schematic diagram illustrating an optical imaging lens according to a third embodiment of the present disclosure, fig. 8 is graphs of astigmatism and distortion of the optical imaging lens according to the third embodiment of the present disclosure in order from left to right, and fig. 9 is a graph of spherical aberration of the optical imaging lens according to the third embodiment of the present disclosure.
In fig. 7, the optical imaging lens includes, in order from an object side to an image side, an aperture stop 301, a first lens element 310, a second lens element 320, a third lens element 330, a fourth lens element 340, a fifth lens element 350, a sixth lens element 360 and an image plane 380; in addition, the optical imaging lens further includes an infrared filter 370 disposed between the sixth lens element 360 and the image plane 380, and the infrared filter 370 does not affect the focal length of the optical imaging lens.
The first lens element 310 with positive refractive power has a convex object-side surface 311 at a paraxial region and a concave image-side surface 312 at a paraxial region, and both surfaces are aspheric.
The second lens element 320 with negative refractive power has a convex object-side surface 321 at a paraxial region and a concave image-side surface 322 at a paraxial region, and both surfaces are aspheric.
The third lens element 330 with positive refractive power has an object-side surface 331 being convex at a paraxial region thereof and an image-side surface 332 being convex at a paraxial region thereof, and both surfaces thereof are aspheric.
The fourth lens element 340 with negative refractive power has a concave object-side surface 341 at a paraxial region and a convex image-side surface 342 at a paraxial region, and both the object-side surface 341 and the image-side surface 342 are aspheric.
The fifth lens element 350 with positive refractive power has a concave object-side surface 351 at a paraxial region and a convex image-side surface 352 at a paraxial region, and both surfaces are aspheric.
The sixth lens element 360 with negative refractive power has a concave object-side surface 361 at a paraxial region and a concave image-side surface 362 at a paraxial region, both surfaces being aspheric.
Please refer to the following Table 3-1, Table 3-2 and Table 3-3.
Example four
Based on the above embodiments, the fourth embodiment provides an optical imaging lens.
Referring to fig. 10 to 12, fig. 10 is a schematic diagram illustrating an optical imaging lens according to a fourth embodiment of the present disclosure, fig. 11 is graphs of astigmatism and distortion of the optical imaging lens according to the fourth embodiment of the present disclosure in order from left to right, and fig. 12 is a graph of spherical aberration of the optical imaging lens according to the fourth embodiment of the present disclosure.
In fig. 10, the optical imaging lens includes, in order from an object side to an image side, an aperture stop 401, a first lens element 410, a second lens element 420, a third lens element 430, a fourth lens element 440, a fifth lens element 450, a sixth lens element 460 and an image plane 480; in addition, the optical imaging lens further includes an infrared filter 470 disposed between the sixth lens element 460 and the image plane 480, and the infrared filter 470 does not affect the focal length of the optical imaging lens.
The first lens element 410 with positive refractive power has a convex object-side surface 411 and a concave image-side surface 412 at a paraxial region, wherein both surfaces are aspheric.
The second lens element 420 with negative refractive power has a convex object-side surface 421 at a paraxial region and a concave image-side surface 422 at a paraxial region, and both surfaces are aspheric.
The third lens element 430 with positive refractive power has a convex object-side surface 431 at a paraxial region and a convex image-side surface 432 at a paraxial region, and both surfaces are aspheric.
The fourth lens element 440 with negative refractive power has an object-side surface 441 being convex at a paraxial region thereof and an image-side surface 442 being concave at a paraxial region thereof, and the image-side surface 442 has at least one inflection point, wherein the object-side surface 441 and the image-side surface 442 are aspheric.
The fifth lens element 450 with positive refractive power has a concave object-side surface 451 at a paraxial region and a convex image-side surface 452 at a paraxial region, and both surfaces are aspheric.
The sixth lens element 460 with negative refractive power has a concave object-side surface 461 at a paraxial region and a concave image-side surface 462 at a paraxial region, and both surfaces are aspheric.
Please refer to the following Table 4-1, Table 4-2 and Table 4-3.
EXAMPLE five
Based on the above embodiments, the fifth embodiment provides an optical imaging lens.
Referring to fig. 13 to 15, fig. 13 is a schematic diagram illustrating an optical imaging lens according to a fifth embodiment of the present disclosure, fig. 14 is graphs of astigmatism and distortion of the optical imaging lens according to the fifth embodiment of the present disclosure, in order from left to right, and fig. 15 is a graph of spherical aberration of the optical imaging lens according to the fifth embodiment of the present disclosure.
In fig. 13, the optical imaging lens includes, in order from an object side to an image side, an aperture stop 501, a first lens element 510, a second lens element 520, a third lens element 530, a fourth lens element 540, a fifth lens element 550, a sixth lens element 560 and an image plane 580; in addition, the optical imaging lens further includes an infrared filter 570 disposed between the sixth lens element 560 and the image plane 580, and the infrared filter 570 does not affect the focal length of the optical imaging lens.
The first lens element 510 with positive refractive power has a convex object-side surface 511 at a paraxial region and a concave image-side surface 512 at a paraxial region, and both surfaces are aspheric.
The second lens element 520 with negative refractive power has a convex object-side surface 521 at a paraxial region and a concave image-side surface 522 at a paraxial region, and both surfaces are aspheric.
The third lens element 530 with positive refractive power has an object-side surface 531 convex at a paraxial region and an image-side surface 532 convex at a paraxial region, and both surfaces are aspheric.
The fourth lens element 540 with negative refractive power has an object-side surface 541 being convex at a paraxial region thereof and an image-side surface 542 being concave at a paraxial region thereof, and the image-side surface 542 having at least one inflection point, wherein the object-side surface 541 and the image-side surface 542 are aspheric.
The fifth lens element 550 with positive refractive power has a concave object-side surface 551 at a paraxial region and a convex image-side surface 552 at a paraxial region, wherein both surfaces are aspheric.
The sixth lens element 560 with negative refractive power has a concave object-side surface 561 at a paraxial region and a concave image-side surface 562 at a paraxial region, and both surfaces are aspheric.
Please refer to the following Table 5-1, Table 5-2 and Table 5-3.
EXAMPLE six
Based on the above embodiments, the sixth embodiment provides an optical imaging lens.
Referring to fig. 16 to 18, fig. 16 is a schematic diagram illustrating an optical imaging lens according to a sixth embodiment of the present invention, fig. 17 is graphs of astigmatism and distortion of the optical imaging lens according to the sixth embodiment of the present invention in order from left to right, and fig. 18 is a graph of spherical aberration of the optical imaging lens according to the sixth embodiment of the present invention.
In fig. 16, the optical imaging lens includes, in order from an object side to an image side, an aperture stop 601, a first lens element 610, a second lens element 620, a third lens element 630, a fourth lens element 640, a fifth lens element 650, a sixth lens element 660 and an image plane 680; in addition, the optical imaging lens further includes an infrared filter 670 disposed between the sixth lens element 660 and the image plane 680, and the infrared filter 670 does not affect the focal length of the optical imaging lens.
The first lens element 610 with positive refractive power has an object-side surface 611 being convex at a paraxial region thereof and an image-side surface 612 being concave at a paraxial region thereof.
The second lens element 620 with negative refractive power has an object-side surface 621 being convex at a paraxial region thereof and an image-side surface 622 being concave at a paraxial region thereof.
The third lens element 630 with positive refractive power has an object-side surface 631 and an image-side surface 632 being convex at a paraxial region, wherein both surfaces are aspheric.
The fourth lens element 640 with negative refractive power has an object-side surface 641 being convex at a paraxial region thereof and an image-side surface 642 being concave at a paraxial region thereof, and the image-side surface 642 has at least one inflection point, wherein the object-side surface 641 and the image-side surface 642 are aspheric.
The fifth lens element 650 with positive refractive power has a concave object-side surface 651 at a paraxial region and a convex image-side surface 652 at a paraxial region, wherein both surfaces are aspheric.
The sixth lens element 660 with negative refractive power has a concave object-side surface 661 at a paraxial region and a concave image-side surface 662 at a paraxial region, both surfaces being aspheric.
Please refer to the following Table 6-1, Table 6-2 and Table 6-3.
EXAMPLE seven
Based on the above embodiments, the present embodiment provides an image pickup apparatus including the optical imaging lens provided in the above embodiments, and adapted to be used in various electronic apparatuses. In the optical imaging lens, each lens adopts a reasonable surface shape structure and an optimized range combination of optical parameters of each lens, and maintains high imaging quality under the condition of effectively shortening the lens length, so as to provide a small/thin portable device, such as a mobile phone and the like, which needs to be equipped with high-level imaging quality. Therefore, the image pickup apparatus using the optical imaging lens has an advantage of miniaturization while ensuring high performance.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474255.6A CN109270664B (en) | 2018-12-04 | 2018-12-04 | An optical imaging lens and a camera device using the optical imaging lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474255.6A CN109270664B (en) | 2018-12-04 | 2018-12-04 | An optical imaging lens and a camera device using the optical imaging lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109270664A CN109270664A (en) | 2019-01-25 |
| CN109270664B true CN109270664B (en) | 2021-03-16 |
Family
ID=65186832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811474255.6A Active CN109270664B (en) | 2018-12-04 | 2018-12-04 | An optical imaging lens and a camera device using the optical imaging lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109270664B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412740B (en) * | 2019-06-30 | 2021-11-02 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN111045193B (en) * | 2019-12-30 | 2022-07-08 | 诚瑞光学(常州)股份有限公司 | Camera optics |
| CN111399188B (en) * | 2020-05-12 | 2024-09-27 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN111781706A (en) * | 2020-08-05 | 2020-10-16 | 惠州萨至德光电科技有限公司 | A large aperture high pixel ultra-thin imaging lens |
| CN111929827B (en) * | 2020-09-03 | 2021-04-30 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN118393696B (en) * | 2024-06-25 | 2024-11-19 | 江西联益光学有限公司 | Optical lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014232147A (en) * | 2013-05-28 | 2014-12-11 | コニカミノルタ株式会社 | Imaging lens, imaging apparatus, and portable terminal |
| CN206450894U (en) * | 2017-02-23 | 2017-08-29 | 浙江舜宇光学有限公司 | Pick-up lens |
| US20180203207A1 (en) * | 2017-01-19 | 2018-07-19 | Largan Precision Co., Ltd. | Optical image assembly, image capturing apparatus and electronic device |
| CN208110147U (en) * | 2018-03-07 | 2018-11-16 | 浙江舜宇光学有限公司 | Optical imaging lens |
-
2018
- 2018-12-04 CN CN201811474255.6A patent/CN109270664B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014232147A (en) * | 2013-05-28 | 2014-12-11 | コニカミノルタ株式会社 | Imaging lens, imaging apparatus, and portable terminal |
| US20180203207A1 (en) * | 2017-01-19 | 2018-07-19 | Largan Precision Co., Ltd. | Optical image assembly, image capturing apparatus and electronic device |
| CN206450894U (en) * | 2017-02-23 | 2017-08-29 | 浙江舜宇光学有限公司 | Pick-up lens |
| CN208110147U (en) * | 2018-03-07 | 2018-11-16 | 浙江舜宇光学有限公司 | Optical imaging lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109270664A (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109061838B (en) | Optical imaging lens and electronic equipment | |
| CN109270664B (en) | An optical imaging lens and a camera device using the optical imaging lens | |
| US9557530B2 (en) | Photographing optical lens assembly, image capturing unit and mobile device | |
| CN109270666B (en) | Optical imaging lens and electronic equipment | |
| CN109270663B (en) | An optical imaging lens and a camera device using the optical imaging lens | |
| CN109765679A (en) | Optical imaging lens and electronic equipment | |
| CN110187483B (en) | Wide-angle lens and electronic equipment | |
| CN109100855B (en) | Optical imaging lens group and electronic equipment | |
| WO2021087669A1 (en) | Optical system, image capturing device and electronic device | |
| CN111399181B (en) | Optical imaging lens | |
| CN113341539B (en) | Optical system, lens module and electronic equipment | |
| CN108983397B (en) | Image capture lens group and imaging device | |
| CN110376716B (en) | Miniature imaging lens for close-range imaging | |
| CN110187473A (en) | Five-piece type wide-angle lens and electronic equipment | |
| CN111239988A (en) | Optical systems, lens modules and electronics | |
| CN111781706A (en) | A large aperture high pixel ultra-thin imaging lens | |
| CN210775999U (en) | Optical system, lens module and electronic equipment | |
| CN113741006A (en) | Optical lens, camera module and electronic equipment | |
| CN113391430A (en) | Optical system, lens module and electronic equipment | |
| CN113296233A (en) | Optical system, camera module and electronic equipment | |
| CN111308667A (en) | Optical system, lens module and terminal equipment | |
| CN211061764U (en) | Image pickup lens assembly | |
| CN114488477B (en) | Optical system, lens module and electronic equipment | |
| CN114509862A (en) | Optical systems, camera modules and electronic equipment | |
| CN110058381A (en) | optical lens and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |