WO2022160121A1 - Lentille d'imagerie optique, appareil de capture d'image et dispositif électronique - Google Patents

Lentille d'imagerie optique, appareil de capture d'image et dispositif électronique Download PDF

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Publication number
WO2022160121A1
WO2022160121A1 PCT/CN2021/073942 CN2021073942W WO2022160121A1 WO 2022160121 A1 WO2022160121 A1 WO 2022160121A1 CN 2021073942 W CN2021073942 W CN 2021073942W WO 2022160121 A1 WO2022160121 A1 WO 2022160121A1
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Prior art keywords
lens
optical imaging
imaging lens
optical axis
object side
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PCT/CN2021/073942
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English (en)
Chinese (zh)
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徐标
李明
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欧菲光集团股份有限公司
江西晶超光学有限公司
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Priority to PCT/CN2021/073942 priority Critical patent/WO2022160121A1/fr
Publication of WO2022160121A1 publication Critical patent/WO2022160121A1/fr

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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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only

Definitions

  • the present application relates to the technical field of optical imaging, and in particular, to an optical imaging lens, an imaging device and electronic equipment.
  • a camera module and an electronic device are provided.
  • an embodiment of the present application provides an optical imaging lens
  • the optical imaging lens includes sequentially from the object side to the image side along the optical axis: a first lens, having a refractive power; a second lens, having a positive refractive power, a first lens
  • the object side of the second lens is convex at the near optical axis, and the image side of the second lens is convex at the near optical axis;
  • the third lens has refractive power;
  • the fourth lens has refractive power;
  • the fifth lens has refractive power ;
  • the sixth lens has negative refractive power, and the image side of the sixth lens is concave at the near optical axis;
  • the optical imaging lens satisfies the following relationship: 100° ⁇ FOV ⁇ 106°; TTL/Imgh ⁇ 1.3; among them, FOV is the maximum field of view of the optical imaging lens, TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, and
  • an embodiment of the present application provides an image pickup device, where the image pickup device includes the above-mentioned optical imaging lens and a photosensitive element, and the photosensitive element is disposed on the image side of the optical imaging lens.
  • an embodiment of the present application provides an electronic device, the electronic device includes a casing and the above-mentioned imaging device, and the imaging device is disposed on the casing.
  • FIG. 1 is a schematic structural diagram of an optical imaging lens provided in Embodiment 1 of the present application.
  • FIG. 2 is a spherical aberration diagram, an astigmatism diagram and a distortion diagram of the optical imaging lens provided in Embodiment 1 of the present application;
  • FIG. 3 is a schematic structural diagram of an optical imaging lens provided in Embodiment 2 of the present application.
  • FIG. 4 is a spherical aberration diagram, an astigmatism diagram and a distortion diagram of the optical imaging lens provided in Embodiment 2 of the present application;
  • FIG. 5 is a schematic structural diagram of an optical imaging lens provided in Embodiment 3 of the present application.
  • FIG. 6 is a spherical aberration diagram, an astigmatism diagram, and a distortion diagram of the optical imaging lens provided in Embodiment 3 of the present application;
  • FIG. 7 is a schematic structural diagram of an optical imaging lens provided in Embodiment 4 of the present application.
  • FIG. 8 is a spherical aberration diagram, an astigmatism diagram and a distortion diagram of the optical imaging lens provided in Embodiment 4 of the present application;
  • Embodiment 9 is a schematic structural diagram of an optical imaging lens provided in Embodiment 5 of the present application.
  • FIG. 10 is a spherical aberration diagram, an astigmatism diagram, and a distortion diagram of the optical imaging lens provided in Embodiment 5 of the present application;
  • FIG. 11 is a schematic structural diagram of an optical imaging lens provided in Embodiment 6 of the present application.
  • FIG. 12 is a spherical aberration diagram, an astigmatism diagram, and a distortion diagram of the optical imaging lens provided in Embodiment 6 of the present application;
  • FIG. 13 is a schematic structural diagram of an imaging device provided by an embodiment of the application.
  • FIG. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • the expressions first, second, third, etc. are only used to distinguish one feature from another feature and do not imply any limitation on the feature. Accordingly, the first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
  • the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings.
  • the drawings are examples only and are not drawn strictly to scale.
  • the space on the side where the object is located relative to the optical element is called the object side of the optical element.
  • the image formed by the object relative to the side space where the optical element is located is called the image of the optical element. side.
  • the surface of each lens closest to the object is called the object side, and the surface of each lens closest to the imaging surface is called the image side. And define the positive direction of the distance from the object side to the image side.
  • the lens surface is convex and the position of the convex surface is not defined, it means that the surface of the lens is convex at least near the optical axis; if the surface of the lens is concave and the position of the concave surface is not defined, then Indicates that the lens surface is concave at least near the optical axis.
  • near the optical axis refers to an area near the optical axis.
  • aberration refers to the inconsistency between the results obtained by non-paraxial ray tracing and the results obtained by paraxial ray tracing in the optical system, which is inconsistent with Gaussian optics Deviation from ideal conditions (first-order approximation theory or paraxial rays).
  • Aberration is divided into two categories: chromatic aberration (chromatic aberration, or chromatic aberration) and monochromatic aberration (monochromatic aberration).
  • chromatic aberration chromatic aberration, or chromatic aberration
  • monochromatic aberration monochromatic aberration
  • Chromatic aberration can be divided into two types: positional chromatic aberration and magnification chromatic aberration.
  • Chromatic aberration is a kind of dispersion phenomenon.
  • the so-called dispersion phenomenon refers to the phenomenon that the speed of light or the refractive index in the medium changes with the wavelength of the light wave.
  • the dispersion that increases with the increase of wavelength can be called negative dispersion (or negative anomalous dispersion).
  • Monochromatic aberration refers to the aberration that occurs even in highly monochromatic light.
  • monochromatic aberration is divided into two categories: "blurring the image” and “distorting the image”; the former category has spherical Aberration (spherical aberration, may be referred to as spherical aberration), astigmatism (astigmatism), etc., the latter category includes field curvature (field curvature, may be referred to as field curvature), distortion (distortion) and so on.
  • Aberration also includes coma, which refers to a monochromatic conical beam emitted to the optical system from an off-axis object point located outside the main axis. After being refracted by the optical system, it cannot form a clear point at the ideal plane. , but form comet-shaped spots with bright tails.
  • An embodiment of the present application proposes an optical imaging lens 100 .
  • the optical imaging lens 100 extends from the object side to the image side along the optical axis 110 It includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixth lens L6 in sequence.
  • the first lens L1 has positive refractive power or negative refractive power, and the object side S1 and the image side S2 of the first lens L1 may be concave, flat or convex at the near optical axis 110 .
  • the second lens L2 has positive refractive power, the object side S3 of the second lens L2 is convex at the near optical axis 110 , and the image side S4 of the second lens L2 is convex at the near optical axis 110 .
  • the third lens L3 has positive refractive power or negative refractive power, and the object side S5 and the image side S6 of the third lens L3 may be concave, flat or convex at the near optical axis 110 .
  • the fourth lens L4 has positive refractive power or negative refractive power, and the object side S7 and the image side S8 of the fourth lens L4 may be concave, flat or convex at the near optical axis 110 .
  • the fifth lens L5 has positive refractive power or negative refractive power, and the object side S6 and the image side S10 of the fifth lens L5 may be concave, flat or convex at the near optical axis 110 .
  • the sixth lens L6 has a negative refractive power, the object side S11 of the sixth lens L6 can be concave at the near optical axis 110, it can also be a plane, and can also be convex, and the image side S12 of the sixth lens L6 is at the near optical axis 110. is concave.
  • the optical imaging lens 100 satisfies the following relationship: 100° ⁇ FOV ⁇ 106°; TTL/Imgh ⁇ 1.3; wherein, FOV is the maximum angle of view of the optical imaging lens 100 , and TTL is the object side surface S1 to the object side of the first lens L1 to The distance between the imaging surface 15 of the optical imaging lens 100 and the optical axis 110 , Imgh is half of the image height corresponding to the maximum angle of view of the optical imaging lens 100 .
  • the rectangular effective pixel area of the image sensor has a diagonal direction. When the image sensor is assembled, the FOV can be understood as the maximum field angle of the optical imaging lens 100 parallel to the diagonal direction.
  • the optical imaging lens 100 By limiting the maximum field of view angle range of the optical imaging lens 100, it has the characteristics of wide angle, so as to meet the shooting requirements for a large field of view range.
  • the FOV can be any angle in the range of (100°, 106°), for example, the value is 101.6°, 101.7°, 101.8°, 102°, 102.1°, and so on. While controlling TTL and Imgh to satisfy the above conditional expression, the total optical length is constrained by the size of the imaging surface S15 of the optical imaging lens 100 with wide-angle characteristics, so that the optical imaging lens 100 has ultra-thin characteristics and meets the design requirements for miniaturization.
  • TTL/Imgh can be any value less than 1.3, for example, the value is 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.27, and so on.
  • Imgh can also be understood as half of the diagonal length of the rectangular effective imaging area on the imaging surface S15. When the image sensor is assembled, Imgh can also be understood as the distance from the center of the rectangular effective pixel area to the diagonal edge of the image sensor, and the diagonal direction of the above-mentioned effective imaging area is parallel to the diagonal direction of the rectangular effective pixel area. .
  • the refractive power, surface shape and arrangement and combination order of the first lens L1 to the sixth lens L6 it is beneficial to eliminate the aberration inside the optical imaging lens 100 and realize the mutual correction of the aberration between the lenses. , to improve the resolution of the optical imaging lens 100, so that it can well capture the details of the subject, obtain high-quality imaging, and improve imaging clarity.
  • the maximum field of view angle range of the optical imaging lens 100 it has the characteristics of wide angle, so as to meet the shooting requirements for a large field of view range. Controlling TTL and Imgh to satisfy the above-mentioned conditional expression, and constraining the total optical length through the imaging surface size of the optical imaging lens with wide-angle characteristics, makes the optical imaging lens ultra-thin and meets the design requirements of miniaturization.
  • Each lens can be made of a light-transmitting optical material.
  • each lens can be made of a plastic material.
  • the imaging quality of the optical imaging lens 100 is not only related to the cooperation between the various lenses in the lens, but also closely related to the material of each lens. Therefore, in order to improve the imaging quality of the optical imaging lens 100, each lens may also be partially or fully used. Made of glass material.
  • the optical imaging lens 100 satisfies the following relationship:
  • the optical imaging lens 100 satisfies the following relationship: FNO ⁇ 2.4; wherein, FNO is the aperture number of the optical imaging lens 100 . Based on the above embodiment, satisfying the above relationship can make the optical imaging lens 100 have a larger light entrance aperture, ensure sufficient light input in the optical imaging lens 100, make the captured image clearer, and in scenes with dark ambient light You can also shoot normally.
  • FNO can be any value less than or equal to 2.4, such as 2.400, 2.395, 2.391, 2.386, 2.381, 2.377, 2.370 and so on.
  • the optical imaging lens 100 satisfies the following relationship: 2 ⁇ (R5+R6)/R6 ⁇ 3; wherein, R5 is the radius of curvature of the object side surface S5 of the third lens L3 at the optical axis 110, R6 is the radius of curvature of the image side surface S6 of the third lens L3 at the optical axis 110 . Based on the above embodiment, satisfying the above relationship can effectively reduce the sensitivity of the molding yield of the third lens L3 and improve the assembly yield of the optical imaging lens 100 .
  • (R5+R6)/R6 can be any value in the range of (2, 3), for example, the value is 2.052, 2.161, 2.234, 2.307, 2.427, 2.586, 2.600, 2.642, 2.675, and so on.
  • the optical imaging lens 100 satisfies the following relationship: 0.35 ⁇ CT/TTL ⁇ 0.7; wherein, ⁇ CT is the sum of the thicknesses of the lenses in the optical imaging lens 100 at the optical axis 110, and TTL is the first The distance from the object side surface S1 of a lens L1 to the imaging surface S15 of the optical imaging lens 100 on the optical axis 110 .
  • satisfying the above-mentioned relational expression can not only satisfy the imaging quality, but also ensure that the ratio of the total thickness of each lens on the optical axis 110 to the total length of the optical imaging lens 100 is neither too large nor too small.
  • ⁇ CT/TTL can be any value within the range of (0.35, 0.7), for example, the value is 0.510, 0.517, 0.525, 0.529, 0.530, 0.534, 0.539, 0.540, and so on.
  • the optical imaging lens 100 satisfies the following relationship: 0.7 ⁇ f12/f ⁇ 1.5; wherein, f12 is the combined focal length of the first lens L1 and the second lens L2, and f is the effective focal length of the optical imaging lens 100 .
  • satisfying the above relationship can control the combined focal length of the first lens L1 and the second lens L2 within a certain range, so that the advanced spherical aberration in the optical imaging lens 100 can be well corrected, so that the optical imaging lens 100 has better image quality.
  • f12/f can be any value in the range of (0.7, 1.5), for example, the value is 0.79, 0.81, 0.85, 0.90, 0.95, 1.00, 1.07, 1.13, 1.21 and so on.
  • the optical imaging lens 100 satisfies the following relationship: 2.5 ⁇
  • satisfying the above relationship can effectively reduce the sensitivity of the molding yield of the fourth lens L4, improve the assembly stability of the optical imaging lens 100, and can well balance the advanced aberrations in the optical imaging lens 100, improve the image quality.
  • can be any value in the range of (2.5, 5.5), for example, the value is 2.72, 2.79, 2.88, 3.00, 3.73, 4.05, 4.41, 4.77, 5.02, 5.05, etc.
  • the optical imaging lens 100 satisfies the following relationship: 0.25mm ⁇ ET3 ⁇ 0.5mm; wherein, ET3 is the parallel light of the third lens L3 from the maximum effective aperture of the object side S5 to the maximum effective aperture of the image side S6 Distance in the direction of axis 110. Based on the above embodiment, satisfying the above relationship can effectively correct the optical distortion in the optical imaging lens 100, so that the optical imaging lens 100 has good optical performance, and also facilitates the processing and manufacture of the third lens L3.
  • ET3 can be any value within the range of (0.25mm, 0.5mm), such as 0.256mm, 0.261mm, 0.274mm, 0.289mm, 0.293mm, 0.297mm, 0.315mm, 0.343mm, 0.381mm, etc.
  • the optical imaging lens 100 satisfies the following relation: 0.4mm ⁇ CT2 ⁇ 0.55mm; wherein CT2 is the thickness of the second lens L2 at the optical axis 110 .
  • satisfying the above relationship can make the second lens L2 have good processing characteristics, which is beneficial to the processing and molding of the second lens L2, and at the same time, the total length of the optical imaging lens 100 can be kept within a certain range to meet the requirements of miniaturization. design requirements.
  • CT2 can be any value within the range of (0.4mm, 0.55mm), for example, the value is 0.44mm, 0.45mm, 0.47mm, 0.49mm, 0.50mm, 0.52mm, and the like.
  • the above design refractive index and Abbe number are based on the light with a wavelength of 587.56nm, and the focal length is based on the light with a wavelength of 555nm.
  • the optical imaging lens 100 may further include a diaphragm STO, and the diaphragm STO is disposed between two adjacent lenses in the optical imaging lens 100 .
  • the diaphragm STO can reduce stray light in the optical imaging lens 100 to improve imaging quality, and the diaphragm STO may be an aperture diaphragm and/or a field diaphragm.
  • the diaphragm STO is disposed between two adjacent lenses in the optical imaging lens 100.
  • the diaphragm STO may be located between the object surface of the optical imaging lens 100 and the object side surface S1 of the first lens L1, and the Between the image side S2 and the object side S3 of the second lens L2, between the image side S4 of the second lens L2 and the object side S5 of the third lens L3, etc.
  • the diaphragm STO can also be set on the object side of any lens or the image side of any lens.
  • the diaphragm STO is arranged between the image side S2 of the first lens L1 and the object side S3 of the second lens L2, and the diaphragm STO is arranged in the middle of the optical imaging lens 100 to form an optical imaging lens. 100 provides the possibility to have a larger field of view, effectively improving the viewing range of the picture.
  • the optical imaging lens 100 may further include an infrared filter 120, and the infrared filter 120 may be arranged on the image side S12 of the sixth lens L7 and the image of the optical imaging lens 100. between the sides.
  • the optical imaging lens 100 may further include protective glass, which may be disposed on the image side of the infrared filter 120 to protect the photosensitive element, and also to prevent the photosensitive element from being contaminated with dust, thereby further ensuring imaging quality. It should be noted that, in some embodiments, in order to reduce the weight of the system or reduce the total length of the lens, it is also possible to choose not to provide a protective glass, which is not limited in this application.
  • the optical imaging lens 100 of the above-mentioned embodiments of the present application may employ multiple lenses, for example, the above-mentioned six lenses.
  • the aberrations inside the optical imaging lens 100 can be eliminated, and the aberrations between the lenses can be mutually corrected, improving the
  • the resolution power of the optical imaging lens 100 enables it to capture the details of the subject well, obtain high-quality imaging, and improve imaging clarity, so as to better meet the requirements of light-weight lenses such as in-vehicle auxiliary systems, mobile phones, and tablets.
  • Application requirements of electronic equipment are those skilled in the art should understand that the number of lenses constituting the optical imaging lens 100 can be changed to obtain various results and advantages described in this specification without departing from the technical solutions claimed in the present application.
  • optical imaging lens 100 applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.
  • optical imaging lens 100 of the first embodiment of the present application with reference to FIGS. 1 to 2 .
  • FIG. 1 shows the structure of the optical imaging lens 100 in the first embodiment.
  • the optical imaging lens 100 includes a first lens L1, a second lens L2, and a third lens L3 sequentially arranged along the optical axis 110 from the object side to the image side , the fourth lens L4, the fifth lens L5, the sixth lens L6, the infrared filter 120, and the imaging surface S15.
  • the diaphragm STO is disposed between the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2.
  • the first lens L1 has a negative refractive power
  • the object side S1 and the image side S2 are both aspherical, wherein the object side S1 is convex at the near optical axis 110 and concave at the circumference, and the image side S2 is at the near optical axis.
  • the second lens L2 has a positive refractive power
  • the object side S3 and the image side S4 are both aspherical, wherein the object side S3 is convex at the near optical axis 110, and is convex at the circumference, and the image side S4 is at the near optical axis 110. Convex, convex at the circumference.
  • the third lens L3 has negative refractive power
  • the object side S5 and the image side S6 are both aspherical, wherein the object side S5 is convex at the near optical axis 110, and is convex at the circumference, and the image side S6 is at the near optical axis 110. It is concave, and it is concave at the circumference.
  • the fourth lens L4 has a positive refractive power
  • its object side S7 and image side S8 are both aspherical, wherein the object side S7 is concave at the near optical axis 110, and is concave at the circumference, and the image side S8 is at the near optical axis 110. Convex at the circumference and concave at the circumference.
  • the fifth lens L5 has a positive refractive power, and the object side S9 and the image side S10 are both aspherical, wherein the object side S9 is concave at the near optical axis 110, and is concave at the circumference, and the image side S10 is at the near optical axis 110. Convex, convex at the circumference.
  • the sixth lens L6 has a negative refractive power, and its object side S11 and image side S12 are both aspherical surfaces, wherein the object side S11 is a convex surface at the near optical axis 110, and is concave at the circumference, and the image side S12 is at the near optical axis 110. Concave and convex at the circumference.
  • the refractive index and Abbe number are based on light with a wavelength of 587.56 nm
  • the focal length is based on light with a wavelength of 555 nm.
  • the lens surface type, radius of curvature, thickness, material, refractive index, Related parameters such as Abbe number (ie dispersion coefficient) and focal length are shown in Table 1.
  • f represents the effective focal length of the optical imaging lens 100
  • FNO represents the aperture value
  • FOV represents the maximum field angle of the optical imaging lens 100
  • TTL represents the optical axis from the object side of the first lens L1 to the imaging surface S15 of the optical imaging lens 100. 100 on the distance.
  • the units of curvature radius, thickness, and effective focal length of the lens are all millimeters (mm).
  • the first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis 110
  • the second value is the image side to the image side of the lens
  • the distance on the optical axis 110, the default direction from the object side of the first lens L1 to the image side of the last lens is the positive direction of the optical axis 110, when the value is negative, it indicates that the aperture ST0 is arranged on the object of the lens
  • the thickness of the stop STO is a positive value
  • the stop STO is on the left side of the apex of the object side surface of the lens.
  • the aspheric surface type in a lens is defined by the following formula:
  • x is the distance vector height of the aspheric surface from the vertex of the aspheric surface when the height is h along the optical axis 110 direction;
  • k is the conic coefficient;
  • Ai is the i-th order coefficient of the aspheric surface.
  • Table 2 shows the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for the aspheric surface of the lens in Example 1.
  • the half of the image height Imgh corresponding to the maximum angle of view of the optical imaging lens 100 is 3.326mm, and the distance TTL from the object side S1 of the first lens L1 to the diaphragm STO on the optical axis 100 is 4.21mm. It can be seen from the data in 2 that the optical imaging lens 100 in the first embodiment satisfies:
  • FOV 102.1°; FOV is the maximum field angle of the optical imaging lens 100 . Satisfying the above relationship can make the optical imaging lens 100 have a wide-angle characteristic, and meet the shooting requirements for a wide field of view.
  • TTL/Imgh 1.27; wherein, TTL is the distance from the object side S1 of the first lens L1 to the imaging surface S15 of the optical imaging lens 100 on the optical axis 110, and Imgh is the image corresponding to the maximum angle of view of the optical imaging lens 100. half the height. Satisfying the above relationship can make the optical imaging lens 100 have ultra-thin characteristics and meet the design requirements of miniaturization.
  • 27.43; wherein, V5 is the Abbe number of the fifth lens, and V6 is the Abbe number of the sixth lens. Satisfying the above relationship can reduce the chromatic aberration in the optical imaging lens 100 and make it have better imaging performance.
  • FNO 2.39; FNO is the aperture number of the optical imaging lens 100 . Satisfying the above relationship can make the optical imaging lens 100 have a larger light entrance aperture, ensure that there is enough light in the optical imaging lens 100, make the captured image clearer, and can also operate normally in scenes with dark ambient light shoot.
  • R5+R6/R6 2.616; wherein, R5 is the radius of curvature of the object side S5 of the third lens L3 at the optical axis 110, and R6 is the radius of curvature of the image side S6 of the third lens L3 at the optical axis 110. Satisfying the above relationship can effectively reduce the sensitivity of the third lens L3 and improve the assembly yield of the optical imaging lens 100 .
  • ⁇ CT/TTL 0.54; wherein, ⁇ CT is the sum of the thicknesses of each lens in the optical imaging lens 100 at the optical axis 110, and TTL is the distance between the object side S1 of the first lens L1 and the imaging plane S15 of the optical imaging lens 100. Distance on axis 110. Satisfying the above relationship can effectively shorten the total length of the optical imaging lens 100 while satisfying the imaging quality, so as to meet the design requirement of miniaturization.
  • f12/f 0.86; wherein, f12 is the combined focal length of the first lens L1 and the second lens L2 , and f is the effective focal length of the optical imaging lens 100 . Satisfying the above relationship can control the combined focal length of the first lens L1 and the second lens L2 within a certain range, so that the advanced spherical aberration in the optical imaging lens 100 can be well corrected, so that the optical imaging lens 100 has better performance. image quality.
  • R7 is the curvature radius of the object side S7 of the fourth lens L4 at the optical axis 110
  • R8 is the image side S8 of the fourth lens L4 at the optical axis 110 the radius of curvature. Satisfying the above relationship can effectively reduce the sensitivity of the fourth lens L4, improve the assembly stability of the optical imaging lens 100, and can well balance the advanced aberrations in the optical imaging lens 100 to improve the imaging quality.
  • ET3 0.38mm; ET3 is the distance from the third lens L3 at the maximum effective aperture of the object side S5 to the maximum effective aperture of the image side S6 in the direction parallel to the optical axis 110 . Satisfying the above relationship can effectively correct the optical distortion in the optical imaging lens 100 , so that the optical imaging lens 100 has good optical performance, and also facilitates the processing and manufacture of the third lens L3 .
  • CT2 0.5252mm; CT2 is the thickness of the second lens L2 at the optical axis 110 . Satisfying the above relationship can make the second lens L2 have good processing characteristics, which is beneficial to the processing and molding of the second lens L2, and at the same time, the total length of the optical imaging lens 100 can be kept within a certain range to meet the miniaturization design requirements.
  • FIG. 2 shows the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical imaging lens 100 according to the first embodiment, respectively.
  • the reference wavelength of the optical imaging lens 100 is 555 nm.
  • the longitudinal spherical aberration graph shows the deviation of the converging point of light with a wavelength of 100 after passing through the optical imaging lens 100;
  • the astigmatism graph shows the meridional image plane curvature and sagittal image plane curvature of the optical imaging lens 100;
  • the distortion curve The figure shows the distortion of the optical imaging lens 100 under different image heights. It can be seen from FIG. 2 that the optical imaging lens 100 given in the first embodiment can achieve good imaging quality.
  • optical imaging lens 100 of the second embodiment of the present application with reference to FIGS. 3 to 4 .
  • FIG. 3 shows the structure of the optical imaging lens 100 in the second embodiment.
  • the optical imaging lens 100 includes a first lens L1 , a second lens L2 , and a third lens L3 sequentially arranged along the optical axis 110 from the object side to the image side , the fourth lens L4, the fifth lens L5, the sixth lens L6, the infrared filter 120, and the imaging surface S15.
  • the diaphragm STO is disposed between the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2.
  • the first lens L1 has a negative refractive power
  • the object side S1 and the image side S2 are both aspherical, wherein the object side S1 is concave at the near-optical axis 110, and is concave at the circumference, and the image side S2 is at the near-optical axis. Concave at 110 and concave at the circumference.
  • the second lens L2 has a positive refractive power
  • the object side S3 and the image side S4 are both aspherical, wherein the object side S3 is convex at the near optical axis 110, and is convex at the circumference, and the image side S4 is at the near optical axis 110. Convex, convex at the circumference.
  • the third lens L3 has negative refractive power
  • the object side S5 and the image side S6 are both aspherical, wherein the object side S5 is convex at the near optical axis 110, and is convex at the circumference, and the image side S6 is at the near optical axis 110. It is concave, and it is concave at the circumference.
  • the fourth lens L4 has a positive refractive power
  • its object side S7 and image side S8 are both aspherical, wherein the object side S7 is concave at the near optical axis 110, and is concave at the circumference, and the image side S8 is at the near optical axis 110. Convex at the circumference and concave at the circumference.
  • the fifth lens L5 has a negative refractive power
  • the object side S9 and the image side S10 are both aspherical surfaces, wherein the object side S9 is concave at the near optical axis 110, and is concave at the circumference, and the image side S10 is at the near optical axis 110.
  • the sixth lens L6 has a negative refractive power, and its object side S11 and image side S12 are both aspherical surfaces, wherein the object side S11 is a convex surface at the near optical axis 110, and is concave at the circumference, and the image side S12 is at the near optical axis 110. Concave and convex at the circumference.
  • the parameters of each lens in the optical imaging lens 100 are given in Table 3 and Table 4, wherein the definitions of the structures and parameters can be obtained from the first embodiment, which will not be repeated here.
  • optical imaging lens 100 of the third embodiment of the present application with reference to FIGS. 5 to 6 .
  • FIG. 5 shows the structure of the optical imaging lens 100 in the third embodiment.
  • the optical imaging lens 100 includes a first lens L1 , a second lens L2 , and a third lens L3 sequentially arranged along the optical axis 110 from the object side to the image side , the fourth lens L4, the fifth lens L5, the sixth lens L6, the infrared filter 120, and the imaging surface S15.
  • the diaphragm STO is disposed between the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2.
  • the first lens L1 has a negative refractive power
  • the object side S1 and the image side S2 are both aspherical, wherein the object side S1 is concave at the near-optical axis 110, and is concave at the circumference, and the image side S2 is at the near-optical axis. Convex at 110 and concave at the circumference.
  • the second lens L2 has a positive refractive power
  • the object side S3 and the image side S4 are both aspherical, wherein the object side S3 is convex at the near optical axis 110, and is convex at the circumference, and the image side S4 is at the near optical axis 110. Convex, convex at the circumference.
  • the third lens L3 has a positive refractive power
  • the object side S5 and the image side S6 are both aspherical, wherein the object side S5 is convex at the near optical axis 110, and is convex at the circumference, and the image side S6 is at the near optical axis 110. It is concave, and it is concave at the circumference.
  • the fourth lens L4 has a positive refractive power
  • its object side S7 and image side S8 are both aspherical, wherein the object side S7 is concave at the near optical axis 110, and is concave at the circumference, and the image side S8 is at the near optical axis 110. Convex, convex at the circumference.
  • the fifth lens L5 has a negative refractive power
  • the object side S9 and the image side S10 are both aspherical surfaces, wherein the object side S9 is concave at the near optical axis 110, and is concave at the circumference, and the image side S10 is at the near optical axis 110.
  • the sixth lens L6 has a negative refractive power, and its object side S11 and image side S12 are both aspherical surfaces, wherein the object side S11 is a convex surface at the near optical axis 110, and is concave at the circumference, and the image side S12 is at the near optical axis 110. Concave and convex at the circumference.
  • the parameters of each lens in the optical imaging lens 100 are given in Table 6 and Table 7, wherein the definitions of the structures and parameters can be obtained from the first embodiment, which will not be repeated here.
  • the optical imaging lens 100 in the third embodiment satisfies:
  • optical imaging lens 100 according to the fourth embodiment of the present application will be described below with reference to FIGS. 7 to 8 .
  • FIG. 7 shows the structure of the optical imaging lens 100 in the fourth embodiment.
  • the optical imaging lens 100 includes a first lens L1 , a second lens L2 , and a third lens L3 sequentially arranged along the optical axis 110 from the object side to the image side , the fourth lens L4, the fifth lens L5, the sixth lens L6, the infrared filter 120, and the imaging surface S15.
  • the diaphragm STO is disposed between the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2.
  • the first lens L1 has a negative refractive power
  • the object side S1 and the image side S2 are both aspherical, wherein the object side S1 is concave at the near-optical axis 110, and is concave at the circumference, and the image side S2 is at the near-optical axis. Concave at 110 and concave at the circumference.
  • the second lens L2 has a positive refractive power
  • the object side S3 and the image side S4 are both aspherical, wherein the object side S3 is convex at the near optical axis 110, and is convex at the circumference, and the image side S4 is at the near optical axis 110. Convex, convex at the circumference.
  • the third lens L3 has negative refractive power
  • the object side S5 and the image side S6 are both aspherical, wherein the object side S5 is convex at the near optical axis 110, and is convex at the circumference, and the image side S6 is at the near optical axis 110. It is concave, and it is concave at the circumference.
  • the fourth lens L4 has a positive refractive power
  • its object side S7 and image side S8 are both aspherical, wherein the object side S7 is concave at the near optical axis 110, and is concave at the circumference, and the image side S8 is at the near optical axis 110. Convex at the circumference and concave at the circumference.
  • the fifth lens L5 has a negative refractive power
  • the object side S9 and the image side S10 are both aspherical surfaces, wherein the object side S9 is concave at the near optical axis 110, and is concave at the circumference, and the image side S10 is at the near optical axis 110. Concave and convex at the circumference.
  • the sixth lens L6 has a negative refractive power, and its object side S11 and image side S12 are both aspherical surfaces, wherein the object side S11 is a convex surface at the near optical axis 110, and is concave at the circumference, and the image side S12 is at the near optical axis 110. Concave and convex at the circumference.
  • the parameters of each lens in the optical imaging lens 100 are given in Table 9 and Table 10, wherein the definitions of the structures and parameters can be obtained from the first embodiment, which will not be repeated here.
  • the optical imaging lens 100 in the fourth embodiment satisfies:
  • the optical imaging lens 100 of Embodiment 5 of the present application will be described below with reference to FIGS. 9 to 10 .
  • the optical imaging lens 100 includes a first lens L1 , a second lens L2 , and a third lens L3 arranged in sequence from the object side to the image side along the optical axis 110 , the fourth lens L4, the fifth lens L5, the sixth lens L6, the infrared filter 120, and the imaging surface S15.
  • the diaphragm STO is disposed between the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2.
  • the first lens L1 has a negative refractive power
  • the object side S1 and the image side S2 are both aspherical, wherein the object side S1 is concave at the near-optical axis 110, and is concave at the circumference, and the image side S2 is at the near-optical axis. Concave at 110 and concave at the circumference.
  • the second lens L2 has a positive refractive power
  • the object side S3 and the image side S4 are both aspherical, wherein the object side S3 is convex at the near optical axis 110, and is convex at the circumference, and the image side S4 is at the near optical axis 110. Convex, convex at the circumference.
  • the third lens L3 has negative refractive power
  • the object side S5 and the image side S6 are both aspherical, wherein the object side S5 is convex at the near optical axis 110, and is convex at the circumference, and the image side S6 is at the near optical axis 110. It is concave, and it is concave at the circumference.
  • the fourth lens L4 has a positive refractive power
  • its object side S7 and image side S8 are both aspherical, wherein the object side S7 is concave at the near optical axis 110, and is concave at the circumference, and the image side S8 is at the near optical axis 110. Convex, convex at the circumference.
  • the fifth lens L5 has a positive refractive power, and the object side S9 and the image side S10 are both aspherical, wherein the object side S9 is concave at the near optical axis 110, and is concave at the circumference, and the image side S10 is at the near optical axis 110. Convex, convex at the circumference.
  • the sixth lens L6 has a negative refractive power, and its object side S11 and image side S12 are both aspherical surfaces, wherein the object side S11 is a convex surface at the near optical axis 110, and is concave at the circumference, and the image side S12 is at the near optical axis 110. Concave and convex at the circumference.
  • the parameters of each lens in the optical imaging lens 100 are given in Table 12 and Table 13, wherein the definitions of each structure and parameter can be obtained from the first embodiment, and are not repeated here.
  • optical imaging lens 100 according to the sixth embodiment of the present application will be described below with reference to FIGS. 11 to 12 .
  • FIG. 11 shows the structure of the optical imaging lens 100 in the sixth embodiment.
  • the optical imaging lens 100 includes a first lens L1 , a second lens L2 , and a third lens L3 sequentially arranged along the optical axis 110 from the object side to the image side , the fourth lens L4, the fifth lens L5, the sixth lens L6, the infrared filter 120, and the imaging surface S15.
  • the diaphragm STO is disposed between the image side surface S2 of the first lens L1 and the object side surface S3 of the second lens L2.
  • the first lens L1 has a positive refractive power
  • the object side S1 and the image side S2 are both aspherical, wherein the object side S1 is concave at the near-optical axis 110, and is concave at the circumference, and the image side S2 is at the near-optical axis. Convex at 110 and concave at the circumference.
  • the second lens L2 has a positive refractive power
  • the object side S3 and the image side S4 are both aspherical, wherein the object side S3 is convex at the near optical axis 110, and is convex at the circumference, and the image side S4 is at the near optical axis 110. Convex, convex at the circumference.
  • the third lens L3 has negative refractive power
  • the object side S5 and the image side S6 are both aspherical, wherein the object side S5 is convex at the near optical axis 110, and is convex at the circumference, and the image side S6 is at the near optical axis 110. It is concave, and it is concave at the circumference.
  • the fourth lens L4 has a positive refractive power
  • its object side S7 and image side S8 are both aspherical, wherein the object side S7 is concave at the near optical axis 110, and is concave at the circumference, and the image side S8 is at the near optical axis 110. Convex at the circumference and concave at the circumference.
  • the fifth lens L5 has a negative refractive power
  • the object side S9 and the image side S10 are both aspherical surfaces, wherein the object side S9 is concave at the near optical axis 110, and is concave at the circumference, and the image side S10 is at the near optical axis 110.
  • the sixth lens L6 has a negative refractive power, and its object side S11 and image side S12 are both aspherical, wherein the object side S11 is a convex surface at the near optical axis 110, and is concave at the circumference, and the image side S12 is at the near optical axis 110. It is concave and convex at the circumference.
  • the parameters of each lens in the optical imaging lens 100 are given in Table 15 and Table 16, wherein the definitions of the structures and parameters can be obtained from the first embodiment, which will not be repeated here.
  • the optical imaging lens 100 in the sixth embodiment satisfies:
  • an embodiment of the present application further provides an imaging device 200 , which includes the optical imaging lens 100 and a photosensitive element 210 as described above.
  • the photosensitive surface of S17 coincides with the imaging surface S17.
  • the photosensitive element 210 may use a complementary metal oxide semiconductor (CMOS, Complementary Metal Oxide Semiconductor) image sensor or a charge-coupled element (CCD, Charge-coupled Device) image sensor.
  • CMOS complementary metal oxide semiconductor
  • CCD Charge-coupled Device
  • the imaging device 200 in the embodiment of the present application adopts the above-mentioned optical imaging lens 100, and by reasonably configuring the refractive power, surface shape, and arrangement and combination order of the first lens L1 to the sixth lens L6, it is beneficial to eliminate the optical imaging lens.
  • 100 internal aberrations realize the mutual correction of the aberrations between the lenses, and improve the resolution of the optical imaging lens 100, so that it can well capture the details of the subject, obtain high-quality imaging, and improve imaging clarity.
  • the maximum field of view angle range of the optical imaging lens 100 it has the characteristics of wide angle, so as to meet the shooting requirements for a large field of view range. Controlling TTL and Imgh to satisfy the above-mentioned conditional expression, and constraining the total optical length through the imaging surface size of the optical imaging lens with wide-angle characteristics, makes the optical imaging lens ultra-thin and meets the design requirements of miniaturization.
  • the present application further provides an electronic device 300 , which includes a casing 310 and the imaging device 200 as described above, and the imaging device 200 is installed on the casing 310 .
  • the imaging device 200 is disposed in the casing 310 and exposed from the casing 310 to acquire images.
  • the casing 310 can provide the imaging device 200 with protection from dust, water and drop, and the like.
  • a hole corresponding to the device 200 is formed, so that light can pass through the hole or pass through the casing 310 .
  • the electronic device 300 is any device that has the function of acquiring images, for example, it can be any one of wearable devices such as mobile phones, tablet computers, notebook computers, personal digital assistants, smart bracelets, smart watches, etc.
  • the imaging device 200 cooperates with the electronic device.
  • the device 300 realizes image acquisition and reproduction of the target object.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
  • a first feature "on” or “under” a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne une lentille d'imagerie optique (100), un appareil de capture d'image (200) et un dispositif électronique (300). La lentille d'imagerie optique (100) comprend séquentiellement, d'un côté objet à un côté image, le long d'un axe optique (110) : une première lentille (L1) ; une deuxième lentille (L2) ayant une réfringence positive, une surface côté objet (S3) de la deuxième lentille (L2) proche de l'axe optique (110) étant une surface convexe ; une surface côté image (S4) de la deuxième lentille (L2) proche de l'axe optique (110) étant une surface convexe ; une troisième lentille (L3) ; une quatrième lentille (L4) ; une cinquième lentille (L5) ; et une sixième lentille (L6) ayant une réfringence négative, une surface côté image (S12) de la sixième lentille (L6) proche de l'axe optique (110) étant une surface concave. La lentille d'imagerie optique (100) satisfait les relations suivantes : 100º < FOV < 106º ; TTL/Imgh/cm < 1,3, où FOV est le champ maximal d'angle de vision de la lentille d'imagerie optique (100) ; TTL est la distance entre une surface côté objet (S1) de la première lentille (L1) et une surface côté image (S15) de la lentille d'imagerie optique (100) sur l'axe optique (110) ; Imgh est la moitié de la hauteur d'image correspondant au FOV maximal de la lentille d'imagerie optique (100).
PCT/CN2021/073942 2021-01-27 2021-01-27 Lentille d'imagerie optique, appareil de capture d'image et dispositif électronique WO2022160121A1 (fr)

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WO2017160093A1 (fr) * 2016-03-18 2017-09-21 주식회사 에이스솔루텍 Système de lentille d'imagerie optique
CN109917533A (zh) * 2017-12-12 2019-06-21 康达智株式会社 摄像镜头
CN110221413A (zh) * 2019-06-30 2019-09-10 瑞声科技(新加坡)有限公司 摄像光学镜头
CN111077653A (zh) * 2019-12-27 2020-04-28 瑞声通讯科技(常州)有限公司 摄像光学镜头

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WO2017160093A1 (fr) * 2016-03-18 2017-09-21 주식회사 에이스솔루텍 Système de lentille d'imagerie optique
CN107065125A (zh) * 2016-12-14 2017-08-18 瑞声科技(新加坡)有限公司 摄像光学镜头
CN109917533A (zh) * 2017-12-12 2019-06-21 康达智株式会社 摄像镜头
CN110221413A (zh) * 2019-06-30 2019-09-10 瑞声科技(新加坡)有限公司 摄像光学镜头
CN111077653A (zh) * 2019-12-27 2020-04-28 瑞声通讯科技(常州)有限公司 摄像光学镜头

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* Cited by examiner, † Cited by third party
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CN116149030A (zh) * 2023-03-21 2023-05-23 江西联益光学有限公司 光学镜头
CN116149030B (zh) * 2023-03-21 2023-09-01 江西联益光学有限公司 光学镜头

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