WO2022226896A1 - Système optique, module de caméra et dispositif électronique - Google Patents

Système optique, module de caméra et dispositif électronique Download PDF

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Publication number
WO2022226896A1
WO2022226896A1 PCT/CN2021/090997 CN2021090997W WO2022226896A1 WO 2022226896 A1 WO2022226896 A1 WO 2022226896A1 CN 2021090997 W CN2021090997 W CN 2021090997W WO 2022226896 A1 WO2022226896 A1 WO 2022226896A1
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Prior art keywords
lens
optical system
optical axis
object side
image side
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PCT/CN2021/090997
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English (en)
Chinese (zh)
Inventor
杨健
李明
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江西晶超光学有限公司
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Priority to PCT/CN2021/090997 priority Critical patent/WO2022226896A1/fr
Publication of WO2022226896A1 publication Critical patent/WO2022226896A1/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
    • 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 -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components

Definitions

  • the invention relates to the technical field of photography and imaging, in particular to an optical system, a camera module and an electronic device.
  • a multi-lens design is generally used to improve the imaging quality.
  • various problems in the optical system gradually appear.
  • the system size increases due to the increase of the number of lenses.
  • an optical system a camera module, and an electronic device are provided.
  • An optical system comprising in sequence from the object side to the image side along the optical axis:
  • the first lens with positive refractive power the object side of the first lens is convex at the near optical axis, and the image side is concave at the near optical axis;
  • the second lens with negative refractive power the object side of the second lens is convex at the near optical axis, and the image side is concave at the near optical axis;
  • the image side of the sixth lens is concave at the near optical axis
  • the seventh lens with positive refractive power the object side of the seventh lens is convex at the near optical axis, the object side and the image side of the seventh lens are both aspherical, and at least one of the surfaces is inflection;
  • the eighth lens with negative refractive power the image side of the eighth lens is concave at the near optical axis, the object side and the image side of the eighth lens are both aspherical, and at least one of the surfaces has inflection;
  • optical system also satisfies the relation:
  • f678 is the combined focal length of the sixth lens, the seventh lens and the eighth lens, and f6 is the effective focal length of the sixth lens.
  • a camera module includes an image sensor and the above-mentioned optical system, wherein the image sensor is arranged on the image side of the optical system.
  • An electronic device includes a fixing member and the above-mentioned camera module, wherein the camera module is arranged on the fixing member.
  • FIG. 1 is a schematic structural diagram of an optical system provided by a first embodiment of the present application.
  • FIG. 2 includes longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system in the first embodiment
  • FIG. 3 is a schematic structural diagram of an optical system provided by a second embodiment of the present application.
  • FIG. 4 includes longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system in the second embodiment
  • FIG. 5 is a schematic structural diagram of an optical system provided by a third embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an optical system provided by a fourth embodiment of the present application.
  • FIG. 8 includes longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system in the fourth embodiment
  • FIG. 9 is a schematic structural diagram of an optical system provided by a fifth embodiment of the present application.
  • FIG. 10 includes longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system in the fifth embodiment
  • FIG. 11 is a schematic structural diagram of an optical system provided by a sixth embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of an optical system provided by a seventh embodiment of the present application.
  • 15 is a schematic diagram of a camera module provided by an embodiment of the application.
  • FIG. 16 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • an embodiment of the present application provides an optical system 10 having an eight-lens structure.
  • the optical system 10 includes a first lens L1 , a second lens L2 , a third lens L1 , a second lens L2 , and a third lens along the optical axis 101 from the object side to the image side in sequence.
  • the first lens L1 has positive refractive power
  • the second lens L2 has negative refractive power
  • the sixth lens L6 has negative refractive power
  • the seventh lens L7 has positive refractive power
  • the eighth lens L8 has negative refractive power.
  • the optical axes of the lenses in the optical system 10 are on the same straight line, and the straight line is the optical axis 101 of the optical system 10 .
  • Each lens in the optical system 10 can be assembled in a lens barrel to form an imaging lens.
  • the first lens L1 has an object side S1 and an image side S2
  • the second lens L2 has an object side S3 and an image side S4
  • the third lens L3 has an object side S5 and an image side S6
  • the fourth lens L4 has an object side S7 and an image side S8
  • the fifth lens L5 has an object side S9 and an image side S10
  • the sixth lens L6 has an object side S11 and an image side S12
  • the seventh lens L7 has an object side S13 and an image side S14
  • the eighth lens L8 has an object side S15 and an image side S14.
  • the side S16 Like the side S16.
  • the optical system 10 also has an imaging surface S17 , which is located on the image side of the eighth lens L8 , and the on-axis object point can converge on the imaging surface S17 after being adjusted by each lens of the optical system 10 .
  • the imaging surface S17 of the optical system 10 coincides with the photosensitive surface of the image sensor.
  • the imaging surface S17 can also be regarded as the photosensitive surface of the image sensor.
  • the object side S1 of the first lens L1 is convex at the near optical axis
  • the image side S2 is concave at the near optical axis
  • the object side S3 of the second lens L2 is convex at the near optical axis
  • the image side S4 is concave at the near optical axis
  • the image side S12 of the sixth lens L6 is concave at the near optical axis
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, while the seventh lens L7
  • Both the object side surface S13 and the image side surface S14 are aspherical surfaces, and at least one of the object side surface S13 and the image side surface S14 is inflected
  • the image side surface S16 of the eighth lens L8 is concave at the near optical axis
  • the Both the object side surface S15 and the image side surface S16 are aspherical surfaces, and at least one of the object side surface S15 and the image side surface S16 has a
  • the lens surface has a certain surface shape near the optical axis, that is, the lens surface has this surface shape near the optical axis 101, and the lens surface is radially close to the area at the maximum effective aperture. It can have the same surface type or the opposite surface type. When there are two opposite surface types on the same lens surface, it can be said that the surface has a recurve.
  • the first lens L1 by making the first lens L1 have a positive refractive power and satisfy the above-mentioned surface design, it will be beneficial to make the image-side focal position of the first lens L1 closer to the object side, thereby facilitating the compression of the optical system 10 .
  • the second lens L2 by making the second lens L2 have a negative refractive power and a surface configuration similar to that of the first lens L1, the first lens L1 can be reasonably matched to reasonably reduce the light in each field of view after passing through the first lens L1.
  • the optical system 10 further satisfies the relationship: 2.5 ⁇ f678/f6 ⁇ 8.5; f678 is the sixth lens L6, the seventh lens L7 and the eighth lens L8 The combined focal length of , f6 is the effective focal length of the sixth lens L6.
  • the optical system 10 When the optical system 10 further satisfies this relationship, a reasonable configuration can be obtained between the combined focal length of the sixth lens L6, the seventh lens L7, and the eighth lens L8, which are the optical system 10 closest to the image side, and the effective focal length of the sixth lens L6 , which can help to slow down the deflection angle of the light in the fringe field of view, reduce the sensitivity of the incident light to the sixth lens L6 to the eighth lens L8, so that the aberration generated by the object lens can be reasonably corrected, and the imaging of the optical system 10 can be improved.
  • the refractive power of the sixth lens L6 can be reasonably configured, it is not only conducive to compressing the length of the optical system 10, but also reduces the refractive power burden of the sixth lens L6 and reduces the molding difficulty of the sixth lens L6.
  • the workability of the sixth lens L6 is improved.
  • the relationship satisfied by the optical system 10 may specifically be 2.7, 2.85, 2.94, 3.18, 3.3, 4.6, 5.9, 6.7, 7.5, 7.8 or 8.0.
  • the optical system 10 in some embodiments satisfies the relationship: -10.69mm ⁇ f6 ⁇ -7.572mm.
  • the combined refractive power of the sixth lens L6 to the eighth lens L8 can be better matched, so as to further reduce the light rays of the edge field of view when they pass through the rear mirror group in the optical system 10.
  • the deflection angle reduces the sensitivity of the incident light to the rear mirror group, which is conducive to further correcting the aberration of the system.
  • the optical system 10 also satisfies at least one of the following relationships and related aperture settings, and can have corresponding technical effects when any relationship is satisfied:
  • ImgH may also be referred to as the maximum imaging circle radius of the optical system 10, and in some embodiments, when the optical system 10 is assembled with the image sensor, half of the diagonal length of the rectangular effective pixel area on the image sensor is equal to or approximately equal to the ImgH numerical value. Satisfying this relationship not only helps the optical system 10 to obtain a larger image plane, but also helps the optical system 10 to obtain a compact structure, so that the imaging characteristics of miniaturization, large image plane, and high pixel can be taken into account.
  • the relationship satisfied by the optical system 10 may specifically be 3, 3.15, 3.26, 3.3, 3.35, 3.45, 3.49, 3.57, 3.63 or 3.70, and the numerical unit is mm. Further, when the optical system 10 with the above refractive power and surface design satisfies FNO ⁇ 1.85, it can ensure that the optical system 10 can still obtain sufficient luminous flux in a darker weather environment, thereby ensuring higher imaging quality. In some embodiments, the FNO satisfied by the optical system 10 may specifically be 1.5, 1.53, 1.56, 1.6, 1.64, 1.68, 1.73, 1.77 or 1.82.
  • TTL is the distance from the object side S1 of the first lens L1 to the imaging surface S17 of the optical system 10 on the optical axis 101
  • ImgH is half of the image height corresponding to the maximum angle of view of the optical system 10 .
  • TTL is the distance from the object side S1 of the first lens L1 to the imaging surface S17 of the optical system 10 on the optical axis 101 , that is, the total optical length of the optical system 10 .
  • f345 is the combined focal length of the third lens L3, the fourth lens L4 and the fifth lens L5, and f12 is the combined focal length of the first lens L1 and the second lens L2.
  • the lens group formed by the first lens L1 and the second lens L2 provides an excessively large positive refractive power, which increases the sensitivity of the optical system 10 and is not conducive to realizing the miniaturization and large image surface characteristics of the system.
  • the total positive refractive power provided by the lens group formed by the third lens L3 to the fifth lens L5 will be too large, which will easily overcorrect the aberration generated by the object lens and increase the Correction burden for large image square lenses.
  • the f345/f12 relationship satisfied by the optical system 10 may specifically be 7.2, 7.8, 8.5, 9.3, 9.9, 10.6, 11.0, 11.7, 12.6 or 13.2.
  • f1 is the effective focal length of the first lens L1
  • f2 is the effective focal length of the second lens L2
  • r12 is the image side S2 of the first lens L1 on the optical axis 101 is the radius of curvature
  • r22 is the radius of curvature of the image side S4 of the second lens L2 at the optical axis 101 .
  • the relationship satisfied by the optical system 10 may specifically be 1.8, 1.95, 2.07, 2.15, 2.24, 2.37, 2.43 or 2.5.
  • ct37/et37 ⁇ 1.4; ct37 is the sum of the thicknesses of the third lens L3 to the seventh lens L7 on the optical axis 101, and et37 is the maximum effective aperture on the object side of the third lens L3 to the seventh lens L7 The sum of the distances from the position to the maximum effective aperture of the image side in the direction of the optical axis.
  • the central thickness and edge thickness of each lens are reasonably configured, which is conducive to the uniform size distribution of each lens, ensuring that Post-lens assembly stabilization.
  • the relationship satisfied by the optical system 10 may specifically be 1.25, 1.28, 1.3, 1.32 or 1.35.
  • f is the effective focal length of the optical system 10
  • sd11 is half of the maximum effective aperture of the object side S1 of the first lens L1
  • sd82 is the maximum effective aperture of the image side S16 of the eighth lens L8 half of the effective caliber.
  • the relationship satisfied by the optical system 10 may specifically be 2.1, 2.14, 2.19, 2.26, 2.3, 2.35, 2.4 or 2.43.
  • r62 is the curvature radius of the image side S12 of the sixth lens L6 at the optical axis 101
  • r71 is the object side S13 of the seventh lens L7
  • the curvature radius at the optical axis 101, sag62 is the sag of the image side S12 of the sixth lens L6 at the maximum effective aperture, and sag71 is the sag of the object side S13 of the seventh lens L7 at the maximum effective aperture.
  • the relationship satisfied by the optical system 10 may specifically be 5.9, 6.0, 6.3, 6.7, 6.9 or 7.1.
  • ct23 is the distance from the image side S4 of the second lens L2 to the object side S5 of the third lens L3 on the optical axis 101
  • ct78 is the image side S14 of the seventh lens L7 to the eighth lens L8 The distance of the object side surface S15 on the optical axis 101.
  • the gap between the second lens L2 and the third lens L3 and the gap between the seventh lens L7 and the eighth lens L8 can be reasonably constrained, thereby improving the processing and assembling feasibility of the optical system 10, and at the same time. It is also beneficial to shorten the total length of the system and improve the imaging quality of the central field of view.
  • the relationship satisfied by the optical system 10 may specifically be 2, 2.04, 2.09, 2.15, 2.23, 2.27 or 2.3.
  • sag72 is the sag of the image side S14 of the seventh lens L7 at the maximum effective aperture
  • sag81 is the sag of the object side S15 of the eighth lens L8 at the maximum effective aperture.
  • the sag, et78 is the distance from the maximum effective aperture of the image side S14 of the seventh lens L7 to the maximum effective aperture of the object side S15 of the eighth lens L8 in the direction of the optical axis.
  • the relationship satisfied by the optical system 10 may specifically be 0.80, 0.87, 0.96, 1.07, 1.14, 1.23, 1.34, 1.45 or 1.52.
  • the optical system 10 includes a vignetting stop disposed between the second lens L2 and the third lens L3, sds is the maximum effective aperture of the vignetting stop, and sd31 is the third The maximum effective aperture of the object side S5 of the lens L3, and sd81 is the maximum effective aperture of the object side S15 of the eighth lens L8.
  • sd81-sd31 is expressed as the step difference from the third lens L3 to the eighth lens L8.
  • the aperture of the vignetting stop located between the second lens L2 and the third lens L3 and the configuration of the step difference are reasonable, so that the edge The light of the field of view can reach the eighth lens L8 and further reach the imaging surface S17 with a reasonable propagation angle after passing through the vignetting diaphragm.
  • the above design is not only conducive to increasing the size of the image surface of the optical system 10 and shortening the total length, but also It is beneficial to increase the aperture, increase the luminous flux, and improve the imaging quality of the optical system 10 in a darker environment; in addition, it is also beneficial to control the aperture difference between the lenses, avoid excessive changes in the apertures of adjacent lenses, and reduce the design pressure of the lens barrel.
  • the relationship satisfied by the optical system 10 may specifically be 0.55, 0.59, 0.63, 0.67, 0.70 or 0.72.
  • zh78 is the maximum distance from the image side S14 of the seventh lens L7 to the object side S15 of the eighth lens L8 in the optical axis direction
  • zb78 is the image side S14 of the seventh lens L7 to the eighth lens
  • the eighth lens L8 it is beneficial to make the eighth lens L8 have enough distortion to match the seventh lens L7 to correct the system aberration, Promote the marginal light to have a smaller deflection angle when passing through the seventh lens L7 and the eighth lens L8, thereby improving the imaging quality; on the other hand, sufficient air gap can be left between the seventh lens L7 and the eighth lens L8 , in order to meet the requirements of forming assembly.
  • the relationship satisfied by the optical system 10 may specifically be 9.7, 9.9, 10.3, 10.7, 11.3 or 11.7.
  • zh67 is the maximum distance from the image side S12 of the sixth lens L6 to the object side S13 of the seventh lens L7 in the optical axis direction
  • zb67 is the image side S12 of the sixth lens L6 to the seventh lens
  • the side S12 is adapted to the surface shape of the object side S13 of the seventh lens L7 to promote the aberration balance of the optical system, improve the resolution of the system, and also help to reduce the generation of ghost images and stray light; on the other hand, it is also beneficial to Shorten the total length of the system to avoid the occurrence of poor assembly caused by too close the distance between the lenses.
  • the relationship satisfied by the optical system 10 may specifically be 4.46, 4.53, 4.77, 5.00, 5.24, 5.38 or 5.42.
  • jd22 is the maximum acute angle formed by the tangent plane of each position of the image side S4 of the second lens L2 and the plane perpendicular to the optical axis, and the optical system 10 includes a Vignetting stop with third lens L3.
  • the image side S4 of the second lens L2 is an adjacent optical surface located on the object side of the vignetting diaphragm. The incident light is highly sensitive to the surface shape of this surface. Controlling the above ratio within a reasonable range can effectively control the surface of this surface.
  • the relationship satisfied by the optical system 10 may specifically be 0.652, 0.655, 0.658 or 0.664.
  • jd31 is the maximum acute angle formed by the tangent plane of each position of the object side surface S5 of the third lens L3 and the plane perpendicular to the optical axis, and the optical system 10 includes the second lens L2 Vignetting stop with third lens L3.
  • the object side S5 of the third lens L3 is the adjacent optical surface located on the image side of the vignetting diaphragm.
  • the relationship satisfied by the optical system 10 may specifically be 0.43, 0.45, 0.46, 0.48 or 0.50.
  • the numerical reference wavelength of effective focal length and combined focal length in the above relational conditions is 555nm.
  • the description of effective focal length, combined focal length and refractive power at least refers to the value of the corresponding lens or lens group at the near optical axis.
  • the above relational conditions and the technical effects brought about are aimed at the optical system 10 that satisfies the above-mentioned lens design (number of lenses, configuration of refractive power, configuration of surface shape, etc.).
  • the lens design of the aforementioned optical system 10 cannot be guaranteed, it will be difficult to ensure that the optical system 10 can still have corresponding technical effects when these relational expressions are satisfied, and may even lead to obvious deterioration of imaging performance.
  • At least one lens of the optical system 10 has an aspherical surface.
  • the lens is said to have an aspherical surface.
  • the object side surface and the image side surface of each lens can be designed as aspherical surfaces.
  • the aspherical design can help the optical system 10 to more effectively eliminate aberrations and improve imaging quality.
  • at least one lens of the optical system 10 may have a spherical surface shape, and the design of the spherical surface shape can reduce the manufacturing difficulty and manufacturing cost of the lens.
  • the design of the surfaces of each lens in the optical system 10 may be a combination of aspherical and spherical surfaces.
  • Z is the distance from the corresponding point on the aspheric surface to the tangent plane of the surface at the optical axis
  • r is the distance from the corresponding point on the aspheric surface to the optical axis
  • c is the curvature of the aspheric surface at the optical axis
  • k is the cone coefficient
  • Ai is the coefficient of the high-order term corresponding to the i-th-order high-order term in the aspheric surface formula.
  • At least one lens in the optical system 10 is made of plastic (PC, Plastic), and the plastic material may be polycarbonate, gum, or the like.
  • the material of at least one lens in the optical system 10 is glass (GL, Glass).
  • lenses of different materials can be provided in the optical system 10, that is, a design combining glass lenses and plastic lenses can be used, but the specific configuration relationship can be based on actual conditions. It is determined according to the needs, and it is not exhaustive here.
  • the optical system 10 includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power in sequence from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with positive refractive power, fourth lens L4 with negative refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 having a strong refractive power and the eighth lens L8 having a negative refractive power, and the lens surfaces of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 is convex at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is convex near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is convex at the near optical axis, and the image side S8 is concave at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is concave at the near optical axis, and the image side S10 is convex at the near optical axis; the object side S9 is concave near the maximum effective aperture, and the image side S10 is concave near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is convex near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is concave at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is concave near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is concave at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • the respective lens parameters of the optical system 10 in the first embodiment are shown in Table 1 below.
  • the elements from the object side to the image side of the optical system 10 are arranged in order from top to bottom in Table 1.
  • the infrared cut filter 110 can be used as a part of the optical system 10 or removed from the optical system 10, but after the infrared cut filter 110 is removed, the optical total length TTL of the optical system 10 should remain unchanged.
  • the Y radius in Table 1 is the curvature radius of the corresponding surface of the lens at the optical axis 101 .
  • the surface with the surface number S1 represents the object side of the first lens L1
  • the surface with the surface number S2 represents the image side of the first lens L1
  • the first value of each lens in the "thickness" parameter column The absolute value is the thickness of the lens on the optical axis 101
  • the absolute value of the second value is the distance on the optical axis 101 from the image side of the lens to the next optical surface (object side or diaphragm surface of the latter lens) on the optical axis 101
  • the thickness parameter of the diaphragm represents the distance from the diaphragm surface to the object side of the adjacent lens on the image side on the optical axis 101 .
  • the reference wavelength of refractive index and Abbe number of each lens in the table is 587.6nm
  • the reference wavelength of focal length (effective focal length) is 555nm
  • the numerical units of Y radius, thickness, focal length (effective focal length) are all millimeters (mm) .
  • the parameter data and the lens surface structure used in the calculation of the relational expressions in the following embodiments are subject to the data in the lens parameter table in the corresponding embodiments.
  • the effective focal length f of the optical system 10 in the first embodiment is 6.126mm
  • the aperture number FNO is 1.59
  • the maximum field angle FOV is 82.767°
  • the total optical length TTL is 7.59mm.
  • Table 2 presents the aspheric coefficients of the corresponding lens surfaces in Table 1, where K is the conic coefficient and Ai is the coefficient corresponding to the i-th higher-order term in the aspheric surface type formula.
  • the optical system 10 satisfies the following relationships:
  • the space can be reasonably configured, which can help to slow down the deflection angle of the light at the edge of the field of view, reduce the sensitivity of the incident light to the sixth lens L6 to the eighth lens L8, so as to reasonably correct the aberration generated by the object lens, improve the The imaging quality of the optical system 10; in addition, because the refractive power of the sixth lens L6 can be reasonably configured, it is not only beneficial to compress the length of the optical system 10, but also reduces the refractive power burden of the sixth lens L6, reducing the sixth lens.
  • the molding difficulty of L6 improves the workability of the sixth lens L6.
  • ImgH/FNO 3.464mm; when this relationship is satisfied, it is not only beneficial for the optical system 10 to obtain a larger image plane, but also for the optical system 10 to obtain a compact structure, so that the imaging of miniaturization, large image plane and high pixel can be taken into account characteristic.
  • TTL/ImgH 1.377; when this relationship is satisfied, on the one hand, it is beneficial to reduce the total length of the optical system 10 and reduce the sensitivity; Match a higher pixel image sensor to capture sharper details.
  • ct37/et37 1.23; when this relationship is satisfied, it is beneficial to shorten the total length of the system and realize a compact structure between the third lens L3 and the seventh lens L7, and the central thickness and edge thickness of each lens are reasonably configured, which is beneficial to each lens.
  • the size distribution of the lens is uniform to ensure the stability of the later lens assembly.
  • f/(sd82-sd11) 2.439; when this relationship is satisfied, the aperture difference between the first lens L1 and the eighth lens L8 can be reasonably constrained, so that the optical system 10 can obtain a larger image surface, and it is also beneficial to shorten the system Overall length, while realizing a small head design.
  • ct78/ct23 1.860; when this relationship is satisfied, the gap between the second lens L2 and the third lens L3 and the gap between the seventh lens L7 and the eighth lens L8 can be reasonably constrained, thereby improving the optical system 10.
  • the feasibility of processing and assembly is also conducive to shortening the total length of the system and improving the imaging quality of the central field of view.
  • edge light has a smaller deflection angle when passing through the two optical surfaces, so as to facilitate the smooth transition of the edge light from the field of view to the image surface, suppress the vignetting phenomenon at the edge of the image surface, and improve the resolution of the optical system 10 .
  • sds/(sd81-sd31) 0.633; sd81-sd31 is expressed as the step difference from the third lens L3 to the eighth lens L8, when this relationship is satisfied, the vignetting stop STO2 located between the second lens L2 and the third lens L3
  • the configuration of the aperture and the step difference is reasonable, so that the light of the fringe field of view can reach the eighth lens L8 and further reach the imaging surface S17 with a reasonable propagation angle after passing through the vignetting diaphragm STO2.
  • the above design is not only conducive to increasing the optical system. The size of the image surface of 10 and the overall length are shortened.
  • the aperture it is beneficial to increase the aperture, increase the luminous flux, and improve the imaging quality of the optical system 10 in a darker environment.
  • zh78/zb78 10.387; when this relationship is satisfied, the degree of curvature between the seventh lens L7 and the eighth lens L8 can be reasonably controlled, on the one hand, it is beneficial to make the eighth lens L8 have sufficient distortion to match the seventh lens L7 To correct the system aberration, make the marginal light have a smaller deflection angle when passing through the seventh lens L7 and the eighth lens L8, thereby improving the imaging quality; on the other hand, it can make the gap between the seventh lens L7 and the eighth lens L8 Leave enough air gap to meet the requirements of forming assembly.
  • the image side S12 of the sixth lens L6 is adapted to the surface shape of the object side S13 of the seventh lens L7, so as to promote the aberration balance of the optical system, improve the resolution of the system, and also help reduce ghost images and stray light generation; On the other hand, it is also beneficial to shorten the total length of the system and avoid the occurrence of poor assembly caused by too close the distance between the lenses.
  • the image side S4 of the second lens L2 is the adjacent optical surface located on the object side of the vignetting stop STO2, and the incident light is highly sensitive to the surface shape of the surface, and the above ratio is controlled at Within a reasonable range, the surface complexity of the surface can be effectively controlled, the sensitivity can be reduced, the imaging quality of the optical system 10 can be improved, and at the same time, the difficulty of forming and processing the second transparent sheet can be reduced, and the yield can be improved.
  • the object side S5 of the third lens L3 is the adjacent optical surface located on the image side of the vignetting stop STO2, the light is deflected on this surface, and the light of the central field of view and the edge of the field of view is in space Therefore, by satisfying this relationship condition, the maximum inclination angle of the object side S5 of the third lens L3 is reduced, and the complexity of the surface shape is reduced, which is beneficial to The overall yield and imaging quality of the optical system 10 are improved, and the difficulty of forming the lens is also reduced.
  • FIG. 2 includes a longitudinal spherical aberration map, an astigmatism map, and a distortion map of the optical system 10 in the first embodiment, wherein the reference wavelength of the astigmatism map and the distortion map are both 555 nm, and for the following embodiments
  • the astigmatism map and the distortion map are the same as the astigmatism map and the distortion map, and the ordinates of the astigmatism map and the distortion map are represented like the height IMG HT, and the unit is mm.
  • Longitudinal Spherical Aberration shows the degree of defocusing of light of different wavelengths after passing through the lens.
  • the ordinate of the longitudinal spherical aberration map represents the normalized pupil coordinate (Normalized Pupil Coordinator) from the pupil center to the pupil edge, and the abscissa represents the distance from the imaging plane to the intersection of the light and the optical axis (unit is mm). It can be seen from the longitudinal spherical aberration diagram that in the first embodiment, the degree of deviation of the convergence focus of each wavelength of light tends to be consistent, and the maximum focus deviation of each reference wavelength is controlled within ⁇ 0.05mm. Color halo is effectively suppressed.
  • the 2 also includes a field curvature astigmatism diagram (Astigmatic Field Curves) of the optical system 10, wherein the S curve represents the sagittal field curvature at 555 nm, and the T curve represents the meridional field curvature at 555 nm.
  • the field curvature of the optical system is small, the maximum field curvature is controlled within ⁇ 0.025mm, the curvature of the image plane is effectively suppressed, and the sagittal field curvature and meridional field curvature in each field of view tend to be consistent.
  • the astigmatism of each field of view is better controlled, so it can be seen that the optical system 10 has a clear image from the center to the edge of the field of view.
  • the distortion diagram it can be seen that the maximum distortion of the optical system 10 is controlled within 2.5%, so it can be seen that the degree of distortion of the imaging screen is well controlled.
  • the optical system 10 includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power in sequence from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with positive refractive power, fourth lens L4 with negative refractive power, fifth lens L5 with positive refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 having a strong refractive power and the eighth lens L8 having a negative refractive power, and the lens surfaces of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is concave at the near optical axis, and the image side S6 is convex at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is convex near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 is concave at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is concave at the near optical axis, and the image side S10 is convex at the near optical axis; the object side S9 is concave near the maximum effective aperture, and the image side S10 is concave near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is convex near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is convex at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is concave near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is concave at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • the lens parameters of the optical system 10 in this embodiment are given in Table 3 and Table 4, and the definitions of the names and parameters of each element can be obtained from the first embodiment, which will not be repeated here.
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 of this embodiment can have a clear image.
  • the optical system 10 sequentially includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with positive refractive power, fourth lens L4 with negative refractive power, fifth lens L5 with positive refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 having a strong refractive power and the eighth lens L8 having a negative refractive power, and the lens surfaces of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is concave at the near optical axis, and the image side S6 is convex at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is convex near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 is concave at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S9 is convex near the maximum effective aperture, and the image side S10 is concave near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is concave at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is concave near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is concave at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is concave near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is convex at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 of this embodiment can have a clear image.
  • the optical system 10 sequentially includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with negative refractive power, fourth lens L4 with positive refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 with power and the eighth lens L8 with negative refractive power, and the surface shapes of the lenses of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is concave at the near optical axis, and the image side S6 is concave at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is convex near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is convex at the near optical axis, and the image side S8 is concave at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S9 is convex near the maximum effective aperture, and the image side S10 is concave near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is concave near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is concave at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is convex near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is concave at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 of this embodiment can have a clear image.
  • the optical system 10 includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power in sequence from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with positive refractive power, fourth lens L4 with negative refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 with power and the eighth lens L8 with negative refractive power, and the surface shapes of the lenses of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 is convex at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is convex near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 is convex at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is concave at the near optical axis, and the image side S10 is convex at the near optical axis; the object side S9 is convex near the maximum effective aperture, and the image side S10 is concave near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is concave at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is concave near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is concave at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is convex near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is concave at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • optical system 10 in this embodiment satisfies the following relationship:
  • the longitudinal spherical aberration, field curvature, astigmatism and distortion of the optical system 10 are well controlled, and the focus shift at each reference wavelength is controlled within ⁇ 0.05mm.
  • the meridional field curvature and sagittal field curvature in each field of view are controlled within ⁇ 0.025mm, the curvature of the image plane is effectively suppressed, and the astigmatism is well adjusted, and the maximum distortion is also controlled within 2.5%. It can be judged that the optical system 10 of this embodiment can have a clear image.
  • the optical system 10 sequentially includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with positive refractive power, fourth lens L4 with negative refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 with power and the eighth lens L8 with negative refractive power, and the surface shapes of the lenses of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is convex near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 is convex at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is convex near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 is convex at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is concave at the near optical axis, and the image side S10 is convex at the near optical axis; the object side S9 is convex near the maximum effective aperture, and the image side S10 is concave near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is concave at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is concave near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is concave at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is convex near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is concave at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 of this embodiment can have a clear image.
  • the optical system 10 sequentially includes an aperture stop STO1 , a first lens L1 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side along the optical axis 101 , vignetting stop STO2, third lens L3 with positive refractive power, fourth lens L4 with negative refractive power, fifth lens L5 with negative refractive power, sixth lens L6 with negative refractive power, positive refractive power
  • the seventh lens L7 with power and the eighth lens L8 with negative refractive power, and the surface shapes of the lenses of the optical system 10 are as follows:
  • the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S1 is concave near the maximum effective aperture, and the image side S2 is convex near the maximum effective aperture. .
  • the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is concave at the near optical axis; the object side S3 is convex near the maximum effective aperture, and the image side S4 is concave near the maximum effective aperture .
  • the object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 is convex at the near optical axis; the object side S5 is concave near the maximum effective aperture, and the image side S6 is concave near the maximum effective aperture .
  • the object side S7 of the fourth lens L4 is convex at the near optical axis, and the image side S8 is concave at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is concave near the maximum effective aperture. .
  • the object side S9 of the fifth lens L5 is concave at the near optical axis, and the image side S10 is convex at the near optical axis; the object side S9 is convex near the maximum effective aperture, and the image side S10 is convex near the maximum effective aperture. .
  • the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is convex near the maximum effective aperture, and the image side S12 is concave near the maximum effective aperture. .
  • the object side S13 of the seventh lens L7 is convex at the near optical axis, and the image side S14 is convex at the near optical axis; the object side S13 is concave near the maximum effective aperture, and the image side S14 is convex near the maximum effective aperture. .
  • the object side S15 of the eighth lens L8 is concave at the near optical axis, and the image side S16 is concave at the near optical axis; the object side S15 is concave near the maximum effective aperture, and the image side S16 is convex near the maximum effective aperture. .
  • the lens parameters of the optical system 10 in this embodiment are given in Table 13 and Table 14, and the definitions of the names and parameters of each element can be obtained from the first embodiment, which will not be repeated here.
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 of this embodiment can have a clear image.
  • the optical system 10 provided by the above-mentioned embodiments can maintain a good imaging quality while realizing the miniaturized design of the structure.
  • an embodiment of the present application further provides a camera module 20 .
  • the camera module 20 includes an optical system 10 and an image sensor 210 .
  • the image sensor 210 is disposed on the image side of the optical system 10 , and the two can be fixed by a bracket. .
  • the image sensor 210 may be a CCD sensor (Charge Coupled Device, charge coupled device) or a CMOS sensor (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor).
  • the imaging surface S17 of the optical system 10 overlaps the photosensitive surface of the image sensor 210 .
  • the electronic device 30 includes a fixing member 310 , and the camera module 20 is mounted on the fixing member 310 , and the fixing member 310 may be a display screen, a circuit board, a middle frame, a back cover and other components.
  • the electronic device 30 can be, but is not limited to, a smart phone, a smart watch, a smart glasses, an e-book reader, a tablet computer, a biometric device (such as a fingerprint recognition device or a pupil recognition device, etc.), a PDA (Personal Digital Assistant, personal digital assistant) Wait.
  • the electronic device 30 can be assembled with the above-mentioned camera module 20 in a smaller space, so that the thickness of the device can be reduced Compression is achieved while maintaining good camera performance.
  • the "electronic device” used in the embodiments of the present invention may include, but is not limited to, be configured to be connected via wired lines (eg, via a public switched telephone network (PSTN), digital subscriber line, DSL), digital cable, direct cable connection, and/or another data connection/network) and/or via (eg, for cellular networks, wireless local area networks (WLAN), such as digital video broadcast broadcasting handheld, DVB-H) network digital television network, satellite network, AM-FM (amplitude modulation-frequency modulation, AM-FM) broadcast transmitter, and/or another communication terminal) wireless interface to receive/transmit communication signals device of.
  • PSTN public switched telephone network
  • DSL digital subscriber line
  • DSL digital cable, direct cable connection, and/or another data connection/network
  • WLAN wireless local area networks
  • AM-FM amplitude modulation-frequency modulation, AM-FM
  • wireless communication terminals Electronic devices arranged to communicate over a wireless interface may be referred to as “wireless communication terminals", “wireless terminals” and/or “mobile terminals”.
  • mobile terminals include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that may combine cellular radio telephones with data processing, facsimile, and data communication capabilities; may include radio telephones, pagers, Internet/ Personal digital assistants (PDAs) with intranet access, web browsers, memo pads, calendars, and/or global positioning system (GPS) receivers; and conventional laptops and/or palmtops A receiver or other electronic device including a radiotelephone transceiver.
  • PCS personal communication system
  • PDAs Internet/ Personal digital assistants
  • GPS global positioning system
  • 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.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit.
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit.
  • 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 un système optique (10), comprenant : une première lentille (L1) ayant une réfringence positive, une surface côté objet (S1) de celle-ci étant une face convexe à proximité d'un axe optique, et une surface côté image (S2) de celle-ci étant une face concave à proximité de l'axe optique ; une deuxième lentille (L2) ayant une réfringence négative, une surface côté objet (S3) de celle-ci étant une face convexe proche de l'axe optique, et une surface côté image (S4) de celle-ci étant une face concave à proximité de l'axe optique ; une troisième lentille (L3) ; une quatrième lentille (L4) ; une cinquième lentille (L5) ; une sixième lentille (L6) ayant une réfringence négative, une surface côté image (S12) de celle-ci étant une face concave à proximité de l'axe optique ; une septième lentille (L7) ayant une réfringence positive, une surface côté objet (S12) de celle-ci étant une face convexe proche de l'axe optique ; une huitième lentille (L8) ayant une réfringence négative, une surface côté image (S16) étant une face concave à proximité de l'axe optique ; et le système optique (10) satisfaisant : 2,5 < f678/f6 < 8,5.
PCT/CN2021/090997 2021-04-29 2021-04-29 Système optique, module de caméra et dispositif électronique WO2022226896A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56119109A (en) * 1980-02-23 1981-09-18 Mamiya Koki Kk Wide angle zoom lens
CN107831588A (zh) * 2017-11-29 2018-03-23 浙江舜宇光学有限公司 光学成像镜头
CN110456490A (zh) * 2019-09-20 2019-11-15 浙江舜宇光学有限公司 摄像透镜组
US20200064593A1 (en) * 2018-08-21 2020-02-27 Calin Technology Co., Ltd. Optical image lens
CN112083550A (zh) * 2019-06-12 2020-12-15 大立光电股份有限公司 摄影镜头组、取像装置及电子装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56119109A (en) * 1980-02-23 1981-09-18 Mamiya Koki Kk Wide angle zoom lens
CN107831588A (zh) * 2017-11-29 2018-03-23 浙江舜宇光学有限公司 光学成像镜头
US20200064593A1 (en) * 2018-08-21 2020-02-27 Calin Technology Co., Ltd. Optical image lens
CN112083550A (zh) * 2019-06-12 2020-12-15 大立光电股份有限公司 摄影镜头组、取像装置及电子装置
CN110456490A (zh) * 2019-09-20 2019-11-15 浙江舜宇光学有限公司 摄像透镜组

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