WO2022226830A1 - Système optique, module de caméra, dispositif électronique et automobile - Google Patents

Système optique, module de caméra, dispositif électronique et automobile Download PDF

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Publication number
WO2022226830A1
WO2022226830A1 PCT/CN2021/090499 CN2021090499W WO2022226830A1 WO 2022226830 A1 WO2022226830 A1 WO 2022226830A1 CN 2021090499 W CN2021090499 W CN 2021090499W WO 2022226830 A1 WO2022226830 A1 WO 2022226830A1
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Prior art keywords
lens
optical system
object side
optical axis
convex
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PCT/CN2021/090499
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English (en)
Chinese (zh)
Inventor
党绪文
李明
刘彬彬
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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/CN2021/090499 priority Critical patent/WO2022226830A1/fr
Publication of WO2022226830A1 publication Critical patent/WO2022226830A1/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
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the present invention relates to the technical field of photography, in particular to an optical system, a camera module, an electronic device and an automobile.
  • an optical system a camera module, an electronic device, and an automobile are provided.
  • An optical system comprising in sequence from the object side to the image side along the optical axis:
  • a first lens with negative refractive power the object side of the first lens is convex, and the image side is concave;
  • the object side of the second lens is convex at the near optical axis
  • the object side of the fourth lens is convex at the near optical axis
  • the object side of the fifth lens is convex at the near optical axis
  • the image side surface of the sixth lens is convex near the maximum effective aperture
  • optical system satisfies the following relationship:
  • FOV is the maximum field angle of the optical system
  • TTL is the distance from the object side of the first lens to the imaging surface of the optical system on the optical axis.
  • 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.
  • An automobile includes a mounting portion and the above-mentioned imaging device, wherein the imaging device is provided on the mounting portion.
  • 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 diagram of a camera module provided by an embodiment of the application.
  • FIG. 15 is a schematic structural diagram of an automobile according to an embodiment of the application.
  • the optical system 10 includes sequentially from the object side to the image side along the optical axis 101 : a first lens L1 with negative refractive power, and a second lens with positive or negative refractive power L2, the third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive or negative refractive power, and the sixth lens L6 with positive or negative refractive power.
  • the optical axes of the six lenses are in the same straight line, which 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 optical system 10 also has an imaging surface S13 located on the image side of the sixth lens L6.
  • the imaging surface S13 of the optical system 10 coincides with the photosensitive surface of the image sensor, and the incident light rays at infinity in the central field of view are sequentially adjusted by the lenses of the optical system 10 and then converge on the imaging surface S13 .
  • the object side S1 of the first lens L1 is convex, and the image side S2 is concave; the object side S3 of the second lens L2 is convex at the near optical axis; the object side S7 of the fourth lens L4 is at The near optical axis is convex; the object side S9 of the fifth lens L5 is convex near the near optical axis; the image side S12 of the sixth lens L6 is convex near the maximum effective aperture.
  • 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; when it is described that the lens surface has a certain surface shape near the maximum effective aperture, it is the The lens surface has this kind of surface shape near the maximum effective aperture in the direction from the center to the edge.
  • the first lens L1 has a negative refractive power
  • the object side S1 is convex
  • the image side S2 is concave
  • the object side S3 of the second lens L2 at the near optical axis is Convex, which is beneficial for the two lenses of the optical system 10 closest to the object side to deflect the incident light with a larger included angle to the optical axis.
  • the third lens L3 and the fourth lens L4 both have positive refractive power, which can adjust the incident light after being deflected by the object lens in time, so as to realize timely correction of aberrations, and at the same time, because of the positive refractive power It is shared between two lenses, thereby preventing a single lens from bearing a large positive refractive power burden and causing overcorrection problems.
  • the fourth lens L4 has a positive refractive power
  • the object side S7 of the fourth lens L4 and the object side S9 of the fifth lens L5 are convex at the near optical axis, so that the incident light corresponding to each field of view can be converged, so as to facilitate shortening The convergence distance of the incident rays.
  • the image side surface S12 of the sixth lens L6 is also beneficial to further shorten the convergence distance of the incident light corresponding to the edge field of view, and the surface of the fourth lens L4 and the fifth lens L5 can be matched with the above-mentioned surfaces of the fourth lens L4 and the fifth lens L5.
  • This type of design can help to deflect the incident light at a small angle, and further shorten the distance between the converging surface of the incident light corresponding to each field of view and the lens group, thereby achieving the effect of effectively compressing the total length of the optical system 10 .
  • the optical system 10 having the above-mentioned design can achieve both a large viewing angle and a compact design.
  • the optical system 10 provided in the embodiment of the present application also satisfies the relationship: 28.0deg/mm ⁇ FOV/TTL ⁇ 40.0deg/mm; FOV is the maximum angle of view of the optical system 10, and TTL is the object of the first lens L1 The distance from the side surface S1 to the imaging surface S13 of the optical system 10 on the optical axis 101 .
  • the optical system 10 further satisfies the conditions of the above relational expression, the maximum angle of view and the total optical length of the optical system 10 with the above-mentioned refractive power and surface design can be reasonably configured, so that the optical system 10 can be kept small in size.
  • the small-sized optical system 10 can also obtain an ultra-wide shooting angle of view; in addition, it can also prevent the ratio of the viewing angle and the total optical length from being too large to cause incidents.
  • the deflection of light in the optical system 10 is too strong, which is beneficial to suppress aberrations such as field curvature, astigmatism, and distortion in the edge field of view.
  • the relationship satisfied by the optical system 10 may specifically be 29, 29.3, 29.5, 32, 35, 37, 37.5, 38, or 38.5, and the numerical unit is deg/mm.
  • the optical system 10 also satisfies at least one of the following relationships, and when any relationship is satisfied, it can have corresponding technical effects:
  • the optical system 10 will have an ultra-wide-angle design, and the overall length of the optical system 10 is effectively controlled, avoiding the large-scale structure of a traditional system with an ultra-wide viewing angle.
  • the FOV can also be understood as the maximum angle of view of the optical system 10 corresponding to the diagonal direction of the rectangular effective pixel area of the image sensor.
  • f123 is the combined focal length of the first lens L1
  • f456 is the combined focal length of the fourth lens L4, the fifth lens L5 and the sixth lens L6.
  • the surface design of the first lens L1 and the second lens L2 reasonably guides the light incident from a large angle, avoiding the introduction of excessive distortion and astigmatism; at the same time, it cooperates with the third lens L3 to the sixth lens L6 to reasonably change the surface shape and refractive index
  • the force distribution is also beneficial to provide reasonable aberration compensation, which helps to reduce the tolerance sensitivity of the optical system 10 and improve the image quality.
  • the relationship satisfied by the optical system 10 may specifically be 0.65, 0.7, 0.8, 0.9, 1.1, 1.3, 1.35, 1.38 or 1.4.
  • the optical system 10 includes an aperture stop STO, and the aperture stop STO is provided between the second lens L2 and the fifth lens L5.
  • the relationship satisfied by the optical system 10 may specifically be 2.8, 3.1, 3.5, 4, 5.7, 6.5, 7.3, 14, 26, 31, 35 or 37.
  • the optical system 10 that satisfies this relationship has a larger aperture, so that the system has a good diffraction limit, and the optical system 10 with the above design can have a good refraction effect, so that the optical system 10 has a wide-angle characteristic. Illumination and resolution.
  • the optical system 10 Clear images of scenes at various object distances can also be obtained.
  • IMGH 1.5 ⁇ IMGH/BF ⁇ 4.0; BF>0.85mm; IMGH is the image height corresponding to the maximum angle of view of the optical system 10, and BF is the optical axis from the image side S12 of the sixth lens L6 to the imaging surface S13 of the optical system 10 Distance on 101.
  • IMGH can also be understood as the diagonal length of the rectangular effective imaging area on the imaging surface S13.
  • 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 rear end of the mirror group of the optical system 10 can be kept at a relatively large distance from the imaging surface S13, so as to provide a larger protection space for the rear end of the mirror group of the optical system 10, and it is also beneficial to Reduce the difficulty of the assembly process and increase the production yield; in addition, a larger back focus can reduce the difference between the maximum effective aperture of the sixth lens L6 and the maximum effective aperture of the fifth lens L5, which is beneficial to reduce the structural arrangement of the optical system 10 Difficulty and size reduction.
  • the optical system 10 with a wide-angle design can be matched with a high-pixel image sensor, so that the optical system 10 can meet the requirements of large viewing angle and high pixel at the same time. Therefore, it is also beneficial to increase the universality of the optical system 10 to the image sensor and reduce the assembly difficulty.
  • the IMGH/BF relationship satisfied by the optical system 10 may specifically be 1.98, 2.05, 2.2, 2.5, 2.8, 3, 3.4, 3.6, 3.75 or 3.8.
  • R62 is the curvature radius of the image side surface S12 of the sixth lens L6 at the optical axis 101
  • f6 is the effective focal length of the sixth lens L6.
  • the image side S12 of the sixth lens L6 is convex at the maximum effective aperture, which is beneficial to the design of the rear end of the lens barrel and the reservation of the glue dispensing groove. And when this relationship is satisfied, the surface shape of the image side surface S12 of the sixth lens L6 at the near optical axis can be reasonably constrained, which is beneficial to reduce the degree of sudden change of the edge surface shape, reduce the degree of surface inflection, and then better.
  • the optical system 10 avoids the risk of light leakage and stray light occurring when the incident light passes through the sixth lens L6.
  • the surface matching relationship between the fifth lens L5 and the sixth lens L6 changes correspondingly, but when the relationship is satisfied, the optical system 10 can still be obtained. excellent aberration compensation effect and good image quality.
  • the relationship satisfied by the optical system 10 may specifically be 1.15, 1.3, 1.6, 2, 2.7, 3.3, 4, 5.2, 5.7 or 6.0.
  • R51 is the curvature radius of the object side S9 of the fifth lens L5 at the optical axis 101
  • R61 is the curvature radius of the object side S11 of the sixth lens L6 at the optical axis 101 Radius of curvature.
  • the object side S9 of the fifth lens L5 is a convex surface near the optical axis, and when R51>1.1mm, it can prevent the surface shape near the optical axis from changing drastically, so that the surface shape near the optical axis transitions smoothly, which is conducive to reducing the The degree of deflection of the marginal field of view light when passing through the fifth lens L5, on the other hand, can effectively control the tolerance sensitivity of the object side S9 of the fifth lens L5, and avoid the illuminance inflection phenomenon in the final image.
  • the object side profiles of the fifth lens L5 and the sixth lens L6 can be reasonably configured, which can better correct chromatic aberration, astigmatism and distortion, and improve the system resolution.
  • the R51/R61 relationship satisfied by the optical system 10 may specifically be 1.2, 1.6, 2, 2.5, 3, 3.3, 3.5, 3.8, 12.5, 43 or 45.
  • CT34 is the distance from the image side S6 of the third lens L3 to the object side S7 of the fourth lens L4 on the optical axis 101
  • CT45 is the image side S8 to the fourth lens L4.
  • CT56 is the distance from the image side S10 of the fifth lens L5 to the object side S11 of the sixth lens L6 on the optical axis 101 .
  • the relationship satisfied by the optical system 10 may specifically be 48, 50, 54, 59, 64, 68, 73, 75 or 78.
  • the reference wavelength of the Abbe number, effective focal length, and combined focal length in the above conditions is 587.56 nm, and the effective focal length and combined focal length at least refer to the values 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 six-piece optical system 10 with the above-mentioned lens design.
  • the lens design (number of lenses, refractive power configuration, surface configuration, etc.) of the 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 relationships are satisfied, and may even lead to the occurrence of imaging performance. Decreased significantly.
  • the optical system 10 includes an aperture stop STO, which may be disposed between two adjacent lenses of the second lens L2 and the fifth lens L5.
  • At least one lens in the optical system 10 has an aspherical surface.
  • the lens is said to have an aspherical surface.
  • both the object side surface and the image side surface of each lens can be designed as aspherical surfaces.
  • the aspheric surface configuration can further help the optical system 10 to eliminate aberrations more effectively and improve the imaging quality, and is also conducive to the miniaturized design of the optical system 10, so that the optical system 10 can maintain the miniaturized design at the same time. Has excellent optical effects.
  • At least one lens in the optical system 10 may have a spherical surface type, and the design of the spherical surface type can reduce the manufacturing difficulty of the lens and reduce the manufacturing cost. It should be noted that there may be certain deviations in the ratios of dimensions such as the thickness and surface curvature of each lens in the drawings. It should also be noted that when the object side or image side of a lens is aspheric, the surface may have a recurve structure, and the surface shape of the surface will change from the center to the edge.
  • 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.
  • the material of at least one lens in the optical system 10 is 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).
  • the lens with plastic material can reduce the production cost of the optical system 10 , while the lens with glass material can withstand higher or lower temperature and has excellent optical effect and better stability.
  • at least two lenses of different materials may be provided in the optical system 10 , for example, a combination of glass lenses and plastic lenses may be used, but the specific configuration relationship can be determined according to actual needs, which is not exhaustive here. .
  • optical system 10 of the present application will be described below through more specific embodiments:
  • the optical system 10 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power along the optical axis 101 from the object side to the image side.
  • the surface shape of each lens in the optical system 10 is 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 concave 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 concave at the near optical axis; the object side S5 is convex 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 convex at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is convex 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 concave 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 convex 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. .
  • each lens surface of the first lens L1 to the sixth lens L6 is aspherical, and the material of each lens is plastic.
  • 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 sequentially arranged in the order from top to bottom in Table 1, wherein the stop represents the aperture stop STO.
  • the optical filter 110 can be a part of the optical system 10 or can be removed from the optical system 10, but after the optical filter 110 is removed, the optical total length of the optical system 110 remains unchanged.
  • the filter 110 may be an infrared cut filter.
  • the Y radius is the curvature radius of the corresponding surface of the lens at the optical axis 101
  • the Y aperture is the maximum effective aperture (maximum effective clear aperture) of the corresponding lens surface in the Y direction.
  • the surface with the surface number 1 represents the object side of the first lens
  • the surface with the surface number 2 represents the image side of the first lens.
  • the absolute value of the first value of the lens in the "Thickness" parameter column is the thickness of the lens on the optical axis 101
  • the absolute value of the second value is the image side of the lens to the next optical element (lens or diaphragm). ) on the optical axis 101, wherein the thickness parameter of the diaphragm represents the distance on the optical axis 101 from the diaphragm surface to the object side of the adjacent lens on the image side.
  • the reference wavelength of the refractive index, Abbe number, and focal length (effective focal length) of each lens in the table is 587.56 nm, and the numerical units of Y radius, thickness, focal length (effective focal length), and Y aperture are all millimeters (mm).
  • the parameter data and the lens surface structure used for 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 0.74mm
  • the aperture number FNO is 2.18
  • the total optical length TTL is 5mm
  • the maximum field of view angle FOV is 187°
  • the optical system 10 has ultra-wide-angle characteristics. .
  • Table 2 shows 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 optical system 10 when the optical system 10 satisfies the condition of the relational expression, the maximum angle of view and the total optical length of the optical system 10 with the above-mentioned refractive power and surface design can be reasonably configured, so that the optical system 10 further has the wide-angle feature while keeping the small size, breaking through the large size limitation of the traditional ultra-wide viewing angle system, so that the small-sized optical system 10 can also obtain an ultra-wide shooting angle of view; in addition, it can prevent the field of view and the total optical length If the ratio of ⁇ is too large, the deflection of the incident light in the optical system 10 is too strong, which is beneficial to suppress aberrations such as field curvature, astigmatism, and distortion of the edge field of view.
  • the combined focal length of the front lens group (first lens L1 to third lens L3) and the rear lens group (fourth lens L4 to sixth lens L6) of the optical system 10 can be Reasonable constraints are obtained.
  • the surface design of the first lens L1 and the second lens L2 can guide the light incident at a large angle reasonably, avoiding the introduction of excessive distortion and astigmatism; at the same time, it can cooperate with the third lens L3 to the sixth lens.
  • the reasonable surface shape change and refractive force distribution of L6 are also beneficial to provide reasonable aberration compensation, which helps to reduce the tolerance sensitivity of the optical system 10 and improve the image quality.
  • the optical system 10 that satisfies this relationship has a larger aperture, so that the system has a good diffraction limit, and the optical system 10 with the above design can have a good refraction effect, so that the optical system 10 has a wide-angle characteristic. Illumination and resolution.
  • the optical system 10 can have a larger depth of field, which can reduce the sensitivity to the object distance, so that the shooting range is wider and the definition is higher. Even if the focusing operation is not performed, the optical system 10 can Clear images of scenes at various object distances can be obtained.
  • the rear end of the lens group of the optical system 10 can be kept at a large distance from the imaging surface S13, that is, it has a relatively large back focus, which can provide optical
  • the larger protection space at the rear end of the 10 lens groups of the system is also conducive to reducing the difficulty of the assembly process and increasing the production yield; in addition, the larger back focus can reduce the maximum effective aperture of the sixth lens L6 and the fifth lens L5.
  • the difference in the maximum effective aperture is beneficial to reduce the difficulty of structural arrangement and reduce the volume of the optical system 10 .
  • the optical system 10 with a wide-angle design can be matched with a high-pixel image sensor, so that the optical system 10 can meet the requirements of large viewing angle and high pixel at the same time.
  • the universality of image sensors reduces the difficulty of assembly.
  • V3+V5 47.03; when this relationship is satisfied, the chromatic aberration of the edge field of view of the wide-angle system can be properly corrected, to avoid color shift in the imaging of the large-angle field of view, and to improve the overall imaging stability of the system.
  • FIG. 2 includes longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the first embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587 nm.
  • Longitudinal Spherical Aberration shows the deviation of the convergence focus 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).
  • FIG. 2 also includes a field curvature diagram (Astigmatic Field Curves) of the optical system 10, wherein the S curve represents the sagittal field curvature at 587 nm, and the T curve represents the meridional field curvature at 587 nm.
  • S curve represents the sagittal field curvature at 587 nm
  • T curve represents the meridional field curvature at 587 nm.
  • the field curvature of the optical system is small, the maximum field curvature is controlled within ⁇ 0.02mm, 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 optical system 10 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, and an aperture stop STO along the optical axis 101 from the object side to the image side. , a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, a fifth lens L5 with negative refractive power, and a sixth lens L6 with positive refractive power.
  • the surface shape of each lens in the optical system 10 is 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 concave 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 convex at the near optical axis; the object side S3 is concave near the maximum effective aperture, and the image side S4 is convex 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 convex at the near optical axis, and the image side S8 is concave at the near optical axis; the object side S7 is concave near the maximum effective aperture, and the image side S8 is convex 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 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 convex 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 lens parameters of the optical system 10 in the second embodiment are given in Table 3 and Table 4, wherein the definitions of the names and parameters of each element can be obtained from the first embodiment, and will not be repeated here.
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power along the optical axis 101 from the object side to the image side.
  • the surface shape of each lens in the optical system 10 is 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 concave 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 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 convex 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 concave at the near optical axis, and the image side S12 is concave at the near optical axis; the object side S11 is concave near the maximum effective aperture, and the image side S12 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 a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power along the optical axis 101 from the object side to the image side.
  • the surface shape of each lens in the optical system 10 is 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 concave 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 concave at the near optical axis; the object side S5 is convex 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 convex at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is convex 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 convex at the near optical axis; the object side S9 is concave 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 concave at the near optical axis, and the image side S12 is convex at the near optical axis; the object side S11 is concave near the maximum effective aperture, and the image side S12 is convex near the maximum effective aperture. .
  • optical system 10 in this embodiment satisfies the following relationship:
  • the optical system 10 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power along the optical axis 101 from the object side to the image side.
  • the surface shape of each lens in the optical system 10 is 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 concave 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 concave 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 concave at the near optical axis; the object side S5 is convex 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 convex at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is convex 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 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 convex 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 lens parameters of the optical system 10 in the fifth embodiment are given in Table 9 and Table 10, 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 sequentially includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power along the optical axis 101 from the object side to the image side.
  • the surface shape of each lens in the optical system 10 is 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 concave 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 concave 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 convex at the near optical axis; the object side S7 is convex near the maximum effective aperture, and the image side S8 is convex 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 concave 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 convex at the near optical axis; the object side S11 is concave near the maximum effective aperture, and the image side S12 is convex near the maximum effective aperture. .
  • the lens parameters of the optical system 10 in the sixth embodiment are given in Table 11 and Table 12, 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 camera module 20 includes the optical system 10 and the image sensor 210 in any of the above-mentioned embodiments, and the image sensor 210 is disposed at the light output of the optical system 10 . side.
  • the image sensor 210 may be a CCD (Charge Coupled Device, charge coupled device) or a CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor).
  • the electronic device 30 includes a fixing member 310 , and the camera module 20 is mounted on the fixing member 310 .
  • the fixing member 310 may be a display screen cover, a circuit board, a middle frame, a back cover, and other components.
  • Electronic devices 30 include, but are not limited to, smartphones, smart watches, smart glasses, e-book readers, in-vehicle camera equipment, surveillance equipment, drones, medical equipment (such as endoscopes), tablet computers, biometric devices (such as fingerprints) Recognition equipment or pupil recognition equipment, etc.), PDA (Personal Digital Assistant, personal digital assistant), drones, etc.
  • the above camera module 20 it is not only beneficial to reduce the space occupied by the module in the electronic device 30 to facilitate the ultra-thin design of the device, but also enables the device to obtain a wide-angle shooting capability, so that a wider range of objects can be obtained. space scene.
  • the electronic device 30 is a vehicle-mounted camera device, and the camera module 20 is disposed in the fixing member 310 of the vehicle-mounted camera device.
  • the electronic device 30 can cooperate with on-board auxiliary systems such as an assisted driving system and a driver monitoring system, so as to transmit the obtained image information to the on-board control system to judge the road conditions or the driver's state, thereby providing timely warning to the driver.
  • the camera device 30 can also cooperate with the display screen in the cab, for example, the obtained images are displayed on the display screen for the driver to observe.
  • the automobile 40 includes a mounting portion 410 and the electronic device 30 described above, and the electronic device 30 is installed in the mounting portion 410 .
  • the mounting portion 410 may be a vehicle body part suitable for mounting a camera device, such as a front air intake grille, an interior rear-view mirror, a left rear-view mirror, a right rear-view mirror, a roof, a trunk cover, and the like.
  • a plurality of electronic devices 30 may be installed on the vehicle 40 to obtain omnidirectional image information of the vehicle body.
  • the driver or the in-vehicle system can obtain a wider range of road condition information around the car through the electronic device 30, so that even if the number of devices installed is reduced, it can obtain an all-round image of the car body and reduce dead spots;
  • the road condition image can meet the lower installation cost and improve driving safety due to better image clarity.
  • 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.

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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 négative, une surface côté objet convexe (S1) et une surface côté image concave (S2) ; une deuxième lentille (L2) ayant une réfringence, et une surface côté objet (S3) qui est convexe dans une région paraxiale ; une troisième lentille (L3) ayant une réfringence positive ; une quatrième lentille (L4) ayant une réfringence positive, et une surface côté objet (S7) qui est convexe dans une région paraxiale ; une cinquième lentille (L5) ayant une surface côté objet (S9) qui est convexe dans n une région paraxiale ; et une sixième lentille (L6) ayant une surface côté image (S11) qui est convexe à une position proche de l'ouverture efficace maximale. Le système optique (10) satisfait à la relation suivante : 28,0 deg/mm < FOV/TTL < 40,0 deg/mm.
PCT/CN2021/090499 2021-04-28 2021-04-28 Système optique, module de caméra, dispositif électronique et automobile WO2022226830A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106033141A (zh) * 2015-02-26 2016-10-19 大立光电股份有限公司 透镜***、取像装置及电子装置
JP2017223755A (ja) * 2016-06-14 2017-12-21 キヤノン株式会社 撮像光学系
CN108983401A (zh) * 2018-10-10 2018-12-11 浙江舜宇光学有限公司 光学透镜组
CN212483966U (zh) * 2020-05-29 2021-02-05 纮立光电股份有限公司 光学摄像透镜组、成像装置及电子装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106033141A (zh) * 2015-02-26 2016-10-19 大立光电股份有限公司 透镜***、取像装置及电子装置
JP2017223755A (ja) * 2016-06-14 2017-12-21 キヤノン株式会社 撮像光学系
CN108983401A (zh) * 2018-10-10 2018-12-11 浙江舜宇光学有限公司 光学透镜组
CN212483966U (zh) * 2020-05-29 2021-02-05 纮立光电股份有限公司 光学摄像透镜组、成像装置及电子装置

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