WO2020164236A1 - Lentille d'imagerie optique - Google Patents

Lentille d'imagerie optique Download PDF

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Publication number
WO2020164236A1
WO2020164236A1 PCT/CN2019/102143 CN2019102143W WO2020164236A1 WO 2020164236 A1 WO2020164236 A1 WO 2020164236A1 CN 2019102143 W CN2019102143 W CN 2019102143W WO 2020164236 A1 WO2020164236 A1 WO 2020164236A1
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Prior art keywords
lens
optical imaging
object side
imaging lens
optical
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PCT/CN2019/102143
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English (en)
Chinese (zh)
Inventor
贺凌波
王健
戴付建
赵烈烽
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浙江舜宇光学有限公司
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Publication of WO2020164236A1 publication Critical patent/WO2020164236A1/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
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—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 application relates to an optical imaging lens, and more specifically, to an optical imaging lens including five lenses.
  • the principle of the emerging zoom dual camera technology is to use the different physical focal lengths of the dual cameras on the rear of the mobile phone to achieve different shooting effects.
  • This technology generally requires the use of a telephoto lens to achieve zooming and shooting of longer-distance objects, while achieving the effects of highlighting the subject and blurring the background, so as to meet the imaging needs of multiple scenes through the use of multiple optical lenses.
  • the F-number (Fno) of the existing telephoto lens is mostly above 2.0, but in the case of insufficient light (such as rainy days, dusk, etc.), the F-number above 2.0 can no longer meet the higher-order imaging requirements.
  • the present application provides an optical imaging lens suitable for portable electronic products, which can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art.
  • an optical imaging lens includes a first lens, a second lens, a third lens, and a fourth lens with refractive power from the object side to the image side in order along the optical axis.
  • the fifth lens may have positive refractive power, the object side surface may be convex, and the image side surface may be convex; the second lens may have negative refractive power, the object side surface may be a convex surface, and the image side surface may be a concave surface.
  • the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens may satisfy TTL/f ⁇ 1.0.
  • the aperture number Fno of the optical imaging lens may satisfy Fno ⁇ 2.0.
  • the separation distance T34 between the third lens and the fourth lens on the optical axis, the separation distance T23 between the second lens and the third lens on the optical axis and the fourth lens and the fifth lens on the optical axis can satisfy 0.3 ⁇ T34/(T23+T45) ⁇ 1.5.
  • the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens may satisfy 0.5 ⁇ f1/f ⁇ 1.0.
  • the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens may satisfy -1.5 ⁇ f2/f ⁇ -0.5.
  • the radius of curvature R1 of the object side surface of the first lens and the total effective focal length f of the optical imaging lens may satisfy 0 ⁇ R1/f ⁇ 0.5.
  • the radius of curvature R4 of the image side surface of the second lens and the total effective focal length f of the optical imaging lens may satisfy 0 ⁇ R4/f ⁇ 1.0.
  • the central thickness CT5 of the fifth lens on the optical axis and the separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy 0 ⁇ CT5/T45 ⁇ 1.0.
  • the combined focal length f23 of the second lens and the third lens and the effective focal length f1 of the first lens may satisfy -2.0 ⁇ f23/f1 ⁇ -1.0.
  • the on-axis distance from the intersection point of the object side surface of the first lens and the optical axis to the apex of the effective radius of the object side surface of the first lens SAG11 and the intersection point of the object side surface of the fifth lens and the optical axis to the object side surface of the fifth lens can satisfy -2.0 ⁇ SAG11/SAG51 ⁇ -0.5.
  • the maximum effective radius DT51 of the object side surface of the fifth lens and the maximum effective radius DT22 of the image side surface of the second lens may satisfy 1.5 ⁇ DT51/DT22 ⁇ 2.0.
  • the sum of the separation distances of any two adjacent lenses from the first lens to the fifth lens on the optical axis ⁇ AT and the sum of the central thicknesses of the first lens to the fifth lens on the optical axis ⁇ CT It can satisfy 1.0 ⁇ AT/ ⁇ CT ⁇ 1.5.
  • This application uses five lenses.
  • the above-mentioned optical lens group has the advantages of miniaturization, large aperture, and long At least one beneficial effect such as focal length and high imaging quality.
  • FIGS. 2A to 2D show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration of the optical imaging lens of Embodiment 1 respectively curve;
  • FIG 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application
  • FIGS. 4A to 4D show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration of the optical imaging lens of Embodiment 2 respectively curve;
  • FIG. 5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application
  • FIGS. 6A to 6D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and chromatic aberration of magnification of the optical imaging lens of Embodiment 3 curve;
  • FIG. 7 shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application
  • FIGS. 8A to 8D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and chromatic aberration of magnification of the optical imaging lens of Embodiment 4 curve;
  • FIGS. 10A to 10D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and chromatic aberration of magnification of the optical imaging lens of Embodiment 5 curve;
  • FIG. 11 shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application
  • FIGS. 12A to 12D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and chromatic aberration of magnification of the optical imaging lens of Embodiment 6 curve;
  • FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application
  • FIGS. 14A to 14D show the axial chromatic aberration curve, astigmatism curve, distortion curve, and chromatic aberration of magnification of the optical imaging lens of Embodiment 7 respectively curve;
  • FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application
  • FIGS. 16A to 16D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration of the optical imaging lens of Embodiment 8 curve.
  • first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any restriction on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as a second lens or a third lens.
  • the thickness, size, and shape of the lens have been slightly exaggerated for ease of description.
  • the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspheric surface is not limited to the shape of the spherical surface or the aspheric surface shown in the drawings.
  • the drawings are only examples and are not drawn strictly to scale.
  • the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is at least in the paraxial region. Concave. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens.
  • the optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses having optical power, that is, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens.
  • the five lenses are arranged in order from the object side to the image side along the optical axis.
  • any two adjacent lenses may have an air gap.
  • the first lens may have positive refractive power, the object side may be convex, and the image side may be convex; the second lens may have negative refractive power, the object side may be convex, and the image side may be convex Concave surface; the third lens has positive or negative refractive power; the fourth lens has positive or negative refractive power; the fifth lens has positive or negative refractive power.
  • a reasonable combination of the optical power and surface shape of the first lens can ensure that the first lens has good workability and enable the optical imaging lens to have a small field of view.
  • Reasonably matching the optical power and surface shape of the second lens, combined with the first lens, is beneficial to correct the off-axis aberration of the optical imaging lens and improve the imaging quality.
  • the optical imaging lens according to the present application may satisfy the conditional TTL/f ⁇ 1.0, where TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, and f is The total effective focal length of the optical imaging lens. More specifically, TTL and f may further satisfy 0.98 ⁇ TTL/f ⁇ 1.00. By controlling the ratio of the on-axis distance from the object side of the first lens to the imaging surface and the total effective focal length of the optical imaging lens, the lens can effectively maintain the characteristics of the telephoto lens.
  • the optical imaging lens according to the present application may satisfy the conditional expression 0.3 ⁇ T34/(T23+T45) ⁇ 1.5, where T34 is the separation distance between the third lens and the fourth lens on the optical axis, and T23 Is the separation distance between the second lens and the third lens on the optical axis, and T45 is the separation distance between the fourth lens and the fifth lens on the optical axis. More specifically, T34, T23, and T45 may further satisfy 0.30 ⁇ T34/(T23+T45) ⁇ 1.18. By constraining the ratio of T34 to the sum of T23 and T45, the contribution of curvature of field of the optical imaging lens field of view is controlled within a reasonable range.
  • the optical imaging lens according to the present application may satisfy the conditional formula 0.5 ⁇ f1/f ⁇ 1.0, where f1 is the effective focal length of the first lens, and f is the total effective focal length of the optical imaging lens. More specifically, f1 and f may further satisfy 0.5 ⁇ f1/f ⁇ 0.6, for example, 0.52 ⁇ f1/f ⁇ 0.58.
  • f1 and f may further satisfy 0.5 ⁇ f1/f ⁇ 0.6, for example, 0.52 ⁇ f1/f ⁇ 0.58.
  • the optical imaging lens according to the present application may satisfy the conditional expression -1.5 ⁇ f2/f ⁇ -0.5, where f2 is the effective focal length of the second lens, and f is the total effective focal length of the optical imaging lens. More specifically, f2 and f may further satisfy -1.08 ⁇ f2/f ⁇ -0.80.
  • f2 and f may further satisfy -1.08 ⁇ f2/f ⁇ -0.80.
  • the optical imaging lens according to the present application may satisfy the conditional expression 0 ⁇ R1/f ⁇ 0.5, where R1 is the radius of curvature of the object side surface of the first lens, and f is the total effective focal length of the optical imaging lens. More specifically, R1 and f may further satisfy 0.3 ⁇ R1/f ⁇ 0.4, for example, 0.31 ⁇ R1/f ⁇ 0.33. Reasonably control the ratio of the curvature radius of the object side surface of the first lens to the total effective focal length of the optical imaging lens, and can control the curvature of the object side surface of the first lens so that the contribution of field curvature is within a reasonable range, and the object side surface of the first lens is reduced. Optical sensitivity.
  • the optical imaging lens according to the present application may satisfy the conditional expression 0 ⁇ R4/f ⁇ 1.0, where R4 is the curvature radius of the image side surface of the second lens, and f is the total effective focal length of the optical imaging lens. More specifically, R4 and f may further satisfy 0.2 ⁇ R4/f ⁇ 0.6, for example, 0.27 ⁇ R4/f ⁇ 0.55.
  • Reasonably controlling the ratio of the curvature radius of the second lens image side to the total effective focal length of the optical imaging lens can control the curvature of the second lens image side, effectively reducing axial chromatic aberration, and ensuring better imaging quality.
  • the optical imaging lens according to the present application may satisfy the conditional expression 0 ⁇ CT5/T45 ⁇ 1.0, where CT5 is the central thickness of the fifth lens on the optical axis, and T45 is the fourth lens and the fifth lens The separation distance on the optical axis. More specifically, CT5 and T45 may further satisfy 0.1 ⁇ CT5/T45 ⁇ 0.6, for example, 0.15 ⁇ CT5/T45 ⁇ 0.56. Reasonably restricting the ratio of the center thickness of the fifth lens on the optical axis to the air space between the fourth lens and the fifth lens on the optical axis can effectively control the field curvature and distortion of the optical imaging lens and improve the imaging quality of the lens.
  • the optical imaging lens according to the present application may satisfy the conditional expression -2.0 ⁇ f23/f1 ⁇ -1.0, where f23 is the combined focal length of the second lens and the third lens, and f1 is the effective focal length. More specifically, f23 and f1 may further satisfy -1.88 ⁇ f23/f1 ⁇ -1.18.
  • the second lens and the third lens can be combined as an optical component group with a reasonable negative refractive power, which can be compared with the front end. The aberrations generated by the optical group members with positive refractive power are balanced to obtain good image quality.
  • the optical imaging lens according to the present application may satisfy the conditional expression 1.0 ⁇ AT/ ⁇ CT ⁇ 1.5, where ⁇ AT is that any two adjacent lenses from the first lens to the fifth lens are on the optical axis
  • ⁇ CT is the sum of the central thickness of the first lens to the fifth lens on the optical axis.
  • ⁇ AT and ⁇ CT can further satisfy 1.05 ⁇ AT/ ⁇ CT ⁇ 1.48.
  • the optical imaging lens according to the present application may satisfy the conditional expression -2.0 ⁇ SAG11/SAG51 ⁇ -0.5, where SAG11 is the distance between the intersection of the object side surface of the first lens and the optical axis to the object side surface of the first lens The on-axis distance of the apex of the effective radius, SAG51 is the on-axis distance from the intersection of the object side of the fifth lens and the optical axis to the apex of the effective radius of the fifth lens. More specifically, SAG11 and SAG51 may further satisfy -1.88 ⁇ SAG11/SAG51 ⁇ -0.69. By reasonably controlling the ratio of the sagittal height of the object side of the first lens to the sagittal height of the fifth lens, it is beneficial to reduce the sensitivity of the first objective lens and the fifth objective lens, and facilitate the processing and molding of the lens.
  • the optical imaging lens according to the present application may satisfy the conditional formula 1.5 ⁇ DT51/DT22 ⁇ 2.0, where DT51 is the maximum effective radius of the object side of the fifth lens, and DT22 is the image side of the second lens. Maximum effective radius. More specifically, DT51 and DT22 can further satisfy 1.59 ⁇ DT51/DT22 ⁇ 1.89.
  • the shapes of the fifth lens and the second lens can be effectively restricted, thereby effectively improving the illuminance characteristics of the optical imaging lens.
  • the above-mentioned optical imaging lens may further include a diaphragm to improve the imaging quality of the lens group.
  • the diaphragm may be provided between the object side and the first lens.
  • the above-mentioned optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element located on the imaging surface.
  • the optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, for example, the above-mentioned five lenses.
  • the optical imaging lens is more conducive to production and processing and can be applied to portable electronic products.
  • the optical lens configured as described above can also have beneficial effects such as ultra-thin, large aperture, long focal length, and high imaging quality.
  • At least one of the mirror surfaces of each lens is an aspheric mirror surface, that is, the object side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens
  • At least one of the and image side surfaces is an aspherical mirror surface.
  • the characteristic of an aspheric lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspheric lens has better curvature radius characteristics, and has the advantages of improving distortion and astigmatic aberration.
  • the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are aspheric mirror surfaces.
  • the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification.
  • the optical imaging lens is not limited to including five lenses. If necessary, the optical imaging lens may also include other numbers of lenses.
  • FIG. 1 shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface.
  • the fifth lens E5 has negative refractive power, the object side surface S9 is concave, and the image side surface S10 is convex.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 1, wherein the units of the radius of curvature and the thickness are millimeters (mm).
  • each aspheric lens can be defined by but not limited to the following aspheric formula:
  • x is the distance vector height of the aspheric surface at a height h along the optical axis direction;
  • k is the conic coefficient;
  • Ai is the correction coefficient of the i-th order of the aspheric surface.
  • Table 2 shows the high-order coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 that can be used for each aspheric mirror surface S1-S10 in Example 1. .
  • Table 3 shows the effective focal length f1 to f5 of each lens in Example 1, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 2B shows the astigmatism curve of the optical imaging lens of Example 1, which represents meridional field curvature and sagittal field curvature.
  • FIG. 2C shows a distortion curve of the optical imaging lens of Example 1, which represents the magnitude of distortion at different image heights.
  • 2D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 2A to 2D, it can be seen that the optical imaging lens provided in Embodiment 1 can achieve good imaging quality.
  • FIG. 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a positive refractive power, the object side surface S5 is concave, and the image side surface S6 is convex.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 2, wherein the units of the radius of curvature and thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 5 shows the coefficients of higher-order terms that can be used for each aspheric mirror surface in Embodiment 2, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 6 shows the effective focal length f1 to f5 of each lens in Example 2, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 4A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 4B shows the astigmatism curve of the optical imaging lens of Example 2, which represents meridional field curvature and sagittal field curvature.
  • FIG. 4C shows a distortion curve of the optical imaging lens of Embodiment 2, which represents the magnitude of distortion at different image heights.
  • FIG. 4D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 2, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 4A to 4D that the optical imaging lens provided in Embodiment 2 can achieve good imaging quality.
  • FIG. 5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has negative refractive power, the object side surface S5 is concave, and the image side surface S6 is convex.
  • the fourth lens E4 has negative refractive power, the object side surface S7 is convex, and the image side surface S8 is concave.
  • the fifth lens E5 has negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 3.
  • the units of the radius of curvature and thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 8 shows the coefficients of higher-order terms that can be used for each aspheric mirror surface in Embodiment 3, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 9 shows the effective focal length f1 to f5 of each lens in Example 3, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 6A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 6B shows the astigmatism curve of the optical imaging lens of Example 3, which represents meridional field curvature and sagittal field curvature.
  • FIG. 6C shows a distortion curve of the optical imaging lens of Embodiment 3, which represents the magnitude of distortion at different image heights.
  • FIG. 6D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 6A to 6D, it can be known that the optical imaging lens provided in Embodiment 3 can achieve good imaging quality.
  • FIG. 7 shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 4, wherein the units of the radius of curvature and the thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 11 shows the coefficients of higher-order terms that can be used for each aspheric mirror surface in Embodiment 4, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 12 shows the effective focal length f1 to f5 of each lens in Example 4, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 8A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 8B shows the astigmatism curve of the optical imaging lens of Example 4, which represents meridional field curvature and sagittal field curvature.
  • FIG. 8C shows a distortion curve of the optical imaging lens of Example 4, which represents the magnitude of distortion at different image heights.
  • FIG. 8D shows a chromatic aberration curve of magnification of the optical imaging lens of Embodiment 4, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 8A to 8D that the optical imaging lens provided in Embodiment 4 can achieve good imaging quality.
  • FIG. 9 shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has negative refractive power
  • the object side surface S9 is a convex surface
  • the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, wherein the units of the radius of curvature and the thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 14 shows the coefficients of higher-order terms that can be used for each aspheric mirror surface in Embodiment 5, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 15 shows the effective focal length f1 to f5 of each lens in Example 5, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 10A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which indicates the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 10B shows the astigmatism curve of the optical imaging lens of Example 5, which represents meridional field curvature and sagittal field curvature.
  • FIG. 10C shows a distortion curve of the optical imaging lens of Embodiment 5, which represents the magnitude of distortion at different image heights.
  • FIG. 10D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 5, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 10A to 10D that the optical imaging lens provided in Embodiment 5 can achieve good imaging quality.
  • FIG. 11 shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens E5 has negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, wherein the units of the radius of curvature and thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 17 shows the coefficients of higher-order terms that can be used for each aspheric mirror surface in Embodiment 6, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 18 shows the effective focal length f1 to f5 of each lens in Example 6, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 12B shows the astigmatism curve of the optical imaging lens of Example 6, which represents meridional field curvature and sagittal field curvature.
  • FIG. 12C shows a distortion curve of the optical imaging lens of Example 6, which represents the magnitude of distortion at different image heights.
  • FIG. 12D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 6, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 12A to 12D, it can be seen that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.
  • FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens E5 has negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 7, wherein the units of the radius of curvature and the thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 20 shows the coefficients of the higher-order terms that can be used for each aspheric mirror surface in Embodiment 7, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 21 shows the effective focal length f1 to f5 of each lens in Example 7, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 14A shows the axial chromatic aberration curve of the optical imaging lens of Example 7, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 14B shows the astigmatism curve of the optical imaging lens of Example 7, which represents meridional field curvature and sagittal field curvature.
  • FIG. 14C shows a distortion curve of the optical imaging lens of Example 7, which represents the magnitude of distortion at different image heights.
  • FIG. 14D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 7, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 14A to 14D that the optical imaging lens provided in Embodiment 7 can achieve good imaging quality.
  • FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. , Filter E6 and imaging surface S13.
  • the first lens E1 has a positive refractive power, the object side S1 is convex, and the image side S2 is convex.
  • the second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has negative refractive power, the object side surface S7 is convex, and the image side surface S8 is concave.
  • the fifth lens E5 has a positive refractive power
  • the object side surface S9 is a convex surface
  • the image side surface S10 is a concave surface.
  • the filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through each surface S1 to S12 and is finally imaged on the imaging surface S13.
  • Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, wherein the units of the radius of curvature and the thickness are millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces.
  • Table 23 shows the coefficients of higher-order terms that can be used for each aspheric mirror surface in Embodiment 8, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 24 shows the effective focal length f1 to f5 of each lens in Example 8, the total effective focal length f of the optical imaging lens, the distance from the object side S1 of the first lens E1 to the imaging surface S13 on the optical axis TTL, and the imaging surface S13
  • the upper effective pixel area is half the diagonal length ImgH, the maximum half-field angle Semi-FOV, and the aperture number Fno.
  • FIG. 16A shows the axial chromatic aberration curve of the optical imaging lens of Example 8, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 16B shows the astigmatism curve of the optical imaging lens of Example 8, which represents meridional field curvature and sagittal field curvature.
  • FIG. 16C shows a distortion curve of the optical imaging lens of Example 8, which represents the magnitude of distortion at different image heights.
  • 16D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 8, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 16A to 16D, it can be seen that the optical imaging lens provided in Embodiment 8 can achieve good imaging quality.
  • Example 1 to Example 8 respectively satisfy the relationships shown in Table 25.
  • the present application also provides an imaging device, the electronic photosensitive element of which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
  • the imaging device may be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone.
  • the imaging device is equipped with the optical imaging lens described above.

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

Abstract

L'invention concerne une lentille d'imagerie optique, comprenant séquentiellement d'un côté objet à un côté image le long d'un axe optique : une première lentille (E1), une deuxième lentille (E2), une troisième lentille (E3), une quatrième lentille (E4) et une cinquième lentille (E5). La première lentille (E1) a une puissance focale positive, une surface côté objet (S1) de celle-ci est convexe et une surface côté image (S2) de celle-ci est convexe ; la deuxième lentille (E2) a une puissance focale négative, une surface côté objet (S3) de celle-ci est convexe et une surface côté image (S4) de celle-ci est concave ; la distance TTL entre la surface côté objet (S1) de la première lentille (E1) et un plan d'imagerie (S13) de la lentille d'imagerie optique sur l'axe optique et la longueur focale effective totale f de la lentille d'imagerie optique satisfont TTL/f≤1,0 ; et le nombre d'ouvertures Fno de la lentille d'imagerie optique satisfait Fno<2,0.
PCT/CN2019/102143 2019-02-13 2019-08-23 Lentille d'imagerie optique WO2020164236A1 (fr)

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CN110412750A (zh) * 2019-09-05 2019-11-05 浙江舜宇光学有限公司 光学成像系统
CN111077651B (zh) * 2019-12-23 2021-09-28 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN111077646B (zh) * 2019-12-23 2021-07-30 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021196224A1 (fr) * 2020-04-03 2021-10-07 江西晶超光学有限公司 Système optique, module de lentille et dispositif terminal
CN112684587B (zh) * 2021-01-12 2022-08-19 浙江舜宇光学有限公司 一种光学成像镜头
CN113933970A (zh) * 2021-10-28 2022-01-14 玉晶光电(厦门)有限公司 光学成像镜头
CN114137700A (zh) * 2021-12-02 2022-03-04 Oppo广东移动通信有限公司 光学镜头、摄像头模组、电子设备
CN116381901B (zh) * 2023-03-31 2024-05-07 湖北华鑫光电有限公司 一种5p式小头部尺寸的手机镜头

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