WO2022077608A1 - 摄像光学镜头 - Google Patents

摄像光学镜头 Download PDF

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Publication number
WO2022077608A1
WO2022077608A1 PCT/CN2020/125992 CN2020125992W WO2022077608A1 WO 2022077608 A1 WO2022077608 A1 WO 2022077608A1 CN 2020125992 W CN2020125992 W CN 2020125992W WO 2022077608 A1 WO2022077608 A1 WO 2022077608A1
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Prior art keywords
lens
curvature
imaging optical
ttl
image side
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PCT/CN2020/125992
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English (en)
French (fr)
Inventor
郭占利
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诚瑞光学(深圳)有限公司
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Publication of WO2022077608A1 publication Critical patent/WO2022077608A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces

Definitions

  • the invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses.
  • the lenses traditionally mounted on mobile phone cameras mostly use three-piece, four-piece, or even five-piece or six-piece lens structures.
  • the pixel area of the photosensitive device is continuously reduced, and the system's requirements for imaging quality are constantly improving.
  • the nine-piece lens structure gradually appears in the lens design.
  • the nine-piece lens has good optical performance, its optical power, lens spacing and lens shape setting are still unreasonable, resulting in the lens structure having good optical performance, it cannot meet the requirements of ultra-thin , Wide-angle design requirements.
  • the purpose of the present invention is to provide an imaging optical lens, which has good optical performance and at the same time meets the design requirements of ultra-thin and wide-angle.
  • embodiments of the present invention provide an imaging optical lens
  • the imaging optical lens includes a total of nine lenses, and the nine lenses are sequentially from the object side to the image side: the first lens, the second lens Second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens and ninth lens;
  • the first lens has negative refractive power
  • the second lens has positive refractive power
  • the third lens has a negative refractive power
  • the fourth lens has a positive refractive power
  • the fifth lens has a negative refractive power
  • the sixth lens has a negative refractive power
  • the seventh lens has a positive refractive power
  • the eighth lens has a positive refractive power
  • the ninth lens has a negative refractive power
  • the ninth lens has a negative refractive power
  • the focal length of the imaging optical lens is f
  • the focal length of the first lens is f1
  • the on-axis thickness of the eighth lens is d15
  • the image side of the eighth lens reaches the object of the ninth lens.
  • the on-axis distance on the side is d16 and satisfies the following relation:
  • the central radius of curvature of the object side surface of the ninth lens is R17
  • the central radius of curvature of the image side surface of the ninth lens is R18
  • the central radius of curvature of the object side of the first lens is R1
  • the central radius of curvature of the image side of the first lens is R2
  • the on-axis thickness of the first lens is d1
  • the optical The total length is TTL and satisfies the following relation:
  • the focal length of the second lens is f2
  • the central radius of curvature of the object side of the second lens is R3
  • the central radius of curvature of the image side of the second lens is R4
  • the on-axis thickness of the second lens is is d3
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the third lens is f3
  • the central radius of curvature of the object side of the third lens is R5
  • the central radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is is d5
  • the optical total length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the fourth lens is f4
  • the central radius of curvature of the object side of the fourth lens is R7
  • the central radius of curvature of the image side of the fourth lens is R8,
  • the on-axis thickness of the fourth lens is is d7
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the fifth lens is f5
  • the central radius of curvature of the object side of the fifth lens is R9
  • the central radius of curvature of the image side of the fifth lens is R10
  • the on-axis thickness of the fifth lens is is d9
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the sixth lens is f6, the central radius of curvature of the object side of the sixth lens is R11, the central radius of curvature of the image side of the sixth lens is R12, and the on-axis thickness of the sixth lens is is d11, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the seventh lens is f7
  • the central radius of curvature of the object side of the seventh lens is R13
  • the central radius of curvature of the image side of the seventh lens is R14
  • the on-axis thickness of the seventh lens is is d13
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the eighth lens is f8, the central radius of curvature of the object side of the eighth lens is R15, the central radius of curvature of the image side of the eighth lens is R16, and the total optical length of the imaging optical lens is TTL, and satisfy the following relation:
  • the focal length of the ninth lens is f9
  • the central radius of curvature of the object side of the ninth lens is R17
  • the central radius of curvature of the image side of the ninth lens is R18
  • the on-axis thickness of the ninth lens is is d17
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the imaging optical lens of the present invention has excellent optical properties, and has the characteristics of wide-angle and ultra-thinning, and is especially suitable for mobile phone camera lens assemblies composed of high-pixel CCD, CMOS and other imaging elements and WEB camera lens.
  • FIG. 1 is a schematic structural diagram of an imaging optical lens according to a first embodiment of the present invention
  • Fig. 2 is the axial aberration schematic diagram of the imaging optical lens shown in Fig. 1;
  • FIG. 3 is a schematic diagram of the magnification chromatic aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
  • FIG. 5 is a schematic structural diagram of an imaging optical lens according to a second embodiment of the present invention.
  • Fig. 6 is the axial aberration schematic diagram of the imaging optical lens shown in Fig. 5;
  • FIG. 7 is a schematic diagram of the magnification chromatic aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
  • FIG. 9 is a schematic structural diagram of an imaging optical lens according to a third embodiment of the present invention.
  • Fig. 10 is a schematic diagram of axial aberration of the imaging optical lens shown in Fig. 9;
  • FIG. 11 is a schematic diagram of the magnification chromatic aberration of the imaging optical lens shown in FIG. 9;
  • FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9 .
  • FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention, and the imaging optical lens 10 includes nine lenses.
  • the imaging optical lens 10 sequentially includes from the object side to the image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, Seventh lens L7, eighth lens L8, and ninth lens L9.
  • Optical elements such as an optical filter GF may be disposed between the ninth lens L9 and the image plane Si.
  • the first lens L1 has a negative refractive power
  • the second lens L2 has a positive refractive power
  • the third lens L3 has a negative refractive power
  • the fourth lens L4 has a positive refractive power
  • the fifth lens L5 has a negative refractive power
  • the sixth lens L6 has negative refractive power
  • the seventh lens L7 has positive refractive power
  • the eighth lens L8 has positive refractive power
  • the ninth lens L9 has negative refractive power.
  • the second lens L2 has a positive refractive power, which contributes to improving the performance of the optical system.
  • the first lens L1 is made of plastic material
  • the second lens L2 is made of plastic material
  • the third lens L3 is made of plastic material
  • the fourth lens L4 is made of plastic material
  • the fifth lens L5 is made of plastic material
  • the sixth lens L6 is made of plastic material
  • the seventh lens L7 is made of plastic
  • the eighth lens L8 is made of plastic
  • the ninth lens L9 is made of plastic.
  • each lens may also be made of other materials.
  • the focal length of the imaging optical lens 10 is defined as f
  • the focal length of the first lens L1 is defined as f1
  • the following relational expression is satisfied: -1.80 ⁇ f1/f ⁇ -0.70, which specifies the focal length of the first lens L1.
  • the ratio of the focal length f1 to the focal length f of the imaging optical lens 10 can effectively balance the spherical aberration and the field curvature of the imaging optical lens 10 within a range of conditions.
  • the on-axis thickness of the eighth lens L8 is defined as d15
  • the on-axis distance from the image side of the eighth lens L8 to the object side of the ninth lens L9 is d16
  • the following relationship is satisfied: 2.00 ⁇ d15/d16 ⁇ 12.00
  • the formula specifies the ratio of the on-axis thickness d15 of the eighth lens L8 to the on-axis distance d16 from the image side of the eighth lens L8 to the object side of the ninth lens L9. Within the range of conditions, it helps to compress the total length of the optical system and achieve ultra-thin effect.
  • the central radius of curvature of the object side of the ninth lens L9 is defined as R17, and the central radius of curvature of the image side of the ninth lens L9 is R18, and the following relationship is satisfied: -3.50 ⁇ R17/R18 ⁇ -1.50.
  • the shape of the ninth lens L9 is specified, and within the range of conditions, the degree of deflection of the light passing through the lens can be eased, and aberrations can be effectively reduced.
  • the object side surface of the first lens L1 is a convex surface at the paraxial position, and the image side surface thereof is a concave surface at the paraxial position.
  • the central radius of curvature of the object side of the first lens L1 as R1
  • the central radius of curvature of the image side of the first lens L1 as R2
  • the shape of the first lens L1 enables the first lens L1 to effectively correct the system spherical aberration.
  • 0.90 ⁇ (R1+R2)/(R1-R2) ⁇ 4.35 is satisfied.
  • the on-axis thickness of the first lens L1 is defined as d1, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.01 ⁇ d1/TTL ⁇ 0.06, within the range of conditions, it is beneficial to realize ultra-thinning. Preferably, 0.01 ⁇ d1/TTL ⁇ 0.05 is satisfied.
  • the object side surface of the second lens L2 is a convex surface at the paraxial position, and the image side surface thereof is a concave surface at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the second lens L2 is f2, which satisfies the following relationship: 0.24 ⁇ f2/f ⁇ 0.91.
  • 0.39 ⁇ f2/f ⁇ 0.73 is satisfied.
  • the central radius of curvature of the object side of the second lens L2 as R3, and the central radius of curvature of the image side of the second lens L2 as R4, which satisfies the following relationship: -2.19 ⁇ (R3+R4)/(R3-R4) ⁇ -0.48,
  • the shape of the second lens L2 is specified.
  • the shape is within the range, as the lens develops towards an ultra-thin and wide-angle lens, it is beneficial to correct the problem of axial chromatic aberration.
  • -1.37 ⁇ (R3+R4)/(R3-R4) ⁇ -0.60 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the axial thickness of the second lens L2 is d3, which satisfies the following relationship: 0.03 ⁇ d3/TTL ⁇ 0.16, within the range of conditions, it is beneficial to realize ultra-thinning.
  • 0.05 ⁇ d3/TTL ⁇ 0.13 is satisfied.
  • the object side surface of the third lens L3 is a convex surface at the paraxial position, and the image side surface thereof is a concave surface at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the third lens is defined as f3, which satisfies the following relationship: -5.98 ⁇ f3/f ⁇ -1.44, through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity.
  • -3.74 ⁇ f3/f ⁇ -1.80 is satisfied.
  • the central radius of curvature of the object side of the third lens L3 as R5
  • the central radius of curvature of the image side of the third lens L3 as R6, which satisfies the following relationship: 1.43 ⁇ (R5+R6)/(R5-R6) ⁇ 5.57, which specifies
  • the shape of the third lens L3, within the range specified by the relational expression can moderate the degree of deflection of the light passing through the lens, thereby effectively reducing aberrations.
  • 2.30 ⁇ (R5+R6)/(R5-R6) ⁇ 4.45 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the on-axis thickness of the third lens L3 is defined as d5, which satisfies the following relationship: 0.01 ⁇ d5/TTL ⁇ 0.04, within the range of conditions, it is beneficial to achieve ultra-thinning. Preferably, 0.01 ⁇ d5/TTL ⁇ 0.03 is satisfied.
  • the object side surface of the fourth lens L4 is a concave surface at the paraxial position, and the image side surface thereof is a convex surface at the paraxial position.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the fourth lens L4 is f4, which satisfies the following relationship: 1.06 ⁇ f4/f ⁇ 5.31.
  • the system has better imaging quality and better imaging quality. low sensitivity.
  • 1.70 ⁇ f4/f ⁇ 4.25 is satisfied.
  • the central radius of curvature of the object side of the fourth lens L4 as R7
  • the central radius of curvature of the image side of the fourth lens L4 as R8, which satisfies the following relationship: 0.05 ⁇ (R7+R8)/(R7-R8) ⁇ 3.87
  • the specified It is the shape of the fourth lens L4, and when it is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct problems such as aberration of the off-axis picture angle.
  • 0.08 ⁇ (R7+R8)/(R7-R8) ⁇ 3.09 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the on-axis thickness of the fourth lens L4 is defined as d7, which satisfies the following relationship: 0.01 ⁇ d7/TTL ⁇ 0.08, within the range of conditions, it is beneficial to realize ultra-thinning. Preferably, 0.02 ⁇ d7/TTL ⁇ 0.06 is satisfied.
  • the object side surface of the fifth lens L5 is concave at the paraxial position, and the image side surface thereof is concave at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the fifth lens L5 is defined as f5, which satisfies the following relationship: -5.01 ⁇ f5/f ⁇ -0.97
  • the limitation of the fifth lens L5 can effectively make the imaging optical lens 10
  • Light angles are flat, reducing tolerance sensitivity.
  • -3.13 ⁇ f5/f ⁇ -1.22 is satisfied.
  • the central radius of curvature of the object side of the fifth lens L5 as R9
  • the central radius of curvature of the image side of the fifth lens L5 as R10
  • the shape of the fifth lens L5 is specified, and when the shape is within the range, it is beneficial to correct problems such as aberration of the off-axis picture angle with the development of ultra-thin and wide-angle.
  • -0.27 ⁇ (R9+R10)/(R9-R10) ⁇ 0.25 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the axial thickness of the fifth lens L5 is defined as d9, which satisfies the following relational formula: 0.01 ⁇ d9/TTL ⁇ 0.07, within the range of the relational formula, it is beneficial to realize ultra-thinning.
  • 0.02 ⁇ d9/TTL ⁇ 0.05 is satisfied.
  • the object side surface of the sixth lens L6 is a convex surface at the paraxial position, and the image side surface thereof is a concave surface at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the sixth lens L6 is defined as f6, and the following relationship is satisfied: -63.50 ⁇ f6/f ⁇ -17.13, through the reasonable distribution of focal power, the system has better imaging quality and lower sensitivity.
  • -39.69 ⁇ f6/f ⁇ -21.42 is satisfied.
  • the central radius of curvature of the object side of the sixth lens L6 is defined as R11, and the central radius of curvature of the image side of the sixth lens L6 is R12, which satisfies the following relationship: 1.59 ⁇ (R11+R12)/(R11-R12) ⁇ 11.32, the specified It is the shape of the sixth lens L6, and within the range of conditions, with the development of ultra-thin and wide-angle, it is beneficial to correct problems such as aberration of the off-axis picture angle. Preferably, 2.54 ⁇ (R11+R12)/(R11-R12) ⁇ 9.06 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the on-axis thickness of the sixth lens L6 is defined as d11, which satisfies the following relationship: 0.05 ⁇ d11/TTL ⁇ 0.18, within the range of conditions, it is conducive to realizing ultra-thinning. Preferably, 0.08 ⁇ d11/TTL ⁇ 0.14 is satisfied.
  • the object side surface of the seventh lens L7 is a convex surface at the paraxial position, and the image side surface thereof is a concave surface at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the seventh lens L7 is defined as f7, which satisfies the following relationship: 0.48 ⁇ f7/f ⁇ 2.03. Best image quality and lower sensitivity. Preferably, 0.76 ⁇ f7/f ⁇ 1.62 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the axial thickness of the seventh lens L7 is defined as d13, which satisfies the following relation: 0.02 ⁇ d13/TTL ⁇ 0.09. Within the range of the relation, it is beneficial to realize ultra-thinning. Preferably, 0.04 ⁇ d13/TTL ⁇ 0.07 is satisfied.
  • the object side surface of the eighth lens L8 is a convex surface at the paraxial position, and the image side surface thereof is a concave surface at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the eighth lens L8 is defined as f8, which satisfies the following relationship: 0.46 ⁇ f8/f ⁇ 7.90, through the reasonable distribution of the optical power, the system has better imaging quality and better imaging quality. low sensitivity.
  • 0.74 ⁇ f8/f ⁇ 6.32 is satisfied.
  • the central radius of curvature of the object side of the eighth lens L8 is defined as R15, and the central radius of curvature of the image side of the eighth lens L8 is R16, which satisfies the following relationship: -6.50 ⁇ (R15+R16)/(R15-R16) ⁇ -0.31,
  • the shape of the eighth lens L8 is specified.
  • it is beneficial to correct problems such as aberration of the off-axis picture angle with the development of ultra-thin and wide-angle.
  • -4.06 ⁇ (R15+R16)/(R15-R16) ⁇ -0.39 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the axial thickness of the eighth lens L8 is defined as d15, which satisfies the following relationship: 0.06 ⁇ d15/TTL ⁇ 0.23, within the range of the relationship, it is beneficial to realize ultra-thinning. Preferably, 0.09 ⁇ d15/TTL ⁇ 0.18 is satisfied.
  • the object side surface of the ninth lens L9 is concave at the paraxial position, and the image side surface thereof is concave at the paraxial position.
  • the focal length of the imaging optical lens 10 is f
  • the focal length of the ninth lens L9 is defined as f9, which satisfies the following relationship: -1.60 ⁇ f9/f ⁇ -0.34, through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity.
  • -1.00 ⁇ f9/f ⁇ -0.43 is satisfied.
  • the central radius of curvature of the object side of the ninth lens L9 is defined as R17, and the central radius of curvature of the image side of the ninth lens L9 is R18, which satisfies the following relationship: 0.11 ⁇ (R17+R18)/(R17-R18) ⁇ 0.77, which specifies
  • 0.11 ⁇ (R17+R18)/(R17-R18) ⁇ 0.77 which specifies
  • 0.17 ⁇ (R17+R18)/(R17-R18) ⁇ 0.62 is satisfied.
  • the total optical length of the imaging optical lens 10 is TTL, and the on-axis thickness of the ninth lens L9 is defined as d17, which satisfies the following relation: 0.01 ⁇ d17/TTL ⁇ 0.08. Within the range of the relation, it is beneficial to realize ultra-thinning. Preferably, 0.02 ⁇ d17/TTL ⁇ 0.06 is satisfied.
  • the image height of the imaging optical lens 10 is IH
  • the total optical length of the imaging optical lens 10 is TTL
  • the following relational expression is satisfied: TTL/IH ⁇ 1.62, which is conducive to realizing ultra-thinning.
  • the FOV of the imaging optical lens 10 is greater than or equal to 81.00°, so as to achieve a large wide angle and the imaging performance of the imaging optical lens 10 is good.
  • the surface shapes of the object side surface and the image side surface of the ninth lens L9 can also be set to other concave and convex distributions.
  • the imaging optical lens 10 can meet the design requirements of wide-angle and ultra-thin design while having good optical performance; according to the characteristics of the imaging optical lens 10, the imaging optical lens 10 is especially suitable for Mobile phone camera lens assembly and WEB camera lens composed of camera elements such as CCD and CMOS.
  • the imaging optical lens 10 of the present invention will be described below by way of examples.
  • the symbols described in each example are as follows.
  • the unit of focal length, on-axis distance, center curvature radius, on-axis thickness, inflection point position, and stagnation point position is mm.
  • TTL total optical length (the on-axis distance from the object side of the first lens L1 to the image plane Si), in mm;
  • Aperture value FNO refers to the ratio of the effective focal length of the imaging optical lens to the diameter of the entrance pupil.
  • an inflection point and/or a stagnation point may also be set on the object side and/or the image side of the lens to meet high-quality imaging requirements.
  • an inflection point and/or a stagnation point may also be set on the object side and/or the image side of the lens to meet high-quality imaging requirements.
  • Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
  • R the radius of curvature at the center of the optical surface
  • R1 the central radius of curvature of the object side surface of the first lens L1;
  • R2 the central curvature radius of the image side surface of the first lens L1;
  • R3 the central radius of curvature of the object side surface of the second lens L2;
  • R4 the central curvature radius of the image side surface of the second lens L2;
  • R5 the central radius of curvature of the object side surface of the third lens L3;
  • R6 the central curvature radius of the image side surface of the third lens L3;
  • R7 the central curvature radius of the object side surface of the fourth lens L4;
  • R8 the central curvature radius of the image side surface of the fourth lens L4;
  • R9 the central curvature radius of the object side surface of the fifth lens L5;
  • R10 the central curvature radius of the image side surface of the fifth lens L5;
  • R11 the central curvature radius of the object side surface of the sixth lens L6;
  • R12 the central curvature radius of the image side surface of the sixth lens L6;
  • R13 the central curvature radius of the object side surface of the seventh lens L7;
  • R14 the central curvature radius of the image side surface of the seventh lens L7;
  • R15 the central curvature radius of the object side surface of the eighth lens L8;
  • R16 the central curvature radius of the image side surface of the eighth lens L8;
  • R17 the central curvature radius of the object side surface of the ninth lens L9;
  • R18 the central curvature radius of the image side surface of the ninth lens L9;
  • R19 the central curvature radius of the object side of the optical filter GF
  • R20 the central curvature radius of the image side of the optical filter GF
  • d the on-axis thickness of the lens, the on-axis distance between the lenses
  • d0 the on-axis distance from the aperture S1 to the object side surface of the first lens L1;
  • d2 the on-axis distance from the image side of the first lens L1 to the object side of the second lens L2;
  • d4 the on-axis distance from the image side of the second lens L2 to the object side of the third lens L3;
  • d6 the on-axis distance from the image side of the third lens L3 to the object side of the fourth lens L4;
  • d10 the on-axis distance from the image side of the fifth lens L5 to the object side of the sixth lens L6;
  • d11 the on-axis thickness of the sixth lens L6;
  • d12 the on-axis distance from the image side of the sixth lens L6 to the object side of the seventh lens L7;
  • d14 the on-axis distance from the image side of the seventh lens L7 to the object side of the eighth lens L8;
  • d16 the on-axis distance from the image side of the eighth lens L8 to the object side of the ninth lens L9;
  • d20 the on-axis distance from the image side of the optical filter GF to the image plane Si;
  • nd the refractive index of the d-line
  • nd1 the refractive index of the d-line of the first lens L1;
  • nd2 the refractive index of the d-line of the second lens L2;
  • nd3 the refractive index of the d-line of the third lens L3;
  • nd4 the refractive index of the d-line of the fourth lens L4;
  • nd5 the refractive index of the d-line of the fifth lens L5;
  • nd6 the refractive index of the d-line of the sixth lens L6;
  • nd7 the refractive index of the d-line of the seventh lens L7;
  • nd8 the refractive index of the d-line of the eighth lens L8;
  • nd9 the refractive index of the d-line of the ninth lens L9
  • ndg the refractive index of the d-line of the optical filter GF
  • vg Abbe number of optical filter GF.
  • Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
  • k is a conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspheric coefficients.
  • x is the vertical distance between the point on the aspheric curve and the optical axis
  • y is the depth of the aspheric surface (the vertical distance between the point on the aspheric surface whose distance is x from the optical axis and the tangent plane tangent to the vertex on the optical axis of the aspheric surface. ).
  • the aspherical surface shown in the above formula (1) is used as the aspherical surface of each lens surface.
  • the present invention is not limited to the aspheric polynomial form represented by the formula (1).
  • Table 3 and Table 4 show the design data of the inflection point and the stagnation point of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
  • P1R1 and P1R2 respectively represent the object side and image side of the first lens L1
  • P2R1 and P2R2 respectively represent the object side and image side of the second lens L2
  • P3R1 and P3R2 respectively represent the object side and the image side of the third lens L3
  • P4R1 and P4R2 represent the object side and image side of the fourth lens L4 respectively
  • P5R1 and P5R2 represent the object side and the image side of the fifth lens L5 respectively
  • P6R1 and P6R2 respectively represent the object side and the image side of the sixth lens L6,
  • P7R1, P7R2 respectively represent the object side and image side of the seventh lens L7
  • P8R1 and P8R2 respectively represent the object side and the image side of the eighth lens L8,
  • P9R1 and P9R2 respectively
  • the corresponding data in the column of “inflection point position” is the vertical distance from the inflection point set on the surface of each lens to the optical axis of the imaging optical lens 10 .
  • the corresponding data in the column of "stagnation point position” is the vertical distance from the stagnation point set on the surface of each lens to the optical axis of the imaging optical lens 10 .
  • FIG. 2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm and 436 nm passes through the imaging optical lens 10 of the first embodiment.
  • FIG. 4 shows a schematic diagram of the field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in FIG. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction. .
  • Table 13 shows the values corresponding to various numerical values in the first, second, and third embodiments and the parameters specified in the relational expressions.
  • the first embodiment satisfies each relational expression.
  • the entrance pupil diameter ENPD of the imaging optical lens 10 is 3.243 mm
  • the full field of view image height IH is 6.000 mm
  • the FOV in the diagonal direction is 85.11°.
  • the imaging optical lens 10 To meet the design requirements of wide-angle and ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.
  • FIG. 5 shows an imaging optical lens 20 according to a second embodiment of the present invention.
  • the second embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment, and only the differences are listed below.
  • the image side surface of the eighth lens L8 is convex at the paraxial position.
  • Tables 5 and 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 6 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • Tables 7 and 8 show the inflection point and stagnation point design data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • P6R1 2 0.745 1.995 P6R2 1 0.525 / P7R1 1 2.145 / P7R2 1 2.165 / P8R1 1 1.595 / P8R2 0 / / P9R1 0 / / P9R2 1 3.795 /
  • FIG. 6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm and 436 nm passes through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of the field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 20 of the second embodiment.
  • the field curvature S in FIG. 8 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction. .
  • the entrance pupil diameter ENPD of the imaging optical lens 20 is 3.215 mm
  • the full field of view image height IH is 6.000 mm
  • the field of view angle FOV in the diagonal direction is 85.30°.
  • the imaging optical lens 20 To meet the design requirements of wide-angle and ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.
  • FIG. 9 shows an imaging optical lens 30 according to a third embodiment of the present invention.
  • the third embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment, and only the differences are listed below.
  • the image side of the second lens L2 is convex at the paraxial
  • the object side of the fourth lens L4 is convex at the paraxial
  • the image side of the eighth lens L8 is convex at the paraxial.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 11 and Table 12 show the inflection point and stagnation point design data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm and 436 nm passes through the imaging optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of the field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 30 of the third embodiment.
  • the field curvature S in FIG. 12 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction. .
  • the entrance pupil diameter ENPD of the imaging optical lens 30 is 3.134 mm
  • the image height IH of the full field of view is 6.000 mm
  • the FOV in the diagonal direction is 81.82°.
  • the imaging optical lens 30 To meet the design requirements of wide-angle and ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 f1/f -1.79 -1.53 -0.73 d15/d16 2.00 11.74 4.00 f 6.487 6.430 6.895 f1 -11.638 -9.814 -5.043 f2 3.949 3.839 3.343 f3 -14.026 -14.625 -20.624 f4 22.972 18.439 14.618 f5 -16.257 -10.729 -10.061 f6 -166.721 -204.158 -195.845 f7 7.915 8.692 6.589 f8 34.147 5.968 7.238 f9 -5.183 -3.867 -3.550 f12 6.146 6.472 9.498 FNO 2.00 2.00 2.20 TTL 8.655 8.904 9.694 IH 6.000 6.000 6.000 FOV 85.11° 85.30° 81.82°

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Abstract

一种摄像光学镜头（10），涉及光学镜头领域，该摄像光学镜头（10）共包含九片透镜，该九片透镜自物侧至像侧依序为：第一透镜（L1）、第二透镜（L2）、第三透镜（L3）、第四透镜（L4）、第五透镜（L5）、第六透镜（L6）、第七透镜（L7）、第八透镜（L8）以及第九透镜（L9）；该第二透镜（L2）具有正屈折力；其中，该摄像光学镜头（10）的焦距为f，该第一透镜（L1）的焦距为f1，该第八透镜（L8）的轴上厚度为d15，该第八透镜（L8）的像侧面到该第九透镜（L9）的物侧面的轴上距离为d16，且满足下列关系式：-1.80≤f1/f≤-0.70；2.00≤d15/d16≤12.00。该摄像光学镜头（10）在具有良好光学性能的同时，还满足广角化、超薄化的设计要求。

Description

摄像光学镜头 技术领域
本发明涉及光学镜头领域，特别涉及一种适用于智能手机、数码相机等手提终端设备，以及监视器、PC镜头等摄像装置的摄像光学镜头。
背景技术
近年来，随着智能手机的兴起，小型化摄影镜头的需求日渐提高，而一般摄影镜头的感光器件不外乎是感光耦合器件(Charge Coupled Device,CCD)或互补性氧化金属半导体器件(Complementary Metal-Oxide Semiconductor Sensor,CMOS Sensor)两种，且由于半导体制造工艺技术的精进，使得感光器件的像素尺寸缩小，再加上现今电子产品以功能佳且轻薄短小的外型为发展趋势，因此，具备良好成像品质的小型化摄像镜头俨然成为目前市场上的主流。
为获得较佳的成像品质，传统搭载于手机相机的镜头多采用三片式、四片式甚至是五片式、六片式透镜结构。然而，随着技术的发展以及用户多样化需求的增多，在感光器件的像素面积不断缩小，且系统对成像品质的要求不断提高的情况下，九片式透镜结构逐渐出现在镜头设计当中，常见的九片式透镜虽然已经具有较好的光学性能，但是其光焦度、透镜间距和透镜形状设置仍然具有一定的不合理性，导致透镜结构在具有良好光学性能的同时，无法满足超薄化、广角化的设计要求。
发明内容
针对上述问题，本发明的目的在于提供一种摄像光学镜头，其具有良好光学性能的同时，满足超薄化、广角化的设计要求。
为解决上述技术问题，本发明的实施方式提供了一种摄像光学镜头，所述摄像光学镜头共包含九片透镜，所述九片透镜自物侧至像侧依序为：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜、第八透镜以及第九透镜；所述第一透镜具有负屈折力，所述第二透镜具有正屈折力，所述第三透镜具有负屈折力，所述第四透镜具有正屈折力，所述第五透镜具有负屈折力，所述第六透镜具有负屈折力，所述第七透镜具有正屈折力，所述第八透镜具有正屈折力，所述第九透镜具有负屈折力；
其中，所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第八透镜的轴上厚度为d15，所述第八透镜的像侧面到所述第九透镜的物侧面的轴上距离为d16，且满足下列关系式：
-1.80≤f1/f≤-0.70；
2.00≤d15/d16≤12.00。
优选地，所述第九透镜物侧面的中心曲率半径为R17，所述第九透镜像侧面的中心曲率半径为R18，且满足下列关系式：
-3.50≤R17/R18≤-1.50。
优选地，所述第一透镜物侧面的中心曲率半径为R1，所述第一透镜像侧面的中心曲率半径为R2，所述第一透镜的轴上厚度为d1，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
0.56≤(R1+R2)/(R1-R2)≤5.43；
0.01≤d1/TTL≤0.06。
优选地，所述第二透镜的焦距为f2，所述第二透镜物侧面的中心曲率半径为R3，所述第二透镜像侧面的中心曲率半径为R4，所述第二透镜的轴上厚度为d3，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
0.24≤f2/f≤0.91；
-2.19≤(R3+R4)/(R3-R4)≤-0.48；
0.03≤d3/TTL≤0.16。
优选地，所述第三透镜的焦距为f3，所述第三透镜物侧面的中心曲率半径为R5，所述第三透镜像侧面的中心曲率半径为R6，所述第三透镜的轴上厚度为d5，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
-5.98≤f3/f≤-1.44；
1.43≤(R5+R6)/(R5-R6)≤5.57；
0.01≤d5/TTL≤0.04。
优选地，所述第四透镜的焦距为f4，所述第四透镜物侧面的中心曲率半径为R7，所述第四透镜像侧面的中心曲率半径为R8，所述第四透镜的轴上厚度为d7，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
1.06≤f4/f≤5.31；
0.05≤(R7+R8)/(R7-R8)≤3.87；
0.01≤d7/TTL≤0.08。
优选地，所述第五透镜的焦距为f5，所述第五透镜物侧面的中心曲率半径为R9，所述第五透镜像侧面的中心曲率半径为R10，所述第五透镜的轴上厚度为d9，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
-5.01≤f5/f≤-0.97；
-0.43≤(R9+R10)/(R9-R10)≤0.31；
0.01≤d9/TTL≤0.07。
优选地，所述第六透镜的焦距为f6，所述第六透镜物侧面的中心曲率半径为R11，所述第六透镜像侧面的中心曲率半径为R12，所述第 六透镜的轴上厚度为d11，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
-63.50≤f6/f≤-17.13；
1.59≤(R11+R12)/(R11-R12)≤11.32；
0.05≤d11/TTL≤0.18。
优选地，所述第七透镜的焦距为f7，所述第七透镜物侧面的中心曲率半径为R13，所述第七透镜像侧面的中心曲率半径为R14，所述第七透镜的轴上厚度为d13，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
0.48≤f7/f≤2.03；
-3.44≤(R13+R14)/(R13-R14)≤-0.96；
0.02≤d13/TTL≤0.09。
优选地，所述第八透镜的焦距为f8，所述第八透镜物侧面的中心曲率半径为R15，所述第八透镜像侧面的中心曲率半径为R16，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
0.46≤f8/f≤7.90；
-6.50≤(R15+R16)/(R15-R16)≤-0.31；
0.06≤d15/TTL≤0.23。
优选地，所述第九透镜的焦距为f9，所述第九透镜物侧面的中心曲率半径为R17，所述第九透镜像侧面的中心曲率半径为R18，所述第九透镜的轴上厚度为d17，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
-1.60≤f9/f≤-0.34；
0.11≤(R17+R18)/(R17-R18)≤0.77；
0.01≤d17/TTL≤0.08。
本发明的有益效果在于：本发明的摄像光学镜头具有优秀的光学特性，且具有广角化、超薄化的特性，尤其适用于由高像素用的CCD、CMOS等摄像元件构成的手机摄像镜头组件和WEB摄像镜头。
附图说明
为了更清楚地说明本发明实施方式中的技术方案，下面将对实施方式描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1是本发明第一实施方式的摄像光学镜头的结构示意图；
图2是图1所示摄像光学镜头的轴向像差示意图；
图3是图1所示摄像光学镜头的倍率色差示意图；
图4是图1所示摄像光学镜头的场曲及畸变示意图；
图5是本发明第二实施方式的摄像光学镜头的结构示意图；
图6是图5所示摄像光学镜头的轴向像差示意图；
图7是图5所示摄像光学镜头的倍率色差示意图；
图8是图5所示摄像光学镜头的场曲及畸变示意图；
图9是本发明第三实施方式的摄像光学镜头的结构示意图；
图10是图9所示摄像光学镜头的轴向像差示意图；
图11是图9所示摄像光学镜头的倍率色差示意图；
图12是图9所示摄像光学镜头的场曲及畸变示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好地理解本发明而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本发明所要求保护的技术方案。
(第一实施方式)
参考附图，本发明提供了一种摄像光学镜头10。图1所示为本发明第一实施方式的摄像光学镜头10，该摄像光学镜头10包括九个透镜。具体的，摄像光学镜头10由物侧至像侧依序包括：光圈S1、第一透镜L1、第二透镜L2、第三透镜L3、第四透镜L4、第五透镜L5、第六透镜L6、第七透镜L7、第八透镜L8以及第九透镜L9。第九透镜L9和像面Si之间可设置有光学过滤片(filter)GF等光学元件。
在本实施方式中，第一透镜L1具有负屈折力，第二透镜L2具有正屈折力，第三透镜L3具有负屈折力，第四透镜L4具有正屈折力，第五透镜L5具有负屈折力，第六透镜L6具有负屈折力，第七透镜L7具有正屈折力，第八透镜L8具有正屈折力，第九透镜L9具有负屈折力。在本实施方式中，第二透镜L2具有正屈折力，有助于提高光学系统性能。
在本实施方式中，第一透镜L1为塑料材质，第二透镜L2为塑料材质，第三透镜L3为塑料材质，第四透镜L4为塑料材质，第五透镜L5为塑料材质，第六透镜L6为塑料材质，第七透镜L7为塑料材质，第八透镜L8为塑料材质，第九透镜L9为塑料材质。在其他实施例中，各透镜也可以是其他材质。
在本实施方式中，定义摄像光学镜头10的焦距为f，第一透镜L1的焦距为f1，满足下列关系式：-1.80≤f1/f≤-0.70，该关系式规定了第一透镜L1的焦距f1与摄像光学镜头10的焦距f的比值，在条件范围内，可以有效地平衡摄像光学镜头10的球差以及场曲量。
定义第八透镜L8的轴上厚度为d15，第八透镜L8的像侧面到第九透镜L9的物侧面的轴上距离为d16，且满足下列关系式：2.00≤d15/d16≤12.00，该关系式规定了第八透镜L8的轴上厚度d15与第八 透镜L8像侧面至第九透镜L9物侧面的轴上距离d16的比值，在条件范围内，有助于压缩光学系统总长，实现超薄化效果。
定义第九透镜L9物侧面的中心曲率半径为R17，第九透镜L9像侧面的中心曲率半径为R18，且满足下列关系式：-3.50≤R17/R18≤-1.50。规定了第九透镜L9的形状，在条件范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。
本实施方式中，第一透镜L1的物侧面于近轴处为凸面，其像侧面于近轴处为凹面。
定义第一透镜L1物侧面的中心曲率半径为R1，第一透镜L1像侧面的中心曲率半径为R2，满足下列关系式：0.56≤(R1+R2)/(R1-R2)≤5.43，合理控制第一透镜L1的形状，使得第一透镜L1能够有效地校正系统球差。优选地，满足0.90≤(R1+R2)/(R1-R2)≤4.35。
定义第一透镜L1的轴上厚度为d1，摄像光学镜头10的光学总长为TTL，满足下列关系式：0.01≤d1/TTL≤0.06，在条件范围内，有利于实现超薄化。优选地，满足0.01≤d1/TTL≤0.05。
本实施方式中，第二透镜L2的物侧面于近轴处为凸面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，第二透镜L2的焦距为f2，满足下列关系式：0.24≤f2/f≤0.91，通过将第二透镜L2的光焦度控制在合理范围，有利于矫正光学系统的像差。优选地，满足0.39≤f2/f≤0.73。
定义第二透镜L2物侧面的中心曲率半径为R3，第二透镜L2像侧面的中心曲率半径为R4，满足下列关系式：-2.19≤(R3+R4)/(R3-R4)≤-0.48，规定了第二透镜L2的形状，在范围内时，随着镜头向超薄广角化发展，有利于补正轴上色像差问题。优选地，满足-1.37≤(R3+R4)/(R3-R4)≤-0.60。
摄像光学镜头10的光学总长为TTL，第二透镜L2的轴上厚度为d3，满足下列关系式：0.03≤d3/TTL≤0.16，在条件范围内，有利于实现超薄化。优选地，满足0.05≤d3/TTL≤0.13。
本实施方式中，第三透镜L3的物侧面于近轴处为凸面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，定义第三透镜的焦距为f3，满足下列关系式：-5.98≤f3/f≤-1.44，通过光焦度的合理分配，使得系统具有较佳的成像品质和较低的敏感性。优选地，满足-3.74≤f3/f≤-1.80。
定义第三透镜L3物侧面的中心曲率半径为R5，第三透镜L3像侧面的中心曲率半径为R6，满足下列关系式：1.43≤(R5+R6)/(R5-R6)≤5.57，规定了第三透镜L3的形状，在关系式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。优选地，满足2.30≤(R5+R6)/(R5-R6)≤4.45。
摄像光学镜头10的光学总长为TTL，定义第三透镜L3的轴上厚 度为d5，满足下列关系式：0.01≤d5/TTL≤0.04，在条件范围内，有利于实现超薄化。优选地，满足0.01≤d5/TTL≤0.03。
本实施方式中，第四透镜L4的物侧面于近轴处为凹面，其像侧面于近轴处为凸面。
定义摄像光学镜头10的焦距为f，第四透镜L4的焦距为f4，满足下列关系式：1.06≤f4/f≤5.31，通过光焦度的合理分配，使得系统具有较佳的成像品质和较低的敏感性。优选地，满足1.70≤f4/f≤4.25。
定义第四透镜L4物侧面的中心曲率半径为R7，第四透镜L4像侧面的中心曲率半径为R8，满足下列关系式：0.05≤(R7+R8)/(R7-R8)≤3.87，规定的是第四透镜L4的形状，在范围内时，随着超薄广角化的发展，有利于补正轴外画角的像差等问题。优选地，满足0.08≤(R7+R8)/(R7-R8)≤3.09。
摄像光学镜头10的光学总长为TTL，定义第四透镜L4的轴上厚度为d7，满足下列关系式：0.01≤d7/TTL≤0.08，在条件范围内，有利于实现超薄化。优选地，满足0.02≤d7/TTL≤0.06。
本实施方式中，第五透镜L5的物侧面于近轴处为凹面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，定义第五透镜L5的焦距为f5，满足下列关系式：-5.01≤f5/f≤-0.97，对第五透镜L5的限定可有效的使得摄像光学镜头10的光线角度平缓，降低公差敏感度。优选地，满足-3.13≤f5/f≤-1.22。
定义第五透镜L5物侧面的中心曲率半径为R9，第五透镜L5像侧面的中心曲率半径为R10，且满足下列关系式：-0.43≤(R9+R10)/(R9-R10)≤0.31，规定了第五透镜L5的形状，在范围内时，随着超薄广角化的发展，有利于补正轴外画角的像差等问题。优选地，满足-0.27≤(R9+R10)/(R9-R10)≤0.25。
摄像光学镜头10的光学总长为TTL，定义第五透镜L5的轴上厚度为d9，满足下列关系式：0.01≤d9/TTL≤0.07，在关系式范围内，有利于实现超薄化。优选地，满足0.02≤d9/TTL≤0.05。
本实施方式中，第六透镜L6的物侧面于近轴处为凸面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，定义第六透镜L6的焦距为f6，且满足下列关系式：-63.50≤f6/f≤-17.13，通过光焦度的合理分配，使得系统具有较佳的成像品质和较低的敏感性。优选地，满足-39.69≤f6/f≤-21.42。
定义第六透镜L6物侧面的中心曲率半径为R11，第六透镜L6像侧面的中心曲率半径为R12，满足下列关系式：1.59≤(R11+R12)/(R11-R12)≤11.32，规定的是第六透镜L6的形状，在条件范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。 优选地，满足2.54≤(R11+R12)/(R11-R12)≤9.06。
摄像光学镜头10的光学总长为TTL，定义第六透镜L6的轴上厚度为d11，满足下列关系式：0.05≤d11/TTL≤0.18，在条件范围内，有利于实现超薄化。优选地，满足0.08≤d11/TTL≤0.14。
本实施方式中，所述第七透镜L7的物侧面于近轴处为凸面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，定义第七透镜L7的焦距为f7，满足下列关系式：0.48≤f7/f≤2.03，在关系式范围内，通过光焦度的合理分配，使得系统具有较佳的成像品质和较低的敏感性。优选地，满足0.76≤f7/f≤1.62。
定义第七透镜L7物侧面的中心曲率半径为R13，第七透镜L7像侧面的中心曲率半径为R14，且满足下列关系式：-3.44≤(R13+R14)/(R13-R14)≤-0.96，规定了第七透镜L7的形状，在关系式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。优选地，满足-2.15≤(R13+R14)/(R13-R14)≤-1.20。
摄像光学镜头10的光学总长为TTL，定义第七透镜L7的轴上厚度为d13，满足下列关系式：0.02≤d13/TTL≤0.09，在关系式范围内，有利于实现超薄化。优选地，满足0.04≤d13/TTL≤0.07。
本实施方式中，第八透镜L8的物侧面于近轴处为凸面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，定义第八透镜L8的焦距为f8，满足下列关系式：0.46≤f8/f≤7.90，通过光焦度的合理分配，使得系统具有较佳的成像品质和较低的敏感性。优选地，满足0.74≤f8/f≤6.32。
定义第八透镜L8物侧面的中心曲率半径为R15，第八透镜L8像侧面的中心曲率半径为R16，满足下列关系式：-6.50≤(R15+R16)/(R15-R16)≤-0.31，规定了第八透镜L8的形状，在条件范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。优选地，满足-4.06≤(R15+R16)/(R15-R16)≤-0.39。
摄像光学镜头10的光学总长为TTL，定义第八透镜L8的轴上厚度为d15，满足下列关系式：0.06≤d15/TTL≤0.23，在关系式范围内，有利于实现超薄化。优选地，满足0.09≤d15/TTL≤0.18。
本实施方式中，第九透镜L9的物侧面于近轴处为凹面，其像侧面于近轴处为凹面。
摄像光学镜头10的焦距为f，定义第九透镜L9的焦距为f9，满足下列关系式：-1.60≤f9/f≤-0.34，通过光焦度的合理分配，使得系统具有较佳的成像品质和较低的敏感性。优选地，满足-1.00≤f9/f≤-0.43。
定义第九透镜L9物侧面的中心曲率半径为R17，第九透镜L9像侧面的中心曲率半径为R18，满足下列关系式：0.11≤ (R17+R18)/(R17-R18)≤0.77，规定了第九透镜L9的形状，在条件范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。优选地，满足0.17≤(R17+R18)/(R17-R18)≤0.62。
摄像光学镜头10的光学总长为TTL，定义第九透镜L9的轴上厚度为d17，满足下列关系式：0.01≤d17/TTL≤0.08，在关系式范围内，有利于实现超薄化。优选地，满足0.02≤d17/TTL≤0.06。
本实施方式中，摄像光学镜头10的像高为IH，摄像光学镜头10的光学总长为TTL，且满足下列关系式：TTL/IH≤1.62，从而有利于实现超薄化。
本实施方式中，摄像光学镜头10视场角FOV大于或等于81.00°，从而实现大广角，摄像光学镜头10成像性能好。
可以理解的是，在其他实施方式中，第一透镜L1、第二透镜L2、第三透镜L3、第四透镜L4、第五透镜L5、第六透镜L6、第七透镜L7、第八透镜L8及第九透镜L9的物侧面和像侧面的面型也可设置为其他凹、凸分布情况。
当满足上述关系时，使得摄像光学镜头10具有良好光学性能的同时，能够满足广角化、超薄化的设计要求；根据该摄像光学镜头10的特性，该摄像光学镜头10尤其适用于由高像素用的CCD、CMOS等摄像元件构成的手机摄像镜头组件和WEB摄像镜头。
下面将用实例进行说明本发明的摄像光学镜头10。各实例中所记载的符号如下所示。焦距、轴上距离、中心曲率半径、轴上厚度、反曲点位置、驻点位置的单位为mm。
TTL：光学总长(第一透镜L1的物侧面到像面Si的轴上距离)，单位为mm；
光圈值FNO：是指摄像光学镜头的有效焦距和入瞳直径的比值。
优选的，所述透镜的物侧面和/或像侧面上还可以设置有反曲点和/或驻点，以满足高品质的成像需求，具体的可实施方案，参下所述。
表1、表2示出本发明第一实施方式的摄像光学镜头10的设计数据。
【表1】
Figure PCTCN2020125992-appb-000001
Figure PCTCN2020125992-appb-000002
其中，各符号的含义如下。
S1：光圈；
R：光学面中心处的曲率半径；
R1：第一透镜L1的物侧面的中心曲率半径；
R2：第一透镜L1的像侧面的中心曲率半径；
R3：第二透镜L2的物侧面的中心曲率半径；
R4：第二透镜L2的像侧面的中心曲率半径；
R5：第三透镜L3的物侧面的中心曲率半径；
R6：第三透镜L3的像侧面的中心曲率半径；
R7：第四透镜L4的物侧面的中心曲率半径；
R8：第四透镜L4的像侧面的中心曲率半径；
R9：第五透镜L5的物侧面的中心曲率半径；
R10：第五透镜L5的像侧面的中心曲率半径；
R11：第六透镜L6的物侧面的中心曲率半径；
R12：第六透镜L6的像侧面的中心曲率半径；
R13：第七透镜L7的物侧面的中心曲率半径；
R14：第七透镜L7的像侧面的中心曲率半径；
R15：第八透镜L8的物侧面的中心曲率半径；
R16：第八透镜L8的像侧面的中心曲率半径；
R17：第九透镜L9的物侧面的中心曲率半径；
R18：第九透镜L9的像侧面的中心曲率半径；
R19：光学过滤片GF的物侧面的中心曲率半径；
R20：光学过滤片GF的像侧面的中心曲率半径；
d：透镜的轴上厚度、透镜之间的轴上距离；
d0：光圈S1到第一透镜L1的物侧面的轴上距离；
d1：第一透镜L1的轴上厚度；
d2：第一透镜L1的像侧面到第二透镜L2的物侧面的轴上距离；
d3：第二透镜L2的轴上厚度；
d4：第二透镜L2的像侧面到第三透镜L3的物侧面的轴上距离；
d5：第三透镜L3的轴上厚度；
d6：第三透镜L3的像侧面到第四透镜L4的物侧面的轴上距离；
d7：第四透镜L4的轴上厚度；
d8：第四透镜L4的像侧面到第五透镜L5的物侧面的轴上距离；
d9：第五透镜L5的轴上厚度；
d10：第五透镜L5的像侧面到第六透镜L6的物侧面的轴上距离；
d11：第六透镜L6的轴上厚度；
d12：第六透镜L6的像侧面到第七透镜L7的物侧面的轴上距离；
d13：第七透镜L7的轴上厚度；
d14：第七透镜L7的像侧面到第八透镜L8的物侧面的轴上距离；
d15：第八透镜L8的轴上厚度；
d16：第八透镜L8的像侧面到第九透镜L9的物侧面的轴上距离；
d17：第九透镜L9的轴上厚度；
d18：第九透镜L9的像侧面到光学过滤片GF的物侧面的轴上距离；
d19：光学过滤片GF的轴上厚度；
d20：光学过滤片GF的像侧面到像面Si的轴上距离；
nd：d线的折射率；
nd1：第一透镜L1的d线的折射率；
nd2：第二透镜L2的d线的折射率；
nd3：第三透镜L3的d线的折射率；
nd4：第四透镜L4的d线的折射率；
nd5：第五透镜L5的d线的折射率；
nd6：第六透镜L6的d线的折射率；
nd7：第七透镜L7的d线的折射率；
nd8：第八透镜L8的d线的折射率；
nd9：第九透镜L9的d线的折射率；
ndg：光学过滤片GF的d线的折射率；
vd：阿贝数；
v1：第一透镜L1的阿贝数；
v2：第二透镜L2的阿贝数；
v3：第三透镜L3的阿贝数；
v4：第四透镜L4的阿贝数；
v5：第五透镜L5的阿贝数；
v6：第六透镜L6的阿贝数；
v7：第七透镜L7的阿贝数；
v8：第八透镜L8的阿贝数；
v9：第九透镜L9的阿贝数；
vg：光学过滤片GF的阿贝数。
表2示出本发明第一实施方式的摄像光学镜头10中各透镜的非球面数据。
【表2】
Figure PCTCN2020125992-appb-000003
其中，k是圆锥系数，A4、A6、A8、A10、A12、A14、A16、A18、 A20是非球面系数。
y＝(x 2/R)/{1+[1-(k+1)(x 2/R 2)] 1/2}+A4x 4+A6x 6+A8x 8+A10x 10+A12x 12+A14x 14+A16x 16+A18x 18+A20x 20          (1)
其中，x是非球面曲线上的点与光轴的垂直距离，y是非球面深度(非球面上距离光轴为x的点，与相切于非球面光轴上顶点的切面两者间的垂直距离)。
为方便起见，各个透镜面的非球面使用上述公式(1)中所示的非球面。但是，本发明不限于该公式(1)表示的非球面多项式形式。
表3、表4示出本发明第一实施方式的摄像光学镜头10中各透镜的反曲点以及驻点设计数据。其中，P1R1、P1R2分别代表第一透镜L1的物侧面和像侧面，P2R1、P2R2分别代表第二透镜L2的物侧面和像侧面，P3R1、P3R2分别代表第三透镜L3的物侧面和像侧面，P4R1、P4R2分别代表第四透镜L4的物侧面和像侧面，P5R1、P5R2分别代表第五透镜L5的物侧面和像侧面，P6R1、P6R2分别代表第六透镜L6的物侧面和像侧面，P7R1、P7R2分别代表第七透镜L7的物侧面和像侧面，P8R1、P8R2分别代表第八透镜L8的物侧面和像侧面，P9R1、P9R2分别代表第九透镜L9的物侧面和像侧面。“反曲点位置”栏位对应数据为各透镜表面所设置的反曲点到摄像光学镜头10光轴的垂直距离。“驻点位置”栏位对应数据为各透镜表面所设置的驻点到摄像光学镜头10光轴的垂直距离。
【表3】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3
P1R1 0 / / /
P1R2 0 / / /
P2R1 0 / / /
P2R2 2 1.195 1.695 /
P3R1 0 / / /
P3R2 0 / / /
P4R1 0 / / /
P4R2 2 1.625 1.795 /
P5R1 2 1.755 1.855 /
P5R2 2 0.355 1.805 /
P6R1 2 0.255 1.725 /
P6R2 2 0.225 2.295 /
P7R1 1 1.405 / /
P7R2 2 1.555 3.075 /
P8R1 2 0.665 3.225 /
P8R2 2 0.625 3.305 /
P9R1 2 2.585 4.735 /
P9R2 3 0.985 4.895 5.135
【表4】
  驻点个数 驻点位置1 驻点位置2
P1R1 0 / /
P1R2 0 / /
P2R1 0 / /
P2R2 1 1.565 /
P3R1 0 / /
P3R2 0 / /
P4R1 0 / /
P4R2 0 / /
P5R1 0 / /
P5R2 1 0.605 /
P6R1 2 0.445 2.225
P6R2 1 0.385 /
P7R1 1 2.145 /
P7R2 1 2.145 /
P8R1 1 1.135 /
P8R2 1 1.035 /
P9R1 2 4.625 4.835
P9R2 1 2.285 /
图2、图3分别示出了波长为656nm、587nm、546nm、486nm及436nm的光经过第一实施方式的摄像光学镜头10后的轴向像差以及倍率色差示意图。图4则示出了波长为546nm的光经过第一实施方式的摄像光学镜头10后的场曲及畸变示意图，图4的场曲S是弧矢方向的场曲，T是子午方向的场曲。
后出现的表13示出各实施方式一、二、三中各种数值与关系式中已规定的参数所对应的值。
如表13所示，第一实施方式满足各关系式。
在本实施方式中，所述摄像光学镜头10的入瞳直径ENPD为3.243mm，全视场像高IH为6.000mm，对角线方向的视场角FOV为85.11°，所述摄像光学镜头10满足广角化、超薄化的设计要求，其轴上、轴外色像差被充分补正，且具有优秀的光学特征。
(第二实施方式)
图5所示为本发明第二实施方式的摄像光学镜头20，第二实施方式与第一实施方式基本相同，符号含义与第一实施方式相同，以下仅列出不同点。
第八透镜L8的像侧面于近轴处为凸面。
表5、表6示出本发明第二实施方式的摄像光学镜头20的设计数据。
【表5】
Figure PCTCN2020125992-appb-000004
Figure PCTCN2020125992-appb-000005
表6示出本发明第二实施方式的摄像光学镜头20中各透镜的非球面数据。
【表6】
Figure PCTCN2020125992-appb-000006
Figure PCTCN2020125992-appb-000007
表7、表8示出本发明第二实施方式的摄像光学镜头20中各透镜的反曲点以及驻点设计数据。
【表7】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3
P1R1 0 / / /
P1R2 0 / / /
P2R1 0 / / /
P2R2 2 1.115 1.695 /
P3R1 0 / / /
P3R2 0 / / /
P4R1 1 1.525 / /
P4R2 1 1.545 / /
P5R1 0 / / /
P5R2 2 0.485 1.805 /
P6R1 2 0.425 1.635 /
P6R2 2 0.295 2.185 /
P7R1 1 1.405 / /
P7R2 2 1.545 3.075 /
P8R1 2 0.915 3.225 /
P8R2 1 3.385 / /
P9R1 1 2.575 / /
P9R2 3 1.355 4.915 5.115
【表8】
  驻点个数 驻点位置1 驻点位置2
P1R1 0 / /
P1R2 0 / /
P2R1 0 / /
P2R2 1 1.475 /
P3R1 0 / /
P3R2 0 / /
P4R1 0 / /
P4R2 0 / /
P5R1 0 / /
P5R2 1 0.855 /
P6R1 2 0.745 1.995
P6R2 1 0.525 /
P7R1 1 2.145 /
P7R2 1 2.165 /
P8R1 1 1.595 /
P8R2 0 / /
P9R1 0 / /
P9R2 1 3.795 /
图6、图7分别示出了波长为656nm、587nm、546nm、486nm及436nm的光经过第二实施方式的摄像光学镜头20后的轴向像差以及倍率色差示意图。图8则示出了波长为546nm的光经过第二实施方式的摄像光学镜头20后的场曲及畸变示意图，图8的场曲S是弧矢方向的场曲，T是子午方向的场曲。
如表13所示，第二实施方式满足各关系式。
在本实施方式中，所述摄像光学镜头20的入瞳直径ENPD为3.215mm，全视场像高IH为6.000mm，对角线方向的视场角FOV为85.30°，所述摄像光学镜头20满足广角化、超薄化的设计要求，其轴上、轴外色像差被充分补正，且具有优秀的光学特征。
(第三实施方式)
图9所示为本发明第三实施方式的摄像光学镜头30，第三实施方式与第一实施方式基本相同，符号含义与第一实施方式相同，以下仅列出不同点。
第二透镜L2的像侧面于近轴处为凸面，第四透镜L4的物侧面于近轴处为凸面，第八透镜L8的像侧面于近轴处为凸面。
表9、表10示出本发明第三实施方式的摄像光学镜头30的设计数据。
【表9】
Figure PCTCN2020125992-appb-000008
Figure PCTCN2020125992-appb-000009
表10示出本发明第三实施方式的摄像光学镜头30中各透镜的非球面数据。
【表10】
Figure PCTCN2020125992-appb-000010
Figure PCTCN2020125992-appb-000011
表11、表12示出本发明第三实施方式的摄像光学镜头30中各透镜的反曲点以及驻点设计数据。
【表11】
  反曲点个数 反曲点位置1 反曲点位置2
P1R1 1 0.725 /
P1R2 0 / /
P2R1 1 1.565 /
P2R2 1 1.695 /
P3R1 0 / /
P3R2 0 / /
P4R1 2 0.545 1.475
P4R2 1 1.505 /
P5R1 0 / /
P5R2 2 0.505 1.805
P6R1 2 0.395 1.665
P6R2 2 0.285 2.245
P7R1 1 1.435 /
P7R2 2 1.555 3.075
P8R1 2 0.835 3.225
P8R2 1 3.385 /
P9R1 1 2.585 /
P9R2 2 1.275 4.915
【表12】
  驻点个数 驻点位置1 驻点位置2
P1R1 0 / /
P1R2 0 / /
P2R1 0 / /
P2R2 0 / /
P3R1 0 / /
P3R2 0 / /
P4R1 2 0.885 1.675
P4R2 0 / /
P5R1 0 / /
P5R2 1 0.885 /
P6R1 2 0.695 2.075
P6R2 1 0.495 /
P7R1 1 2.205 /
P7R2 1 2.155 /
P8R1 1 1.455 /
P8R2 0 / /
P9R1 0 / /
P9R2 1 3.655 /
图10、图11分别示出了波长为656nm、587nm、546nm、486nm及436nm的光经过第三实施方式的摄像光学镜头30后的轴向像差以及 倍率色差示意图。图12则示出了波长为546nm的光经过第三实施方式的摄像光学镜头30后的场曲及畸变示意图，图12的场曲S是弧矢方向的场曲，T是子午方向的场曲。
以下表13按照上述关系式列出了本实施方式中对应各关系式的数值。显然，本实施方式的摄像光学镜头30满足上述的关系式。
在本实施方式中，所述摄像光学镜头30的入瞳直径ENPD为3.134mm，全视场像高IH为6.000mm，对角线方向的视场角FOV为81.82°，所述摄像光学镜头30满足广角化、超薄化的设计要求，其轴上、轴外色像差被充分补正，且具有优秀的光学特征。
【表13】
参数及关系式 实施例1 实施例2 实施例3
f1/f -1.79 -1.53 -0.73
d15/d16 2.00 11.74 4.00
f 6.487 6.430 6.895
f1 -11.638 -9.814 -5.043
f2 3.949 3.839 3.343
f3 -14.026 -14.625 -20.624
f4 22.972 18.439 14.618
f5 -16.257 -10.729 -10.061
f6 -166.721 -204.158 -195.845
f7 7.915 8.692 6.589
f8 34.147 5.968 7.238
f9 -5.183 -3.867 -3.550
f12 6.146 6.472 9.498
FNO 2.00 2.00 2.20
TTL 8.655 8.904 9.694
IH 6.000 6.000 6.000
FOV 85.11° 85.30° 81.82°
本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施方式，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。

Claims (11)

  1. 一种摄像光学镜头，其特征在于，所述摄像光学镜头共包含九片透镜，所述九片透镜自物侧至像侧依序为：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜、第八透镜以及第九透镜；所述第一透镜具有负屈折力，所述第二透镜具有正屈折力，所述第三透镜具有负屈折力，所述第四透镜具有正屈折力，所述第五透镜具有负屈折力，所述第六透镜具有负屈折力，所述第七透镜具有正屈折力，所述第八透镜具有正屈折力，所述第九透镜具有负屈折力；
    其中，所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第八透镜的轴上厚度为d15，所述第八透镜的像侧面到所述第九透镜的物侧面的轴上距离为d16，且满足下列关系式：
    -1.80≤f1/f≤-0.70；
    2.00≤d15/d16≤12.00。
  2. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第九透镜物侧面的中心曲率半径为R17，所述第九透镜像侧面的中心曲率半径为R18，且满足下列关系式：
    -3.50≤R17/R18≤-1.50。
  3. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第一透镜物侧面的中心曲率半径为R1，所述第一透镜像侧面的中心曲率半径为R2，所述第一透镜的轴上厚度为d1，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    0.56≤(R1+R2)/(R1-R2)≤5.43；
    0.01≤d1/TTL≤0.06。
  4. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第二透镜的焦距为f2，所述第二透镜物侧面的中心曲率半径为R3，所述第二透镜像侧面的中心曲率半径为R4，所述第二透镜的轴上厚度为d3，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    0.24≤f2/f≤0.91；
    -2.19≤(R3+R4)/(R3-R4)≤-0.48；
    0.03≤d3/TTL≤0.16。
  5. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第三透镜的焦距为f3，所述第三透镜物侧面的中心曲率半径为R5，所述第三透镜像侧面的中心曲率半径为R6，所述第三透镜的轴上厚度为d5，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    -5.98≤f3/f≤-1.44；
    1.43≤(R5+R6)/(R5-R6)≤5.57；
    0.01≤d5/TTL≤0.04。
  6. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第四透镜的焦距为f4，所述第四透镜物侧面的中心曲率半径为R7，所述第四透镜像 侧面的中心曲率半径为R8，所述第四透镜的轴上厚度为d7，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    1.06≤f4/f≤5.31；
    0.05≤(R7+R8)/(R7-R8)≤3.87；
    0.01≤d7/TTL≤0.08。
  7. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第五透镜的焦距为f5，所述第五透镜物侧面的中心曲率半径为R9，所述第五透镜像侧面的中心曲率半径为R10，所述第五透镜的轴上厚度为d9，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    -5.01≤f5/f≤-0.97；
    -0.43≤(R9+R10)/(R9-R10)≤0.31；
    0.01≤d9/TTL≤0.07。
  8. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第六透镜的焦距为f6，所述第六透镜物侧面的中心曲率半径为R11，所述第六透镜像侧面的中心曲率半径为R12，所述第六透镜的轴上厚度为d11，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    -63.50≤f6/f≤-17.13；
    1.59≤(R11+R12)/(R11-R12)≤11.32；
    0.05≤d11/TTL≤0.18。
  9. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第七透镜的焦距为f7，所述第七透镜物侧面的中心曲率半径为R13，所述第七透镜像侧面的中心曲率半径为R14，所述第七透镜的轴上厚度为d13，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    0.48≤f7/f≤2.03；
    -3.44≤(R13+R14)/(R13-R14)≤-0.96；
    0.02≤d13/TTL≤0.09。
  10. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第八透镜的焦距为f8，所述第八透镜物侧面的中心曲率半径为R15，所述第八透镜像侧面的中心曲率半径为R16，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    0.46≤f8/f≤7.90；
    -6.50≤(R15+R16)/(R15-R16)≤-0.31；
    0.06≤d15/TTL≤0.23。
  11. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第九透镜的焦距为f9，所述第九透镜物侧面的中心曲率半径为R17，所述第九透镜像侧面的中心曲率半径为R18，所述第九透镜的轴上厚度为d17，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    -1.60≤f9/f≤-0.34；
    0.11≤(R17+R18)/(R17-R18)≤0.77；
    0.01≤d17/TTL≤0.08。
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