WO2021119887A1 - Camera optical lens - Google Patents

Camera optical lens Download PDF

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Publication number
WO2021119887A1
WO2021119887A1 PCT/CN2019/125491 CN2019125491W WO2021119887A1 WO 2021119887 A1 WO2021119887 A1 WO 2021119887A1 CN 2019125491 W CN2019125491 W CN 2019125491W WO 2021119887 A1 WO2021119887 A1 WO 2021119887A1
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WO
WIPO (PCT)
Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/125491
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French (fr)
Chinese (zh)
Inventor
陈晨曦阳
孙雯
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/125491 priority Critical patent/WO2021119887A1/en
Publication of WO2021119887A1 publication Critical patent/WO2021119887A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the present invention relates to the 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 photosensitive devices of general photographic lenses are nothing more than photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal).
  • CCD Charge Coupled Device
  • CMOS Sensor complementary metal oxide semiconductor devices
  • the pixel size of photosensitive devices has been reduced, and the development trend of current electronic products with good functions, thin and short appearance, therefore, has a good
  • the miniaturized camera lens with image quality has become the mainstream in the current market.
  • the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure.
  • the object of the present invention is to provide an imaging optical lens, which has good optical performance and meets the design requirements of large aperture, ultra-thin, and wide-angle.
  • an embodiment of the present invention provides an imaging optical lens.
  • the imaging optical lens includes, in order from the object side to the image side, a first lens with negative refractive power, and a first lens with positive refractive power.
  • Two lenses a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power;
  • the focal length of the imaging optical lens is f
  • the focal length of the first lens is f1
  • the focal length of the second lens is f2
  • the radius of curvature of the object side surface of the sixth lens is R11
  • the sixth lens image side The radius of curvature of is R12
  • the on-axis thickness of the fifth lens is d9
  • the on-axis distance from the image side of the fifth lens to the object side of the sixth lens is d10, and the following relationship is satisfied: -3.50 ⁇ f1/f ⁇ -2.00; 1.25 ⁇ f2/f ⁇ 1.80; 1.00 ⁇ (R11+R12)/(R11-R12) ⁇ 2.00; 7.00 ⁇ d9/d10 ⁇ 15.50.
  • the radius of curvature of the object side surface of the fourth lens is R7
  • the radius of curvature of the image side surface of the fourth lens is R8, and the following relationship is satisfied: 0.05 ⁇ (R7+R8)/(R7-R8) ⁇ 5.00 .
  • the on-axis thickness of the second lens is d3, and the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, and the following relationship is satisfied: 1.50 ⁇ d3/d4 ⁇ 4.50.
  • the curvature radius of the object side surface of the first lens is R1
  • the curvature radius of the image side surface of the first lens is R2
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -3.46 ⁇ (R1+R2)/(R1-R2) ⁇ 1.45; 0.03 ⁇ d1/TTL ⁇ 0.24.
  • the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the axial thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -3.21 ⁇ (R3+R4)/(R3-R4) ⁇ -0.59; 0.03 ⁇ d3/TTL ⁇ 0.14.
  • the focal length of the third lens is f3, the radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5 ,
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.65 ⁇ f3/f ⁇ 3.91; 0.41 ⁇ (R5+R6)/(R5-R6) ⁇ 2.17; 0.04 ⁇ d5/TTL ⁇ 0.17.
  • the focal length of the fourth lens is f4
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -12.09 ⁇ f4/f ⁇ - 0.96; 0.02 ⁇ d7/TTL ⁇ 0.07.
  • the focal length of the fifth lens is f5
  • the radius of curvature of the object side of the fifth lens is R9
  • the radius of curvature of the image side of the fifth lens is R10
  • the on-axis thickness of the fifth lens is d9
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.30 ⁇ f5/f ⁇ 1.07; 0.58 ⁇ (R9+R10)/(R9-R10) ⁇ 2.53; 0.05 ⁇ d9/TTL ⁇ 0.33.
  • the focal length of the sixth lens is f6, the axial thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -1.57 ⁇ f6/f ⁇ - 0.46; 0.03 ⁇ d11/TTL ⁇ 0.12.
  • the image height of the imaging optical lens is IH
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: TTL/IH ⁇ 2.20.
  • the imaging optical lens according to the present invention has excellent optical characteristics, and has the characteristics of large aperture, wide-angle, and ultra-thin. It is especially suitable for high-pixel CCD, CMOS and other imaging elements. Mobile phone camera lens assembly and WEB camera lens.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the chromatic aberration of magnification 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 diagram of the structure of an imaging optical lens according to a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of the chromatic aberration of magnification 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 diagram of the structure 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 chromatic aberration of magnification 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. 13 is a schematic diagram of the structure of an imaging optical lens according to a fourth embodiment of the present invention.
  • FIG. 14 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 13;
  • FIG. 15 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 13;
  • FIG. 16 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 13.
  • FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes six lenses. Specifically, the imaging optical lens 10 includes in order from the object side to the image side: a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens. Lens L6.
  • An optical element such as an optical filter GF may be provided between the sixth lens L6 and the image plane Si.
  • the first lens L1 has negative refractive power
  • the second lens L2 has positive refractive power
  • the third lens L3 has positive refractive power
  • the fourth lens L4 has negative refractive power
  • the fifth lens L5 has positive refractive power
  • the sixth lens L6 has Negative refractive power.
  • the focal length of the imaging optical lens 10 is defined as f
  • the focal length of the first lens L1 is f1
  • the following relationship is satisfied: -3.50 ⁇ f1/f ⁇ -2.00, which specifies the focal length of the first lens
  • the ratio to the total focal length can help reduce spherical aberration and improve imaging quality within the scope of conditions.
  • it satisfies -3.49 ⁇ f1/f ⁇ -2.02.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the second lens L2 is f2, which satisfies the following relationship: 1.25 ⁇ f2/f ⁇ 1.80, which specifies the ratio of the focal length of the second lens to the focal length of the system.
  • the range of the formula helps improve the performance of the optical system. Preferably, 1.26 ⁇ f2/f ⁇ 1.79 is satisfied.
  • the radius of curvature of the object side surface of the sixth lens L6 as R11
  • the radius of curvature of the image side surface of the sixth lens L6 as R12
  • the shape of the sixth lens is specified, and within the range specified by the conditional formula, the degree of deflection of light passing through the lens can be alleviated, and aberrations can be effectively reduced.
  • 1.03 ⁇ (R11+R12)/(R11-R12) ⁇ 1.92 is satisfied.
  • the on-axis thickness of the fifth lens L5 is defined as d9, and the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6 is d10, which satisfies the following relationship: 7.00 ⁇ d9/d10 ⁇ 15.50, when d9/d10 meet the conditions, it can effectively reduce the difficulty of lens processing and assembly. Preferably, 7.23 ⁇ d9/d10 ⁇ 15.36 is satisfied.
  • the radius of curvature of the object side surface of the fourth lens L4 as R7
  • the radius of curvature of the image side surface of the fourth lens L4 as R8, which satisfies the following relationship: 0.05 ⁇ (R7+R8)/(R7-R8) ⁇ 5.00
  • the shape of the fourth lens is specified.
  • the degree of deflection of the light passing through the lens can be eased, and aberrations can be effectively reduced, satisfying 0.05 ⁇ (R7+R8)/(R7-R8) ⁇ 4.95.
  • the on-axis thickness of the second lens L2 is defined as d3, and the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3 is d4, which satisfies the following relationship: 1.50 ⁇ d3/d4 ⁇ 4.50, when d3/d4 meets the conditions, it is beneficial to compress the total length of the system. Preferably, 1.51 ⁇ d3/d4 ⁇ 4.27 is satisfied.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.03 ⁇ d1/TTL ⁇ 0.24, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d1/TTL ⁇ 0.19 is satisfied.
  • the curvature radius of the object side surface of the second lens L2 is R3, and the curvature radius of the image side surface of the second lens L2 is R4, which satisfies the following relationship: -3.21 ⁇ (R3+R4)/(R3-R4) ⁇ -0.59 , Specifies the shape of the second lens L2.
  • it is within the range, as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration.
  • it satisfies -2.00 ⁇ (R3+R4)/(R3 -R4) ⁇ -0.74.
  • the on-axis thickness of the second lens L2 is d3, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.03 ⁇ d3/TTL ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d3/TTL ⁇ 0.11 is satisfied.
  • the focal length of the imaging optical lens 10 as f
  • the focal length of the third lens L3 as f3
  • the focal length of the third lens L3 is f3, which satisfies the following relationship: 0.65 ⁇ f3/f ⁇ 3.91.
  • the system has better Image quality and lower sensitivity.
  • 1.04 ⁇ f3/f ⁇ 3.13 is satisfied.
  • the curvature radius of the object side surface of the third lens L3 is R5, and the curvature radius of the image side surface of the third lens L3 is R6, which satisfies the following relationship: 0.41 ⁇ (R5+R6)/(R5-R6) ⁇ 2.17.
  • the shape of the three lens within the range specified by the conditional formula, can ease the deflection of light passing through the lens and effectively reduce aberration.
  • 0.66 ⁇ (R5+R6)/(R5-R6) ⁇ 1.73 is satisfied.
  • the axial thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.04 ⁇ d5/TTL ⁇ 0.17, which is beneficial to achieve ultra-thinness.
  • 0.06 ⁇ d5/TTL ⁇ 0.13 is satisfied.
  • the focal length of the imaging optical lens 10 is defined as f
  • the focal length of the fourth lens L4 is f4, which satisfies the following relationship: -12.09 ⁇ f4/f ⁇ -0.96, which specifies the ratio of the focal length of the fourth lens to the focal length of the system, It helps to improve the performance of the optical system within the range of the conditional expression. Preferably, -7.55 ⁇ f4/f ⁇ -1.20 is satisfied.
  • the axial thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d7/TTL ⁇ 0.07, which is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d7/TTL ⁇ 0.06 is satisfied.
  • the focal length of the imaging optical lens 10 is defined as f
  • the focal length of the fifth lens L5 is defined as f5, which satisfies the following relationship: 0.30 ⁇ f5/f ⁇ 1.07.
  • the limitation of the fifth lens L5 can effectively make the light angle of the camera lens smooth and reduce the tolerance sensitivity.
  • 0.48 ⁇ f5/f ⁇ 0.86 is satisfied.
  • the radius of curvature of the object side surface of the fifth lens L5 is R9
  • the radius of curvature of the image side surface of the fifth lens L5 is R10
  • the following relationship is satisfied: 0.58 ⁇ (R9+R10)/(R9-R10) ⁇ 2.53
  • the shape of the fifth lens L5 is specified.
  • it is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • 0.92 ⁇ (R9+R10)/(R9-R10) ⁇ 2.03 is satisfied.
  • the on-axis thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.05 ⁇ d9/TTL ⁇ 0.33, which is beneficial to realize ultra-thinness.
  • 0.08 ⁇ d9/TTL ⁇ 0.26 is satisfied.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the sixth lens L6 is f6, which satisfies the following relationship: -1.57 ⁇ f6/f ⁇ -0.46.
  • the system has a relatively high Good imaging quality and low sensitivity.
  • -0.98 ⁇ f6/f ⁇ -0.57 is satisfied.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.03 ⁇ d11/TTL ⁇ 0.12, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d11/TTL ⁇ 0.10 is satisfied.
  • the image height of the imaging optical lens 10 is defined as IH, and the following relationship is satisfied: TTL/IH ⁇ 2.20, thereby achieving ultra-thinness.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 2.20. Large aperture, good imaging performance.
  • the FOV of the imaging optical lens 10 is greater than or equal to 105°, thereby realizing a wide angle.
  • the imaging optical lens 10 can meet the design requirements of large aperture, wide-angle, and ultra-thin design while having good optical performance. According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for high-end cameras. Mobile phone camera lens assembly and WEB camera lens composed of CCD, CMOS and other imaging elements for pixels.
  • the imaging optical lens 10 of the present invention will be described below with an example.
  • the symbols described in each example are as follows.
  • the unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
  • TTL total optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), the unit is mm;
  • the object side and/or the image side of the lens can also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • inflection points and/or stagnation points for specific implementations, refer to the following.
  • 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 of the optical surface, and the radius of curvature of the center of the lens
  • R1 the radius of curvature of the object side surface of the first lens L1;
  • R2 the radius of curvature of the image side surface of the first lens L1;
  • R3 the radius of curvature of the object side surface of the second lens L2;
  • R4 the radius of curvature of the image side surface of the second lens L2;
  • R5 the radius of curvature of the object side surface of the third lens L3;
  • R6 the radius of curvature of the image side surface of the third lens L3;
  • R7 the radius of curvature of the object side of the fourth lens L4;
  • R8 the radius of curvature of the image side surface of the fourth lens L4;
  • R9 the radius of curvature of the object side surface of the fifth lens L5;
  • R10 the radius of curvature of the image side surface of the fifth lens L5;
  • R11 the radius of curvature of the object side surface of the sixth lens L6;
  • R12 the radius of curvature of the image side surface of the sixth lens L6;
  • R15 the radius of curvature of the object side of the optical filter GF
  • R16 the radius of curvature of the image side surface of the optical filter GF
  • d0 the on-axis distance from the aperture S1 to the object side of the first lens L1;
  • d2 the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
  • d4 the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;
  • d6 the on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
  • d10 the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
  • d11 the on-axis thickness of the sixth lens L6;
  • d12 the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;
  • d14 the on-axis distance from the image side surface of the optical filter GF to the image surface
  • nd refractive index of 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;
  • ndg the refractive index of the d-line of the optical filter GF
  • vg Abbe number of optical filter GF.
  • Table 2 shows the aspheric surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • 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 stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention.
  • P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively.
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and the image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and the image side of the sixth lens L6, respectively.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary 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 having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 10 of the first embodiment.
  • Fig. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 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. song.
  • Table 17 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
  • the first embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 0.941mm
  • the full-field image height is 2.91mm
  • the diagonal viewing angle is 120.00°
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • FIG. 6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm 0 passes through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 20 of the second embodiment.
  • the second embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 0.993mm
  • the full-field image height is 2.91mm
  • the diagonal viewing angle is 115.60°, wide-angle, ultra-thin, and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • 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 the aspheric 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 of 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 having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 30 of the third embodiment.
  • Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 1.103mm
  • the full-field image height is 2.91mm
  • the diagonal field angle is 107.20°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the fourth embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 13 and Table 14 show design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.
  • Table 14 shows the aspheric surface data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.
  • Table 15 and Table 16 show the inflection point and stagnation point design data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.
  • FIG. 14 and 15 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 40 of the fourth embodiment.
  • FIG. 16 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 40 of the fourth embodiment.
  • Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 0.942mm
  • the full-field image height is 2.91mm
  • the diagonal viewing angle is 120.00°
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 Example 4 f1/f -3.18 -2.04 -2.81 -3.48 f2/f 1.66 1.60 1.26 1.77 (R11+R12)/(R11-R12) 1.40 1.84 1.58 1.05 d9/d10 7.45 15.11 13.38 15.21 f 1.863 2.184 2.172 1.866
  • Fno is the aperture F number of the imaging optical lens.

Abstract

A camera optical lens, sequentially comprising from an object side to an image side: a first lens having negative refractive power, a second lens having positive refractive power, a third lens having positive refractive power, a fourth lens having negative refractive power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power. The focal length of the camera optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the radius of curvature of the object side surface of the sixth lens is R11, the radius of curvature of the image side surface of the sixth lens is R12, the on-axis thickness of the fifth lens is d9, the on-axis distance from the image side surface of the fifth lens to the object side surface of the sixth lens is d10, and the following relations are satisfied: -3.50≤f1/f≤-2.00; 1.25≤f2/f≤1.80; 1.00≤(R11+R12)/(R11-R12)≤2.00; 7.00≤d9/d10≤15.50. The camera optical lens satisfies the design requirements for large aperture, wide angle and ultra-thinness while having good optical performance.

Description

摄像光学镜头Camera optical lens 技术领域Technical field
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。The present 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.
背景技术Background technique
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-OxideSemicondctor 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或四片式透镜结构。并且，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，五片式、六片式、七片式透镜结构逐渐出现在镜头设计当中。迫切需求具有优秀的光学特征、超薄且色像差充分补正的广角摄像镜头。In recent years, with the rise of smartphones, the demand for miniaturized photographic lenses has increased. The photosensitive devices of general photographic lenses are nothing more than photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal). -OxideSemicondctor Sensor, CMOS Sensor), and due to the advancement of semiconductor manufacturing technology, the pixel size of photosensitive devices has been reduced, and the development trend of current electronic products with good functions, thin and short appearance, therefore, has a good The miniaturized camera lens with image quality has become the mainstream in the current market. In order to obtain better imaging quality, the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure. Moreover, with the development of technology and the increase of diversified needs of users, the pixel area of photosensitive devices is shrinking, and the system's requirements for image quality continue to increase, five-element, six-element, and seven-element lens structures Gradually appeared in the lens design. There is an urgent need for a wide-angle camera lens with excellent optical characteristics, ultra-thin and fully corrected chromatic aberrations.
发明内容Summary of the invention
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，满足大光圈、超薄化、广角化的设计要求。In view of the above-mentioned problems, the object of the present invention is to provide an imaging optical lens, which has good optical performance and meets the design requirements of large aperture, ultra-thin, and wide-angle.
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，自物侧至像侧依序包含：具有负屈折力的第一透镜，具有正屈折力的第二透镜，具有正屈折力的第三透镜，具有负屈折力的第四透镜，具有正屈折力的第五透镜，具有负屈折力的第六透镜；In order to solve the above technical problems, an embodiment of the present invention provides an imaging optical lens. The imaging optical lens includes, in order from the object side to the image side, a first lens with negative refractive power, and a first lens with positive refractive power. Two lenses, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power;
所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第二透镜的焦距为f2，所述第六透镜物侧面的曲率半径为R11，所述第六透镜像侧面的曲率半径为R12，所述第五透镜的轴上厚度为d9，所述第五透镜的像侧面到所述第六透镜的物侧面的轴上距离为d10，且满足下列关系式：-3.50≤f1/f≤-2.00；1.25≤f2/f≤1.80；1.00≤(R11+R12)/(R11-R12)≤2.00；7.00≤d9/d10≤15.50。The focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the radius of curvature of the object side surface of the sixth lens is R11, and the sixth lens image side The radius of curvature of is R12, the on-axis thickness of the fifth lens is d9, the on-axis distance from the image side of the fifth lens to the object side of the sixth lens is d10, and the following relationship is satisfied: -3.50 ≤f1/f≤-2.00; 1.25≤f2/f≤1.80; 1.00≤(R11+R12)/(R11-R12)≤2.00; 7.00≤d9/d10≤15.50.
优选地，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，且满足下列关系式：0.05≤(R7+R8)/(R7-R8)≤5.00。Preferably, the radius of curvature of the object side surface of the fourth lens is R7, and the radius of curvature of the image side surface of the fourth lens is R8, and the following relationship is satisfied: 0.05≤(R7+R8)/(R7-R8)≤5.00 .
优选地，所述第二透镜的轴上厚度为d3，所述第二透镜的像侧面到所述第三透镜的物侧面的轴上距离为d4，且满足下列关系式：1.50≤d3/d4≤4.50。Preferably, the on-axis thickness of the second lens is d3, and the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, and the following relationship is satisfied: 1.50≤d3/d4 ≤4.50.
优选地，所述第一透镜物侧面的曲率半径为R1，所述第一透镜像侧面的曲率半径为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：-3.46≤(R1+R2)/(R1-R2)≤1.45；0.03≤d1/TTL≤0.24。Preferably, the curvature radius of the object side surface of the first lens is R1, the curvature radius of the image side surface of the first lens is R2, the axial thickness of the first lens is d1, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -3.46≤(R1+R2)/(R1-R2)≤1.45; 0.03≤d1/TTL≤0.24.
优选地，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为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：-3.21≤(R3+R4)/(R3-R4)≤-0.59；0.03≤d3/TTL≤0.14。Preferably, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the axial thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -3.21≤(R3+R4)/(R3-R4)≤-0.59; 0.03≤d3/TTL≤0.14.
优选地，所述第三透镜的焦距为f3，所述第三透镜物侧面的曲率半径为R5，所述第三透镜像侧面的曲率半径为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：0.65≤f3/f≤3.91；0.41≤(R5+R6)/(R5-R6)≤2.17；0.04≤d5/TTL≤0.17。Preferably, the focal length of the third lens is f3, the radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5 , The total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.65≤f3/f≤3.91; 0.41≤(R5+R6)/(R5-R6)≤2.17; 0.04≤d5/TTL≤0.17.
优选地，所述第四透镜的焦距为f4，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：-12.09≤f4/f≤-0.96；0.02≤d7/TTL≤0.07。Preferably, the focal length of the fourth lens is f4, the axial thickness of the fourth lens is d7, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -12.09≤f4/f≤- 0.96; 0.02≤d7/TTL≤0.07.
优选地，所述第五透镜的焦距为f5，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为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：0.30≤f5/f≤1.07；0.58≤(R9+R10)/(R9-R10)≤2.53；0.05≤d9/TTL≤0.33。Preferably, the focal length of the fifth lens is f5, the radius of curvature of the object side of the fifth lens is R9, the radius of curvature of the image side of the fifth lens is R10, and the on-axis thickness of the fifth lens is d9 , The total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.30≤f5/f≤1.07; 0.58≤(R9+R10)/(R9-R10)≤2.53; 0.05≤d9/TTL≤0.33.
优选地，所述第六透镜的焦距为f6，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：-1.57≤f6/f≤-0.46；0.03≤d11/TTL≤0.12。Preferably, the focal length of the sixth lens is f6, the axial thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -1.57≤f6/f≤- 0.46; 0.03≤d11/TTL≤0.12.
优选地，所述摄像光学镜头的像高为IH，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：TTL/IH≤2.20。Preferably, the image height of the imaging optical lens is IH, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: TTL/IH≤2.20.
本发明的有益效果在于：根据本发明的摄像光学镜头具有优秀的光学特性，且具有大光圈、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。The beneficial effects of the present invention are: the imaging optical lens according to the present invention has excellent optical characteristics, and has the characteristics of large aperture, wide-angle, and ultra-thin. It is especially suitable for high-pixel CCD, CMOS and other imaging elements. Mobile phone camera lens assembly and WEB camera lens.
附图说明Description of the drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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例，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：In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:
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；FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present invention;
图2是图1所示摄像光学镜头的轴向像差示意图；FIG. 2 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 1;
图3是图1所示摄像光学镜头的倍率色差示意图；3 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 1;
图4是图1所示摄像光学镜头的场曲及畸变示意图；4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
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；5 is a schematic diagram of the structure of an imaging optical lens according to a second embodiment of the present invention;
图6是图5所示摄像光学镜头的轴向像差示意图；FIG. 6 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 5;
图7是图5所示摄像光学镜头的倍率色差示意图；FIG. 7 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 5;
图8是图5所示摄像光学镜头的场曲及畸变示意图；FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
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；9 is a schematic diagram of the structure of an imaging optical lens according to a third embodiment of the present invention;
图10是图9所示摄像光学镜头的轴向像差示意图；10 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 9;
图11是图9所示摄像光学镜头的倍率色差示意图；11 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 9;
图12是图9所示摄像光学镜头的场曲及畸变示意图；FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9;
图13是本发明第四实施方式的摄像光学镜头的结构示意图；13 is a schematic diagram of the structure of an imaging optical lens according to a fourth embodiment of the present invention;
图14是图13所示摄像光学镜头的轴向像差示意图；FIG. 14 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 13;
图15是图13所示摄像光学镜头的倍率色差示意图；15 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 13;
图16是图13所示摄像光学镜头的场曲及畸变示意图。FIG. 16 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 13.
具体实施方式Detailed ways
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。In order to make the objectives, technical solutions and advantages of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, a person of ordinary skill in the art can understand that, in each embodiment of the present invention, many technical details are proposed for the reader to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed by the present invention can be realized.
(第一实施方式)(First embodiment)
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包括六个透镜。具体的，所述摄像光学镜头10，由物侧至像侧依序包括：第一透镜L1、光圈S1、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。第六透镜L6和像面Si之间可设置有光学过滤片(filter)GF等光学元件。With reference to the drawings, the present invention provides an imaging optical lens 10. FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention. The imaging optical lens 10 includes six lenses. Specifically, the imaging optical lens 10 includes in order from the object side to the image side: a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens. Lens L6. An optical element such as an optical filter GF may be provided between the sixth lens L6 and the image plane Si.
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具有正屈折力，第四透镜L4具有负屈折力，第五透镜L5具有正屈折力，第六透镜L6具有负屈折力。The first lens L1 has negative refractive power, the second lens L2 has positive refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has Negative refractive power.
在本实施方式中，定义所述摄像光学镜头10的焦距为f，所述第一透镜L1的焦距为f1，满足下列关系式：-3.50≤f1/f≤-2.00，规定了第一透镜焦距与总焦距的比值，在条件范围内有助于减小球差，提高成像质量。优选地，满足-3.49≤f1/f≤-2.02。In this embodiment, the focal length of the imaging optical lens 10 is defined as f, the focal length of the first lens L1 is f1, and the following relationship is satisfied: -3.50≤f1/f≤-2.00, which specifies the focal length of the first lens The ratio to the total focal length can help reduce spherical aberration and improve imaging quality within the scope of conditions. Preferably, it satisfies -3.49≤f1/f≤-2.02.
定义所述摄像光学镜头10的焦距为f，所述第二透镜L2的焦距为f2，满足下列关系式：1.25≤f2/f≤1.80，规定了第二透镜焦距与系统焦距的比值，在条件式范围内有助于提高光学系统性能。优选地，满足1.26≤f2/f≤1.79。The focal length of the imaging optical lens 10 is defined as f, and the focal length of the second lens L2 is f2, which satisfies the following relationship: 1.25≤f2/f≤1.80, which specifies the ratio of the focal length of the second lens to the focal length of the system. The range of the formula helps improve the performance of the optical system. Preferably, 1.26≤f2/f≤1.79 is satisfied.
定义所述第六透镜L6物侧面的曲率半径为R11，所述第六透镜L6像侧面的曲率半径为R12，满足下列关系式：1.00≤(R11+R12)/(R11-R12)≤2.00，规定了第六透镜的形状，在条件式规定范围内，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1.03≤(R11+R12)/(R11-R12)≤1.92。Define the radius of curvature of the object side surface of the sixth lens L6 as R11, and the radius of curvature of the image side surface of the sixth lens L6 as R12, satisfying the following relationship: 1.00≤(R11+R12)/(R11-R12)≤2.00, The shape of the sixth lens is specified, and within the range specified by the conditional formula, the degree of deflection of light passing through the lens can be alleviated, and aberrations can be effectively reduced. Preferably, 1.03≤(R11+R12)/(R11-R12)≤1.92 is satisfied.
定义所述第五透镜L5的轴上厚度为d9，所述第五透镜L5的像侧面到所述第六透镜L6的物侧面的轴上距离为d10，满足下列关系式：7.00≤d9/d10≤15.50，当d9/d10满足条件时，可有效降低镜片加工和组装难度。优选地，满足7.23≤d9/d10≤15.36。The on-axis thickness of the fifth lens L5 is defined as d9, and the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6 is d10, which satisfies the following relationship: 7.00≤d9/d10 ≤15.50, when d9/d10 meet the conditions, it can effectively reduce the difficulty of lens processing and assembly. Preferably, 7.23≤d9/d10≤15.36 is satisfied.
定义所述第四透镜L4物侧面的曲率半径为R7，所述第四透镜L4像侧面的曲率半径为R8，满足下列关系式：0.05≤(R7+R8)/(R7-R8)≤5.00，规定了第四透镜的形状，在条件式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差，满足0.05≤(R7+R8)/(R7-R8)≤4.95。Define the radius of curvature of the object side surface of the fourth lens L4 as R7, and the radius of curvature of the image side surface of the fourth lens L4 as R8, which satisfies the following relationship: 0.05≤(R7+R8)/(R7-R8)≤5.00, The shape of the fourth lens is specified. Within the specified range of the conditional formula, the degree of deflection of the light passing through the lens can be eased, and aberrations can be effectively reduced, satisfying 0.05≤(R7+R8)/(R7-R8)≤4.95.
定义所述第二透镜L2的轴上厚度为d3，所述第二透镜L2的像侧面到所述第三透镜L3的物侧面的轴上距离为d4，满足下列关系式：1.50≤d3/d4≤4.50，当d3/d4满足条件时，有利于压缩系统总长。优选 地，满足1.51≤d3/d4≤4.27。The on-axis thickness of the second lens L2 is defined as d3, and the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3 is d4, which satisfies the following relationship: 1.50≤d3/d4 ≤4.50, when d3/d4 meets the conditions, it is beneficial to compress the total length of the system. Preferably, 1.51≤d3/d4≤4.27 is satisfied.
定义所述第一透镜L1物侧面的曲率半径为R1，所述第一透镜L1像侧面的曲率半径为R2，满足下列关系式：-3.46≤(R1+R2)/(R1-R2)≤1.45，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-2.16≤(R1+R2)/(R1-R2)≤1.16。Define the curvature radius of the object side surface of the first lens L1 as R1, and the curvature radius of the image side surface of the first lens L1 as R2, which satisfies the following relationship: -3.46≤(R1+R2)/(R1-R2)≤1.45 , Reasonable control of the shape of the first lens L1, so that the first lens L1 can effectively correct the system spherical aberration, preferably, satisfies -2.16≤(R1+R2)/(R1-R2)≤1.16.
所述第一透镜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：0.03≤d1/TTL≤0.24，有利于实现超薄化。优选地，满足0.04≤d1/TTL≤0.19。The axial thickness of the first lens L1 is d1, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.03≤d1/TTL≤0.24, which is beneficial to realize ultra-thinness. Preferably, 0.04≤d1/TTL≤0.19 is satisfied.
所述第二透镜L2物侧面的曲率半径为R3，所述第二透镜L2像侧面的曲率半径为R4，满足下列关系式：-3.21≤(R3+R4)/(R3-R4)≤-0.59，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-2.00≤(R3+R4)/(R3-R4)≤-0.74。The curvature radius of the object side surface of the second lens L2 is R3, and the curvature radius of the image side surface of the second lens L2 is R4, which satisfies the following relationship: -3.21≤(R3+R4)/(R3-R4)≤-0.59 , Specifies the shape of the second lens L2. When it is within the range, as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration. Preferably, it satisfies -2.00≤(R3+R4)/(R3 -R4)≤-0.74.
所述第二透镜L2的轴上厚度为d3，摄像光学镜头10的光学总长为TTL，满足下列关系式：0.03≤d3/TTL≤0.14，有利于实现超薄化。优选地，满足0.05≤d3/TTL≤0.11。The on-axis thickness of the second lens L2 is d3, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.03≤d3/TTL≤0.14, which is beneficial to realize ultra-thinness. Preferably, 0.05≤d3/TTL≤0.11 is satisfied.
定义所述摄像光学镜头10的焦距为f，所述第三透镜L3的焦距为f3，满足下列关系式：0.65≤f3/f≤3.91，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1.04≤f3/f≤3.13。Define the focal length of the imaging optical lens 10 as f, and the focal length of the third lens L3 as f3, which satisfies the following relationship: 0.65≤f3/f≤3.91. Through the reasonable distribution of optical power, the system has better Image quality and lower sensitivity. Preferably, 1.04≤f3/f≤3.13 is satisfied.
所述第三透镜L3物侧面的曲率半径为R5，第三透镜L3像侧面的曲率半径为R6，满足下列关系式：0.41≤(R5+R6)/(R5-R6)≤2.17，规定了第三透镜的形状，在条件式规定范围内，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0.66≤(R5+R6)/(R5-R6)≤1.73。The curvature radius of the object side surface of the third lens L3 is R5, and the curvature radius of the image side surface of the third lens L3 is R6, which satisfies the following relationship: 0.41≤(R5+R6)/(R5-R6)≤2.17. The shape of the three lens, within the range specified by the conditional formula, can ease the deflection of light passing through the lens and effectively reduce aberration. Preferably, 0.66≤(R5+R6)/(R5-R6)≤1.73 is satisfied.
所述第三透镜L3的轴上厚度为d5，摄像光学镜头10的光学总长为TTL，满足下列关系式：0.04≤d5/TTL≤0.17，有利于实现超薄化。优选地，满足0.06≤d5/TTL≤0.13。The axial thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.04≤d5/TTL≤0.17, which is beneficial to achieve ultra-thinness. Preferably, 0.06≤d5/TTL≤0.13 is satisfied.
定义所述摄像光学镜头10的焦距为f，所述第四透镜L4的焦距为f4，满足下列关系式：-12.09≤f4/f≤-0.96，规定了第四透镜焦距与系统焦距的比值，在条件式范围内有助于提高光学系统性能。优选地，满足-7.55≤f4/f≤-1.20。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: -12.09≤f4/f≤-0.96, which specifies the ratio of the focal length of the fourth lens to the focal length of the system, It helps to improve the performance of the optical system within the range of the conditional expression. Preferably, -7.55≤f4/f≤-1.20 is satisfied.
所述第四透镜L4的轴上厚度为d7，摄像光学镜头10的光学总长为TTL，满足下列关系式：0.02≤d7/TTL≤0.07，有利于实现超薄化。优选地，满足0.03≤d7/TTL≤0.06。The axial thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02≤d7/TTL≤0.07, which is beneficial to realize ultra-thinness. Preferably, 0.03≤d7/TTL≤0.06 is satisfied.
定义所述摄像光学镜头10的焦距为f，所述第五透镜L5的焦距为 f5，满足下列关系式：0.30≤f5/f≤1.07。对第五透镜L5的限定可有效的使得摄像镜头的光线角度平缓，降低公差敏感度。优选地，满足0.48≤f5/f≤0.86。The focal length of the imaging optical lens 10 is defined as f, and the focal length of the fifth lens L5 is defined as f5, which satisfies the following relationship: 0.30≤f5/f≤1.07. The limitation of the fifth lens L5 can effectively make the light angle of the camera lens smooth and reduce the tolerance sensitivity. Preferably, 0.48≤f5/f≤0.86 is satisfied.
所述第五透镜L5物侧面的曲率半径为R9，所述第五透镜L5像侧面的曲率半径为R10，且满足下列关系式：0.58≤(R9+R10)/(R9-R10)≤2.53，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0.92≤(R9+R10)/(R9-R10)≤2.03。The radius of curvature of the object side surface of the fifth lens L5 is R9, and the radius of curvature of the image side surface of the fifth lens L5 is R10, and the following relationship is satisfied: 0.58≤(R9+R10)/(R9-R10)≤2.53, The shape of the fifth lens L5 is specified. When it is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view. Preferably, 0.92≤(R9+R10)/(R9-R10)≤2.03 is satisfied.
所述第五透镜L5的轴上厚度为d9，摄像光学镜头10的光学总长为TTL，满足下列关系式：0.05≤d9/TTL≤0.33，有利于实现超薄化。优选地，满足0.08≤d9/TTL≤0.26。The on-axis thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.05≤d9/TTL≤0.33, which is beneficial to realize ultra-thinness. Preferably, 0.08≤d9/TTL≤0.26 is satisfied.
定义所述摄像光学镜头10的焦距为f，所述第六透镜L6的焦距为f6，满足下列关系式：-1.57≤f6/f≤-0.46，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-0.98≤f6/f≤-0.57。The focal length of the imaging optical lens 10 is defined as f, and the focal length of the sixth lens L6 is f6, which satisfies the following relationship: -1.57≤f6/f≤-0.46. Through the reasonable distribution of optical power, the system has a relatively high Good imaging quality and low sensitivity. Preferably, -0.98≤f6/f≤-0.57 is satisfied.
所述第六透镜L6的轴上厚度为d11，满足下列关系式：0.03≤d11/TTL≤0.12，有利于实现超薄化。优选地，满足0.04≤d11/TTL≤0.10。The on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.03≤d11/TTL≤0.12, which is beneficial to realize ultra-thinness. Preferably, 0.04≤d11/TTL≤0.10 is satisfied.
定义所述摄像光学镜头10的像高为IH，且满足下列关系式：TTL/IH≤2.20，从而实现超薄化。The image height of the imaging optical lens 10 is defined as IH, and the following relationship is satisfied: TTL/IH≤2.20, thereby achieving ultra-thinness.
本实施方式中，摄像光学镜头10的光圈F数小于或等于2.20。大光圈，成像性能好。In this embodiment, the aperture F number of the imaging optical lens 10 is less than or equal to 2.20. Large aperture, good imaging performance.
本实施方式中，摄像光学镜头10的视场角FOV大于或等于105°，从而实现广角化。In this embodiment, the FOV of the imaging optical lens 10 is greater than or equal to 105°, thereby realizing a wide angle.
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，能够满足大光圈、广角化、超薄化的设计要求；根据该光学镜头10的特性，该光学镜头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。When the above relationship is satisfied, the imaging optical lens 10 can meet the design requirements of large aperture, wide-angle, and ultra-thin design while having good optical performance. According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for high-end cameras. Mobile phone camera lens assembly and WEB camera lens composed of CCD, CMOS and other imaging elements for pixels.
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、曲率半径、轴上厚度、反曲点位置、驻点位置的单位为mm。The imaging optical lens 10 of the present invention will be described below with an example. The symbols described in each example are as follows. The unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
TTL：光学总长(第一透镜L1的物侧面到成像面的轴上距离)，单位为mm；TTL: total optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), the unit is mm;
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。Preferably, the object side and/or the image side of the lens can also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements. For specific implementations, refer to the following.
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。Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
【表1】【Table 1】
Figure PCTCN2019125491-appb-000001
Figure PCTCN2019125491-appb-000001
其中，各符号的含义如下。Among them, the meaning of each symbol is as follows.
S1：光圈；S1: aperture;
R：光学面的曲率半径、透镜时为中心曲率半径；R: The radius of curvature of the optical surface, and the radius of curvature of the center of the lens;
R1：第一透镜L1的物侧面的曲率半径；R1: the radius of curvature of the object side surface of the first lens L1;
R2：第一透镜L1的像侧面的曲率半径；R2: the radius of curvature of the image side surface of the first lens L1;
R3：第二透镜L2的物侧面的曲率半径；R3: the radius of curvature of the object side surface of the second lens L2;
R4：第二透镜L2的像侧面的曲率半径；R4: the radius of curvature of the image side surface of the second lens L2;
R5：第三透镜L3的物侧面的曲率半径；R5: the radius of curvature of the object side surface of the third lens L3;
R6：第三透镜L3的像侧面的曲率半径；R6: the radius of curvature of the image side surface of the third lens L3;
R7：第四透镜L4的物侧面的曲率半径；R7: the radius of curvature of the object side of the fourth lens L4;
R8：第四透镜L4的像侧面的曲率半径；R8: the radius of curvature of the image side surface of the fourth lens L4;
R9：第五透镜L5的物侧面的曲率半径；R9: the radius of curvature of the object side surface of the fifth lens L5;
R10：第五透镜L5的像侧面的曲率半径；R10: the radius of curvature of the image side surface of the fifth lens L5;
R11：第六透镜L6的物侧面的曲率半径；R11: the radius of curvature of the object side surface of the sixth lens L6;
R12：第六透镜L6的像侧面的曲率半径；R12: the radius of curvature of the image side surface of the sixth lens L6;
R15：光学过滤片GF的物侧面的曲率半径；R15: the radius of curvature of the object side of the optical filter GF;
R16：光学过滤片GF的像侧面的曲率半径；R16: the radius of curvature of the image side surface of the optical filter GF;
d：透镜的轴上厚度与透镜之间的轴上距离；d: the on-axis thickness of the lens and the on-axis distance between the lenses;
d0：光圈S1到第一透镜L1的物侧面的轴上距离；d0: the on-axis distance from the aperture S1 to the object side of the first lens L1;
d1：第一透镜L1的轴上厚度；d1: the on-axis thickness of the first lens L1;
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；d2: the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
d3：第二透镜L2的轴上厚度；d3: the on-axis thickness of the second lens L2;
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；d4: the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;
d5：第三透镜L3的轴上厚度；d5: the on-axis thickness of the third lens L3;
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；d6: the on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
d7：第四透镜L4的轴上厚度；d7: the on-axis thickness of the fourth lens L4;
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；d8: the on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;
d9：第五透镜L5的轴上厚度；d9: the on-axis thickness of the fifth lens L5;
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；d10: the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
d11：第六透镜L6的轴上厚度；d11: the on-axis thickness of the sixth lens L6;
d12：第六透镜L6的像侧面到光学过滤片GF的物侧面的轴上距离；d12: the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;
d13：光学过滤片GF的轴上厚度；d13: the axial thickness of the optical filter GF;
d14：光学过滤片GF的像侧面到像面的轴上距离；d14: the on-axis distance from the image side surface of the optical filter GF to the image surface;
nd：d线的折射率；nd: refractive index of d-line;
nd1：第一透镜L1的d线的折射率；nd1: the refractive index of the d-line of the first lens L1;
nd2：第二透镜L2的d线的折射率；nd2: the refractive index of the d-line of the second lens L2;
nd3：第三透镜L3的d线的折射率；nd3: the refractive index of the d-line of the third lens L3;
nd4：第四透镜L4的d线的折射率；nd4: the refractive index of the d-line of the fourth lens L4;
nd5：第五透镜L5的d线的折射率；nd5: the refractive index of the d-line of the fifth lens L5;
nd6：第六透镜L6的d线的折射率；nd6: the refractive index of the d-line of the sixth lens L6;
ndg：光学过滤片GF的d线的折射率；ndg: the refractive index of the d-line of the optical filter GF;
vd：阿贝数；vd: Abbe number;
v1：第一透镜L1的阿贝数；v1: Abbe number of the first lens L1;
v2：第二透镜L2的阿贝数；v2: Abbe number of the second lens L2;
v3：第三透镜L3的阿贝数；v3: Abbe number of the third lens L3;
v4：第四透镜L4的阿贝数；v4: Abbe number of the fourth lens L4;
v5：第五透镜L5的阿贝数；v5: Abbe number of the fifth lens L5;
v6：第六透镜L6的阿贝数；v6: Abbe number of the sixth lens L6;
vg：光学过滤片GF的阿贝数。vg: Abbe number of optical filter GF.
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。Table 2 shows the aspheric surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
【表2】【Table 2】
Figure PCTCN2019125491-appb-000002
Figure PCTCN2019125491-appb-000002
其中，k是圆锥系数，A4、A6、A8、A10、A12、A14、A16、A18、A20是非球面系数。Among them, k is the conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.
IH：像高IH: Image height
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) 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)
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。For convenience, the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1). However, the present invention is not limited to the aspheric polynomial form represented by the formula (1).
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。“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。Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention. Among them, P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively, P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively, and P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively. P4R1, P4R2 represent the object side and image side of the fourth lens L4, P5R1, P5R2 represent the object side and the image side of the fifth lens L5, and P6R1, P6R2 represent the object side and the image side of the sixth lens L6, respectively. The corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10. The data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
【表3】【table 3】
Figure PCTCN2019125491-appb-000003
Figure PCTCN2019125491-appb-000003
【表4】【Table 4】
 To 驻点个数Number of stationary points 驻点位置1Stagnation position 1 驻点位置2Stagnation position 2
P1R1 P1R1 11 1.4951.495  To
P1R2 P1R2 11 0.4150.415  To
P2R1 P2R1 00  To  To
P2R2 P2R2 00  To  To
P3R1 P3R1 00  To  To
P3R2 P3R2 00  To  To
P4R1 P4R1 00  To  To
P4R2 P4R2 11 0.5950.595  To
P5R1 P5R1 00  To  To
P5R2 P5R2 00  To  To
P6R1P6R1 22 0.7150.715 2.0252.025
P6R2 P6R2 11 1.4951.495  To
图2、图3分别示出了波长为650nm、610nm、555nm、510nm、470nm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555nm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。2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 10 of the first embodiment. Fig. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 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. song.
后出现的表17示出各实例1、2、3中各种数值与条件式中已规定的参数所对应的值。The following Table 17 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
如表17所示，第一实施方式满足各条件式。As shown in Table 17, the first embodiment satisfies various conditional expressions.
在本实施方式中，所述摄像光学镜头的入瞳直径为0.941mm，全视场像高为2.91mm，对角线方向的视场角为120.00°，广角、超薄，其轴上、轴外色像差充分补正，且具有优秀的光学特征。In this embodiment, the entrance pupil diameter of the imaging optical lens is 0.941mm, the full-field image height is 2.91mm, and the diagonal viewing angle is 120.00°, wide-angle, ultra-thin, and its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
(第二实施方式)(Second embodiment)
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，以下只列出不同点。The second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
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。Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
【表5】【table 5】
Figure PCTCN2019125491-appb-000004
Figure PCTCN2019125491-appb-000004
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。Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
【表6】【Table 6】
Figure PCTCN2019125491-appb-000005
Figure PCTCN2019125491-appb-000005
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。Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
【表7】【Table 7】
 To 反曲点个数Number of recurve points 反曲点位置1 Recurve point position 1 反曲点位置2Recurve point position 2 反曲点位置3Recurve point position 3
P1R1P1R1 22 0.0750.075 1.3551.355  To
P1R2P1R2 22 1.0351.035 1.1151.115  To
P2R1 P2R1 00  To  To  To
P2R2 P2R2 00  To  To  To
P3R1 P3R1 11 0.1450.145  To  To
P3R2 P3R2 00  To  To  To
P4R1 P4R1 11 0.1950.195  To  To
P4R2P4R2 22 0.4050.405 0.9350.935  To
P5R1P5R1 33 0.5950.595 0.6450.645 0.9750.975
P5R2 P5R2 11 1.0451.045  To  To
P6R1P6R1 22 0.3150.315 1.5051.505  To
P6R2P6R2 22 0.4850.485 2.3052.305  To
【表8】【Table 8】
 To 驻点个数Number of stationary points 驻点位置1Stagnation position 1
P1R1 P1R1 11 0.1150.115
P1R2 P1R2 00  To
P2R1 P2R1 00  To
P2R2 P2R2 00  To
P3R1 P3R1 11 0.2350.235
P3R2 P3R2 00  To
P4R1 P4R1 11 0.3350.335
P4R2 P4R2 11 0.7550.755
P5R1 P5R1 00  To
P5R2 P5R2 00  To
P6R1 P6R1 11 0.6050.605
P6R2 P6R2 11 1.3951.395
图6、图7分别示出了波长为650nm、610nm、555nm、510nm、470nm0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555nm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。6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm 0 passes through the imaging optical lens 20 of the second embodiment. FIG. 8 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 20 of the second embodiment.
如表17所示，第二实施方式满足各条件式。As shown in Table 17, the second embodiment satisfies various conditional expressions.
在本实施方式中，所述摄像光学镜头的入瞳直径为0.993mm，全视场像高为2.91mm，对角线方向的视场角为115.60°，广角、超薄，其轴上、轴外色像差充分补正，且具有优秀的光学特征。In this embodiment, the entrance pupil diameter of the imaging optical lens is 0.993mm, the full-field image height is 2.91mm, and the diagonal viewing angle is 115.60°, wide-angle, ultra-thin, and its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
(第三实施方式)(Third embodiment)
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，以下只列出不同点。The third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
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。Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
【表9】【Table 9】
Figure PCTCN2019125491-appb-000006
Figure PCTCN2019125491-appb-000006
Figure PCTCN2019125491-appb-000007
Figure PCTCN2019125491-appb-000007
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。Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
【表10】【Table 10】
Figure PCTCN2019125491-appb-000008
Figure PCTCN2019125491-appb-000008
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。Table 11 and Table 12 show the inflection point and stagnation point design data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
【表11】【Table 11】
 To 反曲点个数Number of recurve points 反曲点位置1 Recurve point position 1 反曲点位置2Recurve point position 2 反曲点位置3Recurve point position 3
P1R1P1R1 22 0.1450.145 1.2551.255  To
P1R2 P1R2 11 0.9850.985  To  To
P2R1 P2R1 11 0.6350.635  To  To
P2R2 P2R2 00  To  To  To
P3R1 P3R1 00  To  To  To
P3R2 P3R2 11 0.7950.795  To  To
P4R1 P4R1 00  To  To  To
P4R2P4R2 22 0.2250.225 0.7950.795  To
P5R1 P5R1 00  To  To  To
P5R2P5R2 22 0.8750.875 1.3251.325  To
P6R1P6R1 33 0.3250.325 1.2851.285 2.0152.015
P6R2P6R2 22 0.4850.485 2.3952.395  To
【表12】【Table 12】
  To 驻点个数Number of stationary points 驻点位置1Stagnation position 1
P1R1 P1R1 11 0.2450.245
P1R2 P1R2 00  To
P2R1 P2R1 00  To
P2R2 P2R2 00  To
P3R1 P3R1 00  To
P3R2 P3R2 00  To
P4R1 P4R1 00  To
P4R2 P4R2 11 0.4250.425
P5R1 P5R1 00  To
P5R2 P5R2 00  To
P6R1 P6R1 11 0.6050.605
P6R2 P6R2 11 1.4151.415
图10、图11分别示出了波长为650nm、610nm、555nm、510nm、470nm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555nm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。10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 30 of the third embodiment. FIG. 12 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 30 of the third embodiment.
以下表17按照上述条件式列出了本实施方式中对应各条件式的数值。显然，本实施方式的摄像光学系统满足上述的条件式。The following Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
在本实施方式中，所述摄像光学镜头的入瞳直径为1.103mm，全视场像高为2.91mm，对角线方向的视场角为107.20°，广角、超薄，其轴上、轴外色像差充分补正，且具有优秀的光学特征。In this embodiment, the entrance pupil diameter of the imaging optical lens is 1.103mm, the full-field image height is 2.91mm, the diagonal field angle is 107.20°, wide-angle, ultra-thin, and its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
(第四实施方式)(Fourth embodiment)
第四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，以下只列出不同点。The fourth embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
表13、表14示出本发明第四实施方式的摄像光学镜头40的设计数据。Table 13 and Table 14 show design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.
【表13】【Table 13】
Figure PCTCN2019125491-appb-000009
Figure PCTCN2019125491-appb-000009
Figure PCTCN2019125491-appb-000010
Figure PCTCN2019125491-appb-000010
表14示出本发明第四实施方式的摄像光学镜头40中各透镜的非球面数据。Table 14 shows the aspheric surface data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.
【表14】【Table 14】
Figure PCTCN2019125491-appb-000011
Figure PCTCN2019125491-appb-000011
表15、表16示出本发明第四实施方式的摄像光学镜头40中各透镜的反曲点以及驻点设计数据。Table 15 and Table 16 show the inflection point and stagnation point design data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.
【表15】【Table 15】
 To 反曲点个数Number of recurve points 反曲点位置1 Recurve point position 1 反曲点位置2Recurve point position 2 反曲点位置3Recurve point position 3
P1R1P1R1 22 0.6650.665 2.7952.795  To
P1R2P1R2 22 0.2450.245 1.5351.535  To
P2R1 P2R1 00  To  To  To
P2R2 P2R2 00  To  To  To
P3R1 P3R1 11 0.0650.065  To  To
P3R2 P3R2 11 0.8450.845  To  To
P4R1P4R1 22 0.8550.855 0.9450.945  To
P4R2P4R2 33 0.2950.295 1.1251.125 1.2051.205
P5R1P5R1 22 0.9250.925 1.1951.195  To
P5R2P5R2 22 0.7850.785 1.3651.365  To
P6R1P6R1 33 0.1850.185 1.5151.515 2.0652.065
P6R2P6R2 22 0.4750.475 2.3852.385  To
【表16】【Table 16】
 To 驻点个数Number of stationary points 驻点位置1Stagnation position 1 驻点位置2Stagnation position 2
P1R1 P1R1 11 1.4151.415  To
P1R2 P1R2 11 0.4250.425  To
P2R1 P2R1 00  To  To
P2R2 P2R2 00  To  To
P3R1 P3R1 11 0.1150.115  To
P3R2 P3R2 00  To  To
P4R1 P4R1 00  To  To
P4R2 P4R2 11 0.5750.575  To
P5R1 P5R1 00  To  To
P5R2P5R2 22 1.3451.345 1.3751.375
P6R1 P6R1 11 0.3150.315  To
P6R2 P6R2 11 1.4751.475  To
图14、图15分别示出了波长为650nm、610nm、555nm、510nm、470nm的光经过第四实施方式的摄像光学镜头40后的轴向像差以及倍率色差示意图。图16则示出了，波长为555nm的光经过第四实施方式的摄像光学镜头40后的场曲及畸变示意图。14 and 15 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 40 of the fourth embodiment. FIG. 16 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 40 of the fourth embodiment.
以下表17按照上述条件式列出了本实施方式中对应各条件式的数值。显然，本实施方式的摄像光学系统满足上述的条件式。The following Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
在本实施方式中，所述摄像光学镜头的入瞳直径为0.942mm，全视场像高为2.91mm，对角线方向的视场角为120.00°，广角、超薄，其轴上、轴外色像差充分补正，且具有优秀的光学特征。In this embodiment, the entrance pupil diameter of the imaging optical lens is 0.942mm, the full-field image height is 2.91mm, and the diagonal viewing angle is 120.00°, wide-angle, ultra-thin, and its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
【表17】【Table 17】
参数及条件式Parameters and conditions 实施例1Example 1 实施例2Example 2 实施例3Example 3 实施例4Example 4
f1/ff1/f -3.18-3.18 -2.04-2.04 -2.81-2.81 -3.48-3.48
f2/ff2/f 1.661.66 1.601.60 1.261.26 1.771.77
(R11+R12)/(R11-R12)(R11+R12)/(R11-R12) 1.401.40 1.841.84 1.581.58 1.051.05
d9/d10d9/d10 7.457.45 15.1115.11 13.3813.38 15.2115.21
ff 1.8631.863 2.1842.184 2.1722.172 1.8661.866
f1f1 -5.927-5.927 -4.454-4.454 -6.113-6.113 -6.494-6.494
f2f2 3.0853.085 3.4903.490 2.7392.739 3.3083.308
f3f3 2.4462.446 5.6905.690 4.0404.040 2.4232.423
f4f4 -2.679-2.679 -13.198-13.198 -3.153-3.153 -2.710-2.710
f5f5 1.3301.330 1.4651.465 1.3011.301 1.2651.265
f6f6 -1.462-1.462 -1.657-1.657 -1.497-1.497 -1.290-1.290
f12f12 3.6843.684 10.28810.288 3.9873.987 3.9733.973
FnoFno 1.9801.980 2.1992.199 1.9691.969 1.9811.981
其中，Fno为摄像光学镜头的光圈F数。Among them, Fno is the aperture F number of the imaging optical lens.
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。A person of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present invention, and in practical applications, various changes can be made to them in form and details without departing from the spirit and spirit of the present invention. range.

Claims (10)

  1. 一种摄像光学镜头，其特征在于，所述摄像光学镜头，自物侧至像侧依序包含：具有负屈折力的第一透镜，具有正屈折力的第二透镜，具有正屈折力的第三透镜，具有负屈折力的第四透镜，具有正屈折力的第五透镜，具有负屈折力的第六透镜；An imaging optical lens, characterized in that, from the object side to the image side, the imaging optical lens includes a first lens with negative refractive power, a second lens with positive refractive power, and a first lens with positive refractive power. Three lenses, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power;
    所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第二透镜的焦距为f2，所述第六透镜物侧面的曲率半径为R11，所述第六透镜像侧面的曲率半径为R12，所述第五透镜的轴上厚度为d9，所述第五透镜的像侧面到所述第六透镜的物侧面的轴上距离为d10，且满足下列关系式：The focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the radius of curvature of the object side surface of the sixth lens is R11, and the sixth lens image side The radius of curvature of is R12, the on-axis thickness of the fifth lens is d9, the on-axis distance from the image side of the fifth lens to the object side of the sixth lens is d10, and the following relationship is satisfied:
    -3.50≤f1/f≤-2.00；-3.50≤f1/f≤-2.00;
    1.25≤f2/f≤1.80；1.25≤f2/f≤1.80;
    1.00≤(R11+R12)/(R11-R12)≤2.00；1.00≤(R11+R12)/(R11-R12)≤2.00;
    7.00≤d9/d10≤15.50。7.00≤d9/d10≤15.50.
  2. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，且满足下列关系式：The imaging optical lens of claim 1, wherein the radius of curvature of the object side surface of the fourth lens is R7, and the radius of curvature of the image side surface of the fourth lens is R8, and the following relationship is satisfied:
    0.05≤(R7+R8)/(R7-R8)≤5.00。0.05≤(R7+R8)/(R7-R8)≤5.00.
  3. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第二透镜的轴上厚度为d3，所述第二透镜的像侧面到所述第三透镜的物侧面的轴上距离为d4，且满足下列关系式：The imaging optical lens of claim 1, wherein the on-axis thickness of the second lens is d3, and the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4 , And satisfy the following relationship:
    1.50≤d3/d4≤4.50。1.50≤d3/d4≤4.50.
  4. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第一透镜物侧面的曲率半径为R1，所述第一透镜像侧面的曲率半径为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：The imaging optical lens of claim 1, wherein the curvature radius of the object side surface of the first lens is R1, the curvature radius of the image side surface of the first lens is R2, and the on-axis thickness of the first lens Is d1, the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
    -3.46≤(R1+R2)/(R1-R2)≤1.45；-3.46≤(R1+R2)/(R1-R2)≤1.45;
    0.03≤d1/TTL≤0.24。0.03≤d1/TTL≤0.24.
  5. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为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：The imaging optical lens of claim 1, wherein the curvature radius of the object side surface of the second lens is R3, the curvature radius of the image side surface of the second lens is R4, and the on-axis thickness of the second lens Is d3, the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
    -3.21≤(R3+R4)/(R3-R4)≤-0.59；-3.21≤(R3+R4)/(R3-R4)≤-0.59;
    0.03≤d3/TTL≤0.14。0.03≤d3/TTL≤0.14.
  6. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第三透镜的焦距为f3，所述第三透镜物侧面的曲率半径为R5，所述第三透镜像侧面的曲率半径为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：The imaging optical lens of claim 1, wherein the focal length of the third lens is f3, the radius of curvature of the object side of the third lens is R5, and the radius of curvature of the image side of the third lens is R6 , The axial thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
    0.65≤f3/f≤3.91；0.65≤f3/f≤3.91;
    0.41≤(R5+R6)/(R5-R6)≤2.17；0.41≤(R5+R6)/(R5-R6)≤2.17;
    0.04≤d5/TTL≤0.17。0.04≤d5/TTL≤0.17.
  7. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第四透镜的焦距为f4，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：The imaging optical lens of claim 1, wherein the focal length of the fourth lens is f4, the axial thickness of the fourth lens is d7, and the total optical length of the imaging optical lens is TTL, and satisfies The following relationship:
    -12.09≤f4/f≤-0.96；-12.09≤f4/f≤-0.96;
    0.02≤d7/TTL≤0.07。0.02≤d7/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，所述第五透镜的焦距为f5，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为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：The imaging optical lens of claim 1, wherein the focal length of the fifth lens is f5, the radius of curvature of the object side of the fifth lens is R9, and the radius of curvature of the image side of the fifth lens is R10 , The axial thickness of the fifth lens is d9, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
    0.30≤f5/f≤1.07；0.30≤f5/f≤1.07;
    0.58≤(R9+R10)/(R9-R10)≤2.53；0.58≤(R9+R10)/(R9-R10)≤2.53;
    0.05≤d9/TTL≤0.33。0.05≤d9/TTL≤0.33.
  9. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第六透镜的焦距为f6，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：The imaging optical lens according to claim 1, wherein the focal length of the sixth lens is f6, the axial thickness of the sixth lens is d11, and the total optical length of the imaging optical lens is TTL, and satisfies The following relationship:
    -1.57≤f6/f≤-0.46；-1.57≤f6/f≤-0.46;
    0.03≤d11/TTL≤0.12。0.03≤d11/TTL≤0.12.
  10. 根据权利要求1所述的摄像光学镜头，其特征在于，所述摄像光学镜头的像高为IH，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：The imaging optical lens of claim 1, wherein the image height of the imaging optical lens is IH, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
    TTL/IH≤2.20。TTL/IH≤2.20.
PCT/CN2019/125491 2019-12-16 2019-12-16 Camera optical lens WO2021119887A1 (en)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
CN102621667A (en) * 2011-01-27 2012-08-01 株式会社腾龙 Wide-angle monofocal lens
JP2019028342A (en) * 2017-08-01 2019-02-21 日本電産コパル株式会社 Imaging lens, and imaging device
KR20190080526A (en) * 2017-12-28 2019-07-08 오필름코리아(주) Optical imaging system
CN110297312A (en) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 Camera optical camera lens
CN110297314A (en) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 Camera optical camera lens
CN110297315A (en) * 2019-06-30 2019-10-01 瑞声科技(新加坡)有限公司 Camera optical camera lens
CN111142218A (en) * 2019-12-16 2020-05-12 瑞声通讯科技(常州)有限公司 Image pickup optical lens

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102621667A (en) * 2011-01-27 2012-08-01 株式会社腾龙 Wide-angle monofocal lens
JP2019028342A (en) * 2017-08-01 2019-02-21 日本電産コパル株式会社 Imaging lens, and imaging device
KR20190080526A (en) * 2017-12-28 2019-07-08 오필름코리아(주) Optical imaging system
CN110297312A (en) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 Camera optical camera lens
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CN110297315A (en) * 2019-06-30 2019-10-01 瑞声科技(新加坡)有限公司 Camera optical camera lens
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