WO2021109077A1 - Camera optical lens - Google Patents

Camera optical lens Download PDF

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Publication number
WO2021109077A1
WO2021109077A1 PCT/CN2019/123312 CN2019123312W WO2021109077A1 WO 2021109077 A1 WO2021109077 A1 WO 2021109077A1 CN 2019123312 W CN2019123312 W CN 2019123312W WO 2021109077 A1 WO2021109077 A1 WO 2021109077A1
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Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/123312
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French (fr)
Chinese (zh)
Inventor
马力
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/123312 priority Critical patent/WO2021109077A1/en
Publication of WO2021109077A1 publication Critical patent/WO2021109077A1/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

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 coupled devices (CCD) or complementary metal oxide semiconductor devices (Complementary Metal).
  • CCD photosensitive coupled devices
  • 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 that can meet the requirements of ultra-thin and wide-angle while obtaining high imaging performance.
  • 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 having a positive refractive power, and a second lens having a negative refractive power.
  • the focal length of the imaging optical lens is f
  • the focal length of the fifth lens is f5
  • the Abbe number of the first lens is v1
  • the Abbe number of the second lens is v2
  • the axis of the third lens The upper thickness is d5, the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, and satisfies the following relationship: -15.00 ⁇ f5/f ⁇ -6.00; 2.80 ⁇ v1/v2 ⁇ 4.00; 5.00 ⁇ d5/d6 ⁇ 15.00.
  • the radius of curvature of the object side surface of the second lens is R3, and the radius of curvature of the image side surface of the second lens is R4, and the following relationship is satisfied: 8.00 ⁇ (R3+R4)/(R3-R4) ⁇ 20.00 .
  • 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 following relationship is satisfied: -0.70 ⁇ (R11+R12)/(R11-R12) ⁇ 0.00.
  • the focal length of the first lens is f1
  • the radius of curvature of the object side of the first lens is R1
  • the radius of curvature of the image side of the first lens is R2
  • 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: 0.56 ⁇ f1/f ⁇ 1.84; -3.89 ⁇ (R1+R2)/(R1-R2) ⁇ -1.17; 0.07 ⁇ d1/TTL ⁇ 0.24.
  • the focal length of the second lens is f2
  • the axial thickness of the second lens is d3
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -29.74 ⁇ f2/f ⁇ - 3.67; 0.02 ⁇ d3/TTL ⁇ 0.06.
  • 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: -6.90 ⁇ f3/f ⁇ -1.65; 0.39 ⁇ (R5+R6)/(R5-R6) ⁇ 2.54; 0.02 ⁇ d5/TTL ⁇ 0.07.
  • the focal length of the fourth lens is f4
  • the radius of curvature of the object side of the fourth lens is R7
  • the radius of curvature of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 1.08 ⁇ f4/f ⁇ 3.88; 0.00 ⁇ (R7+R8)/(R7-R8) ⁇ 0.19; 0.04 ⁇ d7/TTL ⁇ 0.13.
  • the radius of curvature of the object side surface of the fifth lens is R9
  • the radius of curvature of the image side surface 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 satisfies the following relationship: 3.98 ⁇ (R9+R10)/(R9-R10) ⁇ 22.52; 0.02 ⁇ d9/TTL ⁇ 0.08.
  • the focal length of the sixth lens is f6, the on-axis thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.48 ⁇ f6/f ⁇ 1.57; 0.05 ⁇ d11/TTL ⁇ 0.16.
  • the focal length of the seventh lens is f7
  • the radius of curvature of the object side of the seventh lens is R13
  • the radius of curvature of the image side of the seventh lens is R14
  • the axial thickness of the seventh lens is d13
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -1.37 ⁇ f7/f ⁇ -0.42; 0.06 ⁇ (R13+R14)/(R13-R14) ⁇ 0.36; 0.03 ⁇ d13/TTL ⁇ 0.10.
  • the beneficial effect of the present invention is that the imaging optical lens according to the present invention has excellent optical characteristics, meets the requirements of ultra-thin and wide-angle, 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 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. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes seven lenses. Specifically, the imaging optical lens 10 includes in order 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, and a sixth lens. Lens L6 and seventh lens L7.
  • An optical element such as an optical filter GF may be provided between the seventh lens L7 and the image plane Si.
  • the first lens L1 has positive refractive power
  • the second lens L2 has negative refractive power
  • the third lens L3 has negative refractive power
  • the fourth lens L4 has positive refractive power
  • the fifth lens L5 has negative refractive power
  • the sixth lens L6 has Positive refractive power
  • seventh lens L7 has negative refractive power.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fifth lens L5 is f5
  • the reasonable distribution of the optical power makes the system have better imaging quality and comparison.
  • Low sensitivity Preferably, -14.92 ⁇ f5/f ⁇ -6.00 is satisfied.
  • the Abbe number of the first lens as v1
  • the Abbe number of the second lens as v2, 2.80 ⁇ v1/v2 ⁇ 4.00, within this range, it is more conducive to the development of ultra-thinness, and is conducive to image correction. difference.
  • the on-axis thickness of the third lens is defined as d5, and the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, 5.00 ⁇ d5/d6 ⁇ 15.00, which is within the scope of the conditional expression It helps to compress the total length of the optical system and achieve an ultra-thin effect.
  • 5.00 ⁇ d5/d6 ⁇ 14.71 is satisfied.
  • the imaging optical lens 10 of the present invention When the focal length of the imaging optical lens 10 of the present invention, the focal length of each lens, the Abbe number of the related lens, the on-axis distance from the image side of the related lens to the object side, and the on-axis thickness satisfy the above-mentioned relational expressions, the imaging optical lens can be made 10 has high performance and meets the design requirements of low TTL.
  • 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, 8.00 ⁇ (R3+R4)/(R3-R4) ⁇ 20.00, which specifies the second lens L2
  • 8.01 ⁇ (R3+R4)/(R3-R4) ⁇ 19.98 is satisfied.
  • the curvature radius of the object side surface of the sixth lens L6 is R11
  • the curvature radius of the image side surface of the sixth lens L6 is R12, -0.70 ⁇ (R11+R12)/(R11-R12) ⁇ 0.00, which specifies the sixth lens
  • the focal length of the first lens L1 is f1, 0.56 ⁇ f1/f ⁇ 1.84, which specifies the ratio of the focal length of the first lens L1 to the overall focal length.
  • the first lens has an appropriate positive refractive power, which is beneficial to reduce system aberrations, and at the same time, is beneficial to the development of ultra-thin and wide-angle lenses.
  • 0.89 ⁇ f1/f ⁇ 1.47 is satisfied.
  • the curvature radius R1 of the object side surface of the first lens L1 and the curvature radius R2 of the image side surface of the first lens L1 satisfy the following relationship: -3.89 ⁇ (R1+R2)/(R1-R2) ⁇ -1.17, reasonable control of the first lens
  • the shape of the lens enables the first lens to effectively correct the spherical aberration of the system.
  • it satisfies -2.43 ⁇ (R1+R2)/(R1-R2) ⁇ -1.46.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.07 ⁇ d1/TTL ⁇ 0.24, which is beneficial to realize ultra-thinness.
  • 0.12 ⁇ d1/TTL ⁇ 0.19 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the second lens L2 is f2 which satisfies the following relationship: -29.74 ⁇ f2/f ⁇ -3.67.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relationship: 0.02 ⁇ d3/TTL ⁇ 0.06, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d3/TTL ⁇ 0.05 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the third lens L3 is f3
  • the following relationship is satisfied: -6.90 ⁇ f3/f ⁇ -1.65.
  • the system has better imaging quality and Lower sensitivity.
  • -4.31 ⁇ f3/f ⁇ -2.07 is satisfied.
  • the curvature radius R5 of the object side surface of the third lens L3 and the curvature radius R6 of the image side surface of the third lens L3 satisfy the following relationship: 0.39 ⁇ (R5+R6)/(R5-R6) ⁇ 2.54, which can effectively control the third lens L3
  • the shape of, within the range specified by the conditional formula, can ease the degree of deflection of light passing through the lens and effectively reduce aberrations.
  • 0.62 ⁇ (R5+R6)/(R5-R6) ⁇ 2.03 is satisfied.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.02 ⁇ d5/TTL ⁇ 0.07, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d5/TTL ⁇ 0.06 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fourth lens L4 is f4, which satisfies the following relationship: 1.08 ⁇ f4/f ⁇ 3.88.
  • the system has better imaging quality and lower Sensitivity.
  • 1.74 ⁇ f4/f ⁇ 3.11 is satisfied.
  • the curvature radius R7 of the object side surface of the fourth lens L4 and the curvature radius R8 of the image side surface of the fourth lens L4 satisfy the following relationship: 0.00 ⁇ (R7+R8)/(R7-R8) ⁇ 0.19, the fourth lens L4 is specified
  • the shape is within the range, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • it satisfies 0.01 ⁇ (R7+R8)/(R7-R8) ⁇ 0.15.
  • the on-axis thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.04 ⁇ d7/TTL ⁇ 0.13, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d7/TTL ⁇ 0.11 is satisfied.
  • the curvature radius R9 of the object side surface of the fifth lens L5 and the curvature radius R10 of the image side surface of the fifth lens L5 satisfy the following relationship: 3.98 ⁇ (R9+R10)/(R9-R10) ⁇ 22.52, and the fifth lens L5 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • 6.37 ⁇ (R9+R10)/(R9-R10) ⁇ 18.01 is satisfied.
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relationship: 0.02 ⁇ d9/TTL ⁇ 0.08, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d9/TTL ⁇ 0.07 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the sixth lens L6 is f6, which satisfies the following relationship: 0.48 ⁇ f6/f ⁇ 1.57.
  • the system has better imaging quality and lower Sensitivity.
  • 0.77 ⁇ f6/f ⁇ 1.26 is satisfied.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.05 ⁇ d11/TTL ⁇ 0.16, which is beneficial to realize ultra-thinness.
  • 0.08 ⁇ d11/TTL ⁇ 0.13 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the seventh lens L7 is f7, which satisfies the following relationship: -1.37 ⁇ f7/f ⁇ -0.42.
  • the reasonable distribution of the optical power enables the system to have better imaging quality and comparison. Low sensitivity.
  • the curvature radius R13 of the object side surface of the seventh lens L7 and the curvature radius R14 of the image side surface of the seventh lens L7 satisfy the following relationship: 0.06 ⁇ (R13+R14)/(R13-R14) ⁇ 0.36, the seventh lens L6 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • 0.09 ⁇ (R13+R14)/(R13-R14) ⁇ 0.28 is satisfied.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relationship: 0.03 ⁇ d13/TTL ⁇ 0.10, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d13/TTL ⁇ 0.08 is satisfied.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 7.37 mm, which is beneficial to realize ultra-thinness.
  • the total optical length TTL is less than or equal to 7.04 mm.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 1.46. Large aperture, good imaging performance. Preferably, the aperture F number is less than or equal to 1.43.
  • the overall optical length TTL of the overall imaging optical lens 10 can be shortened as much as possible, and the characteristics of miniaturization can be maintained.
  • 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 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;
  • R13 the radius of curvature of the object side surface of the seventh lens L7;
  • R14 the radius of curvature of the image side surface of the seventh lens L7;
  • 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 seventh lens L7;
  • d14 the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF;
  • d15 the axial thickness of the optical filter GF
  • d16 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;
  • nd7 the refractive index of the d-line of the seventh lens L7;
  • 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 image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6,
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, 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. 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 meridian direction. song.
  • Table 13 shows the values corresponding to the various numerical 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 3.73mm
  • the full-field image height is 4.636mm
  • the diagonal field angle is 80.00°
  • wide-angle ultra-thin
  • its axis and axis 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 having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 430 nm pass 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 3.67mm
  • the full-field image height is 4.636mm
  • the diagonal field angle is 80.00°
  • wide-angle ultra-thin
  • 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, 470 nm, and 430 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.
  • the entrance pupil diameter of the imaging optical lens is 3.610mm
  • the full-field image height is 4.636mm
  • the diagonal field angle is 80.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 f5/f -6.009 -6.200 -14.848 v1/v2 3.970 2.877 3.745 d5/d6 5.085 10.700 14.429 f 5.409 5.322 5.235 f1 6.017 6.045 6.432 f2 -30.501 -29.337 -77.848 f3 -18.648 -15.535 -12.989 f4 14.003 11.546 11.865 f5 -32.505 -32.994 -77.731 f6 5.211 5.585 5.473 f7 -3.413 -3.638 -3.503 f12 6.933 7.031 6.712 Fno 1.450 1.450 1.430

Abstract

The present invention relates to the field of optical lenses, and discloses a camera optical lens, which comprises the following in sequence from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; moreover, the following relational expressions are satisfied: -15.00≤f5/f≤-6.00; 2.80≤v1/v2≤4.00; and 5.00≤d5/d6≤15.00. The camera optical lens in the present invention features good optical properties, such as having a large aperture, having a wide angle and being ultra thin.

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-OxideSemiconductor 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 coupled devices (CCD) or complementary metal oxide semiconductor devices (Complementary Metal). -OxideSemiconductor Sensor, CMOS Sensor), and due to the improvement 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 an ultra-thin wide-angle camera lens with excellent optical characteristics.
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，能在获得高成像性能的同时，满足超薄化和广角化的要求。In view of the above-mentioned problems, the object of the present invention is to provide an imaging optical lens that can meet the requirements of ultra-thin and wide-angle while obtaining high imaging performance.
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：具有正屈折力的第一透镜，具有负屈折力的第二透镜，具有负屈折力的第三透镜，具有正屈折力的第四透镜，具有负屈折力的第五透镜，具有正屈折力的第六透镜，以及具有负屈折力的第七透镜；所述摄像光学镜头的焦距为f，所述第五透镜的焦距为f5，所述第一透镜的阿贝数为v1，所述第二透镜的阿贝数为v2，所述第三透镜的轴上厚度为d5，所述第三透镜的像侧面到所述第四透镜的物侧面的轴上距离为d6，且满足下列关系式：-15.00≤f5/f≤-6.00；2.80≤v1/v2≤4.00；5.00≤d5/d6≤15.00。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 having a positive refractive power, and a second lens having a negative refractive power. Two lenses, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; so The focal length of the imaging optical lens is f, the focal length of the fifth lens is f5, the Abbe number of the first lens is v1, the Abbe number of the second lens is v2, and the axis of the third lens The upper thickness is d5, the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, and satisfies the following relationship: -15.00≤f5/f≤-6.00; 2.80≤v1/v2 ≤4.00; 5.00≤d5/d6≤15.00.
优选的，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，且满足下列关系式：8.00≤(R3+R4)/(R3-R4)≤ 20.00。Preferably, the radius of curvature of the object side surface of the second lens is R3, and the radius of curvature of the image side surface of the second lens is R4, and the following relationship is satisfied: 8.00≤(R3+R4)/(R3-R4)≤ 20.00 .
优选的，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，且满足下列关系式：-0.70≤(R11+R12)/(R11-R12)≤0.00。Preferably, the radius of curvature of the object side surface of the sixth lens is R11, and the radius of curvature of the image side surface of the sixth lens is R12, and the following relationship is satisfied: -0.70≤(R11+R12)/(R11-R12)≤ 0.00.
优选的，所述第一透镜的焦距为f1，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：0.56≤f1/f≤1.84；-3.89≤(R1+R2)/(R1-R2)≤-1.17；0.07≤d1/TTL≤0.24。Preferably, the focal length of the first lens is f1, the radius of curvature of the object side of the first lens is R1, the radius of curvature of the image side 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: 0.56≤f1/f≤1.84; -3.89≤(R1+R2)/(R1-R2)≤-1.17; 0.07≤d1/TTL≤ 0.24.
优选的，所述第二透镜的焦距为f2，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：-29.74≤f2/f≤-3.67；0.02≤d3/TTL≤0.06。Preferably, the focal length of the second lens is f2, the axial thickness of the second lens is d3, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -29.74≤f2/f≤- 3.67; 0.02≤d3/TTL≤0.06.
优选的，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：-6.90≤f3/f≤-1.65；0.39≤(R5+R6)/(R5-R6)≤2.54；0.02≤d5/TTL≤0.07。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: -6.90≤f3/f≤-1.65; 0.39≤(R5+R6)/(R5-R6)≤2.54; 0.02≤d5/TTL≤ 0.07.
优选的，所述第四透镜的焦距为f4，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，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：1.08≤f4/f≤3.88；0.00≤(R7+R8)/(R7-R8)≤0.19；0.04≤d7/TTL≤0.13。Preferably, the focal length of the fourth lens is f4, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7 , The total optical length of the camera optical lens is TTL, and satisfies the following relationship: 1.08≤f4/f≤3.88; 0.00≤(R7+R8)/(R7-R8)≤0.19; 0.04≤d7/TTL≤0.13.
优选的，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：3.98≤(R9+R10)/(R9-R10)≤22.52；0.02≤d9/TTL≤0.08。Preferably, the radius of curvature of the object side surface of the fifth lens is R9, the radius of curvature of the image side surface of the fifth lens is R10, the axial thickness of the fifth lens is d9, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: 3.98≤(R9+R10)/(R9-R10)≤22.52; 0.02≤d9/TTL≤0.08.
优选的，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：0.48≤f6/f≤1.57；0.05≤d11/TTL≤0.16。Preferably, the focal length of the sixth lens is f6, the on-axis thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.48≤f6/f≤1.57; 0.05≤d11/TTL≤0.16.
优选的，所述第七透镜的焦距为f7，所述第七透镜物侧面的曲率半径为R13，所述第七透镜像侧面的曲率半径为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：-1.37≤f7/f≤-0.42；0.06≤(R13+R14)/(R13-R14)≤0.36；0.03≤d13/TTL≤0.10。Preferably, the focal length of the seventh lens is f7, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the axial thickness of the seventh lens is d13 , The total optical length of the camera optical lens is TTL, and satisfies the following relationship: -1.37≤f7/f≤-0.42; 0.06≤(R13+R14)/(R13-R14)≤0.36; 0.03≤d13/TTL≤ 0.10.
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，满足超薄化和广角化的要求，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 effect of the present invention is that the imaging optical lens according to the present invention has excellent optical characteristics, meets the requirements of ultra-thin and wide-angle, and is especially suitable for mobile phone camera lens assemblies composed of high-pixel CCD, CMOS and other imaging elements. And WEB camera lens.
附图说明Description of the drawings
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.
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包括七个透镜。具体的，所述摄像光学镜头10，由物侧至像侧依序包括：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以及第七透镜L7。第七透镜L7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 seven lenses. Specifically, the imaging optical lens 10 includes in order 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, and a sixth lens. Lens L6 and seventh lens L7. An optical element such as an optical filter GF may be provided between the seventh lens L7 and the image plane Si.
第一透镜L1具有正屈折力，第二透镜L2具有负屈折力，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具有正屈折力，以及第七透镜L7具有负屈折力。The first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has negative refractive power, and the sixth lens L6 has Positive refractive power, and seventh lens L7 has negative refractive power.
定义整体摄像光学镜头10的焦距为f，所述第五透镜L5的焦距为f5，-15.00≤f5/f≤-6.00，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-14.92≤f5/f≤-6.00。Define the focal length of the overall imaging optical lens 10 as f, the focal length of the fifth lens L5 is f5, -15.00≤f5/f≤-6.00, and the reasonable distribution of the optical power makes the system have better imaging quality and comparison. Low sensitivity. Preferably, -14.92≤f5/f≤-6.00 is satisfied.
定义所述第一透镜的阿贝数为v1，所述第二透镜的阿贝数为v2，2.80≤v1/v2≤4.00，在此范围内更有利于向超薄化发展，同时利于修正像差。优选地，2.84≤v1/v2≤3.99。Define the Abbe number of the first lens as v1, and the Abbe number of the second lens as v2, 2.80≤v1/v2≤4.00, within this range, it is more conducive to the development of ultra-thinness, and is conducive to image correction. difference. Preferably, 2.84≤v1/v2≤3.99.
定义所述第三透镜的轴上厚度为d5，所述第三透镜的像侧面到所述第四透镜的物侧面的轴上距离为d6，5.00≤d5/d6≤15.00，在条件式范围内有助于压缩光学系统总长，实现超薄化效果。优选地，满足5.00≤d5/d6≤14.71。The on-axis thickness of the third lens is defined as d5, and the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, 5.00≤d5/d6≤15.00, which is within the scope of the conditional expression It helps to compress the total length of the optical system and achieve an ultra-thin effect. Preferably, 5.00≤d5/d6≤14.71 is satisfied.
当本发明所述摄像光学镜头10的焦距、各透镜的焦距、相关透镜的阿贝数、相关透镜像侧面到物侧面的轴上距离、轴上厚度满足上述关系式时，可以使摄像光学镜头10具有高性能，且满足低TTL的设计需求。When the focal length of the imaging optical lens 10 of the present invention, the focal length of each lens, the Abbe number of the related lens, the on-axis distance from the image side of the related lens to the object side, and the on-axis thickness satisfy the above-mentioned relational expressions, the imaging optical lens can be made 10 has high performance and meets the design requirements of low TTL.
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R4，8.00≤(R3+R4)/(R3-R4)≤20.00，规定了第二透镜L2的形状，在条件式规定范围内，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8.01≤(R3+R4)/(R3-R4)≤19.98。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, 8.00≤(R3+R4)/(R3-R4)≤20.00, which specifies the second lens L2 The shape of, within the range of the conditional formula, as the lens develops towards ultra-thin and wide-angle, it is helpful to correct the problem of axial chromatic aberration. Preferably, 8.01≤(R3+R4)/(R3-R4)≤19.98 is satisfied.
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，-0.70≤(R11+R12)/(R11-R12)≤0.00，规定了第六透镜L6的形状，在范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。The curvature radius of the object side surface of the sixth lens L6 is R11, and the curvature radius of the image side surface of the sixth lens L6 is R12, -0.70≤(R11+R12)/(R11-R12)≤0.00, which specifies the sixth lens When the shape of L6 is within the range, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
所述第一透镜L1的焦距为f1，0.56≤f1/f≤1.84，规定了第一透镜L1的焦距与整体焦距的比值。在规定的范围内时，第一透镜具有适当的正屈折力，有利于减小系统像差，同时有利于镜头向超薄化、广角化发展。优选地，满足0.89≤f1/f≤1.47。The focal length of the first lens L1 is f1, 0.56≤f1/f≤1.84, which specifies the ratio of the focal length of the first lens L1 to the overall focal length. When within the specified range, the first lens has an appropriate positive refractive power, which is beneficial to reduce system aberrations, and at the same time, is beneficial to the development of ultra-thin and wide-angle lenses. Preferably, 0.89≤f1/f≤1.47 is satisfied.
第一透镜L1物侧面的曲率半径R1，第一透镜L1像侧面的曲率半径R2，满足下列关系式：-3.89≤(R1+R2)/(R1-R2)≤-1.17，合理控制第一透镜的形状，使得第一透镜能够有效地校正系统球差。优选地，满足-2.43≤(R1+R2)/(R1-R2)≤-1.46。The curvature radius R1 of the object side surface of the first lens L1 and the curvature radius R2 of the image side surface of the first lens L1 satisfy the following relationship: -3.89≤(R1+R2)/(R1-R2)≤-1.17, reasonable control of the first lens The shape of the lens enables the first lens to effectively correct the spherical aberration of the system. Preferably, it satisfies -2.43≤(R1+R2)/(R1-R2)≤-1.46.
第一透镜L1的轴上厚度为d1，摄像光学镜头的光学总长为TTL，满足下列关系式：0.07≤d1/TTL≤0.24，有利于实现超薄化。优选地，满足0.12≤d1/TTL≤0.19。The axial thickness of the first lens L1 is d1, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.07≤d1/TTL≤0.24, which is beneficial to realize ultra-thinness. Preferably, 0.12≤d1/TTL≤0.19 is satisfied.
整体摄像光学镜头10的焦距为f，第二透镜L2焦距f2，满足下列关系式：-29.74≤f2/f≤-3.67，通过将第二透镜L2的负光焦度控制在合 理范围，有利于矫正光学系统的像差。优选地，满足-18.59≤f2/f≤-4.59。The focal length of the overall imaging optical lens 10 is f, and the focal length of the second lens L2 is f2, which satisfies the following relationship: -29.74≤f2/f≤-3.67. By controlling the negative refractive power of the second lens L2 in a reasonable range, it is beneficial to Correct the aberration of the optical system. Preferably, -18.59≤f2/f≤-4.59 is satisfied.
第二透镜L2的轴上厚度为d3，满足下列关系式：0.02≤d3/TTL≤0.06，有利于实现超薄化。优选地，满足0.03≤d3/TTL≤0.05。The on-axis thickness of the second lens L2 is d3, which satisfies the following relationship: 0.02≤d3/TTL≤0.06, which is beneficial to realize ultra-thinness. Preferably, 0.03≤d3/TTL≤0.05 is satisfied.
整体摄像光学镜头10的焦距为f，第三透镜L3焦距f3，以及满足下列关系式：-6.90≤f3/f≤-1.65，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-4.31≤f3/f≤-2.07。The focal length of the overall imaging optical lens 10 is f, the focal length of the third lens L3 is f3, and the following relationship is satisfied: -6.90≤f3/f≤-1.65. Through the reasonable distribution of optical power, the system has better imaging quality and Lower sensitivity. Preferably, -4.31≤f3/f≤-2.07 is satisfied.
第三透镜L3物侧面的曲率半径R5，第三透镜L3像侧面的曲率半径R6，满足下列关系式：0.39≤(R5+R6)/(R5-R6)≤2.54，可有效控制第三透镜L3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0.62≤(R5+R6)/(R5-R6)≤2.03。The curvature radius R5 of the object side surface of the third lens L3 and the curvature radius R6 of the image side surface of the third lens L3 satisfy the following relationship: 0.39≤(R5+R6)/(R5-R6)≤2.54, which can effectively control the third lens L3 The shape of, within the range specified by the conditional formula, can ease the degree of deflection of light passing through the lens and effectively reduce aberrations. Preferably, 0.62≤(R5+R6)/(R5-R6)≤2.03 is satisfied.
第三透镜L3的轴上厚度为d5，满足下列关系式：0.02≤d5/TTL≤0.07，有利于实现超薄化。优选地，满足0.03≤d5/TTL≤0.06。The on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.02≤d5/TTL≤0.07, which is beneficial to realize ultra-thinness. Preferably, 0.03≤d5/TTL≤0.06 is satisfied.
整体摄像光学镜头10的焦距为f，第四透镜L4焦距f4，满足下列关系式：1.08≤f4/f≤3.88，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1.74≤f4/f≤3.11。The focal length of the overall imaging optical lens 10 is f, and the focal length of the fourth lens L4 is f4, which satisfies the following relationship: 1.08≤f4/f≤3.88. Through the reasonable distribution of optical power, the system has better imaging quality and lower Sensitivity. Preferably, 1.74≤f4/f≤3.11 is satisfied.
第四透镜L4物侧面的曲率半径R7，第四透镜L4像侧面的曲率半径R8，满足下列关系式：0.00≤(R7+R8)/(R7-R8)≤0.19，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0.01≤(R7+R8)/(R7-R8)≤0.15。The curvature radius R7 of the object side surface of the fourth lens L4 and the curvature radius R8 of the image side surface of the fourth lens L4 satisfy the following relationship: 0.00≤(R7+R8)/(R7-R8)≤0.19, the fourth lens L4 is specified When the shape is within the range, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view. Preferably, it satisfies 0.01≤(R7+R8)/(R7-R8)≤0.15.
第四透镜L4的轴上厚度为d7，满足下列关系式：0.04≤d7/TTL≤0.13，有利于实现超薄化。优选地，满足0.07≤d7/TTL≤0.11。The on-axis thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.04≤d7/TTL≤0.13, which is beneficial to realize ultra-thinness. Preferably, 0.07≤d7/TTL≤0.11 is satisfied.
第五透镜L5物侧面的曲率半径R9，第五透镜L5像侧面的曲率半径R10，满足下列关系式：3.98≤(R9+R10)/(R9-R10)≤22.52，规定的是第五透镜L5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6.37≤(R9+R10)/(R9-R10)≤18.01。The curvature radius R9 of the object side surface of the fifth lens L5 and the curvature radius R10 of the image side surface of the fifth lens L5 satisfy the following relationship: 3.98≤(R9+R10)/(R9-R10)≤22.52, and the fifth lens L5 is specified When the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view. Preferably, 6.37≤(R9+R10)/(R9-R10)≤18.01 is satisfied.
第五透镜L5的轴上厚度为d9，满足下列关系式：0.02≤d9/TTL≤0.08，有利于实现超薄化。优选地，满足0.04≤d9/TTL≤0.07。The on-axis thickness of the fifth lens L5 is d9, which satisfies the following relationship: 0.02≤d9/TTL≤0.08, which is beneficial to realize ultra-thinness. Preferably, 0.04≤d9/TTL≤0.07 is satisfied.
整体摄像光学镜头10的焦距为f，第六透镜L6焦距f6，满足下列关系式：0.48≤f6/f≤1.57，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0.77≤f6/f≤1.26。The focal length of the overall imaging optical lens 10 is f, and the focal length of the sixth lens L6 is f6, which satisfies the following relationship: 0.48≤f6/f≤1.57. Through the reasonable distribution of optical power, the system has better imaging quality and lower Sensitivity. Preferably, 0.77≤f6/f≤1.26 is satisfied.
第六透镜L6的轴上厚度为d11，满足下列关系式：0.05≤d11/TTL≤0.16，有利于实现超薄化。优选地，满足0.08≤d11/TTL≤0.13。The on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.05≤d11/TTL≤0.16, which is beneficial to realize ultra-thinness. Preferably, 0.08≤d11/TTL≤0.13 is satisfied.
整体摄像光学镜头10的焦距为f，第七透镜L7焦距f7，满足下列关系式：-1.37≤f7/f≤-0.42，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-0.85≤f7/f≤-0.53。The focal length of the overall imaging optical lens 10 is f, and the focal length of the seventh lens L7 is f7, which satisfies the following relationship: -1.37≤f7/f≤-0.42. The reasonable distribution of the optical power enables the system to have better imaging quality and comparison. Low sensitivity. Preferably, -0.85≤f7/f≤-0.53 is satisfied.
第七透镜L7物侧面的曲率半径R13，第七透镜L7像侧面的曲率半径R14，满足下列关系式：0.06≤(R13+R14)/(R13-R14)≤0.36，规定的是第七透镜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0.09≤(R13+R14)/(R13-R14)≤0.28。The curvature radius R13 of the object side surface of the seventh lens L7 and the curvature radius R14 of the image side surface of the seventh lens L7 satisfy the following relationship: 0.06≤(R13+R14)/(R13-R14)≤0.36, the seventh lens L6 is specified When the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view. Preferably, 0.09≤(R13+R14)/(R13-R14)≤0.28 is satisfied.
第七透镜L7的轴上厚度为d13，满足下列关系式：0.03≤d13/TTL≤0.10，有利于实现超薄化。优选地，满足0.05≤d13/TTL≤0.08。The on-axis thickness of the seventh lens L7 is d13, which satisfies the following relationship: 0.03≤d13/TTL≤0.10, which is beneficial to realize ultra-thinness. Preferably, 0.05≤d13/TTL≤0.08 is satisfied.
本实施方式中，摄像光学镜头10的光学总长TTL小于或等于7.37毫米，有利于实现超薄化。优选地，光学总长TTL小于或等于7.04毫米。In this embodiment, the total optical length TTL of the imaging optical lens 10 is less than or equal to 7.37 mm, which is beneficial to realize ultra-thinness. Preferably, the total optical length TTL is less than or equal to 7.04 mm.
本实施方式中，摄像光学镜头10的光圈F数小于或等于1.46。大光圈，成像性能好。优选地，光圈F数小于或等于1.43。In this embodiment, the aperture F number of the imaging optical lens 10 is less than or equal to 1.46. Large aperture, good imaging performance. Preferably, the aperture F number is less than or equal to 1.43.
如此设计，能够使得整体摄像光学镜头10的光学总长TTL尽量变短，维持小型化的特性。With such a design, the overall optical length TTL of the overall imaging optical lens 10 can be shortened as much as possible, and the characteristics of miniaturization can be maintained.
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：光学长度(第1透镜L1的物侧面到成像面的轴上距离)，单位为mm；TTL: 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 PCTCN2019123312-appb-000001
Figure PCTCN2019123312-appb-000001
Figure PCTCN2019123312-appb-000002
Figure PCTCN2019123312-appb-000002
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;
R13：第七透镜L7的物侧面的曲率半径；R13: the radius of curvature of the object side surface of the seventh lens L7;
R14：第七透镜L7的像侧面的曲率半径；R14: the radius of curvature of the image side surface of the seventh lens L7;
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的像侧面到第七透镜L7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 seventh lens L7;
d13：第七透镜L7的轴上厚度；d13: the on-axis thickness of the seventh lens L7;
d14：第七透镜L7的像侧面到光学过滤片GF的物侧面的轴上距离；d14: the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF;
d15：光学过滤片GF的轴上厚度；d15: the axial thickness of the optical filter GF;
d16：光学过滤片GF的像侧面到像面的轴上距离；d16: 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;
nd7：第七透镜L7的d线的折射率；nd7: the refractive index of the d-line of the seventh lens L7;
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;
v7：第七透镜L7的阿贝数；v7: Abbe number of the seventh lens L7;
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 PCTCN2019123312-appb-000003
Figure PCTCN2019123312-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。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，P7R1、P7R2分别代表第七透镜L7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 image side of the fifth lens L5, P6R1, P6R2 represent the object side and image side of the sixth lens L6, P7R1 P7R2 represents the object side and image side of the seventh lens L7, 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】
 To 反曲点个数Number of recurve points 反曲点位置1Recurve point position 1 反曲点位置2Recurve point position 2 反曲点位置3Recurve point position 3
P1R1 P1R1 00  To  To  To
P1R2 P1R2 00  To  To  To
P2R1 P2R1 00  To  To  To
P2R2 P2R2 00  To  To  To
P3R1P3R1 11 0.2450.245  To  To
P3R2P3R2 22 0.4450.445 1.5051.505  To
P4R1P4R1 22 0.3950.395 1.3651.365  To
P4R2P4R2 11 1.6351.635  To  To
P5R1P5R1 22 0.6350.635 2.0152.015  To
P5R2P5R2 33 0.6150.615 2.0752.075 2.2852.285
P6R1P6R1 22 0.6150.615 2.2852.285  To
P6R2P6R2 11 2.5552.555  To  To
P7R1P7R1 22 1.9051.905 3.5253.525  To
P7R2P7R2 33 0.6750.675 3.6153.615 3.8153.815
【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 00  To  To
P1R2 P1R2 00  To  To
P2R1 P2R1 00  To  To
P2R2 P2R2 00  To  To
P3R1P3R1 11 0.4150.415  To
P3R2P3R2 11 0.7750.775  To
P4R1P4R1 22 0.7250.725 1.5851.585
P4R2 P4R2 00  To  To
P5R1P5R1 11 1.1251.125  To
P5R2P5R2 11 1.1551.155  To
P6R1P6R1 11 1.0751.075  To
P6R2 P6R2 00  To  To
P7R1P7R1 11 3.4253.425  To
P7R2P7R2 11 1.4851.485  To
图2、图3分别示出了波长为650nm、610nm、555nm、510nm、470nm和430nm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, 470 nm, and 430 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 meridian direction. song.
后出现的表13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 13 shows the values corresponding to the various numerical values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
如表13所示，第一实施方式满足各条件式。As shown in Table 13, 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3.73mm，全视场像高为4.636mm，对角线方向的视场角为80.00°，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 3.73mm, the full-field image height is 4.636mm, the diagonal field angle is 80.00°, 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 PCTCN2019123312-appb-000004
Figure PCTCN2019123312-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 PCTCN2019123312-appb-000005
Figure PCTCN2019123312-appb-000005
Figure PCTCN2019123312-appb-000006
Figure PCTCN2019123312-appb-000006
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1Recurve point position 1 反曲点位置2Recurve point position 2 反曲点位置3Recurve point position 3
P1R1 P1R1 00  To  To  To
P1R2P1R2 11 1.3051.305  To  To
P2R1 P2R1 00  To  To  To
P2R2 P2R2 00  To  To  To
P3R1P3R1 11 0.2050.205  To  To
P3R2P3R2 11 0.4950.495  To  To
P4R1P4R1 22 0.5050.505 1.3651.365  To
P4R2P4R2 11 1.6351.635  To  To
P5R1P5R1 22 0.5850.585 1.9951.995  To
P5R2P5R2 22 0.5250.525 2.0152.015  To
P6R1P6R1 22 0.7450.745 2.3252.325  To
P6R2P6R2 11 2.8152.815  To  To
P7R1P7R1 22 1.7851.785 3.8253.825  To
P7R2P7R2 33 0.6550.655 3.2553.255 3.9853.985
【表8】【Table 8】
 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 00  To  To
P1R2 P1R2 00  To  To
P2R1 P2R1 00  To  To
P2R2 P2R2 00  To  To
P3R1P3R1 11 0.3450.345  To
P3R2P3R2 11 0.8650.865  To
P4R1P4R1 22 0.9650.965 1.5351.535
P4R2 P4R2 00  To  To
P5R1P5R1 11 1.0451.045  To
P5R2P5R2 11 1.0051.005  To
P6R1P6R1 11 1.3651.365  To
P6R2 P6R2 00  To  To
P7R1P7R1 22 3.1453.145 4.0654.065
P7R2P7R2 11 1.3751.375  To
图6、图7分别示出了波长为650nm、610nm、555nm、510nm、470nm和430nm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 having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 430 nm pass 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13所示，第二实施方式满足各条件式。As shown in Table 13, 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3.67mm，全视场像高为4.636mm，对角线方向的视场角为80.00°，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 3.67mm, the full-field image height is 4.636mm, the diagonal field angle is 80.00°, 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 PCTCN2019123312-appb-000007
Figure PCTCN2019123312-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 PCTCN2019123312-appb-000008
Figure PCTCN2019123312-appb-000008
Figure PCTCN2019123312-appb-000009
Figure PCTCN2019123312-appb-000009
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1Recurve point position 1 反曲点位置2Recurve point position 2 反曲点位置3Recurve point position 3
P1R1P1R1 11 1.8251.825  To  To
P1R2P1R2 11 1.1651.165  To  To
P2R1 P2R1 00  To  To  To
P2R2 P2R2 00  To  To  To
P3R1 P3R1 00  To  To  To
P3R2P3R2 22 0.4750.475 1.5351.535  To
P4R1P4R1 22 0.3950.395 1.3851.385  To
P4R2P4R2 11 1.6151.615  To  To
P5R1P5R1 22 0.5950.595 2.0052.005  To
P5R2P5R2 33 0.5450.545 2.0452.045 2.2852.285
P6R1P6R1 22 0.8550.855 2.4152.415  To
P6R2P6R2 11 2.8452.845  To  To
P7R1P7R1 22 1.7951.795 3.8653.865  To
P7R2P7R2 33 0.7050.705 3.3753.375 4.0354.035
【表12】【Table 12】
 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 00  To  To
P1R2 P1R2 00  To  To
P2R1 P2R1 00  To  To
P2R2 P2R2 00  To  To
P3R1 P3R1 00  To  To
P3R2P3R2 11 0.8550.855  To
P4R1P4R1 22 0.7750.775 1.5851.585
P4R2 P4R2 00  To  To
P5R1P5R1 11 1.0551.055  To
P5R2P5R2 11 0.9950.995  To
P6R1P6R1 11 1.5151.515  To
P6R2 P6R2 00  To  To
P7R1P7R1 11 3.1353.135  To
P7R2P7R2 11 1.5351.535  To
图10、图11分别示出了波长为650nm、610nm、555nm、510nm、470nm和430nm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, 470 nm, and 430 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13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 13 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 expression.
在本实施方式中，所述摄像光学镜头的入瞳直径为3.610mm，全视场像高为4.636mm，对角线方向的视场角为80.00°，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 3.610mm, the full-field image height is 4.636mm, the diagonal field angle is 80.00°, wide-angle, ultra-thin, and its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
【表13】【Table 13】
参数及条件式Parameters and conditions 实施例1Example 1 实施例2Example 2 实施例3Example 3
f5/ff5/f -6.009-6.009 -6.200-6.200 -14.848-14.848
v1/v2v1/v2 3.9703.970 2.8772.877 3.7453.745
d5/d6d5/d6 5.0855.085 10.70010.700 14.42914.429
ff 5.4095.409 5.3225.322 5.2355.235
f1f1 6.0176.017 6.0456.045 6.4326.432
f2f2 -30.501-30.501 -29.337-29.337 -77.848-77.848
f3f3 -18.648-18.648 -15.535-15.535 -12.989-12.989
f4f4 14.00314.003 11.54611.546 11.86511.865
f5f5 -32.505-32.505 -32.994-32.994 -77.731-77.731
f6f6 5.2115.211 5.5855.585 5.4735.473
f7f7 -3.413-3.413 -3.638-3.638 -3.503-3.503
f12f12 6.9336.933 7.0317.031 6.7126.712
FnoFno 1.4501.450 1.4501.450 1.4301.430
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：具有正屈折力的第一透镜，具有负屈折力的第二透镜，具有负屈折力的第三透镜，具有正屈折力的第四透镜，具有负屈折力的第五透镜，具有正屈折力的第六透镜，以及具有负屈折力的第七透镜；An imaging optical lens, characterized in that the imaging optical lens, from the object side to the image side, sequentially includes: a first lens with positive refractive power, a second lens with negative refractive power, and a second lens with negative refractive power. Three lenses, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power;
    所述摄像光学镜头的焦距为f，所述第五透镜的焦距为f5，所述第一透镜的阿贝数为v1，所述第二透镜的阿贝数为v2，所述第三透镜的轴上厚度为d5，所述第三透镜的像侧面到所述第四透镜的物侧面的轴上距离为d6，且满足下列关系式：The focal length of the imaging optical lens is f, the focal length of the fifth lens is f5, the Abbe number of the first lens is v1, the Abbe number of the second lens is v2, and that of the third lens The on-axis thickness is d5, the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, and the following relationship is satisfied:
    -15.00≤f5/f≤-6.00；-15.00≤f5/f≤-6.00;
    2.80≤v1/v2≤4.00；2.80≤v1/v2≤4.00;
    5.00≤d5/d6≤15.00。5.00≤d5/d6≤15.00.
  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，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, and the curvature radius of the image side surface of the second lens is R4, and the following relationship is satisfied:
    8.00≤(R3+R4)/(R3-R4)≤20.00。8.00≤(R3+R4)/(R3-R4)≤20.00.
  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，且满足下列关系式：The imaging optical lens of claim 1, wherein the radius of curvature of the object side of the sixth lens is R11, and the radius of curvature of the image side of the sixth lens is R12, and the following relationship is satisfied:
    -0.70≤(R11+R12)/(R11-R12)≤0.00。-0.70≤(R11+R12)/(R11-R12)≤0.00.
  4. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第一透镜的焦距为f1，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 focal length of the first lens is f1, the radius of curvature of the object side of the first lens is R1, and the radius of curvature of the image side 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 the following relationship is satisfied:
    0.56≤f1/f≤1.84；0.56≤f1/f≤1.84;
    -3.89≤(R1+R2)/(R1-R2)≤-1.17；-3.89≤(R1+R2)/(R1-R2)≤-1.17;
    0.07≤d1/TTL≤0.24。0.07≤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，所述第二透镜的焦距为f2，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 focal length of the second lens is f2, the on-axis thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and satisfies The following relationship:
    -29.74≤f2/f≤-3.67；-29.74≤f2/f≤-3.67;
    0.02≤d3/TTL≤0.06。0.02≤d3/TTL≤0.06.
  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:
    -6.90≤f3/f≤-1.65；-6.90≤f3/f≤-1.65;
    0.39≤(R5+R6)/(R5-R6)≤2.54；0.39≤(R5+R6)/(R5-R6)≤2.54;
    0.02≤d5/TTL≤0.07。0.02≤d5/TTL≤0.07.
  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，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 radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R8. , 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:
    1.08≤f4/f≤3.88；1.08≤f4/f≤3.88;
    0.00≤(R7+R8)/(R7-R8)≤0.19；0.00≤(R7+R8)/(R7-R8)≤0.19;
    0.04≤d7/TTL≤0.13。0.04≤d7/TTL≤0.13.
  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 radius of curvature of the object side surface of the fifth lens is R9, the radius of curvature of the image side surface 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:
    3.98≤(R9+R10)/(R9-R10)≤22.52；3.98≤(R9+R10)/(R9-R10)≤22.52;
    0.02≤d9/TTL≤0.08。0.02≤d9/TTL≤0.08.
  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:
    0.48≤f6/f≤1.57；0.48≤f6/f≤1.57;
    0.05≤d11/TTL≤0.16。0.05≤d11/TTL≤0.16.
  10. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第七透镜的焦距为f7，所述第七透镜物侧面的曲率半径为R13，所述第七透镜像侧面的曲率半径为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：The imaging optical lens of claim 1, wherein the focal length of the seventh lens is f7, the radius of curvature of the object side of the seventh lens is R13, and the radius of curvature of the image side of the seventh lens is R14 , The axial thickness of the seventh lens is d13, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
    -1.37≤f7/f≤-0.42；-1.37≤f7/f≤-0.42;
    0.06≤(R13+R14)/(R13-R14)≤0.36；0.06≤(R13+R14)/(R13-R14)≤0.36;
    0.03≤d13/TTL≤0.10。0.03≤d13/TTL≤0.10.
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Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2015072405A (en) * 2013-10-04 2015-04-16 コニカミノルタ株式会社 Image capturing lens, image capturing device, and mobile terminal
CN107367827A (en) * 2017-09-13 2017-11-21 浙江舜宇光学有限公司 Optical imaging lens
CN207123646U (en) * 2017-09-13 2018-03-20 浙江舜宇光学有限公司 Optical imaging lens
CN110262007A (en) * 2019-06-30 2019-09-20 瑞声科技(新加坡)有限公司 Camera optical camera lens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015072405A (en) * 2013-10-04 2015-04-16 コニカミノルタ株式会社 Image capturing lens, image capturing device, and mobile terminal
CN107367827A (en) * 2017-09-13 2017-11-21 浙江舜宇光学有限公司 Optical imaging lens
CN207123646U (en) * 2017-09-13 2018-03-20 浙江舜宇光学有限公司 Optical imaging lens
CN110262007A (en) * 2019-06-30 2019-09-20 瑞声科技(新加坡)有限公司 Camera optical camera lens

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