WO2019218759A1 - 光学影像镜组 - Google Patents

光学影像镜组 Download PDF

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Publication number
WO2019218759A1
WO2019218759A1 PCT/CN2019/077283 CN2019077283W WO2019218759A1 WO 2019218759 A1 WO2019218759 A1 WO 2019218759A1 CN 2019077283 W CN2019077283 W CN 2019077283W WO 2019218759 A1 WO2019218759 A1 WO 2019218759A1
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Prior art keywords
lens
optical image
focal length
effective focal
optical
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PCT/CN2019/077283
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English (en)
French (fr)
Inventor
张晓辉
吕赛锋
游兴海
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浙江舜宇光学有限公司
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Publication of WO2019218759A1 publication Critical patent/WO2019218759A1/zh

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

Definitions

  • the present application relates to an optical image lens set, and more particularly to an optical image lens set consisting of six lenses.
  • the present application proposes an optical system that is applicable to portable electronic products and has miniaturization, large aperture, good imaging quality, and low sensitivity characteristics.
  • an optical image lens set which may include a first lens, a second lens, and a first power having a power along the optical axis from the object side to the image side.
  • a three lens, a fourth lens, a fifth lens and a sixth lens wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have a positive power
  • the sixth lens may have a negative power; and the effective focal length f of the optical image group and the effective focal length f5 of the fifth lens satisfy: 1 ⁇ f / f5 ⁇ 3.
  • the effective focal length f of the optical image lens set and the effective focal length f2 of the second lens may satisfy: 0.5 ⁇ f / f2 ⁇ 1.5.
  • the air gap T45 of the fourth lens and the fifth lens on the optical axis and the air space T34 of the third lens and the fourth lens on the optical axis may satisfy: 0.1 ⁇ T45/T34 ⁇ 0.6.
  • the effective focal length f1 of the first lens and the effective focal length f of the optical image set may satisfy: f1/f ⁇ -3.
  • the effective focal length f1 of the first lens and the effective focal length f of the optical image group may satisfy: -30 ⁇ f1/f ⁇ -3.
  • the effective focal length f of the optical image group and the effective focal length f3 of the third lens may satisfy: -3 ⁇ f3 / f ⁇ -1.
  • the effective focal length f of the optical image lens set and the effective focal length f6 of the sixth lens may satisfy: -1.5 ⁇ f / f6 ⁇ - 0.5.
  • the effective focal length f of the optical image lens set and the radius of curvature R2 of the image side of the first lens may satisfy: 0 ⁇ f / R2 ⁇ 1.
  • the radius of curvature R6 of the image side of the third lens and the radius of curvature R3 of the object side of the second lens may satisfy: 1 ⁇ R6/R3 ⁇ 1.5.
  • the center thickness CT3 of the third lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.5 ⁇ CT4/CT3 ⁇ 1.5.
  • the air spacing T12 of the first lens and the second lens on the optical axis may be between 0.1 Hz on the optical axis and the imaging surface of the optical lens group on the optical axis: 0.1 ⁇ (T12*2)/TTL ⁇ 0.8.
  • the distance from the object side of the first lens to the imaging surface of the optical image group on the optical axis TTL and the center thickness CT5 of the fifth lens may satisfy: 1.3 ⁇ CT5/TTL*10 ⁇ 2.6.
  • the maximum half angle of view HFOV of the optical image set can satisfy the conditional formula: tan(HFOV) > 0.8.
  • an optical image lens set which may include a first lens and a second lens having power along the optical axis from the object side to the image side. a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have The positive power; the sixth lens may have a negative power; and the effective focal length f of the optical image group and the effective focal length f2 of the second lens may satisfy: 0.5 ⁇ f / f2 ⁇ 1.5.
  • an optical image lens set which may include a first lens and a second lens having power along the optical axis from the object side to the image side.
  • a third lens, a fourth lens, a fifth lens, and a sixth lens wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have The positive power; the sixth lens may have a negative power; and the effective focal length f of the optical image group and the effective focal length f3 of the third lens may satisfy: -3 ⁇ f3 / f ⁇ -1.
  • an optical image lens set which may include a first lens and a second lens having power along the optical axis from the object side to the image side. a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have The positive power; the sixth lens may have a negative power; and the effective focal length f of the optical image group and the effective focal length f6 of the sixth lens may satisfy: -1.5 ⁇ f / f6 ⁇ - 0.5.
  • an optical image lens set which may include a first lens and a second lens having power along the optical axis from the object side to the image side.
  • a third lens, a fourth lens, a fifth lens, and a sixth lens wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have The positive power; the sixth lens may have a negative power; and the radius of curvature R6 of the image side of the third lens and the radius of curvature R3 of the object side of the second lens may satisfy: 1 ⁇ R6/R3 ⁇ 1.5.
  • an optical image lens set which may include a first lens and a second lens having power along the optical axis from the object side to the image side.
  • a third lens, a fourth lens, a fifth lens, and a sixth lens wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have Positive power; the sixth lens may have negative power; and the center thickness CT3 of the third lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.5 ⁇ CT4/CT3 ⁇ 1.5 .
  • an optical image lens set which may include a first lens and a second lens having power along the optical axis from the object side to the image side.
  • a third lens, a fourth lens, a fifth lens, and a sixth lens wherein: the first lens may have a negative power, the object side may be a plane; the second lens may have a positive power; and the fifth lens may have a positive power; a sixth lens may have a negative power; and an air gap T45 of the fourth lens and the fifth lens on the optical axis and an air space T34 of the third lens and the fourth lens on the optical axis may satisfy : 0.1 ⁇ T45 / T34 ⁇ 0.6.
  • the optical image lens set configured as described above can have at least one advantageous effect such as a large aperture, a large angle of view, a large aperture, miniaturization, high image quality, balance aberration, and low sensitivity.
  • FIG. 1 is a schematic structural view showing an optical image lens group according to Embodiment 1 of the present application.
  • 2A to 2D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 1;
  • FIG. 3 is a schematic structural view showing an optical image lens group according to Embodiment 2 of the present application.
  • 4A to 4D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 2;
  • FIG. 5 is a schematic structural view showing an optical image lens group according to Embodiment 3 of the present application.
  • 6A to 6D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 3;
  • FIG. 7 is a schematic structural view showing an optical image lens group according to Embodiment 4 of the present application.
  • 8A to 8D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 4;
  • FIG. 9 is a schematic structural view showing an optical image lens group according to Embodiment 5 of the present application.
  • 10A to 10D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 5;
  • FIG. 11 is a schematic structural view showing an optical image lens group according to Embodiment 6 of the present application.
  • 12A to 12D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 6;
  • FIG. 13 is a schematic structural view showing an optical image lens group according to Embodiment 7 of the present application.
  • 14A to 14D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 7;
  • FIG. 15 is a schematic structural view showing an optical image lens group according to Embodiment 8 of the present application.
  • 16A to 16D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical image lens group of Embodiment 8.
  • first, second, etc. are used to distinguish one feature from another, and do not represent any limitation of the feature.
  • first lens discussed below may also be referred to as a second lens without departing from the teachings of the present application.
  • the thickness, size, and shape of the lens have been somewhat exaggerated for convenience of explanation.
  • the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the spherical or aspherical shape shown in the drawings.
  • the drawings are only examples and are not to scale.
  • the paraxial region refers to a region near the optical axis. If the surface of the lens is convex and the position of the convex surface is not defined, it indicates that the surface of the lens is convex at least in the paraxial region; if the surface of the lens is concave and the position of the concave surface is not defined, it indicates that the surface of the lens is at least in the paraxial region. Concave.
  • the surface closest to the object in each lens is referred to as the object side, and the surface of each lens closest to the image plane is referred to as the image side.
  • the optical image lens group has, for example, six lenses, that is, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens.
  • the six lenses are sequentially arranged from the object side to the image side along the optical axis.
  • the first lens may have a negative power
  • the object side may be a plane
  • the second lens may have a positive power
  • the third lens may optionally have a positive power or a negative power
  • the fourth lens may optionally have positive or negative power
  • the fifth lens may have positive power
  • the sixth lens may have negative power.
  • the effective focal length f of the optical image lens set and the effective focal length f5 of the fifth lens may satisfy: 1 ⁇ f/f5 ⁇ 3, and more specifically, may further satisfy 1.17 ⁇ f/f5 ⁇ 1.64. .
  • the power of the fifth lens it is advantageous to balance the power of the first lens and the third lens in the optical system, to help reduce the sensitivity of the optical system, and to correct the astigmatism of the optical system.
  • the effective focal length f of the optical image lens set and the effective focal length f2 of the second lens may satisfy: 0.5 ⁇ f/f2 ⁇ 1.5, and more specifically, may further satisfy 0.99 ⁇ f/f2 ⁇ 1.20 .
  • the spherical aberration of the optical system at a large aperture will increase.
  • the effect of the spherical aberration of the system can be improved while the light is concentrated, and the imaging quality is improved.
  • the air interval T45 of the fourth lens and the fifth lens on the optical axis and the air interval T34 of the third lens and the fourth lens on the optical axis may satisfy: 0.1 ⁇ T45/T34 ⁇ 0.6 More specifically, 0.12 ⁇ T45 / T34 ⁇ 0.51 can be further satisfied.
  • T34 helps to adjust the incident angle of light entering the fourth lens. By changing the gap between the lenses, the sensitivity of the fourth lens can be improved. A reasonable ratio is beneficial to the system miniaturization design and improve system performance.
  • the effective focal length f1 of the first lens and the effective focal length f of the optical image set may satisfy: f1/f ⁇ -3. Further, between the effective focal length f1 of the first lens and the effective focal length f of the optical image group, -30 ⁇ f1/f ⁇ -3 may be satisfied, for example, -28.25 ⁇ f1/f ⁇ -4.03 may be satisfied.
  • the effective focal length f of the optical image lens set and the effective focal length f3 of the third lens may satisfy: -3 ⁇ f3 / f ⁇ -1, and more specifically, may further satisfy -2.82 ⁇ f3 / f ⁇ -1.23.
  • the effective focal length f of the optical image lens set and the effective focal length f6 of the sixth lens may satisfy: -1.5 ⁇ f / f6 ⁇ -0.5, and more specifically, may further satisfy -1.25 ⁇ f / F6 ⁇ -0.94. If the ratio of f/f6 is too large, the sixth lens will bear more power and the light refraction angle will become larger. Controlling the ratio within the condition range will help to reduce the system sensitivity; and the appropriate ratio is beneficial to correct the field of the system. Qu and distortion.
  • the effective focal length f of the optical image group and the radius of curvature R2 of the image side of the first lens may satisfy: 0 ⁇ f/R2 ⁇ 1, and more specifically, may further satisfy 0.07 ⁇ f/ R2 ⁇ 0.48.
  • the radius of curvature R6 of the image side of the third lens and the radius of curvature R3 of the object side of the second lens may satisfy: 1 ⁇ R6/R3 ⁇ 1.5, and more specifically, may further satisfy 1.17 ⁇ R6/R3 ⁇ 1.45.
  • the second lens is a positive lens.
  • the positive radius of curvature of R3 is favorable for collecting light, but it will bring a large spherical aberration.
  • R6 is the image side concave surface of the third negative lens, which can be used to balance the spherical aberration caused by R3.
  • the R6/R3 ratio is controlled within a small range to effectively balance the system spherical aberration, which is beneficial to obtain better image quality.
  • the center thickness CT3 of the third lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.5 ⁇ CT4/CT3 ⁇ 1.5, and more specifically, may further satisfy 0.93 ⁇ CT4 / CT3 ⁇ 1.37.
  • the thickness of the lens center affects the power.
  • the air spacing T12 of the first lens and the second lens on the optical axis may be between 0.1 ft on the optical axis and the imaging surface of the optical lens group on the optical axis: 0.1 ⁇ (T12*2)/TTL ⁇ 0.8, more specifically, 0.16 ⁇ (T12*2) / TTL ⁇ 0.60 can be further satisfied.
  • the value of T12 is sensitive to the system field curvature and has a great effect on field curvature optimization.
  • the first lens of the optical system is assembled as a separate component, and the (T12*2)/TTL ratio is controlled within a suitable range to facilitate the system. Field curvature adjustment and system total length control.
  • the distance from the object side of the first lens to the imaging surface of the optical image group on the optical axis TTL and the center thickness CT5 of the fifth lens may satisfy: 1.3 ⁇ CT5/TTL*10 ⁇ 2.6 More specifically, it can further satisfy 1.34 ⁇ CT5 / TTL * 10 ⁇ 2.5.
  • the fifth lens has the strongest concentrating ability, and controlling the ratio within a reasonable range is advantageous for correcting system distortion and astigmatism.
  • the maximum half angle of view HFOV of the optical image group may satisfy the conditional formula: tan(HFOV)>0.8, and more specifically, tan(HFOV) ⁇ 0.87 may be further satisfied.
  • the first lens may be made of a glass material.
  • the first lens of the optical system is a lens protection glass, and the glass material is more resistant to abrasion than the optical plastic, and the image quality is not damaged by the wear of the lens; the side of the object is flat, which is convenient for processing and reduces the optical efficiency of the first lens. The probability of damage within the range.
  • the optical image lens set may also be provided with an aperture STO for limiting the light beam, adjusting the amount of incoming light, and improving the imaging quality.
  • the optical image group set described above may further include a cover glass for protecting the photosensitive element on the imaging surface.
  • the optical image lens set according to the above embodiment of the present application may employ a plurality of lenses, such as the six described above.
  • the aperture of the optical image group can be effectively enlarged, the lens can be miniaturized, and the image quality can be improved.
  • the optical image lens set is more advantageous for production processing and can be applied to portable electronic products.
  • At least one of the mirror faces of each lens is an aspherical mirror.
  • Aspherical lenses are characterized by a continuous change in curvature from the center of the lens to the periphery. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery, the aspherical lens has better curvature radius characteristics, has the advantages of improving distortion and improving astigmatic aberration, and can make the field of view larger and more realistic. With an aspherical lens, the aberrations that occur during imaging can be eliminated as much as possible, improving image quality. In addition, the use of aspherical lenses can also effectively reduce the number of lenses in an optical system.
  • the front flat cover glass is a lens having a power, which is converted from a conventional 5-piece lens to a 6-piece lens.
  • This application increases the number of lenses while maintaining a better imaging level without increasing the overall length of the system.
  • the system has a large angle of view and a large aperture, which provides a new direction for the development trend of wide angle of the lens of the mobile phone and miniaturization of the large aperture.
  • optical image lens group but the optical image lens group is not limited to including six lenses.
  • the optical image set can also include other numbers of lenses if desired.
  • FIG. 1 is a block diagram showing the structure of an optical image lens set according to Embodiment 1 of the present application.
  • the optical image lens group includes six lenses E1-E6 sequentially arranged from the object side to the image side along the optical axis.
  • the first lens E1 has an object side surface S1 and an image side surface S2;
  • the second lens E2 has an object side surface S3 and an image side surface S4;
  • the third lens E3 has an object side surface S5 and an image side surface S6;
  • the fourth lens E4 has an object side surface S7 and an image side surface S8;
  • the fifth lens E5 has an object side surface S9 and an image side surface S10;
  • the sixth lens E6 has an object side surface S11 and an image side surface S12.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a positive power
  • the fifth lens E5 has positive power
  • the sixth lens E6 has negative power.
  • an aperture STO disposed between the first lens E1 and the second lens E2 for limiting the light beam is further included.
  • the optical image lens group according to Embodiment 1 may include a filter E7 having an object side S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging plane S15.
  • Table 1 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 1.
  • each lens is taken as an example.
  • the aperture of the lens is effectively enlarged, and the large aperture and miniaturization of the lens are ensured; and various aberrations are corrected at the same time.
  • the resolution and image quality of the lens is defined by the following formula:
  • x is the distance of the aspherical surface at height h from the optical axis, and the distance from the aspherical vertex is high;
  • k is the conic coefficient (given in Table 1 above);
  • Ai is the correction coefficient of the a-th order of the aspheric surface.
  • Table 2 shows the high order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 which can be used for each of the mirror faces S3-S12 in Embodiment 1.
  • Table 3 below shows the effective focal lengths f1 to f6 of the lenses of Embodiment 1, the effective focal length f of the optical image group, the object side S1 of the first lens E1, and the imaging surface S15 of the optical image group on the optical axis.
  • the distance TTL ie, the total optical length of the optical image group
  • the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • 2A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 1, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • 2B shows an astigmatism curve of the optical image lens group of Embodiment 1, which shows a meridional field curvature and a sagittal image plane curvature.
  • 2C shows a distortion curve of the optical image lens group of Embodiment 1, which shows distortion magnitude values in the case of different viewing angles.
  • 2D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 1, which shows the deviation of different image heights on the imaging surface after the light rays pass through the optical image lens group.
  • the optical image lens set given in Embodiment 1 can achieve good image quality.
  • An optical image lens set according to Embodiment 2 of the present application is described below with reference to FIGS. 3 to 4D.
  • the optical image lens group described in the following embodiments is the same as the optical image lens group described in Embodiment 1. For the sake of brevity, a description similar to that of Embodiment 1 will be omitted.
  • FIG. 3 is a schematic structural view of an optical image lens set according to Embodiment 2 of the present application.
  • the optical image lens group according to Embodiment 2 includes first to sixth lenses E1 to E6 having object side and image side, respectively.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a negative optical focus.
  • Table 4 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 2.
  • Table 5 shows the high order term coefficients of the respective aspherical mirrors in Example 2.
  • Table 6 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 2, the effective focal length f of the optical image lens group, the distance from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image group on the optical axis. TTL, the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • 4A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 2, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • 4B shows an astigmatism curve of the optical image lens group of Embodiment 2, which shows a meridional field curvature and a sagittal image plane curvature.
  • Fig. 4C shows a distortion curve of the optical image lens group of Embodiment 2, which shows distortion magnitude values in the case of different viewing angles.
  • 4D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 2, which shows deviations of different image heights on the imaging surface after the light rays pass through the optical image lens group.
  • the optical image lens set given in Embodiment 2 can achieve good image quality.
  • FIG. 5 is a schematic structural view of an optical image lens group according to Embodiment 3 of the present application.
  • the optical image lens group according to Embodiment 3 includes first to sixth lenses E1 to E6 having an object side and an image side, respectively.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a negative optical focus.
  • Table 7 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 3.
  • Table 8 shows the high order term coefficients of the respective aspherical mirrors in the third embodiment.
  • Table 9 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 3, the effective focal length f of the optical image group, the object side surface S1 of the first lens E1, and the distance of the imaging surface S15 of the optical image group on the optical axis.
  • TTL the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • FIG. 6A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 3, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 6B shows an astigmatism curve of the optical image lens group of Embodiment 3, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 6C shows a distortion curve of the optical image lens group of Embodiment 3, which shows distortion magnitude values in the case of different viewing angles.
  • 6D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 3, which shows deviations of different image heights on the imaging surface after the light passes through the optical image lens group.
  • the optical image lens set given in Embodiment 3 can achieve good image quality.
  • FIG. 7 is a block diagram showing the structure of an optical image lens set according to Embodiment 4 of the present application.
  • the optical image lens group according to Embodiment 4 includes first to sixth lenses E1 to E6 having object side and image side, respectively.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a negative optical focus.
  • Table 10 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 4.
  • Table 11 shows the high order term coefficients of the respective aspherical mirrors in Example 4.
  • Table 12 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 4, the effective focal length f of the optical image lens group, the distance from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image group on the optical axis. TTL, the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • Fig. 8A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 4, which shows that light rays of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 8B shows an astigmatism curve of the optical image lens group of Embodiment 4, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 8C shows a distortion curve of the optical image lens group of Embodiment 4, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 8D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 4, which shows deviations of different image heights on the imaging plane after the light rays pass through the optical image lens group. 8A to 8D, the optical image lens set given in Embodiment 4 can achieve good image quality.
  • FIG. 9 is a block diagram showing the structure of an optical image lens set according to Embodiment 5 of the present application.
  • the optical image lens group according to Embodiment 5 includes first to sixth lenses E1 to E6 having an object side and an image side, respectively.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a positive power
  • the fifth lens E5 has positive power
  • the sixth lens E6 has negative power.
  • Table 13 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 5.
  • Table 14 shows the high order term coefficients of the respective aspherical mirrors in Example 5.
  • Table 15 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 5, the effective focal length f of the optical image lens group, the distance from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image group on the optical axis. TTL, the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • FIG. 10A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 5, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 10B shows an astigmatism curve of the optical image lens group of Embodiment 5, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 10C shows a distortion curve of the optical image lens group of Embodiment 5, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 10D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 5, which shows the deviation of the different image heights on the imaging plane after the light rays pass through the optical image lens group.
  • the optical image lens set given in Embodiment 5 can achieve good image quality.
  • FIG. 11 is a block diagram showing the structure of an optical image lens set according to Embodiment 6 of the present application.
  • the optical image lens group according to Embodiment 6 includes first to sixth lenses E1 to E6 having an object side and an image side, respectively.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a positive power
  • the fifth lens E5 has positive power
  • the sixth lens E6 has negative power.
  • Table 16 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 6.
  • Table 17 shows the high order term coefficients of the respective aspherical mirrors in Example 6.
  • Table 18 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 6, the effective focal length f of the optical image lens group, the distance from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image group on the optical axis. TTL, the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • Fig. 12A is a view showing an axial chromatic aberration curve of the optical image lens group of Embodiment 6, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 12B shows an astigmatism curve of the optical image lens group of Embodiment 6, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 12C shows a distortion curve of the optical image lens group of Embodiment 6, which shows the distortion magnitude value in the case of different viewing angles.
  • Fig. 12A is a view showing an axial chromatic aberration curve of the optical image lens group of Embodiment 6, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 12B shows an astigmatism curve of the optical image lens group of Embodiment 6, which shows meridional field curvature and sagittal image plane curvature.
  • 12D is a graph showing the chromatic aberration of magnification of the optical image lens set of Embodiment 6, which shows the deviation of the different image heights on the imaging plane after the light passes through the optical image lens group. 12A to 12D, the optical image lens set given in Embodiment 6 can achieve good image quality.
  • FIG. 13 is a block diagram showing the structure of an optical image lens set according to Embodiment 7 of the present application.
  • the optical image lens group according to Embodiment 7 includes first to sixth lenses E1 to E6 having an object side and an image side, respectively.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a negative optical focus.
  • Table 19 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 7.
  • Table 20 shows the high order term coefficients of the respective aspherical mirrors in Example 7.
  • Table 21 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 7, the effective focal length f of the optical image group, the distance from the object side S1 of the first lens E1 to the imaging plane S15 of the optical image group on the optical axis. TTL, the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • Fig. 14A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 7, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 14B shows an astigmatism curve of the optical image lens group of Embodiment 7, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 14C shows a distortion curve of the optical image lens group of Embodiment 7, which shows the distortion magnitude value in the case of different viewing angles.
  • Fig. 14D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 7, which shows the deviation of different image heights on the imaging plane after the light rays pass through the optical image lens group. 14A to 14D, the optical image lens set given in Embodiment 7 can achieve good image quality.
  • Figure 15 is a block diagram showing the structure of an optical image lens set according to Embodiment 8 of the present application.
  • the optical image lens group according to Embodiment 8 includes first to sixth lenses E1 to E6 each having an object side and an image side.
  • the first lens E1 has a negative refractive power
  • the object side surface S1 is a plane
  • the second lens E2 has a positive power
  • the third lens E3 has a negative power
  • the fourth lens E4 has a negative optical focus.
  • Table 22 below shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical image lens group of Example 8.
  • Table 23 shows the high order term coefficients of the respective aspherical mirrors in Example 8.
  • Table 24 shows the effective focal lengths f1 to f6 of the lenses of Embodiment 8, the effective focal length f of the optical image lens group, the distance from the object side S1 of the first lens E1 to the imaging plane S15 of the optical image group on the optical axis. TTL, the maximum half angle of view HFOV of the optical image group and the aperture number Fno of the optical image group.
  • each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
  • Fig. 16A shows an axial chromatic aberration curve of the optical image lens group of Embodiment 8, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical image lens group.
  • Fig. 16B shows an astigmatism curve of the optical image lens group of Embodiment 8, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 16C shows a distortion curve of the optical image lens group of Embodiment 8, which shows the distortion magnitude value in the case of different viewing angles.
  • Fig. 16D shows a magnification chromatic aberration curve of the optical image lens group of Embodiment 8, which shows the deviation of the different image heights on the imaging plane after the light rays pass through the optical image lens group. 16A to 16D, the optical image lens set given in Embodiment 8 can achieve good image quality.
  • Embodiments 1 to 8 respectively satisfy the relationships shown in Table 25 below.

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Abstract

一种光学影像镜组，沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜（E1）、第二透镜（E2）、第三透镜（E3）、第四透镜（E4）、第五透镜（E5）和第六透镜（E6），其中：第一透镜（E1）可具有负光焦度，其物侧面（S1）可为平面；第二透镜（E2）可具有正光焦度；第五透镜（E5）可具有正光焦度；第六透镜（E6）可具有负光焦度；以及光学影像镜组的有效焦距f与第五透镜的有效焦距f5之间可满足：1＜f/f5＜3。

Description

光学影像镜组
相关申请的交叉引用
本申请要求于2018年5月17日提交于中国国家知识产权局(CNIPA)的、专利申请号为201810471501.6的中国专利申请的优先权和权益，该专利申请通过引用整体并入本文。
技术领域
本申请涉及一种光学影像镜组，更具体地，涉及一种由六片镜片组成的光学影像镜组。
背景技术
当前手机的发展方向趋向于轻薄化，手机内部的每寸空间都十分重要。每一代更新都是挑战工艺的极限。如果能够将自身系统之外的空间加以利用，设计空间则会大大增加。一般的手机镜头都是由镜头第一片镜片进行聚光，镜头前面的保护玻璃仅仅起到保护镜头的作用。为了满足市场发展的需求，影像镜头需要尽可能的采用较少的镜片数量，缩短镜头总长，但由此会难以满足成像质量的需求。
因此，本申请提出了一种可适用于便携式电子产品，具有小型化、大孔径、良好的成像质量且低敏感度特性的光学系统。
发明内容
本申请提供的技术方案至少部分地解决了以上所述的技术问题。
根据本申请的一个方面，提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及光学影像镜组的有效焦距f与所述第五透镜的有效焦距f5之间满足：1<f/f5<3。
在一个实施方式中，光学影像镜组的有效焦距f与第二透镜的有效焦距f2之间可满足：0.5<f/f2<1.5。
在一个实施方式中，第四透镜和第五透镜在光轴上的空气间隔T45与第三透镜和第四透镜在光轴上的空气间隔T34之间可满足：0.1<T45/T34<0.6。
在一个实施方式中，第一透镜的有效焦距f1与光学影像组的有效焦距f之间可满足：f1/f<-3。可选地，更进一步地，第一透镜的有效焦距f1与光学影像组的有效焦距f之间可满足：-30<f1/f<-3。
在一个实施方式中，光学影像镜组的有效焦距f与第三透镜的有效焦距f3之间可满足： -3<f3/f<-1。
在一个实施方式中，光学影像镜组的有效焦距f与第六透镜的有效焦距f6之间可满足：-1.5<f/f6<-0.5。
在一个实施方式中，光学影像镜组的有效焦距f与第一透镜的像侧面的曲率半径R2之间可满足：0<f/R2<1。
在一个实施方式中，第三透镜的像侧面的曲率半径R6与第二透镜的物侧面的曲率半径R3之间可满足：1<R6/R3<1.5。
在一个实施方式中，第三透镜在光轴上的中心厚度CT3与第四透镜在光轴上的中心厚度CT4之间可满足：0.5<CT4/CT3<1.5。
在一个实施方式中，第一透镜和第二透镜在光轴上的空气间隔T12与第一透镜的物侧面至光学影像镜组的成像面在光轴上的距离TTL之间可满足：0.1<(T12*2)/TTL<0.8。
在一个实施方式中，第一透镜的物侧面至光学影像镜组的成像面在光轴上的距离TTL与第五透镜的中心厚度CT5之间可满足：1.3<CT5/TTL*10<2.6。
在一个实施方式中，光学影像镜组的最大半视场角HFOV可满足条件式：tan(HFOV)>0.8。
根据本申请的另一方面，还提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及光学影像镜组的有效焦距f与第二透镜的有效焦距f2之间可满足：0.5<f/f2<1.5。
根据本申请的又一方面，还提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及光学影像镜组的有效焦距f与第三透镜的有效焦距f3之间可满足：-3<f3/f<-1。
根据本申请的又一方面，还提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及光学影像镜组的有效焦距f与第六透镜的有效焦距f6之间可满足：-1.5<f/f6<-0.5。
根据本申请的又一方面，还提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及第三透镜的像侧面的曲率半径R6与第二透镜的物侧面的曲率半径R3之间可满足：1<R6/R3<1.5。
根据本申请的又一方面，还提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及第三透镜在光轴上的中心厚度CT3与第四透镜在光轴上的中心厚度CT4之间可满足：0.5<CT4/CT3<1.5。
根据本申请的又一方面，还提供了这样一种光学影像镜组，该光学影像镜组沿着光轴由物侧至像侧依序可包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其中：第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第五透镜可具有正光焦度；第六透镜可具有负光焦度；以及第四透镜和第五透镜在光轴上的空气间隔T45与第三透镜和第四透镜在光轴上的空气间隔T34之间可满足：0.1<T45/T34<0.6。
通过上述配置的光学影像镜组，可具有大孔径、大视场角、大光圈、小型化、高成像品质、平衡像差、低敏感度等至少一个有益效果。
附图说明
通过参照以下附图所作出的详细描述，本申请的实施方式的以上及其它优点将变得显而易见，附图旨在示出本申请的示例性实施方式而非对其进行限制。在附图中：
图1为示出根据本申请实施例1的光学影像镜组的结构示意图；
图2A至图2D分别示出了实施例1的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图3为示出根据本申请实施例2的光学影像镜组的结构示意图；
图4A至图4D分别示出了实施例2的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图5为示出根据本申请实施例3的光学影像镜组的结构示意图；
图6A至图6D分别示出了实施例3的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图7为示出根据本申请实施例4的光学影像镜组的结构示意图；
图8A至图8D分别示出了实施例4的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图9为示出根据本申请实施例5的光学影像镜组的结构示意图；
图10A至图10D分别示出了实施例5的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图11为示出根据本申请实施例6的光学影像镜组的结构示意图；
图12A至图12D分别示出了实施例6的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图13为示出根据本申请实施例7的光学影像镜组的结构示意图；
图14A至图14D分别示出了实施例7的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图15为示出根据本申请实施例8的光学影像镜组的结构示意图；以及
图16A至图16D分别示出了实施例8的光学影像镜组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线。
具体实施方式
为了更好地理解本申请，将参考附图对本申请的各个方面做出更详细的说明。应理解，这些详细说明只是对本申请的示例性实施方式的描述，而非以任何方式限制本申请的范围。在说明书全文中，相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。
应注意，在本说明书中，第一、第二等的表述仅用于将一个特征与另一个特征区分开来，而不表示对特征的任何限制。因此，在不背离本申请的教导的情况下，下文中讨论的第一透镜也可被称作第二透镜。
在附图中，为了便于说明，已稍微夸大了透镜的厚度、尺寸和形状。具体来讲，附图中所示的球面或非球面的形状通过示例的方式示出。即，球面或非球面的形状不限于附图中示出的球面或非球面的形状。附图仅为示例而并非严格按比例绘制。
还应理解的是，用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”，当在本说明书中使用时表示存在所陈述的特征、整体、步骤、操作、元件和/或部件，但不排除存在或附加有一个或多个其它特征、整体、步骤、操作、元件、部件和/或它们的组合。此外，当诸如“...中的至少一个”的表述出现在所列特征的列表之后时，修饰整个所列特征，而不是修饰列表中的单独元件。此外，当描述本申请的实施方式时，使用“可以”表示“本申请的一个或多个实施方式”。并且，用语“示例性的”旨在指代示例或举例说明。
如在本文中使用的，用语“基本上”、“大约”以及类似的用语用作表近似的用语，而不用作表程度的用语，并且旨在说明将由本领域普通技术人员认识到的、测量值或计算值中的固有偏差。
除非另外限定，否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是，用语(例如在常用词典中定义的用语)应被解释为具有与它们在相关技术的上下文中的含义一致的含义，并且将不被以理想化或过度正式意义解释，除非本文中明确如此限定。
此外，近轴区域是指光轴附近的区域。若透镜表面为凸面且未界定该凸面位置时，则表示该透镜表面至少于近轴区域为凸面；若透镜表面为凹面且未界定该凹面位置时，则表示该透镜表面至少于近轴区域为凹面。在本文中，每个透镜中最靠近物体的表面称为物侧面，每个透镜中最靠近成像面的表面称为像侧面。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。 下面将参考附图并结合实施例来详细说明本申请。
以下结合具体实施例进一步描述本申请。
根据本申请示例性实施方式的光学影像镜组具有例如六个透镜，即第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜。这六个透镜沿着光轴从物侧至像侧依序排列。
在示例性实施方式中，第一透镜可具有负光焦度，其物侧面可为平面；第二透镜可具有正光焦度；第三透镜可选地可具有正光焦度或负光焦度；第四透镜可选地可具有正光焦度或负光焦度；第五透镜可具有正光焦度；以及第六透镜可具有负光焦度。通过合理的控制各个透镜的正负光焦度分配，不仅可有效地平衡控制系统的低阶像差，使得光学影像镜组获得较优的成像品质，而且可实现大孔径和高像素的特性。
在示例性实施方式中，光学影像镜组的有效焦距f与第五透镜的有效焦距f5之间可满足：1<f/f5<3，更具体地，可进一步满足1.17≤f/f5≤1.64。通过合理设置第五透镜的光焦度，可有利于平衡光学系统中第一透镜和第三透镜的光焦度，有助于降低光学系统的敏感度，以及修正光学系统的像散。
在示例性实施方式中，光学影像镜组的有效焦距f与第二透镜的有效焦距f2之间可满足：0.5<f/f2<1.5，更具体地，可进一步满足0.99≤f/f2≤1.20。大孔径下光学系统的球差会增大，通过合理设置第二透镜的光焦度，可在汇聚光线的同时起到改善系统球差的影响，提升成像品质。
在示例性实施方式中，第四透镜和第五透镜在光轴上的空气间隔T45与第三透镜和第四透镜在光轴上的空气间隔T34之间可满足：0.1<T45/T34<0.6，更具体地，可进一步满足0.12≤T45/T34≤0.51。T34有助于调整进入第四透镜的光线入射角度，通过改变透镜之间的间隙大小可以改善第四透镜的敏感度，合理的比值有利于系统小型化设计，并提高系统性能。
在示例性实施方式中，第一透镜的有效焦距f1与光学影像组的有效焦距f之间可满足：f1/f<-3。更进一步地，第一透镜的有效焦距f1与光学影像组的有效焦距f之间可满足：-30<f1/f<-3，例如可满足-28.25≤f1/f≤-4.03。通过合理设置第一透镜的光焦度，不仅可实现广角特性，还可平衡光焦度分配，且具有校正光学系统球差和场曲的作用，提升成像品质。
在示例性实施方式中，光学影像镜组的有效焦距f与第三透镜的有效焦距f3之间可满足：-3<f3/f<-1，更具体地，可进一步满足-2.82≤f3/f≤-1.23。通过合理设置第三透镜的光焦度，可有利于平衡第二透镜产生的球差；此外负透镜的搭配也有利于光学系统的色差校正，可有效提升成像品质。
在示例性实施方式中，光学影像镜组的有效焦距f与第六透镜的有效焦距f6之间可满足：-1.5<f/f6<-0.5，更具体地，可进一步满足-1.25≤f/f6≤-0.94。f/f6的比值太大会使第六透镜承担较多的光焦度，光线折射角度变大，将该比值控制在条件范围内有利于降低系统敏感度；并且合适的比值有利于校正系统的场曲和畸变。
在示例性实施方式中，光学影像镜组的有效焦距f与第一透镜的像侧面的曲率半径R2之间可满足：0<f/R2<1，更具体地，可进一步满足0.07≤f/R2≤0.48。通过控制第一透镜的 像侧面为凹面，增加了透镜在平板玻璃上进行加工的便利性，f/R2的比值控制在较小的范围内可以降低加工的技术难度和加工成本。
在示例性实施方式中，第三透镜的像侧面的曲率半径R6与第二透镜的物侧面的曲率半径R3之间可满足：1<R6/R3<1.5，更具体地，可进一步满足1.17≤R6/R3≤1.45。第二透镜为正透镜，R3曲率半径为正值有利于收集光线，但会带来较大球差，R6为第三负透镜的像侧凹面，可用于平衡R3带来的球差，通过将R6/R3比值控制在较小的范围内可以有效的平衡系统球差，有利于获得更好的画质。
在示例性实施方式中，第三透镜在光轴上的中心厚度CT3与第四透镜在光轴上的中心厚度CT4之间可满足：0.5<CT4/CT3<1.5，更具体地，可进一步满足0.93≤CT4/CT3≤1.37。镜片中心厚度影响光焦度，通过控制第四透镜与第三透镜的中心厚度比值，可以改善光焦度匹配状况，减小光线折射角度，降低系统敏感度，有利于系统组装。
在示例性实施方式中，第一透镜和第二透镜在光轴上的空气间隔T12与第一透镜的物侧面至光学影像镜组的成像面在光轴上的距离TTL之间可满足：0.1<(T12*2)/TTL<0.8，更具体地，可进一步满足0.16≤(T12*2)/TTL≤0.60。T12的值对系统场曲敏感，在场曲优化上有较大作用；本光学系统的第一透镜在组装上为独立部件，将(T12*2)/TTL比值控制在合适的范围内有利于系统场曲调整和系统总长控制。
在示例性实施方式中，第一透镜的物侧面至光学影像镜组的成像面在光轴上的距离TTL与第五透镜的中心厚度CT5之间可满足：1.3<CT5/TTL*10<2.6，更具体地，可进一步满足1.34≤CT5/TTL*10≤2.5。第五透镜具有最强的聚光能力，将该比值控制在合理的范围内有利于矫正系统畸变和像散。
在示例性实施方式中，光学影像镜组的最大半视场角HFOV可满足条件式：tan(HFOV)>0.8，更具体地，可进一步满足tan(HFOV)≥0.87。通过满足此条件，系统可以在保证较好像质的情况下有效的增大视场角，并且利于实现镜头的小型化。
在示例性实施方式中，第一透镜可采用玻璃材料制成。本光学系统的第一透镜为镜头保护玻璃，玻璃材料较光学塑料耐磨性更强，不会因镜片磨损导致像质受损；物侧面为平面既便于加工，又能降低第一透镜光学有效范围内的损伤几率。
在示例性实施方式中，光学影像镜组还可设置有用于限制光束的光圈STO，调节进光量，提高成像品质。
可选地，上述光学影像镜组组还可包括用于保护位于成像面上的感光元件的保护玻璃。
根据本申请的上述实施方式的光学影像镜组可采用多片镜片，例如上文所述的六片。通过合理分配各透镜的光焦度、面型、各透镜的中心厚度以及各透镜之间的轴上间距等，可有效扩大光学影像镜组的孔径、保证镜头的小型化并提高成像质量，从而使得光学影像镜组更有利于生产加工并且可适用于便携式电子产品。
在本申请的实施方式中，各透镜的镜面中的至少一个为非球面镜面。非球面透镜的特点是：曲率从透镜中心到周边是连续变化的。与从透镜中心到周边有恒定曲率的球面透镜不同， 非球面透镜具有更佳的曲率半径特性，具有改善歪曲像差及改善像散像差的优点，能够使得视野变得更大而真实。采用非球面透镜后，能够尽可能地消除在成像的时候出现的像差，从而改善成像质量。另外，非球面透镜的使用还可有效地减少光学系统中的透镜个数。
因此，根据本申请实施方式的光学影像镜组，其前置平板保护玻璃为一具有光焦度的透镜，使其由传统的5片式镜头转变成6片式镜头。本申请在满足不增加系统总长的情况下，增加了镜片数量，同时具有更好的成像水平。与此同时，系统具有较大视场角和大光圈，为手机镜头广角化、大孔径小型化的发展趋势提供了新的方向。
然而，本领域的技术人员应当理解，在未背离本申请要求保护的技术方案的情况下，可改变构成镜头的透镜数量，来获得本说明书中描述的各个结果和优点。例如，虽然在实施方式中以六个透镜为例进行了描述，光学影像镜组但是该光学影像镜组不限于包括六个透镜。如果需要，该光学影像镜组还可包括其它数量的透镜。
下面参照附图进一步描述可适用于上述实施方式的光学影像镜组的具体实施例。
实施例1
以下参照图1至图2D描述根据本申请实施例1的光学影像镜组。
图1示出了根据本申请实施例1的光学影像镜组的结构示意图。如图1所示，光学影像镜组沿着光轴包括从物侧至成像侧依序排列的六个透镜E1-E6。第一透镜E1具有物侧面S1和像侧面S2；第二透镜E2具有物侧面S3和像侧面S4；第三透镜E3具有物侧面S5和像侧面S6；第四透镜E4具有物侧面S7和像侧面S8；第五透镜E5具有物侧面S9和像侧面S10；以及第六透镜E6具有物侧面S11和像侧面S12。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有正光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
在本实施例的光学影像镜组中，还包括用于限制光束的、设置在第一透镜E1与第二透镜E2之间的光圈STO。根据实施例1的光学影像镜组可包括具有物侧面S13和像侧面S14的滤光片E7，滤光片E7可用于校正色彩偏差。来自物体的光依序穿过各表面S1至S14并最终成像在成像面S15上。
表1示出了实施例1的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。
表1
Figure PCTCN2019077283-appb-000001
Figure PCTCN2019077283-appb-000002
本实施例采用了六片透镜作为示例，通过合理分配各镜片的焦距与面型并选择合适的材料，有效扩大镜头的孔径，保证镜头的大孔径和小型化；同时校正各类像差，提高了镜头的解析度与成像品质。各非球面面型x由以下公式限定：
Figure PCTCN2019077283-appb-000003
其中，x为非球面沿光轴方向在高度为h的位置时，距非球面顶点的距离矢高；c为非球面的近轴曲率，c＝1/R(即，近轴曲率c为上表1中曲率半径R的倒数)；k为圆锥系数(在上表1中已给出)；Ai是非球面第i-th阶的修正系数。下表2示出了实施例1中可用于各镜面S3-S12的高次项系数A4、A6、A8、A10、A12、A14、A16、A18和A20。
表2
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 8.1050E-03 -5.8520E-02 3.0332E-01 -9.3690E-01 1.7678E+00 -2.0697E+00 1.4494E+00 -5.5245E-01 8.5918E-02
S4 4.5857E-02 1.6914E-02 -3.1405E-01 5.9697E-01 -4.4094E-01 -2.6200E-01 6.8695E-01 -4.3622E-01 9.3703E-02
S5 -7.3800E-03 1.1635E-01 -3.5744E-01 3.9404E-01 9.9720E-02 -8.5036E-01 9.5577E-01 -4.2830E-01 6.3337E-02
S6 -1.5913E-01 3.0745E-01 -8.8861E-01 2.3031E+00 -4.5096E+00 6.0215E+00 -5.1161E+00 2.4763E+00 -5.1332E-01
S7 -1.1311E-01 -4.2300E-02 -1.5710E-02 2.4816E-02 -1.4000E-03 1.3600E-06 4.4100E-06 -8.1000E-08 -9.4000E-08
S8 -6.8260E-02 -1.4860E-02 -2.8500E-03 1.1845E-02 -3.0900E-03 4.1600E-04 -3.3000E-07 -2.1000E-07 -7.8000E-08
S9 4.2106E-02 -2.2200E-03 2.7142E-02 -1.3770E-02 1.7050E-03 1.6800E-04 8.7200E-05 2.9600E-07 1.3900E-07
S10 1.3266E-02 -4.6850E-02 1.7014E-02 8.5970E-03 -3.4500E-03 3.2100E-06 4.0700E-06 2.1100E-06 1.2900E-06
S11 -9.4260E-02 8.3420E-03 3.4050E-03 -4.0000E-04 -2.1000E-05 -6.8000E-08 5.8900E-08 2.2400E-08 6.9700E-09
S12 -6.8830E-02 1.8648E-02 -3.4800E-03 2.4400E-04 -8.4000E-07 -5.1000E-08 -1.7000E-09 3.0800E-10 -1.7000E-10
下表3示出了实施例1的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL(即，光学影像镜组的光学总长度)、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。
表3
f1(mm) -26.98 f(mm) 3.08
f2(mm) 2.58 TTL(mm) 5.42
f3(mm) -5.17 HFOV(°) 41.3
f4(mm) 59.15 Fno 1.70
f5(mm) 2.24    
f6(mm) -2.57    
结合上表1、表3，在该实施例中：
第一透镜E1的有效焦距f1与光学影像组的有效焦距f之间满足f1/f＝-8.76；第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL与第五透镜E5的中心厚度CT5之间满足CT5/TTL*10＝1.62；第四透镜E4和第五透镜E5在光轴上的空气间隔T45与第三透镜E3和第四透镜E4在光轴上的空气间隔T34之间满足T45/T34＝0.30；光学影像镜组的有效焦距f与第二透镜E2的有效焦距f2之间满足：f/f2＝1.19；光学影像镜组的有效焦距f与第三透镜E3的有效焦距f3之间满足f3/f＝-1.68；光学影像镜组的有效焦距f与第五透镜E5的有效焦距f5之间满足f/f5＝1.37；光学影像镜组的有效焦距f与第六透镜E6的有效焦距f6之间满足f/f6＝-1.2；光学影像镜组的有效焦距f与第一透镜E1的像侧面S2的曲率半径R2之间满足f/R2＝0.22；第三透镜E3的像侧面S6的曲率半径R6与第二透镜E2的物侧面S3的曲率半径R3之间满足R6/R3＝1.30；第三透镜E3在光轴上的中心厚度CT3与第四透镜E4在光轴上的中心厚度CT4之间满足CT4/CT3＝1.36；第一透镜E1和第二透镜E2在光轴上的空气间隔T12与第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL之间满足(T12*2)/TTL＝0.16；以及光学影像镜组的最大半视场角HFOV满足条件tan(HFOV)＝0.88。
图2A示出了实施例1的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图2B示出了实施例1的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图2C示出了实施例1的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图2D示出了实施例1的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图2A至图2D可知，实施例1所给出的光学影像镜组能够实现良好的成像品质。
实施例2
以下参照图3至图4D描述了根据本申请实施例2的光学影像镜组。除了光学影像镜组的各镜片的参数之外，例如除了各镜片的曲率半径、厚度、圆锥系数、有效焦距、轴上间距、各镜面的高次项系数等之外，在本实施例2及以下各实施例中描述的光学影像镜组与实施例1中描述的光学影像镜组的布置结构相同。为简洁起见，将省略部分与实施例1相似的描述。
图3示出了根据本申请实施例2的光学影像镜组的结构示意图。如图3所示，根据实施例2的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有负光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表4示出了实施例2的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表5示出了实施例2中各非球面镜面的高次项系数。表6示出了实施例2的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限定。
表4
Figure PCTCN2019077283-appb-000004
表5
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 7.5590E-03 -4.3390E-02 2.8253E-01 -9.4091E-01 1.7833E+00 -2.0584E+00 1.4180E+00 -5.5247E-01 8.5917E-02
S4 5.3274E-02 1.1366E-02 -3.2313E-01 5.8869E-01 -4.4141E-01 -2.5878E-01 6.7503E-01 -4.3621E-01 9.3704E-02
S5 -1.3000E-04 9.0101E-02 -3.5919E-01 3.9645E-01 9.6354E-02 -8.4050E-01 9.5577E-01 -4.2830E-01 6.3337E-02
S6 -2.0174E-01 3.4691E-01 -8.8821E-01 2.2814E+00 -4.5046E+00 6.0642E+00 -5.1161E+00 2.4763E+00 -5.1332E-01
S7 -2.8896E-01 3.4552E-02 -5.1070E-02 -3.6540E-02 8.3856E-02 5.1400E-04 7.0800E-04 -2.4000E-05 -1.6000E-05
S8 -1.3468E-01 -6.4500E-03 9.2880E-03 1.4604E-02 -4.0200E-03 -4.1000E-06 2.9300E-04 -6.7000E-06 -1.6000E-05
S9 1.1635E-02 -1.0690E-02 2.7429E-02 -1.2360E-02 2.1860E-03 1.7100E-04 -3.6000E-05 -5.4000E-05 1.5600E-05
S10 3.9337E-02 -4.7600E-02 1.2145E-02 8.7760E-03 -2.7100E-03 2.8700E-04 5.3400E-05 -5.6000E-06 -1.4000E-05
S11 -9.0920E-02 1.0986E-02 2.7700E-03 -6.2000E-04 -3.0000E-05 7.4600E-06 1.6600E-06 2.5500E-07 -8.8000E-08
S12 -7.5010E-02 2.3111E-02 -4.8300E-03 4.1800E-04 4.0000E-06 -2.1000E-06 -1.9000E-07 3.7900E-09 4.1400E-09
表6
f1(mm) -12.75 f(mm) 2.88
f2(mm) 2.41 TTL(mm) 5.45
f3(mm) -6.25 HFOV(°) 42.0
f4(mm) -9.28 Fno 1.70
f5(mm) 1.97    
f6(mm) -2.99    
图4A示出了实施例2的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图4B示出了实施例2的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图4C示出了实施例2的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图4D示出了实施例2的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图4A至图4D可知，实施例2所给出的光学影像镜组能够实现良好的成像品质。
实施例3
以下参照图5至图6D描述了根据本申请实施例3的光学影像镜组。
图5示出了根据本申请实施例3的光学影像镜组的结构示意图。如图5所示，根据实施例3的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有负光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表7示出了实施例3的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表8示出了实施例3中各非球面镜面的高次项系数。表9示出了实施例3的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限定。
表7
Figure PCTCN2019077283-appb-000005
Figure PCTCN2019077283-appb-000006
表8
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 1.3916E-02 -5.1910E-02 3.0609E-01 -9.3261E-01 1.7691E+00 -2.0793E+00 1.4494E+00 -5.5247E-01 8.5910E-02
S4 7.0929E-02 2.4991E-02 -3.1592E-01 6.0008E-01 -4.4107E-01 -2.8076E-01 6.8695E-01 -4.3621E-01 9.3691E-02
S5 -6.7400E-03 1.1170E-01 -3.6100E-01 3.8521E-01 9.1265E-02 -8.4625E-01 9.5577E-01 -4.2831E-01 6.3323E-02
S6 -1.7514E-01 3.0360E-01 -8.9003E-01 2.2952E+00 -4.5121E+00 6.0328E+00 -5.1161E+00 2.4763E+00 -5.1339E-01
S7 -2.2934E-01 2.0980E-02 -5.8850E-02 -3.2130E-02 2.2711E-02 5.1500E-04 7.0200E-04 -4.9000E-05 -8.6000E-05
S8 -8.1810E-02 9.2700E-04 1.9440E-03 1.0359E-02 -4.8700E-03 -1.7000E-05 2.4800E-04 -4.1000E-05 4.4900E-05
S9 8.4690E-03 -1.8370E-02 2.5187E-02 -1.2810E-02 2.2190E-03 2.6100E-04 2.4000E-05 -4.0000E-05 3.0100E-06
S10 1.2762E-02 -5.2510E-02 1.0522E-02 7.0060E-03 -3.3700E-03 1.9400E-04 8.5400E-05 2.3100E-05 1.3500E-06
S11 -1.0689E-01 9.3620E-03 2.8620E-03 -6.8000E-04 -4.7000E-05 8.1100E-06 2.9700E-06 5.5100E-07 -1.4000E-07
S12 -8.5320E-02 2.8580E-02 -5.8400E-03 4.4800E-04 1.7200E-05 -1.4000E-06 -3.3000E-07 -2.2000E-08 5.2000E-09
表9
f1(mm) -11.59 f(mm) 2.87
f2(mm) 2.65 TTL(mm) 5.51
f3(mm) -8.09 HFOV(°) 42.0
f4(mm) -7.85 Fno 1.70
f5(mm) 1.75    
f6(mm) -2.52    
图6A示出了实施例3的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图6B示出了实施例3的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图6C示出了实施例3的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图6D示出了实施例3的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图6A至图6D可知，实施例3所给出的光学影像镜组能够实现良好的成像品质。
实施例4
以下参照图7至图8D描述了根据本申请实施例4的光学影像镜组。
图7示出了根据本申请实施例4的光学影像镜组的结构示意图。如图7所示，根据实施例4的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有负光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表10示出了实施例4的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表11示出了实施例4中各非球面镜面的高次项系数。表12示出了实施例4的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光 学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限定。
表10
Figure PCTCN2019077283-appb-000007
表11
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 9.5380E-03 -4.3480E-02 2.8446E-01 -9.3778E-01 1.7940E+00 -2.0667E+00 1.4291E+00 -5.5248E-01 8.6164E-02
S4 5.9710E-02 3.6120E-02 -3.0945E-01 5.8564E-01 -4.2687E-01 -2.6686E-01 6.6936E-01 -4.3619E-01 9.3397E-02
S5 1.1096E-02 1.0439E-01 -3.4056E-01 4.0693E-01 8.1602E-02 -8.5665E-01 9.5567E-01 -4.2825E-01 6.3338E-02
S6 -1.8874E-01 3.4983E-01 -9.0393E-01 2.3015E+00 -4.5145E+00 6.0348E+00 -5.1162E+00 2.4760E+00 -5.1332E-01
S7 -2.5893E-01 1.8239E-02 -3.3220E-02 -7.1150E-02 5.1331E-02 4.3100E-04 7.4200E-04 -2.8000E-04 -1.6000E-05
S8 -9.6470E-02 -8.6800E-03 9.2500E-04 9.8860E-03 -5.6000E-03 3.5600E-04 1.3020E-03 2.4300E-04 -2.5000E-04
S9 7.9600E-04 -1.1350E-02 2.5304E-02 -1.2940E-02 2.2200E-03 2.6700E-04 2.3200E-05 -3.9000E-05 1.0600E-06
S10 3.0486E-02 -5.1800E-02 9.4450E-03 7.4680E-03 -2.9700E-03 3.0400E-04 9.2100E-05 1.0800E-05 -1.0000E-05
S11 -1.0085E-01 1.4116E-02 2.6600E-03 -8.1000E-04 -3.9000E-05 1.1000E-05 2.1400E-06 1.6700E-07 -5.7000E-08
S12 -8.3860E-02 2.8916E-02 -6.2700E-03 4.7200E-04 1.5200E-05 -1.8000E-06 -2.4000E-07 1.1400E-09 2.9500E-09
表12
f1(mm) -35.17 f(mm) 2.93
f2(mm) 2.23 TTL(mm) 8.18
f3(mm) -3.60 HFOV(°) 41.0
f4(mm) -15.88 Fno 1.70
f5(mm) 1.97    
f6(mm) -2.83    
图8A示出了实施例4的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光 学影像镜组后的会聚焦点偏离。图8B示出了实施例4的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图8C示出了实施例4的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图8D示出了实施例4的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图8A至图8D可知，实施例4所给出的光学影像镜组能够实现良好的成像品质。
实施例5
以下参照图9至图10D描述了根据本申请实施例5的光学影像镜组。
图9示出了根据本申请实施例5的光学影像镜组的结构示意图。如图9所示，根据实施例5的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有正光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表13示出了实施例5的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表14示出了实施例5中各非球面镜面的高次项系数。表15示出了实施例5的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限定。
表13
Figure PCTCN2019077283-appb-000008
表14
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 8.1050E-03 -5.8520E-02 3.0332E-01 -9.3690E-01 1.7678E+00 -2.0697E+00 1.4494E+00 -5.5245E-01 8.5918E-02
S4 4.5857E-02 1.6914E-02 -3.1405E-01 5.9697E-01 -4.4094E-01 -2.6200E-01 6.8695E-01 -4.3622E-01 9.3703E-02
S5 -7.3800E-03 1.1635E-01 -3.5744E-01 3.9404E-01 9.9720E-02 -8.5036E-01 9.5577E-01 -4.2830E-01 6.3337E-02
S6 -1.5913E-01 3.0745E-01 -8.8861E-01 2.3031E+00 -4.5096E+00 6.0215E+00 -5.1161E+00 2.4763E+00 -5.1332E-01
S7 -1.1544E-01 -4.3440E-02 -1.5400E-02 2.5441E-02 -1.3000E-03 3.6500E-04 3.8300E-04 2.3100E-04 3.7500E-05
S8 -5.7540E-02 -1.5000E-02 -2.9300E-03 1.1951E-02 -3.0700E-03 4.3500E-04 2.6800E-05 -1.9000E-05 -8.0000E-06
S9 4.4507E-02 -1.4330E-02 2.1062E-02 -1.1820E-02 4.4000E-03 -9.0000E-04 -4.6000E-05 3.7900E-07 1.2400E-05
S10 7.3011E-02 -2.6730E-02 -1.4780E-02 1.6706E-02 -3.4500E-03 -4.8000E-07 1.8200E-06 1.0400E-06 7.9900E-07
S11 -9.5290E-02 8.1580E-03 3.4090E-03 -4.0000E-04 -2.1000E-05 2.4700E-07 1.6900E-07 4.4400E-08 -2.5000E-09
S12 -6.7670E-02 1.8840E-02 -3.5000E-03 2.3800E-04 -2.0000E-07 1.9200E-07 1.6500E-08 3.5600E-09 -1.5000E-09
表15
f1(mm) -27.94 f(mm) 3.02
f2(mm) 2.55 TTL(mm) 6.11
f3(mm) -4.97 HFOV(°) 41.0
f4(mm) 62.17 Fno 1.70
f5(mm) 2.58    
f6(mm) -3.18    
图10A示出了实施例5的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图10B示出了实施例5的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图10C示出了实施例5的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图10D示出了实施例5的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图10A至图10D可知，实施例5所给出的光学影像镜组能够实现良好的成像品质。
实施例6
以下参照图11至图12D描述了根据本申请实施例6的光学影像镜组。
图11示出了根据本申请实施例6的光学影像镜组的结构示意图。如图11所示，根据实施例6的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有正光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表16示出了实施例6的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表17示出了实施例6中各非球面镜面的高次项系数。表18示出了实施例6的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限 定。
表16
Figure PCTCN2019077283-appb-000009
表17
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 8.2480E-03 -5.8430E-02 3.0336E-01 -9.3688E-01 1.7678E+00 -2.0697E+00 1.4494E+00 -5.5245E-01 8.5918E-02
S4 4.5805E-02 1.6874E-02 -3.1405E-01 5.9701E-01 -4.4094E-01 -2.6200E-01 6.8695E-01 -4.3622E-01 9.3703E-02
S5 -7.3600E-03 1.1639E-01 -3.5742E-01 3.9401E-01 9.9720E-02 -8.5036E-01 9.5577E-01 -4.2830E-01 6.3337E-02
S6 -1.5910E-01 3.0738E-01 -8.8868E-01 2.3031E+00 -4.5096E+00 6.0215E+00 -5.1161E+00 2.4763E+00 -5.1332E-01
S7 -1.1546E-01 -4.3660E-02 -1.5420E-02 2.5535E-02 -1.3000E-03 3.6500E-04 3.8300E-04 2.3100E-04 3.7500E-05
S8 -5.7750E-02 -1.4910E-02 -2.9100E-03 1.1944E-02 -3.0700E-03 4.3500E-04 2.6800E-05 -1.9000E-05 -8.0000E-06
S9 4.5653E-02 -1.5150E-02 2.0975E-02 -1.1780E-02 4.4100E-03 -9.1000E-04 -4.8000E-05 4.1700E-07 1.2400E-05
S10 7.3103E-02 -2.6480E-02 -1.4810E-02 1.6705E-02 -3.4500E-03 -6.2000E-08 1.8200E-06 1.0400E-06 8.0400E-07
S11 -9.5270E-02 8.1490E-03 3.4070E-03 -4.0000E-04 -2.1000E-05 2.5000E-07 1.7000E-07 4.4900E-08 -2.4000E-09
S12 -6.7870E-02 1.8811E-02 -3.5000E-03 2.3800E-04 -2.0000E-07 1.9400E-07 1.7000E-08 3.6300E-09 -1.5000E-09
表18
f1(mm) -28.14 f(mm) 3.02
f2(mm) 2.57 TTL(mm) 6.15
f3(mm) -5.10 HFOV(°) 41.0
f4(mm) 99.78 Fno 1.70
f5(mm) 2.58    
f6(mm) -3.21    
图12A示出了实施例6的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图12B示出了实施例6的光学影像镜组的象散曲线，其 表示子午像面弯曲和弧矢像面弯曲。图12C示出了实施例6的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图12D示出了实施例6的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图12A至图12D可知，实施例6所给出的光学影像镜组能够实现良好的成像品质。
实施例7
以下参照图13至图14D描述了根据本申请实施例7的光学影像镜组。
图13示出了根据本申请实施例7的光学影像镜组的结构示意图。如图13所示，根据实施例7的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有负光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表19示出了实施例7的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表20示出了实施例7中各非球面镜面的高次项系数。表21示出了实施例7的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限定。
表19
Figure PCTCN2019077283-appb-000010
表20
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 1.3495E-02 -4.5960E-02 2.9809E-01 -9.3089E-01 1.7770E+00 -2.0714E+00 1.4463E+00 -5.5245E-01 8.5908E-02
S4 7.8459E-02 2.7531E-02 -3.0292E-01 6.0533E-01 -4.3930E-01 -2.6963E-01 6.7759E-01 -4.3624E-01 9.3660E-02
S5 2.6962E-02 1.0749E-01 -3.5633E-01 4.1429E-01 1.0568E-01 -8.8382E-01 9.5577E-01 -4.2831E-01 6.3287E-02
S6 -1.7082E-01 3.0715E-01 -8.7811E-01 2.2933E+00 -4.5163E+00 6.0319E+00 -5.1161E+00 2.4763E+00 -5.1332E-01
S7 -1.7595E-01 -5.7530E-02 -1.8900E-03 9.9390E-03 -2.1610E-02 3.7050E-02 3.6400E-04 1.7000E-04 3.7500E-05
S8 -1.1252E-01 3.7510E-03 3.5300E-03 1.0095E-02 -4.2800E-03 4.8300E-04 3.1100E-04 1.4400E-04 -9.5000E-05
S9 1.7428E-02 -1.2870E-02 1.8884E-02 -1.2370E-02 4.4860E-03 -7.4000E-04 2.4200E-05 2.3200E-05 -4.0000E-06
S10 7.1220E-02 -3.7350E-02 -6.5900E-03 1.6317E-02 -4.0400E-03 -1.4000E-04 6.6000E-06 2.3700E-05 1.4100E-05
S11 -1.4479E-01 3.3205E-02 -1.7400E-03 -1.0800E-03 1.9400E-05 4.6100E-05 8.6300E-06 -1.3000E-06 -1.5000E-07
S12 -8.7340E-02 3.0167E-02 -6.2800E-03 4.1100E-04 2.7800E-05 -9.5000E-08 -3.7000E-07 -3.6000E-08 3.9700E-09
表21
f1(mm) -32.67 f(mm) 3.08
f2(mm) 2.62 TTL(mm) 6.50
f3(mm) -4.90 HFOV(°) 41.0
f4(mm) -12.22 Fno 1.70
f5(mm) 2.07    
f6(mm) -2.46    
图14A示出了实施例7的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图14B示出了实施例7的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图14C示出了实施例7的光学影像镜组的畸变曲线，其表示不同视角情况下的畸变大小值。图14D示出了实施例7的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图14A至图14D可知，实施例7所给出的光学影像镜组能够实现良好的成像品质。
实施例8
以下参照图15至图16D描述了根据本申请实施例8的光学影像镜组。
图15示出了根据本申请实施例8的光学影像镜组的结构示意图。如图15所示，根据实施例8的光学影像镜组包括分别具有物侧面和像侧面的第一至第六透镜E1-E6。
在该实施例中，第一透镜E1具有负光焦度，其物侧面S1为平面；第二透镜E2具有正光焦度；第三透镜E3具有负光焦度；第四透镜E4具有负光焦度；第五透镜E5具有正光焦度；以及第六透镜E6具有负光焦度。
下表22示出了实施例8的光学影像镜组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数。表23示出了实施例8中各非球面镜面的高次项系数。表24示出了实施例8的各透镜的有效焦距f1至f6、光学影像镜组的有效焦距f、第一透镜E1的物侧面S1至光学影像镜组的成像面S15在光轴上的距离TTL、光学影像镜组的最大半视场角HFOV以及光学影像镜组的光圈数Fno。其中，各非球面面型可由上述实施例1中给出的公式(1)限定。
表22
Figure PCTCN2019077283-appb-000011
表23
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S3 1.6362E-02 -4.3520E-02 2.9767E-01 -9.3336E-01 1.7756E+00 -2.0681E+00 1.4403E+00 -5.5245E-01 8.5908E-02
S4 7.3280E-02 3.7797E-02 -3.1514E-01 5.8802E-01 -4.5068E-01 -2.6810E-01 6.7819E-01 -4.3624E-01 9.3660E-02
S5 2.8859E-02 1.1289E-01 -3.5873E-01 3.9819E-01 9.1011E-02 -8.8060E-01 9.5577E-01 -4.2831E-01 6.3287E-02
S6 -1.4653E-01 2.7892E-01 -8.7583E-01 2.3026E+00 -4.5161E+00 6.0243E+00 -5.1161E+00 2.4763E+00 -5.1332E-01
S7 -1.7478E-01 -4.2820E-02 -2.3950E-02 -3.5800E-03 -1.3240E-02 5.3523E-02 3.6400E-04 1.7000E-04 3.7500E-05
S8 -8.2150E-02 -9.0500E-03 3.5280E-03 1.3572E-02 -3.1200E-03 1.0400E-04 -2.7000E-04 -6.5000E-05 1.0600E-04
S9 3.1575E-02 -1.9650E-02 1.7927E-02 -1.2250E-02 4.5870E-03 -7.3000E-04 3.5300E-06 1.1600E-05 -2.3000E-06
S10 6.3609E-02 -3.4340E-02 -8.9900E-03 1.6335E-02 -3.9800E-03 -1.5000E-04 -4.9000E-06 1.7300E-05 1.1800E-05
S11 -1.9059E-01 4.2555E-02 -1.6300E-03 -1.1400E-03 -4.8000E-05 2.7800E-05 1.1300E-05 1.1500E-06 -6.1000E-07
S12 -8.1500E-02 2.6114E-02 -4.9300E-03 3.1000E-04 1.1600E-05 3.3600E-08 -1.4000E-07 -1.1000E-08 -3.2000E-10
表24
f1(mm) -87.01 f(mm) 3.08
f2(mm) 3.12 TTL(mm) 6.53
f3(mm) -6.95 HFOV(°) 41.0
f4(mm) -14.08 Fno 1.70
f5(mm) 2.08    
f6(mm) -2.59    
图16A示出了实施例8的光学影像镜组的轴上色差曲线，其表示不同波长的光线经由光学影像镜组后的会聚焦点偏离。图16B示出了实施例8的光学影像镜组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图16C示出了实施例8的光学影像镜组的畸变曲线， 其表示不同视角情况下的畸变大小值。图16D示出了实施例8的光学影像镜组的倍率色差曲线，其表示光线经由光学影像镜组后在成像面上的不同的像高的偏差。根据图16A至图16D可知，实施例8所给出的光学影像镜组能够实现良好的成像品质。
综上，实施例1至实施例8分别满足以下表25所示的关系。
表25
条件式/实施例 1 2 3 4 5 6 7 8
f1/f -8.76 -4.43 -4.03 -12.02 -9.24 -9.32 -10.61 -28.25
f/f5 1.37 1.46 1.64 1.48 1.17 1.17 1.49 1.48
f/f2 1.19 1.20 1.08 1.31 1.19 1.18 1.17 0.99
f3/f -1.68 -2.17 -2.82 -1.23 -1.64 -1.69 -1.59 -2.26
f/f6 -1.20 -0.96 -1.14 -1.03 -0.95 -0.94 -1.25 -1.19
tan(HFOV) 0.88 0.90 0.90 0.87 0.87 0.87 0.87 0.87
f/R2 0.22 0.44 0.48 0.16 0.21 0.21 0.18 0.07
R6/R3 1.30 1.29 1.36 1.45 1.30 1.30 1.21 1.17
CT4/CT3 1.36 1.00 1.25 0.93 1.37 1.37 1.00 1.00
CT5/TTL*10 1.62 1.83 2.50 1.34 1.39 1.37 1.82 1.92
T45/T34 0.30 0.32 0.12 0.51 0.33 0.33 0.12 0.14
(T12*2)/TTL 0.16 0.17 0.17 0.60 0.20 0.21 0.52 0.52
以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解，本申请中所涉及的发明范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖在不脱离所述发明构思的情况下，由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。

Claims (39)

  1. 光学影像镜组，沿着光轴由物侧至像侧依序包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其特征在于，
    所述第一透镜具有负光焦度，其物侧面为平面；
    所述第二透镜具有正光焦度；
    所述第五透镜具有正光焦度；
    所述第六透镜具有负光焦度；以及
    所述光学影像镜组的有效焦距f与所述第五透镜的有效焦距f5之间满足：1<f/f5<3。
  2. 根据权利要求1所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第二透镜的有效焦距f2之间满足：0.5<f/f2<1.5。
  3. 根据权利要求1所述的光学影像镜组，其特征在于，所述第四透镜和所述第五透镜在所述光轴上的空气间隔T45与所述第三透镜和所述第四透镜在所述光轴上的空气间隔T34之间满足：0.1<T45/T34<0.6。
  4. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述第一透镜的有效焦距f1与所述光学影像组的有效焦距f之间满足：f1/f<-3。
  5. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第三透镜的有效焦距f3之间满足：-3<f3/f<-1。
  6. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第六透镜的有效焦距f6之间满足：-1.5<f/f6<-0.5。
  7. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第一透镜的像侧面的曲率半径R2之间满足：0<f/R2<1。
  8. 根据权利要求7所述的光学影像镜组，其特征在于，所述第一透镜的有效焦距f1与所述光学影像组的有效焦距f之间满足：-30<f1/f<-3。
  9. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述第三透镜的像侧面的曲率半径R6与所述第二透镜的物侧面的曲率半径R3之间满足：1<R6/R3<1.5。
  10. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述第三透镜在所述光轴上的中心厚度CT3与所述第四透镜在所述光轴上的中心厚度CT4之间满足：0.5<CT4/CT3<1.5。
  11. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述第一透镜和所述第二透镜在所述光轴上的空气间隔T12与所述第一透镜的物侧面至所述光学影像镜组的成像面在所述光轴上的距离TTL之间满足：0.1<(T12*2)/TTL<0.8。
  12. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述第一透镜的物侧面至所述光学影像镜组的成像面在所述光轴上的距离TTL与所述第五透镜的中心厚度 CT5之间满足：1.3<CT5/TTL*10<2.6。
  13. 根据权利要求1-3中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的最大半视场角HFOV满足条件式：tan(HFOV)>0.8。
  14. 光学影像镜组，沿着光轴由物侧至像侧依序包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其特征在于，
    所述第一透镜具有负光焦度，其物侧面为平面；
    所述第二透镜具有正光焦度；
    所述第五透镜具有正光焦度；
    所述第六透镜具有负光焦度；以及
    所述光学影像镜组的有效焦距f与所述第二透镜的有效焦距f2之间满足：0.5<f/f2<1.5。
  15. 根据权利要求14所述的光学影像镜组，其特征在于，所述第四透镜和所述第五透镜在所述光轴上的空气间隔T45与所述第三透镜和所述第四透镜在所述光轴上的空气间隔T34之间满足：0.1<T45/T34<0.6。
  16. 根据权利要求15所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第五透镜的有效焦距f5之间满足：1<f/f5<3。
  17. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述第一透镜的有效焦距f1与所述光学影像组的有效焦距f之间满足：f1/f<-3。
  18. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第三透镜的有效焦距f3之间满足：-3<f3/f<-1。
  19. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第六透镜的有效焦距f6之间满足：-1.5<f/f6<-0.5。
  20. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第一透镜的像侧面的曲率半径R2之间满足：0<f/R2<1。
  21. 根据权利要求20所述的光学影像镜组，其特征在于，所述第一透镜的有效焦距f1与所述光学影像组的有效焦距f之间满足：-30<f1/f<-3。
  22. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述第三透镜的像侧面的曲率半径R6与所述第二透镜的物侧面的曲率半径R3之间满足：1<R6/R3<1.5。
  23. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述第三透镜在所述光轴上的中心厚度CT3与所述第四透镜在所述光轴上的中心厚度CT4之间满足：0.5<CT4/CT3<1.5。
  24. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述第一透镜和所述第二透镜在所述光轴上的空气间隔T12与所述第一透镜的物侧面至所述光学影像镜组的成像面在所述光轴上的距离TTL之间满足：0.1<(T12*2)/TTL<0.8。
  25. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述第一透镜的物侧面至所述光学影像镜组的成像面在所述光轴上的距离TTL与所述第五透镜的中心厚 度CT5之间满足：1.3<CT5/TTL*10<2.6。
  26. 根据权利要求14-16中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的最大半视场角HFOV满足条件式：tan(HFOV)>0.8。
  27. 光学影像镜组，沿着光轴由物侧至像侧依序包括具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，其特征在于，
    所述第一透镜具有负光焦度，其物侧面为平面；
    所述第二透镜具有正光焦度；
    所述第五透镜具有正光焦度；
    所述第六透镜具有负光焦度；以及
    所述光学影像镜组的有效焦距f与所述第三透镜的有效焦距f3之间满足：-3<f3/f<-1。
  28. 根据权利要求27所述的光学影像镜组，其特征在于，所述第四透镜和所述第五透镜在所述光轴上的空气间隔T45与所述第三透镜和所述第四透镜在所述光轴上的空气间隔T34之间满足：0.1<T45/T34<0.6。
  29. 根据权利要求27所述的光学影像镜组，其特征在于，其特征在于，所述光学影像镜组的有效焦距f与所述第六透镜的有效焦距f6之间满足：-1.5<f/f6<-0.5。
  30. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述第一透镜的有效焦距f1与所述光学影像组的有效焦距f之间满足：f1/f<-3。
  31. 根据权利要求30所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第二透镜的有效焦距f2之间满足：0.5<f/f2<1.5。
  32. 根据权利要求30所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第五透镜的有效焦距f5之间满足：1<f/f5<3。
  33. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的有效焦距f与所述第一透镜的像侧面的曲率半径R2之间满足：0<f/R2<1。
  34. 根据权利要求33所述的光学影像镜组，其特征在于，所述第一透镜的有效焦距f1与所述光学影像组的有效焦距f之间满足：-30<f1/f<-3。
  35. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述第三透镜的像侧面的曲率半径R6与所述第二透镜的物侧面的曲率半径R3之间满足：1<R6/R3<1.5。
  36. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述第三透镜在所述光轴上的中心厚度CT3与所述第四透镜在所述光轴上的中心厚度CT4之间满足：0.5<CT4/CT3<1.5。
  37. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述第一透镜和所述第二透镜在所述光轴上的空气间隔T12与所述第一透镜的物侧面至所述光学影像镜组的成像面在所述光轴上的距离TTL之间满足：0.1<(T12*2)/TTL<0.8。
  38. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述第一透镜的物侧面至所述光学影像镜组的成像面在所述光轴上的距离TTL与所述第五透镜的中心厚 度CT5之间满足：1.3<CT5/TTL*10<2.6。
  39. 根据权利要求27-29中任一项所述的光学影像镜组，其特征在于，所述光学影像镜组的最大半视场角HFOV满足条件式：tan(HFOV)>0.8。
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