WO2021168885A1 - 摄像光学镜头 - Google Patents

摄像光学镜头 Download PDF

Info

Publication number
WO2021168885A1
WO2021168885A1 PCT/CN2020/077789 CN2020077789W WO2021168885A1 WO 2021168885 A1 WO2021168885 A1 WO 2021168885A1 CN 2020077789 W CN2020077789 W CN 2020077789W WO 2021168885 A1 WO2021168885 A1 WO 2021168885A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
imaging optical
optical lens
curvature
ttl
Prior art date
Application number
PCT/CN2020/077789
Other languages
English (en)
French (fr)
Inventor
陈杰康
Original Assignee
诚瑞光学(常州)股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 诚瑞光学(常州)股份有限公司 filed Critical 诚瑞光学(常州)股份有限公司
Publication of WO2021168885A1 publication Critical patent/WO2021168885A1/zh

Links

Images

Classifications

    • 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
    • G02B13/004—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 four 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only

Definitions

  • the present invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses.
  • the photosensitive devices of general photographic lenses are nothing more than photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -Oxide Semiconductor Sensor, CMOS Sensor), and due to the advancement of semiconductor manufacturing technology, the pixel size of photosensitive devices has been reduced, and nowadays electronic products are developed with good functions, thin and short appearance, so they have The miniaturized camera lens with good image quality has become the mainstream in the current market.
  • CCD Charge Coupled Device
  • CMOS Sensor complementary metal oxide semiconductor devices
  • the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element lens structure.
  • the four-element lens structure gradually appears in the lens design.
  • the four-element lens has good optical performance, its optical power, lens spacing and lens shape settings are still unreasonable, resulting in the lens structure not being able to meet good optical performance while meeting large aperture, Ultra-thin design requirements.
  • the object of the present invention is to provide an imaging optical lens, which not only has good optical performance, but also satisfies the design requirements of large aperture and ultra-thinness.
  • the embodiments of the present invention provide an imaging optical lens.
  • the imaging optical lens includes, from the object side to the image side, a first lens with a positive refractive power, and a second lens with a negative refractive power.
  • the overall focal length of the imaging optical lens is f
  • the focal length of the second lens is f2
  • the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the curvature of the object side of the first lens
  • the radius of the image side of the first lens is R1, the radius of curvature of the image side of the first lens is R2, the radius of curvature of the object side of the second lens is R3, the radius of curvature of the image side of the second lens is R4, and the axis of the first lens
  • the upper thickness is d1, the on-axis distance from the image side surface of the first lens to the object side surface of the second lens is d2, and satisfies the following relationship: -3.50 ⁇ f2/f ⁇ -1.50; 3.00 ⁇ (R3+ R4)/(R3-R4) ⁇ 8.00; 8.00 ⁇ d1/d2 ⁇ 15.00; 0.50 ⁇ f3/f ⁇ 0.75; -5.00 ⁇ R2/R1 ⁇ -2.50; -0.7
  • the radius of curvature of the object side surface of the fourth lens is R7
  • the radius of curvature of the image side surface of the fourth lens is R8, and the following relationship is satisfied: 2.50 ⁇ R7/R8 ⁇ 5.00.
  • the focal length of the first lens is f1
  • the overall optical length of the imaging optical lens is TTL, and satisfies the following relationship: 0.40 ⁇ f1/f ⁇ 2.53; -1.33 ⁇ (R1+R2)/(R1 -R2) ⁇ -0.29; 0.06 ⁇ d1/TTL ⁇ 0.29.
  • the axial thickness of the second lens is d3, and the overall optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.02 ⁇ d3/TTL ⁇ 0.33.
  • the radius of curvature of the object side surface of the third lens is R5
  • the radius of curvature of the image side surface of the third lens is R6
  • the axial thickness of the third lens is d5
  • the overall optical length of the imaging optical lens is It is TTL and satisfies the following relationship: 0.39 ⁇ (R5+R6)/(R5-R6) ⁇ 2.45; 0.08 ⁇ d5/TTL ⁇ 0.34.
  • 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
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: 0.76 ⁇ (R7+R8)/(R7-R8) ⁇ 3.49; 0.02 ⁇ d7/TTL ⁇ 0.16.
  • the image height of the imaging optical lens is IH
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: TTL/IH ⁇ 2.14.
  • the aperture F number of the imaging optical lens is FNO, and the following relational expression is satisfied: FNO ⁇ 2.05.
  • the combined focal length of the first lens and the second lens is f12, and satisfies the following relationship: 0.61 ⁇ f12/f ⁇ 3.54.
  • the overall optical length of the camera optical lens is TTL, and satisfies the following relational expression: TTL ⁇ 5.39.
  • the imaging optical lens according to the present invention has good optical performance, and has the characteristics of large aperture, wide angle, and ultra-thinness, and is especially suitable for mobile phones composed of high-pixel CCD, CMOS and other imaging elements.
  • Camera lens assembly and WEB camera lens are examples of the imaging optical lens according to the present invention.
  • 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 four lenses.
  • the imaging optical lens 10 includes an aperture S1, a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 in sequence from the object side to the image side.
  • an optical element such as a glass plate GF is arranged between the fourth lens L4 and the image plane Si.
  • the glass plate GF can be a glass cover plate or an optical filter, of course, In other possible embodiments, the glass plate GF can also be arranged in other positions.
  • the first lens L1 has positive refractive power; the second lens L2 has negative refractive power; the third lens L3 has positive refractive power, and the fourth lens L4 has negative refractive power.
  • the overall focal length of the imaging optical lens is defined as f
  • the focal length of the second lens is f2
  • the focal length of the third lens is f3
  • the focal length of the fourth lens is f4.
  • the curvature radius of the object side surface of the first lens is R1
  • the curvature radius of the first lens image side surface is R2
  • the curvature radius of the second lens object side surface is R3
  • the curvature radius of the second lens image side surface is R4
  • the on-axis thickness of the first lens is d1
  • the on-axis distance from the image side surface of the first lens to the object side surface of the second lens is d2, which satisfies the following relationship:
  • Conditional formula (1) specifies the ratio of the focal length of the second lens to the total focal length of the system, which can effectively balance the spherical aberration and field curvature of the system.
  • Conditional formula (2) specifies the shape of the second lens. Within the range specified by the conditional formula, the degree of deflection of light passing through the lens can be relaxed, and aberrations can be effectively reduced.
  • the conditional formula (3) specifies the ratio of the thickness of the first lens to the air gap between the first and second lenses, which helps compress the total length of the optical system within the range of the conditional formula and achieve an ultra-thinning effect. Preferably, 8.03 ⁇ d1/d2 ⁇ 14.75 is satisfied.
  • Conditional formula (4) stipulates the ratio of the focal length of the third lens to the total focal length, and the reasonable distribution of the optical power enables the system to have better imaging quality and lower sensitivity.
  • Conditional formula (5) specifies the shape of the first lens. Within the range specified by the conditional formula, the degree of deflection of light passing through the lens can be relaxed, and aberrations can be effectively reduced.
  • Conditional formula (6) stipulates the ratio of the focal length of the fourth lens to the total focal length, and the reasonable distribution of optical power enables the system to have better imaging quality and lower sensitivity.
  • the curvature radius of the object side surface of the fourth lens L4 is defined as R7, and the curvature radius of the image side surface of the fourth lens L4 is R8, which satisfies the following relationship: 2.50 ⁇ R7/R8 ⁇ 5.00, which defines the shape of the fourth lens, Outside this range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • the object side surface of the first lens L1 is convex at the paraxial position, and the image side surface is convex at the paraxial position.
  • the focal length of the first lens L1 as f1
  • the overall focal length of the imaging optical lens 10 as f, which satisfies the following relationship: 0.40 ⁇ f1/f ⁇ 2.53, which specifies the positive refractive power and the overall focal length of the first lens L1 Ratio.
  • 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.
  • 0.65 ⁇ f1/f ⁇ 2.03 is satisfied.
  • the curvature radius of the object side surface of the first lens L1 is R1
  • the curvature radius of the image side surface of the first lens L2 is R2, which satisfies the following relationship: -1.33 ⁇ (R1+R2)/(R1-R2) ⁇ -0.29
  • -0.83 ⁇ (R1+R2)/(R1-R2) ⁇ -0.36 is satisfied.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.06 ⁇ d1/TTL ⁇ 0.29.
  • it is beneficial to realize ultra-thinness .
  • 0.09 ⁇ d1/TTL ⁇ 0.24 is satisfied.
  • the object side surface of the second lens L2 is convex at the paraxial position, and the image side surface is concave at the paraxial position.
  • the on-axis thickness of the second lens L2 is defined as d3, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d3/TTL ⁇ 0.33. Within the range of the conditional expression, it is beneficial to realize ultra-thin change. Preferably, 0.02 ⁇ d3/TTL ⁇ 0.27 is satisfied.
  • the object side surface of the third lens L3 is concave at the paraxial position, and the image side surface is convex at the paraxial position.
  • the curvature radius of the object side surface of the third lens L3 as R5
  • the curvature radius of the image side surface of the third lens L3 as R6, which satisfies the following relationship: 0.39 ⁇ (R5+R6)/(R5-R6) ⁇ 2.45
  • the shape of the third lens is specified, and within the range specified by the conditional formula, the degree of deflection of the light passing through the lens can be alleviated, and aberrations can be effectively reduced.
  • 0.62 ⁇ (R5+R6)/(R5-R6) ⁇ 1.96 is satisfied.
  • the axial thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.08 ⁇ d5/TTL ⁇ 0.34. Within the range of the conditional formula, it is beneficial to achieve ultra-thinness . Preferably, 0.12 ⁇ d5/TTL ⁇ 0.27 is satisfied.
  • the object side surface of the fourth lens L4 is convex at the paraxial position, and the image side surface is concave at the paraxial position.
  • the curvature radius of the object side surface of the fourth lens L4 is defined as R7, and the curvature radius of the image side surface of the fourth lens L4 is R8, and the following relationship is satisfied: 0.76 ⁇ (R7+R8)/(R7-R8) ⁇ 3.49 , Specifies the shape of the fourth lens L4. When it is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view. Preferably, 1.21 ⁇ (R7+R8)/(R7-R8) ⁇ 2.79 is satisfied.
  • the axial thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d7/TTL ⁇ 0.16. Within the range of the conditional expression, it is beneficial to achieve ultra-thinness . Preferably, 0.03 ⁇ d7/TTL ⁇ 0.13.
  • the image height of the imaging optical lens 10 is IH
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: TTL/IH ⁇ 2.14, thereby achieving ultra-thinness.
  • the F-number FNO of the imaging optical lens 10 is less than or equal to 2.05, a large aperture, and good imaging performance.
  • the overall focal length of the imaging optical lens 10 is f
  • the combined focal length of the first lens L1 and the second lens L2 is f12, which satisfies the following relationship: 0.61 ⁇ f12/f ⁇ 3.54
  • the aberration and distortion of the imaging optical lens 10 can be eliminated, and the back focal length of the imaging optical lens 10 can be suppressed to maintain the miniaturization of the imaging lens system group.
  • it satisfies 0.98 ⁇ f12/f ⁇ 2.83.
  • the overall optical length TTL of the imaging optical lens 10 is less than or equal to 5.39 mm, which is beneficial to realize ultra-thinness.
  • the total optical length TTL is less than or equal to 5.14 mm.
  • the imaging optical lens 10 can meet the design requirements of large aperture, wide-angle, and ultra-thin design while having good optical performance. According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for high-end cameras. Mobile phone camera lens assembly and WEB camera lens composed of CCD, CMOS and other imaging elements for pixels.
  • the imaging optical lens 10 of the present invention will be described below with an example.
  • the symbols described in each example are as follows.
  • the unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
  • TTL Total optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), the unit is mm.
  • the object side and/or the image side of the lens can also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • inflection points and/or stagnation points for specific implementations, refer to the following.
  • Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
  • R The radius of curvature of the optical surface, and the radius of curvature of the center of the lens
  • R1 the radius of curvature of the object side surface of the first lens L1;
  • R2 the radius of curvature of the image side surface of the first lens L1;
  • R3 the radius of curvature of the object side surface of the second lens L2;
  • R4 the radius of curvature of the image side surface of the second lens L2;
  • R5 the radius of curvature of the object side surface of the third lens L3;
  • R6 the radius of curvature of the image side surface of the third lens L3;
  • R7 the radius of curvature of the object side of the fourth lens L4;
  • R8 the radius of curvature of the image side surface of the fourth lens L4;
  • R9 the curvature radius of the object side surface of the glass plate GF
  • R10 the radius of curvature of the image side surface of the glass plate GF
  • d the on-axis thickness of the lens or the on-axis distance between adjacent lenses
  • 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;
  • 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;
  • ndg the refractive index of the d-line of the glass plate GF
  • vg Abbe number of glass plate GF.
  • Table 2 shows the aspheric surface data of each lens of the imaging optical lens 10 provided by 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 in this embodiment preferably uses the aspheric surface shown in the following conditional expression (7), but the specific form of the following conditional expression (7) is only an example. In fact, It is not limited to the aspheric polynomial form shown in the conditional expression (7).
  • 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 embodiment of the present invention.
  • P1R1 and P2R2 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 and P4R2 represent the object side surface and the image side surface of the fourth lens L4, 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 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 10 is 1.252mm
  • the full field of view image height is 2.297mm
  • the diagonal viewing angle is 80.00°
  • large aperture, wide angle and ultra-thin.
  • On-axis and off-axis chromatic aberrations are fully corrected, and they have excellent optical characteristics.
  • FIG. 5 is a schematic diagram of the structure of the imaging optical lens 20 in the second embodiment.
  • 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 of 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 of the 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, and 470 nm pass through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 20 of the second embodiment.
  • the field curvature S in FIG. 8 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction. song.
  • Table 13 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
  • the second embodiment satisfies various conditional expressions.
  • the imaging optical lens 20 has an entrance pupil diameter of 1.359mm, a full field of view image height of 2.297mm, a diagonal field of view angle of 77.80°, a large aperture, wide angle, ultra-thin, and Has excellent optical characteristics.
  • FIG. 9 is a schematic diagram of the structure of the imaging optical lens 30 in the third embodiment.
  • 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.
  • the object side surface of the third lens L3 is convex at the paraxial position.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 of the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 11 and Table 12 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 30 of the embodiment of the present invention.
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 30 of the third embodiment.
  • the field curvature S in FIG. 12 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction. song.
  • Table 13 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
  • the third embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens 30 is 2.051mm
  • the full field of view image height is 2.297mm
  • the diagonal viewing angle is 54.14°
  • the aperture is large, wide-angle, and ultra-thin.
  • On-axis and off-axis chromatic aberrations are fully corrected, and they have excellent optical characteristics.
  • Table 13 lists the values of the corresponding conditional expressions in the first embodiment, the second embodiment, and the third embodiment according to the above conditional expressions, as well as the values of other related parameters.
  • Example 1 Example 2
  • Example 3 f2/f -3.48 -2.62 -1.55 (R3+R4)/(R3-R4) 3.02 4.18 7.93 d1/d2 8.05 12.03 14.50 f3/f 0.51 0.62 0.75 R2/R1 -4.99 -3.74 -2.52 f4/f -0.69 -0.59 -0.44 f 2.566 2.785 4.205 f1 4.334 2.597 3.402 f2 -8.930 -7.292 -6.518 f3 1.309 1.737 3.151 f4 -1.771 -1.649 -1.850 f12 6.057 3.422 5.534 Fno 2.05 2.05 2.05 2.05
  • Fno is the aperture F number of the imaging optical lens.

Landscapes

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

Abstract

一种摄像光学镜头(10,20,30)，由物侧至像侧依序包括：具有正屈折力的第一透镜(L1)，具有负屈折力的第二透镜(L2)，具有正屈折力的第三透镜(L3)，以及具有负屈折力第四透镜(L4)；且满足下列关系式：-3.50≤f2/f≤-1.50；3.00≤(R3+R4)/(R3-R4)≤8.00；8.00≤d1/d2≤15.00；0.50≤f3/f≤0.75；-5.00≤R2/R1≤-2.50；-0.70≤f4/f≤-0.40。摄像光学镜头(10,20,30)能在具有良好光学性能的同时，满足大光圈、广角化、超薄化的设计要求。

Description

摄像光学镜头 技术领域
本发明涉及光学镜头领域，特别涉及一种适用于智能手机、数码相机等手提终端设备，以及监视器、PC镜头等摄像装置的摄像光学镜头。
背景技术
近年来，随着智能手机的兴起，小型化摄影镜头的需求日渐提高，而一般摄影镜头的感光器件不外乎是感光耦合器件(Charge Coupled Device,CCD)或互补性氧化金属半导体器件(Complementary Metal-Oxide Semiconductor Sensor,CMOS Sensor)两种，且由于半导体制造工艺技术的精进，使得感光器件的像素尺寸缩小，再加上现今电子产品以功能佳且轻薄短小的外型为发展趋势，因此，具备良好成像品质的小型化摄像镜头俨然成为目前市场上的主流。
为获得较佳的成像品质，传统搭载于手机相机的镜头多采用三片式透镜结构。然而，随着技术的发展以及用户多样化需求的增多，在感光器件的像素面积不断缩小，且系统对成像品质的要求不断提高的情况下，四片式透镜结构逐渐出现在镜头设计当中，常见的四片式透镜虽然已经具有较好的光学性能，但是其光焦度、透镜间距和透镜形状设置仍然具有一定的不合理性，导致透镜结构无法满足具有良好光学性能的同时，满足大光圈、超薄化的设计要求。
发明内容
针对上述问题，本发明的目的在于提供一种摄像光学镜头，其在具有良好光学性能的同时，满足大光圈、超薄化的设计要求。
为解决上述技术问题，本发明的实施方式提供了一种摄像光学镜头，所述摄像光学镜头，由物侧至像侧依序包括：具有正屈折力的第一透镜，具有负屈折力的第二透镜，具有正屈折力的第三透镜，以及具有负屈折力第四透镜；
所述摄像光学镜头整体的焦距为f，所述第二透镜的焦距为f2，所述第三透镜的焦距为f3，所述第四透镜的焦距为f4，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，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为R4，所述第一透镜的轴上厚度为d1，所述第一透镜的像侧面到所述第二透镜的物侧面的轴上距离为d2，且满足下列关系式：-3.50≤f2/f≤-1.50；3.00≤(R3+R4)/(R3-R4)≤8.00；8.00≤d1/d2≤15.00；0.50≤f3/f≤0.75；-5.00≤R2/R1≤-2.50；-0.70 ≤f4/f≤-0.40。
优选地，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，且满足下列关系式：2.50≤R7/R8≤5.00。
优选地，所述第一透镜的焦距为f1，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：0.40≤f1/f≤2.53；-1.33≤(R1+R2)/(R1-R2)≤-0.29；0.06≤d1/TTL≤0.29。
优选地，所述第二透镜的轴上厚度为d3，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：0.02≤d3/TTL≤0.33。
优选地，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，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：0.39≤(R5+R6)/(R5-R6)≤2.45；0.08≤d5/TTL≤0.34。
优选地，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，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：0.76≤(R7+R8)/(R7-R8)≤3.49；0.02≤d7/TTL≤0.16。
优选地，所述摄像光学镜头的像高为IH，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：TTL/IH≤2.14。
优选地，所述摄像光学镜头的光圈F数为FNO，且满足下列关系式：FNO≤2.05。
优选地，所述第一透镜与所述第二透镜的组合焦距为f12，且满足下列关系式：0.61≤f12/f≤3.54。
优选地，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：TTL≤5.39。
本发明的有益效果在于：根据本发明的摄像光学镜头具有良好光学性能，且具有大光圈、广角化、超薄化的特性，尤其适用于由高像素用的CCD、CMOS等摄像元件构成的手机摄像镜头组件和WEB摄像镜头。
附图说明
为了更清楚地说明本发明实施方式中的技术方案，下面将对实施方式描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1是本发明第一实施方式的摄像光学镜头的结构示意图；
图2是图1所示摄像光学镜头的轴向像差示意图；
图3是图1所示摄像光学镜头的倍率色差示意图；
图4是图1所示摄像光学镜头的场曲及畸变示意图；
图5是本发明第二实施方式的摄像光学镜头的结构示意图；
图6是图5所示摄像光学镜头的轴向像差示意图；
图7是图5所示摄像光学镜头的倍率色差示意图；
图8是图5所示摄像光学镜头的场曲及畸变示意图；
图9是本发明第三实施方式的摄像光学镜头的结构示意图；
图10是图9所示摄像光学镜头的轴向像差示意图；
图11是图9所示摄像光学镜头的倍率色差示意图；
图12是图9所示摄像光学镜头的场曲及畸变示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好地理解本发明而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本发明所要求保护的技术方案。
(第一实施方式)
参考附图，本发明提供了一种摄像光学镜头10。图1所示为本发明第一实施方式的摄像光学镜头10，该摄像光学镜头10包括四个透镜。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以及第四透镜L4。本实施方式中，优选的，在第四透镜L4和像面Si之间设置有玻璃平板GF等光学元件，其中玻璃平板GF可以是玻璃盖板，也可以是光学过滤片(filter)，当然在其他可实施方式中，玻璃平板GF还可以设置在其他位置。
本实施方式中，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具有正屈折力，第四透镜L4具有负屈折力。
在本实施方式中，定义所述摄像光学镜头整体的焦距为f，所述第二透镜的焦距为f2，所述第三透镜的焦距为f3，所述第四透镜的焦距为f4，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，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为R4，所述第一透镜的轴上厚度为d1，所述第一透镜的像侧面到所述第二透镜的物侧面的轴上距离为d2，满足下列关系式：
-3.50≤f2/f≤-1.50     (1)
3.00≤(R3+R4)/(R3-R4)≤8.00     (2)
8.00≤d1/d2≤15.00     (3)
0.50≤f3/f≤0.75      (4)
-5.00≤R2/R1≤-2.50     (5)
-0.70≤f4/f≤-0.40     (6)
条件式(1)规定了第二透镜焦距与系统总焦距的比值，可以有效地平衡系统的球差以及场曲量。
条件式(2)规定了第二透镜的形状，在条件式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。
条件式(3)规定了第一透镜厚度与第一第二透镜空气间隔的比值，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8.03≤d1/d2≤14.75。
条件式(4)规定了第三透镜焦距与总焦距的比值，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。
条件式(5)规定了第一透镜的形状，在条件式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。
条件式(6)规定了第四透镜焦距与总焦距的比值，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。
定义所述第四透镜L4物侧面的曲率半径为R7，所述第四透镜L4像侧面的曲率半径为R8，满足下列关系式：2.50≤R7/R8≤5.00，规定了第四透镜的形状，在此范围外时，随着超薄广角化的发展，有利于补正轴外画角的像差。
本实施方式中，所述第一透镜L1的物侧面于近轴处为凸面，像侧面于近轴处为凸面。
定义所述第一透镜L1的焦距为f1，所述摄像光学镜头10整体的焦距为f，满足下列关系式：0.40≤f1/f≤2.53，规定了第一透镜L1的正屈折力与整体焦距的比值。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0.65≤f1/f≤2.03。
所述第一透镜L1物侧面的曲率半径为R1，所述第一透镜L2像侧面的曲率半径为R2，满足下列关系式：-1.33≤(R1+R2)/(R1-R2)≤-0.29，合理控制第一透镜L1的形状，使得第一透镜L1能够有效地校正系统球差。优选地，满足-0.83≤(R1+R2)/(R1-R2)≤-0.36。
所述第一透镜L1的轴上厚度为d1，所述摄像光学镜头10的光学总长为TTL，满足下列关系式：0.06≤d1/TTL≤0.29，在条件式范围内，有利于实现超薄化。优选地，满足0.09≤d1/TTL≤0.24。
本实施方式中，所述第二透镜L2的物侧面于近轴处为凸面，像侧面于近轴处为凹面。
定义所述第二透镜L2的轴上厚度为d3，所述摄像光学镜头10的光学总长为TTL，满足下列关系式：0.02≤d3/TTL≤0.33，在条件式范围内，有利于实现超薄化。优选地，满足0.02≤d3/TTL≤0.27。
本实施方式中，所述第三透镜L3的物侧面于近轴处为凹面，像侧面于近轴处为凸面。
定义所述第三透镜L3物侧面的曲率半径为R5，所述第三透镜L3像侧面的曲率半径为R6，满足下列关系式：0.39≤(R5+R6)/(R5-R6)≤2.45，规定了第三透镜的形状，在条件式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。优选地，满足0.62≤(R5+R6)/(R5-R6)≤1.96。
所述第三透镜L3的轴上厚度为d5，所述摄像光学镜头10的光学总长为TTL，满足下列关系式：0.08≤d5/TTL≤0.34，在条件式范围内，有利于实现超薄化。优选地，满足0.12≤d5/TTL≤0.27。
本实施方式中，所述第四透镜L4的物侧面于近轴处为凸面，像侧面于近轴处为凹面。
定义所述第四透镜L4物侧面的曲率半径为R7，所述第四透镜L4像侧面的曲率半径为R8，且满足下列关系式：0.76≤(R7+R8)/(R7-R8)≤3.49，规定了第四透镜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1.21≤(R7+R8)/(R7-R8)≤2.79。
所述第四透镜L4的轴上厚度为d7，所述摄像光学镜头10的光学总长为TTL，满足下列关系式：0.02≤d7/TTL≤0.16，在条件式范围内，有利于实现超薄化。优选地，0.03≤d7/TTL≤0.13。
本实施方式中，所述摄像光学镜头10的像高为IH，所述摄像光学镜头10的光学总长为TTL，满足下列关系式：TTL/IH≤2.14，从而实现超薄化。
本实施方式中，所述摄像光学镜头10的光圈F数FNO小于或等于2.05，大光圈，成像性能好。
本实施方式中，所述摄像光学镜头10整体的焦距为f，所述第一透镜L1与所述第二透镜L2的组合焦距为f12，满足下列关系式：0.61≤f12/f≤3.54，在条件式范围内，可消除所述摄像光学镜头10的像差与歪曲，且可压制摄像光学镜头10后焦距，维持影像镜片系统组小型化。优选的，满足0.98≤f12/f≤2.83。
本实施方式中，所述摄像光学镜头10整体的光学总长TTL小于或等于5.39毫米，有利于实现超薄化。优选地，光学总长TTL小于或等于5.14毫米。
当满足上述关系时，使得摄像光学镜头10具有良好光学性能的同时，能够满足大光圈、广角化、超薄化的设计要求；根据该光学镜头10的特性，该光学镜头10尤其适用于由高像素用的CCD、CMOS等摄像元件构成的手机摄像镜头组件和WEB摄像镜头。
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。
TTL：光学总长(第一透镜L1的物侧面到成像面的轴上距离)，单位为mm。
优选的，所述透镜的物侧面和/或像侧面上还可以设置有反曲点和/或驻点，以满足高品质的成像需求，具体的可实施方案，参下所述。
表1、表2示出本发明第一实施方式的摄像光学镜头10的设计数据。
【表1】
Figure PCTCN2020077789-appb-000001
上表中各符号的含义如下。
R：光学面的曲率半径、透镜时为中心曲率半径；
S1：光圈；
R1：第一透镜L1的物侧面的曲率半径；
R2：第一透镜L1的像侧面的曲率半径；
R3：第二透镜L2的物侧面的曲率半径；
R4：第二透镜L2的像侧面的曲率半径；
R5：第三透镜L3的物侧面的曲率半径；
R6：第三透镜L3的像侧面的曲率半径；
R7：第四透镜L4的物侧面的曲率半径；
R8：第四透镜L4的像侧面的曲率半径；
R9：玻璃平板GF的物侧面的曲率半径；
R10：玻璃平板GF的像侧面的曲率半径；
d：透镜的轴上厚度或相邻透镜之间的轴上距离；
d0：光圈S1到第一透镜L1的物侧面的轴上距离；
d1：第一透镜L1的轴上厚度；
d2：第一透镜L1的像侧面到第二透镜L2的物侧面的轴上距离；
d3：第二透镜L2的轴上厚度；
d4：第二透镜L2的像侧面到第三透镜L3的物侧面的轴上距离；
d5：第三透镜L3的轴上厚度；
d6：第三透镜L3的像侧面到第四透镜L4的物侧面的轴上距离；
d7：第四透镜L4的轴上厚度；
d8：第四透镜L4的像侧面到光学过滤片GF的物侧面的轴上距离；
d9：玻璃平板GF的轴上厚度；
d10：玻璃平板GF的像侧面到像面Si的轴上距离；
nd：d线的折射率；
nd1：第一透镜L1的d线的折射率；
nd2：第二透镜L2的d线的折射率；
nd3：第三透镜L3的d线的折射率；
nd4：第四透镜L4的d线的折射率；
ndg：玻璃平板GF的d线的折射率；
vd：阿贝数；
v1：第一透镜L1的阿贝数；
v2：第二透镜L2的阿贝数；
v3：第三透镜L3的阿贝数；
v4：第四透镜L4的阿贝数；
vg：玻璃平板GF的阿贝数。
表2示出了本发明第一实施方式提供的摄像光学镜头10的各透镜的非球面数据。
【表2】
Figure PCTCN2020077789-appb-000002
其中，k是圆锥系数，A4、A6、A8、A10、A12、A14、A16、A18、A20是非球面系数。
IH：像高
y＝(x 2/R)/{1+[1-(1+k)(x 2/R 2)] 1/2}+A4x 4+A6x 6+A8x 8+A10x 10+A12x 12+A14x 14+A16x 16+A18x 18+A20x 20    (7)
需要说明的是，本实施方式中各透镜的非球面优选的使用下述条件式(7)所示的非球面，但是，下述条件式(7)的具体形式仅为一个示例，实际上，并不限于条件式(7)中表示的非球面多项式形式。
表3、表4示出本发明实施例的摄像光学镜头10中各透镜的反曲点以及驻点设计数据。其中，P1R1、P2R2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。“反曲点位置”栏位对应数据为各透镜表面所设置的反曲点到摄像光学镜头10光轴的垂直距离。“驻点位置”栏位对应数据为各透镜表面所设置的驻点到摄像光学镜头10光轴的垂直距离。
【表3】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3
P1R1 1 0.525    
P1R2 0      
P2R1 3 0.205 0.725 0.835
P2R2 0      
P3R1 2 0.805 1.105  
P3R2 1 0.935    
P4R1 3 0.505 1.365 1.925
P4R2 1 0.535    
【表4】
  驻点个数 驻点位置1 驻点位置2
P1R1 0    
P1R2 0    
P2R1 1 0.355  
P2R2 0    
P3R1 1 1.025  
P3R2 0    
P4R1 2 0.975 1.715
P4R2 1 1.425  
图2、图3分别示出了波长为650nm、610nm、555nm、510nm和470nm的光经过第一实施方式的摄像光学镜头10后的轴向像差以及倍率色差示意图。图4则示出了，波长为555nm的光经过第一实施方式的摄像光学镜头10后的场曲及畸变示意图，图4的场曲S是弧矢方向的场曲，T是子午方向的场曲。
后出现的表13示出了各实例1、2、3中各种数值与条件式中已规定的参数所对应的值。
如表13所示,第一实施方式满足各条件式。
在本实施方式中，所述摄像光学镜头10的入瞳直径为1.252mm，全视场像高为2.297mm，对角线方向的视场角为80.00°，大光圈、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。
(第二实施方式)
图5是第二实施方式中摄像光学镜头20的结构示意图，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。
表5、表6示出本发明第二实施方式的摄像光学镜头20的设计数据。
【表5】
Figure PCTCN2020077789-appb-000003
Figure PCTCN2020077789-appb-000004
表6示出了本发明第二实施方式的摄像光学镜头20的各透镜的非球面数据。
【表6】
Figure PCTCN2020077789-appb-000005
表7、表8示出本发明实施例的摄像光学镜头20中各透镜的反曲点以及驻点设计数据。
【表7】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3
P1R1 1 0.575    
P1R2 0      
P2R1 2 0.235 0.495  
P2R2 0      
P3R1 0      
P3R2 2 0.835 1.175  
P4R1 3 0.235 1.005 1.635
P4R2 1 0.415    
【表8】
  驻点个数 驻点位置1 驻点位置2
P1R1 0    
P1R2 0    
P2R1 0    
P2R2 0    
P3R1 0    
P3R2 0    
P4R1 2 0.435 1.525
P4R2 1 1.085  
图6、图7分别示出了波长为650nm、610nm、555nm、510nm和470nm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，图8的场曲S是弧矢方向的场曲，T是子午方向的场曲。
后出现的表13示出了各实例1、2、3中各种数值与条件式中已规定的参数所对应的值。
如表13所示,第二实施方式满足各条件式。
在本实施方式中，所述摄像光学镜头20的入瞳直径为1.359mm，全视场像高为2.297mm，对角线方向的视场角为77.80°，大光圈、广角、超薄，且具有优秀的光学特征。
(第三实施方式)
图9是第三实施方式中摄像光学镜头30的结构示意图，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。
其中，本实施方式中，第三透镜L3的物侧面于近轴处为凸面。
表9、表10示出了本发明第三实施方式的摄像光学镜头30的设计数据。
【表9】
Figure PCTCN2020077789-appb-000006
表10示出了本发明第三实施方式的摄像光学镜头30的各透镜的非球面数据。
【表10】
Figure PCTCN2020077789-appb-000007
表11、表12示出本发明实施例的摄像光学镜头30中各透镜的反曲点以及驻点设计数据。
【表11】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3
P1R1 1 0.925    
P1R2 0      
P2R1 2 0.685 0.965  
P2R2 0      
P3R1 0      
P3R2 1 0.815    
P4R1 3 0.105 0.765 1.185
P4R2 3 0.235 0.755 1.305
【表12】
  驻点个数 驻点位置1 驻点位置2 驻点位置3
P1R1 0      
P1R2 0      
P2R1 0      
P2R2 0      
P3R1 0      
P3R2 1 1.215    
P4R1 1 0.185    
P4R2 3 0.555 1.005 1.535
图10、图11分别示出了波长为650nm、610nm、555nm、510nm和470nm的光经过第三实施方式的摄像光学镜头30后的轴向像差以及倍率色差示意图。图12则示出了，波长为555nm的光经过第三实施方式的摄像光学镜头30后的场曲及畸变示意图，图12的场曲S是弧矢方向的场曲，T是子午方向的场曲。
后出现的表13示出了各实例1、2、3中各种数值与条件式中已规定的参数所对应的值。
如表13所示,第三实施方式满足各条件式。
在本实施方式中，所述摄像光学镜头30的入瞳直径为2.051mm，全视场像高为2.297mm，对角线方向的视场角为54.14°，大光圈、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。
以下表13按照上述条件式列出了第一实施方式、第二实施方式和第三实施方式中对应各条件式的数值，以及其他相关参数的取值。
【表13】
参数及条件式 实施例1 实施例2 实施例3
f2/f -3.48 -2.62 -1.55
(R3+R4)/(R3-R4) 3.02 4.18 7.93
d1/d2 8.05 12.03 14.50
f3/f 0.51 0.62 0.75
R2/R1 -4.99 -3.74 -2.52
f4/f -0.69 -0.59 -0.44
f 2.566 2.785 4.205
f1 4.334 2.597 3.402
f2 -8.930 -7.292 -6.518
f3 1.309 1.737 3.151
f4 -1.771 -1.649 -1.850
f12 6.057 3.422 5.534
Fno 2.05 2.05 2.05
其中，Fno为摄像光学镜头的光圈F数。
本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施方式，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。

Claims (10)

  1. 一种摄像光学镜头，其特征在于，所述摄像光学镜头，由物侧至像侧依序包括：具有正屈折力的第一透镜，具有负屈折力的第二透镜，具有正屈折力的第三透镜，以及具有负屈折力第四透镜；
    所述摄像光学镜头整体的焦距为f，所述第二透镜的焦距为f2，所述第三透镜的焦距为f3，所述第四透镜的焦距为f4，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，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为R4，所述第一透镜的轴上厚度为d1，所述第一透镜的像侧面到所述第二透镜的物侧面的轴上距离为d2，且满足下列关系式：
    -3.50≤f2/f≤-1.50；
    3.00≤(R3+R4)/(R3-R4)≤8.00；
    8.00≤d1/d2≤15.00；
    0.50≤f3/f≤0.75；
    -5.00≤R2/R1≤-2.50；
    -0.70≤f4/f≤-0.40。
  2. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，且满足下列关系式：
    2.50≤R7/R8≤5.00。
  3. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第一透镜的焦距为f1，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：
    0.40≤f1/f≤2.53；
    -1.33≤(R1+R2)/(R1-R2)≤-0.29；
    0.06≤d1/TTL≤0.29。
  4. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第二透镜的轴上厚度为d3，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：
    0.02≤d3/TTL≤0.33。
  5. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第三透镜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，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：
    0.39≤(R5+R6)/(R5-R6)≤2.45；
    0.08≤d5/TTL≤0.34。
  6. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第四透镜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：
    0.76≤(R7+R8)/(R7-R8)≤3.49；
    0.02≤d7/TTL≤0.16。
  7. 根据权利要求1所述的摄像光学镜头，其特征在于，所述摄像光学镜头的像高为IH，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    TTL/IH≤2.14。
  8. 根据权利要求1所述的摄像光学镜头，其特征在于，所述摄像光学镜头的光圈F数为FNO，且满足下列关系式：
    FNO≤2.05。
  9. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第一透镜与所述第二透镜的组合焦距为f12，且满足下列关系式：
    0.61≤f12/f≤3.54。
  10. 根据权利要求1所述的摄像光学镜头，其特征在于，所述摄像光学镜头整体的光学总长为TTL，且满足下列关系式：TTL≤5.39。
PCT/CN2020/077789 2020-02-24 2020-03-04 摄像光学镜头 WO2021168885A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010111413.2 2020-02-24
CN202010111413.2A CN111198434B (zh) 2020-02-24 2020-02-24 摄像光学镜头

Publications (1)

Publication Number Publication Date
WO2021168885A1 true WO2021168885A1 (zh) 2021-09-02

Family

ID=70745042

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/077789 WO2021168885A1 (zh) 2020-02-24 2020-03-04 摄像光学镜头

Country Status (4)

Country Link
US (1) US11353683B2 (zh)
JP (1) JP6791612B1 (zh)
CN (1) CN111198434B (zh)
WO (1) WO2021168885A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113281880B (zh) * 2021-05-10 2022-08-23 江西晶超光学有限公司 成像系统、镜头模组及电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080043343A1 (en) * 2006-08-17 2008-02-21 Chen Chun Shan Image Pickup Lens Assembly
CN101135766A (zh) * 2006-08-31 2008-03-05 大立光电股份有限公司 取像用光学镜组
US20090207506A1 (en) * 2008-02-18 2009-08-20 Tang Hsiang Chi Optical Lens System for Taking Image
CN101738707A (zh) * 2008-11-10 2010-06-16 大立光电股份有限公司 四片式摄影光学镜组
CN101762864A (zh) * 2008-12-25 2010-06-30 大立光电股份有限公司 取像光学系统
CN102540418A (zh) * 2010-12-15 2012-07-04 大立光电股份有限公司 光学摄影透镜组

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4658511B2 (ja) * 2003-04-23 2011-03-23 オリンパス株式会社 結像光学系、それを備えた撮像装置及び電子機器
KR100703469B1 (ko) * 2005-07-07 2007-04-03 삼성전자주식회사 촬상용 광학계
JP5096057B2 (ja) * 2007-07-10 2012-12-12 富士フイルム株式会社 撮像レンズ、およびカメラモジュールならびに撮像機器
JP2012068292A (ja) * 2010-09-21 2012-04-05 Konica Minolta Opto Inc 撮像レンズ、撮像装置及び携帯端末
TWI402555B (zh) * 2010-12-02 2013-07-21 Largan Precision Co Ltd 攝影用光學系統
TWI422899B (zh) * 2011-06-22 2014-01-11 Largan Precision Co Ltd 光學影像鏡片組
KR101701007B1 (ko) * 2014-11-28 2017-01-31 삼성전기주식회사 렌즈 모듈
TWI561849B (en) * 2015-03-06 2016-12-11 Ability Opto Electronics Technology Co Ltd Optical image capturing system
JP6587292B2 (ja) * 2017-06-02 2019-10-09 カンタツ株式会社 撮像レンズ
CN109828356B (zh) * 2018-12-27 2021-05-04 瑞声光学解决方案私人有限公司 摄像光学镜头
KR102271340B1 (ko) * 2019-06-17 2021-07-01 삼성전기주식회사 촬상 광학계
US11333848B2 (en) * 2020-01-06 2022-05-17 Newmax Technology Co., Ltd. Four-piece optical lens system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080043343A1 (en) * 2006-08-17 2008-02-21 Chen Chun Shan Image Pickup Lens Assembly
CN101135766A (zh) * 2006-08-31 2008-03-05 大立光电股份有限公司 取像用光学镜组
US20090207506A1 (en) * 2008-02-18 2009-08-20 Tang Hsiang Chi Optical Lens System for Taking Image
CN101738707A (zh) * 2008-11-10 2010-06-16 大立光电股份有限公司 四片式摄影光学镜组
CN101762864A (zh) * 2008-12-25 2010-06-30 大立光电股份有限公司 取像光学系统
CN102540418A (zh) * 2010-12-15 2012-07-04 大立光电股份有限公司 光学摄影透镜组

Also Published As

Publication number Publication date
CN111198434A (zh) 2020-05-26
CN111198434B (zh) 2021-07-30
JP6791612B1 (ja) 2020-11-25
US20210263269A1 (en) 2021-08-26
US11353683B2 (en) 2022-06-07
JP2021135479A (ja) 2021-09-13

Similar Documents

Publication Publication Date Title
WO2021168910A1 (zh) 摄像光学镜头
WO2021031233A1 (zh) 摄像光学镜头
WO2021031236A1 (zh) 摄像光学镜头
WO2021237781A1 (zh) 摄像光学镜头
WO2021196257A1 (zh) 摄像光学镜头
WO2021248576A1 (zh) 摄像光学镜头
WO2021097929A1 (zh) 摄像光学镜头
WO2021248577A1 (zh) 摄像光学镜头
WO2021031285A1 (zh) 摄像光学镜头
WO2021031275A1 (zh) 摄像光学镜头
WO2021031277A1 (zh) 摄像光学镜头
WO2021027022A1 (zh) 摄像光学镜头
WO2021097925A1 (zh) 摄像光学镜头
WO2021031274A1 (zh) 摄像光学镜头
WO2022047985A1 (zh) 摄像光学镜头
WO2021031281A1 (zh) 摄像光学镜头
WO2021168884A1 (zh) 摄像光学镜头
WO2021168887A1 (zh) 摄像光学镜头
WO2021097952A1 (zh) 摄像光学镜头
WO2021097928A1 (zh) 摄像光学镜头
WO2021168879A1 (zh) 摄像光学镜头
WO2021168886A1 (zh) 摄像光学镜头
WO2021168889A1 (zh) 摄像光学镜头
WO2021168885A1 (zh) 摄像光学镜头
WO2022057050A1 (zh) 摄像光学镜头

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20921368

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20921368

Country of ref document: EP

Kind code of ref document: A1