WO2018223616A1 - 成像镜头 - Google Patents
成像镜头 Download PDFInfo
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- WO2018223616A1 WO2018223616A1 PCT/CN2017/111539 CN2017111539W WO2018223616A1 WO 2018223616 A1 WO2018223616 A1 WO 2018223616A1 CN 2017111539 W CN2017111539 W CN 2017111539W WO 2018223616 A1 WO2018223616 A1 WO 2018223616A1
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- lens
- imaging
- imaging lens
- focal length
- effective focal
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
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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
Definitions
- the present invention relates to an imaging lens, and more particularly to an imaging lens including six lenses.
- the current mainstream imaging lens usually adopts a wide-angle optical system, but it is not conducive to shooting a distant object, and cannot obtain a clear image at a distant place, and the user experience is not good.
- the dual-camera technology can achieve high spatial angular resolution through the telephoto lens, and then achieve high-frequency information enhancement through image fusion technology.
- the design of the telephoto lens is particularly critical, and how to design the lens to meet both telephoto and ultra-thin characteristics is an urgent problem to be solved.
- the present invention provides an imaging lens that can be adapted for use in a portable electronic product that can at least solve or partially address at least one of the above disadvantages of the prior art.
- An aspect of the present application provides an imaging lens having a total effective focal length f and sequentially including a first lens, a second lens, a third lens, and a fourth lens from the object side to the image side along the optical axis. a fifth lens and a sixth lens.
- the first lens may have a positive power with a convex side; the second lens has a negative power; and the third lens, the fourth lens, the fifth lens, and the sixth lens each have a positive power or a negative power.
- the distance TTL of the object side of the first lens to the imaging plane of the imaging lens on the optical axis and the total effective focal length f of the imaging lens can satisfy TTL/f ⁇ 1.05.
- an imaging lens having a total effective focal length f and sequentially including a first lens, a second lens, a third lens, and a fourth lens from the object side to the image side along the optical axis.
- a fifth lens and a sixth lens The first lens may have a positive power with a convex side; the second lens has a negative power; and the third lens, the fourth lens, the fifth lens, and the sixth lens each have a positive power or a negative power.
- the total effective focal length f of the imaging lens and the effective focal length f5 of the fifth lens can satisfy -2.0 ⁇ f / f5 ⁇ 1.0.
- Another aspect of the present application also provides an imaging lens having a total effective focal length f and sequentially including a first lens, a second lens, a third lens, and a fourth from the object side to the image side along the optical axis. a lens, a fifth lens, and a sixth lens.
- the first lens may have a positive power with a convex side; the second lens has a negative power; and the third lens, the fourth lens, the fifth lens, and the sixth lens each have a positive power or a negative power.
- the total effective focal length f of the imaging lens and the radius of curvature R10 of the side surface of the fifth lens image may satisfy -2.0 ⁇ f/R10 ⁇ 0.
- the distance TTL of the object side of the first lens to the imaging surface of the imaging lens on the optical axis is TTL/ImgH ⁇ between half the ImgH of the diagonal of the effective pixel area on the imaging surface of the imaging lens. 2.0.
- f/EPD ⁇ 2.7 may be satisfied between the total effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens.
- the total effective focal length f of the imaging lens and the center thickness CT6 of the sixth lens on the optical axis may satisfy f/CT6 ⁇ 15.
- the center thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens at the maximum radius may satisfy CT6/ET6 ⁇ 1.3.
- the center thickness CT4 of the fourth lens on the optical axis and the total effective focal length f of the imaging lens may satisfy 0 ⁇ CT4/f ⁇ 0.5.
- the third lens and the fourth lens may satisfy 0 ⁇ T34 / f ⁇ 0.2 between the air interval T34 on the optical axis and the total effective focal length f of the imaging lens.
- 0 ⁇ f4/f3 ⁇ 0.5 may be satisfied between the effective focal length f4 of the fourth lens and the effective focal length f3 of the third lens.
- the total effective focal length f of the imaging lens and the effective focal length f6 of the sixth lens may satisfy -2.0 ⁇ f / f6 ⁇ 0.5.
- the radius of curvature R1 of the object side of the first lens and the total effective focal length f of the imaging lens satisfy 0 ⁇ R1/f ⁇ 0.5.
- ⁇ 0.5 may be satisfied between the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R2 of the image side surface of the first lens.
- the present application may, for example, employ a plurality of (eg, six) lenses by properly distributing the power, the face shape of each lens in the imaging lens, the center thickness of each lens, and the air separation of the lenses on the optical axis.
- the imaging lens achieves the effect of telephoto while satisfying miniaturization.
- FIG. 1 is a schematic structural view of an imaging lens 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 imaging lens of Embodiment 1;
- FIG. 3 is a schematic structural view of an imaging lens 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 imaging lens of Embodiment 2.
- FIG. 5 is a schematic structural view of an imaging lens 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 imaging lens of Embodiment 3.
- FIG. 7 is a schematic structural view of an imaging lens 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 imaging lens of Embodiment 4.
- FIG. 9 is a schematic structural view of an imaging lens 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 imaging lens of Embodiment 5;
- FIG. 11 is a schematic structural view of an imaging lens 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 imaging lens of Example 6;
- FIG. 13 is a schematic structural view of an imaging lens 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 imaging lens of Embodiment 7;
- FIG. 15 is a schematic structural view of an imaging lens 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 imaging lens of Example 8.
- first, second, third, 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 or a third lens without departing from the teachings of the present application.
- the thickness, size and shape of the lens have been slightly exaggerated for convenience of explanation. shape.
- 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.
- a 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 imaging lens according to an exemplary embodiment of the present application includes, for example, six lenses having powers, 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 positive power
- the object side may be a convex surface
- the second lens may have a negative power
- the third lens to the sixth lens may each have a positive light Power or negative power.
- the first lens provides the primary positive power required for the entire optical system, and most of the positive power is concentrated on the object side of the first lens.
- the radius of curvature of the side surface of the first lens By constraining the radius of curvature of the side surface of the first lens to a reasonable range, the optical power of the entire optical system can be ensured without causing a large amount of spherical aberration due to the bending of the side of the first lens object being too strong, thereby Causes an increase in the aberration contribution rate of each mirror surface in the rear system.
- 0 ⁇ R1/f ⁇ 0.5 may be satisfied between the radius of curvature R1 of the object side of the first lens and the total effective focal length f of the imaging lens, and more specifically, R1 and f may further satisfy 0.24 ⁇ R1/f ⁇ 0.32.
- the relative range of the radius of curvature of the first lens side and the image side can be reasonably controlled to effectively control the coma of each field of view of the optical system, thereby obtaining good image quality.
- the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R2 of the image side surface of the first lens may satisfy
- the correction of the field-of-view aberration can be effectively achieved, which is advantageous for achieving good image quality of the edge field of the optical system.
- 0 ⁇ f4/f3 ⁇ 0.5 may be satisfied between the effective focal length f4 of the fourth lens and the effective focal length f3 of the third lens, and more specifically, f4 and f3 may further satisfy 0.01 ⁇ f4/f3 ⁇ 0.37.
- the total effective focal length f of the imaging lens and the effective focal length f6 of the sixth lens may satisfy -2.0 ⁇ f / f6 ⁇ 0.5, and more specifically, f and f6 may further satisfy -1.63 ⁇ f / f6 ⁇ 0.12.
- the total effective focal length f of the imaging lens and the effective focal length f5 of the fifth lens may satisfy -2.0 ⁇ f / f5 ⁇ 1.0, and more specifically, f and f5 may further satisfy -1.61 ⁇ f / f5 ⁇ 0.75.
- the astigmatism contribution rate of the fifth lens is in a reasonable range, thereby effectively balancing the astigmatism of the system, so that the system obtains good imaging quality.
- the total effective focal length f of the imaging lens and the radius of curvature R10 of the image side of the fifth lens may satisfy -2.0 ⁇ f / R10 ⁇ 0, and more specifically, f and R 10 may further satisfy -1.65 ⁇ f/R10 ⁇ -0.63.
- the fifth lens has a good spherical aberration balance capability, thereby obtaining good on-axis imaging quality.
- the center thickness of each lens and the spacing distance between the lenses can be reasonably arranged.
- the center thickness CT4 of the fourth lens on the optical axis and the total effective focal length f of the imaging lens may satisfy 0 ⁇ CT4/f ⁇ 0.5, and more specifically, CT4 and f may further satisfy 0.04 ⁇ CT4/f ⁇ 0.14.
- the center thickness CT6 of the sixth lens on the optical axis and the total effective focal length f of the imaging lens may satisfy f/CT6 ⁇ 15, and more specifically, CT6 and f may further satisfy 15.27 ⁇ f/ CT6 ⁇ 30.41.
- the center thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens at the maximum radius can satisfy CT6/ET6 ⁇ 1.3, and more specifically, CT6 and ET6 can further satisfy 0.34 ⁇ CT6/ET6. ⁇ 1.21.
- the air gap T34 of the third lens and the fourth lens on the optical axis may satisfy 0 ⁇ T34/f ⁇ 0.2 between the total effective focal length f of the imaging lens, and more specifically, T34 and f may further satisfy 0.05 ⁇ T34/f. ⁇ 0.14.
- the large image plane and high pixel requirements of the imaging lens are achieved by constraining the ratio of the total length of the lens to the height of the image.
- the on-axis distance TTL of the object side of the first lens to the imaging surface of the imaging lens may be TTL/ImgH ⁇ 2.0, more specifically between half of the diagonal length ImgH of the effective pixel area on the imaging surface of the imaging lens, more specifically , TTL and ImgH can further satisfy 1.48 ⁇ TTL / ImgH ⁇ 2.00.
- the on-axis distance TTL of the object side of the first lens to the imaging surface of the imaging lens and the total effective focal length f of the imaging lens can satisfy TTL/f ⁇ 1.05, and more specifically, TTL and f are further
- the step can satisfy 0.92 ⁇ TTL / f ⁇ 1.05.
- the lens parameter satisfies the conditional expression TTL/f ⁇ 1.05, the total length of the optical system can be effectively controlled, so that the optical system can be applied to a terminal device such as a mobile phone that has strict requirements on the size of the optical system.
- the total effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens can satisfy f/EPD ⁇ 2.7, and more specifically, f and EPD can further satisfy 2.47 ⁇ f / EPD ⁇ 2.69.
- the conditional expression f/EPD ⁇ 2.7 is satisfied, so that the lens obtains a reasonable diffraction resolution, thereby obtaining a reasonable design and a true resolution ability after processing.
- the imaging lens of the present application may further include a filter for correcting the color deviation.
- the filter may be disposed between, for example, the sixth lens and the imaging surface.
- the filters can be placed at other locations as desired.
- the imaging lens according to the above embodiment of the present application may employ a plurality of lenses, such as the six described above.
- a plurality of lenses such as the six described above.
- the imaging quality makes the imaging lens 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.
- the aspherical lens 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, and has the advantages of improving distortion and improving astigmatic aberration. With an aspherical lens, the aberrations that occur during imaging can be eliminated as much as possible, thereby improving the image quality of the lens.
- the imaging lens is not limited to including six lenses.
- the imaging lens can also include other numbers of lenses if desired.
- FIGS. 1 through 2D An imaging lens according to Embodiment 1 of the present application will be described below with reference to FIGS. 1 through 2D.
- figure 1 A schematic structural view of an imaging lens according to Embodiment 1 of the present application is shown.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the third lens E3 has positive refractive power, and both the object side surface S5 and the image side surface S6 are aspherical surfaces;
- the fourth lens E4 has positive refractive power, and both the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has a negative
- the optical power, the object side surface S9 and the image side surface S10 are both aspherical surfaces;
- the sixth lens E6 has a negative refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- the imaging lens may further include a filter E7 having an object side S13 and an image side S14.
- a stop STO for limiting the light beam may be provided between, for example, the object side and the first lens E1 to improve the image quality. 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 imaging lens in Example 1, in which the unit of curvature radius and thickness are both millimeters (mm).
- the radius of curvature R1 of the object side surface S1 of the first lens E1 is the first through
- the curvature radius R2 of the image side surface S2 of the mirror E1 satisfies
- 0.26.
- each aspherical surface type x 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 coefficient A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 which can be used for each of the aspherical mirrors S1 - S12 in the embodiment 1. .
- Table 3 gives the effective focal lengths f1 to f6 of the lenses of Embodiment 1, the total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 2A shows an axial chromatic aberration curve of the imaging lens of Embodiment 1, which indicates that light of different wavelengths is deviated from a focus point after passing through the imaging lens.
- 2B shows an astigmatism curve of the imaging lens of Embodiment 1, which shows meridional field curvature and sagittal image plane curvature.
- 2C shows a distortion curve of the imaging lens of Embodiment 1, which shows distortion magnitude values in the case of different viewing angles.
- 2D shows a magnification chromatic aberration curve of the imaging lens of Embodiment 1, which indicates a deviation of different image heights on the imaging plane after the light rays pass through the imaging lens.
- the imaging lens given in Embodiment 1 can achieve good imaging quality.
- FIG. 3 is a block diagram showing the structure of an imaging lens according to Embodiment 2 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, the object side surface S3 is a spherical surface, and the image side surface S4 is an aspherical surface;
- the lens E3 has positive refractive power, the object side surface S5 is aspherical, the image side surface S6 is a spherical surface,
- the fourth lens E4 has positive refractive power, the object side surface S7 is aspherical, the image side surface S8 is spherical, and
- the fifth lens E5 It has a positive power, and both the object side surface S9 and the image side surface S10 are aspherical surfaces; and the sixth lens E6 has a negative refractive power, and both the object side surface S11 and
- a stop STO for limiting the light beam may be provided between the second lens E2 and the third lens E3 to improve the image quality.
- Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging plane S13.
- Table 4 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 2, in which the unit of curvature radius and thickness are both millimeters (mm).
- 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 total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 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 imaging lens of Embodiment 2, which indicates that light of different wavelengths is deviated from a focus point after passing through the imaging lens.
- 4B shows an astigmatism curve of the imaging lens of Embodiment 2, which shows meridional field curvature and sagittal image plane curvature.
- 4C shows a distortion curve of the imaging lens of Embodiment 2, which shows distortion magnitude values in the case of different viewing angles.
- 4D shows a magnification chromatic aberration curve of the imaging lens of Embodiment 2, which shows deviations of different image heights on the imaging plane after the light rays pass through the imaging lens.
- the imaging lens given in Embodiment 2 can achieve good imaging quality.
- FIG. 5 is a block diagram showing the structure of an imaging lens according to Embodiment 3 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the surface S6 is aspherical;
- the fourth lens E4 has a negative refractive power, and the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has positive refractive power, and both the object side surface S9 and the image side surface S10
- the aspherical surface and the sixth lens E6 have a negative refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- the imaging lens may further include a filter E7 having an object side S13 and an image side S14.
- a stop STO for limiting the light beam may be provided between the first lens E1 and the second lens E2 to improve the image quality. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging plane S15.
- Table 7 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 3, in which the unit of curvature radius and thickness are both millimeters (mm).
- 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 total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 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 imaging lens of Embodiment 3, which shows that light rays of different wavelengths are deviated from a focus point after passing through the imaging lens.
- Fig. 6B shows an astigmatism curve of the imaging lens of Embodiment 3, which shows meridional field curvature and sagittal image plane curvature.
- Fig. 6C shows a distortion curve of the imaging lens of Embodiment 3, which shows distortion magnitude values in the case of different viewing angles.
- Fig. 6D shows a magnification chromatic aberration curve of the imaging lens of Embodiment 3, which shows deviations of different image heights on the imaging plane after the light rays pass through the imaging lens. 6A to 6D, the imaging lens given in Embodiment 3 can achieve good imaging quality.
- FIG. 7 is a block diagram showing the structure of an imaging lens according to Embodiment 4 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the third lens E3 has positive refractive power, and both the object side surface S5 and the image side surface S6 are aspherical surfaces;
- the fourth lens E4 has positive refractive power, and both the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has a negative The refractive power, both the object side surface S9 and the image side surface S10 are aspherical surfaces; and the sixth lens E6 has positive refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- the imaging lens may further include an object side S13 And a filter E7 like the side S14.
- a stop STO for limiting the light beam may be provided between the first lens E1 and the second lens E2 to improve the image quality. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging plane S15.
- Table 10 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 4, in which the unit of curvature radius and thickness are all millimeters (mm).
- 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 total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 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 imaging lens of Embodiment 4, which shows that light rays of different wavelengths are deviated from a focus point after passing through the imaging lens.
- Fig. 8B shows an astigmatism curve of the imaging lens of Embodiment 4, which shows meridional field curvature and sagittal image plane curvature.
- Fig. 8C shows a distortion curve of the imaging lens 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 imaging lens of Embodiment 4, which shows deviations of different image heights on the imaging plane after the light rays pass through the imaging lens. 8A to 8D, the imaging lens given in Embodiment 4 can achieve good imaging quality.
- FIG. 9 is a view showing the configuration of an imaging lens according to Embodiment 5 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the third lens E3 has positive refractive power, and both the object side surface S5 and the image side surface S6 are aspherical surfaces;
- the fourth lens E4 has positive refractive power, and both the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has a negative
- the optical power, the object side surface S9 and the image side surface S10 are both aspherical surfaces;
- the sixth lens E6 has a negative refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- the imaging lens may further include a filter E7 having an object side S13 and an image side S14.
- a stop STO for limiting the light beam may be provided between, for example, the object side and the first lens E1 to improve the image quality.
- the imaging lens may further include a vignetting aperture ST1 disposed between the second lens E2 and the third lens E3. The light from the object sequentially passes through the surfaces S1 to S14 and finally becomes Like on the imaging surface S15.
- Table 13 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 5, in which the unit of the radius of curvature and the thickness are each mm (mm).
- 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 total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 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 imaging lens of Embodiment 5, which shows that light rays of different wavelengths are deviated from a focus point after passing through the imaging lens.
- Fig. 10B shows an astigmatism curve of the imaging lens of Embodiment 5, which shows meridional field curvature and sagittal image plane curvature.
- Fig. 10C shows a distortion curve of the imaging lens 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 imaging lens of Embodiment 5, which shows deviations of different image heights on the imaging plane after the light rays pass through the imaging lens. 10A to 10D, the imaging lens given in Embodiment 5 can achieve good imaging quality.
- FIG. 11 is a view showing the configuration of an imaging lens according to Embodiment 6 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the third lens E3 has positive refractive power, and both the object side surface S5 and the image side surface S6 are aspherical surfaces;
- the fourth lens E4 has positive refractive power, and both the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has a positive light
- the focal length, the object side surface S9 and the image side surface S10 are both aspherical surfaces; and
- the sixth lens E6 has a negative refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- a stop STO for limiting the light beam may be provided between the second lens E2 and the third lens E3 to improve the image quality.
- Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging plane S13.
- Table 16 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 6, wherein the units of the radius of curvature and the thickness are each mm (mm).
- Table 17 shows the high order term coefficients of the respective aspherical mirrors in Example 6.
- Table 18 shows the real The effective focal lengths f1 to f6 of the lenses of the sixth embodiment, the total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- each aspherical surface type can be defined by the formula (1) given in the above embodiment 1.
- Fig. 12A shows an axial chromatic aberration curve of the imaging lens of Embodiment 6, which indicates that light of different wavelengths is deviated from a focus point after the imaging lens.
- Fig. 12B shows an astigmatism curve of the imaging lens of Embodiment 6, which shows meridional field curvature and sagittal image plane curvature.
- Fig. 12C shows a distortion curve of the imaging lens of Embodiment 6, which shows the distortion magnitude value in the case of different viewing angles.
- Fig. 12D shows a magnification chromatic aberration curve of the imaging lens of Embodiment 6, which shows the deviation of the different image heights on the imaging plane after the light rays pass through the imaging lens. 12A to 12D, the imaging lens given in Embodiment 6 can achieve good imaging quality.
- FIG. 13 is a view showing the configuration of an imaging lens according to Embodiment 7 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the third lens E3 has positive refractive power, and both the object side surface S5 and the image side surface S6 are aspherical surfaces;
- the fourth lens E4 has positive refractive power, and both the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has a negative
- the optical power, the object side surface S9 and the image side surface S10 are both aspherical surfaces;
- the sixth lens E6 has a negative refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- the imaging lens may further include a filter E7 having an object side S13 and an image side S14.
- a stop STO for limiting the light beam may be provided between, for example, the object side and the first lens E1 to improve the image quality.
- the imaging lens may further include a vignetting aperture ST1 disposed between the second lens E2 and the third lens E3. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging plane S15.
- Table 19 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 7, wherein the units of the radius of curvature and the thickness are all in millimeters (mm).
- 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 total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 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 imaging lens of Embodiment 7, which indicates that light of different wavelengths is deviated from a focus point after passing through the imaging lens.
- Figure 14B shows Example 7 The astigmatism curve of the imaging lens, which represents meridional image curvature and sagittal curvature of field.
- Fig. 14C shows a distortion curve of the imaging lens 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 imaging lens of Embodiment 7, which shows the deviation of the different image heights on the imaging plane after the light rays pass through the imaging lens. 14A to 14D, the imaging lens given in Embodiment 7 can achieve good imaging quality.
- FIG. 15 is a view showing the configuration of an imaging lens according to Embodiment 7 of the present application.
- the imaging lens includes six lenses E1-E6 sequentially arranged from the object side to the imaging side along the optical axis.
- the first lens E1 has positive refractive power, and both the object side surface S1 and the image side surface S2 are aspherical surfaces;
- the second lens E2 has a negative refractive power, and the object side surface S3 and the image side surface S4 are aspherical surfaces;
- the third lens E3 has positive refractive power, and both the object side surface S5 and the image side surface S6 are aspherical surfaces;
- the fourth lens E4 has positive refractive power, and both the object side surface S7 and the image side surface S8 are aspherical surfaces;
- the fifth lens E5 has a negative
- the optical power, the object side surface S9 and the image side surface S10 are both aspherical surfaces;
- the sixth lens E6 has a negative refractive power, and both the object side surface S11 and the image side surface S12 are aspherical.
- the imaging lens may further include a filter E7 having an object side S13 and an image side S14.
- a stop STO for limiting the light beam may be provided between, for example, the object side and the first lens E1 to improve the image quality.
- the imaging lens may further include a vignetting aperture ST1 disposed between the second lens E2 and the third lens E3. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging plane S15.
- Table 22 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the imaging lens in Example 8, wherein the units of the radius of curvature and the thickness are each mm (mm).
- 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 total effective focal length f of the imaging lens, and the maximum half angle of view HFOV of the imaging lens.
- 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 imaging lens of Embodiment 8, which indicates that light of different wavelengths is deviated from a focus point after passing through the imaging lens.
- Fig. 16B shows an astigmatism curve of the imaging lens of Embodiment 8, which shows meridional field curvature and sagittal image plane curvature.
- 16C is a view showing a distortion curve of the imaging lens of Embodiment 8, which shows a distortion in the case of different viewing angles. Variable size value.
- Fig. 16D shows a magnification chromatic aberration curve of the imaging lens of Embodiment 8, which shows the deviation of the different image heights on the imaging plane after the light rays pass through the imaging lens. 16A to 16D, the imaging lens given in Embodiment 8 can achieve good imaging quality.
- Embodiments 1 to 8 respectively satisfy the relationships shown in Table 25 below.
- the present application also provides an image forming apparatus whose electronic photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
- the imaging device may be a stand-alone imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone.
- the imaging device is equipped with the imaging lens described above.
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Abstract
一种成像镜头,具有总有效焦距f并沿光轴从物侧至像侧依序包括第一透镜(E1)、第二透镜(E2)、第三透镜(E3)、第四透镜(E4)、第五透镜(E5)以及第六透镜(E6)。第一透镜(E1)具有正光焦度,其物侧面(S1)为凸面;第二透镜(E2)具有负光焦度;第三透镜(E3)、第四透镜(E4)、第五透镜(E5)和第六透镜(E6)均具有正光焦度或负光焦度。其中,第一透镜(E1)的物侧面(S1)至成像镜头的成像面(S15)在光轴上的距离TTL与成像镜头的总有效焦距f满足TTL/f≤1.05。
Description
相关申请的交叉引用
本申请要求于2017年6月5日提交于中国国家知识产权局(SIPO)的、专利申请号为201710414137.5的中国专利申请以及于2017年6月5日提交至SIPO的、专利申请号为201720642397.3的中国专利申请的优先权和权益,以上中国专利申请通过引用整体并入本文。
本发明涉及一种成像镜头,更具体地,本发明涉及一种包括六片透镜的成像镜头。
近年来,随着常用感光元件CCD(Charge-Coupled Device,感光耦合元件)或CMOS(Complementary Metal-Oxide Semiconductor,互补性氧化金属半导体元件)等元件性能的提高及尺寸的减小,对于相配套使用的镜头的高成像品质及小型化均提出了更高的要求。
随着便携式电子产品的普及化,人们对摄像功能的便携式电子产品的成像质量的要求也逐渐变高。
为了适应手机、平板电脑等便携式电子产品轻薄化的趋势,也需要配套使用的成像镜头满足小型化要求。为了满足成像镜头小型化,通常需要尽可能地减少成像镜头的镜片数量,但是由此造成的设计自由度的缺乏,会使得成像镜头难以满足市场对高成像性能的需求。
另外,目前主流成像镜头为了获得宽视角的图像,通常采用广角光学系统,但是却不利于拍摄较远物体,无法获得较远处的清晰图像,用户体验不好。
为了解决上述问题而兴起的双摄技术,可以通过长焦镜头获得高的空间角分辨率,再通过图像融合技术,实现高频信息增强。但是,在双摄技术中,长焦镜头的设计尤为关键,如何设计使得镜头同时满足长焦和超薄特性更是亟待解决的问题。
发明内容
本发明提供了可适用于便携式电子产品的、可至少解决或部分解决现有技术中的上述至少一个缺点的成像镜头。
本申请的一个方面提供了这样一种成像镜头,该成像镜头具有总有效焦距f并沿光轴从物侧至像侧依序包括第一透镜、第二透镜、第三透镜、第四透镜、第五透镜以及第六透镜。第一透镜可具有正光焦度,其物侧面为凸面;第二透镜具有负光焦度;第三透镜、第四透镜、第五透镜和第六透镜均具有正光焦度或负光焦度。其中,第一透镜的物侧面至成像镜头的成像面在光轴上的距离TTL与成像镜头的总有效焦距f之间可满足TTL/f≤1.05。
本申请的另一个方面提供了这样一种成像镜头,该成像镜头具有总有效焦距f并沿光轴从物侧至像侧依序包括第一透镜、第二透镜、第三透镜、第四透镜、第五透镜以及第六透镜。第一透镜可具有正光焦度,其物侧面为凸面;第二透镜具有负光焦度;第三透镜、第四透镜、第五透镜和第六透镜均具有正光焦度或负光焦度。其中,成像镜头的总有效焦距f与第五透镜的有效焦距f5之间可满足-2.0<f/f5<1.0。
本申请的另一个方面还提供了这样一种成像镜头,该成像镜头具有总有效焦距f并沿光轴从物侧至像侧依序包括第一透镜、第二透镜、第三透镜、第四透镜、第五透镜以及第六透镜。第一透镜可具有正光焦度,其物侧面为凸面;第二透镜具有负光焦度;第三透镜、第四透镜、第五透镜和第六透镜均具有正光焦度或负光焦度。其中,成像镜头的总有效焦距f与第五透镜像侧面的曲率半径R10之间可满足-2.0<f/R10<0。
在一个实施方式中,第一透镜的物侧面至成像镜头的成像面在光轴上的距离TTL与成像镜头的成像面上有效像素区域对角线长的一半ImgH之间可满足TTL/ImgH≤2.0。
在一个实施方式中,成像镜头的总有效焦距f与成像镜头的入瞳直径EPD之间可满足f/EPD≤2.7。
在一个实施方式中,成像镜头的总有效焦距f与第六透镜于光轴上的中心厚度CT6之间可满足f/CT6≥15。
在一个实施方式中,第六透镜于光轴上的中心厚度CT6与第六透镜在最大半径处的边缘厚度ET6之间可满足CT6/ET6<1.3。
在一个实施方式中,第四透镜于光轴上的中心厚度CT4与成像镜头的总有效焦距f之间可满足0<CT4/f<0.5。
在一个实施方式中,第三透镜和第四透镜在光轴上的空气间隔T34与成像镜头的总有效焦距f之间可满足0<T34/f<0.2。
在一个实施方式中,第四透镜的有效焦距f4与第三透镜的有效焦距f3之间可满足0<f4/f3<0.5。
在一个实施方式中,成像镜头的总有效焦距f与第六透镜的有效焦距f6之间可满足-2.0<f/f6<0.5。
在一个实施方式中,第一透镜的物侧面的曲率半径R1与成像镜头的总有效焦距f满足0<R1/f<0.5。
在一个实施方式中,第一透镜的物侧面的曲率半径R1与第一透镜的像侧面的曲率半径R2之间可满足|R1/R2|<0.5。
本申请可例如采用了多片(例如,六片)透镜,通过合理分配成像镜头中各透镜的光焦度、面型,各透镜的中心厚度以及各透镜在光轴上的空气间隔,使该成像镜头在满足小型化的同时,实现摄远的功效。
结合附图,通过以下非限制性实施方式的详细描述,本发明的其他特征、目的和优点将变得更加明显。在附图中:
图1示出了根据本申请实施例1的成像镜头的结构示意图;
图2A至图2D分别示出了实施例1的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图3示出了根据本申请实施例2的成像镜头的结构示意图;
图4A至图4D分别示出了实施例2的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图5示出了根据本申请实施例3的成像镜头的结构示意图;
图6A至图6D分别示出了实施例3的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图7示出了根据本申请实施例4的成像镜头的结构示意图;
图8A至图8D分别示出了实施例4的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图9示出了根据本申请实施例5的成像镜头的结构示意图;
图10A至图10D分别示出了实施例5的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图11示出了根据本申请实施例6的成像镜头的结构示意图;
图12A至图12D分别示出了实施例6的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图13示出了根据本申请实施例7的成像镜头的结构示意图;
图14A至图14D分别示出了实施例7的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;
图15示出了根据本申请实施例8的成像镜头的结构示意图;
图16A至图16D分别示出了实施例8的成像镜头的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线。
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、第三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或第三透镜。
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。
在本文中,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。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。
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、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、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”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。
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。
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。
以下对本申请的特征、原理和其他方面进行详细描述。
根据本申请示例性实施方式的成像镜头包括例如六个具有光焦度的透镜,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,第一透镜可具有正光焦度,其物侧面可为凸面;第二透镜可具有负光焦度;第三透镜至第六透镜均可具有正光
焦度或负光焦度。通过光焦度的合理分配,有利于实现系统的低阶像差的分布、良好的光学像质,并且有利于实现超薄功能。
在应用中,第一透镜提供了整个光学系统所需要的主要的正光焦度,并且大部分的正的光焦度均集中在第一透镜的物侧面。通过将第一透镜物侧面的曲率半径约束在一合理的范围,既可保证整个光学系统的光焦度,又不至于由于第一透镜物侧面的弯曲太强烈,而产生大量的球差,从而引起后方系统中各镜面的像差贡献率的提升。例如,第一透镜的物侧面的曲率半径R1与成像镜头的总有效焦距f之间可满足0<R1/f<0.5,更具体地,R1和f进一步可满足0.24≤R1/f≤0.32。
另外,还可对第一透镜物侧面和像侧面的曲率半径的相对范围进行合理控制,以有效地控制光学系统各个视场的慧差,从而获得良好的成像质量。第一透镜的物侧面的曲率半径R1与第一透镜的像侧面的曲率半径R2之间可满足|R1/R2|<0.5,更具体地,R1和R2进一步可满足0.02≤|R1/R2|≤0.26。
在示例性实施方式中,通过对第四透镜和第三透镜光焦度的合理分配,可有效地实现视场相关像差的矫正,有利于实现光学系统边缘视场的良好成像质量。例如,第四透镜的有效焦距f4与第三透镜的有效焦距f3之间可满足0<f4/f3<0.5,更具体地,f4和f3进一步可满足0.01≤f4/f3≤0.37。
在示例性实施方式中,通过将第六透镜的光焦度控制在合理范围内,能够有效地控制光学系统的场曲和畸变,从而使得在光学系统的边缘视场处获得良好的像质。例如,成像镜头的总有效焦距f与第六透镜的有效焦距f6之间可满足-2.0<f/f6<0.5,更具体地,f和f6进一步可满足-1.63≤f/f6≤0.12。
成像镜头的总有效焦距f与第五透镜的有效焦距f5之间可满足-2.0<f/f5<1.0,更具体地,f和f5进一步可满足-1.61≤f/f5≤0.75。通过控制第五透镜的有效光焦度,使得第五透镜的象散贡献率在合理的范围,从而有效平衡系统的象散量,使得系统获得良好的成像质量。
成像镜头的总有效焦距f与第五透镜的像侧面的曲率半径R10之间可满足-2.0<f/R10<0,更具体地,f和R10进一步可满足-1.65≤
f/R10≤-0.63。通过合理控制第五透镜像侧面的曲率半径的大小和方向,使得第五透镜具有良好的球差平衡能力,从而获得良好的轴上成像质量。
在应用中,可对各透镜的中心厚度以及各透镜之间的间隔距离进行合理布置。第四透镜于光轴上的中心厚度CT4与成像镜头的总有效焦距f之间可满足0<CT4/f<0.5,更具体地,CT4和f进一步可满足0.04≤CT4/f≤0.14。通过对第四透镜中心厚度和光学系统总有效焦距之比的限制,能够有效地矫正光学系统的场曲和畸变,从而使得光学系统在全视场获得良好的像质质量。
在示例性实施方式中,第六透镜于光轴上的中心厚度CT6与成像镜头的总有效焦距f之间可满足f/CT6≥15,更具体地,CT6和f进一步可满足15.27≤f/CT6≤30.41。另外,第六透镜于光轴上的中心厚度CT6与第六透镜在最大半径处的边缘厚度ET6之间可满足CT6/ET6<1.3,更具体地,CT6和ET6进一步可满足0.34≤CT6/ET6≤1.21。通过对第六透镜中心厚度和边缘厚度之比的约束,能够使得非球面度较大的第六透镜具有较好的成型特性。
第三透镜和第四透镜在光轴上的空气间隔T34与成像镜头的总有效焦距f之间可满足0<T34/f<0.2,更具体地,T34和f进一步可满足0.05≤T34/f≤0.14。通过对第三透镜和第四透镜之间的间距的控制,能够有效地调整由第一透镜、第二透镜和第三透镜组成的第一光学镜片组的组合光焦度以及由第四透镜、第五透镜和第六透镜第二光学镜片组的组合光焦度,使得第一光学镜片组和第二光学镜片组分别获得合理的组合光焦度。
在示例性实施方式中,通过对镜头总长和像高的比例的约束,实现成像镜头的大像面、高像素的要求。例如,第一透镜的物侧面至成像镜头的成像面的轴上距离TTL与成像镜头的成像面上的有效像素区域对角线长的一半ImgH之间可满足TTL/ImgH≤2.0,更具体地,TTL和ImgH进一步可满足1.48≤TTL/ImgH≤2.00。
第一透镜的物侧面至成像镜头的成像面的轴上距离TTL与成像镜头的总有效焦距f之间可满足TTL/f≤1.05,更具体地,TTL和f进一
步可满足0.92≤TTL/f≤1.05。当镜头参数满足条件式TTL/f≤1.05时,能够有效地控制光学系统的总长,使得光学系统能够适用于例如手机等对光学系统尺寸有严格要求的终端设备。
成像镜头的总有效焦距f与成像镜头的入瞳直径EPD之间可满足f/EPD≤2.7,更具体地,f和EPD进一步可满足2.47≤f/EPD≤2.69。满足条件式f/EPD≤2.7,以使镜头获得合理的衍射分辨率,进而获得合理的设计以及加工后真实的分辨本领。
可选地,本申请的成像镜头还可包括用于校正色彩偏差的滤光片。滤光片可设置在例如第六透镜与成像面之间。本领域技术人员应当理解的是,滤光片可根据需要设置于其他位置处。
根据本申请的上述实施方式的成像镜头可采用多片镜片,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,可在保证镜头小型化的同时实现长焦的特性,并提高镜头的分辨率与成像品质,从而使得成像镜头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:从透镜中心到周边曲率是连续变化的。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。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,从而提高镜头的成像品质。
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,可改变构成成像镜头的透镜数量,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,但是该成像镜头不限于包括六个透镜。如果需要,该成像镜头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成像镜头的具体实施例。
实施例1
以下参照图1至图2D描述根据本申请实施例1的成像镜头。图1
示出了根据本申请实施例1的成像镜头的结构示意图。
如图1所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有正光焦度,其物侧面S5和像侧面S6均为非球面;第四透镜E4,具有正光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有负光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。可选地,成像镜头还可包括具有物侧面S13和像侧面S14的滤光片E7。在本实施例的成像镜头中,还可在例如物侧与第一透镜E1之间设置用于限制光束的光阑STO,以提高成像质量。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中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。
表1
由表1可得,第一透镜E1的物侧面S1的曲率半径R1与第一透
镜E1的像侧面S2的曲率半径R2之间满足|R1/R2|=0.26。
本实施例采用了六片透镜作为示例,通过合理分配各透镜的焦距、各透镜的面型、各透镜之间的间隔距离,在保证镜头小型化的同时,提升镜头的分辨率并实现摄远的功效。各非球面面型x由以下公式限定:
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示出了可用于实施例1中各非球面镜面S1-S12的高次项系数A4、A6、A8、A10、A12、A14、A16、A18和A20。
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 4.0477E-01 | -5.7538E-01 | 1.3127E+00 | -2.4792E+00 | 3.2759E+00 | -2.3473E+00 | 3.0341E-01 | 6.8636E-01 | -3.2470E-01 |
S2 | -5.2103E-02 | 3.3678E-01 | -2.1998E+00 | 1.0956E+01 | -3.4257E+01 | 6.7225E+01 | -8.0688E+01 | 5.4113E+01 | -1.5556E+01 |
S3 | -1.1657E-01 | 1.4050E-01 | 2.3603E+00 | -1.5637E+01 | 5.7094E+01 | -1.3133E+02 | 1.8559E+02 | -1.4698E+02 | 4.9861E+01 |
S4 | -6.4442E-02 | 9.9864E-01 | -7.2025E+00 | 5.6292E+01 | -2.7866E+02 | 8.6160E+02 | -1.6188E+03 | 1.6935E+03 | -7.5617E+02 |
S5 | -1.6336E-01 | -5.9277E-02 | 1.4509E+00 | -4.4438E+00 | 6.1286E+00 | 2.8965E+00 | -2.3248E+01 | 3.0447E+01 | -1.3426E+01 |
S6 | -1.3458E-01 | 1.1225E-01 | 1.7645E-01 | -4.3058E-01 | 6.1902E-01 | -2.7562E-01 | -7.3897E-01 | 1.0431E+00 | -3.8872E-01 |
S7 | -4.3402E-02 | -2.1373E-01 | 5.0167E-01 | -6.7581E-01 | 5.8021E-01 | -3.0517E-01 | 9.5304E-02 | -1.6407E-02 | 1.2120E-03 |
S8 | 2.6467E-01 | -1.1184E+00 | 1.9704E+00 | -2.0376E+00 | 1.2858E+00 | -4.9512E-01 | 1.1343E-01 | -1.4217E-02 | 7.5164E-04 |
S9 | 5.3815E-01 | -1.5388E+00 | 2.5163E+00 | -2.6097E+00 | 1.6978E+00 | -6.8297E-01 | 1.6449E-01 | -2.1715E-02 | 1.2076E-03 |
S10 | 8.2404E-02 | 5.2643E-02 | -2.7335E-01 | 3.0120E-01 | -1.8208E-01 | 6.7409E-02 | -1.5081E-02 | 1.8625E-03 | -9.7165E-05 |
S11 | -8.8549E-02 | 3.2276E-01 | -4.8703E-01 | 3.8071E-01 | -1.7921E-01 | 5.2539E-02 | -9.3519E-03 | 9.2371E-04 | -3.8832E-05 |
S12 | -1.3874E-01 | 2.1392E-01 | -2.2905E-01 | 1.3765E-01 | -5.0129E-02 | 1.1494E-02 | -1.6399E-03 | 1.3393E-04 | -4.7922E-06 |
表2
表3给出了实施例1的各透镜的有效焦距f1至f6、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 2.87 | -5.46 | 954.41 | 7.23 | -9.08 | -5.84 | 5.07 | 26.6 |
表3
根据表3可知,第三透镜E3的有效焦距f3与第四透镜E4的有效焦距f4之间满足f4/f3=0.01;成像镜头的总有效焦距f与第五透镜E5的有效焦距之间满足f/f5=-0.56;成像镜头的总有效焦距f与第六透镜E6的有效焦距f6之间满足f/f6=-0.87。结合表1和表3可得,第一透镜E1的物侧面S1的曲率半径R1与成像镜头的总有效焦距f之间满足R1/f=0.24;成像镜头的总有效焦距f与第五透镜E5的像侧面S10的曲率半径R10之间满足f/R10=-1.43;第三透镜E3和第四透镜E4在光轴上的空气间隔T34与成像镜头的总有效焦距f之间满足T34/f=0.13;第四透镜E4于光轴上的中心厚度CT4与成像镜头的总有效焦距f之间满足CT4/f=0.11;成像镜头的总有效焦距f与第六透镜E6于光轴上的中心厚度CT6之间满足f/CT6=15.27;第一透镜E1的物侧面S1至成像镜头的成像面S15的轴上距离TTL与成像镜头的总有效焦距f之间满足TTL/f=0.96。
另外,在实施例1中,第六透镜E6于光轴上的中心厚度CT6与第六透镜E6在最大半径处的边缘厚度ET6之间满足CT6/ET6=1.05;第一透镜E1的物侧面S1至成像镜头的成像面S15的轴上距离TTL与成像面S15上有效像素区域对角线长的一半ImgH之间满足TTL/ImgH=1.88;成像镜头的总有效焦距f与成像镜头的入瞳直径EPD之间满足f/EPD=2.64。
图2A示出了实施例1的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图2B示出了实施例1的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头能够实现良好的成像品质。
实施例2
以下参照图3至图4D描述根据本申请实施例2的成像镜头。在
本实施例及以下实施例中,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的成像镜头的结构示意图。
如图3所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3为球面,像侧面S4为非球面;第三透镜E3,具有正光焦度,其物侧面S5为非球面,像侧面S6为球面;第四透镜E4,具有正光焦度,其物侧面S7为非球面,像侧面S8为球面;第五透镜E5,具有正光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。在本实施例的成像镜头中,还可在例如第二透镜E2与第三透镜E3之间设置用于限制光束的光阑STO,以提高成像质量。来自物体的光依序穿过各表面S1至S12并最终成像在成像面S13上。
表4示出了实施例2中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 5.9324E-02 | 4.4290E-03 | -2.4576E-06 | 3.7748E-03 | -1.5999E-03 | 3.7713E-04 | 1.1457E-05 | -4.1138E-05 | -7.5131E-05 |
S2 | 3.7388E-05 | -6.3381E-04 | -1.7545E-03 | -2.5663E-03 | -1.9686E-03 | -4.5341E-04 | 1.2470E-03 | 1.4535E-12 | 5.2187E-12 |
S3 | - | - | - | - | - | - | - | - | - |
S4 | 7.8329E-02 | 9.1537E-02 | -5.9035E-01 | 2.6145E+00 | -4.9665E+00 | 3.6474E+00 | 3.8215E-12 | 1.0865E-12 | 4.5057E-13 |
S5 | 1.5225E-03 | 8.1482E-03 | 7.5895E-02 | -5.1519E-01 | 1.1889E+00 | -8.7922E-01 | 1.9484E-13 | 8.3709E-13 | 4.2787E-13 |
S6 | - | - | - | - | - | - | - | - | - |
S7 | 6.9836E-03 | -1.9800E-02 | 5.1304E-03 | 8.8926E-04 | 4.0460E-04 | -2.4947E-04 | 3.7806E-07 | -4.2042E-07 | -7.0945E-07 |
S8 | - | - | - | - | - | - | - | - | - |
S9 | -5.1295E-02 | 8.5695E-04 | 4.3635E-04 | -7.3517E-06 | 2.0703E-06 | -7.1883E-06 | 7.3320E-07 | 2.7163E-07 | 7.7732E-08 |
S10 | -8.2605E-03 | -7.3216E-04 | 4.1866E-06 | 1.2931E-04 | 1.0348E-05 | -5.0810E-07 | -5.8704E-09 | -3.2037E-09 | -6.2631E-10 |
S11 | 3.6652E-02 | 3.3641E-03 | -8.0650E-04 | -3.4091E-05 | 5.2483E-07 | 5.3276E-07 | 3.4165E-08 | 3.5466E-09 | 9.7224E-11 |
S12 | -7.9851E-03 | 2.6587E-03 | -8.4644E-04 | 1.2708E-04 | -5.5743E-06 | -4.5512E-07 | 4.3894E-09 | 3.3374E-10 | -4.1432E-11 |
表5
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 3.01 | -4.83 | 25.97 | 9.37 | 9.23 | -2.90 | 4.60 | 34.1 |
表6
图4A示出了实施例2的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图4B示出了实施例2的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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的成像镜头。图5示出了根据本申请实施例3的成像镜头的结构示意图。
如图5所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有负光焦度,其物侧面S5和像侧
面S6均为非球面;第四透镜E4,具有负光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有正光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。可选地,成像镜头还可包括具有物侧面S13和像侧面S14的滤光片E7。在本实施例的成像镜头中,还可在例如第一透镜E1与第二透镜E2之间设置用于限制光束的光阑STO,以提高成像质量。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7示出了实施例3中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | -6.2596E-04 | -1.0764E-02 | 2.3720E-02 | -3.4946E-02 | 3.1012E-02 | -1.6982E-02 | 5.4696E-03 | -9.2649E-04 | 5.9226E-05 |
S2 | -5.7804E-03 | 8.3091E-03 | -2.0865E-02 | 3.5473E-02 | -3.6487E-02 | 2.3053E-02 | -8.7845E-03 | 1.8621E-03 | -1.7128E-04 |
S3 | -4.7463E-03 | -1.4221E-02 | 1.1807E-01 | -3.1757E-01 | 5.4741E-01 | -6.0551E-01 | 4.1383E-01 | -1.5961E-01 | 2.6626E-02 |
S4 | 2.0735E-02 | 3.5338E-02 | -5.3468E-02 | -1.7804E-01 | 1.6608E+00 | -4.7062E+00 | 6.6797E+00 | -4.8100E+00 | 1.3964E+00 |
S5 | -1.2280E-02 | -1.7809E-03 | 3.7222E-01 | -1.6061E+00 | 3.9965E+00 | -6.1480E+00 | 5.7842E+00 | -3.0433E+00 | 6.8118E-01 |
S6 | -6.3233E-02 | 1.2316E-01 | -1.7384E-01 | 3.4595E-01 | -4.9387E-01 | 3.2631E-01 | 1.0231E-01 | -2.4497E-01 | 8.5683E-02 |
S7 | -1.5923E-01 | 5.7838E-02 | 2.8709E-01 | -8.7229E-01 | 1.4651E+00 | -1.6366E+00 | 1.0529E+00 | -2.9424E-01 | 4.4968E-03 |
S8 | -1.1188E-01 | 1.3208E-01 | -7.6361E-02 | 1.1764E-01 | -1.9515E-01 | 1.5243E-01 | -5.3394E-02 | 4.8553E-03 | 9.0347E-04 |
S9 | -3.6352E-02 | -2.1184E-02 | 6.1650E-02 | -4.7187E-02 | 2.0454E-02 | -5.6407E-03 | 9.7835E-04 | -9.7114E-05 | 4.1981E-06 |
S10 | -7.5094E-04 | -6.3111E-02 | 6.1268E-02 | -2.8978E-02 | 9.2727E-03 | -2.1796E-03 | 3.5139E-04 | -3.3361E-05 | 1.3739E-06 |
S11 | -5.1397E-03 | -1.4491E-02 | -7.0252E-03 | 1.2588E-02 | -6.0203E-03 | 1.5212E-03 | -2.2076E-04 | 1.7337E-05 | -5.7033E-07 |
S12 | -1.4868E-02 | 2.8788E-02 | -3.6965E-02 | 2.1226E-02 | -7.0568E-03 | 1.4395E-03 | -1.7626E-04 | 1.1848E-05 | -3.3598E-07 |
表8
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 3.47 | -4.62 | -195.12 | -30.93 | 9.99 | -8.84 | 7.48 | 24.7 |
表9
图6A示出了实施例3的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图6B示出了实施例3的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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的成像镜头。图7示出了根据本申请实施例4的成像镜头的结构示意图。
如图7所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有正光焦度,其物侧面S5和像侧面S6均为非球面;第四透镜E4,具有正光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有负光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有正光焦度,其物侧面S11和像侧面S12均为非球面。可选地,成像镜头还可包括具有物侧面S13
和像侧面S14的滤光片E7。在本实施例的成像镜头中,还可在例如第一透镜E1与第二透镜E2之间设置用于限制光束的光阑STO,以提高成像质量。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10示出了实施例4中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 1.8723E-02 | -6.7044E-03 | 2.2577E-02 | -3.0860E-02 | 2.4964E-02 | -1.1181E-02 | 2.1303E-03 | 1.3022E-04 | -8.5148E-05 |
S2 | -1.1911E-02 | 3.3335E-02 | -5.1946E-02 | 6.3356E-02 | -5.3846E-02 | 2.7649E-02 | -7.2578E-03 | 4.7080E-04 | 1.0043E-04 |
S3 | -6.8982E-02 | 8.4449E-02 | 9.4814E-02 | -5.6120E-01 | 1.1686E+00 | -1.4186E+00 | 1.0341E+00 | -4.1820E-01 | 7.2101E-02 |
S4 | -7.9768E-02 | 3.4926E-01 | -1.5828E+00 | 6.9666E+00 | -1.9970E+01 | 3.6029E+01 | -3.9489E+01 | 2.4027E+01 | -6.2183E+00 |
S5 | -3.8173E-03 | 1.1474E-02 | 2.4663E-01 | -8.7857E-01 | 1.8371E+00 | -2.4885E+00 | 2.0915E+00 | -9.8169E-01 | 1.9622E-01 |
S6 | 1.9259E-02 | 9.3306E-02 | -2.3591E-01 | 6.1611E-01 | -1.0894E+00 | 1.1979E+00 | -8.1082E-01 | 3.1153E-01 | -5.2238E-02 |
S7 | -3.2069E-02 | -2.5916E-02 | 7.7155E-02 | -7.4381E-02 | 4.4262E-02 | -1.6975E-02 | 3.9827E-03 | -5.1426E-04 | 2.7865E-05 |
S8 | -2.0003E-03 | -3.3974E-02 | 3.1853E-02 | -2.6558E-02 | 2.0466E-02 | -9.1403E-03 | 2.1877E-03 | -2.6539E-04 | 1.2877E-05 |
S9 | 1.2896E-01 | -4.9518E-02 | -5.2989E-02 | 5.4964E-02 | -1.9470E-02 | 3.0446E-03 | -1.1502E-04 | -2.1733E-05 | 1.9369E-06 |
S10 | 3.0400E-02 | 2.5980E-02 | -6.3859E-02 | 4.4630E-02 | -1.7684E-02 | 4.3624E-03 | -6.5140E-04 | 5.3230E-05 | -1.8135E-06 |
S11 | -2.3534E-02 | -8.8547E-02 | 9.5668E-02 | -4.9717E-02 | 1.4207E-02 | -2.2511E-03 | 1.8379E-04 | -5.6962E-06 | -3.8755E-08 |
S12 | -1.2849E-02 | -8.4533E-02 | 7.7024E-02 | -3.6315E-02 | 1.0380E-02 | -1.8468E-03 | 1.9938E-04 | -1.1912E-05 | 3.0094E-07 |
表11
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 3.20 | -3.72 | 153.83 | 7.32 | -4.65 | 60.77 | 7.50 | 24.7 |
表12
图8A示出了实施例4的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图8B示出了实施例4的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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的成像镜头。图9示出了根据本申请实施例5的成像镜头的结构示意图。
如图9所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有正光焦度,其物侧面S5和像侧面S6均为非球面;第四透镜E4,具有正光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有负光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。可选地,成像镜头还可包括具有物侧面S13和像侧面S14的滤光片E7。在本实施例的成像镜头中,还可在例如物侧与第一透镜E1之间设置用于限制光束的光阑STO,以提高成像质量。可选地,成像镜头还可包括设置于第二透镜E2与第三透镜E3之间的渐晕光阑ST1。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13示出了实施例5中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 4.1028E-01 | -5.6350E-01 | 1.0135E+00 | -1.0689E+00 | -3.2971E-01 | 3.1762E+00 | -4.7521E+00 | 3.2320E+00 | -8.6584E-01 |
S2 | -3.6153E-02 | 2.7066E-01 | -1.9148E+00 | 9.5200E+00 | -2.9180E+01 | 5.5731E+01 | -6.4840E+01 | 4.2096E+01 | -1.1728E+01 |
S3 | -5.5216E-02 | -1.0718E-01 | 2.3877E+00 | -1.3352E+01 | 4.4719E+01 | -9.5079E+01 | 1.2488E+02 | -9.2736E+01 | 2.9805E+01 |
S4 | -1.7766E-02 | 9.5762E-01 | -9.9590E+00 | 8.8567E+01 | -4.9501E+02 | 1.7468E+03 | -3.7645E+03 | 4.5174E+03 | -2.3089E+03 |
S5 | -1.5866E-01 | -1.2947E-02 | 3.8271E-01 | 5.8192E+00 | -4.6500E+01 | 1.6324E+02 | -3.1112E+02 | 3.1058E+02 | -1.2688E+02 |
S6 | -1.3259E-01 | 3.2935E-01 | -1.5618E+00 | 7.4177E+00 | -2.1511E+01 | 3.9349E+01 | -4.4515E+01 | 2.8089E+01 | -7.4910E+00 |
S7 | -3.4061E-02 | -1.5579E-01 | 3.9904E-01 | -6.4110E-01 | 6.2964E-01 | -3.5840E-01 | 1.1548E-01 | -1.9347E-02 | 1.2650E-03 |
S8 | 3.1771E-01 | -9.0559E-01 | 1.1588E+00 | -8.5248E-01 | 3.6609E-01 | -8.7587E-02 | 9.9714E-03 | -1.9369E-04 | -3.6477E-05 |
S9 | 3.5262E-01 | -7.3595E-01 | 6.7514E-01 | -2.5630E-01 | -3.5120E-02 | 7.1664E-02 | -2.7753E-02 | 4.7855E-03 | -3.1943E-04 |
S10 | -1.0575E-01 | 5.1565E-01 | -8.0880E-01 | 6.5761E-01 | -3.1953E-01 | 9.6073E-02 | -1.7503E-02 | 1.7683E-03 | -7.5933E-05 |
S11 | 2.4819E-03 | 2.6220E-02 | -5.7806E-02 | 4.2506E-02 | -1.8610E-02 | 5.3255E-03 | -9.5436E-04 | 9.5727E-05 | -4.0720E-06 |
S12 | 3.0495E-02 | -1.9229E-01 | 1.9233E-01 | -1.0055E-01 | 3.1615E-02 | -6.1539E-03 | 7.2058E-04 | -4.6044E-05 | 1.2169E-06 |
表14
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 2.81 | -5.19 | 112.44 | 6.92 | -9.68 | -4.94 | 5.07 | 32.7 |
表15
图10A示出了实施例5的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图10B示出了实施例5的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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的成像镜头。图11示出了根据本申请实施例6的成像镜头的结构示意图。
如图11所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有正光焦度,其物侧面S5和像侧面S6均为非球面;第四透镜E4,具有正光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有正光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。在本实施例的成像镜头中,还可在例如第二透镜E2与第三透镜E3之间设置用于限制光束的光阑STO,以提高成像质量。来自物体的光依序穿过各表面S1至S12并最终成像在成像面S13上。
表16示出了实施例6中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 6.2435E-02 | -1.3503E-02 | 1.1755E-01 | -3.3913E-01 | 5.9746E-01 | -6.4872E-01 | 4.2735E-01 | -1.5622E-01 | 2.3871E-02 |
S2 | -2.9075E-02 | 1.9762E-01 | -5.9843E-01 | 9.5303E-01 | -1.7343E-01 | -2.1910E+00 | 3.8380E+00 | -2.7397E+00 | 7.4271E-01 |
S3 | -5.0423E-02 | 1.4566E-01 | 3.6093E-01 | -4.4543E+00 | 1.8275E+01 | -4.1046E+01 | 5.2939E+01 | -3.6764E+01 | 1.0682E+01 |
S4 | 2.2020E-02 | 3.3557E-01 | -1.3331E+00 | 1.3577E-02 | 3.9988E+01 | -2.2191E+02 | 5.7124E+02 | -7.3631E+02 | 3.8444E+02 |
S5 | -5.7897E-02 | -5.2816E-01 | 4.8527E+00 | -2.7341E+01 | 9.8595E+01 | -2.2524E+02 | 3.1768E+02 | -2.5231E+02 | 8.6328E+01 |
S6 | -6.9838E-02 | 1.0599E-01 | -7.5714E-01 | 3.3675E+00 | -8.5307E+00 | 1.3431E+01 | -1.2462E+01 | 6.1311E+00 | -1.1677E+00 |
S7 | 2.5238E-02 | -1.9625E-01 | 3.5042E-01 | -3.8447E-01 | 2.6881E-01 | -1.0510E-01 | 1.6568E-02 | 1.3776E-03 | -5.5803E-04 |
S8 | 7.6038E-02 | -2.6522E-01 | 2.8852E-01 | -1.2231E-01 | -2.8471E-02 | 6.2402E-02 | -3.2160E-02 | 7.6018E-03 | -7.0321E-04 |
S9 | 4.4389E-02 | -1.6889E-01 | 4.7788E-02 | 5.0021E-02 | -3.6573E-02 | 3.1896E-03 | 3.7604E-03 | -1.1927E-03 | 1.0404E-04 |
S10 | 3.7775E-02 | -1.2752E-02 | -7.7224E-02 | 9.4344E-02 | -5.1610E-02 | 1.5599E-02 | -2.6443E-03 | 2.3287E-04 | -8.1648E-06 |
S11 | 3.6652E-02 | 3.3641E-03 | -8.0650E-04 | -3.4091E-05 | 5.2483E-07 | 5.3276E-07 | 3.4165E-08 | 3.5466E-09 | 9.7224E-11 |
S12 | -7.9851E-03 | 2.6587E-03 | -8.4644E-04 | 1.2708E-04 | -5.5743E-06 | -4.5512E-07 | 4.3894E-09 | 3.3374E-10 | -4.1432E-11 |
表17
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 3.00 | -5.31 | 27.77 | 10.21 | 8.63 | -2.82 | 4.60 | 34.4 |
表18
图12A示出了实施例6的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图12B示出了实施例6的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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的成像镜头。图13示出了根据本申请实施例7的成像镜头的结构示意图。
如图13所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有正光焦度,其物侧面S5和像侧面S6均为非球面;第四透镜E4,具有正光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有负光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。可选地,成像镜头还可包括具有物侧面S13和像侧面S14的滤光片E7。在本实施例的成像镜头中,还可在例如物侧与第一透镜E1之间设置用于限制光束的光阑STO,以提高成像质量。可选地,成像镜头还可包括设置于第二透镜E2与第三透镜E3之间的渐晕光阑ST1。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19示出了实施例7中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 4.1729E-01 | -6.0072E-01 | 1.2598E+00 | -1.9951E+00 | 1.8297E+00 | -7.6431E-03 | -1.8445E+00 | 1.7291E+00 | -5.2854E-01 |
S2 | -5.9902E-02 | 2.7269E-01 | -1.2241E+00 | 4.6967E+00 | -1.1055E+01 | 1.5439E+01 | -1.2025E+01 | 4.3081E+00 | -3.3573E-01 |
S3 | -1.2327E-01 | 3.6564E-01 | 1.4514E-01 | -1.3256E+00 | -1.5091E+00 | 1.8089E+01 | -4.4707E+01 | 4.9102E+01 | -2.0910E+01 |
S4 | -6.3501E-02 | 1.0513E+00 | -7.1243E+00 | 5.5550E+01 | -2.8161E+02 | 9.0313E+02 | -1.7730E+03 | 1.9480E+03 | -9.1798E+02 |
S5 | -1.8212E-01 | 1.1209E-01 | 1.0767E+00 | -6.0259E+00 | 2.2437E+01 | -5.2286E+01 | 7.2002E+01 | -5.3637E+01 | 1.6693E+01 |
S6 | -1.6491E-01 | 3.2630E-01 | -1.1371E+00 | 5.3115E+00 | -1.5665E+01 | 2.9740E+01 | -3.5340E+01 | 2.3594E+01 | -6.6960E+00 |
S7 | -2.8536E-02 | -2.9795E-01 | 7.7049E-01 | -1.2222E+00 | 1.2517E+00 | -7.9618E-01 | 3.0536E-01 | -6.5222E-02 | 5.9811E-03 |
S8 | 2.6581E-01 | -1.0126E+00 | 1.6092E+00 | -1.4657E+00 | 7.8021E-01 | -2.3387E-01 | 3.5044E-02 | -1.5781E-03 | -9.4154E-05 |
S9 | 5.0875E-01 | -1.4418E+00 | 2.1597E+00 | -1.9236E+00 | 1.0235E+00 | -3.1535E-01 | 5.0679E-02 | -2.8755E-03 | -9.2520E-05 |
S10 | 6.9947E-02 | -3.3203E-03 | -1.4995E-01 | 1.8680E-01 | -1.1864E-01 | 4.4650E-02 | -9.9410E-03 | 1.2043E-03 | -6.1007E-05 |
S11 | -1.2007E-01 | 5.2665E-01 | -8.9675E-01 | 7.8275E-01 | -4.0383E-01 | 1.2778E-01 | -2.4347E-02 | 2.5658E-03 | -1.1500E-04 |
S12 | -1.2881E-01 | 2.6322E-01 | -3.4318E-01 | 2.4060E-01 | -9.9945E-02 | 2.5624E-02 | -4.0092E-03 | 3.5262E-04 | -1.3391E-05 |
表20
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 2.78 | -5.09 | 158.08 | 6.44 | -7.22 | -6.24 | 5.06 | 32.7 |
表21
图14A示出了实施例7的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图14B示出了实施例7
的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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的成像镜头。图15示出了根据本申请实施例7的成像镜头的结构示意图。
如图15所示,成像镜头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,具有正光焦度,其物侧面S1和像侧面S2均为非球面;第二透镜E2,具有负光焦度,其物侧面S3和像侧面S4均为非球面;第三透镜E3,具有正光焦度,其物侧面S5和像侧面S6均为非球面;第四透镜E4,具有正光焦度,其物侧面S7和像侧面S8均为非球面;第五透镜E5,具有负光焦度,其物侧面S9和像侧面S10均为非球面;以及第六透镜E6,具有负光焦度,其物侧面S11和像侧面S12均为非球面。可选地,成像镜头还可包括具有物侧面S13和像侧面S14的滤光片E7。在本实施例的成像镜头中,还可在例如物侧与第一透镜E1之间设置用于限制光束的光阑STO,以提高成像质量。可选地,成像镜头还可包括设置于第二透镜E2与第三透镜E3之间的渐晕光阑ST1。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22示出了实施例8中成像镜头的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数,其中,曲率半径和厚度的单位均为毫米(mm)。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、成像镜头的总有效焦距f以及成像镜头的最大半视场角HFOV。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
面号 | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
S1 | 4.1717E-01 | -6.0067E-01 | 1.2599E+00 | -1.9951E+00 | 1.8296E+00 | -7.7028E-03 | -1.8443E+00 | 1.7291E+00 | -5.2854E-01 |
S2 | -5.9655E-02 | 2.7232E-01 | -1.2239E+00 | 4.6969E+00 | -1.1055E+01 | 1.5439E+01 | -1.2025E+01 | 4.3081E+00 | -3.3573E-01 |
S3 | -1.2353E-01 | 3.6574E-01 | 1.4590E-01 | -1.3252E+00 | -1.5091E+00 | 1.8089E+01 | -4.4707E+01 | 4.9102E+01 | -2.0910E+01 |
S4 | -6.3821E-02 | 1.0515E+00 | -7.1235E+00 | 5.5551E+01 | -2.8161E+02 | 9.0313E+02 | -1.7730E+03 | 1.9480E+03 | -9.1798E+02 |
S5 | -1.8209E-01 | 1.1182E-01 | 1.0745E+00 | -6.0220E+00 | 2.2437E+01 | -5.2286E+01 | 7.2002E+01 | -5.3637E+01 | 1.6693E+01 |
S6 | -1.6379E-01 | 3.1747E-01 | -1.0578E+00 | 4.8708E+00 | -1.4195E+01 | 2.6716E+01 | -3.1583E+01 | 2.1015E+01 | -5.9458E+00 |
S7 | -2.7408E-02 | -2.9761E-01 | 7.6890E-01 | -1.2213E+00 | 1.2513E+00 | -7.9572E-01 | 3.0494E-01 | -6.5033E-02 | 5.9492E-03 |
S8 | 2.6276E-01 | -9.8409E-01 | 1.5378E+00 | -1.3784E+00 | 7.1957E-01 | -2.0894E-01 | 2.9089E-02 | -8.1963E-04 | -1.3367E-04 |
S9 | 4.9769E-01 | -1.3721E+00 | 1.9959E+00 | -1.7227E+00 | 8.7954E-01 | -2.5303E-01 | 3.4679E-02 | -6.4198E-04 | -2.2244E-04 |
S10 | 6.3602E-02 | 1.8188E-02 | -1.8516E-01 | 2.1909E-01 | -1.3645E-01 | 5.0673E-02 | -1.1161E-02 | 1.3400E-03 | -6.7380E-05 |
S11 | -1.1784E-01 | 5.1569E-01 | -8.7572E-01 | 7.6184E-01 | -3.9164E-01 | 1.2349E-01 | -2.3455E-02 | 2.4649E-03 | -1.1022E-04 |
S12 | -1.2752E-01 | 2.6005E-01 | -3.4008E-01 | 2.3942E-01 | -9.9926E-02 | 2.5752E-02 | -4.0507E-03 | 3.5801E-04 | -1.3649E-05 |
表23
参数 | f1(mm) | f2(mm) | f3(mm) | f4(mm) | f5(mm) | f6(mm) | f(mm) | HFOV(°) |
数值 | 2.79 | -5.10 | 165.07 | 6.43 | -7.32 | -6.14 | 5.06 | 32.7 |
表24
图16A示出了实施例8的成像镜头的轴上色差曲线,其表示不同波长的光线经由成像镜头后的会聚焦点偏离。图16B示出了实施例8的成像镜头的象散曲线,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的成像镜头的畸变曲线,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的成像镜头的倍率色差曲线,其表示光线经由成像镜头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所给出的成像镜头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。
条件式\实施例 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
TTL/ImgH | 1.88 | 1.55 | 1.99 | 2.00 | 1.49 | 1.48 | 1.53 | 1.53 |
f/CT6 | 15.27 | 30.41 | 21.37 | 17.86 | 15.35 | 21.90 | 15.34 | 15.34 |
f4/f3 | 0.01 | 0.36 | 0.16 | 0.05 | 0.06 | 0.37 | 0.04 | 0.04 |
CT6/ET6 | 1.05 | 0.34 | 1.06 | 1.21 | 0.82 | 0.49 | 0.42 | 0.42 |
TTL/f | 0.96 | 1.05 | 0.92 | 0.93 | 0.95 | 1.05 | 0.95 | 0.95 |
CT4/f | 0.11 | 0.10 | 0.04 | 0.09 | 0.14 | 0.09 | 0.12 | 0.12 |
T34/f | 0.13 | 0.13 | 0.05 | 0.14 | 0.14 | 0.14 | 0.13 | 0.14 |
R1/f | 0.24 | 0.32 | 0.25 | 0.24 | 0.25 | 0.32 | 0.24 | 0.24 |
|R1/R2| | 0.26 | 0.13 | 0.02 | 0.06 | 0.22 | 0.12 | 0.23 | 0.23 |
f/f6 | -0.87 | -1.59 | -0.85 | 0.12 | -1.03 | -1.63 | -0.81 | -0.82 |
f/EPD | 2.64 | 2.62 | 2.69 | 2.63 | 2.69 | 2.47 | 2.69 | 2.69 |
f/f5 | -0.56 | 0.50 | 0.75 | -1.61 | -0.52 | 0.53 | -0.70 | -0.69 |
f/R10 | -1.43 | -0.99 | -1.20 | -0.63 | -1.65 | -0.96 | -1.33 | -1.33 |
表25
本申请还提供一种成像装置,其电子感光元件可以是感光耦合元件(CCD)或互补性氧化金属半导体元件(CMOS)。成像装置可以是诸如数码相机的独立成像设备,也可以是集成在诸如手机等移动电子设备上的成像模块。该成像装置装配有以上描述的成像镜头。
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)
- 成像镜头,具有总有效焦距f,所述成像镜头沿光轴从物侧至像侧依序包括第一透镜、第二透镜、第三透镜、第四透镜、第五透镜以及第六透镜,其特征在于,所述第一透镜具有正光焦度,其物侧面为凸面;所述第二透镜具有负光焦度;所述第三透镜、所述第四透镜、所述第五透镜和所述第六透镜均具有正光焦度或负光焦度;所述第一透镜的物侧面至所述成像镜头的成像面在所述光轴上的距离TTL与所述总有效焦距f满足TTL/f≤1.05。
- 根据权利要求1所述的成像镜头,其特征在于,所述第一透镜的物侧面至所述成像镜头的成像面在所述光轴上的距离TTL与所述成像镜头的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH≤2.0。
- 根据权利要求1所述的成像镜头,具有入瞳直径EPD,其特征在于,所述总有效焦距f与所述入瞳直径EPD满足f/EPD≤2.7。
- 根据权利要求2或3所述的成像镜头,其特征在于,所述总有效焦距f与所述第六透镜于所述光轴上的中心厚度CT6满足f/CT6≥15。
- 根据权利要求4所述的成像镜头,其特征在于,所述第六透镜于所述光轴上的中心厚度CT6与所述第六透镜在最大半径处的边缘厚度ET6满足CT6/ET6<1.3。
- 根据权利要求4所述的成像镜头,其特征在于,所述第四透镜 于所述光轴上的中心厚度CT4与所述总有效焦距f满足0<CT4/f<0.5。
- 根据权利要求4所述的成像镜头,其特征在于,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与所述总有效焦距f满足0<T34/f<0.2。
- 根据权利要求4所述的成像镜头,其特征在于,所述第四透镜的有效焦距f4与所述第三透镜的有效焦距f3满足0<f4/f3<0.5。
- 根据权利要求4所述的成像镜头,其特征在于,所述总有效焦距f与所述第六透镜的有效焦距f6满足-2.0<f/f6<0.5。
- 根据权利要求4所述的成像镜头,其特征在于,所述第一透镜的物侧面的曲率半径R1与所述总有效焦距f满足0<R1/f<0.5。
- 根据权利要求4所述的成像镜头,其特征在于,所述第一透镜的物侧面的曲率半径R1与所述第一透镜的像侧面的曲率半径R2满足|R1/R2|<0.5。
- 根据权利要求1所述的成像镜头,其特征在于,所述总有效焦距f与所述第五透镜的有效焦距f5满足-2.0<f/f5<1.0。
- 根据权利要求1所述的成像镜头,其特征在于,所述总有效焦距f与所述第五透镜的像侧面的曲率半径R10满足-2.0<f/R10<0。
- 成像镜头,具有总有效焦距f,所述成像镜头沿光轴从物侧至像侧依序包括第一透镜、第二透镜、第三透镜、第四透镜、第五透镜以及第六透镜,其特征在于,所述第一透镜具有正光焦度,其物侧面为凸面;所述第二透镜具有负光焦度;所述第三透镜、所述第四透镜、所述第五透镜和所述第六透镜均具有正光焦度或负光焦度;所述总有效焦距f与所述第五透镜的有效焦距f5满足-2.0<f/f5<1.0。
- 根据权利要求14所述的成像镜头,其特征在于,所述第一透镜的物侧面的曲率半径R1与所述总有效焦距f满足0<R1/f<0.5。
- 根据权利要求14所述的成像镜头,其特征在于,所述第一透镜的物侧面的曲率半径R1与所述第一透镜的像侧面的曲率半径R2满足|R1/R2|<0.5。
- 根据权利要求14所述的成像镜头,其特征在于,所述第四透镜的有效焦距f4与所述第三透镜的有效焦距f3满足0<f4/f3<0.5。
- 根据权利要求14所述的成像镜头,其特征在于,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与所述总有效焦距f满足0<T34/f<0.2。
- 根据权利要求14所述的成像镜头,其特征在于,所述第四透镜于所述光轴上的中心厚度CT4与所述总有效焦距f满足0<CT4/f<0.5。
- 根据权利要求14所述的成像镜头,其特征在于,所述总有效焦距f与所述第五透镜的像侧面的曲率半径R10满足-2.0<f/R10<0。
- 根据权利要求14所述的成像镜头,其特征在于,所述总有效焦距f与所述第六透镜于所述光轴上的中心厚度CT6满足f/CT6≥15。
- 根据权利要求14所述的成像镜头,其特征在于,所述第六透镜于所述光轴上的中心厚度CT6与所述第六透镜在最大半径处的边缘厚度ET6满足CT6/ET6<1.3。
- 根据权利要求14所述的成像镜头,其特征在于,所述总有效焦距f与所述第六透镜的有效焦距f6满足-2.0<f/f6<0.5。
- 根据权利要求14所述的成像镜头,具有入瞳直径EPD,其特征在于,所述总有效焦距f与所述入瞳直径EPD满足f/EPD≤2.7。
- 根据权利要求14所述的成像镜头,其特征在于,所述第一透镜的物侧面至所述成像镜头的成像面在所述光轴上的距离TTL与所述成像镜头的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH≤2.0。
- 根据权利要求24或25所述的成像镜头,其特征在于,所述第一透镜的物侧面至所述成像镜头的成像面在所述光轴上的距离TTL与所述总有效焦距f满足TTL/f≤1.05。
- 成像镜头,具有总有效焦距f,所述成像镜头沿光轴从物侧至像侧依序包括第一透镜、第二透镜、第三透镜、第四透镜、第五透镜以及第六透镜,其特征在于,所述第一透镜具有正光焦度,其物侧面为凸面;所述第二透镜具有负光焦度;所述第三透镜、所述第四透镜、所述第五透镜和所述第六透镜均具有正光焦度或负光焦度;所述总有效焦距f与所述第五透镜的像侧面的曲率半径R10满足-2.0<f/R10<0。
- 根据权利要求27所述的成像镜头,其特征在于,所述第一透镜的物侧面至所述成像镜头的成像面在所述光轴上的距离TTL与所述成像镜头的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH≤2.0。
- 根据权利要求28所述的成像镜头,具有入瞳直径EPD,其特征在于,所述总有效焦距f与所述入瞳直径EPD满足f/EPD≤2.7。
- 根据权利要求29所述的成像镜头,其特征在于,所述总有效焦距f与所述第五透镜的有效焦距f5满足-2.0<f/f5<1.0。
- 根据权利要求30所述的成像镜头,其特征在于,所述总有效焦距f与所述第六透镜于所述光轴上的中心厚度CT6满足f/CT6≥15。
- 根据权利要求31所述的成像镜头,其特征在于,所述总有效焦距f与所述第六透镜的有效焦距f6满足-2.0<f/f6<0.5。
- 根据权利要求32所述的成像镜头,其特征在于,所述第六透镜于所述光轴上的中心厚度CT6与所述第六透镜在最大半径处的边缘厚度ET6满足CT6/ET6<1.3。
- 根据权利要求33所述的成像镜头,其特征在于,所述第四透镜于所述光轴上的中心厚度CT4与所述总有效焦距f满足0<CT4/f<0.5。
- 根据权利要求34所述的成像镜头,其特征在于,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与所述总有效焦距f满足0<T34/f<0.2。
- 根据权利要求35所述的成像镜头,其特征在于,所述第四透镜的有效焦距f4与所述第三透镜的有效焦距f3满足0<f4/f3<0.5。
- 根据权利要求36所述的成像镜头,其特征在于,所述第一透镜的物侧面的曲率半径R1与所述总有效焦距f满足0<R1/f<0.5。
- 根据权利要求37所述的成像镜头,其特征在于,所述第一透镜的物侧面的曲率半径R1与所述第一透镜的像侧面的曲率半径R2满足|R1/R2|<0.5。
- 根据权利要求30至38中任一项所述的成像镜头,其特征在于,所述第一透镜的物侧面至所述成像镜头的成像面在所述光轴上的距离TTL与所述总有效焦距f满足TTL/f≤1.05。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101285929A (zh) * | 2007-04-11 | 2008-10-15 | 索尼株式会社 | 变焦镜头和成像设备 |
US20090040621A1 (en) * | 2007-08-10 | 2009-02-12 | Asia Optical Co., Inc. | Zoom lens |
CN101377566A (zh) * | 2007-08-29 | 2009-03-04 | 亚洲光学股份有限公司 | 变焦镜头 |
CN105572848A (zh) * | 2016-03-02 | 2016-05-11 | 浙江舜宇光学有限公司 | 摄远镜头 |
CN105911671A (zh) * | 2013-07-01 | 2016-08-31 | 大立光电股份有限公司 | 光学影像拾取系统镜头组及取像装置 |
CN106990511A (zh) * | 2017-06-05 | 2017-07-28 | 浙江舜宇光学有限公司 | 成像镜头 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101285929A (zh) * | 2007-04-11 | 2008-10-15 | 索尼株式会社 | 变焦镜头和成像设备 |
US20090040621A1 (en) * | 2007-08-10 | 2009-02-12 | Asia Optical Co., Inc. | Zoom lens |
CN101377566A (zh) * | 2007-08-29 | 2009-03-04 | 亚洲光学股份有限公司 | 变焦镜头 |
CN105911671A (zh) * | 2013-07-01 | 2016-08-31 | 大立光电股份有限公司 | 光学影像拾取系统镜头组及取像装置 |
CN105572848A (zh) * | 2016-03-02 | 2016-05-11 | 浙江舜宇光学有限公司 | 摄远镜头 |
CN106990511A (zh) * | 2017-06-05 | 2017-07-28 | 浙江舜宇光学有限公司 | 成像镜头 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11668907B2 (en) | 2019-11-29 | 2023-06-06 | Largan Precision Co., Ltd. | Photographing optical lens assembly and electronic device |
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