US20210191085A1 - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
US20210191085A1
US20210191085A1 US16/821,797 US202016821797A US2021191085A1 US 20210191085 A1 US20210191085 A1 US 20210191085A1 US 202016821797 A US202016821797 A US 202016821797A US 2021191085 A1 US2021191085 A1 US 2021191085A1
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Prior art keywords
lens element
optical axis
lens
represented
optical imaging
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Abandoned
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US16/821,797
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English (en)
Inventor
Maozong Lin
Jiayuan Zhang
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Genius Electronic Optical Xiamen Co Ltd
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Genius Electronic Optical Xiamen Co Ltd
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Assigned to GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD. reassignment GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, MAOZONG, Zhang, Jiayuan
Publication of US20210191085A1 publication Critical patent/US20210191085A1/en
Priority to US18/366,197 priority Critical patent/US20230375810A1/en
Abandoned legal-status Critical Current

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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
    • 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 -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the present disclosure relates to an optical imaging lens, and particularly, to an optical imaging lens for capturing image and video.
  • optical imaging lenses have continuously evolved, and their scope of application has become more extensive.
  • the number of optical lens elements must be increased to correct problems such as aberration and dispersion.
  • the larger distance from the object-side surface of the first lens element to the image plane along the optical axis will be detrimental to the thinning of mobile phones, digital cameras, and automotive lenses.
  • the present disclosure provides an optical imaging lens for capturing image and video such as the optical imaging lens of cell phones, cameras, tablets and personal digital assistants.
  • an optical imaging lens for capturing image and video
  • the system length of the optical imaging lens can be reduced, and the aperture and the field of view of the optical imaging lens can be enlarged while improving imaging quality or assembly yield.
  • T1 A thickness of the first lens element along the optical axis G12 A distance from the image-side surface of the first lens element to the object-side surface of the second lens element along the optical axis, i.e., an air gap between the first lens element and the second lens element along the optical axis T2 A thickness of the second lens element along the optical axis G23 A distance from the image-side surface of the second lens element to the object- side surface of the third lens element along the optical axis, i.e., an air gap between the second lens element and the third lens element along the optical axis T3 A thickness of the third lens element along the optical axis G34 A distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element along the optical axis, i.e., an air gap between the third lens element and the fourth lens element along the optical axis T4 A thickness of the fourth lens element along the optical axis G45 A distance from the image-side surface of the fourth lens element to the object
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • An optical axis region of the image-side surface of the sixth lens element may be concave.
  • An optical axis region of the image-side surface of the seventh lens element may be convex.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element. Accordingly, the optical imaging lens can correct the spherical aberration and the filed curvature aberration, and reduce the distortion aberration.
  • the optical imaging lens satisfies inequality (1): ImgH/L35 ⁇ 3.300, the system length of the optical imaging lens may be shortened while maintaining large image height.
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • An optical axis region of the image-side surface of the sixth lens element may be concave.
  • An optical axis region of the object-side surface of the eighth lens element may be concave.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element. Accordingly, the optical imaging lens can correct the spherical aberration and the filed curvature aberration, and reduce the distortion aberration.
  • the optical imaging lens satisfies inequality (1): ImgH/L35 ⁇ 3.300, the system length of the optical imaging lens may be shortened while maintaining large image height.
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • a periphery region of the object-side surface of the second lens element may be convex.
  • a periphery region of the image-side surface of the third lens element may be convex.
  • the seventh lens element may have positive refracting power.
  • a periphery region of the object-side surface of the seventh lens element may be concave.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element. Accordingly, the optical imaging lens can correct the spherical aberration and the filed curvature aberration, and reduce the distortion aberration.
  • the optical imaging lens can control the angle of deflection of the light, so that the lens shape does not need to be designed to be too curved, which helps to improve the manufacturing yield. In addition, conforming to this range also helps to improve the chromatic aberration.
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • a periphery region of the image-side surface of the second lens element may be concave.
  • a periphery region of the image-side surface of the third lens element may be convex.
  • the seventh lens element may have positive refracting power.
  • a periphery region of the object-side surface of the seventh lens element may be concave.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element. Accordingly, the optical imaging lens can correct the spherical aberration and the filed curvature aberration, and reduce the distortion aberration.
  • the optical imaging lens satisfies inequality (2): V3+V4+V5+V6 ⁇ 150.000
  • the optical imaging lens can control the angle of deflection of the light, so that the lens shape does not need to be designed to be too curved, which helps to improve the manufacturing yield. In addition, conforming to this range also helps to improve the chromatic aberration.
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • a periphery region of the image-side surface of the third lens element may be convex.
  • An optical axis region of the image-side surface of the sixth lens element may be concave.
  • the seventh lens element may have positive refracting power.
  • a periphery region of the object-side surface of the seventh lens element may be concave.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element. Accordingly, the optical imaging lens can correct the spherical aberration and the filed curvature aberration, and reduce the distortion aberration.
  • the optical imaging lens can control the angle of deflection of the light, so that the lens shape does not need to be designed to be too curved, which helps to improve the manufacturing yield. In addition, conforming to this range also helps to improve the chromatic aberration.
  • exemplary limited inequalities listed above can also be combined in any number of different amounts and applied to the embodiments of the present invention, and are not limited to this.
  • more details about the convex or concave surface structure, refracting power or chosen material etc. could be incorporated for one specific lens element or broadly for a plurality of lens elements to improve the control for the system performance and/or resolution. It is noted that the details listed herein could be incorporated into the example embodiments if no inconsistency occurs.
  • the optical imaging lens in the example embodiments may maintain good imaging quality, and the system length of the optical imaging lens may be reduced, and the aperture may be enlarged.
  • FIG. 1 depicts a cross-sectional view of one single lens element according to one embodiment of the present disclosure
  • FIG. 2 depicts a schematic view of a relation between a surface shape and an optical focus of a lens element
  • FIG. 3 depicts a schematic view of a first example of a surface shape and an effective radius of a lens element
  • FIG. 4 depicts a schematic view of a second example of a surface shape and an effective radius of a lens element
  • FIG. 5 depicts a schematic view of a third example of a surface shape and an effective radius of a lens element
  • FIG. 6 depicts a cross-sectional view of the optical imaging lens according to the first embodiment of the present disclosure
  • FIG. 7 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the first embodiment of the present disclosure
  • FIG. 8 depicts a table of optical data for each lens element of an optical imaging lens according to the first embodiment of the present disclosure
  • FIG. 9 depicts a table of aspherical data of the optical imaging lens according to the first embodiment of the present disclosure.
  • FIG. 10 depicts a cross-sectional view of the optical imaging lens according to the second embodiment of the present disclosure.
  • FIG. 11 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the second embodiment of the present disclosure
  • FIG. 12 depicts a table of optical data for each lens element of the optical imaging lens according to the second embodiment of the present disclosure
  • FIG. 13 depicts a table of aspherical data of the optical imaging lens according to the second embodiment of the present disclosure
  • FIG. 14 depicts a cross-sectional view of the optical imaging lens according to the third embodiment of the present disclosure.
  • FIG. 15 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations the optical imaging lens according to the third embodiment of the present disclosure
  • FIG. 16 depicts a table of optical data for each lens element of the optical imaging lens according to the third embodiment of the present disclosure
  • FIG. 17 depicts a table of aspherical data of the optical imaging lens according to the third embodiment of the present disclosure.
  • FIG. 18 depicts a cross-sectional view of the optical imaging lens according to the fourth embodiment of the present disclosure.
  • FIG. 19 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the fourth embodiment of the present disclosure.
  • FIG. 20 depicts a table of optical data for each lens element of the optical imaging lens according to the fourth embodiment of the present disclosure
  • FIG. 21 depicts a table of aspherical data of the optical imaging lens according to the fourth embodiment of the present disclosure.
  • FIG. 22 depicts a cross-sectional view of the optical imaging lens according to the fifth embodiment of the present disclosure.
  • FIG. 23 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the fifth embodiment of the present disclosure
  • FIG. 24 depicts a table of optical data for each lens element of the optical imaging lens according to the fifth embodiment of the present disclosure
  • FIG. 25 depicts a table of aspherical data of the optical imaging lens according to the fifth embodiment of the present disclosure.
  • FIG. 26 depicts a cross-sectional view of the optical imaging lens according to the sixth embodiment of the present disclosure.
  • FIG. 27 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the sixth embodiment of the present disclosure
  • FIG. 28 depicts a table of optical data for each lens element of the optical imaging lens according to the sixth embodiment of the present disclosure
  • FIG. 29 depicts a table of aspherical data of the optical imaging lens according to the sixth embodiment of the present disclosure.
  • FIG. 30 depicts a cross-sectional view of the optical imaging lens according to the seventh embodiment of the present disclosure.
  • FIG. 31 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the seventh embodiment of the present disclosure
  • FIG. 32 depicts a table of optical data for each lens element of the optical imaging lens according to the seventh embodiment of the present disclosure
  • FIG. 33 depicts a table of aspherical data of the optical imaging lens according to the seventh embodiment of the present disclosure.
  • FIG. 34 depicts a cross-sectional view of the optical imaging lens according to the eighth embodiment of the present disclosure.
  • FIG. 35 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the eighth embodiment of the present disclosure.
  • FIG. 36 depicts a table of optical data for each lens element of the optical imaging lens according to the eighth embodiment of the present disclosure.
  • FIG. 37 depicts a table of aspherical data of the optical imaging lens according to the eighth embodiment of the present disclosure.
  • FIG. 38 depicts a cross-sectional view of the optical imaging lens according to the ninth embodiment of the present disclosure.
  • FIG. 39 depicts a chart of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens according to the ninth embodiment of the present disclosure.
  • FIG. 40 depicts a table of optical data for each lens element of the optical imaging lens according to the ninth embodiment of the present disclosure
  • FIG. 41 depicts a table of aspherical data of the optical imaging lens according to the ninth embodiment of the present disclosure.
  • FIG. 42A is a table for the values of ImgH/L35, V3+V4+V5+V6, ALT/(G23+G67+G78), (T1+G23)/(T4+G45), (T6+T7+T8)/(T4+T5), (G34+G78)/T6, (T1+T3)/(G45+G56+G67), (AAG+T3)/BFL, TL/(G12+T6+T8), ImgH/(T1+G12+T2), TTL/(T1+G67+T7+G78), AAG/(T1+G56), (G56+T8)/G23, EFL/(T1+T4), (G23+G34+T5)/T7, (T1+T7)/T8, (AAG+T4)/T6, EFL/(G23+G67), (T1+G78)/(T4+T5), and (T1+G12)/T7 as determined
  • FIG. 42B is a table for the values of ImgH/L35, V3+V4+V5+V6, ALT/(G23+G67+G78), (T1+G23)/(T4+G45), (T6+T7+T8)/(T4+T5), (G34+G78)/T6, (T1+T3)/(G45+G56+G67), (AAG+T3)/BFL, TL/(G12+T6+T8), ImgH/(T1+G12+T2), TTL/(T1+G67+T7+G78), AAG/(T1+G56), (G56+T8)/G23, EFL/(T1+T4), (G23+G34+T5)/T7, (T1+T7)/T8, (AAG+T4)/T6, EFL/(G23+G67), (T1+G78)/(T4+T5), and (T1+G12)/T7 as determined
  • optical axis region used in this specification and claims should be interpreted based on the definition listed in the specification by the principle of lexicographer.
  • the optical system may comprise at least one lens element to receive imaging rays that are incident on the optical system over a set of angles ranging from parallel to an optical axis to a half field of view (HFOV) angle with respect to the optical axis.
  • the imaging rays pass through the optical system to produce an image on an image plane.
  • a lens element having positive refracting power (or negative refracting power) means that the paraxial refracting power of the lens element in Gaussian optics is positive (or negative).
  • an object-side (or image-side) surface of a lens element refers to a specific region of that surface of the lens element at which imaging rays can pass through that specific region.
  • Imaging rays include at least two types of rays: a chief ray Lc and a marginal ray Lm (as shown in FIG. 1 ).
  • An object-side (or image-side) surface of a lens element can be characterized as having several regions, including an optical axis region, a periphery region, and, in some cases, one or more intermediate regions, as discussed more fully below.
  • FIG. 1 is a radial cross-sectional view of a lens element 100 .
  • Two referential points for the surfaces of the lens element 100 can be defined: a central point, and a transition point.
  • the central point of a surface of a lens element is a point of intersection of that surface and the optical axis I.
  • a first central point CP 1 may be present on the object-side surface 110 of lens element 100 and a second central point CP 2 may be present on the image-side surface 120 of the lens element 100 .
  • the transition point is a point on a surface of a lens element, at which the line tangent to that point is perpendicular to the optical axis I.
  • the optical boundary OB of a surface of the lens element is defined as a point at which the radially outermost marginal ray Lm passing through the surface of the lens element intersects the surface of the lens element. All transition points lie between the optical axis I and the optical boundary OB of the surface of the lens element. If multiple transition points are present on a single surface, then these transition points are sequentially named along the radial direction of the surface with reference numerals starting from the first transition point. For example, the first transition point, e.g., TP 1 , (closest to the optical axis I), the second transition point, e.g., TP 2 , (as shown in FIG. 4 ), and the Nth transition point (farthest from the optical axis I).
  • the region of a surface of the lens element from the central point to the first transition point TP 1 is defined as the optical axis region, which includes the central point.
  • the region located radially outside of the farthest Nth transition point from the optical axis I to the optical boundary OB of the surface of the lens element is defined as the periphery region.
  • the shape of a region is convex if a collimated ray being parallel to the optical axis I and passing through the region is bent toward the optical axis I such that the ray intersects the optical axis I on the image side A 2 of the lens element.
  • the shape of a region is concave if the extension line of a collimated ray being parallel to the optical axis I and passing through the region intersects the optical axis I on the object side A 1 of the lens element.
  • the lens element 100 may also have a mounting portion 130 extending radially outward from the optical boundary OB.
  • the mounting portion 130 is typically used to physically secure the lens element to a corresponding element of the optical system (not shown). Imaging rays do not reach the mounting portion 130 .
  • the structure and shape of the mounting portion 130 are only examples to explain the technologies, and should not be taken as limiting the scope of the present disclosure.
  • the mounting portion 130 of the lens elements discussed below may be partially or completely omitted in the following drawings.
  • optical axis region Z 1 is defined between central point CP and first transition point TP 1 .
  • Periphery region Z 2 is defined between TP 1 and the optical boundary OB of the surface of the lens element.
  • Collimated ray 211 intersects the optical axis I on the image side A 2 of lens element 200 after passing through optical axis region Z 1 , i.e., the focal point of collimated ray 211 after passing through optical axis region Z 1 is on the image side A 2 of the lens element 200 at point R in FIG. 2 . Accordingly, since the ray itself intersects the optical axis I on the image side A 2 of the lens element 200 , optical axis region Z 1 is convex.
  • collimated ray 212 diverges after passing through periphery region Z 2 .
  • the extension line EL of collimated ray 212 after passing through periphery region Z 2 intersects the optical axis I on the object side A 1 of lens element 200 , i.e., the focal point of collimated ray 212 after passing through periphery region Z 2 is on the object side A 1 at point M in FIG. 2 .
  • periphery region Z 2 is concave.
  • the first transition point TP 1 is the border of the optical axis region and the periphery region, i.e., TP 1 is the point at which the shape changes from convex to concave.
  • R the paraxial radius of shape of a lens surface in the optical axis region.
  • the R value is commonly used in conventional optical design software such as Zemax and CodeV.
  • the R value usually appears in the lens data sheet in the software.
  • a positive R value defines that the optical axis region of the object-side surface is convex
  • a negative R value defines that the optical axis region of the object-side surface is concave.
  • a positive R value defines that the optical axis region of the image-side surface is concave
  • a negative R value defines that the optical axis region of the image-side surface is convex
  • FIG. 3 , FIG. 4 and FIG. 5 illustrate examples of determining the shape of lens element regions and the boundaries of regions under various circumstances, including the optical axis region, the periphery region, and intermediate regions as set forth in the present specification.
  • FIG. 3 is a radial cross-sectional view of a lens element 300 .
  • TP 1 appears within the optical boundary OB of the image-side surface 320 of the lens element 300 .
  • Optical axis region Z 1 and periphery region Z 2 of the image-side surface 320 of lens element 300 are illustrated.
  • the R value of the image-side surface 320 is positive (i.e., R>0). Accordingly, the optical axis region Z 1 is concave.
  • each region demarcated by the transition point will have an opposite shape to the shape of the adjacent region(s). Accordingly, the transition point will define a transition in shape, changing from concave to convex at the transition point or changing from convex to concave.
  • the shape of the optical axis region Z 1 is concave
  • the shape of the periphery region Z 2 will be convex as the shape changes at the transition point TP 1 .
  • FIG. 4 is a radial cross-sectional view of a lens element 400 .
  • a first transition point TP 1 and a second transition point TP 2 are present on the object-side surface 410 of lens element 400 .
  • the optical axis region Z 1 of the object-side surface 410 is defined between the optical axis I and the first transition point TP 1 .
  • the R value of the object-side surface 410 is positive (i.e., R>0). Accordingly, the optical axis region Z 1 is convex.
  • the periphery region Z 2 of the object-side surface 410 which is also convex, is defined between the second transition point TP 2 and the optical boundary OB of the object-side surface 410 of the lens element 400 . Further, intermediate region Z 3 of the object-side surface 410 , which is concave, is defined between the first transition point TP 1 and the second transition point TP 2 .
  • the object-side surface 410 includes an optical axis region Z 1 located between the optical axis I and the first transition point TP 1 , an intermediate region Z 3 located between the first transition point TP 1 and the second transition point TP 2 , and a periphery region Z 2 located between the second transition point TP 2 and the optical boundary OB of the object-side surface 410 . Since the shape of the optical axis region Z 1 is designed to be convex, the shape of the intermediate region Z 3 is concave as the shape of the intermediate region Z 3 changes at the first transition point TP 1 , and the shape of the periphery region Z 2 is convex as the shape of the periphery region Z 2 changes at the second transition point TP 2 .
  • FIG. 5 is a radial cross-sectional view of a lens element 500 .
  • Lens element 500 has no transition point on the object-side surface 510 of the lens element 500 .
  • the optical axis region Z 1 is defined as the region between 0-50% of the distance between the optical axis I and the optical boundary OB of the surface of the lens element and the periphery region is defined as the region between 50%-100% of the distance between the optical axis I and the optical boundary OB of the surface of the lens element.
  • the optical axis region Z 1 of the object-side surface 510 is defined between the optical axis I and 50% of the distance between the optical axis I and the optical boundary OB.
  • the R value of the object-side surface 510 is positive (i.e., R>0). Accordingly, the optical axis region Z 1 is convex.
  • the periphery region Z 2 of the object-side surface 510 is also convex.
  • lens element 500 may have a mounting portion (not shown) extending radially outward from the periphery region Z 2 .
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • the optical imaging lens can correct the spherical aberration and the filed curvature aberration, and reduce the distortion aberration.
  • an optical axis region of the image-side surface of the sixth lens element may be concave in conjunction with an optical axis region of the image-side surface of the seventh lent element may be convex, or an optical axis region of the object-side surface of the eighth lens element may be concave.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element.
  • the system length of the optical imaging lens may be shortened while maintaining large image height.
  • the optical imaging lens defined below may constitute better configuration: 3.300 ⁇ ImgH/L35 ⁇ 4.700.
  • an optical imaging lens may comprise a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially from an object side to an image side along an optical axis.
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element may have an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through.
  • a periphery region of the image-side surface of the third lens element may be convex
  • the seventh lens element may have positive refracting power
  • a periphery region of the object-side surface of the seventh lens element may be concave, in conjunction with a periphery region of the object-side surface of the second lens element may be convex, a periphery region of the image-side surface of the second lens element may be concave, or an optical axis region of the image-side surface of the sixth lens element may be concave.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element.
  • the optical imaging lens can control the angle of deflection of the light, so that the lens shape does not need to be designed to be too curved, which helps to improve the manufacturing yield. In addition, conforming to this range also helps to improve the chromatic aberration.
  • the optical imaging lens defined below may constitute better configuration: 130.000 V3+V4+V5+V6 ⁇ 150.000.
  • the optical imaging lens of the present disclosure to shorten the system length of optical imaging lens and ensure imaging quality, reducing the air gap between lens elements or moderately reducing the thickness of lens elements can be as a means; however, the difficulty of manufacture should be considered. Accordingly, the optical imaging lens satisfies the below Inequalities may constitute better configuration:
  • ALT/(G23+G67+G78) ⁇ 3.200 may constitute better configuration: 1.700 ⁇ ALT/(G23+G67+G78) ⁇ 3.200.
  • TL/(G12+T6+T8) ⁇ 5.000 may constitute better configuration: 5.000 ⁇ TL/(G12+T6+T8) ⁇ 7.000.
  • ImgH/(T1+G12+T2) ⁇ 4.000 defined below may constitute better configuration: 4.000 ⁇ ImgH/(T1+G12+T2) ⁇ 5.800.
  • TTL/(T1+G67+T7+G78) ⁇ 4.000 may constitute better configuration: 2.200 ⁇ TTL/(T1+G67+T7+G78) ⁇ 4.000.
  • any combination of the parameters of the embodiment may be selected to increase the optical imaging lens limitation to facilitate the optical imaging lens design of the same architecture of the present invention.
  • the optical imaging lens may satisfy any one of inequalities described above, the optical imaging lens according to the disclosure herein may achieve a shortened system length of the optical imaging lens and an enlarged aperture, improve an imaging quality or assembly yield, and effectively improve drawbacks of a typical optical imaging lens.
  • FIG. 6 illustrates an example cross-sectional view of an optical imaging lens 1 according to a first example embodiment.
  • FIG. 7 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 1 according to the first example embodiment.
  • FIG. 8 illustrates an example table of optical data of each lens element of the optical imaging lens 1 according to the first example embodiment.
  • FIG. 9 depicts an example table of aspherical data of the optical imaging lens 1 according to the first example embodiment.
  • the optical imaging lens 1 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • a filtering unit TF and an image plane IMA of an image sensor may be positioned at the image side A 2 of the optical imaging lens 1 .
  • Each of the first, second, third, fourth, fifth, sixth, seventh, and eighth lens element L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , L 7 , L 8 and the filtering unit TF may comprise an object-side surface L 1 A 1 /L 2 A 1 /L 3 A 1 /L 4 A 1 /L 5 A 1 /L 6 A 1 /L 7 A 1 /L 8 A 1 /TFA facing toward the object side A 1 and an image-side surface LA 2 /L 2 A 2 /L 3 A 2 /L 4 A 2 /L 5 A 2 /L 6 A 2 /L 7 A 2 /L 8 A 2 /TFA 2 facing toward the image side A 2 .
  • the example embodiment of the illustrated filtering unit TF may be positioned between the eighth lens element L 8 and the image plane IMA.
  • the filtering unit TF may be a filter for preventing light with certain wavelength from reaching the mage plane IMA and affecting imaging quality.
  • each lens element of the optical imaging lens 1 will now be described with reference to the drawings.
  • the lens elements L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , L 7 , and L 8 of the optical imaging lens 1 may be constructed using plastic materials in this embodiment, which can reduce the weight of the lens elements and save costs, but not limited to this.
  • An example embodiment of the first lens element L 1 may have positive refracting power. Both of the optical axis region L 1 A 1 C and the periphery region L 1 A 1 P of the object-side surface L 1 A 1 of the first lens element L 1 may be convex. Both of the optical axis region L 1 A 2 C and the periphery region L 1 A 2 P of the image-side surface LA 2 of the first lens element L 1 may be concave.
  • An example embodiment of the second lens element L 2 may have negative refracting power. Both of the optical axis region L 2 A 1 C and the periphery region L 2 A 1 P of the object-side surface L 2 A 1 of the second lens element L 2 may be convex. Both of the optical axis region L 2 A 2 C and the periphery region L 2 A 2 P of the image-side surface L 2 A 2 of the second lens element L 2 may be concave.
  • An example embodiment of the third lens element L 3 may have positive refracting power.
  • the optical axis region L 3 A 1 C of the object-side surface L 3 A 1 of the third lens element L 3 may be convex.
  • the periphery region L 3 A 1 P of the object-side surface L 3 A 1 of the third lens element L 3 may be concave.
  • Both of the optical axis region L 3 A 2 C and the periphery region L 3 A 2 P of the image-side surface L 3 A 2 of the third lens element L 3 may be convex.
  • An example embodiment of the fourth lens element L 4 may have positive refracting power. Both of the optical axis region L 4 A 1 C and the periphery region L 4 A 1 P of the object-side surface L 4 A 1 of the fourth lens element L 4 may be concave. Both of the optical axis region L 4 A 2 C and the periphery region L 4 A 2 P of the image-side surface L 4 A 2 of the fourth lens element L 4 may be convex.
  • An example embodiment of the fifth lens element L 5 may have negative refracting power. Both of the optical axis region L 5 A 1 C and the periphery region L 5 A 1 P of the object-side surface L 5 A 1 of the fifth lens element L 5 may be concave. Both of the optical axis region L 5 A 2 C and the periphery region L 5 A 2 P of the image-side surface L 5 A 2 of the fifth lens element L 5 may be convex.
  • An example embodiment of the sixth lens element L 6 may have positive refracting power.
  • the optical axis region L 6 A 1 C of the object-side surface L 6 A 1 of the sixth lens element L 6 may be convex.
  • the periphery region L 6 A 1 P of the object-side surface L 6 A 1 of the sixth lens element L 6 may be concave.
  • the optical axis region L 6 A 2 C of the image-side surface L 6 A 2 of the sixth lens element L 6 may be concave.
  • the periphery region L 6 A 2 P of the image-side surface L 6 A 2 of the sixth lens element L 6 may be convex.
  • An example embodiment of the seventh lens element L 7 may have positive refracting power.
  • the optical axis region L 7 A 1 C of the object-side surface L 7 A 1 of the seventh lens element L 7 may be convex.
  • the periphery region L 7 A 1 P of the object-side surface L 7 A 1 of the seventh lens element L 7 may be concave.
  • Both of the optical axis region L 7 A 2 C and the periphery region L 7 A 2 P of the image-side surface L 7 A 2 of the seventh lens element L 7 may be convex.
  • An example embodiment of the eighth lens element L 8 may have negative refracting power. Both of the optical axis region L 8 A 1 C and the periphery region L 8 A 1 P of the object-side surface L 8 A 1 of the eighth lens element L 8 may be concave. The optical axis region L 8 A 2 C of the image-side surface L 8 A 2 of the eighth lens element L 8 may be concave. The periphery region L 8 A 2 P of the image-side surface L 8 A 2 of the eighth lens element L 8 may be convex.
  • Lens elements of the optical imaging lens having refracting power may be composed of the first lens element L 1 , the second lens element L 2 , the third lens element L 3 , the fourth lens element L 4 , the fifth lens element L 5 , the sixth lens element L 6 , the seventh lens element L 7 , and the eighth lens element L 8 .
  • the totaled 16 aspherical surfaces including the object-side surface L 1 A 1 and the image-side surface L 1 A 2 of the first lens element L 1 , the object-side surface L 2 A 1 and the image-side surface L 2 A 2 of the second lens element L 2 , the object-side surface L 3 A 1 and the image-side surface L 3 A 2 of the third lens element L 3 , the object-side surface L 4 A 1 and the image-side surface L 4 A 2 of the fourth lens element L 4 , the object-side surface L 5 A 1 and the image-side surface L 5 A 2 of the fifth lens element L 5 , the object-side surface L 6 A 1 and the image-side surface L 6 A 2 of the sixth lens element L 6 , the object-side surface L 7 A 1 and the image-side surface L 7 A 2 of the seventh lens element L 7 , and the object-side surface L 8 A 1 and the image-side surface L 8 A 2 of the eighth lens element L 8 may all be defined by the following aspherical formula:
  • R represents the radius of curvature of the surface of the lens element
  • Z represents the depth of the aspherical surface (the perpendicular distance between the point of the aspherical surface at a distance Y from the optical axis and the tangent plane of the vertex on the optical axis of the aspherical surface);
  • Y represents the perpendicular distance between the point of the aspherical surface and the optical axis
  • K represents a conic constant
  • a 2i represents an aspherical coefficient of 2i th level.
  • FIG. 7( a ) shows a longitudinal spherical aberration for three representative wavelengths (470 nm, 555 nm and 650 nm), wherein the vertical axis of FIG. 7( a ) defines the field of view.
  • FIG. 7( b ) shows the field curvature aberration in the sagittal direction for three representative wavelengths (470 nm, 555 nm and 650 nm), wherein the vertical axis of FIG. 7( b ) defines the image height.
  • FIG. 7( c ) shows the field curvature aberration in the tangential direction for three representative wavelengths (470 nm, 555 nm and 650 nm), wherein the vertical axis of FIG.
  • FIG. 7( c ) defines the image height.
  • FIG. 7( d ) shows a variation of the distortion aberration, wherein the vertical axis of FIG. 7( d ) defines the image height.
  • the three curves with different wavelengths (470 nm, 555 nm and 650 nm) may represent that off-axis light with respect to these wavelengths may be focused around an image point. From the vertical deviation of each curve shown in FIG. 7( a ) , the offset of the off-axis light relative to the image point may be within about 0.025 mm. Therefore, the first embodiment may improve the longitudinal spherical aberration with respect to different wavelengths. Referring to FIG.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about 0.06 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about 0.05 mm.
  • the variation of the distortion aberration may be within about 12%.
  • the distance from the object-side surface L 1 A 1 of the first lens element L 1 to the image plane IMA along the optical axis (TTL), the system length, may be about 5.543 mm
  • F-number (Fno) may be about 1.599
  • the half field of view (HFOV) may be about 43.152 degrees
  • the system focal length (EFL) of the optical imaging lens 1 may be about 4.332 mm
  • the image height of the optical imaging lens 1 (ImgH) may be about 4.500 mm.
  • the present embodiment may provide an optical imaging lens 1 having a shortened system length of the optical imaging lens and an increased field of view while improving assembly yield.
  • FIG. 42A Please refer to FIG. 42A for the values of ImgH/L35, V3+V4+V5+V6, ALT/(G23+G67+G78), (T1+G23)/(T4+G45), (T6+T7+T8)/(T4+T5), (G34+G78)/T6, (T1+T3)/(G45+G56+G67), (AAG+T3)/BFL, TL/(G12+T6+T8), ImgH/(T1+G12+T2), TTL/(T1+G67+T7+G78), AAG/(T1+G56), (G56+T8)/G23, EFL/(T1+T4), (G23+G34+T5)/T7, (T1+T7)/T8, (AAG+T4)/T6, EFL/(G23+G67), (T1+G78)/(T4+T5), and (T1+G12)/T
  • FIG. 10 illustrates an example cross-sectional view of an optical imaging lens 2 according to a second example embodiment.
  • FIG. 11 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 2 according to the second example embodiment.
  • FIG. 12 shows an example table of optical data of each lens element of the optical imaging lens 2 according to the second example embodiment.
  • FIG. 13 shows an example table of aspherical data of the optical imaging lens 2 according to the second example embodiment.
  • the optical imaging lens 2 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 2 may include the refracting power of the sixth lens element L 6 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element. More specifically, the sixth lens element L 6 of the optical imaging lens 2 may have negative refracting power.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.035 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.08 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.14 mm.
  • the variation of the distortion aberration of the optical imaging lens 2 may be within about ⁇ 9%.
  • the distortion aberration may be smaller, the system length may be shorter, and the half field of view may be larger in the second embodiment as shown in FIG. 11 and FIG. 12 .
  • FIG. 14 illustrates an example cross-sectional view of an optical imaging lens 3 according to a third example embodiment.
  • FIG. 15 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 3 according to the third example embodiment.
  • FIG. 16 shows an example table of optical data of each lens element of the optical imaging lens 3 according to the third example embodiment.
  • FIG. 17 shows an example table of aspherical data of the optical imaging lens 3 according to the third example embodiment.
  • the optical imaging lens 3 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 3 may include the refracting power of the fourth lens element L 4 , the refracting power of the sixth lens element L 6 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element. More specifically, the fourth lens element L 4 of the optical imaging lens 3 may have negative refracting power, and the sixth lens element L 6 of the optical imaging lens 3 may have negative refracting power.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.02 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.03 mm.
  • the variation of the distortion aberration of the optical imaging lens 3 may be within about ⁇ 14%.
  • the longitudinal spherical aberration and the field curvature aberration in the sagittal direction and the tangential direction may be smaller, and the half field of view may be larger in the third embodiment as shown in FIG. 15 and FIG. 16 .
  • FIG. 42A Please refer to FIG. 42A for the values of ImgH/L35, V3+V4+V5+V6, ALT/(G23+G67+G78), (T1+G23)/(T4+G45), (T6+T7+T8)/(T4+T5), (G34+G78)/T6, (T1+T3)/(G45+G56+G67), (AAG+T3)/BFL, TL/(G12+T6+T8), ImgH/(T1+G12+T2), TTL/(T1+G67+T7+G78), AAG/(T1+G56), (G56+T8)/G23, EFL/(T1+T4), (G23+G34+T5)/T7, (T1+T7)/T8, (AAG+T4)/T6, EFL/(G23+G67), (T1+G78)/(T4+T5), and (T1+G12)/T
  • FIG. 18 illustrates an example cross-sectional view of an optical imaging lens 4 according to a fourth example embodiment.
  • FIG. 19 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 4 according to the fourth example embodiment.
  • FIG. 20 shows an example table of optical data of each lens element of the optical imaging lens 4 according to the fourth example embodiment.
  • FIG. 21 shows an example table of aspherical data of the optical imaging lens 4 according to the fourth example embodiment.
  • the optical imaging lens 4 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 4 may include a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.04 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.04 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.05 mm.
  • the variation of the distortion aberration of the optical imaging lens 4 may be within about ⁇ 14%.
  • the field curvature aberration in the sagittal direction may be smaller, and the half field of view may be larger, and the system length may be shorter in the fourth embodiment as shown in FIG. 19 and FIG. 20 .
  • FIG. 42A Please refer to FIG. 42A for the values of ImgH/L35, V3+V4+V5+V6, ALT/(G23+G67+G78), (T1+G23)/(T4+G45), (T6+T7+T8)/(T4+T5), (G34+G78)/T6, (T1+T3)/(G45+G56+G67), (AAG+T3)/BFL, TL/(G12+T6+T8), ImgH/(T1+G12+T2), TTL/(T1+G67+T7+G78), AAG/(T1+G56), (G56+T8)/G23, EFL/(T1+T4), (G23+G34+T5)/T7, (T1+T7)/T8, (AAG+T4)/T6, EFL/(G23+G67), (T1+G78)/(T4+T5), and (T1+G12)/T
  • FIG. 22 illustrates an example cross-sectional view of an optical imaging lens 5 according to a fifth example embodiment.
  • FIG. 23 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 5 according to the fifth example embodiment.
  • FIG. 24 shows an example table of optical data of each lens element of the optical imaging lens 5 according to the fifth example embodiment.
  • FIG. 25 shows an example table of aspherical data of the optical imaging lens 5 according to the fifth example embodiment.
  • the optical imaging lens 5 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 5 may include the refracting power of the sixth lens element L 6 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element. More specifically, the sixth lens element L 6 of the optical imaging lens 5 may have negative refracting power.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.045 mm.
  • the variation of the distortion aberration of the optical imaging lens 5 may be within about ⁇ 9%.
  • the distortion aberration and the field curvature aberration in the sagittal direction and the tangential direction may be smaller, and the half field of view may be larger in the fifth embodiment as shown in FIG. 23 and FIG. 24 .
  • FIG. 42A Please refer to FIG. 42A for the values of ImgH/L35, V3+V4+V5+V6, ALT/(G23+G67+G78), (T1+G23)/(T4+G45), (T6+T7+T8)/(T4+T5), (G34+G78)/T6, (T1+T3)/(G45+G56+G67), (AAG+T3)/BFL, TL/(G12+T6+T8), ImgH/(T1+G12+T2), TTL/(T1+G67+T7+G78), AAG/(T1+G56), (G56+T8)/G23, EFL/(T1+T4), (G23+G34+T5)/T7, (T1+T7)/T8, (AAG+T4)/T6, EFL/(G23+G67), (T1+G78)/(T4+T5), and (T1+G12)/T
  • FIG. 26 illustrates an example cross-sectional view of an optical imaging lens 6 according to a sixth example embodiment.
  • FIG. 27 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 6 according to the sixth example embodiment.
  • FIG. 28 shows an example table of optical data of each lens element of the optical imaging lens 6 according to the sixth example embodiment.
  • FIG. 29 shows an example table of aspherical data of the optical imaging lens 6 according to the sixth example embodiment.
  • the optical imaging lens 6 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 6 may include the refracting power of the sixth lens element L 6 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element. More specifically, the sixth lens element L 6 of the optical imaging lens 6 may have negative refracting power.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.03 mm.
  • the variation of the distortion aberration of the optical imaging lens 6 may be within about ⁇ 16%.
  • the field curvature aberration in the sagittal direction and the tangential direction may be smaller in the sixth embodiment as shown in FIG. 27 and FIG. 28 .
  • the optical imaging lens 6 may be easier to be manufactured, such that yield thereof may be higher
  • FIG. 30 illustrates an example cross-sectional view of an optical imaging lens 7 according to a seventh example embodiment.
  • FIG. 31 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 7 according to the seventh example embodiment.
  • FIG. 32 shows an example table of optical data of each lens element of the optical imaging lens 7 according to the seventh example embodiment.
  • FIG. 33 shows an example table of aspherical data of the optical imaging lens 7 according to the seventh example embodiment.
  • the optical imaging lens 7 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 7 may include the refracting power of the sixth lens element L 6 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element. More specifically, the sixth lens element L 6 of the optical imaging lens 7 may have negative refracting power.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.03 mm.
  • the variation of the distortion aberration of the optical imaging lens 7 may be within about ⁇ 10%.
  • the distortion aberration and the field curvature aberration in the sagittal direction and the tangential direction may be smaller, the half field of view may be larger in the seventh embodiment as shown in FIG. 31 and FIG. 32 .
  • FIG. 34 illustrates an example cross-sectional view of an optical imaging lens 8 according to an eighth example embodiment.
  • FIG. 35 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 8 according to the eighth example embodiment.
  • FIG. 36 shows an example table of optical data of each lens element of the optical imaging lens 8 according to the eighth example embodiment.
  • FIG. 37 shows an example table of aspherical data of the optical imaging lens 8 according to the eighth example embodiment.
  • the optical imaging lens 8 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 4 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 4 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 8 may include the refracting power of the sixth lens element L 6 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element. More specifically, the sixth lens element L 6 of the optical imaging lens 8 may have negative refracting power.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.025 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.03 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.04 mm.
  • the variation of the distortion aberration of the optical imaging lens 8 may be within about ⁇ 10%.
  • the distortion aberration and the field curvature aberration in the sagittal direction and the tangential direction may be smaller, and the half field of view may be larger in the eighth embodiment as shown in FIG. 35 and FIG. 36 .
  • FIG. 38 illustrates an example cross-sectional view of an optical imaging lens 9 according to a ninth example embodiment.
  • FIG. 39 shows example charts of a longitudinal spherical aberration and other kinds of optical aberrations of the optical imaging lens 9 according to the ninth example embodiment.
  • FIG. 40 shows an example table of optical data of each lens element of the optical imaging lens 9 according to the ninth example embodiment.
  • FIG. 41 shows an example table of aspherical data of the optical imaging lens 9 according to the ninth example embodiment.
  • the optical imaging lens 9 of the present embodiment in an order from an object side A 1 to an image side A 2 along an optical axis, may comprise an aperture stop STO, a first lens element L 1 , a second lens element L 2 , a third lens element L 3 , a fourth lens element L 4 , a fifth lens element L 5 , a sixth lens element L 6 , a seventh lens element L 7 , and an eighth lens element L 8 .
  • the arrangement of the convex or concave surface structures including the object-side surfaces L 1 A 1 , L 2 A 1 , L 3 A 1 , L 5 A 1 , L 6 A 1 , L 7 A 1 , L 8 A 1 and the image-side surfaces L 1 A 2 , L 2 A 2 , L 3 A 2 , L 5 A 2 , L 6 A 2 , L 7 A 2 , L 8 A 2 may be generally similar to the optical imaging lens 1 , but the differences between the optical imaging lens 1 and the optical imaging lens 9 may include the refracting power of the fourth lens element L 4 , the refracting power of the fifth lens element L 5 , the refracting power of the sixth lens element L 6 , the concave or convex surface structures of the object-side surface L 4 A 1 and the image-side surface L 4 A 2 , a radius of curvature, a thickness, aspherical data, and/or an system focal length of each lens element.
  • the fourth lens element L 4 may have negative refracting power
  • the fifth lens element L 5 may have positive refracting power
  • the sixth lens element L 6 may have negative refracting power
  • the optical axis region L 4 A 1 C of the object-side surface L 4 A 1 of the fourth lens element L 4 may be convex
  • the optical axis region L 4 A 2 C of the image-side surface L 4 A 2 of the fourth lens element L 4 may be concave in the ninth embodiment.
  • the offset of the off-axis light relative to the image point may be within about ⁇ 0.06 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.06 mm.
  • the focus variation with respect to the three different wavelengths (470 nm, 555 nm and 650 nm) in the whole field may fall within about ⁇ 0.06 mm.
  • the variation of the distortion aberration of the optical imaging lens 9 may be within about ⁇ 30%.
  • the system length may be shorter in the ninth embodiment as shown in FIG. 39 and FIG. 40 .
  • FIGS. 42A and 42B show the values of optical parameters of all embodiments, and it may be clear that the optical imaging lens of any one of the nine embodiments may satisfy the Inequalities (1)-(20).
  • the longitudinal spherical aberration, the field curvature aberration and the variation of the distortion aberration of each embodiment may meet the use requirements of various electronic products which implement an optical imaging lens.
  • the off-axis light with respect to 470 nm, 555 nm and 650 nm wavelengths may be focused around an image point, and the offset of the off-axis light for each curve relative to the image point may be controlled to effectively inhibit the longitudinal spherical aberration, the field curvature aberration and/or the variation of the distortion aberration.
  • the distance between the 470 nm, 555 nm and 650 nm wavelengths may indicate that focusing ability and inhibiting ability for dispersion may be provided for different wavelengths.
  • the optical imaging lens may satisfy any one of inequalities described above, the optical imaging lens according to the disclosure herein may achieve a shortened length of the lens, reduced spherical aberration, field curvature aberration, and distortion aberration of the optical system, and an increased field of view of the optical imaging system, improve an imaging quality or assembly yield, and effectively improve drawbacks of a typical optical imaging lens.

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CN112394487B (zh) * 2020-12-09 2023-06-02 玉晶光电(厦门)有限公司 光学成像镜头
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CN115407488A (zh) * 2022-08-31 2022-11-29 江西晶超光学有限公司 光学镜头、摄像模组及电子设备

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