CN114556181A - Imaging lens, camera module, and imaging apparatus - Google Patents

Imaging lens, camera module, and imaging apparatus Download PDF

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Publication number
CN114556181A
CN114556181A CN201980101131.XA CN201980101131A CN114556181A CN 114556181 A CN114556181 A CN 114556181A CN 201980101131 A CN201980101131 A CN 201980101131A CN 114556181 A CN114556181 A CN 114556181A
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Prior art keywords
lens
imaging
optical system
group optical
refractive power
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CN201980101131.XA
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Chinese (zh)
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桂木大午
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication of CN114556181A publication Critical patent/CN114556181A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • 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

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

Abstract

An imaging lens (21) includes: a front group optical system (31) disposed on the object side; and a rear group optical system (32) disposed on the imaging surface side, wherein the front group optical system (31) includes at least one lens having a negative refractive power and at least one lens having a positive refractive power, the rear group optical system (32) includes an aperture stop (4) and at least one lens having a negative refractive power, the lens located closest to the object side in the front group optical system (31) is a lens having a negative refractive power and serving as a lens protection filter, and an aspherical shape having an inflection point is provided on a surface on the imaging surface side of the lens located closest to the imaging surface side in the rear group optical system (32).

Description

Imaging lens, camera module, and imaging apparatus
Technical Field
The present disclosure relates to an imaging lens, a camera module, and an imaging apparatus, and more particularly, to an imaging lens, a camera module, and an imaging apparatus that are small and capable of achieving good optical performance.
Background
In general, an optical system composed of a front group optical system having a negative refractive power and a rear group optical system having a positive refractive power (in order from the object side) is a well-known imaging optical system for an imaging apparatus such as an in-vehicle camera, a monitoring camera, a video camera, and an electronic still camera.
In recent years, portable imaging apparatuses such as cellular phones and digital cameras have been widely used. With recent miniaturization of imaging apparatuses, an imaging lens mounted on the imaging apparatus is also required to be miniaturized.
Therefore, in order to mount a wide-angle lens as an example of an imaging lens on a small-sized digital device such as a mobile phone or a motion camera, further downsizing is required. In addition, since the resolution of an imaging element mounted on an imaging apparatus is also increasing, the optical characteristics of an imaging lens mounted on the imaging apparatus also need to be improved to accommodate the higher resolution of the imaging element.
However, a compact wide-angle lens having a back focal length sufficiently shortened and providing excellent optical characteristics has not been effectively proposed.
Disclosure of Invention
The present disclosure is directed to solving at least one of the above technical problems. Accordingly, the present disclosure needs to provide an imaging lens, a camera module, and an imaging apparatus.
According to the present disclosure, the imaging lens includes:
a front group optical system disposed on the object side; and
a rear group optical system disposed on the imaging surface side, wherein
The front group optical system includes at least one lens having a negative refractive power and at least one lens having a positive refractive power,
the rear group optical system includes an aperture stop and at least one lens having a negative refractive power,
the lens located closest to the object side in the front group optical system is a lens having a negative refractive power and serving as a lens protective filter, an
The lens located closest to the imaging surface side in the rear group optical system has an aspherical shape having an inflection point on the surface on the imaging surface side.
In one example, the imaging lens may satisfy the following conditional expression,
0.5<(r11+r12)/(r11-r12)<2.5,
where r11 is the center radius of curvature of the object-side surface of the lens located closest to the object side, and r12 is the center radius of curvature of the imaging-surface-side surface of the lens located closest to the object side.
In one example, the imaging lens may satisfy the following conditional expression,
∑d/f<8.0,
where Σ d is the distance on the optical axis from the vertex of the object-side surface of the lens located closest to the object side to the imaging surface, and f is the focal length of the entire optical system.
In one example, the imaging lens may satisfy the following conditional expression:
0.5<fs/f<13,
where fs is the composite focal length of the rear group optical system and f is the focal length of the entire optical system.
In one example, the lens located closest to the imaging surface side may be a lens having a negative refractive power.
In one example, a surface on the imaging surface side of the lens located closest to the imaging surface side may have a concave shape near the optical axis and a convex shape at the peripheral portion.
In one example, the angle of view of the imaging lens may be 100 degrees or more.
In one example, the lens located closest to the imaging surface side may be made of plastic.
According to the present disclosure, a camera module includes:
an imaging lens; and
an image sensor including an imaging surface.
According to the present disclosure, an imaging device includes a camera module.
Drawings
The foregoing and other aspects and advantages of the embodiments of the present application will become more apparent and more readily appreciated from the following detailed description, taken in conjunction with the accompanying drawings, wherein:
fig. 1 is a configuration diagram of a camera module according to a first example of the present disclosure;
fig. 2 is an aberration diagram of a camera module according to a first example of the present disclosure;
fig. 3 is a configuration diagram of a camera module according to a second example of the present disclosure;
fig. 4 is an aberration diagram of a camera module according to a second example of the present disclosure;
fig. 5 is a configuration diagram of a camera module according to a third example of the present disclosure;
fig. 6 is an aberration diagram of a camera module according to a third example of the present disclosure;
fig. 7 is a configuration diagram of a camera module according to a fourth example of the present disclosure;
fig. 8 is an aberration diagram of a camera module according to a fourth example of the present disclosure;
fig. 9 is a configuration diagram of a camera module according to a fifth example of the present disclosure; and
fig. 10 is an aberration diagram of a camera module according to a fifth example of the present disclosure.
Detailed Description
Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Throughout the specification, the same or similar elements and elements having the same or similar functions are denoted by the same reference numerals. The embodiments described in this disclosure with reference to the drawings are illustrative in nature and are intended to be illustrative of the disclosure, and should not be construed as limiting the disclosure.
[ brief summary of disclosure ]
First, an outline of the present disclosure will be described. The camera module applied in the present disclosure is configured as shown in fig. 1, 3, 5, 7, and 9. In the figure, a chain line indicates an optical axis of the camera module.
The camera module 11 includes an imaging lens 21, an optical filter 22, and an image sensor 23.
The imaging lens 21 is, for example, an ultra-wide-angle lens having an angle of 100 degrees or more than 100 degrees. The imaging lens 21 includes a front group optical system 31 and a rear group optical system 32. The front group optical system 31 is an optical system that is positionally fixed in the housing of the camera module 11. The rear group optical system 32 is an optical system that can be moved in the optical axis direction by an actuator in the housing of the camera module 11. The rear group optical system 32 can be used for a focusing operation for focusing the imaging lens 21 on the subject.
In the imaging lens 21, a front group optical system 31 and a rear group optical system 32 are arranged in order from the object side to the imaging surface S side.
The front group optical system 31 includes at least one lens having a negative refractive power and at least one lens having a positive refractive power. The rear group optical system 32 includes an aperture stop 4 and at least one lens having a negative refractive power. That is, the aperture stop 4 is provided in the rear group optical system 32, and can move in the optical axis direction together with the lenses in the rear group optical system 32 by the focusing operation.
The image sensor 23 is, for example, a solid-state image sensor such as a Complementary Metal Oxide Semiconductor (CMOS) or a Charge Coupled Device (CCD). The image sensor 23 has an imaging surface S which is an imaging surface of the imaging lens 21. The image sensor 23 receives light incident from the subject (object side) via the imaging lens 21 and the optical filter 22, photoelectrically converts the light, and outputs image data obtained by photoelectric conversion of the light to the subsequent stage.
In order to obtain a compact camera module having an imaging lens with good optical performance, it is preferable to appropriately correct chromatic aberration of the imaging lens and shorten the back focal length of the imaging lens, for example.
Therefore, in the camera module 11, the front group optical system 31 includes at least one lens having a negative refractive power and at least one lens having a positive refractive power, the rear group optical system 32 includes at least one lens having a negative refractive power, and the lens located on the side closest to the imaging surface S in the rear group optical system 32 has an aspherical shape having an inflection point on the surface on the imaging surface S side.
As described above, since the front group optical system 31 includes at least one lens having a negative refractive power and at least one lens having a positive refractive power, chromatic aberration can be appropriately corrected, and good optical performance is obtained. Further, light can be refracted sharply, and the total optical length can be shortened even when the viewing angle is wide.
Further, in the camera module 11, since the rear group optical system 32 includes at least one lens having a negative refractive power, and the lens located on the side closest to the imaging surface S in the rear group optical system 32 has an aspherical shape having an inflection point on the surface on the imaging surface S side, it is possible to make a part of the rear group optical system 32 have a large negative refractive power to shorten the back focal length of the imaging lens 21. In particular, if the lens located on the side closest to the imaging surface S in the rear group optical system 32 has a negative refractive power, that is, has a negative power in the vicinity of the optical axis, it is suitable to shorten the back focal length.
Further, the lens located on the side closest to the imaging surface S in this rear group optical system 32 has an aspherical shape having an inflection point in the vicinity of the lens edge on the surface on the imaging surface S side. Specifically, the surface of the lens on the side of the imaging surface S, which is located closest to the imaging surface S in the rear group optical system 32, is concave at the lens center (i.e., near the optical axis) and convex at the peripheral portion (i.e., near the outer peripheral portion).
In the front group optical system 31, the lens located closest to the object side is a lens that functions as a lens protection filter. Such a lens can be realized, for example, by making a transparent cover in the shape of a lens, which is located on the housing of the camera module 11 on the optical axis to cover the inside of the housing.
Here, in a conventional camera module in which a glass cover (i.e., a transparent cover) is provided on the object side of the imaging lens, a "vignetting" in which light from an object incident on the peripheral side of the imaging lens at a large incident angle is blocked by the glass cover or the lens barrel may occur. Therefore, in the conventional camera module, it has been difficult to achieve a sufficiently wide angle. In contrast, according to the camera module 11 of the present disclosure, by including a lens serving as a lens protection filter instead of a conventional glass cover, a sufficiently wide-angle lens that sufficiently suppresses "vignetting" can be realized. Further, the camera module 11 miniaturizes the imaging lens 21 while maintaining good optical performance of the imaging lens 21 by satisfying the following formula (1).
0.5<(r11+r12)/(r11-r12)<2.5,
In formula (1), r11 is the center radius of curvature of the object-side surface of the lens located closest to the object side in the front group optical system 31, and r12 is the center radius of curvature of the imaging surface S-side surface of the lens located closest to the object side in the front group optical system 31.
As the ratio shown in formula (1) decreases, the imaging lens 21 can be more reliably miniaturized while maintaining good optical performance of the imaging lens 21.
Further, when the camera module 11 satisfies the following formula (2), the imaging lens 21 can be further miniaturized.
Σd/f<8.0 (2)
In formula (2), Σ d is the total length of the imaging lens 21, that is, the distance on the optical axis from the vertex of the object-side surface of the lens located closest to the object side to the imaging surface S; f is the focal length of the entire optical system (the same applies hereinafter).
As the ratio of the total length Σ d to the focal length f shown in equation (2) decreases, the imaging lens 21 becomes smaller. In particular, when the ratio of the total length Σ d to the focal length f is smaller than 8, a sufficiently small imaging lens 21 can be obtained.
For example, if the focal length f is a fixed value, the total length Σ d of the imaging lens 21 becomes shorter as the ratio of the total length Σ d to the focal length f becomes smaller. Further, if the back focal length of the imaging lens 21 is shortened, the total length Σ d of the imaging lens 21 is shortened accordingly.
More preferably, the ratio of the full length Σ d to the focal length f satisfies the following formula (2)'
Σd/f<7.0 (2)’
Further, when the camera module 11 satisfies the following formula (3), the imaging lens 21 can be more reliably miniaturized and good optical performance can be maintained.
0.5<fs/f<13 (3)
In the formula (3), fs is a resultant focal length of the rear group optical system 32 (the same applies hereinafter).
If the value of fs/f is lower than the lower limit value (i.e., 0.5) of the formula (3), the sensitivity of the decentering error of the rear group optical system 32 becomes extremely high, and the manufacturing difficulty becomes high. On the other hand, if the value of fs/f exceeds the upper limit value (i.e., 13) of formula (3), the spherical aberration is excessively corrected and it is difficult to maintain the optical performance.
Further, in consideration of lens molding, it is preferable that an aspherical lens in the imaging lens 21, particularly an aspherical lens of an aspherical shape having an inflection point, is made of a plastic material (glass material). Further, of the lenses constituting the imaging lens 21, a lens having a size equal to or smaller than a certain size may be a lens made of a plastic material, and a lens larger than the certain size may be a lens made of a glass material, because it is difficult to form an aspherical lens or a smaller lens using a glass material different from plastic.
If the above conditions are satisfied, the imaging lens 21 having a small size and sufficient optical performance can be obtained even when the angle of view is 100 degrees or more.
In particular, the lens located closest to the imaging surface S side in the rear group optical system 32 has an aspherical shape with an inflection point on the surface on the imaging surface S side while balancing chromatic aberration between the front group optical system 31 and the rear group optical system 32. Therefore, the back focal length can be further shortened, and the imaging lens 21 having a small size and good optical performance can be obtained.
Such a camera module 11 including the imaging lens 21 is suitable for small digital devices (imaging devices) such as mobile phones, wearable cameras, and monitoring cameras.
< example of configuration of camera module >
Next, a more specific example to which the embodiments of the present disclosure are applied will be described. In the following example, "Si" represents the ordinal number of the i-th surface that increases sequentially from the object side to the imaging surface S side. The optical elements of the respective surfaces are shown together with the respective surface numbers "Si". The mark of "first surface" or "1 st surface" denotes a surface on the object side of the lens, and "second surface" or "2 nd surface" denotes a surface on the imaging surface S side of the lens. "Ri" meansThe central radius of curvature value (mm) of the ith surface. In "Ri", "E + i" denotes an exponential expression with a base 10, i.e. "10i". For example, "1.00E + 18" means "1.00X 1018". Such an exponential expression is also applicable to aspherical coefficients described later. "Di" represents a value of a distance (mm) on an optical axis between the i-th surface and the (i +1) -th surface, "Ndi" represents a refractive index value of a material of the optical element having the i-th surface at d-line (wavelength 587.6nm), "ν Di" represents a value of abbe number of the material of the optical element having the i-th surface at d-line, "Fno" represents an F-number, and "2 ω" represents a viewing angle.
The imaging lens 21 used in the following examples includes a lens having an aspherical surface. The aspherical shape of the lens is defined by the following formula (4).
Z＝C·h2/{1+(1-K·C2·h2)1/2}+ΣAn·hn (4)
(n is an integer greater than 3)
In formula (4), Z is the depth of the aspherical surface, C is paraxial curvature equal to 1/R, h is the distance from the optical axis to the lens surface, K is eccentricity (second-order aspherical coefficient), and An is nth-order aspherical coefficient.
[ first example ] to provide a display device
A first example of applying a specific numerical value to the camera module 11 shown in fig. 1 will be described.
In the first example, the front group optical system 31 includes, in order from the object side toward the imaging surface S side, a first lens L1 and a second lens L2, the first lens L1 having a negative refractive power and a concave surface facing the imaging surface S side, the second lens L2 having a positive refractive power and a convex surface facing the object side. The rear group optical system 32 includes, in order from the object side toward the imaging surface S side: a third lens L3 having a positive refractive power with a convex surface facing the object side and the imaging surface S side, a fourth lens L4 having a negative refractive power with a concave surface facing the object side and the imaging surface S side, a fifth lens L5 having a positive refractive power with a convex surface facing the imaging surface S side, a sixth lens L6 having a positive refractive power with a convex surface facing the imaging surface S side, a seventh lens having a negative refractive power with a concave surface facing the imaging surface S side. In the rear group optical system 32, the aperture stop 4 is disposed on the imaging surface S side with respect to the vertex of the first surface of the third lens L3 and on the object side with respect to the second surface of the third lens L3.
Table 1 shows lens data of the first example, table 2 shows refractive powers of the lenses, and table 3 shows a focal length F, an F-number Fno, an angle of view 2 ω, a total length of the entire system, and a composite focal length of the rear group optical system 32: fs, (r11+ r12)/(r11-r12), Σ d/f, and fs/f, and table 4 shows the values of the aspherical coefficients of the imaging lens 21.
TABLE 1
Si Ri Di Nd vd
1 (virtual surface) 1.00E+10
2(L1 first surface) 1.00E+18 0.8100 1.5168 64.17
3(L1 second surface) 1.3957 0.7385
4(L2 first surface) 3.6633 1.0328 1.6349 23.96
5(L2 second surface) 34.3633 0.5736
6 (aperture diaphragm) 1.00E+18 -0.0100
7(L3 first surface) 2.4710 0.9338 1.5432 56.00
8(L3 second surface) -1.5661 0.0500
9(L4 first surface) -4.7636 0.4000 1.6349 23.96
10(L4 second surface) 3.1443 0.1552
11(L5 first surface) 10.8615 0.7688 1.5432 56.00
12(L5 second surface) -2.6963 0.1628
13(L6 first surface) -1.9168 0.7839 1.5432 56.00
14(L6 second surface) -0.7828 0.0535
15(L7 first surface) 2.2485 0.4451 1.6349 23.96
16(L7 second surface) 0.7358 0.5362
17 (optical filter) 1.00E+18 0.2100 1.5168 64.17
18 (imaging plane) 0.3558
TABLE 2
Lens and lens assembly Refractive power
L1 Negative pole
L2 Is just
L3 Is just
L4 Negative pole
L5 Is just
L6 Is just
L7 Negative pole
TABLE 3
f 1.7633
Fno 2.4096
2ω 134.5
Full length 8.0000
fs 2.1499
(r11+r12)/(r11-r12) 1.0000
∑d/f 4.5369
fs/f 1.2192
TABLE 4
S2 S3 S4
K 0.000000000000000E+00 -1.012501537660640E+00 1.203393953043420E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 0.000000000000000E+00 -1.191809661148940E-04 9.194115328094040E-03
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 0.000000000000000E+00 -1.710298521836980E-03 6.628229388505000E-03
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 0.000000000000000E+00 -3.614183486638790E-04 -7.144379659603080E-04
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 0.000000000000000E+00 5.864051093151640E-05 5.788753364429910E-04
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S5 S7 S8
K 1.000000000000000E+01 2.439128869964770E+00 1.800512114568970E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 7.788734065215300E-02 1.676160386925670E-02 1.500707416392360E-02
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 8.441841482710490E-03 -6.775748684994800E-02 1.293193718606950E-03
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 1.210329809815730E-02 7.367534493416550E-02 -1.845550221189860E-02
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 8.335233446088110E-03 -3.546996938787340E-01 -1.604438435718350E-01
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 1.622344000000000E-01
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S9 S10 S11
K 1.235805071546160E+01 -1.000000000000000E+01 -1.000000000000000E+01
A3 -2.110697495798610E-02 -6.198890211338680E-02 -5.657553791149140E-02
A4 -9.519965855572380E-02 -1.968134082620840E-02 -5.645721070471630E-02
A5 -7.825415425777500E-02 6.036913445024880E-03 -3.074369757849220E-02
A6 7.869985989247040E-02 5.713651107190250E-02 8.095324548105090E-02
A7 4.167773345417170E-02 3.201938002470340E-02 1.633421009151880E-03
A8 -1.527940311714350E-01 -6.402508202763690E-02 -1.741448567536110E-02
A9 -9.959773473014410E-02 -2.418114333612840E-02 -1.615219566983570E-03
A10 -3.455744301658520E-03 4.033684266077380E-02 2.055871576705730E-02
A11 -3.320849891719550E-02 0.000000000000000E+00 -1.623605703072490E-02
A12 6.991250560839450E-02 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S12 S13 S14
K -1.000000000000790E+01 -1.000000000000000E+01 -4.357809389322020E+00
A3 1.117174005817750E-02 -1.584106341445840E-02 3.260019396775830E-02
A4 -1.194409357342880E-01 6.192576287395290E-02 -7.960773082394200E-02
A5 6.198916292620920E-02 -7.422525864565310E-02 8.282516510424040E-02
A6 -1.171820783922330E-02 7.253485272396800E-02 1.697078518648840E-02
A7 -1.787486663869950E-02 1.772257788643560E-02 -1.530972748398100E-02
A8 1.774201257664140E-02 -2.356072450348600E-02 -6.860776672520920E-03
A9 1.925366973382810E-02 -1.805153082511750E-02 1.111640337541160E-05
A10 8.957593242999670E-03 3.653028868858120E-03 1.296485236573290E-05
A11 -8.357770584206050E-03 5.008894534010320E-03 5.468205596116780E-04
A12 -1.262825690260780E-02 -7.308291257157480E-04 2.145181042673630E-05
A13 -1.899646822614490E-02 2.177777165660760E-05 1.948049188958220E-05
A14 9.437956800853720E-03 1.266680289992500E-05 4.791200558704900E-06
A15 2.045361312069030E-02 2.593761783766950E-05 1.456151923350300E-06
A16 -1.075229043971080E-02 1.712589353776240E-05 8.773892693587690E-08
A17 0.000000000000000E+00 9.468283603197430E-06 -2.024887670161480E-07
A18 0.000000000000000E+00 -3.960985380132090E-07 -2.979841524075600E-07
A19 0.000000000000000E+00 -4.707079628314520E-06 -1.675385520399170E-07
A20 0.000000000000000E+00 -4.698311433170090E-06 -1.201437081712660E-07
S15 S16
K -8.834872000000000E-01 -6.285399300000000E+00
A3 9.820800000000000E-03 5.328640000000000E-02
A4 -7.358360000000000E-02 -5.860240000000000E-02
A5 -3.251000000000000E-03 8.639100000000000E-03
A6 1.219390000000000E-02 -1.440100000000000E-03
A7 -1.347000000000000E-03 2.054500000000000E-03
A8 -3.882000000000000E-04 -5.841000000000000E-04
A9 -6.252548600000000E-05 1.751848800000000E-05
A10 -2.679676400000000E-05 2.213117700000000E-05
A11 1.582728100000000E-05 -1.403615500000000E-05
A12 1.770422400000000E-05 -4.012046700000000E-06
A13 -2.572107800000000E-06 -1.182130000000000E-06
A14 -1.011506400000000E-06 4.302953300000000E-08
A15 0.000000000000000E+00 5.512435900000000E-07
A16 0.000000000000000E+00 3.627674100000000E-07
A17 0.000000000000000E+00 -9.826418100000000E-08
A18 0.000000000000000E+00 -3.229425600000000E-08
A19 0.000000000000000E+00 -1.594033800000000E-10
A20 0.000000000000000E+00 1.984375800000000E-09
The aberrations in the first example are shown in figure 2. Fig. 2 shows spherical aberration, astigmatism (field curvature), and distortion as examples of aberrations. Each of these aberration diagrams shows aberration with the d-line (587.56nm) as a reference wavelength. In the spherical aberration diagram, aberrations are also shown with respect to the g-line (435.84nm) and the C-line (656.27 nm). In the graph showing astigmatism, "S" represents a aberration value on a sagittal image plane, and "T" represents a aberration value on a meridional image plane. The same applies to the aberration diagrams in other examples.
As is apparent from the above aberration diagrams, the camera module 11 of the first example can satisfactorily correct various aberrations to obtain excellent optical performance, although it has a small size and a wide angle.
[ second example ] to provide a display device
A second example in which a specific numerical value is applied to the camera module 11 shown in fig. 3 will be described below. In the second example, the front group optical system 31 includes the first lens L1 and the second lens L2, and the rear group optical system 32 includes the third to seventh lenses L3-L7, similarly to the first example. The aperture stop 4 is provided in the rear group optical system 32. Table 5 shows lens data of the second example, table 6 shows refractive powers of the lenses, and table 7 shows values of the focal length F, F-number Fno, angle of view 2 ω, total length, and composite focal length of the rear group optical system 32 of the entire system: fs, (r11+ r12)/(r11-r12), Σ d/f, and fs/f, and table 8 shows the values of the aspherical coefficients of the imaging lens 21.
TABLE 5
Si Ri Di Nd Vd
1 (virtual surface) 1.00E+10
2(L1 first surface) 200.0000 0.8100 1.5432 56.00
3(L1 second surface) 1.3369 0.9399
4(L2 first surface) 3.5154 0.8629 1.6349 23.96
5(L2 second surface) -30.9997 0.6054
6 (aperture diaphragm) 1.00E+18 -0.0100
7(L3 first surface) 2.9116 0.8477 1.5432 56.00
8(L3 second surface) -1.5726 0.0500
9(L4 first surface) -4.8077 0.4000 1.6349 23.96
10(L4 second surface) 2.6616 0.0984
11(L5 first surface) 9.7336 0.8245 1.5432 56.00
12(L5 second surface) -2.7523 0.0721
13(L6 first surface) -2.3204 0.7361 1.5432 56.00
14(L6 second surface) -0.8630 0.0281
15(L7 first surface) 2.1433 0.4161 1.6349 23.96
16(L7 second surface) 0.7938 0.5248
17 (optical filter) 1.00E+18 0.2100 1.5168 64.17
18 (imaging plane) 0.5841
TABLE 6
Lens and lens assembly Refractive power
L1 Negative pole
L2 Is just
L3 Is just
L4 Negative pole
L5 Is just
L6 Is just
L7 Negative pole
TABLE 7
f 1.7391
Fno 2.4671
2ω 152.8
Full length 8.0000
fs 2.3273
(r11+r12)/(r11-r12) 1.0135
∑d/f 4.6001
fs/f 1.3382
TABLE 8
S2 S3 S4
K -1.000000000000020E+01 -9.987051762007530E-01 -1.810347167663190E-01
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 -1.265100000000000E-03 5.387877036173740E-04 -4.683292799167170E-03
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 9.068344000000050E-05 -1.512073383112840E-03 4.939922383529630E-03
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 -1.298880400000000E-06 -3.600234640035140E-04 1.823407650884590E-04
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 -2.078328100000000E-07 3.372268145761420E-05 -5.567404504155170E-05
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S5 S7 S8
K 1.000000000000000E+01 2.181361098608220E-01 1.933430954770980E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 2.849758097041470E-02 6.412483773901190E-05 3.531744355812450E-02
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 2.950938850760680E-03 -1.199458139688920E-01 -4.247372529259700E-02
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 2.666417364582160E-03 2.267292782103920E-01 -4.429017804155380E-02
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 -1.494900759737030E-03 -6.207692860959110E-01 -9.947573013291400E-02
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 1.622344000000000E-01
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S9 S10 S11
K 1.735941871422080E+01 -1.000000000000000E+01 -1.000000000000000E+01
A3 -1.172349574819490E-02 -3.628369260200860E-02 -1.145940697867070E-02
A4 -1.100952085076980E-01 -2.229494838671710E-02 -2.684318656654830E-02
A5 -6.095351307723470E-02 -6.607074119237070E-03 -2.601970547733150E-02
A6 9.440974122098410E-02 5.288936158498220E-02 7.127502362350360E-02
A7 3.952186377818000E-02 3.412611813344530E-02 -1.212657597239370E-02
A8 -1.659356801226240E-01 -6.157349608933860E-02 -2.903434251215050E-02
A9 -1.095548797123990E-01 -2.482564976183630E-02 -6.846020521203180E-03
A10 7.654842209376670E-03 3.657363155874460E-02 2.489236685239480E-02
A11 1.891869528574020E-03 0.000000000000000E+00 -9.079889311319630E-04
A12 1.182107497927120E-01 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S12 S13 S14
K -1.000000000000790E+01 -1.000000000000000E+01 -5.031468391393800E+00
A3 2.986295641753160E-02 -2.083717942592840E-02 1.646308894326660E-02
A4 -1.248460171048860E-01 5.832567434664610E-02 -6.246799245757300E-02
A5 6.301225073671200E-02 -7.807893574147230E-02 8.448121750248510E-02
A6 -1.247746081635200E-02 7.232934570546320E-02 1.717756148459940E-02
A7 -1.980083715195850E-02 1.824706173521460E-02 -1.520306699942680E-02
A8 1.652512750038330E-02 -2.288559315627660E-02 -6.833345444643280E-03
A9 1.902157245377290E-02 -1.751481437111840E-02 -1.301040781858700E-05
A10 9.274099674804160E-03 3.876264557570060E-03 -1.920506132890850E-05
A11 -7.858195744863730E-03 5.098107880944090E-03 5.197509814183390E-04
A12 -1.217097767295380E-02 -6.958503025787910E-04 6.748702304300810E-06
A13 -1.867185505284270E-02 3.008077332157400E-06 1.465203625339120E-05
A14 9.629563397444840E-03 -1.970283906325950E-05 3.158191623617830E-06
A15 2.053254669058340E-02 -1.233177357859090E-05 1.172459095782470E-06
A16 -1.075551675041170E-02 -8.867078453820570E-06 3.595663900245830E-07
A17 0.000000000000000E+00 -7.056445097495670E-06 -1.718810815493640E-08
A18 0.000000000000000E+00 -4.647908562054580E-06 -1.764905568833210E-07
A19 0.000000000000000E+00 -3.353193999579260E-06 -1.808735592760380E-07
A20 0.000000000000000E+00 -4.488361548859220E-07 -1.508941530043910E-07
S15 S16
K -8.834872000000000E-01 -6.285399300000000E+00
A3 9.820800000000000E-03 5.328640000000000E-02
A4 -7.358360000000000E-02 -5.860240000000000E-02
A5 -3.251000000000000E-03 8.639100000000000E-03
A6 1.219390000000000E-02 -1.440100000000000E-03
A7 -1.347000000000000E-03 2.054500000000000E-03
A8 -3.882000000000000E-04 -5.841000000000000E-04
A9 -6.252548600000000E-05 1.751848800000000E-05
A10 -2.679676400000000E-05 2.213117700000000E-05
A11 1.582728100000000E-05 -1.403615500000000E-05
A12 1.770422400000000E-05 -4.012046700000000E-06
A13 -2.572107800000000E-06 -1.182130000000000E-06
A14 -1.011506400000000E-06 4.302953300000000E-08
A15 0.000000000000000E+00 5.512435900000000E-07
A16 0.000000000000000E+00 3.627674100000000E-07
A17 0.000000000000000E+00 -9.826418100000000E-08
A18 0.000000000000000E+00 -3.229425600000000E-08
A19 0.000000000000000E+00 -1.594033800000000E-10
A20 0.000000000000000E+00 1.984375800000000E-09
Fig. 4 shows aberrations of the second example, and it is apparent from the aberration diagram of fig. 4 that the camera module 11 in the second example can satisfactorily correct various aberrations to obtain excellent optical performance, although it is small in size and wide in angle.
[ third example ] to provide a display device
Next, a third example of applying a specific numerical value to the camera module 11 shown in fig. 5 is explained. In the third example, similarly to the first example, the front group optical system 31 includes the first lens L1 and the second lens L2, the rear group optical system 32 includes the third to seventh lenses L3 to L7, and the aperture stop 4 is provided in the rear group optical system 32. Table 9 shows lens data of the third example, table 10 shows refractive powers of the lenses, and table 11 shows values of the focal length F, F-number Fno, angle of view 2 ω, total length, and composite focal length of the rear group optical system 32 of the entire system: fs, (r11+ r12)/(r11-r12), Σ d/f, and fs/f, and table 12 shows the values of the aspherical coefficients of the imaging lens 21.
TABLE 9
Si Ri Di Nd νd
1 (virtual surface) 1.00E+10
2(L1 first surface) 1.00E+18 0.8100 1.5168 64.17
3(L1 second surface) 1.4608 0.7000
4(L2 first surface) 7.4359 1.0442 1.6349 23.96
5(L2 second surface) -9.7263 0.7582
6 (aperture diaphragm) 1.00E+18 -0.0100
7(L3 first surface) 2.5840 0.7855 1.5432 56.00
8(L3 second surface) -1.5985 0.0500
9(L4 first surface) -6.8911 0.4000 1.6349 23.96
10(L4 second surface) 2.6658 0.1020
11(L5 first surface) 14.2870 0.8209 1.5432 56.00
12(L5 second surface) -3.4351 0.2458
13(L6 first surface) -2.2906 0.7666 1.5432 56.00
14(L6 second surface) -0.7168 0.0824
15(L7 first surface) 2.2625 0.3318 1.6349 23.96
16(L7 second surface) 0.7139 0.5468
17 (optical filter) 1.00E+18 0.2100 1.5168 64.17
18 (imaging surface) 0.3558
Watch 10
Lens and lens assembly Refractive power
L1 Negative pole
L2 Is just
L3 Is just
L4 Negative pole
L5 Is just
L6 Is just
L7 Negative pole
TABLE 11
f 1.7051
Fno 2.4503
2ω 139.9
Full length 8.0000
fs 2.2206
(r11+r12)/(r11-r12) 1.0000
Σd/f 4.6918
fs/f 1.3023
TABLE 12
S2 S3 S4
K 0.000000000000000E+00 -9.987051762007530E-01 4.199652943679350E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 0.000000000000000E+00 -6.775244006667290E-03 6.225363011475080E-03
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 0.000000000000000E+00 8.191482965943620E-03 1.218006643866610E-02
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 0.000000000000000E+00 2.546725802021560E-04 -3.056086050344570E-03
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 0.000000000000000E+00 -1.667558116032510E-05 7.082429216938740E-04
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0..000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S5 S7 S8
K 1.000000000000000E+01 1.884400737132740E+00 2.173566726400200E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 5.482480686933470E-02 1.513061547638730E-02 5.129993579371380E-02
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 1.800107728488830E-03 -9.092959531537660E-02 4.159214833536760E-03
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 -3.307790673938390E-04 1.560012776823340E-01 -4.467796588132900E-02
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 3.564209668342730E-03 -5.428872673855240E-01 -1.806756839662530E-01
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 1.622344000000000E-01
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S9 S10 S11
K 3.111473620099250E+01 -1.000000000000000E+01 -1.000000000000000E+01
A3 -1.474565283699130E-02 -3.820984136151940E-02 -3.063510403293590E-02
A4 -1.174832774742140E-01 -3.843794639326330E-02 -2.747090022535640E-02
A5 -1.050616519951570E-01 -6.947162129160420E-04 -7.543194263113860E-03
A6 9.221816378258350E-02 5.617034913669580E-02 7.935290493498800E-02
A7 8.239321861278590E-02 3.153051761555040E-02 -1.884426033238850E-02
A8 -1.272253841691310E-01 -6.446396824213750E-02 -3.722326689921730E-02
A9 -1.180500347012580E-01 -2.230516954755450E-02 -8.252928316009740E-03
A10 -6.535883062423920E-02 4.543085901118990E-02 2.954959491917840E-02
A11 -8.557199599632920E-02 0.000000000000000E+00 9.796516469956890E-04
A12 1.874481674338920E-01 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S12 S13 S14
K -1.000000000000790E+01 -1.000000000000000E+01 -4.362570161870050E+00
A3 1.864541606229270E-02 -3.063247347262900E-02 8.020560054324150E-03
A4 -1.599812211326580E-01 -9.267624930143530E-03 -1.096379662827960E-01
A5 4.618194548765310E-02 -1.204155787240050E-01 9.363461511404540E-02
A6 -1.371015517554340E-02 6.210635535376790E-02 1.917226448577780E-02
A7 -1.912972156193710E-02 2.176829004554870E-02 -1.550007872091320E-02
A8 1.487260539017920E-02 -1.763460955454930E-02 -7.088094437826010E-03
A9 1.760862664377530E-02 -1.423361871041640E-02 1.690298306652310E-04
A10 9.561918998001320E-03 5.277563471693940E-03 2.236621451919460E-04
A11 -5.985501202412620E-03 5.453117229392870E-03 6.750533921663290E-04
A12 -9.809611672113080E-03 -6.629504659024480E-04 7.324478351651410E-05
A13 -1.670901957220780E-02 -3.366150144373060E-05 3.143366651949920E-05
A14 1.068441007743250E-02 1.403910757306360E-05 -3.109707958197410E-06
A15 2.055083161927990E-02 6.888558300854190E-05 -9.716194861441510E-06
A16 -1.165712903791430E-02 7.658305888938510E-05 -7.701177463697320E-06
A17 0.000000000000000E+00 6.250165568064580E-05 -4.110999911275400E-06
A18 0.000000000000000E+00 3.867365584335990E-05 -1.729145059073790E-06
A19 0.000000000000000E+00 9.972338244125130E-06 2.187700273159080E-08
A20 0.000000000000000E+00 -5.753180121468890E-06 6.792280235990370E-07
S15 S16
K -8.834872000000000E-01 -6.285399300000000E+00
A3 9.820800000000000E-03 5.328640000000000E-02
A4 -7.358360000000000E-02 -5.860240000000000E-02
A5 -3.251000000000000E-03 8.639100000000000E-03
A6 1.219390000000000E-02 -1.440100000000000E-03
A7 -1.347000000000000E-03 2.054500000000000E-03
A8 -3.882000000000000E-04 -5.841000000000000E-04
A9 -6.252548600000000E-05 1.751848800000000E-05
A10 -2.679676400000000E-05 2.213117700000000E-05
A11 1.582728100000000E-05 -1.403615500000000E-05
A12 1.770422400000000E-05 -4.012046700000000E-06
A13 -2.572107800000000E-06 -1.182130000000000E-06
A14 -1.011506400000000E-06 4.302953300000000E-08
A15 0.000000000000000E+00 5.512435900000000E-07
A16 0.000000000000000E+00 3.627674100000000E-07
A17 0.000000000000000E+00 -9.826418100000000E-08
A18 0.000000000000000E+00 -3.229425600000000E-08
A19 0.000000000000000E+00 -1.594033800000000E-10
A20 0.000000000000000E+00 1.984375800000000E-09
Fig. 6 shows aberrations in the third embodiment, and as is apparent from the aberration diagram of fig. 6, the camera module 11 in the third example is capable of satisfactorily correcting various aberrations to obtain excellent optical performance despite its small size and wide angle.
[ fourth example ] to provide a display device
Next, a fourth example of applying a specific numerical value to the camera module 11 shown in fig. 7 is explained. In the fourth example, the lens configurations of the front group optical system 31 and the rear group optical system 32 are different from those of the first to third examples.
Specifically, in the fourth example, the front group optical system 31 includes, in order from the object side to the imaging surface S side: a first lens L1 having a negative refractive power and a concave surface facing the imaging surface S side, a second lens L2 having a negative refractive power and a concave surface facing the imaging surface S side, and a third lens L3 having a positive refractive power and a concave surface facing the object side and the imaging surface S side. The rear group optical system 32 includes, in order from the object side to the imaging surface S side: a fourth lens L4 having a positive refractive power with a convex surface facing the object side and the imaging surface S side, a fifth lens L5 having a negative refractive power with a concave surface facing the object side and the imaging surface S side, a sixth lens L6 having a negative refractive power, and a seventh lens L7 having a negative refractive power with a concave surface facing the imaging surface S side. In the rear group optical system 32, the aperture stop 4 is disposed on the imaging surface S side with respect to the vertex of the first surface of the fourth lens L4 and on the object side with respect to the second surface of the fourth lens L4.
Table 13 shows lens data of the fourth example, table 14 shows refractive powers of the lenses, and table 15 shows focal length F, F-number Fno, angle of view 2 ω, total length, and composite focal length of rear group optical system 32 of the entire system: fs, (r11+ r12)/(r11-r12), Σ d/f, and fs/f, and table 16 shows the values of the aspherical coefficients of the imaging lens 21.
Watch 13
Si Ri Di Nd νd
1 (virtual surface) 1.00E+10
2(L1 first surface) 1.30E+01 0.9 1.6230 58.12
3(L1 second surface) 2.6999 0.9000
4(L2 first surface) 14.3736 0.6857 1.4875 70.44
5(L2 second surface) 1.3000 1.2167
6(L3 first surface) 1.78E+00 0.81142 1.5339 56.20
7(L3 second surface) -3.2356 0.30904
8 (aperture diaphragm) 1.00E+18 -0.02000
9(L4 first surface) 3.2981 0.73671 1.5339 56.20
10(L4 second surface) -1.0766 0.02500
11(L5 first surface) -4.4521 0.31000 1.6349 23.96
12(L5 second surface) 1.5298 0.64434
13(L6 first surface) 0.4228 0.40000 1.5339 56.20
14(L6 second surface) 0.2390 0.02000
15(L7 first surface) 2.7389 0.43383 1.5339 56.20
16(L7 second surface) 2.2888 0.19702
17 (optical filter) 1.00E+18 0.11000 1.5168 64.20
18 (imaging surface) 0.52001
TABLE 14
Lens and lens assembly Refractive power
L1 Negative pole
L2 Negative pole
L3 Is just
L4 Is just
L5 Negative pole
L6 Negative pole
L7 Negative pole
Watch 15
f 1.2459
Fno 2.4641
2ω 162.3
Full length 8.1998
fs 14.7895
(r11+r12)/(r11-r12) 1.5242
∑d/f 6.5814
fs/f 11.8705
TABLE 16
S2 S3 S4
K 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S5 S6 S7
K 0.000000000000000E+00 -1.426481064242960E+00 2.095643952175020E-01
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 0.000000000000000E+00 -3.337807762826210E-02 -2.391996513233170E-02
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 0.000000000000000E+00 -3.737386170189720E-02 -1.423384822146510E-02
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 0.000000000000000E+00 -1.478213990929630E-03 -8.198738231112180E-04
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S9 S10 S11
K -5.691672939788710E-01 7.210931921912800E-01 9.142186923193580E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 2.065362247078310E-02 1.727867197121430E-01 -4.762506755360050E-01
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 -1.962622513023300E-01 -5.378791228539060E-01 -5.876572145765700E-02
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 5.265467778821660E-01 9.210164417228350E-01 -2.302874374257640E-01
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 -2.286588477863880E+00 -9.429417398754750E-01 -3.194843581301680E-01
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S12 S13 S14
K -1.006492142865310E+01 -1.540968466521260E+17 -1.079243904282780E+26
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 -5.945668779424970E-02 2.637651500025180E-02 1.338005000827000E-02
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 9.145971217176000E-02 -3.281330270372640E-03 -4.834522326318170E-03
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 -5.526303975745670E-02 2.077765534975260E-04 2.395452689482560E-03
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 2.101584828356210E-02 -6.414535996826710E-04 -7.806689841526270E-04
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S15 S16
K -7.095558900653710E-01 -6.263943977104570E+00
A3 0.000000000000000E+00 0.000000000000000E+00
A4 -9.257499482769730E-02 -4.578304703307770E-02
A5 0.000000000000000E+00 0.000000000000000E+00
A6 2.830589870653260E-02 1.051903083757810E-02
A7 0.000000000000000E+00 0.000000000000000E+00
A8 -6.144583013171090E-03 -1.750102812379610E-03
A9 0.000000000000000E+00 0.000000000000000E+00
A10 4.664394523847530E-04 9.076048657977360E-06
A11 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00
Aberration of the fourth example as shown in fig. 8, it is apparent from the aberration diagram of fig. 8 that the camera module 11 of the fourth example can satisfactorily correct various aberrations to obtain excellent optical performance although it is small in size and wide in angle.
[ fifth example ] A
Next, a fifth example of applying a specific numerical value to the camera module 11 shown in fig. 9 is explained. In the fifth example, the lens configurations of the front group optical system 31 and the rear group optical system 32 are different from those in the first to fourth examples.
Specifically, in the fifth example, the front group optical system 31 includes, in order from the object side to the imaging surface S side: a first lens L1 having a negative refractive power and a concave surface facing the imaging surface S side, a second lens L2 having a positive refractive power and a convex surface facing the imaging surface S side, and a third lens L3 having a positive refractive power and a convex surface facing the object side. The rear group optical system 32 includes, in order from the object side to the imaging surface 3 side: a fourth lens L4 having positive refractive power with its convex surface facing the object side and the imaging surface S side, a fifth lens L5 having negative refractive power with its concave surface facing the imaging surface S side, a sixth lens L6 having positive refractive power with its convex surface facing the imaging surface S side, and a seventh lens L7 having negative refractive power with its concave surface facing the imaging surface S side, in the rear group optical system 32, the aperture stop 4 is disposed on the imaging surface S side with respect to the vertex of the first surface of the fourth lens L4 and on the object side with respect to the second surface of the fourth lens L4.
Table 17 shows lens data of the fifth example, table 18 shows refractive powers of the lenses, and table 19 shows focal length F, F-number Fno, angle of view 2 ω, total length, and composite focal length of rear group optical system 32 of the entire system: fs, (r11+ r12)/(r11-r12), Σ d/f, and fs/f, and table 20 shows the values of the aspherical coefficients of the imaging lens 21.
TABLE 17
Si Ri Di Nd Vd
1 (virtual surface) 1.00E+10
2(L1 first surface) 25.0000 0.6000 1.6469 58.44
3(L1 second surface) 1.7562 1.7070
4(L2 first surface) -3.5331 1.4403 1.5343 55.66
5(L2 second surface) -1.9876 0.1199
6(L3 first surface) 2.1443 0.6038 1.6107 35.51
7(L3 second surface) 1.9526 0.4473
8 (aperture diaphragm) 1.00E+18 -0.0200
9(L4 first surface) 1.5751 0.6000 1.5343 55.66
10(L4 second surface) -1.5003 0.0300
11(L5 first surface) 68.2455 0.3000 1.6424 18.95
12(L5 second surface) 1.4505 0.2273
13(L6 first surface) 25.2715 0.5138 1.5343 55.66
14(L6 second surface) -1.8793 0.2516
15(L7 first surface) -5.1799 0.4500 1.5343 55.66
16(L7 second surface) 2.4773 0.0434
17 (optical filter) 1.00E+18 0.1100 1.5168 64.20
18 (imaging plane) 0.5779
Watch 18
Lens and lens assembly Refractive power
L1 Negative pole
L2 Is just
L3 Is just
L4 Is just
L5 Negative pole
L6 Is just
L7 Negative pole
Watch 19
f 1.3274
Fno 2.5055
2ω 164.6
Full length 8.0024
fs 2.5128
(r11+r12)/(r11-r12) 1.1511
∑d/f 6.0286
fs/f 1.8930
Watch 20
S2 S3 S4
K 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 0.000000000000000E+00 0.000000000000000E+00 -1.911043408074790E-02
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 0.000000000000000E+00 0.000000000000000E+00 6.119848829947400E-03
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 0.000000000000000E+00 0.000000000000000E+00 -1.728623233355910E-03
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S5 S6 S7
K 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 5.018413608393540E-02 -1.749565752561040E-02 -1.130559914396980E-01
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 -1.327355983745440E-02 2.458859868825680E-02 1.277357053695800E-01
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 2.714060486174280E-03 -1.405443087293290E-02 -3.143199794530790E-02
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S9 S10 S11
K 0.000000000000000E+00 0.000000000000000E+00 -1.000000000000000E+01
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 -9.847182575933280E-02 8.007026856081160E-02 -1.186845753543090E-01
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 -1.120214790674960E-01 -3.313977945585520E-01 1.809734538731670E-01
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 6.933037713097220E-02 1.532339906889390E-01 -4.157139774311170E-01
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 -8.375820067520630E-01 -5.111780101095970E-01 2.534340535635670E-01
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S12 S13 S14
K 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A3 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A4 -1.611873159257590E-01 6.371033184129980E-02 1.915881880537000E-01
A5 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A6 3.215614287338210E-01 -1.301603434609860E-01 -1.445621413949080E-02
A7 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A8 -2.527617780309280E-01 4.950043162395670E-02 -5.641575462317510E-03
A9 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A10 5.986192881508690E-02 -1.967146400724200E-02 -1.944289394893290E-03
A11 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00 0.000000000000000E+00
S15 S16
K 0.000000000000000E+00 0.000000000000000E+00
A3 -5.824960650456110E-02 -7.899577943179050E-02
A4 -9.597016896909940E-03 -1.691659667674190E-01
A5 3.229468096139420E-02 -9.811740028447620E-02
A6 -2.615380206094760E-01 3.058838003646320E-01
A7 8.349600652260650E-01 -1.296818505126680E-01
A8 -8.159327158937640E-01 -7.730890024776610E-02
A9 3.320662951480450E-01 7.384239136921180E-02
A10 -5.109416906142120E-02 -1.587416655503860E-02
A11 0.000000000000000E+00 0.000000000000000E+00
A12 0.000000000000000E+00 0.000000000000000E+00
A13 0.000000000000000E+00 0.000000000000000E+00
A14 0.000000000000000E+00 0.000000000000000E+00
A15 0.000000000000000E+00 0.000000000000000E+00
A16 0.000000000000000E+00 0.000000000000000E+00
A17 0.000000000000000E+00 0.000000000000000E+00
A18 0.000000000000000E+00 0.000000000000000E+00
A19 0.000000000000000E+00 0.000000000000000E+00
A20 0.000000000000000E+00 0.000000000000000E+00
Fig. 10 shows aberrations of the fifth example, and it is apparent from the aberration diagram of fig. 10 that the camera module 11 of the fifth example is capable of satisfactorily correcting various aberrations to obtain excellent optical performance despite a small size and a wide angle.
In the description of the embodiments of the present disclosure, it should be understood that terms such as "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" should be construed to refer to the direction or position as set forth or illustrated in the drawing under discussion. These relative terms are used only to simplify the description of the present disclosure and do not indicate or imply that the referenced devices or elements must have a particular orientation or must be constructed or operated in a particular orientation, and therefore, these terms should not be construed as limiting the present disclosure.
Furthermore, terms such as "first" and "second" are used herein for descriptive purposes and are not intended to indicate or imply relative importance or significance, or to imply a number of the indicated technical features. Thus, features defined as "first" and "second" may include one or more of the features. In the description of the present disclosure, "plurality" means "two or more than two" unless otherwise specified.
In the description of the embodiments of the present disclosure, unless specified or limited otherwise, the terms "mounted," "connected," "coupled," and the like are used broadly and can be, for example, a fixed connection, a detachable connection, or an integral connection; mechanical or electrical connections are also possible; or may be directly connected or indirectly connected through intervening structures; or an internal communication of the two elements as would be understood by one skilled in the art as the case may be.
In embodiments of the present disclosure, unless otherwise specified or limited, a structure in which a first feature is "on" or "under" a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature and the second feature are not in direct contact with each other but are in contact with an additional feature formed therebetween. Further, a first feature "over," "on" or "top" a second feature may include the following embodiments: a first feature is "over," "on" or "on top" of, orthogonal or oblique to, or simply means that the height of the first feature is higher than the height of the second feature; while a first feature "under", "beneath" or "bottom" a second feature may include the following embodiments: a first feature may be "below," "beneath," or "bottom" a second feature, either orthogonally or obliquely, or may simply mean that the height of the first feature is less than the height of the second feature.
Various embodiments and examples are provided in the above description to implement different configurations of the present disclosure. Certain elements and arrangements are described above to simplify the present disclosure. However, these elements and arrangements are merely exemplary and are not intended to limit the present disclosure. Moreover, reference numbers and/or reference letters may be repeated in different examples of the disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations. Further, examples of different processes and materials are provided in this disclosure. However, one skilled in the art will appreciate that other processes and/or materials may also be applied.
Reference throughout this specification to "one embodiment," "some embodiments," "an example embodiment," "one example," "one particular example," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. Thus, the appearances of the foregoing phrases or examples throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
Any processes or methods described in flow diagrams or otherwise described herein may be understood as including one or more modules, segments, or portions of code which execute executable instructions for implementing specific logical functions or steps in the processes, and the scope of the preferred embodiments of the present disclosure includes other implementations, it being understood by those skilled in the art that such functions may be implemented in a different order than illustrated or discussed, including in substantially the same order or in a reverse order.
The logic and/or steps shown in this disclosure in other forms or in flow charts, e.g., a sequence of specific executable instructions for implementing logical functions, may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, e.g., a computer-based system, processor-containing system, or other system that can obtain instructions from an instruction execution system, apparatus, or device that executes instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples of the computer readable medium include, but are not limited to: an electronic connection (electronic device) having one or more wires, a portable computer accessory (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Further, the computer readable medium may even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other suitable medium, then edited, decrypted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that various portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, also in another embodiment, the steps or methods may be implemented by one or a combination of the following techniques known in the art: a discrete logic circuit having logic gate circuits for realizing a logic function of a data signal, an application specific integrated circuit having appropriate combinational logic gate circuits, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), and the like.
It will be understood by those skilled in the art that all or part of the steps in the above-described exemplary methods of the present disclosure may be implemented by hardware associated with program instructions, which may be stored in a computer-readable storage medium, which when run on a computer includes one or more steps in method embodiments of the present disclosure.
In addition, each functional unit of the embodiments of the present disclosure may be integrated in one processing module, or these units may exist separately physically, or two or more units are integrated in one processing module. The integrated module can be realized in a hardware form, and can also be realized in a software functional module form. When the integration module is implemented in the form of a software functional module and sold or used as a separate product, the integration module may be stored in a computer-readable storage medium.
The storage medium may be a read-only memory, a magnetic disk, a CD, etc.
Although embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that these embodiments are illustrative and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made thereto without departing from the scope of the present disclosure.

Claims (10)

1. An imaging lens comprising:
a front group optical system disposed on the object side; and
a rear group optical system disposed on the imaging surface side, wherein,
the front group optical system includes at least one lens having a negative refractive power and at least one lens having a positive refractive power;
the rear group optical system includes an aperture stop and at least one lens having a negative refractive power;
the lens located closest to the object side in the front group optical system is a lens having a negative refractive power and serving as a lens protective filter, an
The lens located closest to the imaging surface side in the rear group optical system has an aspherical shape having an inflection point on the surface on the imaging surface side.
2. The imaging lens according to claim 1, wherein the imaging lens satisfies the following conditional expression:
0.5<(r11+r12)/(r11-r12)<2.5,
wherein r11 is a central radius of curvature of an object-side surface of the most object-side lens, and r12 is a central radius of curvature of an imaging-surface-side surface of the most object-side lens.
3. The imaging lens according to claim 1, wherein the imaging lens satisfies the following conditional expression:
∑d/f<8.0,
where Σ d is a distance on the optical axis from the apex of the object-side surface of the lens located closest to the object side to the imaging surface, and f is the focal length of the entire optical system.
4. The imaging lens according to claim 1, wherein the imaging lens satisfies the following conditional expression:
0.5<fs/f<13,
where fs is the composite focal length of the rear group optical system and f is the focal length of the entire optical system.
5. The imaging lens according to claim 1, wherein the lens located closest to the imaging surface side is a lens having a negative refractive power.
6. The imaging lens according to claim 1, wherein a surface of the lens located closest to an imaging surface side on the imaging surface side has a concave shape near an optical axis and a convex shape at a peripheral portion.
7. The imaging lens as claimed in claim 1, wherein an angle of view of the imaging lens is 100 degrees or more.
8. The imaging lens according to claim 1, wherein the lens located closest to the imaging surface side is made of plastic.
9. A camera module, comprising:
an imaging lens according to any one of claims 1 to 8; and
an image sensor including an imaging surface.
10. An imaging device comprising the camera module of claim 9.
CN201980101131.XA 2019-12-25 2019-12-25 Imaging lens, camera module, and imaging apparatus Pending CN114556181A (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI712816B (en) 2020-02-14 2020-12-11 大立光電股份有限公司 Imaging optical lens assembly, image capturing unit and electronic device
US11719911B2 (en) 2020-02-14 2023-08-08 Largan Precision Co., Ltd. Imaging optical lens assembly, image capturing unit and electronic device
TWI726734B (en) 2020-05-29 2021-05-01 大立光電股份有限公司 Image capturing lens assembly, imaging apparatus and electronic device

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106199922A (en) * 2016-07-13 2016-12-07 浙江舜宇光学有限公司 Seven chip wide-angle lens
CN106468815A (en) * 2016-07-05 2017-03-01 玉晶光电(厦门)有限公司 Optical imaging lens
CN107402436A (en) * 2016-05-20 2017-11-28 先进光电科技股份有限公司 Optical imaging system
CN207281377U (en) * 2017-10-25 2018-04-27 浙江舜宇光学有限公司 Optical imaging lens
US20180172963A1 (en) * 2016-12-15 2018-06-21 Samsung Electronics Co., Ltd. Optical lens assembly and electronic apparatus having the same
CN108279474A (en) * 2017-01-06 2018-07-13 先进光电科技股份有限公司 Optical imaging system
US20190049698A1 (en) * 2017-08-14 2019-02-14 Ability Enterprise Co., Ltd Optical lens
CN208506350U (en) * 2018-07-02 2019-02-15 浙江舜宇光学有限公司 Pick-up lens
CN109375351A (en) * 2018-12-26 2019-02-22 广东旭业光电科技股份有限公司 A kind of imaging lens system group and electronic equipment
CN208705559U (en) * 2018-08-02 2019-04-05 浙江舜宇光学有限公司 Optical imaging lens
CN110161656A (en) * 2019-05-31 2019-08-23 宁波永新光学股份有限公司 A kind of vehicle-mounted high-definition wide angle imaging system
CN110221397A (en) * 2018-03-02 2019-09-10 大立光电股份有限公司 Optical photography microscope group, image-taking device and electronic device
CN110244432A (en) * 2018-03-07 2019-09-17 大立光电股份有限公司 Optical imaging microscope group, image-taking device and electronic device
CN110333594A (en) * 2019-08-20 2019-10-15 浙江舜宇光学有限公司 Optical imaging lens
CN110412747A (en) * 2019-08-20 2019-11-05 浙江舜宇光学有限公司 Pick-up lens group
CN110515175A (en) * 2018-05-21 2019-11-29 大立光电股份有限公司 Camera optical camera lens, image-taking device and electronic device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106997085B (en) * 2016-01-22 2019-04-02 大立光电股份有限公司 Imaging system microscope group, image-taking device and electronic device
CN207123647U (en) * 2017-09-13 2018-03-20 浙江舜宇光学有限公司 Pick-up lens

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107402436A (en) * 2016-05-20 2017-11-28 先进光电科技股份有限公司 Optical imaging system
CN106468815A (en) * 2016-07-05 2017-03-01 玉晶光电(厦门)有限公司 Optical imaging lens
CN106199922A (en) * 2016-07-13 2016-12-07 浙江舜宇光学有限公司 Seven chip wide-angle lens
US20180172963A1 (en) * 2016-12-15 2018-06-21 Samsung Electronics Co., Ltd. Optical lens assembly and electronic apparatus having the same
CN108279474A (en) * 2017-01-06 2018-07-13 先进光电科技股份有限公司 Optical imaging system
US20190049698A1 (en) * 2017-08-14 2019-02-14 Ability Enterprise Co., Ltd Optical lens
CN207281377U (en) * 2017-10-25 2018-04-27 浙江舜宇光学有限公司 Optical imaging lens
CN110221397A (en) * 2018-03-02 2019-09-10 大立光电股份有限公司 Optical photography microscope group, image-taking device and electronic device
CN110244432A (en) * 2018-03-07 2019-09-17 大立光电股份有限公司 Optical imaging microscope group, image-taking device and electronic device
CN110515175A (en) * 2018-05-21 2019-11-29 大立光电股份有限公司 Camera optical camera lens, image-taking device and electronic device
CN208506350U (en) * 2018-07-02 2019-02-15 浙江舜宇光学有限公司 Pick-up lens
CN208705559U (en) * 2018-08-02 2019-04-05 浙江舜宇光学有限公司 Optical imaging lens
CN109375351A (en) * 2018-12-26 2019-02-22 广东旭业光电科技股份有限公司 A kind of imaging lens system group and electronic equipment
CN110161656A (en) * 2019-05-31 2019-08-23 宁波永新光学股份有限公司 A kind of vehicle-mounted high-definition wide angle imaging system
CN110333594A (en) * 2019-08-20 2019-10-15 浙江舜宇光学有限公司 Optical imaging lens
CN110412747A (en) * 2019-08-20 2019-11-05 浙江舜宇光学有限公司 Pick-up lens group

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