WO2023044854A1

WO2023044854A1 - Imaging lens assembly, camera module and imaging device

Info

Publication number: WO2023044854A1
Application number: PCT/CN2021/120661
Authority: WO
Inventors: Daigo Katsuragi
Original assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2023-03-30
Also published as: CN117693700A

Abstract

An imaging lens assembly (21) includes a mirror (31) rotatable about one end (31a), at least one lens having a positive refractive power, and at least one lens having a negative refractive power, wherein the mirror (31) tilts at a first angle (01) in a stored mirror state so that most of the incoming light incident on the mirror (31) is reflected in a direction deviate from the lenses (32), and tilts at a second angle (02) in a shooting state so that most of the incoming light incident on the mirror (31) is reflected towards the lenses (32) to form an optical path optically connecting the mirror (31) and the lenses (32), and the imaging lens assembly (21) is configured so that: BF/Yh<0.75, Mh x 2>7.0mm.

Description

IMAGING LENS ASSEMBLY, CAMERA MODULE AND IMAGING DEVICE

TECHNICAL FIELD

The present disclosure relates to an imaging lens assembly, a camera module, and an imaging device, and more specifically, to an imaging lens assembly, a camera module, and an imaging device that are small and enable good optical performance.

BACKGROUND

In recent years, portable imaging devices such as mobile phones and digital cameras are being widely used. With the recent miniaturization of imaging devices, the imaging lens assembly mounted on such imaging devices also requires downsizing. In order to meet such a demand for miniaturization, a conventional imaging lens assembly secures a long focal length of the imaging lens assembly within a restricted space by disposing a prism on an object side of a lens group.

However, in the conventional imaging lens assembly, the volume of the prism disposed in the imaging device is restricted by the thickness of the imaging device. Due to the restricted volume of the prism, it is difficult for the prism to secure a sufficient reflection area and take in a sufficient amount of light.

Therefore, it is difficult for the small imaging device having a long focal length to capture a bright image, which requires a sufficient amount of light, using an imaging lens assembly having a large aperture and a large image sensor.

SUMMARY

The present disclosure aims to solve at least one of the technical problems mentioned above. Accordingly, the present disclosure needs to provide an imaging lens assembly, a camera module, and an imaging device.

In accordance with the present disclosure, an imaging lens assembly includes:

a mirror rotatable about one end on an imaging surface side of the mirror;

at least one lens disposed on the imaging surface side of the mirror and having a positive refractive power; and

at least one lens disposed on the imaging surface side of the mirror and having a negative refractive power, wherein

the mirror is configured to tilt at a first angle with respect to an optical axis direction of the imaging lens assembly in a stored mirror state so that most of the incoming light incident on the mirror is reflected in a direction deviate from the lenses, and is configured to tilt at a second angle larger than the first angle with respect to the optical axis direction in a shooting state so that most of the incoming light incident on the mirror is reflected towards the lenses to form an optical path optically connecting the mirror and the lenses, and

the imaging lens assembly is configured so that:

BF /Yh < 0.75,

Mh x 2 > 7.0 mm,

where BF is a distance on an optical axis of the imaging lens assembly from a surface on the imaging surface side of a most imaging surface side disposed lens to an imaging surface, Yh is an image height, and Mh is an effective height of the mirror at an intersection of the optical axis and the mirror.

In one example, the imaging lens assembly may be further configured so that:

Yh /f <0.25,

where f is a focal length of the imaging lens assembly.

In one example, the imaging lens assembly may be further configured so that:

BF /f <0.2,

where f is a focal length of the imaging lens assembly.

In one example, the imaging lens assembly may be further configured so that:

Fno /Mh <1.3,

where Fno is an F number of the imaging lens assembly.

In one example, the imaging lens assembly may be further configured so that:

Yh /∑D <0.2,

where ∑D is a distance on the optical axis from the mirror to the imaging surface.

In one example, the imaging lens assembly may be further configured so that:

∑D /f <2.0,

where ∑D is a distance on the optical axis from the mirror to the imaging surface, and f is a focal length of the imaging lens assembly.

In one example, a most imaging surface side disposed lens may have a negative refractive power.

In one example, the lenses may include, in order from an object side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens having a negative refractive power.

In one example, the lenses may include, in order from an object side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power.

In one example, the lenses may include, in order from an object side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power.

In one example, the lenses may include, in order from an object side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, and a fifth lens having a negative refractive power.

In accordance with the present disclosure, a camera module includes:

the imaging lens assembly; and

an image sensor including an imaging surface perpendicular to the optical axis direction of the imaging lens assembly.

In one example, the camera module may further include an IR filter disposed between the imaging lens assembly and the image sensor.

In accordance with the present disclosure, an imaging device includes:

the camera module;

a housing for storing the imaging lens assembly, and

a driving mechanism rotationally driving the mirror about the one end of the mirror.

In one example, the mirror may be configured to be stored in the housing in the stored mirror state and may be configured so that the other end of the mirror protrudes from a surface of the housing in the shooting state.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other aspects and advantages of the embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the drawings, in which:

FIG. 1A is a diagram of a camera module according to the present disclosure illustrating an imaging lens assembly in a stored mirror state;

FIG. 1B is a diagram of the camera module according to the present disclosure illustrating the imaging lens assembly in a shooting state;

FIG. 2A is a diagram of an imaging device according to the present disclosure illustrating the imaging device in the stored mirror state;

FIG. 2B is a diagram of the imaging device according to the present disclosure illustrating the imaging device in the shooting state;

FIG. 3 is a diagram illustrating an example of a drive mechanism;

FIG. 4 is a configuration diagram of a camera module according to a first example of the present disclosure;

FIG. 5 is an aberration diagram of the camera module according to the first example of the present disclosure;

FIG. 6 is a configuration diagram of a camera module according to a second example of the present disclosure;

FIG. 7 is an aberration diagram of the camera module according to the second example of the present disclosure;

FIG. 8 is a configuration diagram of a camera module according to a third example of the present disclosure;

FIG. 9 is an aberration diagram of the camera module according to the third example of the present disclosure;

FIG. 10 is a configuration diagram of a camera module according to a fourth example of the present disclosure, and

FIG. 11 is an aberration diagram of the camera module according to the fourth example of the present disclosure.

DETAILED DESCRIPTION

Embodiments of the present disclosure will be described in detail and examples of the embodiments will be illustrated in the accompanying drawings. The same or similar elements and elements having same or similar functions are denoted by like reference numerals throughout the descriptions. The embodiments described herein with reference to the drawings are explanatory and aim to illustrate the present disclosure, but they shall not be construed to limit the present disclosure.

First, an outline of the present disclosure will be described. A camera module to which the present disclosure is applied is a camera module which has a compact construction with a movable (collapsible) mirror, and which improves a brightness of an image. Specifically, as shown in FIG. 1A and FIG. 1B, an imaging lens assembly 21 of a camera module 11 includes a mirror 31 and a plurality of lenses 32. The lenses 32 include at least one lens having a positive refractive power and at least one lens having a negative refractive power.

The mirror 31 is rotatable about one end 31a on an imaging surface S side of the mirror 31.

The lenses 32 are disposed on the imaging surface S side of the mirror 31.

In FIGS. 1A and 1B, the dash–dot line represents optical axis of the camera module 11 (hereinafter the same applies) . As shown in FIGS. 1A and 1B, the optical axis of the camera module 11 is perpendicular to the imaging surface S.

As shown in FIG. 1A, in a stored mirror state where the mirror 31 is entirely stored in a housing of the camera module 11, the mirror 31 is configured to tilt at a first angle θ1 with respect to an optical axis direction D1 of the imaging lens assembly 21 so that most of the incoming light incident on the mirror 31 is reflected in a direction deviate from the lenses 32. That is, a light incident on the mirror 31 from an object side in a state where the mirror 31 is tilted at the first angle θ1 is not properly reflected toward the lenses 32 side and is not properly imaged on the imaging surface S.

On the other hand, as shown in FIG. 1B, in a shooting state where a subject (object) is shot (recorded as an image) , the mirror 31 is configured to tilt at a second angle θ2 larger than the first angle θ1 with respect to the optical axis direction D1 so that most of the incoming light incident on the mirror 31 is reflected towards the lenses 32 to form an optical path optically connecting the mirror 31 and the lenses 32. That is, a light incident on the mirror 31 from an object side in a state where the mirror 31 is tilted at the second angle θ2 is properly reflected toward the lenses 32 side and is properly imaged on the imaging surface S.

More specifically, during a switching from the stored mirror state to the shooting state, the mirror 31 is configured to rotate about one end 31a toward the lenses 32 side until the mirror 31 is tilted at the second angle θ2.

During a switching from the shooting state to the stored mirror state, the mirror 31 is configured to rotate about one end 31a toward a side opposite to the lenses 32 until the mirror 31 is tilted at the first angle θ1.

As shown in FIG. 2A and FIG. 2B, the camera module 11 is housed in a housing 4 to form an imaging device. As shown in FIG. 2A and FIG. 2B, the lenses 32 are held in the barrel 26.

As shown in FIG. 2A, in the stored mirror state, the mirror 31 is entirely stored in the housing 4 together with a light-permeable cover plate 5 which covers the mirror 31 from the object side. In order to store the mirror 31 in the restricted space of the housing 4, the mirror 31 is tilted at the first angle θ1 with respect to the optical axis direction D1. From a viewpoint of suppressing the thickness T of the housing 4, the first angle θ1 is preferably less than 45°, for example.

As shown in FIG. 2B, the camera module 11 is switched from the stored mirror state to the shooting state when a predetermined user operation to switch from the stored mirror state to the shooting state is performed.

During the switching from the stored mirror state to the shooting state, the camera module 11 drives the mirror 31 and the cover plate 5 stored in the housing 4 in a direction protruding from a surface 4a of the housing 4 by using a drive mechanism 24. At this time, the drive mechanism 24 rotationally drives the mirror 31 until it is tilted at the second angle θ2 with respect to the optical axis direction D1. From a viewpoint of capturing a bright image while suppressing the thickness T of the housing 4, the second angle θ2 is preferably 45°. The second angle θ2 may be between 42° or more and 48° or less. In the shooting state, a part of the mirror 31 on the other end 31b side protrudes from the surface 4a of the housing 4.

The drive mechanism 24 may include an actuator such as a motor. For example, as shown in FIG. 3, the drive mechanism 24 may include a spring 241, a rotation restricting member 242, and a motor 243 such as a voice coil motor. The spring 241 applies to the mirror 31 an elastic force which rotates the mirror 31 in a clockwise direction D2. In the example shown in FIG. 3, the rotation restricting member 242 is a rod-shaped member extending from the lower surface of the upper wall portion 51 of the cover plate 5 toward the mirror 31 side. The rotation restricting member 242 restricts a rotation of the mirror 31 by abutting against the mirror 31. Motor 243 drives the cover plate 5 along a thickness direction D3 of the housing 4. Specifically, the motor 243 raises the cover plate 5 along the thickness direction D3, during the switching from the stored mirror state to the shooting state. As the cover plate 5 rises, the rotation restricting member 242 fixed to the cover plate 5 also rises. As the rotation restricting member 242 rises, the mirror 31 rotates in a clockwise direction D2 by the elastic force of the spring 241 until the mirror 31 is tilted at the second angle θ2.

The drive mechanism 24 may have a completely mechanical configuration that does not require electrical control, such as a spring and a cam.

On the other hand, the camera module 11 is switched from the shooting state to the stored mirror state when a predetermined user operation to switch from the shooting state to the stored mirror state is performed.

During the switching from the shooting state to the stored mirror state, the drive mechanism 24 retracts and stores the cover plate 5 and the mirror 31 in the housing 4. At this time, the drive mechanism 24 rotationally drives the mirror 31 until it is tilted at the first angle θ1 with respect to the optical axis direction D1. In the example shown in FIG. 3, the motor 243 lowers the cover plate 5 along the thickness direction D3 during the switching from the shooting state to the stored mirror state. As the cover plate 5 is lowered, the rotation restricting member 242 fixed to the cover plate 5 is also lowered. As the rotation restricting member 242 is lowered, the mirror 31 rotates in a counterclockwise direction D4 until the mirror 31 is tilted at the first angle θ1.

The camera module 11, to which the present disclosure is applied, is configured as shown in FIGS. 4, 6, 8 and 10, for example.

The camera module 11 includes an imaging lens assembly 21, an optical filter 22 and an image sensor 23. The imaging lens assembly 21 includes the mirror 31 and the lenses 32. The lenses 32 include at least one lens having a positive refractive power and at least one lens having a negative refractive power. The lenses 32 have large diameters adapted to a large-sized image sensor 23 and are designed to maintain its good optical performance.

The image sensor 23 is, for example, a solid-state image sensor such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device) . The image sensor 23 has the imaging surface S which is an imaging plane of the imaging lens assembly 21. The image sensor 23 receives incident light from the subject (object side) via the imaging lens assembly 21 and the optical filter 22, photoelectrically converts the light, and outputs an image data, obtained by photoelectric conversion of the light, to a subsequent stage. The optical filter 22 disposed between the imaging lens assembly 21 and the image sensor 23 may be, for example, an IR (infrared) filter which cuts infrared light from incident light.

The camera module 11, provided with the movable mirror 31 on the object side of the lenses 32 as described above, enables a reflection area of the mirror 31, which is a light capture area, to be larger than a reflection area of a conventional immovable prism while suppressing the thickness T of the housing 4.

Thus, it is possible for a small imaging device having a long focal length and a small thickness T to capture a bright image by using an imaging lens assembly 21 having a large diameter and a large imaging sensor 23 which are suited for the mirror 31 which has a large reflection area.

Above mentioned configurations of the camera module 11 may be selectively combined with the following configurations represented by formulas (1) to (7) .

The imaging lens assembly 21 can be miniaturized and its good optical performance can be maintained more effectively when the camera module 11 satisfies the following formulas (1) and (2) :

BF /Yh < 0.75 (1)

Mh x 2 > 7.0 mm (2)

In the formula (1) , BF is a back focus which is a distance on an optical axis of the imaging lens assembly 21 from a surface on the imaging surface S side of a most imaging surface S side disposed lens to the imaging surface S (hereinafter the same applies) . Yh is an image height which is a half-diagonal length of the imaging surface S (hereinafter the same applies) . In the formula (2) , Mh is an effective height of the mirror 31 at an intersection 31c (see FIG. 1B) of the optical axis and the mirror 31 (hereinafter the same applies) . As shown in FIG. 1B, the effective height of the mirror 31 is a height of a light L at the intersection 31c, the light L being reflected from the mirror 31 and incident on the lenses 32.

If the value of BF /Yh exceeds the upper limit value of the formula (1) , it is difficult to miniaturize the imaging lens assembly 21 and it is difficult to maintain the good optical performance.

If the value of 2Mh falls below the lower limit value of the formula (2) , the increase in the amount of light uptake by adopting the movable mirror 31 becomes insufficient.

The imaging lens assembly 21 can be miniaturized and its good optical performance can be maintained more effectively when the camera module 11 satisfies the following formula (3) :

Yh /f <0.25 (3)

In the formula (3) , f is a focal length of the imaging lens assembly 21 (hereinafter the same applies) .

If the value of Yh /f exceeds the upper limit value of the formula (3) , it is difficult to miniaturize the imaging lens assembly 21 and it is difficult to maintain the good optical performance.

The imaging lens assembly 21 can be miniaturized and its good optical performance can be maintained more effectively when the camera module 11 satisfies the following formula (4) :

BF /f <0.2 (4)

If the value of BF /f exceeds the upper limit value of the formula (4) , it is difficult to miniaturize the imaging lens assembly 21 and it is difficult to maintain the good optical performance.

The imaging lens assembly 21 can be miniaturized and its good optical performance can be maintained more effectively when the camera module 11 satisfies the following formula (5) :

Fno /Mh <1.3 (5)

In the formula (5) , Fno is an F number of the imaging lens assembly 21 (hereinafter the same applies) .

If the value of Fno /Mh exceeds the upper limit value of the formula (5) , it is difficult to miniaturize the imaging lens assembly 21 and it is difficult to maintain the good optical performance.

The imaging lens assembly 21 can be miniaturized and its good optical performance can be maintained more effectively when the camera module 11 satisfies the following formula (6) :

Yh /∑D <0.2 (6)

In the formula (6) , ∑D is a distance on the optical axis from the mirror 31 to the imaging surface S (hereinafter the same applies) . That is, Σd is a full length of the imaging lens assembly 21.

If the value of Yh /∑D exceeds the upper limit value of the formula (6) , it is difficult to miniaturize the imaging lens assembly 21 and it is difficult to maintain the good optical performance.

The imaging lens assembly 21 can be miniaturized and its good optical performance can be maintained more effectively when the camera module 11 satisfies the following formula (7) :

∑D /f <2.0 (7)

If the value of ∑D /f exceeds the upper limit value of the formula (7) , it is difficult to miniaturize the imaging lens assembly 21 and it is difficult to maintain the good optical performance.

The most imaging surface S side disposed lens may have a negative refractive power.

Furthermore, in view of lens forming, it is preferable that an aspheric lens in the imaging lens assembly 21, particularly an aspheric lens of aspheric shape having an inflection point, is formed of a plastic material. Regarding the lenses which constitute the imaging lens assembly 21, lenses having a size equal to or smaller than a specific size are preferably formed of a plastic material, and lenses larger than the specific size are preferably formed of a glass material. This is because it is difficult to form an aspheric lens or a relatively small lens using a material other than a plastic material.

Such a camera module 11 including the imaging lens assembly 21 can be used in compact digital devices (imaging devices) such as mobile phones, wearable cameras, and surveillance cameras.

Next, more specific examples to which the present disclosure is applied will be described. In the following examples, “Si” indicates the ordinal number of the i-th surface which sequentially increases from the object side toward the imaging surface S side. Optical elements of the corresponding surfaces are indicated by the corresponding surface number “Si” . Denotations of “first surface” or “1st surface” indicate a surface on the object side of the lens, and denotations of “second surface” or “2nd surface” indicate a surface on the imaging surface S side of the lens. “R” indicates the value of a central curvature radius (mm) of the surface. Regarding “R” , “E + i” indicates an exponential expression with a base of 10, i.e., "10 ⁱ" . For example, "1.00 E +18" indicates "1.00 × 10 ¹⁸" . Such an exponential expression is also applied to an aspheric coefficient described later. “Di” indicates a value of a distance on the optical axis between the i-th surface and the (i + 1) -th surface (mm) . “Ndi” indicates a value of a refractive index at d-line (wavelength 587.6 nm) of the material of the optical element having the i-th surface. “νdi” indicates a value of the Abbe number at d-line of the material of the optical element having the i-th surface.

The imaging lens assembly 21 used in the following examples includes lenses having aspheric surfaces. The aspheric shape of the lens is defined by the following formula (8) :

Z = C × h ² / {1 + (1 -K × C ² × h ²) ^1/2} + Σ An × h ⁿ (8)

(n = an integer greater than or equal to 3) .

In the formula (8) , Z is a depth of the aspheric surface, C is a paraxial curvature which is equal to 1 /R, h is a distance from the optical axis to a lens surface, K is a conic constant (second-order aspheric coefficient) , and An is an nth-order aspheric coefficient.

[First example]

A first example in which specific numerical values are applied to the camera module 11 shown in FIG. 4, will be described.

In the first example, the imaging lens assembly 21 includes, in order from the object side toward the imaging surface S side, a mirror 31, a first lens L1 having a positive refractive power with a convex surface facing the object side, a second lens L2 having a negative refractive power with a concave surface facing the object side, a third lens L3 having a positive refractive power with a convex surface facing the object side, and a fourth lens L4 having a negative refractive power with a concave surface facing the imaging surface S side. An aperture stop 33 is disposed between the second lens L2 and the third lens L3.

Table 1 shows lens data of the first example. The unit of length or distance shown in each of the following tables is mm. Table 2 shows a focal length of each lens. Table 3 shows the focal length f of the imaging lens assembly 21, the F number Fno, the angle of view 2ω, the full length of the imaging lens assembly 21 which is obtained when an object point is taken at infinity ΣD, the back focus BF, the effective height Mh of the mirror 31 and the image height Yh. Table 4 shows values corresponding to the conditional expressions. Table 5 shows the aspheric coefficients of the imaging lens assembly 21.

TABLE 1

Si	Ri	Di	Ndi	νdi
1 (Mirror)		3.500
2 (L1 1st Surface)	6.526	2.000	1.5439	56.07
3 (L1 2nd Surface)	-80.921	0.250
4 (L2 1st Surface)	-6.314	1.000	1.6349	23.97
5 (L2 2nd Surface)	-11.773	0.050
6 (Aperture Stop)		11.330
7 (L3 1st Surface)	4.742	2.000	1.5439	56.07
8 (L3 2nd Surface)	21.321	1.000
9 (L4 1st Surface)	-18.592	0.800	1.6349	23.97
10 (L4 2nd Surface)	6.647	1.000
11 (Optical Filter)		0.210	1.5168	64.17
12 (Optical Filter)		0.202
13 (Image Plane)

TABLE 2

Lens	Focal Length
L1	11.21
L2	-23.09
L3	10.77
L4	-7.62

TABLE 3

f	15.00
Fno	2.74
2ω	18.17
ΣD	23.34
BF	1.41
Mh	3.66
Yh	2.35

TABLE 4

BF/Yh<0.75	0.60
Mh×2>7.0mm	7.32
Yh/f <0.25	0.16
BF/f <0.2	0.09
Fno/Mh <1.3	0.75
Yh/ΣD<0.2	0.10
ΣD/f<2.0	1.56

TABLE 5

	S2 (L1 1st Surface)	S3 (L1 2nd Surface)	S4 (L2 1st Surface)
R	6.525501994	-80.92140306	-6.313563832
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	-1.561464468877150E-04	2.040821419317100E-04	6.657400225517260E-03
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	-3.018956836603460E-05	9.700757022170380E-05	7.649873566571300E-05
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	-1.095405828718410E-05	-1.304425147783240E-05	-1.690959940451090E-05
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	4.681938038039550E-08	-3.384274500203850E-06	6.662424918148170E-07
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-2.493034438615690E-08	2.106144375501220E-07	-4.330239717425400E-08
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 (L2 2nd Surface)	S7 (L3 1st Surface)	S8 (L3 2nd Surface)
R	-11.77258409	4.742398784	21.32122592
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	5.583345894658100E-03	5.360000000000000E-04	9.420000000000000E-04
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	3.725556295277710E-05	5.490000000000000E-06	-3.200000000000000E-05
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	-1.328194560413400E-05	8.570000000000000E-06	3.700000000000000E-05
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	3.135115862990780E-06	-1.770000000000000E-07	9.530000000000000E-08
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-1.699916004239420E-07	2.480000000000000E-08	1.590000000000000E-07
A13	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A14	0.000000000000000E+00	0.000000000000000E+00	-4.070000000000000E-08
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 (L4 1st Surface)	S10 (L4 2nd Surface)
R	-18.59161801	6.646730899
K	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00
A4	-1.330000000000000E-03	-1.570000000000000E-03
A5	0.000000000000000E+00	0.000000000000000E+00
A6	4.300000000000000E-04	2.800000000000000E-04
A7	0.000000000000000E+00	0.000000000000000E+00
A8	4.970000000000000E-05	2.560000000000000E-04
A9	0.000000000000000E+00	0.000000000000000E+00
A10	-4.070000000000000E-07	-5.330000000000000E-05
A11	0.000000000000000E+00	0.000000000000000E+00
A12	-1.130000000000000E-06	8.140000000000000E-06
A13	0.000000000000000E+00	0.000000000000000E+00
A14	3.490000000000000E-08	-4.510000000000000E-07
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

Aberrations in the first example are shown in FIG. 5. FIG. 5 shows, as examples of aberrations, spherical aberration, astigmatism (field curvature) and distortion. Each of these aberration diagrams shows aberrations with d-line (587.56 nm) as a reference wavelength. In the spherical aberration diagram, aberrations with respect to g-line (435.84 nm) and C-line (656.27 nm) are also shown. In the graph showing astigmatism, “S” indicates a value of aberration on a sagittal image surface and “T” indicates a value of aberration on a tangential image surface. “IMG HT” indicates an image height. The same applies to aberration diagrams in other examples.

As can be seen from the aberration diagrams in FIG. 5, it is clear that the camera module 11 in the first example can satisfactorily correct various aberrations to obtain superior optical performance despite being small in size.

[Second example]

Next, a second example in which specific numerical values are applied to the camera module 11 shown in FIG. 6, will be described.

As shown in FIG. 6, in the second example, the imaging lens assembly 21 further includes a fifth lens L5, which has a negative refractive power, in addition to the first to fourth lenses L1 to L4. Unlike the first example, in the second example, the third lens L3 has a negative refractive power and the fourth lens L4 has a positive refractive power.

The aperture stop 33 is disposed between the first lens L1 and the second lens L2.

The lens parameters corresponding to those in the first embodiment are shown in Tables 6 to 10.

TABLE 6

Si	Ri	Di	Ndi	νdi
1 (Mirror)		3.500
2 (L1 1st Surface)	11.754	1.285	1.5439	56.07
3 (L1 2nd Surface)	183.131	0.300
4 (Aperture Stop)		0.000
5 (L2 1st Surface)	32.868	0.862	1.6349	23.97
6 (L2 2nd Surface)	15.741	21.359
7 (L3 1st Surface)	-18.649	4.200	1.544	56.07
8 (L3 2nd Surface)	-16.960	0.859
9 (L4 1st Surface)	-8.702	4.200	1.544	56.07
10 (L4 2nd Surface)	43.701	0.179
11 (L5 1st Surface)	14.661	4.200	1.635	23.97
12 (L5 2nd Surface)	-11.794	0.800
13 (Optical Filter)		0.110	1.517	64.17
14 (Optical Filter)		0.103
15 (Image Plane)

TABLE 7

Lens	Focal Length
L1	23.06
L2	-48.53
L3	-3000.00
L4	13.75
L5	-9.70

TABLE 8

f	27.01
Fno	3.58
2ω	10.18
ΣD	41.96
BF	1.01
Mh	4.20
Yh	2.35

TABLE 9

BF/Yh<0.75	0.43
Mh×2>7.0mm	8.40
Yh/f <0.25	0.09
BF/f <0.2	0.04
Fno/Mh <1.3	0.85
Yh/ΣD<0.2	0.06
ΣD/f<2.0	1.55

TABLE 10

	S2 (L1 1st Surface)	S3 (L1 2nd Surface)	S5 (L2 1st Surface)
R	11.75371138	183.1313783	32.86760243
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	3.506306475575810E-05	8.572726225582210E-05	1.663400918261620E-05
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	5.423039287646360E-06	5.108073913547310E-06	-1.181979575354700E-07
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	-1.260157445765380E-07	-2.145732633400540E-07	2.638008055971190E-07
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	-1.426602171154710E-08	-3.897957451550920E-09	1.695357564692600E-09
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	9.169244117750140E-10	6.217529908661310E-10	-5.880355983715440E-10
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

	S6 (L2 2nd Surface)	S7 (L3 1st Surface)	S8 (L3 2nd Surface)
R	15.74148565	18.64896654	16.95974663
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	1.535882680990520E-05	-6.178710000000000E-05	1.039380000000000E-04
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	3.019506523251880E-06	-1.710000000000000E-06	5.420000000000000E-06
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	3.237612375092970E-08	2.710000000000000E-07	2.760000000000000E-07
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	1.618555392787230E-08	-1.360000000000000E-08	3.730000000000000E-08
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-1.035791394766260E-09	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 (L4 1st Surface)	S10 (L4 2nd Surface)	S11 (L5 1st Surface)
R	8.702493241	-43.70077847	-14.66066909
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	8.702620000000000E-05	5.255620000000000E-04	1.298914000000000E-03
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	4.310000000000000E-06	-8.246360000000000E-05	-7.230000000000000E-05
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	-2.070000000000000E-07	-4.150000000000000E-06	-6.080000000000000E-06
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	3.070000000000000E-08	5.550000000000000E-07	1.710000000000000E-06
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	4.590000000000000E-09	2.920000000000000E-07	9.800000000000000E-08
A13	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A14	0.000000000000000E+00	-2.720000000000000E-08	-1.920000000000000E-08
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 (L5 2nd Surface)
R	11.79359706
K	0.000000000000000E+00
A3	0.000000000000000E+00
A4	4.944170000000000E-04
A5	0.000000000000000E+00
A6	3.680000000000000E-05
A7	0.000000000000000E+00
A8	5.460000000000000E-05
A9	0.000000000000000E+00
A10	-2.100000000000000E-05
A11	0.000000000000000E+00
A12	4.170000000000000E-06
A13	0.000000000000000E+00
A14	-2.820000000000000E-07
A15	0.000000000000000E+00
A16	0.000000000000000E+00
A17	0.000000000000000E+00
A18	0.000000000000000E+00
A19	0.000000000000000E+00
A20	0.000000000000000E+00

Aberrations in the second example are shown in FIG. 7. According to the second example, by making the lens parameters different from those of the first example, the degree of freedom in designing the camera module 11 according to the present disclosure can be further increased while obtaining the same effects as in the first example.

[Third example]

Next, a third example in which specific numerical values are applied to the camera module 11 shown in FIG. 8, will be described.

As shown in FIG. 8, in the third example, the imaging lens assembly 21 includes first to fifth lenses L1 to L5. The fifth lens L5 has a negative refractive power. Unlike the first example, the fourth lens L4 of the third example has a positive refractive power. The aperture stop 33 is disposed between the first lens L1 and the second lens L2.

The lens parameters corresponding to those in the first embodiment are shown in Tables 11 to 15.

TABLE 11

Si	Ri	Di	Ndi	νdi
1 (Mirror)		4.000
2 (L1 1st Surface)	19.870	2.000	1.5439	56.07
3 (L1 2nd Surface)	-12.401	0.050
4 (Aperture Stop)		0.500
5 (L2 1st Surface)	152.632	0.750	1.6349	23.97
6 (L2 2nd Surface)	16.227	15.032
7 (L3 1st Surface)	6.997	2.500	1.544	56.07
8 (L3 2nd Surface)	31.986	0.100
9 (L4 1st Surface)	170.435	1.642	1.544	56.07
10 (L4 2nd Surface)	-14.140	0.500
11 (L5 1st Surface)	-16.523	1.500	1.635	23.97
12 (L5 2nd Surface)	5.185	0.800
13 (Optical Filter)		0.110	1.517	64.17
14 (Optical Filter)		0.103
15 (Image Plane)

TABLE 12

Lens	Focal Length
L1	14.37
L2	-28.66
L3	15.93
L4	24.11
L5	-6.05

TABLE 13

f	18.30
Fno	2.90
2ω	14.21
ΣD	29.59
BF	1.01
Mh	3.92
Yh	2.35

TABLE 14

BF/Yh<0.75	0.43
Mh×2>7.0mm	7.84
Yh/f <0.25	0.13
BF/f <0.2	0.06
Fno/Mh <1.3	0.74
Yh/ΣD<0.2	0.08
ΣD/f<2.0	1.62

TABLE 15

	S2 (L1 1st Surface)	S3 (L1 2nd Surface)	S5 (L2 1st Surface)
R	19.87043846	-12.40095237	152.6318451
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	1.079827255814100E-03	1.845776012550320E-03	-5.304995116959330E-03
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	-1.477707843995470E-05	-2.638936666019780E-04	-1.979913155529830E-04
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	3.590062270500460E-06	2.169793436112630E-05	2.114179555398270E-05
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	-1.406391271014990E-07	-4.582828013536710E-07	5.782782627131710E-07
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	1.639217977577850E-08	6.564009706070900E-09	-9.242846521050940E-08
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

	S6 (L2 2nd Surface)	S7 (L3 1st Surface)	S8 (L3 2nd Surface)
R	16.22710657	6.996888019	31.98563547
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	-6.533273091001680E-03	-9.408250000000000E-05	-9.714370000000000E-04
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	1.269300815580570E-04	-5.550120000000000E-05	-6.405270000000000E-05
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	6.191661984148620E-06	-3.450000000000000E-07	1.900000000000000E-06
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	-2.325027983512030E-07	-6.280000000000000E-07	-8.260000000000000E-07
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-1.332631748926480E-08	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 (L4 1st Surface)	S10 (L4 2nd Surface)	S11 (L5 1st Surface)
R	170.4354332	-14.14044333	-16.52339206
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	1.530323000000000E-03	4.767856000000000E-03	-6.953134000000000E-03
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	1.407600000000000E-04	-2.500730000000000E-04	-4.398090000000000E-05
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	6.550000000000000E-06	3.484870000000000E-05	1.764830000000000E-05
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	1.630000000000000E-06	3.260000000000000E-06	-3.770000000000000E-07
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-7.110000000000000E-08	-5.630000000000000E-07	-6.180000000000000E-07
A13	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A14	0.000000000000000E+00	3.650000000000000E-08	-8.930000000000000E-09
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 (L5 2nd Surface)
R	5.184718273
K	0.000000000000000E+00
A3	0.000000000000000E+00
A4	-1.029411900000000E-02
A5	0.000000000000000E+00
A6	5.415210000000000E-04
A7	0.000000000000000E+00
A8	4.194880000000000E-05
A9	0.000000000000000E+00
A10	-2.050270000000000E-05
A11	0.000000000000000E+00
A12	2.980000000000000E-06
A13	0.000000000000000E+00
A14	-1.770000000000000E-07
A15	0.000000000000000E+00
A16	0.000000000000000E+00
A17	0.000000000000000E+00
A18	0.000000000000000E+00
A19	0.000000000000000E+00
A20	0.000000000000000E+00

Aberrations in the third example are shown in FIG. 9. According to the third example, by making the lens parameters different from those of the first and second examples, the degree of freedom in designing the camera module 11 according to the present disclosure can be further increased while obtaining the same effects as in the first example.

[Fourth example]

Next, a fourth example in which specific numerical values are applied to the camera module 11 shown in FIG. 10, will be described.

As shown in FIG. 10, in the fourth example, the imaging lens assembly 21 includes first to fifth lenses L1 to L5. The fifth lens L5 has a negative refractive power. The aperture stop 33 is disposed between the first lens L1 and the second lens L2.

The lens parameters corresponding to those in the first embodiment are shown in Tables 16 to 20.

TABLE 16

Si	Ri	Di	Ndi	νdi
1 (Mirror)		4.000
2 (L1 1st Surface)	19.870	2.000	1.5439	56.07
3 (L1 2nd Surface)	-12.401	0.050
4 (Aperture Stop)		0.500
5 (L2 1st Surface)	152.632	0.750	1.6349	23.97
6 (L2 2nd Surface)	16.227	15.836
7 (L3 1st Surface)	12.205	2.225	1.544	56.07
8 (L3 2nd Surface)	-6.738	0.383
9 (L4 1st Surface)	-5.373	2.076	1.544	56.07
10 (L4 2nd Surface)	18.904	1.042
11 (L5 1st Surface)	-6.205	1.150	1.635	23.97
12 (L5 2nd Surface)	-10.138	0.800
13 (Optical Filter)		0.110	1.517	64.17
14 (Optical Filter)		0.103
15 (Image Plane)

TABLE 17

Lens	Focal Length
L1	14.37
L2	-28.66
L3	8.34
L4	-7.48
L5	-28.42

TABLE 18

f	24.00
Fno	3.80
2ω	11.61
ΣD	31.03
BF	1.01
Mh	3.77
Yh	2.35

TABLE 19

BF/Yh<0.75	0.43
Mh×2>7.0mm	7.54
Yh/f <0.25	0.10
BF/f <0.2	0.04
Fno/Mh <1.3	1.01
Yh/ΣD<0.2	0.08
ΣD/f<2.0	1.29

TABLE 20

	S6 (L2 2nd Surface)	S7 (L3 1st Surface)	S8 (L3 2nd Surface)
R	16.22710657	12.20491162	-6.738303851
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	-6.533273091001680E-03	1.893311000000000E-03	4.461684000000000E-03
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	1.269300815580570E-04	1.466360000000000E-04	9.844380000000000E-05
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	6.191661984148620E-06	5.080000000000000E-07	-5.280000000000000E-06
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	-2.325027983512030E-07	-1.290000000000000E-06	-1.090000000000000E-06
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-1.332631748926480E-08	8.970000000000000E-08	3.830000000000000E-08
A13	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A14	0.000000000000000E+00	8.960000000000000E-09	2.880000000000000E-09
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 (L4 1st Surface)	S10 (L4 2nd Surface)	S11 (L5 1st Surface)
R	-5.372616681	18.90377383	-6.205163499
K	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A3	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A4	-4.224466000000000E-03	-9.530383000000000E-03	5.759056000000000E-03
A5	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A6	-6.770000000000000E-06	-3.570320000000000E-04	-4.422080000000000E-04
A7	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A8	2.606830000000000E-05	5.941080000000000E-05	-7.649710000000000E-05
A9	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A10	4.240000000000000E-06	5.500000000000000E-06	-7.830000000000000E-06
A11	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A12	-4.680000000000000E-08	-7.610000000000000E-07	3.760000000000000E-07
A13	0.000000000000000E+00	0.000000000000000E+00	0.000000000000000E+00
A14	-7.460000000000000E-08	8.960000000000000E-08	3.620000000000000E-07
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 (L5 2nd Surface)
R	-10.13758595
K	0.000000000000000E+00
A3	0.000000000000000E+00
A4	-1.652844000000000E-03
A5	0.000000000000000E+00
A6	1.454367000000000E-03
A7	0.000000000000000E+00
A8	-8.162300000000000E-05
A9	0.000000000000000E+00
A10	-3.931980000000000E-05
A11	0.000000000000000E+00
A12	3.000000000000000E-06
A13	0.000000000000000E+00
A14	1.470000000000000E-07
A15	0.000000000000000E+00
A16	0.000000000000000E+00
A17	0.000000000000000E+00
A18	0.000000000000000E+00
A19	0.000000000000000E+00
A20	0.000000000000000E+00

Aberrations in the fourth example are shown in FIG. 11. According to the fourth example, by making the lens parameters different from those of the first to third examples, the degree of freedom in designing the camera module 11 according to the present disclosure can be further increased while obtaining the same effects as in the first example.

In the description of embodiments of the present disclosure, it is to be understood that terms such as "central" , "longitudinal" , "transverse" , "length" , "width" , "thickness" , "upper" , "lower" , "front" , "rear" , "back" , "left" , "right" , "vertical" , "horizontal" , "top" , "bottom" , "inner" , "outer" , "clockwise" and "counterclockwise" should be construed to refer to the orientation or the position as described or as shown in the drawings in discussion. These relative terms are only used to simplify the description of the present disclosure, and do not indicate or imply that the device or element referred to must have a particular orientation, or must be constructed or operated in a particular orientation. Thus, these terms cannot be constructed to limit the present disclosure.

In addition, terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features. Thus, a feature defined as "first" and "second" may comprise one or more of this feature. In the description of the present disclosure, "a plurality of" means “two or more than two” , unless otherwise specified.

In the description of embodiments of the present disclosure, unless specified or limited otherwise, the terms "mounted" , "connected" , "coupled" and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications of two elements which can be understood by those skilled in the art according to specific situations.

In the embodiments of the present disclosure, unless specified or limited otherwise, a structure in which a first feature is "on" or "below" 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 via an additional feature formed therebetween. Furthermore, a first feature "on" , "above" or "on top of" a second feature may include an embodiment in which the first feature is orthogonally or obliquely "on" , "above" or "on top of" the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature "below" , "under" or "on bottom of" a second feature may include an embodiment in which the first feature is orthogonally or obliquely "below" , "under" or "on bottom of" the second feature, or just means that the first feature is at a height lower than that of the second feature.

Various embodiments and examples are provided in the above description to implement different structures of the present disclosure. In order to simplify the present disclosure, certain elements and settings are described in the above. However, these elements and settings are only by way of example and are not intended to limit the present disclosure. In addition, reference numbers and/or reference letters may be repeated in different examples in the present disclosure. This repetition is for the purpose of simplification and clarity and does not refer to relations between different embodiments and/or settings. Furthermore, examples of different processes and materials are provided in the present disclosure. However, it would be appreciated by those skilled in the art that other processes and/or materials may also be applied.

Reference throughout this specification to "an embodiment" , "some embodiments" , "an exemplary embodiment" , "an example" , "a specific example" or "some examples" means that a particular feature, structure, material, or characteristics 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 above phrases 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 process or method described in a flow chart or described herein in other ways may be understood to include one or more modules, segments or portions of codes of executable instructions for achieving specific logical functions or steps in the process, and the scope of a preferred embodiment of the present disclosure includes other implementations, in which it should be understood by those skilled in the art that functions may be implemented in a sequence other than the sequences shown or discussed, including in a substantially identical sequence or in an opposite sequence.

The logic and/or step described in other manners herein or shown in the flow chart, for example, a particular sequence table of executable instructions for realizing the logical function, may be specifically achieved in any computer readable medium to be used by the instructions execution system, device or equipment (such as a system based on computers, a system comprising processors or other systems capable of obtaining instructions from the instructions execution system, device and equipment executing the instructions) , or to be used in combination with the instructions execution system, device and equipment. As to the specification, "the computer readable medium" may be any device adaptive for including, storing, communicating, propagating or transferring programs to be used by or in combination with the instruction execution system, device or equipment. More specific examples of the computer readable medium comprise but are not limited to: an electronic connection (an electronic device) with one or more wires, a portable computer enclosure (a magnetic device) , a random access memory (RAM) , a read only memory (ROM) , an erasable programmable read-only memory (EPROM or a flash memory) , an optical fiber device and a portable compact disk read-only memory (CDROM) . In addition, the computer readable medium may even be a paper or other appropriate medium capable of printing programs thereon, this is because, for example, the paper or other appropriate medium may be optically scanned and then edited, decrypted or processed with other appropriate methods when necessary to obtain the programs in an electric manner, and then the programs may be stored in the computer memories.

It should be understood that each part of the present disclosure may be realized by the hardware, software, firmware or their combination. In the above embodiments, a plurality of steps or methods may be realized by the software or firmware stored in the memory and executed by the appropriate instructions execution system. For example, if it is realized by the hardware, likewise in another embodiment, the steps or methods may be realized by one or a combination of the following techniques known in the art: a discrete logic circuit having a logic gate circuit for realizing a logic function of a data signal, an application-specific integrated circuit having an appropriate combination logic gate circuit, a programmable gate array (PGA) , a field programmable gate array (FPGA) , etc.

Those skilled in the art shall understand that all or parts of the steps in the above exemplifying method of the present disclosure may be achieved by commanding the related hardware with programs. The programs may be stored in a computer readable storage medium, and the programs comprise one or a combination of the steps in the method embodiments of the present disclosure when run on a computer.

In addition, each function cell of the embodiments of the present disclosure may be integrated in a processing module, or these cells may be separate physical existence, or two or more cells are integrated in a processing module. The integrated module may be realized in a form of hardware or in a form of software function modules. When the integrated module is realized in a form of software function module and is sold or used as a standalone product, the integrated module may be stored in a computer readable storage medium.

The storage medium mentioned above may be read-only memories, magnetic disks, CD, etc.

Although embodiments of the present disclosure have been shown and described, it should be appreciated by those skilled in the art that the embodiments are explanatory and cannot be construed to limit the present disclosure, and changes, modifications, alternatives and variations can be made in the embodiments without departing from the scope of the present disclosure.

Claims

An imaging lens assembly, comprising:

a mirror rotatable about one end on an imaging surface side of the mirror;

at least one lens disposed on the imaging surface side of the mirror and having a positive refractive power; and

at least one lens disposed on the imaging surface side of the mirror and having a negative refractive power, wherein

the mirror is configured to tilt at a first angle with respect to an optical axis direction of the imaging lens assembly in a stored mirror state so that most of the incoming light incident on the mirror is reflected in a direction deviate from the lenses, and is configured to tilt at a second angle larger than the first angle with respect to the optical axis direction in a shooting state so that most of the incoming light incident on the mirror is reflected towards the lenses to form an optical path optically connecting the mirror and the lenses, and

the imaging lens assembly is configured so that:

BF /Yh < 0.75,

Mh x 2 > 7.0 mm,

where BF is a distance on an optical axis of the imaging lens assembly from a surface on the imaging surface side of a most imaging surface side disposed lens to an imaging surface, Yh is an image height, and Mh is an effective height of the mirror at an intersection of the optical axis and the mirror.
The imaging lens assembly according to claim 1, further configured so that:

Yh /f <0.25,

where f is a focal length of the imaging lens assembly.
The imaging lens assembly according to claim 1, further configured so that:

BF /f <0.2,

where f is a focal length of the imaging lens assembly.
The imaging lens assembly according to claim 1, further configured so that:

Fno /Mh <1.3,

where Fno is an F number of the imaging lens assembly.
The imaging lens assembly according to claim 1, further configured so that:

Yh /∑D <0.2,

where ∑D is a distance on the optical axis from the mirror to the imaging surface.
The imaging lens assembly according to claim 1, further configured so that:

∑D /f <2.0,

where ∑D is a distance on the optical axis from the mirror to the imaging surface, and f is a focal length of the imaging lens assembly.
The imaging lens assembly according to claim 1, wherein

a most imaging surface side disposed lens has a negative refractive power.
The imaging lens assembly according to claim 1, wherein

the lenses comprise, in order from an object side,

a first lens having a positive refractive power,

a second lens having a negative refractive power,

a third lens having a positive refractive power, and

a fourth lens having a negative refractive power.
The imaging lens assembly according to claim 1, wherein

the lenses comprise, in order from an object side,

a first lens having a positive refractive power,

a second lens having a negative refractive power,

a third lens having a negative refractive power,

a fourth lens having a positive refractive power, and

a fifth lens having a negative refractive power.
The imaging lens assembly according to claim 1, wherein

the lenses comprise, in order from an object side,

a first lens having a positive refractive power,

a second lens having a negative refractive power,

a third lens having a positive refractive power,

a fourth lens having a positive refractive power, and

a fifth lens having a negative refractive power.
The imaging lens assembly according to claim 1, wherein

the lenses comprise, in order from an object side,

a first lens having a positive refractive power,

a second lens having a negative refractive power,

a third lens having a positive refractive power,

a fourth lens having a negative refractive power, and

a fifth lens having a negative refractive power.
A camera module, comprising:

an imaging lens assembly according to any one of claims 1-11; and

an image sensor comprising an imaging surface perpendicular to the optical axis direction of the imaging lens assembly.
The camera module according to claim 12, further comprising an IR filter disposed between the imaging lens assembly and the image sensor.
An imaging device, comprising:

a camera module according to claim 12 or 13;

a housing for storing the imaging lens assembly; and

a driving mechanism rotationally driving the mirror about the one end of the mirror.
The imaging device according to claim 14, wherein

the mirror is configured to be stored in the housing in the stored mirror state and is configured so that the other end of the mirror protrudes from a surface of the housing in the shooting state.