Optical imaging lens, image capturing device and electronic device

Abstract

The invention provides an optical imaging lens, an image capturing device and an electronic device, and the optical imaging lens comprises five lenses which are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical path. The five lens bodies are each provided with an object side face facing the object side and an image side face facing the image side, the image side face, close to the optical axis, of the first lens body is a concave face, the object side face, close to the optical axis, of the fourth lens body is a convex face, and the object side face, close to the optical axis, of the fifth lens body is a concave face. At least one of the object side surface and the image side surface of at least one of the five lenses has at least one inflection point at an off-axis position, and the aperture value of the optical imaging lens is Fno which meets the relational expression: 1.5 lt; f < not >; 2.0.

Description

Technical Field

[0001] The present disclosure relates to an optical imaging lens and an image capturing device, and more particularly to an optical imaging lens and an image capturing device applicable to electronic devices. Background Art

[0002] As semiconductor process technology becomes more advanced, the performance of electronic photosensitive elements has been improved, and pixels can reach smaller sizes. Therefore, optical lenses with high imaging quality have become an indispensable part.

[0003] As technology advances with each passing day, the application scope of electronic devices equipped with optical lenses has become wider, and the requirements for optical lenses have also become more diverse. Since it is difficult for optical lenses in the past to strike a balance between requirements such as imaging quality, sensitivity, aperture size, volume or viewing angle, the present disclosure provides an optical lens to meet the requirements. Summary of the invention

[0004] The present disclosure provides an optical imaging lens, comprising five lenses, wherein the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, and a fifth lens from an object side to an image side along an optical path, and the five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction;

[0005] Preferably, the first lens has negative refractive power, the image side surface of the first lens is concave at the near optical axis, the object side surface of the second lens is convex at the near optical axis, the image side surface of the third lens is concave at the near optical axis, the object side surface of the fourth lens is convex at the near optical axis, the object side surface of the fifth lens is concave at the near optical axis, and at least one of the five lenses has at least one inflection point at an off-axis position between the object side surface and the image side surface; preferably, the aperture value of the optical imaging lens is Fno, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship:

[0006] 1.5 <Fno<2.0;

[0007] 1.8<(V2+V4) / (V3+V5)<4.0; and

[0008] 0.25 <CT4 / T45<5.5。

[0009] The present disclosure provides an image capturing device, comprising the aforementioned optical imaging lens and an electronic photosensitive element.

[0010] The present disclosure provides an electronic device including the aforementioned imaging device.

[0011] The present disclosure provides an optical imaging lens, comprising five lenses, wherein the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, and a fifth lens from an object side to an image side along an optical path, and the five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction;

[0012] Preferably, the first lens has negative refractive power, the image side surface of the first lens is concave at the near optical axis, the image side surface of the third lens is concave at the near optical axis, the object side surface of the fourth lens is convex at the near optical axis, the object side surface of the fifth lens is concave at the near optical axis, and at least one of the five lenses has at least one inflection point at an off-axis position between the object side surface and the image side surface; preferably, the aperture value of the optical imaging lens is Fno, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship:

[0013] 1.5 <Fno<2.0;

[0014] 1.8<(V2+V4) / (V3+V5)<4.0; and

[0015] 1.1<(CT4+CT5) / T45<7.3.

[0016] The present disclosure provides an optical imaging lens, comprising five lenses, wherein the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens, and a fifth lens from an object side to an image side along an optical path, and the five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction;

[0017] Preferably, the image side surface of the first lens is concave at the near optical axis, the second lens has positive refractive power, the object side surface of the second lens is convex at the near optical axis, the third lens has negative refractive power, the object side surface of the fourth lens is convex at the near optical axis, the object side surface of the fifth lens is concave at the near optical axis, and at least one of the five lenses has at least one inflection point at an off-axis position between the object side surface and the image side surface; preferably, the aperture value of the optical imaging lens is Fno, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship:

[0018] 1.5 < Fno < 2.0;

[0019] 1.5 < V4 / V5 < 4.0; and

[0020] 0.65 < CT4 / T45 < 4.3.

[0021] When Fno meets the condition, a balance can be achieved between illuminance and depth of field.

[0022] When (V2 + V4) / (V3 + V5) meets the condition, the material configuration can be adjusted to correct aberrations such as chromatic aberration.

[0023] When CT4 / T45 meets the condition, the fourth lens and the fifth lens can cooperate with each other, which helps to adjust the volume distribution at the image side end of the optical imaging lens.

[0024] When (CT4 + CT5) / T45 meets the condition, the fourth lens and the fifth lens can cooperate with each other, which helps to adjust the volume distribution at the image side end of the optical imaging lens.

[0025] When V4 / V5 meets the condition, the fourth lens and the fifth lens can cooperate with each other to correct aberrations such as chromatic aberration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A is a schematic diagram of the imaging device according to the first embodiment of the present disclosure.

[0027] Figure 1B is the aberration curve diagram of the first embodiment of the present disclosure.

[0028] Figure 2A is a schematic diagram of the imaging device according to the second embodiment of the present disclosure.

[0029] Figure 2B is the aberration curve diagram of the second embodiment of the present disclosure.

[0030] Figure 3A is a schematic diagram of the imaging device according to the third embodiment of the present disclosure.

[0031] Figure 3B is the aberration curve diagram of the third embodiment of the present disclosure.

[0032] Figure 4A is a schematic diagram of the imaging device according to the fourth embodiment of the present disclosure.

[0033] Figure 4B is the aberration curve diagram of the fourth embodiment of the present disclosure.

[0034] Figure 5A is a schematic diagram of the imaging device according to the fifth embodiment of the present disclosure.

[0035] Figure 5B It is an aberration curve diagram of the fifth embodiment of the present disclosure.

[0036] Fig. 6A It is a schematic diagram of an imaging device according to a sixth embodiment of the present disclosure.

[0037] Figure 6B It is an aberration curve diagram of the sixth embodiment of the present disclosure.

[0038] Fig. 7A It is a schematic diagram of an imaging device according to the seventh embodiment of the present disclosure.

[0039] Figure 7B It is an aberration curve diagram of the seventh embodiment of the present disclosure.

[0040] Figure 8 The first embodiment of the present disclosure is used as an example to illustrate some parameters of the optical imaging lens, the inflection point on the lens surface, and the convex critical point on the image-side surface of the third lens.

[0041] Fig. 9 It is a three-dimensional schematic diagram of an imaging device according to an eighth embodiment of the present disclosure.

[0042] Fig. 10A FIG. 4 is a front view of an electronic device according to a ninth embodiment of the present disclosure.

[0043] Fig. 10B FIG. 4 is a rear view of the electronic device according to the ninth embodiment of the present disclosure.

[0044] Fig.11 FIG. 1 is a rear view of the electronic device according to the tenth embodiment of the present disclosure.

[0045] Fig.12 FIG. 1 is a rear view of the electronic device according to the eleventh embodiment of the present disclosure.

[0046] Reference numerals:

[0047] Image capturing device 1, 2, 3, 4, 5, 6, 7, 100, 201, 202, 203, 204, 205, 304, 305, 306, 404a, 404b, 405a, 405b, 406a, 406b, 407a, 407b, 408

[0048] First lens E1

[0049] Second lens E2

[0050] The third lens E3

[0051] The fourth lens E4

[0052] Fifth lens E5

[0053] Filter element E6

[0054] Aperture ST

[0055] Aperture S1, S2

[0056] Imaging surfaceIMG

[0057] Electronic photosensitive element IS

[0058] Inflection point IP

[0059] Critical point CP

[0060] Electronic device 200, 300, 400

[0061] Imaging Lenses 101

[0062] Driving device 102

[0063] Electronic photosensitive element 103

[0064] Image stabilization module 104

[0065] Display module 210

[0066] Flash module 209, 309, 409

[0067] The thickness of the first lens on the optical axis is CT1

[0068] The thickness of the second lens on the optical axis is CT2

[0069] The thickness of the third lens on the optical axis is CT3

[0070] The thickness of the fourth lens on the optical axis is CT4

[0071] The thickness of the fifth lens on the optical axis is CT5

[0072] The maximum thickness CTmax of each lens on the optical axis among the five lenses

[0073] The minimum thickness of each lens on the optical axis is CTmin

[0074] The focal length f of the optical imaging lens

[0075] The combined focal length of the first and second lenses is f12

[0076] The focal length of the second lens is f2

[0077] The focal length of the third lens is f3

[0078] The focal length of the fourth lens is f4

[0079] The focal length of the fifth lens is f5

[0080] Aperture value Fno of optical imaging lens

[0081] Half of the maximum field of view in an optical imaging lens HFOV

[0082] Maximum image height ImgH of optical imaging lens

[0083] The radius of curvature of the image side of the first lens is R2

[0084] The radius of curvature of the second lens object side R3

[0085] The curvature radius R4 of the image side of the second lens

[0086] The radius of curvature of the image side of the third lens is R6

[0087] The radius of curvature of the fourth lens object side surface is R7

[0088] The curvature radius of the image side of the fourth lens is R8

[0089] The radius of curvature of the fifth lens object side surface is R9

[0090] The distance between the first lens and the second lens on the optical axis is T12

[0091] The distance between the second lens and the third lens on the optical axis is T23

[0092] The distance between the third lens and the fourth lens on the optical axis is T34

[0093] The distance between the fourth lens and the fifth lens on the optical axis is T45

[0094] The distance TL from the object side of the first lens to the imaging surface on the optical axis

[0095] Abbe number V2 of the second lens

[0096] Abbe number V3 of the third lens

[0097] Abbe number V4 of the fourth lens

[0098] Abbe number V5 of the fifth lens

[0099] The maximum distance between the optical effective area of ​​the first lens object side and the optical axis is Y11

[0100] The maximum distance between the optical effective area of ​​the image side of the fifth lens and the optical axis is Y52

[0101] The maximum distance YS between the optical effective area of ​​the aperture and the optical axis DETAILED DESCRIPTION

[0102] The present invention discloses an optical imaging lens, comprising five lenses, wherein the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical path, and the five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction.

[0103] The first lens has negative refractive power, which helps to increase the viewing angle.

[0104] The image side surface of the first lens is concave at the near optical axis, and the surface shape and refractive power of the first lens can be adjusted to help increase the viewing angle.

[0105] The second lens has positive refractive power, which helps to compress the volume of the object side end of the optical imaging lens.

[0106] The object side surface of the second lens is convex near the optical axis, which can adjust the surface shape and refractive power of the second lens and help compress the volume of the object side end of the optical imaging lens.

[0107] The image side of the second lens is convex at the near optical axis, which can adjust the direction of light travel and help increase the viewing angle.

[0108] The third lens has negative refractive power, which helps to balance the refractive power distribution of the optical imaging lens to correct aberrations such as spherical aberration.

[0109] The image side surface of the third lens is concave near the optical axis, which can cooperate with the fourth lens to help correct aberrations.

[0110] The fourth lens element has positive refractive power, which helps to compress the image side volume of the optical imaging lens.

[0111] The object side of the fourth lens is convex near the optical axis, which helps to improve the imaging quality of wide field of view light.

[0112] The image side surface of the fourth lens is convex at the near optical axis, which can adjust the direction of light travel and help to increase the imaging surface.

[0113] The fifth lens has negative refractive power, which helps to adjust the back focus to an appropriate length.

[0114] The object side surface of the fifth lens is concave near the optical axis, which can adjust the incident angle of light on the fifth lens and help reduce surface reflection.

[0115] At least one of the five lenses has at least one inflection point on at least one of the object side and image side at an off-axis position, which can increase the degree of change of the lens surface, help to compress the volume and correct aberrations. At least two or at least three of the five lenses may each have at least one inflection point on at least one of the object side and image side at an off-axis position.

[0116] The image side surface of the third lens has at least one convex critical point off the axis, which can adjust the surface shape of the third lens and help correct off-axis aberration.

[0117] The F-number of the optical imaging lens is Fno. When the optical imaging lens satisfies the following relationship: 1.5 < Fno < 2.0, a balance can be achieved between illuminance and depth of field. Among them, it can also satisfy: 1.6 < Fno < 1.9. Among them, it can also satisfy: 1.69 ≤ Fno ≤ 1.88.

[0118] The Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5. When the optical imaging lens satisfies the following relationship: 1.8 < (V2 + V4) / (V3 + V5) < 4.0, the material configuration can be adjusted to correct aberrations such as chromatic aberration. Among them, it can also satisfy: 2.1 < (V2 + V4) / (V3 + V5) < 3.5. Among them, it can also satisfy: 2.35 ≤ (V2 + V4) / (V3 + V5) ≤ 3.05.

[0119] The Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5. When the optical imaging lens satisfies the following relationship: 1.5 < V4 / V5 < 4.0, the fourth lens and the fifth lens can cooperate with each other to correct aberrations such as chromatic aberration. Among them, it can also satisfy: 1.7 < V4 / V5 < 3.5. Among them, it can also satisfy: 1.98 ≤ V4 / V5 ≤ 3.05.

[0120] The thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45. When the optical imaging lens satisfies the following relationship: 1.1 < (CT4 + CT5) / T45 < 7.3, the fourth lens and the fifth lens can cooperate with each other, which helps to adjust the volume distribution at the image side end of the optical imaging lens. Among them, it can also satisfy: 1.6 < (CT4 + CT5) / T45 < 5.4. Among them, it can also satisfy: 2.00 ≤ (CT4 + CT5) / T45 ≤ 4.01.

[0121] The thickness of the fourth lens on the optical axis is CT4, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45. When the optical imaging lens satisfies the following relationship: 0.25 < CT4 / T45 < 5.5, the fourth lens and the fifth lens can cooperate with each other, which helps to adjust the volume distribution at the image side end of the optical imaging lens. Among them, it can also satisfy: 0.65 < CT4 / T45 < 4.3. Among them, it can also satisfy: 1.0 < CT4 / T45 < 3.2. Among them, it can also satisfy: 1.46 ≤ CT4 / T45 ≤ 2.98.

[0122] The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5. When the optical imaging lens satisfies the following relationship: 0.80 < (CT2 + CT4) / (CT1 + CT3 + CT5) < 1.9, the lens distribution of the optical imaging lens can be adjusted, which helps to increase the field of view and compress the volume.

[0123] The radius of curvature of the image side of the first lens is R2, and the radius of curvature of the object side of the second lens is R3. When the optical imaging lens satisfies the following relationship: 0.75 < R2 / R3 < 2.3, the surface shapes of the first lens and the second lens can be matched with each other, which helps to correct aberrations and reduce stray light.

[0124] The focal length of the third lens is f3, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5. When the optical imaging lens satisfies the following relationship: -11 < (f3 + f5) / f4 < -3.2, the refractive power distribution of the optical imaging lens can be adjusted, which helps to correct spherical aberration and distortion.

[0125] The maximum distance between the optical effective area of the object side of the first lens and the optical axis is Y11, and the maximum distance between the optical effective area of the image side of the fifth lens and the optical axis is Y52. When the optical imaging lens satisfies the following relationship: 0.95 < Y52 / Y11 < 1.5, the traveling direction of light can be adjusted, which helps to balance the viewing angle size, imaging surface size and volume distribution.

[0126] The spacing distance between the first lens and the second lens on the optical axis is T12, the spacing distance between the second lens and the third lens on the optical axis is T23, the spacing distance between the third lens and the fourth lens on the optical axis is T34, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45. When the optical imaging lens satisfies the following relationship: 4.0 < (T12 + T45) / (T23 + T34) < 15, the lens distribution of the optical imaging lens can be adjusted, which helps to increase the field of view. Among them, it can also satisfy: 4.5 < (T12 + T45) / (T23 + T34) < 11.

[0127] The thickness of the fourth lens on the optical axis is CT4, the radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R8. When the optical imaging lens satisfies the following relationship: |CT4 / R7 + CT4 / R8| < 0.80, the surface shape of the fourth lens can be adjusted, which helps to correct aberrations such as coma.

[0128] The radius of curvature of the image side surface of the third lens is R6, and the focal length of the optical imaging lens is f. When the optical imaging lens satisfies the following relationship: 1.1 < R6 / f < 7.0, the surface shape and refractive power of the third lens can be adjusted to correct aberrations such as astigmatism. Among them, it can also satisfy: 1.4 < R6 / f < 5.5.

[0129] The combined focal length of the first lens and the second lens is f12, and the focal length of the optical imaging lens is f. When the optical imaging lens satisfies the following relationship: 1.1 < f12 / f < 4.0, it helps to compress the volume of the object side end of the optical imaging lens. Among them, it can also satisfy: 1.3 < f12 / f < 3.0.

[0130] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum image height of the optical imaging lens is ImgH (which can be half of the total diagonal length of the effective sensing area of the electronic photosensitive element). When the optical imaging lens satisfies the following relationship: 1.6 < TL / ImgH < 2.6, a balance can be achieved between compressing the total length and increasing the imaging surface.

[0131] Half of the maximum viewing angle in the optical imaging lens is HFOV. When the optical imaging lens satisfies the following relationship: 49.2 degrees < HFOV < 70.3 degrees, it helps to increase the viewing angle and avoid aberrations such as distortion caused by too large a viewing angle.

[0132] The maximum value of the thickness of each lens on the optical axis among the five lenses is CTmax, and the minimum value of the thickness of each lens on the optical axis among the five lenses is CTmin. When the optical imaging lens satisfies the following relationship: 2.8 < CTmax / CTmin < 4.3, the lens distribution of the optical imaging lens can be adjusted, which helps to compress the volume.

[0133] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the focal length of the optical imaging lens is f. When the optical imaging lens satisfies the following relationship: 1.5 < TL / f < 3.9, a balance can be achieved between compressing the total length and increasing the viewing angle.

[0134] The maximum distance between the optical effective area of the image side surface of the fifth lens and the optical axis is Y52, and the maximum distance between the optical effective area of the aperture and the optical axis is YS. When the optical imaging lens satisfies the following relationship: 2.2 < Y52 / YS < 3.5, the traveling direction of light can be adjusted, which helps to increase the field of view and correct off-axis aberrations.

[0135] The object side surface of the fifth lens is R9, and the focal length of the optical imaging lens is f. When the optical imaging lens satisfies the following relationship: -5.0 < R9 / f < -0.10, the surface shape and refractive power of the fifth lens can be adjusted, which helps to improve the imaging quality of wide-field light. Among them, it can also satisfy: -4.0 < R9 / f < -0.25.

[0136] The focal length of the second lens is f2, and the thickness of the second lens on the optical axis is CT2. When the optical imaging lens satisfies the following relationship: 2.4 < f2 / CT2 < 5.0, the surface shape and refractive power of the second lens can be adjusted, which helps to compress the volume. Among them, it can also satisfy: 2.6 < f2 / CT2 < 4.5.

[0137] The radius of curvature of the image side surface of the second lens is R4, and the thickness of the second lens on the optical axis is CT2. When the optical imaging lens satisfies the following relationship: -5.0 < R4 / CT2 < -2.0, the surface shape of the second lens can be adjusted, which helps to form a wide-angle configuration.

[0138] The present disclosure provides an imaging device, including the aforementioned optical imaging lens and an electronic photosensitive element.

[0139] The present disclosure provides an electronic device, including the aforementioned imaging device.

[0140] Please refer to Figure 8 the illustration of Figure 8 Therefore, the first embodiment of the present disclosure is used as an example to illustrate the schematic diagrams of the parameters Y11, Y52, and YS of the optical imaging lens, the inflection point on the lens surface, and the convex critical point on the image side surface of the third lens. Among them, the maximum distance between the optical effective area of the object side surface of the first lens and the optical axis is Y11, the maximum distance between the optical effective area of the image side surface of the fifth lens and the optical axis is Y52, the maximum distance between the optical effective area of the aperture and the optical axis is YS, the inflection point on the lens surface is IP, and the convex critical point on the image side surface of the third lens is CP. Figure 8 The inflection point on the surface of some lenses and the convex critical point on the image side surface of the third lens in the first embodiment of the present disclosure are shown for exemplary illustration. However, in the first embodiment and other embodiments of the present disclosure, each lens surface may have one or more inflection points or one or more critical points. The inflection point on the lens surface of the optical imaging lens of the present disclosure is the intersection point where the positive and negative curvatures of the lens surface change. The critical point is the tangent point on the lens surface that is tangent to a tangent plane perpendicular to the optical axis except for the intersection point with the optical axis.

[0141] The above technical features of the optical imaging lens of the present disclosure can be combined and configured to achieve corresponding effects.

[0142] In the optical imaging lens disclosed herein, the material of the optical element may be glass or plastic. If the material of the optical element is glass, the degree of freedom of the configuration of the refractive power of the optical imaging lens can be increased, and the influence of the external ambient temperature change on the imaging can be reduced, and the glass optical element can be made using grinding or molding techniques. If the material of the optical element is plastic, the production cost can be effectively reduced. In addition, a spherical surface or an aspherical surface (ASP) can be set on the mirror surface, wherein the spherical optical element can reduce the difficulty of manufacturing, and if an aspherical surface is set on the mirror surface, more control variables can be obtained to eliminate aberrations, reduce the number of optical elements, and effectively reduce the total length of the optical imaging lens disclosed herein, and the aspherical surface can be made by plastic injection molding or molded glass lenses.

[0143] In the optical imaging lens disclosed herein, if the surface of an optical element is an aspherical surface, it means that the entire or a part of the optically effective area of ​​the surface of the optical element is an aspherical surface.

[0144] In the optical imaging lens disclosed herein, additives may be selectively added to any (or more) optical element materials to produce light absorption or light interference effects, so as to change the optical element's transmittance for light of a specific wavelength, thereby reducing stray light and color deviation. For example, the additive may have the function of filtering out light of 600 nanometers to 800 nanometers in the system to help reduce excess red light or infrared light; or it may filter out light of 350 nanometers to 450 nanometers to reduce excess blue light or ultraviolet light. Therefore, the additive may prevent light of a specific wavelength from interfering with imaging. In addition, the additive may be evenly mixed in plastic and made into an optical element using injection molding technology. In addition, the additive may also be configured as a coating on the surface of the lens to provide the above-mentioned effects.

[0145] In the optical imaging lens disclosed herein, at least one stop may be provided, such as an aperture stop, a glare stop or a field stop, to help reduce stray light and improve image quality.

[0146] In the optical imaging lens disclosed herein, the aperture configuration can be front or center. The front aperture means that the aperture is set between the object and the first optical element, and the center aperture means that the aperture is set between the first optical element and the imaging surface. The front aperture can make the exit pupil of the optical imaging lens have a longer distance from the imaging surface, so that it has a telecentric effect, which can increase the efficiency of electronic photosensitive elements such as CCD or CMOS in receiving images; the center aperture helps to expand the field of view of the lens, so that the optical imaging lens has the advantages of a wide-angle lens.

[0147] The present disclosure may appropriately set a variable aperture element, which may be a mechanical component or a light control element, which can control the size and shape of the aperture by electricity or electrical signals. The mechanical component may include movable parts such as a blade set and a shielding plate; the light control element may include a filter element, an electrochromic material, a liquid crystal layer and other shielding materials. The variable aperture element can enhance the image adjustment capability by controlling the amount of light entering the image or the exposure time. In addition, the variable aperture element may also be the aperture disclosed in the present disclosure, which can adjust the image quality, such as the depth of field or the exposure speed, by changing the F value.

[0148] In the optical imaging lens disclosed herein, if the surface of an optical element is convex and the position of the convex surface is not defined, it means that the surface of the optical element may be convex at the near optical axis; if the surface of the optical element is concave and the position of the concave surface is not defined, it means that the surface of the optical element may be concave at the near optical axis. If the refractive power or focal length of an optical element does not define its regional position, it means that the refractive power or focal length of the optical element may be the refractive power or focal length of the optical element at the near optical axis.

[0149] In the optical imaging lens disclosed in the present invention, at least one element having the function of deflecting the optical path, such as a prism or a reflector, may be selectively disposed on the optical path between the object and the imaging surface. The prism surface or the reflector surface may be a plane, a spherical surface, an aspherical surface, or a free-form surface, so as to provide the optical imaging lens with a higher flexibility in spatial configuration, so that the electronic device is not restricted by the total optical length of the optical imaging lens in terms of lightness and thinness.

[0150] In the optical imaging lens disclosed herein, the imaging surface of the optical imaging lens can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, and in particular refers to a curved surface with a concave surface facing the object side. In addition, one or more imaging correction elements (flat field elements, etc.) can be selectively arranged between the optical element closest to the imaging surface and the imaging surface in the optical imaging lens disclosed herein to achieve the effect of correcting the image (image bending, etc.). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, surface shape (convex or concave, spherical or aspherical, diffractive surface and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally speaking, the preferred imaging correction element is configured as a thin plano-concave element with a concave surface facing the object side and is arranged close to the imaging surface.

[0151] The present disclosure may appropriately place one or more optical elements to limit the form of light passing through the system. The optical element may be a filter, a polarizer, etc. (but not limited to), and the optical element may be a single element, a composite component, or presented in the form of a film, etc. (but not limited to). The optical element may be placed at the object end, the image end, or between the lenses of the system to control the passage of a specific form of light to meet application requirements.

[0152] The optical imaging lens disclosed herein may include at least one optical lens, optical element or carrier, at least one surface of which has a low-reflection layer, and the low-reflection layer can effectively reduce the stray light generated by the reflection of light at the interface. The low-reflection layer can be arranged in the non-effective area of ​​the object side or image side of the optical lens, or the connecting surface between the object side and the image side; the optical element can be a shading element, an annular spacer element, a lens barrel element, a flat glass (Coverglass), a blue glass (Blue glass), a filter element (Filter, Color filter), an optical path turning element, a prism or a mirror, etc.; the carrier can be a lens assembly lens mount, a microlens (Microlens) arranged on a photosensitive element, the periphery of a photosensitive element substrate, or a glass sheet used to protect a photosensitive element, etc.

[0153] The optical imaging lens disclosed in the present invention will be described in detail through the following specific embodiments in conjunction with the accompanying drawings.

[0154] First embodiment

[0155] Please refer to the schematic diagram of the imaging device of the first embodiment of the present disclosure. Figure 1A , please refer to the aberration curve Figure 1B The imaging device 1 of the first embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture ST, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0156] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has two inflection points at an off-axis position. Its image side surface is concave near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0157] The second lens E2 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0158] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points and a convex critical point at an off-axis position. Both the object side surface and the image side surface are aspherical.

[0159] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is convex near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0160] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0161] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0162] The detailed optical data of the first embodiment are shown in Table 1A, where the units of the radius of curvature, thickness and focal length are in millimeters, f represents focal length, Fno represents aperture value, HFOV represents half of the maximum viewing angle, and surfaces 0-15 represent surfaces from the object side to the image side in sequence. Its aspheric surface data are shown in Table 1B, where k represents the cone coefficient in the aspheric curve equation, and A4-A26 represents the 4th-26th order aspheric surface coefficients of each surface. In addition, the following tables of the embodiments correspond to the schematic diagrams and aberration curves of the embodiments, and the definitions of the data in the tables are the same as those in Tables 1A and 1B of the first embodiment, and are not repeated here.

[0163]

[0164]

[0165]

[0166]

[0167] The equation of the above aspheric curve is expressed as follows:

[0168]

[0169] in,

[0170] X: displacement parallel to the optical axis from the intersection of the aspheric surface and the optical axis to the point on the aspheric surface at a distance Y from the optical axis;

[0171] Y: the vertical distance between the point on the aspheric curve and the optical axis;

[0172] R: radius of curvature;

[0173] k: cone coefficient;

[0174] Ai: i-th order aspheric coefficient.

[0175] In the first embodiment, the focal length f of the optical imaging lens is 1.02 millimeters (mm).

[0176] In the first embodiment, the aperture value Fno of the optical imaging lens is 1.85.

[0177] In the first embodiment, half of the maximum viewing angle HFOV in the optical imaging lens is 64.0 degrees.

[0178] In the first embodiment, the Abbe number of the second lens E2 is V2, the Abbe number of the third lens E3 is V3, the Abbe number of the fourth lens E4 is V4, and the Abbe number of the fifth lens E5 is V5, and the relationship thereof is: (V2+V4) / (V3+V5)=2.69.

[0179] In the first embodiment, the Abbe number of the fourth lens E4 is V4, and the Abbe number of the fifth lens E5 is V5, and the relationship thereof is: V4 / V5=2.38.

[0180] In the first embodiment, the thickness of the first lens E1 on the optical axis is CT1, the thickness of the second lens E2 on the optical axis is CT2, the thickness of the third lens E3 on the optical axis is CT3, the thickness of the fourth lens E4 on the optical axis is CT4, and the thickness of the fifth lens E5 on the optical axis is CT5, and the relationship thereof is: (CT2+CT4) / (CT1+CT3+CT5)=1.74.

[0181] In the first embodiment, the thickness of the fourth lens E4 on the optical axis is CT4, the thickness of the fifth lens E5 on the optical axis is CT5, and the distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the relationship is: (CT4+CT5) / T45=4.01. In this embodiment, the distance between two adjacent lenses on the optical axis refers to the distance between two adjacent mirror surfaces of the adjacent lenses on the optical axis.

[0182] In the first embodiment, the distance between the first lens E1 and the second lens E2 on the optical axis is T12, the distance between the second lens E2 and the third lens E3 on the optical axis is T23, the distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, and the distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the relationship thereof is: (T12+T45) / (T23+T34)=5.97.

[0183] In the first embodiment, the thickness of the fourth lens E4 on the optical axis is CT4, the curvature radius of the object-side surface of the fourth lens E4 is R7, and the curvature radius of the image-side surface of the fourth lens E4 is R8, and the relationship thereof is: |CT4 / R7+CT4 / R8|=0.55.

[0184] In the first embodiment, the thickness of the fourth lens E4 on the optical axis is CT4, and the distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the relationship thereof is: CT4 / T45=2.98.

[0185] In the first embodiment, the maximum thickness of each lens in the five lenses on the optical axis is CTmax, and the minimum thickness of each lens in the five lenses on the optical axis is CTmin, and the relationship is: CTmax / CTmin=3.67. In this embodiment, the thickness of the fourth lens E4 on the optical axis is greater than the thickness of the other lenses (E1, E2, E3, E5) on the optical axis, so CTmax is the thickness of the fourth lens E4 on the optical axis, and the thickness of the third lens E3 on the optical axis is less than the thickness of the other lenses (E1, E2, E4, E5) on the optical axis, so CTmin is the thickness of the third lens E3 on the optical axis.

[0186] In the first embodiment, the distance between the object side surface of the first lens E1 and the imaging surface IMG on the optical axis is TL, and the focal length of the optical imaging lens is f, and the relationship thereof is: TL / f=3.31.

[0187] In the first embodiment, the distance between the object side surface of the first lens E1 and the imaging surface IMG on the optical axis is TL, and the maximum image height of the optical imaging lens is ImgH, and the relationship thereof is: TL / ImgH=2.25.

[0188] In the first embodiment, the curvature radius of the image-side surface of the first lens E1 is R2, and the curvature radius of the object-side surface of the second lens E2 is R3, and the relationship thereof is: R2 / R3=1.56.

[0189] In the first embodiment, the curvature radius of the image-side surface of the second lens E2 is R4, and the thickness of the second lens E2 on the optical axis is CT2, and the relationship thereof is: R4 / CT2=-4.17.

[0190] In the first embodiment, the curvature radius of the image-side surface of the third lens E3 is R6, and the focal length of the optical imaging lens is f, and the relationship is: R6 / f=1.92.

[0191] In the first embodiment, the radius of curvature of the object side surface of the fifth lens E5 is R9, and the focal length of the optical imaging lens is f, and the relationship thereof is: R9 / f=-3.54.

[0192] In the first embodiment, the focal length of the third lens E3 is f3, the focal length of the fourth lens E4 is f4, and the focal length of the fifth lens E5 is f5, and the relationship thereof is: (f3+f5) / f4=-4.32.

[0193] In the first embodiment, the combined focal length of the first lens E1 and the second lens E2 is f12, and the focal length of the optical imaging lens is f, and the relationship is: f12 / f=1.62.

[0194] In the first embodiment, the focal length of the second lens E2 is f2, and the thickness of the second lens E2 on the optical axis is CT2, and the relationship thereof is: f2 / CT2=3.08.

[0195] In the first embodiment, the maximum distance between the optical effective area of ​​the image-side surface of the fifth lens E5 and the optical axis is Y52, and the maximum distance between the optical effective area of ​​the object-side surface of the first lens E1 and the optical axis is Y11, and the relationship is: Y52 / Y11=1.13.

[0196] In the first embodiment, the maximum distance between the optical effective area of ​​the image-side surface of the fifth lens E5 and the optical axis is Y52, and the maximum distance between the optical effective area of ​​the aperture and the optical axis is YS, and the relationship thereof is: Y52 / YS=2.98.

[0197] Second embodiment

[0198] Please refer to the schematic diagram of the imaging device of the second embodiment of the present disclosure. Figure 2A , please refer to the aberration curve Figure 2B The imaging device 2 of the second embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture ST, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a stop S2, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0199] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is a plane near the optical axis and has an inflection point at an off-axis position. Its image side surface is a concave surface near the optical axis and has an inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0200] The second lens E2 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0201] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points and a convex critical point at an off-axis position. Both the object side surface and the image side surface are aspherical.

[0202] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is convex near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0203] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has two inflection points at an off-axis position. Its image side surface is convex near the optical axis and has three inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0204] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0205] The optical data of the second embodiment are shown in Table 2A, and the aspheric surface data thereof are shown in Table 2B.

[0206]

[0207]

[0208]

[0209]

[0210] The expression of the aspheric curve equation of the second embodiment is the same as that of the first embodiment. In addition, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in Table 2C.

[0211]

[0212] Third embodiment

[0213] Please refer to the schematic diagram of the imaging device according to the third embodiment of the present disclosure. Figure 3A , please refer to the aberration curve Figure 3B The imaging device 3 of the third embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture ST, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a stop S2, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0214] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has an inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0215] The second lens E2 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0216] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points and a convex critical point at an off-axis position. Both the object side surface and the image side surface are aspherical.

[0217] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is convex near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0218] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0219] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0220] The optical data of the third embodiment are shown in Table 3A, and the aspheric surface data thereof are shown in Table 3B.

[0221]

[0222]

[0223]

[0224]

[0225] The expression of the aspheric curve equation of the third embodiment is the same as that of the first embodiment. In addition, the parameters of each relational expression are the same as those explained in the first embodiment, and the values ​​of each relational expression are listed in Table 3C.

[0226]

[0227] Fourth embodiment

[0228] Please refer to the schematic diagram of the imaging device according to the fourth embodiment of the present disclosure. Figure 4A , please refer to the aberration curve Figure 4B The imaging device 4 of the fourth embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture ST, a second lens E2, a stop S1, a third lens E3, a fourth lens E4, a stop S2, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0229] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is concave near the optical axis. Both the object side surface and the image side surface are aspherical.

[0230] The second lens E2 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0231] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points and a convex critical point at an off-axis position. Both the object side surface and the image side surface are aspherical.

[0232] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is convex near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0233] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has one inflection point at an off-axis position. Its image side surface is convex near the optical axis and has three inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0234] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0235] The optical data of the fourth embodiment are shown in Table 4A, and the aspheric surface data thereof are shown in Table 4B.

[0236]

[0237]

[0238]

[0239]

[0240] The expression of the aspheric curve equation of the fourth embodiment is the same as that of the first embodiment. In addition, the parameters of each relational expression are the same as those explained in the first embodiment, and the values ​​of each relational expression are listed in Table 4C.

[0241]

[0242] Fifth embodiment

[0243] Please refer to the schematic diagram of the imaging device according to the fifth embodiment of the present disclosure. Figure 5A , please refer to the aberration curve Figure 5B The imaging device 5 of the fifth embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture ST, a second lens E2, an aperture S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0244] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has two inflection points at an off-axis position. Its image side surface is concave near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0245] The second lens E2 has positive refractive power and is made of glass. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0246] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points and a convex critical point at an off-axis position. Both the object side surface and the image side surface are aspherical.

[0247] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is convex near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0248] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0249] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0250] The optical data of the fifth embodiment are shown in Table 5A, and the aspheric surface data thereof are shown in Table 5B.

[0251]

[0252]

[0253]

[0254]

[0255] The expression of the aspheric curve equation of the fifth embodiment is the same as that of the first embodiment. In addition, the parameters of each relational expression are the same as those explained in the first embodiment, and the values ​​of each relational expression are listed in Table 5C.

[0256]

[0257] Sixth embodiment

[0258] Please refer to the schematic diagram of the imaging device according to the sixth embodiment of the present disclosure. Fig. 6A , please refer to the aberration curve Figure 6B The imaging device 6 of the sixth embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture ST, a second lens E2, an aperture S1, a third lens E3, a fourth lens E4, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0259] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has two inflection points at an off-axis position. Its image side surface is concave near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0260] The second lens E2 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0261] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is convex near the optical axis and has two inflection points at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points and a convex critical point at an off-axis position. Both the object side surface and the image side surface are aspherical.

[0262] The fourth lens E4 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point at an off-axis position. Its image side surface is convex near the optical axis and has an inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0263] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0264] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0265] The optical data of the sixth embodiment are shown in Table 6A, and the aspheric surface data thereof are shown in Table 6B.

[0266]

[0267]

[0268]

[0269]

[0270] The expression of the aspheric curve equation of the sixth embodiment is the same as that of the first embodiment. In addition, the parameters of each relational expression are the same as those explained in the first embodiment, and the values ​​of each relational expression are listed in Table 6C.

[0271]

[0272] Seventh embodiment

[0273] Please refer to the schematic diagram of the imaging device according to the seventh embodiment of the present disclosure. Fig. 7A , please refer to the aberration curve Figure 7BThe imaging device 7 of the seventh embodiment includes an optical imaging lens and an electronic photosensitive element IS. The optical imaging lens includes a first lens E1, an aperture S1, a second lens E2, an aperture ST, a third lens E3, a fourth lens E4, an aperture S2, a fifth lens E5, a filter element E6 and an imaging surface IMG in order from the object side to the image side of the optical path. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical imaging lens includes five lenses (E1, E2, E3, E4, E5), and there are no other lenses inserted between the lenses.

[0274] The first lens E1 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has two inflection points at an off-axis position. Its image side surface is concave near the optical axis and has one inflection point at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0275] The second lens E2 has positive refractive power and is made of plastic. Its object side surface is convex near the optical axis and has an inflection point off the axis. Its image side surface is convex near the optical axis. Both the object side surface and the image side surface are aspherical.

[0276] The third lens E3 has negative refractive power and is made of plastic. Its object side surface is concave at the near optical axis, its image side surface is concave at the near optical axis, and its image side surface has two inflection points and a convex critical point at an off-axis position. Both its object side surface and image side surface are aspherical.

[0277] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, its image-side surface is convex near the optical axis, and its image-side surface has an inflection point at an off-axis position. Both its object-side surface and image-side surface are aspherical surfaces.

[0278] The fifth lens element E5 has negative refractive power and is made of plastic. Its object side surface is concave near the optical axis and has an inflection point at an off-axis position. Its image side surface is concave near the optical axis and has two inflection points at an off-axis position. Both the object side surface and the image side surface are aspherical surfaces.

[0279] The filter element E6 is disposed between the fifth lens E5 and the imaging surface IMG. The filter element E6 is made of glass and does not affect the focal length.

[0280] The optical data of the seventh embodiment are shown in Table 7A, and the aspheric surface data thereof are shown in Table 7B.

[0281]

[0282]

[0283]

[0284]

[0285] The expression of the aspheric curve equation of the seventh embodiment is the same as that of the first embodiment. In addition, the parameters of each relational expression are the same as those explained in the first embodiment, and the values ​​of each relational expression are listed in Table 7C.

[0286]

[0287] Eighth embodiment

[0288] Please refer to Fig. 9 , which is a three-dimensional schematic diagram of an image capturing device 100 according to the eighth embodiment of the present disclosure. Fig. 9 It can be seen that in this embodiment, the image capturing device 100 is a camera module. The image capturing device 100 includes an imaging lens 101, a driving device 102, and an electronic photosensitive element 103, wherein the imaging lens 101 includes the optical imaging lens of the first embodiment of the present disclosure, a lens barrel (not separately labeled) carrying the optical imaging lens, and a supporting device (not separately labeled). The imaging lens 101 can also be configured with the optical imaging lens of other embodiments described above, and the present disclosure is not limited thereto. The image capturing device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, and finally forms an image on the electronic photosensitive element 103 (i.e., the electronic photosensitive element IS of the first embodiment), and outputs the image data.

[0289] The driving device 102 may be an auto-focus module, and its driving method may use a driving system such as a voice coil motor (VCM), a micro electro-mechanical system (MEMS), a piezoelectric system (Piezoelectric), and a shape memory alloy (Shape Memory Alloy). The driving device 102 allows the imaging lens 101 to obtain a better imaging position, and can provide a clear image of the subject at different object distances.

[0290] The image capturing device 100 may be equipped with an electronic photosensitive element 103 (such as CMOS, CCD) with good sensitivity and low noise, which is disposed on the imaging surface of the optical imaging lens, and can truly present the good imaging quality of the imaging lens 101 .

[0291] In addition, the image capturing device 100 may further include an image stabilization module 104, which may be a kinetic energy sensing element such as an accelerometer, a gyroscope or a Hall Effect Sensor. In the ninth embodiment, the image stabilization module 104 is a gyroscope, but is not limited thereto. By adjusting the changes in different axes of the imaging lens 101 to compensate for the blurred image caused by shaking at the moment of shooting, the image quality of dynamic and low-light scene shooting is further improved, and advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) are provided.

[0292] The imaging device 100 disclosed herein is not limited to being applied to smart phones. The imaging device 100 can be applied to a mobile focus system as required, and has the characteristics of excellent aberration correction and good imaging quality. For example, the imaging device 100 can be applied to various electronic devices such as mobile vehicles, unmanned aerial vehicles, smart electronic products, tablet computers, wearable products, medical equipment, precision instruments, network monitoring equipment, portable image recorders, recognition systems, multi-lens devices, somatosensory game consoles, virtual reality, sports devices, and home intelligent assistance systems.

[0293] Ninth embodiment

[0294] Please refer to Fig. 10A and Fig. 10B ,in Fig. 10A This is a front view of an electronic device 200 according to a ninth embodiment of the present disclosure. Fig. 10B for Fig. 10A A rear view of the electronic device 200 is shown.

[0295] In the present embodiment, the electronic device 200 is a smart phone. The electronic device 200 includes image capturing devices 201, 202, 203, 204, 205, a flash module 209, a focus assist module, an image signal processor, an image software processor, and a display module 210. The image capturing devices 201, 202, 203 and the display module 210 are all disposed on the same side of the electronic device 200, and the display module 210 can be a user interface so that the image capturing devices 201, 202, 203 can be used as a front lens to provide a selfie function, but the present disclosure is not limited thereto. The image capturing devices 204 and 205 are both disposed on the other side of the electronic device 200. The focus assist module can use a laser ranging or a Time of Flight (ToF) module, but the present disclosure is not limited thereto. Furthermore, the imaging devices 201, 202, 203, 204, and 205 may all include the optical imaging lens disclosed herein and may all have the same or similar structural configuration as the imaging device 100 in the eighth embodiment. Specifically, the imaging devices 201, 202, 203, 204, and 205 may each include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module, and may each include a reflective element as an element for deflecting the light path. The imaging lenses of the imaging devices 201, 202, 203, 204, and 205 may each include, for example, the optical imaging lens disclosed herein, a lens barrel for carrying the optical imaging lens, and a supporting device.

[0296] The imaging devices 201 and 205 are respectively wide-angle imaging devices, the imaging devices 202 and 204 are respectively ultra-wide-angle imaging devices, and the imaging device 203 is a time-of-flight ranging imaging device. The imaging devices 201 and 202 of this embodiment have different viewing angles, and the imaging devices 204 and 205 have different viewing angles, so that the electronic device 200 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 203 can obtain depth information of the image. The above-mentioned electronic device 200 is taken as an example including a plurality of imaging devices 201, 202, 203, 204, and 205, but the number and configuration of the imaging devices are not intended to limit the present disclosure.

[0297] When the user takes a photo of the subject, the electronic device 200 uses at least one of the image capturing devices 204 and 205 to focus and capture the image, and can activate the flash module 209 for fill light, and can use the object distance information of the subject provided by the focus assist module for rapid focusing, and the image signal processor performs image optimization processing to further improve the image quality produced by the optical imaging lens. The focus assist module can use an infrared or laser focus assist system to achieve rapid focusing. In addition, the electronic device 200 can also use at least one of the image capturing devices 201, 202, and 203 to take photos. The display module 210 can use a touch screen to cooperate with the diverse functions of the image software processor to perform image capture and image processing (or a physical capture button can be used for shooting). The image processed by the image software processor can be displayed on the display module 210.

[0298] Tenth embodiment

[0299] Please refer to Fig.11 , Fig.11 It is a rear view of the electronic device 300 according to the tenth embodiment of the present disclosure.

[0300] In this embodiment, the electronic device 300 is a smart phone. The electronic device 300 includes image capturing devices 304, 305, 306, a flash module 309, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). The image capturing devices 304, 305, 306 and the flash module 309 are all disposed on the same side of the electronic device 300, while the display module is disposed on the other side of the electronic device 300. Moreover, the image capturing devices 304, 305, 306 may all include the optical imaging lens disclosed herein and may all have the same or similar structural configuration as the image capturing device 100 in the eighth embodiment, which will not be described in detail herein.

[0301] The imaging device 304 is an ultra-wide-angle imaging device, the imaging device 305 is a wide-angle imaging device, and the imaging device 306 is a telephoto imaging device. The imaging devices 304, 305, 306 of this embodiment have different viewing angles, so that the electronic device 300 can provide different magnifications to achieve an optical zoom shooting effect. In addition, the imaging device 306 is a telephoto imaging device configured with an optical path turning element, so that the total length of the imaging device 306 is not limited by the thickness of the electronic device 300. The above-mentioned electronic device 300 is taken as an example including a plurality of imaging devices 304, 305, 306, but the number and configuration of the imaging devices are not intended to limit the present disclosure. When the user shoots a subject, the electronic device 300 uses at least one of the imaging devices 304, 305, 306 to focus light and capture an image, and can activate the flash module 309 for fill light, and performs subsequent processing in a manner similar to the aforementioned embodiment, which will not be repeated here.

[0302] Eleventh Embodiment

[0303] Please refer to Fig.12 , Fig.12 It is a rear view of the electronic device 400 according to the eleventh embodiment of the present disclosure.

[0304] In this embodiment, the electronic device 400 is a smart phone. The electronic device 400 includes image capturing devices 404a, 404b, 405a, 405b, 406a, 406b, 407a, 407b, 408, a flash module 409, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). The image capturing devices 404a, 404b, 405a, 405b, 406a, 406b, 407a, 407b, 408 and the flash module 409 are all disposed on the same side of the electronic device 400, and the display module is disposed on the other side of the electronic device 400. Furthermore, the imaging devices 404a, 404b, 405a, 405b, 406a, 406b, 407a, 407b, 408 may all include the optical imaging lens disclosed herein and may all have the same or similar structural configuration as the imaging device 100 in the eighth embodiment, which will not be described in detail herein.

[0305] The image capturing devices 404a and 404b are respectively ultra-wide-angle image capturing devices, the image capturing devices 405a and 405b are respectively wide-angle image capturing devices, the image capturing devices 406a, 406b, 407a and 407b are respectively telephoto image capturing devices, and the image capturing device 408 is a time-of-flight ranging image capturing device. The image capturing devices 404a, 404b, 405a, 405b, 406a, 406b, 407a and 407b of this embodiment have different viewing angles, so that the electronic device 400 can provide different magnifications to achieve the optical zoom shooting effect. In addition, the image capturing device 406a and the image capturing device 406b can each be a telephoto image capturing device with an optical path turning element configuration. In addition, the image capturing device 408 can obtain depth information of the image. The electronic device 400 is taken as an example including a plurality of image capturing devices 404a, 404b, 405a, 405b, 406a, 406b, 407a, 407b, 408, but the number and configuration of the image capturing devices are not intended to limit the present disclosure. When the user takes a photo of the subject, the electronic device 400 uses at least one of the image capturing devices 404a, 404b, 405a, 405b, 406a, 406b, 407a, 407b, 408 to focus light and capture the image, and can activate the flash module 409 for fill light, and perform subsequent processing in a manner similar to the aforementioned embodiment, which will not be described in detail here.

Claims

1. An optical imaging lens, characterized in that: The invention comprises five lenses, wherein the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side along the optical path, and the five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction; The first lens has negative refractive power, the image side surface of the first lens is concave at the near optical axis, the object side surface of the second lens is convex at the near optical axis, the image side surface of the third lens is concave at the near optical axis, the object side surface of the fourth lens is convex at the near optical axis, the object side surface of the fifth lens is concave at the near optical axis, and at least one of the five lenses has at least one inflection point at an off-axis position between its object side surface and its image side surface; The aperture value of the optical imaging lens is Fno, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship: 1.5 <Fno<2.0; 1.8<(V2+V4) / (V3+V5)<4.0; and 0.25 <CT4 / T45<5.5。 2. The optical imaging lens according to claim 1, wherein: The aperture value of the optical imaging lens is Fno, which satisfies the following relationship: 1.6 <Fno<1.9。 3. The optical imaging lens according to claim 2, wherein: The aperture value of the optical imaging lens is Fno, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the interval between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship: 1.69≤Fno≤1.88; 2.35≤(V2+V4) / (V3+V5)≤3.05; 1.98≤V4 / V5≤3.05; 2.00≤(CT4+CT5) / T45≤4.01; and 1.46≤CT4 / T45≤2.

98.

4. The optical imaging lens according to claim 1, wherein: The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, which satisfy the following relationship: 0.80<(CT2+CT4) / (CT1+CT3+CT5)<1.

9.

5. The optical imaging lens according to claim 1, wherein: The curvature radius of the image side of the first lens is R2, and the curvature radius of the object side of the second lens is R3, which satisfies the following relationship: 0.75 <R2 / R3<2.3。 6. The optical imaging lens according to claim 1, wherein: The focal length of the third lens is f3, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which satisfy the following relationship: -11<(f3+f5) / f4<-3.

2.

7. The optical imaging lens according to claim 1, wherein: The image side surface of the third lens has at least one convex critical point at an off-axis position, the fourth lens has positive refractive power, the image side surface of the fourth lens is convex at a position near the optical axis, the maximum distance between the optical effective area of ​​the object side surface of the first lens and the optical axis is Y11, and the maximum distance between the optical effective area of ​​the image side surface of the fifth lens and the optical axis is Y52, which satisfies the following relationship: 0.95 <Y52 / Y11<1.5。 8. An imaging device, characterized in that: The optical imaging lens as claimed in claim 1 and an electronic photosensitive element are included.

9. An electronic device, characterized in that: The invention comprises the imaging device as claimed in claim 8.

10. An optical imaging lens, characterized in that: The invention comprises five lenses, wherein the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side along the optical path, and the five lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction; The first lens has negative refractive power, the image side surface of the first lens is concave at the near optical axis, the image side surface of the third lens is concave at the near optical axis, the object side surface of the fourth lens is convex at the near optical axis, the object side surface of the fifth lens is concave at the near optical axis, and at least one of the five lenses has at least one inflection point at an off-axis position between its object side surface and its image side surface; The aperture value of the optical imaging lens is Fno, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the interval between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship: 1.5 <Fno<2.0; 1.8<(V2+V4) / (V3+V5)<4.0; and 1.1<(CT4+CT5) / T45<7.

3.

11. The optical imaging lens according to claim 10, wherein: The Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which satisfy the following relationship: 2.1<(V2+V4) / (V3+V5)<3.

5.

12. The optical imaging lens according to claim 10, wherein: The thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the spacing distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relationship: 1.6<(CT4+CT5) / T45<5.

4.

13. The optical imaging lens according to claim 10, wherein: The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, and the distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfy the following relationship: 4.0<(T12+T45) / (T23+T34)<15.

14. The optical imaging lens according to claim 10, wherein: The thickness of the fourth lens on the optical axis is CT4, the radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R8, which satisfies the following relationship: |CT4 / R7 + CT4 / R8| < 0.

80.

15. The optical imaging lens according to claim 10, wherein: The radius of curvature of the image-side surface of the third lens is R6, and the focal length of the optical imaging lens is f, which satisfies the following relational expression: 1.1 < R6 / f < 7.

0.

16. The optical imaging lens according to claim 10, wherein: The combined focal length of the first lens and the second lens is f12, and the focal length of the optical imaging lens is f, which satisfies the following relational expression: 1.1 < f12 / f < 4.

0.

17. The optical imaging lens according to claim 10, wherein: The fifth lens has a negative refractive power. The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the maximum image height of the optical imaging lens is ImgH, and half of the maximum viewing angle in the optical imaging lens is HFOV, which satisfies the following relational expressions: 1.6 < TL / ImgH < 2.6; and 49.2 degrees < HFOV < 70.3 degrees.

18. An optical imaging lens, characterized in that: It includes five lenses. The five lenses are, in order from the object side to the image side along the optical path, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. And the five lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side; Wherein the image-side surface of the first lens is concave near the optical axis, the second lens has a positive refractive power, the object-side surface of the second lens is convex near the optical axis, the third lens has a negative refractive power, the object-side surface of the fourth lens is convex near the optical axis, the object-side surface of the fifth lens is concave near the optical axis, and at least one of the five lenses has at least one inflection point on at least one of its object-side surface and its image-side surface at the off-axis position; Wherein the F-number of the optical imaging lens is Fno, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the thickness of the fourth lens on the optical axis is CT4, and the distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relational expressions: 1.5 < Fno < 2.0; 1.5 < V4 / V5 < 4.0; and 0.65 < CT4 / T45 < 4.

3.

19. The optical imaging lens according to claim 18, wherein: The Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which satisfies the following relational expression: 1.7 < V4 / V5 < 3.

5.

20. The optical imaging lens according to claim 18, wherein: The thickness of the fourth lens on the optical axis is CT4, and the distance between the fourth lens and the fifth lens on the optical axis is T45, which satisfies the following relational expression: 1.0 < CT4 / T45 < 3.

2.

21. The optical imaging lens according to claim 18, wherein: The maximum value of the thickness of each of the five lenses on the optical axis is CTmax, and the minimum value of the thickness of each of the five lenses on the optical axis is CTmin, which satisfies the following relational expression: 2.8 < CTmax / CTmin < 4.

3.

22. The optical imaging lens according to claim 18, wherein: It further includes a diaphragm. The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the focal length of the optical imaging lens is f. Wherein the maximum distance between the optical effective area of the image-side surface of the fifth lens and the optical axis is Y52, and the maximum distance between the optical effective area of the diaphragm and the optical axis is YS, which satisfies the following relational expressions: 1.5 < TL / f < 3.9; and 2.2 < Y52 / YS < 3.

5.

23. The optical imaging lens according to claim 18, wherein: The object side surface of the fifth lens is R9, and the focal length of the optical imaging lens is f, which satisfies the following relationship: -5.0 <R9 / f<-0.10。 24. The optical imaging lens according to claim 18, wherein: The focal length of the second lens is f2, and the thickness of the second lens on the optical axis is CT2, which satisfies the following relationship: 2.4 <f2 / CT2<5.0。 25. The optical imaging lens according to claim 18, wherein: The image side surface of the second lens is convex at the near optical axis, the curvature radius of the image side surface of the second lens is R4, and the thickness of the second lens on the optical axis is CT2, which satisfies the following relationship: -5.0 <R4 / CT2<-2.0。

Images