Imaging lens and electronic device

Abstract

The utility model discloses an imaging lens, which comprises an optical element, wherein the optical element is a light-transmitting element. The optical element includes an optical portion and a peripheral portion. The optical part comprises an incident plane and an emergent plane, the imaging light enters the optical element from the incident plane, and the imaging light leaves the optical element from the emergent plane. The peripheral portion is farther from the optical axis of the imaging lens than the optical portion. The peripheral part comprises at least one connecting surface and a plurality of air barriers. The connecting surface is connected with the incident surface and the emergent surface. The air barrier is arranged on at least part of the surface of the peripheral part, and the air barrier is recessed from the at least part of the surface to the direction of the optical axis. The recessed profile of the air barrier includes at least one of a dot shape and a linear shape. The utility model further discloses an electronic device with the imaging lens.

Description

Technical Field

[0001] The utility model relates to an imaging lens and an electronic device, in particular to an imaging lens suitable for the electronic device. Background Art

[0002] As semiconductor processing technology continues to improve, the performance of electronic photosensitive components has increased, allowing pixels to achieve smaller sizes. Therefore, optical lenses with high imaging quality have become indispensable. Furthermore, with the rapid advancement of technology, the application range of mobile devices equipped with optical lenses has become wider, and the requirements for optical lenses have also become more diverse.

[0003] Generally speaking, the peripheral surfaces of optical elements such as optical lenses and optical reflective prisms of optical lenses that are not of effective diameter usually have a high reflectivity, and it is difficult to effectively reduce the non-imaging light incident on the peripheral surfaces. In particular, when the peripheral surface is a smooth plane, the non-imaging light will be reflected to the imaging surface after being incident on the peripheral surface, forming stray light and affecting the imaging quality. On the other hand, optical elements are usually manufactured by injection molding, and the injection mark is the cut mark at the runner of the corresponding casting system on the optical element. The injection mark is usually located on the peripheral surface of the non-effective diameter of the optical element, and the surface of the injection mark may be uneven due to the cutting, causing the non-imaging light to reflect from the injection mark and become stray light, thereby affecting the imaging quality. Utility Model Content

[0004] In view of the above-mentioned problems, the present invention discloses an imaging lens and an electronic device, which help to avoid the problem in the conventional art that non-imaging light is reflected to the imaging surface after being incident on the peripheral surface of the optical element with a non-effective diameter, thereby forming stray light.

[0005] The utility model provides an imaging lens, which includes an optical element, and the optical element is a light-transmitting element. The optical element includes an optical portion and a peripheral portion. The optical portion includes an incident surface and an exit surface, wherein imaging light enters the optical element from the incident surface and imaging light exits the optical element from the exit surface. The peripheral portion is farther from the optical axis of the imaging lens than the optical portion. Preferably, the peripheral portion includes at least one connecting surface, a reduction surface, a filling mark, and a plurality of air barriers. Preferably, the connecting surface connects the incident surface and the exit surface. Preferably, the reduction surface is adjacent to the connecting surface and is closer to the optical axis than the connecting surface. Preferably, the filling mark is provided on the reduction surface. Preferably, the air barrier is provided at least on the filling mark and is recessed toward the optical axis. Preferably, the recessed profile of the air barrier includes at least one of a point shape and a line shape. The recessed width of each air barrier is Wab, which preferably satisfies the following condition: 0.008 mm ≤ Wab ≤ 0.07 mm.

[0006] The utility model further provides an imaging lens, which includes an optical element, and the optical element is a light-transmitting element. The optical element includes an optical portion and a peripheral portion. The optical portion includes an incident surface and an exit surface, wherein the imaging light enters the optical element from the incident surface, and the imaging light leaves the optical element from the exit surface. The peripheral portion is farther away from the optical axis of the imaging lens than the optical portion. Preferably, the peripheral portion includes at least one connecting surface and a plurality of air barriers. Preferably, the connecting surface connects the incident surface and the exit surface. Preferably, the air barrier is arranged on at least a portion of the surface of the peripheral portion, and the air barrier is recessed from the at least portion of the surface toward the optical axis. Preferably, the recessed contour of the air barrier includes at least one of a point shape and a line shape.

[0007] The utility model provides an electronic device, which includes the aforementioned imaging lens.

[0008] According to the imaging lens and electronic device disclosed in the present invention, an air barrier is provided on at least a portion of the outer peripheral surface of an optical element. The air barrier is recessed from the provided surface toward the interior of the optical element. This air barrier blocks the reflection path of stray light on the outer peripheral surface, thereby preventing the image from being affected by stray light and ensuring imaging quality.

[0009] The above description of the content of the present invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principle of the present invention, and to provide further explanation of the claims of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 FIG. 1 is a perspective diagram of an imaging lens according to a first embodiment of the present invention.

[0011] Figure 2 Draw Figure 1 The cross section of the imaging lens and its partially enlarged schematic diagram.

[0012] Figure 3 Draw Figure 1 A three-dimensional diagram of the optical elements of the imaging lens and a magnified schematic diagram of its local area.

[0013] Figure 4 Draw Figure 3 The cross section of the optical element and its partial enlarged schematic diagram.

[0014] Figure 5 Draw Figure 3 The image side viewing angle of the optical element and its partial enlarged schematic diagram.

[0015] Figure 6 Draw Figure 3 A side view of the optical element and a partially enlarged schematic diagram.

[0016] Figure 7 Draw Figure 3 Schematic side view of the optical element.

[0017] Figure 8 A three-dimensional diagram and a partially enlarged schematic diagram of an optical element according to another embodiment of the present invention are shown.

[0018] Figure 9 Draw Figure 8 A side view of the optical element and a partially enlarged schematic diagram.

[0019] Figure 10 FIG. 4 is a perspective diagram of an imaging lens according to a second embodiment of the present invention.

[0020] Figure 11 Draw Figure 10 The cross section of the imaging lens and its partially enlarged schematic diagram.

[0021] Figure 12 Draw Figure 10 A three-dimensional diagram of the optical elements of the imaging lens and a magnified schematic diagram of its local area.

[0022] Figure 13 Draw Figure 12 Schematic diagram of the image side viewing angle of the optical element.

[0023] Figure 14 Draw Figure 12 A side view of the optical element and a partially enlarged schematic diagram.

[0024] Figure 15 Draw Figure 12 Schematic side view of the optical element.

[0025] Figure 16 FIG2 is a partial enlarged schematic diagram showing the periphery of an optical element and its air barrier according to another embodiment of the present invention.

[0026] Figure 17 FIG2 is a partial enlarged schematic diagram showing the periphery of an optical element and its air barrier according to another embodiment of the present invention.

[0027] Figure 18 FIG2 is a partial enlarged schematic diagram showing the periphery of an optical element and its air barrier according to another embodiment of the present invention.

[0028] Figure 19 FIG2 is a partial enlarged schematic diagram showing the periphery of an optical element and its air barrier according to another embodiment of the present invention.

[0029] Figure 20FIG2 is a partial enlarged schematic diagram showing the periphery of an optical element and its air barrier according to another embodiment of the present invention.

[0030] Figure 21 FIG. 4 is a perspective diagram of an imaging lens according to a third embodiment of the present invention.

[0031] Figure 22 Draw Figure 21 The cross section of the imaging lens and its partially enlarged schematic diagram.

[0032] Figure 23 Draw Figure 21 A three-dimensional diagram of the optical elements of the imaging lens and a magnified schematic diagram of its local area.

[0033] Figure 24 Draw Figure 23 A side view of the optical element and a partially enlarged schematic diagram.

[0034] Figure 25 A three-dimensional and partially enlarged schematic diagram of an optical element according to an embodiment of the present invention is shown in which an air barrier is formed by focusing a laser on a filling mark.

[0035] Figure 26 A schematic three-dimensional diagram of one side of an electronic device according to a fourth embodiment of the present invention is shown.

[0036] Figure 27 Draw Figure 26 A three-dimensional schematic diagram of the other side of the electronic device.

[0037] Figure 28 A schematic diagram illustrating image capture using an ultra-wide-angle imaging lens.

[0038] Figure 29 A schematic diagram illustrating image capture using a high-pixel imaging lens.

[0039] Figure 30 A schematic diagram illustrating the process of capturing an image using a telephoto lens is provided.

[0040] Figure 31 A schematic three-dimensional diagram of one side of an electronic device according to a fifth embodiment of the present invention is shown.

[0041] Figure 32 A schematic three-dimensional diagram of an electronic device according to a sixth embodiment of the present invention is shown.

[0042] Figure 33 Draw Figure 32 A schematic side view of an electronic device.

[0043] Figure 34 Draw Figure 32 A schematic top view of an electronic device.

[0044]

Explanation of symbols

[0045] 1,2,3,100a,100b,100c,100d,200,200a,200b,200c,200d,200e,200f,200g,200h,300: Imaging lens

[0046] 10,10a,20,30: Optical components

[0047] 11, 21, 31: Optical Department

[0048] 111,211,311: incident surface

[0049] 112,212,312: exit surface

[0050] 313: Reflective surface

[0051] 12,22,32: Peripheral part

[0052] 120, 220, 320: connection surface

[0053] 121,121a,221: Reduced surface

[0054] 122,122a,222,322: injection marks

[0055] 123,123a,223,223a,223b,223c,223d,223e,323: Air barrier

[0056] 400, 500, 600: Electronic devices

[0057] 401,501: Flash module

[0058] 402: Focus assist module

[0059] 403: Image Signal Processor

[0060] 404: Display Module

[0061] RP: Reflecting Prism

[0062] LG,LG1,LG2:Mirror group

[0063] LE: Lens

[0064] IMG: Imaging surface

[0065] OL: Optical axis

[0066] D1: First direction

[0067] D2: Second direction

[0068] Wab: The width of the air barrier depression

[0069] θab: The minimum angle formed by the curved contour of the air barrier

[0070] θg: The sweep angle of the injection mark centered on the optical axis

[0071] D: The maximum outer diameter of the optical element in the direction perpendicular to the optical axis

[0072] H: The shortest distance between the injection mark and the exit surface in the direction perpendicular to the optical axis

[0073] ET: Thickness of the outer periphery in the direction parallel to the optical axis

[0074] T1: The distance between two adjacent air barriers DETAILED DESCRIPTION

[0075] The following detailed description of the features and advantages of the present invention is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the disclosure of this specification, the scope of the claims, and the accompanying drawings, any person skilled in the art can easily understand the relevant objectives and advantages of the present invention. The following examples further illustrate the concepts of the present invention in detail but are not intended to limit the scope of the present invention in any way.

[0076] The present invention provides an imaging lens comprising an optical element, wherein the optical element is a light-transmitting element. The optical element may be, for example, a plastic lens, a molded glass lens, a ground glass lens, a plastic prism, a glass prism, a filter, or other optically functional element.

[0077] The optical element includes an optical portion and a peripheral portion. The optical portion includes an incident surface and an exit surface, wherein the imaging light enters the optical element from the incident surface, and the imaging light leaves the optical element from the exit surface. The peripheral portion is farther away from the optical axis of the imaging lens than the optical portion, and the peripheral portion includes at least one connecting surface and a plurality of air barriers (Air barrier). The at least one connecting surface connects the incident surface and the exit surface. The air barrier is provided on at least a portion of the surface of the peripheral portion, and the air barrier is recessed from the at least portion of the surface toward the optical axis. The recessed profile of the air barrier includes at least one of a point shape and a line shape. Thereby, the air barrier is recessed from the surface on which it is provided toward the interior of the optical element, so that the reflection path of stray light on the surface of the peripheral portion can be blocked by the air barrier, thereby preventing the image from being affected by stray light, thereby ensuring the imaging quality. In the embodiment where the recessed profile is linear, the recessed profile can be, for example, a straight line (such as Figure 3 as shown) or curve (as shown Figure 12as shown). In an embodiment where the concave profile is dot-shaped, the concave profile can be, for example, circular (as Figure 23 shown) or oval.

[0078] In one embodiment, the outer peripheral portion may further include a reducing surface, and the reducing surface may be adjacent to the connecting surface and closer to the optical axis than the connecting surface; thereby, it helps to reduce the volume of the optical element. Among them, an air barrier can be disposed on the reducing surface; thereby, the air barrier recesses from the reducing surface towards the interior of the optical element, and the reflection path of stray light on the reducing surface can be blocked by the air barrier, avoiding the influence of stray light on the image, so as to ensure the imaging quality. Please refer to Figure 5 , which shows the image-side view and its partial enlarged schematic diagram of the optical element of the imaging lens according to the first embodiment of the present invention. Figure 5 The dashed part in is the contour extension line of the adjacent connecting surface 120. From this, it can be seen that the reducing surface 121 is closer to the optical axis than the adjacent connecting surface 120.

[0079] In another embodiment, the outer peripheral portion may further include a gate trace, and the gate trace may be disposed on the connecting surface. Among them, an air barrier can be disposed on the connecting surface. Thereby, the air barrier recesses from the connecting surface towards the interior of the optical element, and the reflection path of stray light on the connecting surface can be blocked by the air barrier, avoiding the influence of stray light on the image, so as to ensure the imaging quality. Please refer to Figure 23 , which shows the three-dimensional view and its partial enlarged schematic diagram of the optical element of the imaging lens according to the third embodiment of the present invention. It can be seen that the gate trace 322 is disposed on the connecting surface 320. Among them, an absorbing material can be further disposed on the surface of the gate trace, and the absorbing material can be a material that can reduce light reflection, such as dark ink, light-curing coating, acrylic pigment, carbon black, metal oxide, etc., but the present invention is not limited thereto.

[0080] In another embodiment, the outer peripheral portion may further include a reducing surface and a gate trace. Among them, the reducing surface may be adjacent to the connecting surface and closer to the optical axis than the connecting surface. Among them, the gate trace may be disposed on the reducing surface, and the air barrier can be disposed at least on the gate trace; thereby, the air barrier recesses from the surface of the gate trace towards the interior of the optical element, and the reflection path of stray light on the gate trace can be blocked by the air barrier, avoiding the influence of stray light on the image, so as to ensure the imaging quality. Among them, the area of the reducing surface is Ar, and the total area occupied by the gate trace and the air barrier on the reducing surface is Ag, which can satisfy the following condition: 0.2 < Ag / Ar ≤ 1; thereby, the reflection of stray light on the reducing surface can be reduced. Among them, the air barrier can extend from the gate trace on the reducing surface to other areas of the reducing surface or extend to the connecting surface; thereby, it helps to reduce the reflection of stray light. Please refer to Figure 3, is a three-dimensional and partially enlarged schematic diagram illustrating the optical elements of the imaging lens according to the first embodiment of the present invention. Figure 3 As shown, in some embodiments, the air barrier 123 is in a grid shape, and the setting range of the air barrier 123 covers the injection mark 122 and further extends to the surrounding reduction surface 121. Figure 7 and Figure 15 , are schematic side views of optical elements of imaging lenses according to the first embodiment and the second embodiment of the present invention, respectively. Figure 7 and Figure 15 Different examples are used to clearly illustrate the area ratio relationship among the injection mark 122 , the air barrier 123 and the reduced surface 121 , and the area ratio relationship among the injection mark 222 , the air barrier 223 and the reduced surface 221 .

[0081] The areas of the reduced surface, injection mark, and air barrier can be determined through image analysis to determine the proportion of the area covered by the injection mark and air barrier on the reduced surface. For example, since the original reduced surface is flat, its glossiness will be different from the uneven injection mark and air barrier, which can be used to calculate the covered area. However, the present invention is not limited to the above analysis method. For example, area calculation can also be performed using instruments that can analyze surface properties such as roughness.

[0082] The concave width of each air barrier is Wab, which can meet the following conditions: 0.008 mm ≤ Wab ≤ 0.07 mm. In this way, the reflection path of stray light can be effectively blocked. When the concave profile of the air barrier is linear, the concave width refers to the line width; when the concave profile of the air barrier is point-shaped, the concave width refers to the diameter of the point. The following conditions can also be met: 0.012 mm ≤ Wab ≤ 0.05 mm. Please refer to Figure 6 , is a schematic diagram illustrating the parameter Wab according to the first embodiment of the present invention. Regarding the width of the air barrier's depression, the linear or dotted depressions may be difficult to discern due to the unevenness of the surface on which they are located. For example, a straight line may become slightly curved, while a circular shape may become elliptical. In this case, the width of the air barrier's depression can be measured or calculated from an area where the contour is more clearly discernible, such as by identifying the depression's contour on a relatively flat reduced surface.

[0083] The air barriers can be arranged regularly along a first direction. This helps to control the production quality. Figure 6 and Figure 9, are schematic side views and partial magnifications of optical elements of different implementations of the imaging lens according to the first embodiment of the present invention. Figure 6 and Figure 9 It can be seen that the air barriers 123 are regularly arranged along the first direction D1 , and the air barriers 123 a are regularly arranged along the first direction D1 .

[0084] The concave profile of the air barrier can be a curved profile. This helps to block stray light incident from different directions and reduce the process. The minimum angle formed by the curved profile of the air barrier is θab, which can meet the following conditions: 50 degrees < θab < 180 degrees. Please refer to Figure 12 and Figure 14 , respectively depicting a perspective view and a partially enlarged schematic view of the optical elements of the imaging lens according to the second embodiment of the present invention, and a side view and a partially enlarged schematic view thereof. It can be seen that the concave contour of the air barrier 223 is a curved contour. In addition, Figure 14 FIG. 4 is a schematic diagram showing the parameter θab according to the second embodiment of the present invention.

[0085] The air barriers can be further arranged regularly along a second direction different from the first direction; thereby, the air barriers are arranged along at least two directions, which helps to block stray light incident from different directions. The extension paths of at least two of the air barriers can be staggered with each other; thereby, it helps to block stray light incident from different directions. The staggered extension directions of the air barriers can form a grid-like or diamond-like texture, but the present invention is not limited to this. Please refer to Figure 6 and Figure 24 , are schematic side views and partial magnifications of optical elements of different implementations of the imaging lenses according to the first and third embodiments of the present invention, respectively. It can be seen that the air barriers 123 are regularly arranged along the first direction D1 and the second direction D2, and the air barriers 323 are regularly arranged along the first direction D1 and the second direction D2. In addition, by Figure 6 It can be seen that the extension paths of the air barriers 123 are intertwined with each other, so that the air barriers 123 are in a grid shape.

[0086] The concave profile of the air barrier may be a linear concave profile, and the linear concave profile may be formed by a plurality of continuous dot-shaped concave profiles. For example, please refer to Figure 25, is a three-dimensional and partial enlarged schematic diagram showing an optical element according to an embodiment of the present invention focusing a laser on a feeding mark to process and form an air barrier. Regarding the formation method of the air barrier 123, a laser can be focused on a point on the surface of the outer peripheral portion 12 (such as the connection surface 120, the reduction surface 121, and / or the feeding mark 122 on the reduction surface 121) to melt and burn out a dot-shaped air barrier 123 on the surface of the outer peripheral portion 12. For example, a dot-matrix laser is performed along the path indicated by the arrow in Figure 25 . When the dot matrix arrangement is dense enough, the contour of the air barrier 123 will approximate a continuous path. It should be noted that Figure 25 the feeding mark 122 is shown as a cuboid for convenience of illustration only, and the present invention is not limited to the shape of the feeding mark. For example, in actual situations, the feeding mark may have uneven cutting, resulting in a surface with undulations rather than a flat surface.

[0087] The sweeping angle of the feeding mark centered on the optical axis is θg, which can satisfy the following condition: 14 degrees < θg < 45 degrees. Thereby, it helps to improve the injection molding quality of the optical element. Please refer to Figure 5 , which is a schematic diagram showing the parameter θg in the first embodiment of the present invention.

[0088] The maximum outer diameter of the optical element in the direction perpendicular to the optical axis is D, and the shortest distance between the feeding mark and the exit surface in the direction perpendicular to the optical axis is H, which can satisfy the following condition: 0.01 < H / D < 0.2. Thereby, it helps to miniaturize the design of the lens. Please refer to Figure 5 , which is a schematic diagram showing the parameters D and H in the first embodiment of the present invention.

[0089] The thickness of the outer peripheral portion in the direction parallel to the optical axis is ET, and the maximum outer diameter of the optical element in the direction perpendicular to the optical axis is D, which can satisfy the following condition: 1.6 < D / ET < 8.8. Thereby, it helps to improve the optical refractive power. Please refer to Figure 4 and Figure 5 , which are respectively schematic diagrams showing the parameters ET and D in the first embodiment of the present invention. Figure 4 The cross-section of the air barrier 123 in

[0090] is U-shaped, but the present invention is not limited thereto. For example, according to different laser types and parameter settings, the cross-section of the air barrier can also be V-shaped or trapezoidal, etc., and the present invention is not limited thereto.

[0091] The optical portion may further include a reflecting surface, and the imaging light changes its traveling direction through the reflecting surface. Please refer to Figure 22, which is a cross-sectional view and a partially enlarged schematic view of an imaging lens according to a third embodiment of the present invention. It can be seen that the optical element 30 is a prism having a reflective surface 313, wherein the reflective surface 313 can be located between the incident surface 311 and the exit surface 312 on the optical path, and the imaging light changes its traveling direction through the reflective surface 313.

[0092] The utility model provides an electronic device, which includes the aforementioned imaging lens.

[0093] The various technical features of the imaging lens of the present invention described above can be configured in combination to achieve corresponding effects.

[0094] Based on the above implementation manner, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0095] <First embodiment>

[0096] Please refer to Figures 1 to 7 ,in Figure 1 A perspective schematic diagram of an imaging lens according to a first embodiment of the present invention is shown. Figure 2 Draw Figure 1 The cross section of the imaging lens and its partial enlarged schematic diagram, Figure 3 Draw Figure 1 A three-dimensional diagram of the optical elements of the imaging lens and a partial magnified schematic diagram, Figure 4 Draw Figure 3 The cross section of the optical element and its partial enlarged schematic diagram, Figure 5 Draw Figure 3 The image side viewing angle of the optical element and its partial enlarged schematic diagram, Figure 6 Draw Figure 3 A side view of the optical element and a partially enlarged schematic diagram thereof, and Figure 7 Draw Figure 3 Schematic side view of the optical element.

[0097] The imaging lens 1 includes, in order from the object side to the image side, a reflective prism RP, a first lens group LG1, a second lens group LG2, and an imaging surface IMG. The reflective prism RP is used to deflect the optical path. The second lens group LG2 includes, in order from the object side to the image side, a lens LE and an optical element 10.

[0098] The optical element 10 is a light-transmitting element, and in this embodiment, is specifically an optical lens. The optical element 10 includes an optical portion 11 and a peripheral portion 12. The optical portion 11 includes an incident surface 111 and an exit surface 112. Imaging light enters the optical element 10 through the incident surface 111 and exits the optical element 10 through the exit surface 112, where it is imaged on the imaging surface IMG. In this embodiment, at least one of the incident surface 111 and the exit surface 112 is non-circular.

[0099] The peripheral portion 12 is further away from the optical axis OL of the imaging lens 1 than the optical portion 11, and includes a plurality of connecting surfaces 120, a reduction surface 121, a fillet mark 122, and a plurality of air barriers 123. The connecting surface 120 connects the incident surface 111 and the exit surface 112. The reduction surface 121 is adjacent to the connecting surface 120 and is closer to the optical axis OL than the adjacent connecting surface 120. The fillet mark 122 is disposed on the reduction surface 121, and the air barrier 123 is disposed on the fillet mark 122 on the reduction surface 121 and extends from the fillet mark 122 on the reduction surface 121 to other areas of the reduction surface 121. The air barrier 123 is recessed from the surface on which it is disposed (e.g., the surface of the fillet mark 122 and the reduction surface 121) toward the optical axis OL.

[0100] The concave contours of the air barriers 123 are linear. More specifically, these concave contours are straight lines formed by a continuous series of multiple dot-shaped depressions. The air barriers 123 are regularly arranged along a first direction D1 and a second direction D2 that is different from the first direction D1. The extension paths of some air barriers 123 intersect with the extension paths of other air barriers 123. In this embodiment, the air barriers 123 are arranged in a grid pattern, and the range of the air barriers 123 covers the injection mark 122 and further extends to the surrounding reduced surface 121.

[0101] like Figure 6 As shown, the concave width of each air barrier 123 is Wab, which satisfies the following condition: Wab=0.02 millimeters (mm).

[0102] Please refer to Figure 7 The area of ​​the reduced surface 121 is Ar, and the total area occupied by the injection mark 122 and the air barrier 123 on the reduced surface 121 is Ag, which satisfies the following conditions: Ar = 2.78 mm 2 ;Ag=1.57mm 2 ; and Ag / Ar=0.565.

[0103] like Figure 5 As shown, the sweep angle of the injection mark 122 centered at the optical axis OL is θg, which satisfies the following condition: θg=30.1 degrees.

[0104] like Figure 5 As shown, the maximum outer diameter of the optical element 10 in the direction perpendicular to the optical axis OL is D, and the shortest distance between the injection mark 122 and the exit surface 112 in the direction perpendicular to the optical axis OL is H, which satisfies the following conditions: D = 5.5 mm; H = 0.24 mm; and H / D = 0.04.

[0105] like Figure 4 and Figure 5 As shown, the thickness of the outer peripheral portion 12 in a direction parallel to the optical axis OL is ET, and the maximum outer diameter of the optical element 10 in a direction perpendicular to the optical axis OL is D, which satisfies the following conditions: ET = 1.56 mm; D = 5.5 mm; and D / ET = 3.53.

[0106] The present invention is not limited to the concave profile of the air barrier 123. For example, please refer to Figure 8 and Figure 9 ,in Figure 8 A three-dimensional and partially enlarged schematic diagram of an optical element according to another embodiment of the present invention is shown, and Figure 9 Draw Figure 8 The optical element 10a in another embodiment of the present invention is similar to the aforementioned optical element 10, and the same or similar reference numerals are used to represent the same elements. The functions and effects of each element are the same as those described above and will not be repeated here.

[0107] like Figure 8 and Figure 9 As shown, the air barrier 123a is disposed on the injection mark 122a on the reduced surface 121a and extends from the injection mark 122a on the reduced surface 121a to other areas of the reduced surface 121a. The air barrier 123a is recessed from the surface where it is disposed toward the optical axis OL.

[0108] The concave profiles of the air barriers 123a are linear, more specifically, zigzag-shaped curved concave profiles. These linear concave profiles can be formed by a series of multiple dot-shaped concave profiles. The air barriers 123a are regularly arranged along the first direction D1, and the range of the air barriers 123a encompasses the injection mark 122a and further extends to the surrounding reduced surface 121a.

[0109] like Figure 9 As shown, the distance between two adjacent air barriers 123a is T1, which satisfies the following condition: T1 = 0.04 mm.

[0110] <Second embodiment>

[0111] Please refer to Figures 10 to 15 ,in Figure 10 A perspective schematic diagram of an imaging lens according to a second embodiment of the present invention is shown. Figure 11 Draw Figure 10 The cross section of the imaging lens and its partial enlarged schematic diagram, Figure 12 Draw Figure 10 A three-dimensional diagram of the optical elements of the imaging lens and a partial magnified schematic diagram, Figure 13 Draw Figure 12The image side viewing angle of the optical element and its partial enlarged schematic diagram, Figure 14 Draw Figure 12 A side view of the optical element and a partially enlarged schematic diagram thereof, and Figure 15 Draw Figure 12 Schematic side view of the optical element.

[0112] The imaging lens 2 includes a plurality of lenses LE, an optical element 20 and an imaging surface IMG in sequence from the object side to the image side along the optical path.

[0113] The optical element 20 is a light-transmitting element, and in this embodiment, is specifically an optical lens. The optical element 20 includes an optical portion 21 and a peripheral portion 22. The optical portion 21 includes an incident surface 211 and an exit surface 212. Imaging light enters the optical element 20 through the incident surface 211 and exits the optical element 20 through the exit surface 212, where it is imaged on the imaging surface IMG.

[0114] The peripheral portion 22 is further away from the optical axis OL of the imaging lens 2 than the optical portion 21, and includes a plurality of connecting surfaces 220, a reduction surface 221, a fillet mark 222, and a plurality of air barriers 223. The connecting surface 220 connects the incident surface 211 and the exit surface 212. The reduction surface 221 is adjacent to the connecting surface 220 and is closer to the optical axis OL than the adjacent connecting surface 220. The fillet mark 222 is disposed on the reduction surface 221, and the air barrier 223 is disposed on the fillet mark 222 on the reduction surface 221 and extends from the fillet mark 222 on the reduction surface 221 to other areas of the reduction surface 221. The air barrier 223 is recessed from the surface on which it is disposed (e.g., the surface of the fillet mark 222 and the reduction surface 221) toward the optical axis OL.

[0115] The concave profile of the air barrier 223 is linear, more specifically, a curved profile, and these linear concave profiles can be formed by a plurality of continuous dot-shaped concave portions. The air barrier 223 is regularly arranged along a first direction D1.

[0116] like Figure 14 As shown, the concave width of each air barrier 223 is Wab, which satisfies the following condition: Wab=0.015 mm.

[0117] Please refer to Figure 15 The area of ​​the reduced surface 221 is Ar, and the total area occupied by the injection mark 222 and the air barrier 223 on the reduced surface 221 is Ag, which satisfies the following conditions: Ar = 0.762 mm 2 ;Ag=0.267mm 2 ; and Ag / Ar=0.35.

[0118] like Figure 13As shown, the sweep angle of the injection mark 222 centered at the optical axis OL is θg, which satisfies the following condition: θg=14 degrees.

[0119] like Figure 13 As shown, the maximum outer diameter of the optical element 20 in the direction perpendicular to the optical axis OL is D, and the shortest distance between the injection mark 222 and the exit surface 212 in the direction perpendicular to the optical axis OL is H, which satisfies the following conditions: D = 8 mm; H = 0.25 mm; and H / D = 0.03.

[0120] like Figure 14 As shown, the minimum angle formed by the curved profile of the air barrier 223 is θab, which satisfies the following condition: θab=113.5 degrees.

[0121] The present invention is not limited to the concave profile of air barrier 223 described above. Five further embodiments of the concave profile of the air barrier of the present invention are provided below. Air barriers 223a, 223b, 223c, 223d, and 223e in these embodiments are similar to air barrier 223 described above, and identical components are designated by identical or similar reference numerals. The functions and effects of each component are identical or similar to those described above and are not further detailed here.

[0122] For example, see Figure 16 is a partially enlarged schematic diagram illustrating the periphery of an optical element and its air barrier according to another embodiment of the present invention. In one embodiment of the present invention, the concave width of each air barrier 223a is Wab, which satisfies the following condition: Wab = 0.015 mm. Furthermore, the minimum angle formed by the curved profile of the air barrier 223a is θab, which satisfies the following condition: θab = 70 degrees.

[0123] For another example, please refer to Figure 17 is a partially enlarged schematic diagram illustrating the periphery of an optical element and its air barrier according to another embodiment of the present invention. In one embodiment of the present invention, the concave width of each air barrier 223b is Wab, which satisfies the following condition: Wab = 0.015 mm. Furthermore, the minimum angle formed by the curved profile of the air barrier 223b is θab, which satisfies the following condition: θab = 90 degrees.

[0124] For another example, please refer to Figure 18is a partially enlarged schematic diagram illustrating the periphery of an optical element and its air barrier according to another embodiment of the present invention. In one embodiment of the present invention, the concave width of each air barrier 223c is Wab, which satisfies the following condition: Wab = 0.015 mm. Furthermore, the minimum angle formed by the curved profile of the air barrier 223c is θab, which satisfies the following condition: θab = 121 degrees.

[0125] For another example, please refer to Figure 19 is a partially enlarged schematic diagram illustrating the periphery of an optical element and its air barrier according to another embodiment of the present invention. In one embodiment of the present invention, the concave width of each air barrier 223d is Wab, which satisfies the following condition: Wab = 0.015 mm. Furthermore, the minimum angle formed by the curved profile of the air barrier 223d is θab, which satisfies the following condition: θab = 160 degrees.

[0126] For another example, please refer to Figure 20 , is a partially enlarged schematic diagram illustrating the periphery of an optical element and its air barrier according to another embodiment of the present invention. In one embodiment of the present invention, the recessed width of each air barrier 223e is non-uniform, and the recessed width of each air barrier 223e is Wab, which satisfies the following condition: 0.015mm≤Wab≤0.03mm. The maximum recessed width of each air barrier 223e is 0.03mm, and the minimum recessed width of each air barrier 223e is 0.015mm. Furthermore, the minimum angle formed by the curved profile of the air barrier 223e is θab, which satisfies the following condition: θab = 160 degrees.

[0127] <Third embodiment>

[0128] Please refer to Figures 21 to 24 ,in Figure 21 A perspective schematic diagram of an imaging lens according to a third embodiment of the present invention is shown. Figure 22 Draw Figure 21 The cross section of the imaging lens and its partial enlarged schematic diagram, Figure 23 Draw Figure 21 A three-dimensional diagram of the optical elements of the imaging lens and a partially enlarged schematic diagram thereof, and Figure 24 Draw Figure 23 A side view of the optical element and a partially enlarged schematic diagram.

[0129] The imaging lens 3 includes a lens group LG, an optical element 30 and an imaging surface IMG in sequence from the object side to the image side along the optical path.

[0130] The optical element 30 is a light-transmitting element, and in this embodiment, is specifically an optical reflective prism used to deflect the optical path. The optical element 30 includes an optical portion 31 and a peripheral portion 32. The optical portion 31 includes, in order from the object side to the image side, an incident surface 311, multiple reflective surfaces 313, and an exit surface 312. Imaging light enters the optical element 30 from the incident surface 311, is redirected by the reflective surfaces 313, and exits the optical element 30 from the exit surface 312, forming an image on the imaging surface IMG.

[0131] The peripheral portion 32 is further away from the optical axis OL of the imaging lens 3 than the optical portion 31 and includes a plurality of connecting surfaces 320, a filler mark 322, and a plurality of air barriers 323. The connecting surface 320 connects the incident surface 311, the reflective surface 313, and the exit surface 312. The filler mark 322 is disposed on one of the connecting surfaces 320, and the air barriers 323 are disposed on the filler mark 322 on the connecting surface 320 and extend from the filler mark 322 on the connecting surface 320 to other areas of the connecting surface 320. The air barriers 323 are recessed from the surfaces on which they are disposed (e.g., the surface of the filler mark 322 and the connecting surface 320) toward the optical axis OL.

[0132] The air barriers 323 have a dot-shaped recessed profile, more specifically, a circular dot-shaped recessed profile. The air barriers 323 are regularly arranged along a first direction D1 and a second direction D2 that is different from the first direction D1. In this embodiment, the air barriers 323 extend beyond the injection mark 322 and further onto the surrounding connection surface 320.

[0133] like Figure 24 As shown, the concave width of each air barrier 323 is Wab, which satisfies the following condition: Wab=0.06 millimeters (mm).

[0134] <Fourth embodiment>

[0135] Please refer to Figure 26 and Figure 27 ,in Figure 26 A schematic perspective view of one side of an electronic device according to a fourth embodiment of the present invention is shown, and Figure 27 Draw Figure 26 A three-dimensional schematic diagram of the other side of the electronic device.

[0136] In this embodiment, the electronic device 400 is a smart phone and includes a plurality of imaging lenses, a flash module 401 , a focus assist module 402 , an image signal processor 403 , a display module (user interface) 404 , and an image software processor (not shown).

[0137] These imaging lenses include an ultra-wide-angle imaging lens 100a, a high-pixel imaging lens 100b, a telephoto imaging lens 100c, and a telephoto imaging lens 100d. The high-pixel imaging lens 100b, for example, includes the imaging lens 1 of the first embodiment and an electronic photosensitive element (not shown), the telephoto imaging lens 100c, for example, includes the imaging lens 2 of the second embodiment and an electronic photosensitive element (not shown), and the telephoto imaging lens 100d, for example, includes the imaging lens 3 of the third embodiment and an electronic photosensitive element (not shown). These electronic photosensitive elements are respectively disposed on the imaging surfaces IMG of the imaging lenses 1, 2, and 3. Furthermore, the ultra-wide-angle imaging lens 100a may also include the imaging lens of the present invention, but the present invention is not limited thereto.

[0138] The ultra-wide-angle imaging lens 100 a has the function of accommodating multiple views. Figure 28 FIG. 1 is a schematic diagram illustrating an image captured by an ultra-wide-angle imaging lens 100 a .

[0139] The high-pixel imaging lens 100b has the functions of high resolution and low distortion. The high-pixel imaging lens 100b can further capture Figure 28 Part of the image. Figure 29 FIG. 1 is a schematic diagram illustrating an image captured by a high-pixel imaging lens 100 b .

[0140] The telephoto imaging lenses 100c and 100d have a high magnification function. The telephoto imaging lenses 100c and 100d can further capture Figure 29 Part of the image. Figure 30 A schematic diagram of capturing an image with telephoto imaging lenses 100c and 100d is shown. The maximum field of view (FOV) of the imaging lens corresponds to Figure 30 perspective.

[0141] When a user photographs a subject, the electronic device 400 utilizes the ultra-wide-angle imaging lens 100a, the high-pixel imaging lens 100b, the telephoto imaging lens 100c, or the telephoto imaging lens 100d to focus and capture the image, activates the flash module 401 for fill light, and uses the object distance information of the subject provided by the focus assist module 402 for rapid focusing. Furthermore, the image signal processor 403 performs image optimization processing to further enhance the image quality produced by the imaging lens while providing a zoom function. The focus assist module 402 may utilize an infrared or laser focus assist system to achieve rapid focusing. The display module 404 may utilize a touch screen with a touch function, allowing manual adjustment of the shooting angle, thereby switching between different imaging lenses, and cooperating with the diverse functions of the image software processor for image capture and image processing (or a physical capture button may be used for capture). The image processed by the image software processor may be displayed on the display module 404.

[0142] <Fifth embodiment>

[0143] Please refer to Figure 31 , is a schematic three-dimensional diagram illustrating one side of an electronic device according to a fifth embodiment of the present invention.

[0144] In this embodiment, electronic device 500 is a smartphone. Electronic device 500 includes imaging lens 200, imaging lens 200a, imaging lens 200b, imaging lens 200c, imaging lens 200d, imaging lens 200e, imaging lens 200f, imaging lens 200g, imaging lens 200h, a flash module 501, an image signal processor, a display device, and an image software processor (not shown). Imaging lens 200, imaging lens 200a, imaging lens 200b, imaging lens 200c, imaging lens 200d, imaging lens 200e, imaging lens 200f, imaging lens 200g, and imaging lens 200h are all disposed on the same side of electronic device 500, while the display device is disposed on the other side of electronic device 500. Imaging lens 200c, for example, includes the imaging lens 1 of the first embodiment described above and an electronic photosensitive element (not shown), with the electronic photosensitive element disposed on imaging surface IMG of imaging lens 1. The imaging lenses 200 , 200 a , 200 b , 200 d , 200 e , 200 f , 200 g , and 200 h may also include the imaging lenses of the present invention, but the present invention is not limited thereto.

[0145] Imaging lens 200 is an ultra-wide-angle imaging lens, imaging lens 200a is a telephoto imaging lens, imaging lens 200b is a telephoto imaging lens, imaging lens 200c is a telephoto imaging lens, imaging lens 200d is a telephoto imaging lens, imaging lens 200e is a wide-angle imaging lens, imaging lens 200f is a wide-angle imaging lens, imaging lens 200g is an ultra-wide-angle imaging lens, and imaging lens 200h is a time-of-flight (ToF) imaging lens. Imaging lenses 200, 200a, 200b, 200c, 200d, 200e, 200f, and 200g of this embodiment have different viewing angles, allowing electronic device 500 to provide different magnifications to achieve an optical zoom photography effect. Furthermore, imaging lens 200a and imaging lens 200b are telephoto imaging lenses equipped with a light deflection element. Additionally, imaging lens 200h can obtain depth information of the image. The electronic device 500 described above includes multiple imaging lenses 200, 200a, 200b, 200c, 200d, 200e, 200f, 200g, and 200h, but the number and configuration of the imaging lenses are not intended to limit the present invention. When a user photographs a subject, the electronic device 500 utilizes imaging lens 200, 200a, 200b, 200c, 200d, 200e, 200f, 200g, or 200h to focus light and capture the image. The flash module 501 is activated for fill light, and subsequent processing is performed in a manner similar to the aforementioned embodiments, which will not be further described here.

[0146] <Sixth embodiment>

[0147] Please refer to Figures 32 to 34 ,in Figure 32 FIG2 is a perspective diagram of an electronic device according to a sixth embodiment of the present invention. Figure 33 Draw Figure 32 A side view schematic diagram of an electronic device, and Figure 34 Draw Figure 32 A schematic top view of an electronic device.

[0148] In this embodiment, the electronic device 600 is a car and includes a plurality of automotive imaging lenses 300 , each of which includes the imaging lens of the present invention, which can be applied to, for example, a panoramic driving assistance system, a driving recorder, and a reverse imaging device.

[0149] like Figure 32As shown, imaging lenses 300 can be positioned around the vehicle, for example, to capture images of the surrounding area, helping to identify road conditions outside the vehicle and thereby enabling automated assisted driving. Furthermore, an image software processor can combine these images into a panoramic view, providing images of the driver's blind spots, allowing the driver to monitor the surrounding area and facilitate driving and parking.

[0150] like Figure 33 As shown, the imaging lens 300 can be respectively disposed below the left and right rearview mirrors, wherein the viewing angle of the imaging lens 300 can be 40 degrees to 90 degrees for capturing image information within the left and right lanes.

[0151] like Figure 34 As shown, the imaging lens 300 can also be set, for example, below the left and right rearview mirrors and inside the front and rear windshields, thereby helping the driver to obtain external space information outside the cockpit, providing more perspectives to reduce blind spots and improve driving safety.

[0152] The imaging lens of the present invention is not limited to applications in smartphones, panoramic driving assistance systems, driving recorders, and reverse imaging devices. The imaging lens can also be applied to various mobile focus systems as needed, and features both excellent aberration correction and good imaging quality. For example, the imaging lens can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of the present invention and do not limit the scope of application of the imaging lens of the present invention.

[0153] While the present invention has been disclosed above with reference to the aforementioned embodiments, these embodiments are not intended to limit the present invention. Any modifications and alterations that do not depart from the spirit and scope of the present invention are within the scope of patent protection of the present invention. Please refer to the appended claims for the scope of protection defined by the present invention.

Claims

1. An imaging lens, characterized in that: Include: An optical element, wherein the optical element is a light-transmitting element and comprises: An optical unit, comprising: an incident surface, through which an imaging light enters the optical element; and an exit surface, through which the imaging light leaves the optical element; and a peripheral portion, further away from an optical axis of the imaging lens than the optical portion, and comprising: At least one connecting surface connecting the incident surface and the exit surface; a reduction surface adjacent to the at least one connecting surface and closer to the optical axis than the at least one connecting surface; a material injection mark, provided on the reduction surface; as well as A plurality of air barriers are provided at least at the injection mark and are recessed toward the optical axis; The concave profile of the air barrier includes at least one of a dot shape and a line shape, and the concave width of each air barrier is Wab, which satisfies the following conditions: 0.008mm≤Wab≤0.07mm.

2. The imaging lens according to claim 1, wherein: The air barriers are regularly arranged along a first direction.

3. The imaging lens according to claim 2, wherein: The concave profile of the air barrier is a curved profile.

4. The imaging lens according to claim 3, wherein: The minimum angle formed by the curved profile of the air barrier is θab, which satisfies the following conditions: 50 degrees <θab <180 degrees.

5. The imaging lens according to claim 2, wherein: The air barriers are further regularly arranged along a second direction different from the first direction.

6. The imaging lens according to claim 5, wherein: The extension paths of at least two of the air barriers intersect with each other.

7. The imaging lens according to claim 1, wherein: The concave width of each of the air barriers is Wab, which satisfies the following conditions: 0.012mm≤Wab≤0.05mm.

8. The imaging lens according to claim 1, wherein: The concave profile of the air barrier is a linear concave profile, and the linear concave profile is formed by a plurality of continuous dot-shaped concavities.

9. The imaging lens according to claim 1, wherein: The air barrier extends from the injection mark on the reduction surface to other areas of the reduction surface or to the at least one connecting surface.

10. The imaging lens according to claim 1, wherein: The area of ​​the reduced surface is Ar, and the total area occupied by the injection mark and the air barrier on the reduced surface is Ag, which satisfies the following conditions: 0.2 <Ag / Ar≤1。 11. The imaging lens according to claim 1, wherein: The maximum outer diameter of the optical element in a direction perpendicular to the optical axis is D, and the shortest distance between the injection mark and the exit surface in a direction perpendicular to the optical axis is H, which satisfies the following conditions: 0.01 <H / D<0.2。 12. The imaging lens according to claim 1, wherein: The thickness of the outer peripheral portion in a direction parallel to the optical axis is ET, and the maximum outer diameter of the optical element in a direction perpendicular to the optical axis is D, which satisfies the following conditions: 1.6 <D / ET<8.8。 13. The imaging lens according to claim 1, wherein: At least one of the incident surface and the exit surface is non-circular.

14. The imaging lens according to claim 1, wherein: The sweep angle of the injection mark centered on the optical axis is θg, which satisfies the following conditions: 14 degrees ≤ θg ≤ 45 degrees.

15. The imaging lens according to claim 1, wherein: The optical part further includes a reflective surface, and the imaging light changes its traveling direction through the reflective surface.

16. An electronic device, characterized in that: Include: The imaging lens according to claim 1.

17. An imaging lens, characterized in that: Include: An optical element, wherein the optical element is a light-transmitting element and comprises: An optical unit, comprising: an incident surface, through which an imaging light enters the optical element; and an exit surface, through which the imaging light leaves the optical element; and a peripheral portion, further away from an optical axis of the imaging lens than the optical portion, and comprising: At least one connecting surface connecting the incident surface and the exit surface; as well as a plurality of air barriers disposed on at least a portion of the surface of the outer peripheral portion, wherein the air barriers are recessed from at least a portion of the surface toward the optical axis; The concave contour of the air barrier includes at least one of a dot shape and a line shape.

18. The imaging lens according to claim 17, wherein: The air barriers are regularly arranged along a first direction.

19. The imaging lens according to claim 18, wherein: The concave profile of the air barrier is a curved profile.

20. The imaging lens according to claim 19, wherein: The minimum angle formed by the curved profile of the air barrier is θab, which satisfies the following conditions: 50 degrees <θab <180 degrees.

21. The imaging lens according to claim 18, wherein: The air barriers are further regularly arranged along a second direction different from the first direction.

22. The imaging lens according to claim 21, wherein: The extension paths of at least two of the air barriers intersect with each other.

23. The imaging lens according to claim 18, wherein: The concave width of each of the air barriers is Wab, which satisfies the following conditions: 0.008mm≤Wab≤0.07mm.

24. The imaging lens according to claim 23, wherein: The concave width of each of the air barriers is Wab, which satisfies the following conditions: 0.012mm≤Wab≤0.05mm.

25. The imaging lens according to claim 17, wherein: The concave profile of the air barrier is a linear concave profile, and the linear concave profile is formed by a plurality of continuous dot-shaped concavities.

26. The imaging lens according to claim 17, wherein: The outer peripheral portion further includes a reduction surface, the reduction surface is adjacent to the at least one connecting surface and is closer to the optical axis than the at least one connecting surface, and the air barrier is disposed on the reduction surface.

27. The imaging lens according to claim 17, wherein: The outer peripheral portion further includes an injection mark, the injection mark is arranged on the at least one connecting surface, and the air barrier is arranged on the at least one connecting surface.

28. The imaging lens according to claim 27, wherein: The sweep angle of the injection mark centered on the optical axis is θg, which satisfies the following conditions: 14 degrees <θg < 45 degrees.

29. The imaging lens according to claim 27, wherein: The maximum outer diameter of the optical element in a direction perpendicular to the optical axis is D, and the shortest distance between the injection mark and the exit surface in a direction perpendicular to the optical axis is H, which satisfies the following conditions: 0.01 <H / D<0.2。 30. The imaging lens according to claim 29, wherein: The thickness of the outer peripheral portion in a direction parallel to the optical axis is ET, and the maximum outer diameter of the optical element in a direction perpendicular to the optical axis is D, which satisfies the following conditions: 1.6 <D / ET<8.8。 31. The imaging lens according to claim 30, wherein: At least one of the incident surface and the exit surface is non-circular.

32. The imaging lens according to claim 17, wherein: The optical part further includes a reflective surface, and the imaging light changes its traveling direction through the reflective surface.

33. An electronic device, characterized in that: Include: The imaging lens according to claim 17.

Images