Sunshade, imaging lens and electronic device

Abstract

An optical shade, an imaging lens and an electronic device are disclosed. The optical shade includes a central opening and a plurality of optical structures. A central axis passes through the central opening. The optical structures are disposed around an inner circumferential surface of the central opening. The optical structures taper from the central opening toward the central axis. The optical structures define an outer circle and an inner circle. The inner circle ends of the optical structures near the central axis are connected to the inner circle. The outer circle ends of the optical structures far from the central axis are connected to the outer circle. A light transmission portion is between the inner circle and the optical structures. A light blocking portion is between the outer circle and the optical structures. Thus, the optical shade can resist noise in harsh environmental conditions and avoid excessive light blocking to restore scene appearance.

Description

Technical Field

[0001] This disclosure relates to a light shield and an imaging lens, and more particularly to a light shield and an imaging lens used in a portable electronic device. Background Technology

[0002] In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablet computers, which have become ubiquitous in modern life. As a result, imaging lenses and their light shields mounted on portable electronic devices have also flourished. However, with the advancement of technology, users have increasingly higher requirements for the quality of light shields.

[0003] Specifically, the multiple light-blocking structures of a light-blocking plate can reduce noise interference from imaging lenses in strong light source scenarios. Increasing the protrusion height of the light-blocking structure can improve the imaging lens's noise resistance in strong light source scenarios. However, this can also easily lead to excessive light blocking of the imaging lens, resulting in a decrease in image quality. Therefore, developing a light-blocking plate that can improve excessive light blocking and has noise resistance capabilities in strong light source scenarios has become an important and urgent problem for the industry. Summary of the Invention

[0004] This disclosure provides a light-shielding plate, an imaging lens, and an electronic device that can reproduce the appearance of a scene under harsh environmental conditions through the light-shielding structure of the light-shielding plate.

[0005] According to one embodiment of this disclosure, a light-shielding sheet is provided, comprising a central opening and a plurality of light-shielding structures. A central axis passes through the central opening. The light-shielding structures are disposed around an inner circumferential surface of the central opening, and gradually taper from the central opening towards the central axis. The light-shielding structures define a circumscribed circle and an inscribed circle, wherein the ends of the plurality of inscribed circles of the light-shielding structures near the central axis are connected to the inscribed circle, and the ends of the plurality of circumscribed circles of the light-shielding structures away from the central axis are connected to the circumscribed circle. A light-transmitting portion is formed between the inscribed circle and each light-shielding structure, and a light-shielding portion is formed between the circumscribed circle and each light-shielding structure. The light-transmitting portion of each light-shielding structure may include at least one arc segment, and the center of curvature of the arc segment is located inside the inscribed circle. The radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, the area of ​​the circumscribed circle minus the area of ​​the inscribed circle is AA, the area of ​​the light-transmitting part is A1, and the area of ​​the light-blocking part is A2. They satisfy the following conditions: 34 μm ≤ Ro-Ri ≤ 157 μm; AA = A1+A2; and 0.9 ≤ A1 / A2 ≤ 5.4.

[0006] According to the embodiments described above, the light-shielding sheet and the light-shielding structure can be integrally formed.

[0007] According to the embodiments described above, the surface of the light-shielding sheet may include an matting layer.

[0008] According to the embodiment described above, the light-shielding sheet has an inscribed circle radius of Ri and an circumscribed circle radius of Ro, which can satisfy the following conditions: 46 μm ≤ Ro-Ri ≤ 112 μm.

[0009] According to the embodiment described above, the radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, and the distance between adjacent ends of the inscribed circle is L, which can satisfy the following condition: 0.27 ≤ (Ro-Ri) / L ≤ 1.32.

[0010] According to the embodiment described above, the number of light-shielding structures is N, which can satisfy the following condition: 28 ≤ N ≤ 93.

[0011] According to the embodiment described above, the area of ​​the light-transmitting part is A1 and the area of ​​the light-blocking part is A2, which can satisfy the following condition: 1.05 ≤ A1 / A2 ≤ 3.4.

[0012] According to one embodiment of this disclosure, an imaging lens is provided, comprising a light-shielding plate as described in the previous embodiment and at least two optical lenses. The optical lenses and the light-shielding plate are disposed within a lens barrel along a central axis. The imaging lens has a first viewing angle, FOV1, which satisfies the following condition: 18 degrees ≤ FOV1 ≤ 51 degrees.

[0013] According to one embodiment of this disclosure, an electronic device is provided, comprising at least two imaging lenses. The imaging lenses have different viewing angles, one of which is a first imaging lens, and the first imaging lens has a first viewing angle. The first imaging lens includes at least one light-shielding plate, and the light-shielding plate includes a central opening and a plurality of light-shielding structures. A central axis of the first imaging lens passes through the central opening. Light-shielding structures are disposed around an inner circumferential surface of the central opening, and the light-shielding structures gradually taper from the central opening towards the central axis. The light-shielding structures define a circumcircle and an incircle, wherein the ends of the plurality of incircle segments of the light-shielding structures near the central axis are connected to the incircle, and the ends of the plurality of circumcircle segments of the light-shielding structures away from the central axis are connected to the circumcircle. A light-transmitting portion of each light-shielding structure may include at least one arc segment, and the center of curvature of the arc segment is located inside the incircle. The first-person perspective is FOV1, with the radius of the inscribed circle being Ri and the radius of the circumscribed circle being Ro. These conditions satisfy the following: 18 degrees ≤ FOV1 ≤ 51 degrees; and 34 μm ≤ Ro-Ri ≤ 157 μm.

[0014] According to the electronic device of the embodiment described above, one of the imaging lenses may be a second imaging lens, and the second imaging lens has a second viewing angle, which is FOV2, and can satisfy the following conditions: 68 degrees ≤ FOV2 ≤ 175 degrees.

[0015] According to the electronic device of the embodiment described above, the number of imaging lenses may be at least three, one of which may be a third imaging lens, and the third imaging lens has a third field of view, which is FOV3, and can satisfy the following conditions: 5 degrees ≤ FOV3 ≤ 22 degrees.

[0016] According to the electronic device of the embodiment described above, the first imaging lens may further include at least two optical lenses. One of the optical lenses may have a maximum outer diameter, the number of light-shielding plates may be multiple, and the central opening of one of the light-shielding plates may have a minimum inner diameter. The maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin, which may satisfy the following condition: 0.29 ≤ φmin / φMax ≤ 0.79.

[0017] According to the electronic device of the embodiment described above, the first imaging lens may further include at least two optical lenses. One of the optical lenses may have a maximum outer diameter. The maximum outer diameter of the one of the optical lenses is φMax, and the effective focal length of the first imaging lens is EFL, which may satisfy the following condition: 0.8 ≤ EFL / φMax ≤ 4.2.

[0018] The electronic device according to the embodiment described above, wherein the first viewing angle is FOV1, can satisfy the following conditions: 22 degrees ≤ FOV1 ≤ 40 degrees.

[0019] In the electronic device according to the embodiments described above, the light-shielding sheet and the light-shielding structure can be integrally formed.

[0020] In the electronic device according to the embodiments described above, the surface of the light-shielding sheet may include an matting layer.

[0021] The electronic device according to the embodiments described above, wherein the radius of the inscribed circle is Ri and the radius of the circumscribed circle is Ro, can satisfy the following condition: 46 μm ≤ Ro-Ri ≤ 112 μm.

[0022] In the electronic device according to the embodiment described above, the radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, and the distance between two adjacent ends of the inscribed circle is L, which can satisfy the following condition: 0.27 ≤ (Ro-Ri) / L ≤ 1.32.

[0023] In the electronic device according to the embodiments described above, the number of light-shielding structures is N, which can satisfy the following condition: 28 ≤ N ≤ 93.

[0024] According to the electronic device of the embodiment described above, the area between the inscribed circle and each light-shielding structure can be a light-transmitting portion, and the area between the circumscribed circle and each light-shielding structure can be a light-shielding portion. The area of ​​the circumscribed circle minus the area of ​​the inscribed circle is AA, the area of ​​the light-transmitting portion is A1, and the area of ​​the light-shielding portion is A2, which satisfies the following conditions: AA = A1 + A2; and 0.9 ≤ A1 / A2 ≤ 5.4. Furthermore, it satisfies the following condition: 1.05 ≤ A1 / A2 ≤ 3.4. Attached Figure Description

[0025] Figure 1A A schematic diagram of an imaging lens according to a first embodiment of the present invention is shown;

[0026] Figure 1B Drawing according to Figure 1A A schematic diagram of the light-shielding sheet in the first embodiment;

[0027] Figure 1C Drawing according to Figure 1B A partially enlarged view of the light-shielding sheet in the first embodiment;

[0028] Figure 2A A schematic diagram of an imaging lens according to a second embodiment of the present invention is shown;

[0029] Figure 2B Drawing according to Figure 2A A schematic diagram of the light-shielding sheet in the second embodiment;

[0030] Figure 2C Drawing according to Figure 2B Enlarged view of the light-shielding sheet in the second embodiment;

[0031] Figure 3A A schematic diagram of an imaging lens according to a third embodiment of the present invention is shown;

[0032] Figure 3B Drawing according to Figure 3A A schematic diagram of the light-shielding sheet in the third embodiment;

[0033] Figure 3C Drawing according to Figure 3B A partially enlarged view of the light-shielding sheet in the third embodiment;

[0034] Figure 4A A schematic diagram of an imaging lens according to a fourth embodiment of the present invention is shown;

[0035] Figure 4B Drawing according to Figure 4A A schematic diagram of the light-shielding sheet in the fourth embodiment;

[0036] Figure 4C Drawing according to Figure 4B Enlarged view of a portion of the light-shielding sheet in the fourth embodiment;

[0037] Figure 5A A schematic diagram of an imaging lens according to a fifth embodiment of the present invention is shown;

[0038] Figure 5B Drawing according to Figure 5A A schematic diagram of the light-shielding sheet in the fifth embodiment;

[0039] Figure 5C Drawing according to Figure 5B Enlarged view of a portion of the light-shielding sheet in the fifth embodiment;

[0040] Figure 6A A schematic diagram of an imaging lens according to a sixth embodiment of the present invention is shown;

[0041] Figure 6B Drawing according to Figure 6A A schematic diagram of the light-shielding sheet in the sixth embodiment;

[0042] Figure 6C Drawing according to Figure 6B Enlarged view of a portion of the light-shielding sheet in the sixth embodiment;

[0043] Figure 7A A schematic diagram of the electronic device according to the seventh embodiment of this disclosure; and

[0044] Figure 7B Drawing according to Figure 7A Block diagram of the electronic device in the seventh embodiment.

[0045] [Symbol Explanation]

[0046] 100, 200, 300, 400, 500, 600: Imaging lenses

[0047] 111,112,113,114,211,212,213,214,215,216,311,312,313,314,315,411,412,413,414,415,511,512,513,514,515,516,611,612,613: Light-blocking sheet

[0048] 121,122,123,124,125,221,222,223,224,225,321,322,323,324,325,326,421,422,423,424,425,426,521,522,523,524,525,526,621,622,623,624,625: Optical lenses

[0049] 130, 230, 330, 430, 530, 630: Lens tube

[0050] 141,241,341,441,541,641,647: Center opening

[0051] 142,242,342,442,542,642: Light-shielding structure

[0052] 143,243,343,443,543,643: Circumcircle

[0053] 144,244,344,444,544,644: inscribed circle

[0054] 145, 245, 345, 445, 545, 645: Light-transmitting part

[0055] 146,246,346,446,546,646:Light shielding part

[0056] 151,251,351,451,551,651: Circumscribed end face

[0057] 152,252,352,452,552,652: Inscribed round end

[0058] 70: Electronic devices

[0059] 711: Telephoto Lens

[0060] 712: Ultra-wide-angle lens

[0061] 713: Super Telephoto Lens

[0062] 714: Wide-angle main lens

[0063] 72: Lens cover plate

[0064] 73: Electronic photosensitive element

[0065] 74: User Interface

[0066] 75: Imaging signal processing element

[0067] 76: Optical anti-shake component

[0068] 77: Sensing element

[0069] 78: Flash module

[0070] 79: Focusing Assist Module

[0071] C: Center of curvature

[0072] O: Central axis

[0073] Ri: Radius of the inscribed circle

[0074] Ro: Radius of the circumcircle

[0075] AA: Area of ​​the circumcircle minus the area of ​​the inscribed circle

[0076] A1: Area of ​​the light-transmitting part

[0077] A2: Area of ​​the light-shielding part

[0078] L: Distance between two adjacent points at the end of the inscribed circle

[0079] φMax: The maximum outer diameter of one of the optical lenses.

[0080] φmin: The minimum inner diameter of the center opening of one of the light-shielding plates.

[0081] R: Radius of curvature

[0082] N: Number of light-blocking structures

[0083] FOV1: First-person perspective

[0084] FOV2: Second Perspective

[0085] FOV3: Third-Person Perspective

[0086] EFL: Effective focal length of the first imaging lens Detailed Implementation

[0087] This disclosure provides a light-shielding sheet comprising a central opening and a plurality of light-shielding structures. A central axis passes through the central opening, and the light-shielding structures are arranged around an inner circumferential surface of the central opening. The light-shielding structures gradually taper from the central opening towards the central axis and define a circumscribed circle and an inscribed circle. The ends of the plurality of inscribed circles of the light-shielding structures near the central axis are connected to the inscribed circle, and the ends of the plurality of circumscribed circles of the light-shielding structures away from the central axis are connected to the circumscribed circle. A light-transmitting portion is formed between the inscribed circle and each light-shielding structure, and a light-shielding portion is formed between the circumscribed circle and each light-shielding structure. The radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, the area of ​​the circumscribed circle minus the area of ​​the inscribed circle is AA, the area of ​​the light-transmitting portion is A1, and the area of ​​the light-shielding portion is A2, which satisfy the following conditions: 34 μm ≤ Ro-Ri ≤ 157 μm; AA = A1+A2; and 0.9 ≤ A1 / A2 ≤ 5.4. Specifically, the light-shielding plate disclosed herein improves image quality and enhances noise reduction by controlling the area ratio of the light-shielding part to the light-transmitting part, thus solving the problem of excessive light blocking caused by the excessively high protrusion height of conventional light-shielding plates. This allows for faithful reproduction of the scene's appearance and low-noise imaging even under harsh environmental conditions. Specifically, harsh environmental conditions can include scenes facing strong light sources or scenes with low ambient light levels.

[0088] Furthermore, the light-shielding structure can be composed of straight or curved segments, and the inner and outer circular ends of the light-shielding structure can each be an endpoint, or they can each be a curved segment coinciding with the inner or outer circle. This prevents excessive light blocking by the light-shielding structure, thereby improving image quality.

[0089] The light-shielding sheet and the light-shielding structure can be molded as a single piece, thereby increasing manufacturing efficiency and making it suitable for mass production.

[0090] The surface of the light-shielding sheet may include a matting layer. Furthermore, the material of the light-shielding sheet can be metal or composite material. Metal materials may undergo sandblasting, ink coating, or film plating, while composite materials may be composed of multiple layers stacked together, such as a strip made by sandwiching plastic layers between two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet in strong light source environments.

[0091] Each light-transmitting portion of the light-shielding structure may include at least one arc segment, and the center of curvature of the arc segment is located inside the inscribed circle. The concave arc of the light-shielding structure facing the inscribed circle increases the area of ​​the light-transmitting portion, thereby improving the relative illumination.

[0092] The radius of the inscribed circle is Ri, and the radius of the circumscribed circle is Ro, which can satisfy the following condition: 46 μm ≤ Ro-Ri ≤ 112 μm. This further enhances the light-blocking effect of the light-blocking structure.

[0093] The radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, and the distance between adjacent ends of the inscribed circle is L. This distance satisfies the following condition: 0.27 ≤ (Ro-Ri) / L ≤ 1.32. This prevents adjacent shading structures from being too close together, thus avoiding excessive shading.

[0094] The number of light-shielding structures is N, which can satisfy the following condition: 28 ≤ N ≤ 93. This can prevent the light-shielding sheet from over-shielding and maintain noise resistance in strong light source scenes.

[0095] The area of ​​the light-transmitting part is A1, and the area of ​​the light-blocking part is A2, which satisfies the following condition: 1.05 ≤ A1 / A2 ≤ 3.4. This further improves image quality and reduces noise interference in both strong and low light environments.

[0096] The various technical features of the light-shielding sheet disclosed herein can be combined and configured to achieve the corresponding effects.

[0097] This disclosure provides an imaging lens comprising the aforementioned light-shielding plate and at least two optical lenses, wherein the optical lenses and the light-shielding plate are disposed within a lens barrel along a central axis. The imaging lens has a first field of view, FOV1, which satisfies the following condition: 18 degrees ≤ FOV1 ≤ 51 degrees. Excessive light shading can be reduced through the imaging lens with a small field of view.

[0098] This disclosure provides an electronic device comprising at least two imaging lenses having different viewing angles. One of the imaging lenses is a first imaging lens, and the first imaging lens has a first viewing angle. The first imaging lens includes at least one light-shielding plate, wherein the light-shielding plate includes a central opening and a plurality of light-shielding structures. A central axis of the first imaging lens passes through the central opening, and the light-shielding structures are disposed around an inner circumferential surface of the central opening. The light-shielding structures taper from the central opening toward the central axis and define a circumcircle and an incircle. The ends of the plurality of incircles of the light-shielding structures near the central axis are connected to the incircle, and the ends of the plurality of circumcircles of the light-shielding structures away from the central axis are connected to the circumcircle. The first viewing angle is FOV1, the radius of the incircle is Ri, and the radius of the circumcircle is Ro, which satisfy the following conditions: 18 degrees ≤ FOV1 ≤ 51 degrees; and 34 μm ≤ Ro-Ri ≤ 157 μm. Specifically, the first imaging lens may be a telephoto lens with a narrow viewing angle. The first imaging lens has the characteristic of a small angle of light incidence, which can further reduce excessive shading.

[0099] Furthermore, the electronic device includes imaging lenses with different viewing angles. When one of them has a specific imaging angle, and through the light-blocking structure of the light-blocking plate, the imaging lens can achieve a similar level of image quality when switching scenes, even in more demanding shooting conditions. Therefore, when using shooting functions with continuously changing viewing angles, it is less likely to cause drops in image quality or a sense of lag, and a better shooting experience can be maintained.

[0100] Furthermore, the light-shielding structure can be composed of straight or curved segments, and the inner and outer circular ends of the light-shielding structure can each be an endpoint, or they can each be curved segments coinciding with the inner or outer circle. This prevents excessive light blocking by the light-shielding structure, thereby improving image quality. Moreover, it can faithfully reproduce the scene's appearance under harsh environmental conditions to obtain images with low noise interference. Specifically, harsh environmental conditions can be scenes facing strong light sources or scenes with low ambient light levels.

[0101] The light-shielding sheet and the light-shielding structure can be molded as a single piece, thereby increasing manufacturing efficiency and making it suitable for mass production.

[0102] The surface of the light-shielding sheet may include an matting layer. This further enhances the noise reduction capability of the light-shielding sheet in strong light source scenarios.

[0103] Each light-transmitting portion of the light-shielding structure may include at least one arc segment, and the center of curvature of the arc segment is located inside the inscribed circle. The concave arc of the light-shielding structure facing the inscribed circle increases the area of ​​the light-transmitting portion, thereby improving the relative illumination.

[0104] The other of the imaging lenses can be a second imaging lens, and the second imaging lens has a second field of view, FOV2, which can satisfy the following condition: 68 degrees ≤ FOV2 ≤ 175 degrees. Specifically, the second imaging lens can be a wide-angle lens or an ultra-wide-angle lens. Furthermore, the electronic device can achieve optical zoom by switching between imaging lenses with different field of view.

[0105] The number of imaging lenses can be at least three, one of which can be a third imaging lens, and the third imaging lens has a third field of view, FOV3, which can satisfy the following conditions: 5 degrees ≤ FOV3 ≤ 22 degrees. Specifically, the third imaging lens can be an ultra-telephoto telephoto lens. Furthermore, the electronic device can achieve optical zoom by switching between imaging lenses with different field of view.

[0106] The first imaging lens may further include at least two optical lenses, one of which has the largest outer diameter. There may be multiple light-blocking plates, and one of the light-blocking plates has a central opening with the smallest inner diameter. The largest outer diameter of one of the optical lenses is φMax, and the smallest inner diameter of the central opening of one of the light-blocking plates is φmin, which satisfies the following condition: 0.29 ≤ φmin / φMax ≤ 0.79. This results in better image quality.

[0107] The maximum outer diameter of one of the optical lenses is φMax, and the effective focal length of the first imaging lens is EFL, which can satisfy the following condition: 0.8 ≤ EFL / φMax ≤ 4.2. This allows for the attainment of better image quality.

[0108] The first-person perspective is FOV1, which satisfies the following condition: 22 degrees ≤ FOV1 ≤ 40 degrees. This further mitigates the problem of excessive shading.

[0109] The radius of the inscribed circle is Ri, and the radius of the circumscribed circle is Ro, which can satisfy the following condition: 46 μm ≤ Ro-Ri ≤ 112 μm. This further enhances the light-blocking effect of the light-blocking structure.

[0110] The radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, and the distance between adjacent ends of the inscribed circle is L. This distance satisfies the following condition: 0.27 ≤ (Ro-Ri) / L ≤ 1.32. This prevents adjacent shading structures from being too close together, thus avoiding excessive shading.

[0111] The number of light-blocking structures is N, which satisfies the following condition: 28 ≤ N ≤ 93. This prevents excessive light blocking by the light-blocking structures and maintains the noise resistance of the first imaging lens in strong light source scenes.

[0112] The area between the inscribed circle and each light-shielding structure can form a light-transmitting portion, and the area between the circumscribed circle and each light-shielding structure can form a light-shielding portion. The area of ​​the circumscribed circle minus the area of ​​the inscribed circle is AA, the area of ​​the light-transmitting portion is A1, and the area of ​​the light-shielding portion is A2. This satisfies the following conditions: AA = A1 + A2; and 0.9 ≤ A1 / A2 ≤ 5.4. This achieves the effect of eliminating stray light and controls the area of ​​the light-shielding portion to avoid excessive light blocking. Furthermore, it satisfies the following condition: 1.05 ≤ A1 / A2 ≤ 3.4. This further improves image quality and reduces noise interference in both strong and low light environments.

[0113] The various technical features in the electronic device disclosed herein can be combined and configured to achieve the corresponding effects.

[0114] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0115] <First Embodiment>

[0116] Please refer to Figure 1A It illustrates a schematic diagram of the imaging lens 100 according to the first embodiment of the present invention. Figure 1A It is known that the imaging lens 100 includes at least one light shield, at least two optical lenses and a lens barrel 130, wherein the optical lenses and the light shield are disposed in the lens barrel 130 along a central axis O of the imaging lens 100.

[0117] In detail, the imaging lens 100, from the object side to the image side, includes an optical lens 121, a light-blocking plate 111, an optical lens 122, a light-blocking plate 112, an optical lens 123, a light-blocking plate 113, an optical lens 124, a light-blocking plate 114, and an optical lens 125. It must be noted that the number, structure, surface shape, and other optical characteristics of the optical lenses can be configured according to different imaging requirements and are not limited thereto.

[0118] Please refer to Figure 1B and Figure 1C ,in Figure 1B Drawing according to Figure 1A A schematic diagram of the light-shielding sheet 112 in the first embodiment. Figure 1C Drawing according to Figure 1B A partially enlarged view of the light-shielding sheet 112 in the first embodiment. (From...) Figure 1B and Figure 1CIt is understood that the light-shielding sheet 112 includes a central opening 141 and multiple light-shielding structures 142, wherein the central axis O passes through the central opening 141, and the light-shielding structures 142 are arranged around an inner circumferential surface of the central opening 141, and the light-shielding structures 142 gradually taper from the central opening 141 toward the central axis O. Specifically, the light-shielding structures 142 are composed of arc segments.

[0119] The light-shielding structure 142 defines a circumcircle 143 and an inscribed circle 144. The plurality of inscribed circle ends 152 of the light-shielding structure 142 near the central axis O are connected to the inscribed circle 144, and the plurality of circumcircle ends 151 of the light-shielding structure 142 away from the central axis O are connected to the circumcircle 143. Furthermore, the inscribed circle end 152 is an arc segment coinciding with the inscribed circle 144, while the circumcircle end 151 is an endpoint tangent to the circumcircle 143.

[0120] A light-transmitting portion 145 is formed between the inner circle 144 and each light-shielding structure 142, and a light-shielding portion 146 is formed between the outer circle 143 and each light-shielding structure 142.

[0121] By controlling the area ratio of the light-transmitting part 145 to the light-blocking part 146, excessive light blocking by the light-blocking structure 142 can be avoided, thereby improving the imaging quality of the imaging lens 100. Furthermore, it can faithfully reproduce the scene appearance under harsh environmental conditions to obtain imaging with low noise interference. Specifically, harsh environmental conditions can be scenes facing strong light sources or scenes with low ambient light.

[0122] The light-shielding sheet 112 and the light-shielding structure 142 can be integrally molded to increase manufacturing efficiency and are suitable for mass production.

[0123] The surface of the light-shielding sheet 112 may include a matting layer. Furthermore, the material of the light-shielding sheet 112 may be a metal or a composite material. The metal material may be treated with sandblasting, ink coating, or film coating, while the composite material may be composed of multiple layers of stacked materials, such as a strip made by sandwiching a plastic material layer with two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet 112 in strong light source scenarios.

[0124] Depend on Figure 1C It is understood that the light-transmitting portion 145 of each light-shielding structure 142 includes at least one arc segment, and the curvature center C of the arc segment is located inside the inscribed circle 144. In the first embodiment, the number of arc segments in the light-transmitting portion 145 of each light-shielding structure 142 is one, and the arc segment is located between the outer end 151 and the inner end 152 of the inscribed circle. The concave arc of the light-shielding structure 142 towards the interior of the inscribed circle 144 can increase the area of ​​the light-transmitting portion 145, thereby improving the relative illumination.

[0125] Depend on Figure 1A and Figure 1BIt can be seen that the radius of the inscribed circle 144 is Ri, and the radius of the circumscribed circle 143 is Ro; the area of ​​the circumscribed circle 143 minus the area of ​​the inscribed circle 144 is AA, the area of ​​the light-transmitting part 145 is A1, and the area of ​​the light-shielding part 146 is A2; the distance between two adjacent parts in the end 152 of the inscribed circle is L; one of the optical lenses (optical lens 125 in the first embodiment) has a maximum outer diameter, and the central opening of one of the light-shielding plates (central opening 141 of light-shielding plate 112 in the first embodiment) has a minimum inner diameter; the maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin; the number of light-shielding structures 142 is N; the imaging lens 100 has a first viewing angle, which is FOV1; the effective focal length of the imaging lens 100 is EFL, and the parameters satisfy the conditions in Table 1 below.

[0126]

[0127] <Second Embodiment>

[0128] Please refer to Figure 2A The diagram illustrates an imaging lens 200 according to a second embodiment of the present invention. Figure 2A It is known that the imaging lens 200 includes at least one light shield, at least two optical lenses and a lens barrel 230, wherein the optical lenses and the light shield are disposed within the lens barrel 230 along a central axis O of the imaging lens 200.

[0129] In detail, the imaging lens 200, from the object side to the image side, includes optical lens 221, light-blocking plate 211, optical lens 222, light-blocking plate 212, optical lens 223, light-blocking plate 213, light-blocking plate 214, optical lens 224, light-blocking plate 215, optical lens 225, and light-blocking plate 216. It must be noted that the number, structure, surface shape, and other optical characteristics of the optical lenses can be configured according to different imaging requirements and are not limited thereto.

[0130] Please refer to Figure 2B and Figure 2C ,in Figure 2B Drawing according to Figure 2A A schematic diagram of the light-shielding sheet 212 in the second embodiment. Figure 2C Drawing according to Figure 2B A partially enlarged view of the light-shielding sheet 212 in the second embodiment. (From...) Figure 2B and Figure 2C It is understood that the light-shielding sheet 212 includes a central opening 241 and multiple light-shielding structures 242, wherein the central axis O passes through the central opening 241, and the light-shielding structures 242 are arranged around an inner circumferential surface of the central opening 241, and the light-shielding structures 242 gradually taper from the central opening 241 toward the central axis O. Specifically, the light-shielding structure 242 is composed of a combination of arc segments and straight segments.

[0131] The light-shielding structure 242 defines a circumcircle 243 and an inscribed circle 244, wherein the plurality of inscribed circle ends 252 of the light-shielding structure 242 near the central axis O are connected to the inscribed circle 244, and the plurality of circumcircle ends 251 of the light-shielding structure 242 away from the central axis O are connected to the circumcircle 243. Furthermore, both the inscribed circle ends 252 and the circumcircle ends 251 are endpoints.

[0132] A light-transmitting portion 245 is formed between the inner circle 244 and each light-shielding structure 242, and a light-shielding portion 246 is formed between the outer circle 243 and each light-shielding structure 242.

[0133] By controlling the area ratio of the light-transmitting part 245 to the light-blocking part 246, excessive light blocking by the light-blocking structure 242 can be avoided, thereby improving the imaging quality of the imaging lens 200. Furthermore, it can faithfully reproduce the scene appearance under harsh environmental conditions to obtain low-noise interference imaging. Specifically, harsh environmental conditions can be scenes facing a strong light source or scenes with low ambient light.

[0134] The light-shielding sheet 212 and the light-shielding structure 242 can be integrally molded to increase manufacturing efficiency and are suitable for mass production.

[0135] The surface of the light-shielding sheet 212 may include a matting layer. Furthermore, the material of the light-shielding sheet 212 may be a metal or a composite material. The metal material may be treated with sandblasting, ink coating, or film coating, while the composite material may be composed of multiple layers of stacked materials, such as a strip made by sandwiching a plastic material layer with two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet 212 in strong light source scenarios.

[0136] Depend on Figure 2C It is understood that the light-transmitting portion 245 of each light-shielding structure 242 includes at least one arc segment, and the curvature center C of the arc segment is located inside the inscribed circle 244. In the second embodiment, the number of arc segments in the light-transmitting portion 245 of each light-shielding structure 242 is one, and the arc segment is located between the outer end 251 and the inner end 252 of the inscribed circle. The concave arc of the light-shielding structure 242 facing the interior of the inscribed circle 244 can increase the area of ​​the light-transmitting portion 245, thereby improving the relative illumination.

[0137] Depend on Figure 2A and Figure 2BIt can be seen that the radius of the inscribed circle 244 is Ri, and the radius of the circumscribed circle 243 is Ro; the area of ​​the circumscribed circle 243 minus the area of ​​the inscribed circle 244 is AA, the area of ​​the light-transmitting part 245 is A1, and the area of ​​the light-shielding part 246 is A2; the distance between two adjacent parts in the end 252 of the inscribed circle is L; one of the optical lenses (optical lens 221 in the second embodiment) has a maximum outer diameter, and the central opening of one of the light-shielding plates (central opening 241 of light-shielding plate 212 in the second embodiment) has a minimum inner diameter; the maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin; the number of light-shielding structures 242 is N; the imaging lens 200 has a first viewing angle, which is FOV1; the effective focal length of the imaging lens 200 is EFL, and the parameters satisfy the conditions in Table 2 below.

[0138]

[0139] <Third Embodiment>

[0140] Please refer to Figure 3A The diagram illustrates an imaging lens 300 according to a third embodiment of the present invention. Figure 3A It is known that the imaging lens 300 includes at least one light shield, at least two optical lenses and a lens barrel 330, wherein the optical lenses and the light shield are disposed in the lens barrel 330 along a central axis O of the imaging lens 300.

[0141] In detail, the imaging lens 300, from the object side to the image side, includes optical lenses 321, 322, 311, 323, 312, 324, 313, 314, 325, 315, and 326. It must be noted that the number, structure, surface shape, and other optical characteristics of the optical lenses can be configured according to different imaging requirements and are not limited thereto.

[0142] Please refer to Figure 3B and Figure 3C ,in Figure 3B Drawing according to Figure 3A A schematic diagram of the light-shielding sheet 312 in the third embodiment. Figure 3C Drawing according to Figure 3B A partially enlarged view of the light-shielding sheet 312 in the third embodiment. Figure 3B and Figure 3C It can be seen that the light-shielding sheet 312 includes a central opening 341 and multiple light-shielding structures 342, wherein the central axis O passes through the central opening 341, and the light-shielding structures 342 are arranged around an inner circumferential surface of the central opening 341, and the light-shielding structures 342 gradually taper from the central opening 341 toward the central axis O. Specifically, the light-shielding structures 342 are composed of straight line segments.

[0143] The light-shielding structure 342 defines a circumcircle 343 and an inscribed circle 344, wherein the plurality of inscribed circle ends 352 of the light-shielding structure 342 near the central axis O are connected to the inscribed circle 344, and the plurality of circumcircle ends 351 of the light-shielding structure 342 away from the central axis O are connected to the circumcircle 343. Furthermore, both the inscribed circle ends 352 and the circumcircle ends 351 are endpoints.

[0144] A light-transmitting portion 345 is formed between the inner circle 344 and each light-shielding structure 342, and a light-shielding portion 346 is formed between the outer circle 343 and each light-shielding structure 342.

[0145] By controlling the area ratio of the light-transmitting part 345 to the light-blocking part 346, excessive light blocking by the light-blocking structure 342 can be avoided, thereby improving the imaging quality of the imaging lens 300. Furthermore, it can faithfully reproduce the scene appearance under harsh environmental conditions to obtain low-noise interference imaging. Specifically, harsh environmental conditions can be scenes facing strong light sources or scenes with low ambient light.

[0146] The light-shielding sheet 312 and the light-shielding structure 342 can be integrally molded to increase manufacturing efficiency and are suitable for mass production.

[0147] The surface of the light-shielding sheet 312 may include a matting layer. Furthermore, the material of the light-shielding sheet 312 may be a metal or a composite material. The metal material may be treated with sandblasting, ink coating, or film coating, while the composite material may be composed of multiple layers of stacked materials, such as a strip made by sandwiching a plastic material layer with two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet 312 in strong light source scenarios.

[0148] Depend on Figure 3A and Figure 3B It can be seen that the radius of the inscribed circle 344 is Ri, and the radius of the circumscribed circle 343 is Ro; the area of ​​the circumscribed circle 343 minus the area of ​​the inscribed circle 344 is AA, the area of ​​the light-transmitting part 345 is A1, and the area of ​​the light-shielding part 346 is A2; the distance between two adjacent parts in the end 352 of the inscribed circle is L; one of the optical lenses (optical lens 326 in the third embodiment) has the largest outer diameter, the central opening of one of the light-shielding plates (central opening 341 of light-shielding plate 312 in the third embodiment) has the smallest inner diameter, the maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin; the number of light-shielding structures 342 is N; the imaging lens 300 has a first viewing angle, the first viewing angle is FOV1; the effective focal length of the imaging lens 300 is EFL, and the parameters satisfy the conditions in Table 3 below.

[0149]

[0150] <Fourth Embodiment>

[0151] Please refer to Figure 4A The diagram illustrates an imaging lens 400 according to a fourth embodiment of the present invention. Figure 4A It is known that the imaging lens 400 includes at least one light shield, at least two optical lenses and a lens barrel 430, wherein the optical lenses and the light shield are disposed in the lens barrel 430 along a central axis O of the imaging lens 400.

[0152] In detail, the imaging lens 400, from the object side to the image side, includes optical lenses 421, 422, 411, 423, 412, 424, 413, 425, 414, 415, and 426. It must be noted that the number, structure, surface shape, and other optical characteristics of the optical lenses can be configured according to different imaging requirements and are not limited thereto.

[0153] Please refer to Figure 4B and Figure 4C ,in Figure 4B Drawing according to Figure 4A A schematic diagram of the light-shielding sheet 412 in the fourth embodiment. Figure 4C Drawing according to Figure 4B A partially enlarged view of the light-shielding sheet 412 in the fourth embodiment. Figure 4B and Figure 4C It is understood that the light-shielding sheet 412 includes a central opening 441 and multiple light-shielding structures 442, wherein the central axis O passes through the central opening 441, and the light-shielding structures 442 are arranged around an inner circumferential surface of the central opening 441, and the light-shielding structures 442 gradually taper from the central opening 441 toward the central axis O. Specifically, the light-shielding structures 442 are composed of arc segments.

[0154] The light-shielding structure 442 defines a circumcircle 443 and an inscribed circle 444. The inscribed circle ends 452 of the light-shielding structure 442 near the central axis O are connected to the inscribed circle 444, and the circumcircle ends 451 of the light-shielding structure 442 away from the central axis O are connected to the circumcircle 443. Furthermore, the inscribed circle end 452 is an endpoint, and the circumcircle end 451 is an endpoint tangent to the circumcircle 443.

[0155] A light-transmitting portion 445 is formed between the inner circle 444 and each light-blocking structure 442, and a light-blocking portion 446 is formed between the outer circle 443 and each light-blocking structure 442.

[0156] By controlling the area ratio of the light-transmitting part 445 to the light-blocking part 446, excessive light blocking by the light-blocking structure 442 can be avoided, thereby improving the imaging quality of the imaging lens 400. Furthermore, it can faithfully reproduce the scene appearance under harsh environmental conditions to obtain low-noise imaging. Specifically, harsh environmental conditions can be scenes facing strong light sources or scenes with low ambient light.

[0157] The light-shielding sheet 412 and the light-shielding structure 442 can be integrally molded to increase manufacturing efficiency and are suitable for mass production.

[0158] The surface of the light-shielding sheet 412 may include a matting layer. Furthermore, the material of the light-shielding sheet 412 may be a metal or a composite material. The metal material may be treated with sandblasting, ink coating, or film coating, while the composite material may be composed of multiple layers of stacked materials, such as a strip made by sandwiching a plastic material layer with two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet 412 in strong light source scenarios.

[0159] Depend on Figure 4C It is known that the light-transmitting portion 445 of each light-shielding structure 442 includes at least one arc segment, and the curvature center C of the arc segment is located inside the inscribed circle 444. In the fourth embodiment, the number of arc segments in the light-transmitting portion 445 of each light-shielding structure 442 is two, and the arc segments are all located between the inner circle end points 452, wherein one of the arc segments is the outer circle end point 451, which is tangent to the outer circle 443. The concave arc of the light-shielding structure 442 towards the inner circle 444 can increase the area of ​​the light-transmitting portion 445, thereby improving the relative illumination.

[0160] Depend on Figure 4A and Figure 4B It can be seen that the radius of the inscribed circle 444 is Ri, and the radius of the circumscribed circle 443 is Ro; the area of ​​the circumscribed circle 443 minus the area of ​​the inscribed circle 444 is AA, the area of ​​the light-transmitting part 445 is A1, and the area of ​​the light-shielding part 446 is A2; the distance between two adjacent parts in the end 452 of the inscribed circle is L; one of the optical lenses (optical lens 426 in the fourth embodiment) has the largest outer diameter, the central opening of one of the light-shielding plates (central opening 441 of light-shielding plate 412 in the fourth embodiment) has the smallest inner diameter, the maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin; the number of light-shielding structures 442 is N; the imaging lens 400 has a first viewing angle, the first viewing angle is FOV1; the effective focal length of the imaging lens 400 is EFL, and the parameters satisfy the conditions in Table 4 below.

[0161]

[0162] <Fifth Embodiment>

[0163] Please refer to Figure 5A The diagram illustrates an imaging lens 500 according to a fifth embodiment of the present invention. Figure 5A It is known that the imaging lens 500 includes at least one light shield, at least two optical lenses and a lens barrel 530, wherein the optical lenses and the light shield are disposed in the lens barrel 530 along a central axis O of the imaging lens 500.

[0164] In detail, the imaging lens 500, from the object side to the image side, includes optical lens 521, light-blocking plate 511, optical lens 522, light-blocking plate 512, optical lens 523, light-blocking plate 513, optical lens 524, light-blocking plate 514, light-blocking plate 515, optical lens 525, light-blocking plate 516, and optical lens 526. It must be noted that the number, structure, surface shape, and other optical characteristics of the optical lenses can be configured according to different imaging requirements and are not limited thereto.

[0165] Please refer to Figure 5B and Figure 5C ,in Figure 5B Drawing according to Figure 5A A schematic diagram of the light-shielding sheet 513 in the fifth embodiment. Figure 5C Drawing according to Figure 5B A partially enlarged view of the light-shielding sheet 513 in the fifth embodiment. Figure 5B and Figure 5C It is understood that the light-shielding sheet 513 includes a central opening 541 and multiple light-shielding structures 542, wherein the central axis O passes through the central opening 541, and the light-shielding structures 542 are arranged around an inner circumferential surface of the central opening 541, and the light-shielding structures 542 gradually taper from the central opening 541 toward the central axis O. Specifically, the light-shielding structures 542 are composed of straight line segments.

[0166] The light-shielding structure 542 defines a circumcircle 543 and an inscribed circle 544. The inscribed circle ends 552 of the light-shielding structure 542 near the central axis O are connected to the inscribed circle 544, and the circumcircle ends 551 of the light-shielding structure 542 away from the central axis O are connected to the circumcircle 543. Further, both the inscribed circle ends 552 and the circumcircle ends 551 are endpoints. Specifically, each inscribed circle end 552 and circumcircle end 551 is provided with a fillet (not shown in the figure), and the radius of curvature of the fillet is R, both of which are 0.025 mm.

[0167] A light-transmitting part 545 is formed between the inner circle 544 and each light-shielding structure 542, and a light-shielding part 546 is formed between the outer circle 543 and each light-shielding structure 542.

[0168] By controlling the area ratio of the light-transmitting part 545 to the light-blocking part 546, excessive light blocking by the light-blocking structure 542 can be avoided, thereby improving the imaging quality of the imaging lens 500. Furthermore, it can faithfully reproduce the scene's appearance under harsh environmental conditions to obtain images with low noise interference. Specifically, harsh environmental conditions can be scenes facing a strong light source or scenes with low ambient light.

[0169] The light-shielding sheet 513 and the light-shielding structure 542 can be integrally molded to increase manufacturing efficiency and are suitable for mass production.

[0170] The surface of the light-shielding sheet 513 may include a matting layer. Furthermore, the material of the light-shielding sheet 513 may be a metal or a composite material. The metal material may be treated with sandblasting, ink coating, or film coating, while the composite material may be composed of multiple layers of stacked materials, such as a strip made by sandwiching a plastic material layer with two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet 513 in strong light source scenarios.

[0171] Depend on Figure 5A and Figure 5B It can be seen that the radius of the inscribed circle 544 is Ri, and the radius of the circumscribed circle 543 is Ro; the area of ​​the circumscribed circle 543 minus the area of ​​the inscribed circle 544 is AA, the area of ​​the light-transmitting part 545 is A1, and the area of ​​the light-shielding part 546 is A2; the distance between two adjacent parts in the end 552 of the inscribed circle is L; one of the optical lenses (optical lens 526 in the fifth embodiment) has the largest outer diameter, the central opening of one of the light-shielding plates (central opening 541 of light-shielding plate 513 in the fifth embodiment) has the smallest inner diameter, the maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin; the number of light-shielding structures 542 is N; the imaging lens 500 has a first viewing angle, the first viewing angle is FOV1; the effective focal length of the imaging lens 500 is EFL, and the parameters satisfy the conditions in Table 5 below.

[0172]

[0173] <Sixth Embodiment>

[0174] Please refer to Figure 6A The diagram illustrates an imaging lens 600 according to a sixth embodiment of the present invention. Figure 6A It is known that the imaging lens 600 includes at least one light shield, at least two optical lenses and a lens barrel 630, wherein the optical lenses and the light shield are disposed in the lens barrel 630 along a central axis O of the imaging lens 600.

[0175] In detail, the imaging lens 600, from the object side to the image side, includes optical lens 621, optical lens 622, light-blocking plate 611, optical lens 623, light-blocking plate 612, optical lens 624, light-blocking plate 613, and optical lens 625. It must be noted that the number, structure, surface shape, and other optical characteristics of the optical lenses can be configured according to different imaging requirements and are not limited thereto.

[0176] Please refer to Figure 6B and Figure 6C ,in Figure 6B Drawing according to Figure 6A A schematic diagram of the light-shielding sheet 613 in the sixth embodiment. Figure 6C Drawing according to Figure 6B A partially enlarged view of the light-shielding sheet 613 in the sixth embodiment. Figure 6B and Figure 6C It is understood that the light-shielding sheet 613 includes a central opening 641 and multiple light-shielding structures 642, wherein the central axis O passes through the central opening 641, and the light-shielding structures 642 are arranged around an inner circumferential surface of the central opening 641, and the light-shielding structures 642 gradually taper from the central opening 641 toward the central axis O. Specifically, the light-shielding structures 642 are composed of arc segments.

[0177] The light-shielding structure 642 defines a circumcircle 643 and an inscribed circle 644. The plurality of inscribed circle ends 652 of the light-shielding structure 642 near the central axis O are connected to the inscribed circle 644, and the plurality of circumcircle ends 651 of the light-shielding structure 642 away from the central axis O are connected to the circumcircle 643. Further, the inscribed circle end 652 is an arc segment coinciding with the inscribed circle 644, and the circumcircle end 651 is an arc segment coinciding with the circumcircle 643.

[0178] A light-transmitting portion 645 is formed between the inner circle 644 and each light-shielding structure 642, and a light-shielding portion 646 is formed between the outer circle 643 and each light-shielding structure 642.

[0179] By controlling the area ratio of the light-transmitting part 645 to the light-blocking part 646, excessive light blocking by the light-blocking structure 642 can be avoided, thereby improving the imaging quality of the imaging lens 600. Furthermore, it can faithfully reproduce the scene appearance under harsh environmental conditions to obtain low-noise imaging. Specifically, harsh environmental conditions can be scenes facing a strong light source or scenes with low ambient light.

[0180] The light-shielding sheet 613 and the light-shielding structure 642 can be integrally molded to increase manufacturing efficiency and are suitable for mass production.

[0181] The surface of the light-shielding sheet 613 may include a matting layer. Furthermore, the material of the light-shielding sheet 613 may be a metal or a composite material. The metal material may be treated with sandblasting, ink coating, or film coating, while the composite material may be composed of multiple layers of stacked materials, such as a strip made by sandwiching a plastic material layer with two layers of black carbon-containing material, but this is not a limitation. This further enhances the noise reduction capability of the light-shielding sheet 613 in strong light source scenarios.

[0182] Depend on Figure 6C It is understood that the light-transmitting portion 645 of each light-shielding structure 642 includes at least one arc segment, and the curvature center C of the arc segment is located inside the inscribed circle 644. In the sixth embodiment, the number of arc segments in the light-transmitting portion 645 of each light-shielding structure 642 is two, and both arc segments are located between the outer end 651 and the inner end 652 of the inscribed circle. By allowing the concave arc of the light-shielding structure 642 to extend into the inner circle 644, the area of ​​the light-transmitting portion 645 can be increased, thereby improving the relative illumination.

[0183] Depend on Figure 6A and Figure 6B It can be seen that the radius of the inscribed circle 644 is Ri, and the radius of the circumscribed circle 643 is Ro; the area of ​​the circumscribed circle 643 minus the area of ​​the inscribed circle 644 is AA, the area of ​​the light-transmitting part 645 is A1, and the area of ​​the light-shielding part 646 is A2; the distance between two adjacent parts in the end 652 of the inscribed circle is L; one of the optical lenses (optical lens 625 in the sixth embodiment) has the largest outer diameter, and the central opening of one of the light-shielding plates (central opening 647 of light-shielding plate 611 in the sixth embodiment) has the smallest inner diameter; the maximum outer diameter of one of the optical lenses is φMax, and the minimum inner diameter of the central opening of one of the light-shielding plates is φmin; the number of light-shielding structures 642 is N; the imaging lens 600 has a first viewing angle, which is FOV1; the effective focal length of the imaging lens 600 is EFL, and the parameters satisfy the conditions in Table 6 below.

[0184]

[0185] <Seventh Embodiment>

[0186] Please refer to Figure 7A and Figure 7B ,in Figure 7A A schematic diagram of the electronic device 70 according to the seventh embodiment of this disclosure is shown. Figure 7B Drawing according to Figure 7A A block diagram of the electronic device 70 in the seventh embodiment. Figure 7A and Figure 7BIt is understood that the electronic device 70 is a smartphone and includes at least two imaging lenses with different viewing angles. Further, the number of imaging lenses can be at least three, with one being a first imaging lens, another a second imaging lens, and yet another a third imaging lens. The first imaging lens includes at least one light-shielding plate and at least two optical lenses, wherein the light-shielding plate includes a central opening and multiple light-shielding structures. Specifically, the electronic device 70 includes imaging lenses with different viewing angles, and when one of them has a specific imaging angle, through the light-shielding structure of the light-shielding plate, a relatively similar level of image quality can be obtained when the imaging lens switches scenes under more demanding shooting conditions. Therefore, when using shooting functions with continuously changing viewing angles, it is less likely to cause a drop in image quality or a sense of lag, and a better shooting experience can be maintained.

[0187] In the seventh embodiment, the electronic device 70 includes four imaging lenses: a telephoto lens 711 (i.e., the first imaging lens), a wide-angle main lens 714 (i.e., the second imaging lens), an ultra-wide-angle lens 712 (i.e., the second imaging lens), and an ultra-telephoto lens 713 (i.e., the third imaging lens). Specifically, the telephoto lens 711 is characterized by a narrow angle of view and a small angle of light incidence, which can further reduce excessive light shading. Furthermore, by switching between imaging lenses with different angles of view, the electronic device 70 can achieve optical zoom functionality. It must be noted that the lens cover 72 is only used to illustrate the telephoto lens 711, ultra-wide-angle lens 712, ultra-telephoto lens 713, and wide-angle main lens 714 inside the electronic device 70, and does not indicate that the lens cover 72 is detachable. Specifically, the telephoto lens 711 can be the imaging lens of the first to sixth embodiments described above, but is not limited thereto.

[0188] The electronic device 70 also includes an electronic photosensitive element 73 and a user interface 74, wherein the electronic photosensitive element 73 is disposed on the imaging surface of the telephoto lens 711, the ultra-wide-angle lens 712, the ultra-telephoto lens 713 and the wide-angle main lens 714 (not shown in the figure), and the user interface 74 may be a touch screen or a display screen, and is not limited thereto.

[0189] Furthermore, the user enters the shooting mode through the user interface 74 of the electronic device 70. At this time, the telephoto lens 711, the ultra-wide-angle lens 712, the super telephoto lens 713, and the wide-angle main lens 714 converge the imaging light onto the electronic image sensor 73 and output the relevant electronic signal of the image to the image signal processor (ISP) 75.

[0190] Depending on the camera specifications of the electronic device 70, the electronic device 70 may further include an optical image stabilization component 76, which may be an OIS image stabilization feedback device. Furthermore, the electronic device 70 may also include at least one auxiliary optical element (not shown) and at least one sensing element 77. In the seventh embodiment, the auxiliary optical element is a flash module 78 and a focus assist module 79. The flash module 78 can be used to compensate for color temperature, and the focus assist module 79 may be an infrared rangefinder, a laser focus module, etc. The sensing element 77 can have the function of sensing physical momentum and kinetic energy, such as an accelerometer, gyroscope, or Hall effect element, to sense the shaking and tremors caused by the user's hand or the external environment. This facilitates the autofocus function and optical image stabilization component 76 of the imaging lenses (i.e., telephoto lens 711, ultra-wide-angle lens 712, super telephoto lens 713, and wide-angle main lens 714) in the electronic device 70, resulting in good image quality. This helps the electronic device 70 according to the present invention to have multiple shooting modes, such as optimized Selfie, low-light HDR (High Dynamic Range) imaging, and high-resolution 4K (4K Resolution) video recording. In addition, the user can directly view the camera's shooting screen from the touch screen and manually operate the framing on the touch screen to achieve a WYSIWYG autofocus function.

[0191] In addition, the electronic device 70 may also include, but is not limited to, a display unit, a control unit, a storage unit, a random access memory (RAM), a read-only memory (ROM), or a combination thereof.

[0192] In detail, the telephoto lens 711 has a first perspective, the wide-angle main lens 714 and the ultra-wide-angle lens 712 have a second perspective, and the super telephoto lens 713 has a third perspective, wherein the first perspective is FOV1, the second perspective is FOV2, and the third perspective is FOV3, and the parameters satisfy the conditions in Table 7 below.

[0193]

[0194] Furthermore, the structure and configuration of the remaining components in the seventh embodiment are the same as those in the first to sixth embodiments, and will not be described again here.

[0195] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A light-blocking sheet, characterized in that, Include: A central opening, through which a central shaft passes; and Multiple light-shielding structures are arranged around an inner circumferential surface of the central opening. The light-shielding structures gradually extend from the central opening toward the central axis and define an outer circle and an inner circle. The ends of the inner circles of the light-shielding structures near the central axis are connected to the inner circle, and the ends of the outer circles of the light-shielding structures away from the central axis are connected to the outer circle. Wherein, the inner circle and each of the light-shielding structures form a light-transmitting part, the outer circle and each of the light-shielding structures form a light-shielding part, and the light-transmitting part of each of the light-shielding structures includes at least one arc segment, and the curvature center of the at least one arc segment is located inside the inner circle. Wherein, the radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, the area of ​​the circumscribed circle minus the area of ​​the inscribed circle is AA, the area of ​​the light-transmitting parts is A1, and the area of ​​the light-blocking parts is A2, which satisfy the following conditions: 34 μm ≤ Ro-Ri ≤ 157 μm; AA = A1 + A2; and 0.9 ≤ A1 / A2 ≤ 5.

4.

2. The light-shielding sheet according to claim 1, characterized in that, The light-shielding sheet and these light-shielding structures are integrally formed.

3. The light-shielding sheet according to claim 2, characterized in that, The surface of the light-shielding sheet contains an matte layer.

4. The light-shielding sheet according to claim 2, characterized in that, The radius of the inscribed circle is Ri, and the radius of the circumscribed circle is Ro. They satisfy the following conditions: 46 μm ≤ Ro-Ri ≤ 112 μm.

5. The light-shielding sheet according to claim 2, characterized in that, The radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, and the distance between adjacent ends of the inscribed circles is L, satisfying the following condition: 0.27 ≤ (Ro-Ri) / L ≤ 1.

32.

6. The light-shielding sheet according to claim 2, characterized in that, The number of these light-shielding structures is N, and they satisfy the following condition: 28 ≤ N ≤ 93。 7. The light-shielding sheet according to claim 2, characterized in that, The areas of the light-transmitting parts are A1, and the areas of the light-blocking parts are A2, satisfying the following conditions: 1.05 ≤ A1 / A2 ≤ 3.

4.

8. An imaging lens, characterized in that, Include: The light-shielding sheet as described in claim 1; and At least two optical lenses are provided, and the at least two optical lenses and the light-shielding plate are disposed in a lens barrel along the central axis; The imaging lens has a first field of view, FOV1, which satisfies the following conditions: 18 degrees ≤ FOV1 ≤ 51 degrees.

9. An electronic device, characterized in that, Include: At least two imaging lenses with different viewing angles, one of which is a first imaging lens having a first viewing angle, wherein the first imaging lens includes at least one light-blocking plate, and the at least one light-blocking plate includes: A central opening, through which a central axis of the first imaging lens passes; and Multiple light-shielding structures are arranged around an inner circumferential surface of the central opening. The light-shielding structures gradually taper from the central opening toward the central axis and are used to define an outer circle and an inner circle. The ends of the inner circles of the light-shielding structures near the central axis are connected to the inner circle, and the ends of the outer circles of the light-shielding structures away from the central axis are connected to the outer circle. A light-transmitting portion of each light-shielding structure includes at least one arc segment, and the curvature center of the at least one arc segment is located inside the inner circle. Wherein, the first viewpoint is FOV1, the radius of the inscribed circle is Ri, and the radius of the circumscribed circle is Ro, which satisfy the following conditions: 18 degrees ≤ FOV1 ≤ 51 degrees; and 34 μm ≤ Ro-Ri ≤ 157 μm.

10. The electronic device according to claim 9, characterized in that, The other of the at least two imaging lenses is a second imaging lens, and the second imaging lens has a second field of view, FOV2, which satisfies the following conditions: 68 degrees ≤ FOV2 ≤ 175 degrees.

11. The electronic device according to claim 10, characterized in that, The number of imaging lenses is at least three, one of which is a third imaging lens, and the third imaging lens has a third field of view, which is FOV3, and satisfies the following conditions: 5 degrees ≤ FOV3 ≤ 22 degrees.

12. The electronic device according to claim 9, characterized in that, The first imaging lens also includes: At least two optical lenses, one of which has a maximum outer diameter; The number of the at least one light-shielding sheet is multiple, and the central opening of one of the light-shielding sheets has a minimum inner diameter; Wherein, the maximum outer diameter of the at least two optical lenses is φMax, and the minimum inner diameter of the central opening of the light-shielding plates is φmin, satisfying the following conditions: 0.29 ≤ φmin / φMax ≤ 0.

79.

13. The electronic device according to claim 9, characterized in that, The first imaging lens also includes: At least two optical lenses, one of which has a maximum outer diameter; Wherein, the maximum outer diameter of one of the at least two optical lenses is φMax, and the effective focal length of the first imaging lens is EFL, and the following conditions are satisfied: 0.8 ≤ EFL / φMax ≤ 4.

2.

14. The electronic device according to claim 9, characterized in that, The first-person perspective is FOV1, which satisfies the following conditions: 22 degrees ≤ FOV1 ≤ 40 degrees.

15. The electronic device according to claim 9, characterized in that, At least one light-shielding sheet is integrally formed with the light-shielding structures.

16. The electronic device according to claim 15, characterized in that, The surface of at least one of the light-shielding sheets includes an matting layer.

17. The electronic device according to claim 15, characterized in that, The radius of the inscribed circle is Ri, and the radius of the circumscribed circle is Ro. They satisfy the following conditions: 46 μm ≤ Ro-Ri ≤ 112 μm.

18. The electronic device according to claim 15, characterized in that, The radius of the inscribed circle is Ri, the radius of the circumscribed circle is Ro, and the distance between adjacent ends of the inscribed circles is L, satisfying the following condition: 0.27 ≤ (Ro-Ri) / L ≤ 1.

32.

19. The electronic device according to claim 15, characterized in that, The number of these light-shielding structures is N, and they satisfy the following condition: 28 ≤ N ≤ 93。 20. The electronic device according to claim 15, characterized in that, The light-transmitting portion is between the inner circle and each of the light-shielding structures, and the light-shielding portion is between the outer circle and each of the light-shielding structures. Wherein, the area of ​​the circumcircle minus the area of ​​the incircle is AA, the area of ​​the light-transmitting parts is A1, and the area of ​​the light-blocking parts is A2, satisfying the following conditions: AA = A1 + A2; and 0.9 ≤ A1 / A2 ≤ 5.

4.

21. The electronic device according to claim 15, characterized in that, The light-transmitting portion is between the inner circle and each of the light-shielding structures, and the light-shielding portion is between the outer circle and each of the light-shielding structures. Wherein, the area of ​​the circumcircle minus the area of ​​the incircle is AA, the area of ​​the light-transmitting parts is A1, and the area of ​​the light-blocking parts is A2, satisfying the following conditions: AA = A1 + A2; and 1.05 ≤ A1 / A2 ≤ 3.4.

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