Imaging lenses and electronic devices

Abstract

An imaging lens and electronic device are disclosed. The imaging lens includes multiple optical lenses, a single-piece molded light-blocking plate, and a lens barrel. The single-piece molded light-blocking plate corresponds to the optical lenses. The lens barrel has a circular light-transmitting aperture corresponding to the optical lenses and the single-piece molded light-blocking plate. The single-piece molded light-blocking plate has a central opening corresponding to the lens barrel and the optical lenses. The central opening defines a maximum opening diameter. The single-piece molded light-blocking plate includes multiple light-blocking structures arranged around the central opening. The number of light-blocking structures is three to ten. The center of each light-blocking structure is closer to the center of the central opening than its two ends. The two ends of each light-blocking structure extend towards the maximum opening diameter of the central opening. This facilitates achieving the desired imaging result.

Description

Technical Field

[0001] This disclosure relates to an imaging lens, and more particularly to an imaging lens used in portable electronic devices. 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 mounted on these portable electronic devices have also flourished. However, with the advancement of technology, users have increasingly higher requirements for the quality of imaging lenses. Summary of the Invention

[0003] The imaging lens and electronic device disclosed herein can produce an effect similar to the multi-blade aperture of a single-lens camera by configuring a single-piece molded light shield. Furthermore, the light shield structure enables the light source to be identified and precisely controls the size of the central opening to achieve the desired imaging result.

[0004] This disclosure provides an imaging lens comprising multiple optical lenses, a single-piece molded light-blocking plate, and a lens barrel. The single-piece molded light-blocking plate corresponds to the optical lenses. The lens barrel has a circular light-transmitting aperture corresponding to the optical lenses and the single-piece molded light-blocking plate. The single-piece molded light-blocking plate has a central opening corresponding to the lens barrel and the optical lenses. The central opening defines a maximum opening diameter, and the single-piece molded light-blocking plate includes multiple light-blocking structures arranged around the central opening. The number of light-blocking structures is three to ten. The center of each light-blocking structure is closer to the center of the central opening than its two ends. The two ends of each light-blocking structure extend towards the maximum opening diameter of the central opening. The maximum opening radius of the central opening is Rmax. A minimum inscribed circle radius of the central opening is defined near the center of each light-blocking structure as Rmin. The circularity coefficient of the central opening is tc, which satisfies the following condition: 0.41% ≤ tc ≤ 10.2%, where tc = ((Rmax - Rmin) / Rmax) × 100%. The single-piece molded light-shielding sheet may also include multiple radial structures, which are arranged around the central opening. The number of radial structures can be three to ten. Each radial structure is connected to the adjacent light-shielding structure, and each radial structure can be arc-shaped.

[0005] According to the imaging lens of the embodiment described above, the radius of curvature of each radial structure is R, which can satisfy the following condition: 0.25mm <R<4.2mm。

[0006] According to the imaging lens of the embodiment described above, the maximum opening radius of the central opening is Rmax, and the radius of curvature of each radial structure is R, which can satisfy the following condition: R = Rmax.

[0007] An imaging lens according to the embodiment described in the previous paragraph, wherein the radius structures and the light shielding structures are alternately arranged around the central opening.

[0008] An imaging lens according to the embodiment described in the previous paragraph, wherein the focal length of the imaging lens is f, and the maximum opening radius of the central opening is Rmax, which can satisfy the following conditions: 0.9 < F < 3.25, where F = f / 2Rmax.

[0009] An imaging lens according to the embodiment described in the previous paragraph, wherein the single-piece molded light shielding sheet may further include a plurality of radius structures, which are disposed around the central opening, and each radius structure is connected to the adjacent two light shielding structures. Each light shielding structure may be a straight line segment, and each radius structure may be an arc shape.

[0010] An imaging lens according to the embodiment described in the previous paragraph, wherein the true circle coefficient of the central opening is tc, which can satisfy the following conditions: 0.83% ≤ tc ≤ 8.6%. Furthermore, it can satisfy the following conditions: 0.83% ≤ tc ≤ 6.8%. Additionally, it can satisfy the following conditions: 0.68% ≤ tc ≤ 4.1%.

[0011] An imaging lens according to the embodiment described in the previous paragraph, wherein the number of the light shielding structures may be five to nine.

[0012] An imaging lens according to the embodiment described in the previous paragraph, wherein the thickness of the single-piece molded light shielding sheet is S, which can satisfy the following conditions: 5μm < S < 210μm.

[0013] An electronic device according to an embodiment of the present disclosure, which includes an imaging lens according to the foregoing embodiment and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1A A schematic diagram showing an imaging lens according to the first embodiment of the present disclosure;

[0015] Figure 1B Showing according to Figure 1A an exploded view of the imaging lens;

[0016] Figure 2A Showing according to Figure 1A a cross-sectional view of the single-piece molded light shielding sheet of the imaging lens in the first embodiment of the first embodiment;

[0017] Figure 2B Showing according to Figure 2A a schematic diagram of the single-piece molded light shielding sheet;

[0018] Figure 3A Showing according to Figure 1AA cross-sectional view of the monolithically molded light shield of the imaging lens in the second embodiment of the first embodiment;

[0019] Figure 3B Drawing according to Figure 3A A schematic diagram of a single-unit molded light-shielding sheet;

[0020] Figure 4A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light shield of the imaging lens in the third embodiment of the first embodiment;

[0021] Figure 4B Drawing according to Figure 4A A schematic diagram of a single-unit molded light-shielding sheet;

[0022] Figure 5A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light shield of the imaging lens in the fourth embodiment of the first embodiment.

[0023] Figure 5B Drawing according to Figure 5A A schematic diagram of a single-unit molded light-shielding sheet;

[0024] Figure 6A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light shield of the imaging lens in the fifth embodiment of the first embodiment;

[0025] Figure 6B Drawing according to Figure 6A A schematic diagram of a single-unit molded light-shielding sheet;

[0026] Figure 7A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light shield of the imaging lens in the sixth embodiment of the first embodiment.

[0027] Figure 7B Drawing according to Figure 7A A schematic diagram of a single-unit molded light-shielding sheet;

[0028] Figure 8A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light shield of the imaging lens in the seventh embodiment of the first embodiment.

[0029] Figure 8B Drawing according to Figure 8A A schematic diagram of a single-unit molded light-shielding sheet;

[0030] Figure 9A A schematic diagram of an imaging lens according to the second embodiment of this disclosure is shown;

[0031] Figure 9B Drawing according to Figure 9AAn exploded view of the imaging lens;

[0032] Figure 10A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light shield of the imaging lens in the first embodiment of the second implementation;

[0033] Figure 10B Drawing according to Figure 10A A schematic diagram of a single-unit molded light-shielding sheet;

[0034] Figure 11A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light shield of the imaging lens in the second embodiment of the second implementation;

[0035] Figure 11B Drawing according to Figure 11A A schematic diagram of a single-unit molded light-shielding sheet;

[0036] Figure 12A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light shield of the imaging lens in the third embodiment of the second embodiment;

[0037] Figure 12B Drawing according to Figure 12A A schematic diagram of a single-unit molded light-shielding sheet;

[0038] Figure 13A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light shield of the imaging lens in the fourth embodiment of the second embodiment.

[0039] Figure 13B Drawing according to Figure 13A A schematic diagram of a single-unit molded light-shielding sheet;

[0040] Figure 14A A schematic diagram illustrating the electronic device according to the third embodiment of this disclosure;

[0041] Figure 14B Drawing according to Figure 14A Another schematic diagram of the electronic device in the third embodiment;

[0042] Figure 14C Drawing according to Figure 14A A schematic diagram of an image captured by an electronic device in the third embodiment;

[0043] Figure 14D Drawing according to Figure 14A Another image diagram captured by the electronic device in the third embodiment;

[0044] Figure 14E Drawing according to Figure 14AAnother image illustration captured by the electronic device in the third embodiment; and

[0045] Figure 15 A schematic diagram of an electronic device according to the fourth embodiment of this disclosure is shown.

[0046] [Symbol Explanation]

[0047] 10,20: Electronic devices

[0048] 11: User Interface

[0049] 12,13,14,21,22,23,24,25,26,27,28,29: Camera modules

[0050] 15: Imaging signal processing element

[0051] 16,20a: Flash module

[0052] 100, 200: Imaging lens

[0053] 101,201: Lens tube

[0054] 102,202: Imaging plane

[0055] 203: Filter element

[0056] 110, 210: Circular light-transmitting aperture

[0057] 120, 220: Monolithically molded light-shielding sheet

[0058] 1201, 2201: Center opening

[0059] 121,221: Light-shielding structure

[0060] 122,222: Radius structure

[0061] 131,231: First optical lens

[0062] 132,232: Second optical lens

[0063] 133,233: Third optical lens

[0064] 134,234: Fourth optical lens

[0065] 135, 235: Fifth optical lens

[0066] 236: Sixth Optical Lens

[0067] 237: Seventh Optical Lens

[0068] 141,142,144,241,242,243,244,246: Light-blocking sheet

[0069] 143,245: Spacer ring

[0070] 145,247: Fixing ring

[0071] Rmax: Maximum opening radius of the center opening

[0072] Rmin: The minimum inscribed radius of the center opening

[0073] R: Radius of curvature of each radial structure

[0074] S: Thickness of the monolithically molded light-shielding sheet

[0075] Ang1: The angle between the center of the central opening and the lines connecting the two ends of each light-shielding structure.

[0076] Ang2: The angle between the center of the central opening and the lines connecting the two ends of each radial structure. Detailed Implementation

[0077] This disclosure provides an imaging lens comprising multiple optical lenses, a monolithic light-blocking plate, and a lens barrel. The monolithic light-blocking plate corresponds to the optical lenses, and the lens barrel has a circular light-passing aperture corresponding to both the optical lenses and the monolithic light-blocking plate. The monolithic light-blocking plate has a central opening corresponding to both the lens barrel and the optical lenses. The central opening defines a maximum opening diameter, and the monolithic light-blocking plate includes multiple light-blocking structures arranged around the central opening, with the number of light-blocking structures ranging from three to ten. The center of each light-blocking structure is closer to the center of the central opening than its two ends, and the two ends of each light-blocking structure extend towards the maximum opening diameter of the central opening. The maximum opening radius of the central opening is Rmax, and a minimum inscribed circle radius of the central opening is defined near the center of each light-blocking structure as Rmin. The circularity coefficient of the central opening is tc, which satisfies the following condition: 0.41% ≤ tc ≤ 10.2%, where tc = ((Rmax - Rmin) / Rmax) × 100%. Since a monolithic light-blocking hood can function as the aperture of an imaging lens, the maximum diameter of its central opening is equal to the aperture diameter (EPD) of the imaging lens. A monolithic light-blocking hood can produce an effect similar to the multi-blade aperture of a single-lens reflex camera. This light-blocking structure can therefore effectively control the imaging performance of the physical light source, making the light source recognizable and precisely controlling the size of the central opening to achieve the desired imaging result. It should be noted that the roundness coefficient mentioned in this disclosure is not the same as roundness, which can be defined as t, where t = (Rmax - Rmin).

[0078] The single-piece molded light-shielding sheet may further include a plurality of radius structures disposed around the central opening. The number of radius structures may be three to ten. Each radius structure is connected to two adjacent light-shielding structures, and each radius structure may be arc-shaped. Thus, the arc-shaped design can avoid excessive light shielding and affect the specifications of the imaging lens.

[0079] The radius of curvature of each radius structure is R, which satisfies the following condition: 0.25 mm < R < 4.2 mm. By controlling the radius structure while maintaining a specific quantity, more imaging light rays with a higher field of view can pass through.

[0080] The maximum opening radius of the central opening is Rmax, and the radius of curvature of each radius structure is R, which satisfies the following condition: R = Rmax. Thus, while maintaining the identifiability of the light source, a high aperture value of the lens can be maintained.

[0081] The radius structures and the light-shielding structures are alternately arranged around the central opening. Thus, with the design of the radius structure in the central opening, the light-shielding structure can be prevented from being too long.

[0082] The focal length of the imaging lens is f, and the maximum opening radius of the central opening is Rmax, which satisfies the following condition: 0.9 < F < 3.25, where F = f / 2Rmax. Thus, while maintaining an ideal true circle coefficient range, sufficient imaging light rays can be collected to keep the imaging level at a relatively high level.

[0083] Each light-shielding structure is a straight line segment, and each radius structure is an arc shape. Thus, the concentrated light beam of the strong light source will be reflected simultaneously due to the straight-line light-shielding structure, and the arc-shaped radius structure design can prevent the strong light source from being overly blocked by the straight-line segment, allowing the imaging light rays of the strong light source to pass through completely.

[0084] The true circle coefficient of the central opening is tc, which satisfies the following condition: 0.83% ≤ tc ≤ 8.6%. Thus, excessive light shielding can be avoided, and low-light shooting will not be affected. Furthermore, the following condition can be satisfied: 0.83% ≤ tc ≤ 6.8%. Thus, the imaging light rays of the low light source will not be affected, ensuring better performance for low-light source objects during shooting. Additionally, the following condition can be satisfied: 0.68% ≤ tc ≤ 4.1%. Thus, the light input can be increased, ensuring better imaging performance in a night environment.

[0085] The number of light-shielding structures may be five to nine. Thus, with an appropriate number of light-shielding structures, a balance between high light input and high identifiability can be maintained.

[0086] The thickness of the single-piece molded light-shielding sheet is S, which satisfies the following condition: 5 μm < S < 210 μm. Thus, within a specific thickness range and under the premise of relatively harsh actual shooting conditions, it is not easy to generate additional non-ideal light rays.

[0087] This disclosure provides an electronic device comprising the aforementioned imaging lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging lens.

[0088] The following provides specific implementation methods and examples, along with detailed descriptions in conjunction with the accompanying drawings.

[0089] <First Implementation Method>

[0090] Please refer to Figure 1A as well as Figure 1B ,in Figure 1A A schematic diagram of the imaging lens 100 according to the first embodiment of this disclosure is shown. Figure 1B Drawing according to Figure 1A An exploded view of the imaging lens 100. (From...) Figure 1A as well as Figure 1B As can be seen, the imaging lens 100 includes multiple optical lenses (unlabeled), a single-piece molded light shield 120, and a lens barrel 101. The optical lenses and the single-piece molded light shield 120 are housed in the lens barrel 101. The lens barrel 101 has a circular light-transmitting hole 110 corresponding to the optical lenses and the single-piece molded light shield 120. The single-piece molded light shield 120 corresponds to the optical lenses. The imaging surface 102 is located on the image side of the lens barrel 101.

[0091] Specifically, Figure 1A In the first embodiment, the number of optical lenses is five, which are arranged sequentially from the object side to the image side of the imaging lens 100 as a first optical lens 131, a second optical lens 132, a third optical lens 133, a fourth optical lens 134, and a fifth optical lens 135. A single-piece molded light-shielding plate 120 is a light-shielding plate between the lens barrel 101 and the first optical lens 131 in the imaging lens 100. Additionally, the imaging lens 100 disclosed herein may also include other optical elements, such as light-shielding plates, spacer rings, and fixing rings; more specifically... Figure 1A The imaging lens 100 of the first embodiment may further include three light-shielding plates 141, 142, 144, a spacer ring 143, and a fixing ring 145. However, the position of the single-piece molded light-shielding plates and the configuration of the light-shielding plates, spacer rings, and fixing rings disclosed herein can be adjusted as needed and are not limited thereto.

[0092] Reference Figure 2A as well as Figure 2B ,in Figure 2A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the first embodiment of the first implementation. Figure 2B Drawing according to Figure 2A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 2A as well as Figure 2BIt is understood that the monolithically molded light shield 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light shield structure 121. The monolithically molded light shield 120 includes a plurality of light shield structures 121 arranged around the central opening 1201. The center of each light shield structure 121 is closer to the center of the central opening 1201 than the two ends of each light shield structure 121. The two ends of each light shield structure 121 extend towards the maximum opening diameter of the central opening 1201. Figure 2B In the middle, there are nine light-shielding structures 121, and the angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, where Ang1 is 40 degrees, but the content of this disclosure is not limited to this.

[0093] In the first embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, and the focal length of the imaging lens 100 is f, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 1A below.

[0094]

[0095] Please refer to Figure 3A as well as Figure 3B ,in Figure 3A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the second embodiment of the first embodiment. Figure 3B Drawing according to Figure 3A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 3A as well as Figure 3B It is understood that the monolithically molded light shield 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light shield structure 121. The monolithically molded light shield 120 includes a plurality of light shield structures 121 arranged around the central opening 1201. The center of each light shield structure 121 is closer to the center of the central opening 1201 than the two ends of each light shield structure 121. The two ends of each light shield structure 121 extend towards the maximum opening diameter of the central opening 1201. Figure 3BIn the middle, there are seven light-shielding structures 121, and the angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, which is 51.429 degrees, but the content of this disclosure is not limited to this.

[0096] In the second embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, and the focal length of the imaging lens 100 is f, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 1B below.

[0097]

[0098] Please refer to Figure 4A as well as Figure 4B ,in Figure 4A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the third embodiment of the first embodiment. Figure 4B Drawing according to Figure 4A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 4A as well as Figure 4B It is understood that the monolithic light-shielding sheet 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light-shielding structure 121. The monolithic light-shielding sheet 120 includes multiple light-shielding structures 121 and multiple radius structures 122, which are arranged around the central opening 1201 and alternately arranged around the central opening 1201. The center of each light-shielding structure 121 is closer to the center of the central opening 1201 than the two ends of each light-shielding structure 121. The two ends of each light-shielding structure 121 extend towards the maximum opening diameter of the central opening 1201. Each radius structure 122 is interconnected with two adjacent light-shielding structures 121. Figure 4B In the diagram, there are seven light-shielding structures 121, which are straight line segments, and seven radial structures 122, which are arc-shaped. The angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, which is 40.002 degrees. The angle between the center of the central opening 1201 and the line connecting the two ends of each radial structure 122 is Ang2, which is 11.426 degrees. However, the content of this disclosure is not limited to this.

[0099] In the third embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, the focal length of the imaging lens 100 is f, and the radius of curvature of each radius structure 122 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 1C below.

[0100]

[0101] Please refer to Figure 5A as well as Figure 5B ,in Figure 5A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the fourth embodiment of the first embodiment. Figure 5B Drawing according to Figure 5A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 5A as well as Figure 5B It is understood that the monolithic light-shielding sheet 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light-shielding structure 121. The monolithic light-shielding sheet 120 includes multiple light-shielding structures 121 and multiple radius structures 122, which are arranged around the central opening 1201 and alternately arranged around the central opening 1201. The center of each light-shielding structure 121 is closer to the center of the central opening 1201 than the two ends of each light-shielding structure 121. The two ends of each light-shielding structure 121 extend towards the maximum opening diameter of the central opening 1201. Each radius structure 122 is interconnected with two adjacent light-shielding structures 121. Figure 5B In the diagram, there are five light-shielding structures 121, which are straight line segments, and five radial structures 122, which are arc-shaped. The angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, which is 51.43 degrees. The angle between the center of the central opening 1201 and the line connecting the two ends of each radial structure 122 is Ang2, which is 20.57 degrees. However, the content of this disclosure is not limited to this.

[0102] In the fourth embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, the focal length of the imaging lens 100 is f, and the radius of curvature of each radius structure 122 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 1D below.

[0103]

[0104] Please refer to Figure 6A as well as Figure 6B ,in Figure 6A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the fifth embodiment of the first embodiment. Figure 6B Drawing according to Figure 6A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 6A as well as Figure 6B It is understood that the monolithic light-shielding sheet 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light-shielding structure 121. The monolithic light-shielding sheet 120 includes multiple light-shielding structures 121 and multiple radius structures 122, which are arranged around the central opening 1201 and alternately arranged around the central opening 1201. The center of each light-shielding structure 121 is closer to the center of the central opening 1201 than the two ends of each light-shielding structure 121. The two ends of each light-shielding structure 121 extend towards the maximum opening diameter of the central opening 1201. Each radius structure 122 is interconnected with two adjacent light-shielding structures 121. Figure 6B In the diagram, there are five light-shielding structures 121, which are straight line segments, and five radial structures 122, which are arc-shaped. The angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, which is 46.21 degrees. The angle between the center of the central opening 1201 and the line connecting the two ends of each radial structure 122 is Ang2, which is 25.79 degrees. However, the content of this disclosure is not limited to this.

[0105] In the fifth embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, the focal length of the imaging lens 100 is f, and the radius of curvature of each radius structure 122 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 1E below.

[0106]

[0107] Please refer to Figure 7A as well as Figure 7B ,in Figure 7A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the sixth embodiment of the first embodiment. Figure 7B Drawing according to Figure 7A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 7A as well as Figure 7B It is understood that the monolithic light-shielding sheet 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light-shielding structure 121. The monolithic light-shielding sheet 120 includes multiple light-shielding structures 121 and multiple radius structures 122, which are arranged around the central opening 1201 and alternately arranged around the central opening 1201. The center of each light-shielding structure 121 is closer to the center of the central opening 1201 than the two ends of each light-shielding structure 121. The two ends of each light-shielding structure 121 extend towards the maximum opening diameter of the central opening 1201. Each radius structure 122 is interconnected with two adjacent light-shielding structures 121. Figure 7B In the diagram, there are four light-shielding structures 121, which are straight line segments, and four radius structures 122, which are arc-shaped. The angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, which is 51.43 degrees. The angle between the center of the central opening 1201 and the line connecting the two ends of each radius structure 122 is Ang2, which is 38.57 degrees. However, the content of this disclosure is not limited to this.

[0108] In the sixth embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, the focal length of the imaging lens 100 is f, and the radius of curvature of each radius structure 122 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfies the value of F in Table 1 below.

[0109]

[0110] Please refer to Figure 8A as well as Figure 8B ,in Figure 8A Drawing according to Figure 1A A cross-sectional view of the monolithically molded light-shielding plate 120 of the imaging lens 100 in the seventh embodiment of the first embodiment. Figure 8B Drawing according to Figure 8A A schematic diagram of the single-unit molded light-shielding sheet 120. (From...) Figure 8A as well as Figure 8B It is understood that the monolithic light-shielding sheet 120 has a central opening 1201 corresponding to the lens barrel 101 and the optical lens. The central opening 1201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 1201 is defined near the center of each light-shielding structure 121. The monolithic light-shielding sheet 120 includes multiple light-shielding structures 121 and multiple radius structures 122, which are arranged around the central opening 1201 and alternately arranged around the central opening 1201. The center of each light-shielding structure 121 is closer to the center of the central opening 1201 than the two ends of each light-shielding structure 121. The two ends of each light-shielding structure 121 extend towards the maximum opening diameter of the central opening 1201. Each radius structure 122 is interconnected with two adjacent light-shielding structures 121. Figure 8B In the diagram, there are four light-shielding structures 121, which are straight line segments, and four radius structures 122, which are arc-shaped. The angle between the center of the central opening 1201 and the line connecting the two ends of each light-shielding structure 121 is Ang1, which is 42.965 degrees. The angle between the center of the central opening 1201 and the line connecting the two ends of each radius structure 122 is Ang2, which is 47.035 degrees. However, the content of this disclosure is not limited to this.

[0111] In the seventh embodiment of the first implementation, the maximum opening radius of the central opening 1201 is Rmax, the minimum inscribed circle radius of the central opening 1201 is Rmin, the true circle coefficient of the central opening 1201 is tc, the thickness of the single-piece molded light shield 120 is S, the focal length of the imaging lens 100 is f, and the radius of curvature of each radius structure 122 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 1G below.

[0112]

[0113] <Second Implementation Method>

[0114] Please refer to Figure 9A as well as Figure 9B ,in Figure 9A A schematic diagram of the imaging lens 200 according to the second embodiment of this disclosure is shown. Figure 9B Drawing according to Figure 9A An exploded view of the imaging lens 200. (From...) Figure 9A as well as Figure 9B As can be seen, the imaging lens 200 includes multiple optical lenses (unlabeled), a single-piece molded light shield 220, and a lens barrel 201. The optical lenses and the single-piece molded light shield 220 are housed in the lens barrel 201. The lens barrel 201 has a circular light-transmitting hole 210 corresponding to the optical lenses and the single-piece molded light shield 220. The single-piece molded light shield 220 corresponds to the optical lenses. The imaging surface 202 is located on the image side of the lens barrel 201.

[0115] Specifically, Figure 9A In the second embodiment, the number of optical lenses is seven, arranged sequentially from the object side to the image side of the imaging lens 200 as a first optical lens 231, a second optical lens 232, a third optical lens 233, a fourth optical lens 234, a fifth optical lens 235, a sixth optical lens 236, and a seventh optical lens 237. A single-piece molded light-shielding plate 220 serves as the light-shielding plate between the second optical lens 232 and the third optical lens 233 in the imaging lens 200. Furthermore, the imaging lens 200 disclosed herein may also include other optical elements, such as light-shielding plates, spacer rings, and retaining rings; more specifically… Figure 9A The imaging lens 200 of the second embodiment may further include five light-shielding plates 241, 242, 243, 244, 246, a spacer ring 245, and a fixing ring 247. However, the position of the monolithically molded light-shielding plates and the configuration of the light-shielding plates, spacer rings, and fixing rings disclosed herein can be adjusted as needed and are not limited thereto. In addition, the imaging lens 200 may also include a light-filtering element 203 located between the lens barrel 201 and the imaging surface 202.

[0116] Reference Figure 10A as well as Figure 10B ,in Figure 10A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light-shielding plate 220 of the imaging lens 200 in the first embodiment of the second implementation. Figure 10B Drawing according to Figure 10A A schematic diagram of the single-unit molded light-shielding sheet 220. (From...) Figure 10A as well as Figure 10B It is understood that the monolithic light-shielding sheet 220 has a central opening 2201 corresponding to the lens barrel 201 and the optical lens. The central opening 2201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 2201 is defined near the center of each light-shielding structure 221. The monolithic light-shielding sheet 220 includes multiple light-shielding structures 221 arranged around the central opening 2201. The center of each light-shielding structure 221 is closer to the center of the central opening 2201 than its two ends. The two ends of each light-shielding structure 221 extend towards the maximum opening diameter of the central opening 2201. Figure 10B In the middle, there are nine light-shielding structures 221, and the angle between the center of the central opening 2201 and the line connecting the two ends of each light-shielding structure 221 is Ang1, where Ang1 is 40 degrees, but the content of this disclosure is not limited to this.

[0117] In the first embodiment of the second implementation, the maximum opening radius of the central opening 2201 is Rmax, the minimum inscribed circle radius of the central opening 2201 is Rmin, the true circle coefficient of the central opening 2201 is tc, the thickness of the single-piece molded light shield 220 is S, and the focal length of the imaging lens 200 is f, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 2A below.

[0118]

[0119] Please refer to Figure 11A as well as Figure 11B ,in Figure 11A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light-shielding plate 220 of the imaging lens 200 in the second embodiment of the second implementation. Figure 11B Drawing according to Figure 11A A schematic diagram of the single-unit molded light-shielding sheet 220. (From...) Figure 11A as well as Figure 11BIt is understood that the monolithic light-shielding sheet 220 has a central opening 2201 corresponding to the lens barrel 201 and the optical lens. The central opening 2201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 2201 is defined near the center of each light-shielding structure 221. The monolithic light-shielding sheet 220 includes multiple light-shielding structures 221 and multiple radius structures 222, which are arranged around the central opening 2201 and alternately arranged around the central opening 2201. The center of each light-shielding structure 221 is closer to the center of the central opening 2201 than the two ends of each light-shielding structure 221. The two ends of each light-shielding structure 221 extend towards the maximum opening diameter of the central opening 2201. Each radius structure 222 is interconnected with two adjacent light-shielding structures 221. Figure 11B In the diagram, there are nine light-shielding structures 221, which are straight line segments, and nine radius structures 222, which are arc-shaped. The angle between the center of the central opening 2201 and the line connecting the two ends of each light-shielding structure 221 is Ang1, which is 23.086 degrees. The angle between the center of the central opening 2201 and the line connecting the two ends of each radius structure 222 is Ang2, which is 16.914 degrees. However, the content of this disclosure is not limited to this.

[0120] In the second embodiment of the second implementation, the maximum opening radius of the central opening 2201 is Rmax, the minimum inscribed circle radius of the central opening 2201 is Rmin, the true circle coefficient of the central opening 2201 is tc, the thickness of the single-piece molded light shield 220 is S, the focal length of the imaging lens 200 is f, and the radius of curvature of each radius structure 222 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 2B below.

[0121]

[0122] Reference Figure 12A as well as Figure 12B ,in Figure 12A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light-shielding plate 220 of the imaging lens 200 in the third embodiment of the second embodiment. Figure 12B Drawing according to Figure 12A A schematic diagram of the single-unit molded light-shielding sheet 220. (From...) Figure 12A as well as Figure 12BIt is understood that the monolithic light-shielding sheet 220 has a central opening 2201 corresponding to the lens barrel 201 and the optical lens. The central opening 2201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 2201 is defined near the center of each light-shielding structure 221. The monolithic light-shielding sheet 220 includes multiple light-shielding structures 221 arranged around the central opening 2201. The center of each light-shielding structure 221 is closer to the center of the central opening 2201 than its two ends. The two ends of each light-shielding structure 221 extend towards the maximum opening diameter of the central opening 2201. Figure 12B In the middle, there are seven light-shielding structures 221, and the angle between the center of the central opening 2201 and the line connecting the two ends of each light-shielding structure 221 is Ang1, which is 51.429 degrees, but the content of this disclosure is not limited to this.

[0123] In the third embodiment of the second implementation, the maximum opening radius of the central opening 2201 is Rmax, the minimum inscribed circle radius of the central opening 2201 is Rmin, the true circle coefficient of the central opening 2201 is tc, the thickness of the single-piece molded light shield 220 is S, and the focal length of the imaging lens 200 is f, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 2C below.

[0124]

[0125] Please refer to Figure 13A as well as Figure 13B ,in Figure 13A Drawing according to Figure 9A A cross-sectional view of the monolithically molded light-shielding plate 220 of the imaging lens 200 in the fourth embodiment of the second embodiment. Figure 13B Drawing according to Figure 13A A schematic diagram of the single-unit molded light-shielding sheet 220. (From...) Figure 13A as well as Figure 13B It is understood that the monolithic light-shielding sheet 220 has a central opening 2201 corresponding to the lens barrel 201 and the optical lens. The central opening 2201 defines a maximum opening diameter. The minimum inscribed circle radius of the central opening 2201 is defined near the center of each light-shielding structure 221. The monolithic light-shielding sheet 220 includes multiple light-shielding structures 221 and multiple radius structures 222, which are arranged around the central opening 2201 and alternately arranged around the central opening 2201. The center of each light-shielding structure 221 is closer to the center of the central opening 2201 than the two ends of each light-shielding structure 221. The two ends of each light-shielding structure 221 extend towards the maximum opening diameter of the central opening 2201. Each radius structure 222 is interconnected with two adjacent light-shielding structures 221. Figure 13BIn the diagram, there are seven light-shielding structures 221, which are straight line segments, and seven radial structures 222, which are arc-shaped. The angle between the center of the central opening 2201 and the line connecting the two ends of each light-shielding structure 221 is Ang1, which is 22.294 degrees. The angle between the center of the central opening 2201 and the line connecting the two ends of each radial structure 222 is Ang2, which is 29.135 degrees. However, the content of this disclosure is not limited to this.

[0126] In the fourth embodiment of the second implementation, the maximum opening radius of the central opening 2201 is Rmax, the minimum inscribed circle radius of the central opening 2201 is Rmin, the true circle coefficient of the central opening 2201 is tc, the thickness of the single-piece molded light shield 220 is S, the focal length of the imaging lens 200 is f, and the radius of curvature of each radius structure 222 is R, where t = Rmax - Rmin, tc = ((Rmax - Rmin) / Rmax) × 100% = t / Rmax × 100%, and F = f / 2Rmax, which satisfy the values ​​in Table 2D below.

[0127]

[0128] <Third Implementation Method>

[0129] Please refer to Figure 14A and Figure 14B ,in Figure 14A A schematic diagram of the electronic device 10 according to the third embodiment of this disclosure is shown. Figure 14B Drawing according to Figure 14A Another schematic diagram of the electronic device 10 in the third embodiment. Figure 14A and Figure 14B As can be seen, the electronic device 10 is a smartphone. The electronic device 10 includes three camera modules 12, 13, and 14, and a user interface 11. Each camera module 12, 13, and 14 includes an imaging lens (not shown) and an electronic image sensor (not shown). The electronic image sensor is disposed on an imaging surface of the imaging lens (not shown). Specifically, the imaging lens can be any of the imaging lenses described in the first and second embodiments, but this disclosure is not limited thereto. Furthermore, camera module 12 is an ultra-wide-angle camera module, camera module 13 is a high-pixel camera module, and camera module 14 is a telephoto camera module, and the user interface 11 is a touchscreen, but this is not a limitation.

[0130] The user enters the shooting mode through the user interface 11, which displays the screen and allows manual adjustment of the shooting angle to switch between different camera modules 12, 13, and 14. At this time, the camera modules 12, 13, and 14 converge the imaging light onto their respective electronic photosensitive elements and output electronic signals related to the image to the image signal processing element (ISP) 15.

[0131] Depend on Figure 14A and Figure 14B As can be seen, depending on the camera specifications of the electronic device 10, the electronic device 10 may also include an optical image stabilization component (not shown in the figure). Furthermore, the electronic device 10 may also include at least one focus assist module (not shown in the figure) and at least one sensing element (not shown in the figure). The focus assist module may be a color temperature compensated flash module 16, an infrared rangefinder, a laser focus module, etc. The sensing element may have the function of sensing physical momentum and kinetic energy, such as an accelerometer, a gyroscope, or a Hall effect element, to sense the shaking and tremors caused by the user's hand or the external environment. This is beneficial to the autofocus function and optical image stabilization component configured in the imaging lens of the electronic device 10, so as to obtain good image quality and help the electronic device 10 according to the present disclosure to have multiple shooting modes, such as optimized Selfie, low light HDR (High Dynamic Range) imaging, and high resolution 4K video recording. In addition, users can directly view the camera's shooting screen through the user interface 11 and manually operate the framing range on the user interface 11 to achieve the WYSIWYG autofocus function.

[0132] Furthermore, the imaging lens, electronic image sensor, optical image stabilization assembly, sensing element, and focus assist module can be mounted on a flexible printed circuit board (FPC) (not shown), and electrically connected to the imaging signal processing element 15 and other related components via a connector (not shown) to execute the shooting process. Current electronic devices, such as smartphones, tend to be thinner and lighter. Mounting the imaging lens and related components on a flexible printed circuit board, and then using a connector to integrate the circuitry onto the mainboard of the electronic device, can meet the structural design and circuit layout requirements of the limited internal space of the electronic device and provide greater margin. It also allows for more flexible control of the camera module's autofocus function through the electronic device's touchscreen. In the third embodiment, the electronic device 10 may include multiple sensing elements and multiple focus assist modules. The sensing elements and focus assist modules are mounted on a flexible printed circuit board and at least one other flexible printed circuit board (not shown), and electrically connected to the imaging signal processing element 15 and other related components via corresponding connectors to execute the shooting process. In other embodiments (not shown in the figures), the sensing element and auxiliary optical element may also be mounted on the motherboard of the electronic device or other types of carrier boards, depending on the mechanical design and circuit layout requirements.

[0133] Furthermore, the electronic device 10 may further include, but is not limited to, a display unit, a control unit, a storage unit, random access memory (RAM), read-only memory (ROM), or a combination thereof.

[0134] Figure 14C Drawing according to Figure 14A A schematic diagram of an image captured by the electronic device 10 in the third embodiment. Figure 14C It can be seen that the camera module 12 (i.e., the ultra-wide-angle camera module) can capture images of a larger range and has the function of accommodating more scenery.

[0135] Figure 14D Drawing according to Figure 14A Another image diagram captured by the electronic device 10 in the third embodiment. (From...) Figure 14D It can be seen that the camera module 13 (i.e., the high-pixel camera module) can capture images within a certain range and also has high pixel count, with high resolution and low distortion.

[0136] Figure 14E Drawing according to Figure 14A A further image illustration captured by the electronic device 10 in the third embodiment. (By...) Figure 14E It can be seen that the camera module 14 (i.e., the telephoto camera module) has a high magnification function, which can capture images at a distance and magnify them to a high degree.

[0137] Depend on Figures 14C to 14E It can be seen that by using camera modules 12, 13, and 14 with different focal lengths for framing and combining them with image processing technology, the electronic device 10 can achieve the function of zooming.

[0138] <Fourth Implementation Method>

[0139] Please refer to Figure 15 The diagram illustrates the electronic device 20 according to the fourth embodiment of this disclosure. Figure 15 As can be seen, the electronic device 20 is a smartphone, and the electronic device 20 includes multiple camera modules 21, 22, 23, 24, 25, 26, 27, 28, and 29, each of which includes an imaging lens (not shown) and an electronic photosensitive element (not shown). The electronic photosensitive element is disposed on an imaging surface of the imaging lens (not shown). Specifically, the imaging lens can be the imaging lens of any of the embodiments of the first and second embodiments described above, but this disclosure is not limited thereto. Furthermore, camera modules 21 and 22 are ultra-wide-angle camera modules, camera modules 23 and 24 are wide-angle camera modules, and camera modules 25, 26, 27, and 28 are telephoto camera modules. Among them, camera modules 27 and 28 can be used to deflect light, and camera module 29 is a TOF module (Time-Of-Flight) and also includes other types of imaging lenses, not limited to the imaging lenses disclosed in this disclosure.

[0140] Depending on the camera specifications of the electronic device 20, the electronic device 20 may also include an optical image stabilization component (not shown). Furthermore, the electronic device 20 may also include at least one focus assist module (not shown) and at least one sensing element (not shown). The focus assist module may be a color temperature-compensating flash module 20a, an infrared rangefinder, a laser focus module, etc. The sensing element may 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 of the imaging lens in the electronic device 20 and the performance of the optical image stabilization component, resulting in good image quality. This helps the electronic device 20 according to this disclosure to have multiple shooting modes, such as optimized Selfie, low-light HDR (High Dynamic Range) imaging, and high-resolution 4K video recording.

[0141] Furthermore, the structure and arrangement of the remaining components in the fourth embodiment are the same as those in the third embodiment, and will not be described again here.

[0142] 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 appended claims.

Claims

1. An imaging lens, characterized in that, An imaging lens comprising: a plurality of optical lenses; a single-piece baffle corresponding to the plurality of optical lenses; and a lens barrel having a circular aperture corresponding to the plurality of optical lenses and the single-piece baffle; wherein the single-piece baffle has a central aperture corresponding to the lens barrel and the plurality of optical lenses, the central aperture defines a maximum aperture diameter, and the single-piece baffle comprises a plurality of baffle structures arranged around the central aperture, the plurality of baffle structures has a number of three to ten, a center of each of the baffle structures is closer to a center of the central aperture than two ends of each of the baffle structures, and the two ends of each of the baffle structures extend toward the maximum aperture diameter of the central aperture; wherein a maximum aperture radius of the central aperture is Rmax, a minimum inscribed circle radius of the central aperture defined around the center of each of the baffle structures is Rmin, and a true circle coefficient of the central aperture is tc, which satisfies the following condition: 0.41%≤tc≤10.2%, wherein tc=((Rmax-Rmin) / Rmax)×100%; wherein the single-piece baffle further comprises a plurality of radius structures arranged around the central aperture, the plurality of radius structures has a number of three to ten, each of the radius structures is connected to two adjacent ones of the baffle structures, and each of the radius structures is in a circular arc shape.

2. The imaging lens of claim 1, wherein, A radius of curvature of each of the radius structures is R, which satisfies the following condition: 0.25mm<R<4.2mm.

3. The imaging lens of claim 1, wherein, The maximum aperture radius of the central aperture is Rmax, and a radius of curvature of each of the radius structures is R, which satisfies the following condition: R=Rmax.

4. The imaging lens of claim 1, wherein, The plurality of radius structures and the plurality of baffle structures are alternately arranged around the central aperture.

5. The imaging lens of claim 1, wherein, A focal length of the imaging lens is f, the maximum aperture radius of the central aperture is Rmax, which satisfies the following condition: 0.9<F<3.25, wherein F=f / 2Rmax.

6. The imaging lens of claim 1, wherein, The single-piece baffle further comprises a plurality of radius structures arranged around the central aperture, each of the radius structures is connected to two adjacent ones of the baffle structures, each of the baffle structures is a straight line segment, and each of the radius structures is in a circular arc shape.

7. The imaging lens of claim 1, wherein, A true circle coefficient of the central aperture is tc, which satisfies the following condition: 0.83%≤tc≤8.6%.

8. The imaging lens of claim 7, wherein, A true circle coefficient of the central aperture is tc, which satisfies the following condition: 0.83%≤tc≤6.8%.

9. The imaging lens of claim 1, wherein, A true circle coefficient of the central aperture is tc, which satisfies the following condition: 0.68%≤tc≤4.1%.

10. The imaging lens of claim 1, wherein, The plurality of baffle structures has a number of five to nine.

11. The imaging lens of claim 1, wherein, A thickness of the single-piece baffle is S, which satisfies the following condition: 5μm<S<210μm.

12. An electronic device, comprising: An imaging lens comprising: the imaging lens of claim 1; and an electronic photosensitive element disposed on an image plane of the imaging lens.

Images