Imaging lens assembly, camera module and electronic device

Abstract

An imaging lens includes a plurality of lenses arranged sequentially along an optical axis, a plastic lens barrel, a frame element, and a gap, wherein the frame element is fixed to the plastic lens barrel. The plurality of lenses includes a glass lens and a first plastic lens, the first plastic lens being disposed within the plastic lens barrel. The plastic lens barrel includes a first inner surface and a first outer surface, the first plastic lens substantially contacting a first region of the first inner surface. The frame element includes a second inner surface, the second inner surface substantially contacting a second region of the first outer surface, and a gap is formed between the first outer surface and the second inner surface. The imaging lens further includes at least one first annular structure disposed on the first inner surface. This guides the lens deformation direction and maintains the structural strength.

Description

[Technical Field]

[0001] This disclosure relates to an imaging lens and camera module, and more particularly to an imaging lens and camera module used in a portable electronic device. [Previous Technology]

[0002] In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablets, which have become ubiquitous in modern life. Consequently, camera modules and imaging lenses mounted on these portable electronic devices have also flourished. However, as technology advances, users have increasingly higher demands for the quality of imaging lenses. Therefore, developing an imaging lens that can guide the direction of lens deformation and maintain the strength of the mechanism has become an important and urgent problem for the industry. [Summary of the Invention]

[0003] This disclosure provides an imaging lens, a camera module, and an electronic device, which can guide the lens deformation direction and maintain the structural strength through the configuration of optical elements and optical components, thereby improving optical quality.

[0004] According to one embodiment of the present disclosure, an imaging lens is provided, comprising a plurality of lenses, a plastic lens barrel, a frame element, and a gap, wherein the lenses are arranged sequentially along an optical axis, and the frame element is fixed to the plastic lens barrel. Each lens comprises a glass lens and a first plastic lens, the first plastic lens corresponding to the glass lens, and the first plastic lens being disposed within the plastic lens barrel. The plastic lens barrel comprises a first inner surface and a first outer surface, the first inner surface surrounding the optical axis, the first plastic lens substantially contacting a first region of the first inner surface, and the first outer surface being opposite to the first inner surface and further away from the first plastic lens than the first inner surface. The frame element comprises a second inner surface surrounding the optical axis and facing the first outer surface, the second inner surface substantially contacting a second region of the first outer surface. A gap is formed between the first outer surface and the second inner surface, extending from the second region along the direction of the optical axis, and the gap corresponds to the first region. The imaging lens further includes at least one first annular structure disposed on the first inner surface, the at least one first annular structure corresponding to the second region, and the at least one first annular structure surrounding the optical axis and extending away from the frame element.

[0005] The imaging lens according to the embodiment described above may further include a first annular element, which forms at least one first annular structure, and the first annular element may be in solid contact with a third region of the first inner surface.

[0006] In the imaging lens according to the embodiment described above, the hardness of the first annular element can be greater than that of the plastic lens barrel.

[0007] The imaging lens according to the embodiment described above, wherein the first inner surface and at least one first annular structure can be integrally formed.

[0008] In the imaging lens according to the embodiment described above, the frame element may include an extension structure that extends toward the optical axis, wherein one of the lenses may rest against the extension structure.

[0009] In the imaging lens according to the embodiment described above, the rigidity of the frame element can be greater than that of the plastic lens barrel.

[0010] In the imaging lens according to the embodiment described above, the second region and the first region may not overlap in the direction perpendicular to the optical axis.

[0011] According to the imaging lens of the embodiment described above, in a cross section of a parallel optical axis, the first plastic lens defines a lens diameter of D, and the plastic lens barrel in the first region has a barrel thickness of T, which can satisfy the following condition: 0.018 ≤ T / D ≤ 0.6.

[0012] According to the imaging lens of the embodiment described above, in the cross section parallel to the optical axis, the first plastic lens is defined with a lens diameter of D, and the plastic lens barrel in the first region has a barrel thickness of T, which can satisfy the following condition: 0.02 ≤ T / D ≤ 0.22.

[0013] According to the imaging lens of the embodiment described above, in the cross section parallel to the optical axis, the thickness of the plastic lens barrel in the first region is T, which can satisfy the following conditions: 0.22 mm ≤ T ≤ 3.0 mm.

[0014] In the imaging lens according to the embodiment described above, the minimum width of the gap corresponding to the first region on the cross section parallel to the optical axis is W, which can satisfy the following conditions: 0.0012 mm ≤ W ≤ 0.24 mm.

[0015] According to the imaging lens of the embodiment described above, at least one first annular structure is disposed in a third region on the first inner surface. In the direction parallel to the optical axis, the third region overlaps with the second region by a length of O, and the length of the plastic lens barrel is PBL, which can satisfy the following conditions: 0.012 ≤ O / PBL ≤ 0.42.

[0016] In the imaging lens according to the embodiment described above, the number of at least one first annular structure may be multiple.

[0017] The imaging lens according to the embodiment described above may further include a fixing element that fixes the plastic lens barrel and the frame element. The fixing element is disposed on the frame element and can be in physical contact with at least one of the lens and the plastic lens barrel.

[0018] According to the imaging lens of the embodiment described above, the lens may further include a second plastic lens, and at least one first annular structure is disposed between the second plastic lens and the first plastic lens. The second plastic lens may physically contact the first inner surface, and the second plastic lens may correspond to the gap.

[0019] In the imaging lens according to the embodiment described above, at least one first annular structure and a first plastic lens may be disposed adjacent to each other.

[0020] The imaging lens according to the embodiment described above may further include a second annular structure disposed on the first inner surface and corresponding to the gap. The second annular structure surrounds the optical axis and extends away from the gap. In a cross-section parallel to the optical axis, the width of the second annular structure corresponding to the gap may be narrower than the width of the first region corresponding to the gap. The minimum width of the second annular structure corresponding to the gap is WN, which satisfies the following condition: 0.004 mm ≤ WN ≤ 0.05 mm.

[0021] The imaging lens according to the embodiment described above, wherein the gap corresponds to the minimum width of the second annular structure as WN, which can satisfy the following conditions: 0.005 mm ≤ WN ≤ 0.04 mm.

[0022] The imaging lens according to the embodiment described above may further include a protruding structure disposed on the first outer surface of the plastic lens barrel and corresponding to the second annular structure. The protruding structure protrudes away from the second annular structure and can maintain a gap with the frame element.

[0023] The imaging lens according to the embodiment described above, wherein the protruding structure may include a plurality of sub-protruding structures, the sub-protruding structures being arranged at intervals between each other.

[0024] According to one embodiment of the present disclosure, a camera module is provided, including an imaging lens as described in the foregoing embodiments and an element carrier, wherein the frame element of the imaging lens is fixed to the element carrier.

[0025] According to one embodiment of the present disclosure, an electronic device is provided, which includes a camera module as described in the foregoing embodiments.

[0026] According to one embodiment of the present disclosure, an imaging lens is provided, comprising a plurality of lenses, a plastic lens barrel, a frame element, and a gap, wherein the lenses are arranged sequentially along an optical axis, and the frame element is fixed to the plastic lens barrel. Each lens comprises a glass lens and a first plastic lens, the first plastic lens being disposed corresponding to the glass lens and disposed within the plastic lens barrel. The plastic lens barrel comprises a first inner surface and a first outer surface, the first inner surface surrounding the optical axis, the first plastic lens substantially contacting a first region of the first inner surface, and the first outer surface being disposed opposite to the first inner surface and further away from the first plastic lens than the first inner surface. The frame element comprises a second inner surface surrounding the optical axis and facing the first outer surface, the second inner surface substantially contacting a second region of the first outer surface. A gap is formed between the first outer surface and the second inner surface, extending from the second region along the direction of the optical axis, and the gap corresponds to the first region. The imaging lens further includes at least one annular structure disposed on the first inner surface. The at least one annular structure corresponds to a gap and extends around the optical axis away from the gap. In a cross-section parallel to the optical axis, the width of the at least one annular structure corresponding to the gap is narrower than the width of the first region corresponding to the gap. The minimum width of the at least one annular structure corresponding to the gap is WN, which satisfies the following condition: 0.004 mm ≤ WN ≤ 0.05 mm.

[0027] The imaging lens according to the embodiment described above may further include a protruding structure disposed on the first outer surface of the plastic lens barrel and corresponding to at least one annular structure. The protruding structure protrudes in a direction away from the at least one annular structure and can maintain a gap with the frame element.

[0028] The imaging lens according to the embodiment described above, wherein the protruding structure may include a plurality of sub-protruding structures, the sub-protruding structures being arranged at intervals between each other.

[0029] In the imaging lens according to the embodiment described above, the minimum width of the gap corresponding to the first region on the cross section parallel to the optical axis is W, which can satisfy the following conditions: 0.0012 mm ≤ W ≤ 0.24 mm.

[0030] In the imaging lens according to the embodiment described above, the second region and the first region may not overlap in the cross section parallel to the optical axis.

[0031] According to the imaging lens of the embodiment described above, in the cross section parallel to the optical axis, the first plastic lens defines a lens diameter of D, and the plastic lens barrel in the first region has a barrel thickness of T, which can satisfy the following condition: 0.018 ≤ T / D ≤ 0.6.

[0032] In the imaging lens according to the embodiment described above, the number of at least one annular structure may be multiple.

[0033] According to the imaging lens of the embodiment described above, the lens may further include a second plastic lens, and at least one annular structure is disposed between the first plastic lens and the second plastic lens. The second plastic lens may physically contact the first inner surface, and the second plastic lens may correspond to the gap.

[0034] In the imaging lens according to the embodiment described above, at least one annular structure may be disposed adjacent to the first plastic lens.

Implementation Method

[0036] One embodiment of this disclosure provides an imaging lens comprising a plurality of lenses, a plastic lens barrel, a frame element, and a gap, wherein the lenses are arranged sequentially along an optical axis, and the frame element is fixed to the plastic lens barrel. Each lens comprises a glass lens and a first plastic lens, the first plastic lens corresponding to the glass lens and disposed within the plastic lens barrel. The plastic lens barrel comprises a first inner surface and a first outer surface, the first inner surface surrounding the optical axis, the first plastic lens substantially contacting a first region of the first inner surface, and the first outer surface being disposed opposite to the first inner surface and further away from the first plastic lens than the first inner surface. The frame element comprises a second inner surface surrounding the optical axis and facing the first outer surface, the second inner surface substantially contacting a second region of the first outer surface. A gap is formed between the first outer surface and the second inner surface, extending from the second region along the optical axis, and the gap corresponds to the first region. The imaging lens further includes at least one first annular structure disposed on a first inner surface. This first annular structure corresponds to a second region and extends around the optical axis away from the frame elements. The imaging lens also includes a glass lens and a first plastic lens, thereby improving optical quality and reducing the impact of the environment on the imaging lens. The first region where the first plastic lens contacts the plastic lens barrel corresponds to a gap, thereby providing margin for the expansion of the first plastic lens in the direction perpendicular to the optical axis and guiding the deformation direction of the first plastic lens. Furthermore, the first annular structure corresponds to the second region to enhance the mechanical strength of the second region, thereby reducing the impact of the environment on the size of the imaging lens.

[0037] Specifically, the frame element can be a sleeve, frame, base, or lens holding element, and is not limited thereto. Furthermore, the frame element can be fixed to the plastic lens barrel by threaded engagement, adhesive application, mechanical engagement, or a combination of methods, and is not limited thereto.

[0038] The imaging lens may further include a first annular element forming a first annular structure, the first annular element being in solid contact with a third region of the first inner surface. This increases the degree of freedom in assembly.

[0039] The hardness of the first annular element can be greater than that of the plastic lens barrel. This further enhances the axial deformation resistance of the plastic lens barrel, thereby improving the impact resistance of the imaging lens. Specifically, the first annular element can be a metal element, a ceramic element, or a plastic element with added glass fiber, but is not limited to these.

[0040] The first inner surface and the first annular structure can be integrally formed. This reduces the number of components used and simplifies the assembly process.

[0041] The frame element may include an extension structure that extends toward the optical axis, wherein one of the lenses may rest against the extension structure. This further enhances the frame element's ability to maintain the lens while reducing the number of elements used.

[0042] The rigidity of the frame element can be greater than that of the plastic lens barrel. This helps maintain the size of the plastic lens barrel under environmental changes, thereby extending the lifespan of the imaging lens. Specifically, the frame element can be a metal element, a ceramic element, or a plastic element with added glass fiber, but is not limited to these.

[0043] In the direction perpendicular to the optical axis, the second region may not overlap with the first region. This ensures the deformation margin of the first plastic lens in the direction perpendicular to the optical axis.

[0044] In a cross-section parallel to the optical axis, the first plastic lens is defined with a lens diameter of D and a plastic barrel thickness of T in the first region, which satisfies the following condition: 0.018 ≤ T / D ≤ 0.6. This guides the direction of lens deformation while maintaining the lens spacing. Furthermore, in a cross-section parallel to the optical axis, the first plastic lens is defined with a lens diameter of D and a plastic barrel thickness of T in the first region, which satisfies the following condition: 0.02 ≤ T / D ≤ 0.22.

[0045] In a cross-section parallel to the optical axis, the thickness of the plastic lens barrel in the first region is T, which satisfies the following condition: 0.22 mm ≤ T ≤ 3.0 mm. This provides sufficient support and prevents the plastic lens from being squeezed during deformation.

[0046] On the cross-section parallel to the optical axis, the minimum width of the gap corresponding to the first region is W, which satisfies the following condition: 0.0012 mm ≤ W ≤ 0.24 mm. This improves the stability of the mechanism and thus increases yield while maintaining sufficient deformation margin.

[0047] A first annular structure is disposed in a third region on the first inner surface. In the direction parallel to the optical axis, the third region overlaps with the second region by a length of 0. The length of the plastic lens barrel is PBL, which satisfies the following condition: 0.012 ≤ 0 / PBL ≤ 0.42. This prevents the frame components from detaching when the plastic part deforms, thereby improving the lens lifespan.

[0048] The number of the first annular structures can be multiple. This can further maintain the spacing between the lenses to ensure optical quality.

[0049] The imaging lens may further include a fixing element that fixes the plastic lens barrel and the frame element. The fixing element is disposed on the frame element and can be in physical contact with at least one of the lens and the plastic lens barrel. This improves the stability of the fixation between the frame element and the plastic lens barrel. Specifically, the fixing element may be a cover element, an adhesive, or a combination of multiple elements, or it may be a fixing adhesive generated by melting some of the elements by means of temperature, chemicals, etc., but is not limited thereto.

[0050] The lens may further include a second plastic lens, with the first annular structure disposed between the second plastic lens and the first plastic lens. The second plastic lens may physically contact the first inner surface and may correspond to the gap. Thus, the first annular structure has the function of maintaining the lens spacing, which can further improve optical performance.

[0051] The first annular structure and the first plastic lens can be arranged adjacent to each other. This further maintains the fit between the first plastic lens and the first annular structure, thereby improving assembly efficiency.

[0052] The imaging lens may further include a second annular structure disposed on the first inner surface. In the direction perpendicular to the optical axis, the second annular structure corresponds to the gap, and the second annular structure surrounds the optical axis and extends away from the gap. In a cross-section parallel to the optical axis, the width of the gap corresponding to the second annular structure may be narrower than the width of the gap corresponding to the first region. The minimum width of the gap corresponding to the second annular structure is WN, which satisfies the following condition: 0.004 mm ≤ WN ≤ 0.05 mm. The narrower width of the gap corresponding to the interval improves the mechanical strength of the imaging lens while maintaining lens expansion margin, thereby enhancing the stability of the overall optical system. Furthermore, the minimum width of the gap corresponding to the second annular structure, WN, satisfies the following condition: 0.005 mm ≤ WN ≤ 0.04 mm.

[0053] The imaging lens may further include a protruding structure disposed on the first outer surface of the plastic lens barrel and corresponding to the second annular structure. The protruding structure protrudes away from the second annular structure and maintains a gap with the frame element. This enhances the mechanical strength of the third region to control deformation of the plastic lens barrel.

[0054] The protruding structure may include a plurality of sub-protruding structures, which are arranged at intervals. This allows for the flow of material through the gaps on both sides of the protruding structure after deformation, thereby further maintaining the deformation margin of the first plastic lens.

[0055] The various technical features in the imaging lens module disclosed above can be combined and configured to achieve corresponding effects.

[0056] This disclosure provides a camera module comprising the aforementioned imaging lens and a component carrier, wherein the frame element of the imaging lens is fixed to the component carrier. This prevents deformation of the plastic lens barrel during assembly, thereby improving assembly yield. Specifically, the component carrier may further have the functionality of driving the imaging lens to achieve autofocus and optical image stabilization, but is not limited thereto.

[0057] This disclosure provides an electronic device that includes the aforementioned camera module.

[0058] One embodiment of this disclosure provides an imaging lens comprising a plurality of lenses, a plastic lens barrel, a frame element, and a gap, wherein the lenses are arranged sequentially along an optical axis, and the frame element is fixed to the plastic lens barrel. Each lens comprises a glass lens and a first plastic lens, the first plastic lens corresponding to the glass lens and disposed within the plastic lens barrel. The plastic lens barrel comprises a first inner surface and a first outer surface, the first inner surface surrounding the optical axis, the first plastic lens substantially contacting a first region of the first inner surface, and the first outer surface being disposed opposite to the first inner surface and further away from the first plastic lens than the first inner surface. The frame element comprises a second inner surface surrounding the optical axis and facing the first outer surface, the second inner surface substantially contacting a second region of the first outer surface. A gap is formed between the first outer surface and the second inner surface, extending from the second region along the optical axis, and the gap corresponds to the first region. The imaging lens further includes at least one annular structure disposed on the first inner surface. This at least one annular structure corresponds to a gap and extends around the optical axis away from the gap. In a cross-section parallel to the optical axis, the width of the at least one annular structure corresponding to the gap is narrower than the width of the first region corresponding to the gap. The minimum width of the at least one annular structure corresponding to the gap is WN, which satisfies the following condition: 0.004 mm ≤ WN ≤ 0.05 mm. Thus, the imaging lens simultaneously includes both a glass lens and a plastic lens, improving optical quality and reducing the influence of the environment on the imaging lens. Furthermore, the first region where the first plastic lens contacts the plastic lens barrel corresponds to the gap, thereby providing margin for expansion of the first plastic lens in the direction perpendicular to the optical axis to control the deformation of the first plastic lens. Moreover, the narrower width of the annular structure corresponding to the gap than the width of the first region prevents the plastic lens from being affected when the plastic lens barrel is compressed by the frame elements, thereby maintaining optical quality.

[0059] Specifically, the frame element may be a sleeve, frame, base, lens holding element, and is not limited thereto.

[0060] The imaging lens may further include a protruding structure disposed on the first outer surface of the plastic lens barrel and corresponding to at least one annular structure. The protruding structure protrudes away from the at least one annular structure and can maintain a gap with the frame element. This improves mechanical strength to control deformation of the plastic lens barrel.

[0061] The protruding structure may include a plurality of sub-protruding structures, which are arranged at intervals. This allows for the flow of material through the gaps on both sides of the protruding structure after deformation, thereby further maintaining the deformation margin of the first plastic lens.

[0062] On the cross-section parallel to the optical axis, the minimum width of the gap corresponding to the first region is W, which satisfies the following condition: 0.0012 mm ≤ W ≤ 0.24 mm. This improves the stability of the mechanism and thus increases yield while maintaining sufficient deformation margin.

[0063] In a cross-section parallel to the optical axis, the second region may not overlap with the first region. This ensures the deformation margin of the first plastic lens in the direction perpendicular to the optical axis.

[0064] In a cross-section parallel to the optical axis, the first plastic lens is defined with a lens diameter of D, and the plastic barrel in the first region has a barrel thickness of T, which satisfies the following condition: 0.018 ≤ T / D ≤ 0.6. This guides the direction of lens deformation while maintaining the lens spacing.

[0065] The number of at least one annular structure can be multiple. This can further maintain the spacing between the lenses to ensure optical quality.

[0066] The lens may further include a second plastic lens, with at least one annular structure disposed between the first and second plastic lenses. The second plastic lens may physically contact the first inner surface and may correspond to the gap. Thus, the at least one annular structure has the function of maintaining the lens spacing, which can further improve optical performance.

[0067] At least one annular structure may be disposed adjacent to the first plastic lens. This further maintains the mating relationship between the first plastic lens and the annular structure, thereby improving assembly efficiency.

[0068] The various technical features in the imaging lens module disclosed above can be combined and configured to achieve corresponding effects.

[0069] Based on the above embodiments, specific examples are presented below and described in detail with reference to the accompanying drawings.

[0070] <First Embodiment>

[0071] Please refer to Figure 1A, which shows a schematic diagram of the camera module 10 according to the first embodiment of this disclosure. As can be seen from Figure 1A, the camera module 10 includes an imaging lens 100 and an element carrier C10.

[0072] Please refer to Figures 1B, 1C, and 1D, wherein Figure 1B shows an exploded view of the camera module 10 according to the first embodiment of Figure 1A, Figure 1C shows a cross-sectional view of the camera module 10 according to the first embodiment of Figure 1A, and Figure 1D shows a cross-sectional view of the imaging lens 100 according to the first embodiment of this disclosure. As shown in Figures 1B to 1D, the imaging lens 100 includes a plurality of lenses, a plastic lens barrel 120, a frame element 130, and a first annular structure (not shown), wherein a first annular element 151 forms the first annular structure. The plurality of lenses are a first lens 111, a second lens 112, a third lens 113, a fourth lens 114, a fifth lens 115, a sixth lens 116, a seventh lens 117, and an eighth lens 118 arranged sequentially along an optical axis X. The frame element 130 is fixed to the plastic lens barrel 120, and the frame element 130 may include a first frame element 131 and a second frame element 132. Furthermore, the imaging lens 100 may further include a second annular structure (not shown), wherein a second annular element 152 forms the second annular structure. In addition, the hardness of the first frame element 131 and the second frame element 132 may be greater than that of the plastic lens barrel 120, and the hardness of the first annular element 151 may be greater than that of the plastic lens barrel 120.

[0073] In detail, the component carrier C10 may include an electronic component carrier C11, a photosensitive element C12 and a base C13, and the second frame element 132 of the imaging lens 100 is fixed to the component carrier C10.

[0074] In addition, the imaging lens 100 may further include a protruding structure 160 disposed in the plastic lens barrel 120, wherein the protruding structure 160 may include a plurality of sub-protruding structures 161, the sub-protruding structures 161 being arranged at intervals from each other.

[0075] Specifically, the first lens 111, the third lens 113, the fourth lens 114, and the fifth lens 115 are all glass lenses, and the second lens 112, the sixth lens 116, the seventh lens 117, and the eighth lens 118 are all plastic lenses. The plastic lenses are arranged in correspondence with the glass lenses, that is, the first lens 111 and the third lens 113 are respectively arranged in correspondence with the second lens 112, the fifth lens 115 is arranged in correspondence with the sixth lens 116, and the plastic lenses (i.e., the second lens 112, the sixth lens 116, the seventh lens 117, and the eighth lens 118) are disposed in the plastic lens barrel 120.

[0076] Further, the frame element 130 may include two extension structures 133, one extension structure 133 being disposed on the first frame element 131 and the other extension structure 133 being disposed on the second frame element 132. The two extension structures 133 extend in a direction close to the optical axis X, wherein at least one of the lenses of the imaging lens 100 may rest on one of the extension structures 133. Specifically, the extension structure 133 of the first frame element 131 can be used to position the first lens 111, and the extension structure 133 of the second frame element 132 can be used to position the eighth lens 118.

[0077] Furthermore, the camera module 10 may further include a sealing element 170 disposed between the first lens 111 and the plastic lens barrel 120. Additionally, the camera module 10 may further include a filter 180 disposed on the image side of the imaging lens 100.

[0078] Please refer to Figures 1C, 1E to 1G, wherein Figure 1E shows an enlarged view of region 1E of the camera module 10 according to the first embodiment of Figure 1C, Figure 1F shows an enlarged view of region 1F of the camera module 10 according to the first embodiment of Figure 1C, and Figure 1G shows an enlarged view of region 1G according to Figure 1F. As can be seen from Figures 1C, 1E and 1F, the plastic lens barrel 120 includes a first inner surface 121 and a first outer surface 123. The first inner surface 121 surrounds the optical axis X, and the second lens 112, the seventh lens 117 and the eighth lens 118 of the plastic lens are respectively in solid contact with the first region 122 of their corresponding first inner surface 121. The first outer surface 123 is disposed opposite to the first inner surface 121 and is farther away from the aforementioned plastic lens than the first inner surface 121.

[0079] The first frame element 131 and the second frame element 132 of the frame element 130 respectively include second inner surfaces 1341 and 1342, which surround the optical axis X and face the first outer surface 123 respectively. The second inner surfaces 1341 and 1342 respectively physically contact the second regions 1351 and 1352 of the first outer surface 123.

[0080] The imaging lens 100 includes a gap 1401, which is formed between the first outer surface 123 and the second inner surface 1341. The gap 1401 extends from its corresponding second region 1351 along the optical axis X, and the gap 1401 corresponds to its corresponding first region 122. A gap 1402 is formed between the first outer surface 123 and the second inner surface 1342, and the gap 1402 extends from its corresponding second region 1352 along the optical axis X, and the gap 1402 corresponds to its corresponding first region 122. Furthermore, in the direction perpendicular to the optical axis X, the second region 1351 and the first region 122 may not overlap, and the second region 1352 and the first region 122 may not overlap.

[0081] The imaging lens 100 may further include two first annular elements 151, which form a first annular structure. The first annular structure is disposed on the first inner surface 121 and corresponds to the second regions 1351 and 1352. The first annular structure surrounds the optical axis X and extends in a direction away from the first frame element 131 and the second frame element 132, respectively.

[0082] The two first annular elements 151 can respectively physically contact the two third regions 153 of the first inner surface 121, wherein the first annular structure formed by the first inner surface 121 and the two first annular elements 151 can be integrally formed. Furthermore, the first annular structure is disposed in the two third regions 153 of the first inner surface 121. Further, the number of first annular structures can be multiple, and the first annular structures can be disposed adjacent to at least one of the plastic lenses.

[0083] The imaging lens 100 may further include a second annular element 152, which forms a second annular structure. The second annular structure is disposed on the first inner surface 121, and the second annular structure corresponds to the gap 1402. The second annular structure surrounds the optical axis X and extends in a direction away from the gap 1402. In a cross section parallel to the optical axis X, the width of the second annular structure corresponding to the gap 1402 may be narrower than the width of the first region 122 corresponding to the gap 1402.

[0084] Specifically, the second annular structure entity contacts a third region 155 on the first inner surface 121. The difference between the third region 153 and the third region 155 is that the third region 153 corresponds to the second region 1352, while the third region 155 corresponds to the gap 1402.

[0085] As shown in Figures 1E and 1F, the second inner surfaces 1341 and 1342 may have threads, so that the second region 1351 of the plastic lens barrel 120 is in solid contact with the first frame element 131, and the second region 1352 is in solid contact with the second frame element 132. Specifically, the imaging lens 100 may further include fixing elements (not shown in the figures), which may be two colloids G, respectively disposed in the second regions 1351 and 1352, for positioning the plastic lens barrel 120 and the first frame element 131, and for positioning the plastic lens barrel 120 and the second frame element 132.

[0086] Referring to Figure 1G, the protruding structure 160 is disposed on the first outer surface 123 of the plastic lens barrel 120 and corresponds to the second annular structure. The protruding structure 160 protrudes away from the second annular structure and can maintain a gap 1402 with the second frame element 132.

[0087] Specifically, the materials of the first frame element 131 and the second frame element 132 may be aluminum alloy, the material of the plastic lens barrel 120 may be plastic, and the materials of the first annular element 151 and the second annular element 152 may be plastic containing glass fiber.

[0088] As shown in Figures 1D to 1G, on the cross-section parallel to the optical axis X, the second lens 112 defines a lens diameter of D2, the seventh lens 117 defines a lens diameter of D7, and the eighth lens 118 defines a lens diameter of D8. The plastic lens barrel 120 corresponds to the second lens 112 in the first region 122 with a barrel thickness of T2. The plastic lens barrel 120 corresponds to the seventh lens 117 in the first region 122 with a barrel thickness of T7. The plastic lens barrel 120 corresponds to the eighth lens 118 in the first region 122 with a barrel thickness of T8. The gap 1401 corresponds to the minimum width of the first region 122 at the second lens 112 with a width of W2. The gap 1402 corresponds to the minimum width of the sixth lens 116 with a width of W6. The gap 1402 corresponds to the minimum width of the first region 122 at the eighth lens 118 with a width of W8. The gap 1402 corresponds to the minimum width of the second annular structure with a width of WN4. Furthermore, in the direction parallel to the optical axis X, the length of overlap between the third region 153 and the second region 1351 between the second lens 112 and the third lens 113 is O1, the length of overlap between the third region 153 and the second region 1352 between the sixth lens 116 and the fifth lens 115 is O2, and the length of the plastic lens barrel 120 is PBL1. The parameters satisfy the conditions in Table 1 below. Table 1. First Implementation Method D2 (mm) 8.86 T2 / D2 0.30 D7 (mm) 14.0 T7 / D7 0.05 D8 (mm) 14.2 T8 / D8 0.04 T2 (mm) 2.69 O1 / PBL1 0.035 T7 (mm) 0.7 O2 / PBL1 0.046 T8 (mm) 0.58 O1 (mm) 0.79 W2 (mm) 0.02 O2 (mm) 1.03 W6 (mm) 0.03 PBL1 (mm) 22.56 W8 (mm) 0.038 WN4 (mm) 0.01

[0089] It must be noted that T2, T7, and T8 as defined in the aforementioned first embodiment can be regarded as T as defined in this disclosure; D2, D7, and D8 as defined in the aforementioned first embodiment can be regarded as D as defined in this disclosure; W2, W6, and W8 as defined in the aforementioned first embodiment can be regarded as W as defined in this disclosure; O1 and O2 as defined in the aforementioned first embodiment can be regarded as O as defined in this disclosure; PBL1 as defined in the aforementioned first embodiment can be regarded as PBL as defined in this disclosure; and WN4 as defined in the aforementioned first embodiment can be regarded as WN as defined in this disclosure.

[0090] <Second Implementation Method>

[0091] Please refer to Figure 2A, which is a schematic diagram of the camera module 20 according to the second embodiment of the present disclosure. As shown in Figure 2A, the camera module 20 includes an imaging lens 200 and a component carrier C20.

[0092] Please refer to Figures 2B, 2C, and 2D, wherein Figure 2B shows an exploded view of the camera module 20 according to the second embodiment of Figure 2A, Figure 2C shows a cross-sectional view of the camera module 20 according to the second embodiment of Figure 2A, and Figure 2D shows a cross-sectional view of the imaging lens 200 according to the second embodiment of this disclosure. As shown in Figures 2B to 2D, the imaging lens 200 includes a plurality of lenses, a plastic lens barrel 220, a frame element 230, and a first annular structure (not shown). The plurality of lenses are a first lens 211, a second lens 212, a third lens 213, a fourth lens 214, a fifth lens 215, and a sixth lens 216 arranged sequentially along an optical axis X, wherein the lens of the imaging lens 200 may include a first plastic lens and a second plastic lens, and the first annular structure may be disposed between the second plastic lens and the first plastic lens. The plastic lens barrel 220 may include a first plastic lens barrel 224 and a second plastic lens barrel 225. The imaging lens 200 may further include a first annular element 2514, which forms a first annular structure. Furthermore, the imaging lens 200 may further include a second annular structure (not shown), wherein a second annular element 252 forms a second annular structure. Additionally, the rigidity of the frame element 230 may be greater than that of the plastic lens barrel 220, and the rigidity of the first annular element 2514 may be greater than that of the plastic lens barrel 120.

[0093] In detail, the component carrier C20 may include an electronic component carrier C21, a photosensitive element C22 and a base C23, and the frame element 230 of the imaging lens 200 is fixed to the component carrier C20.

[0094] In addition, the imaging lens 200 may further include a protruding structure 260 disposed on the first plastic lens barrel 224.

[0095] Specifically, the first lens 211 is a glass lens, and the second lens 212, third lens 213, fourth lens 214, fifth lens 215, and sixth lens 216 are plastic lenses. The plastic lenses are correspondingly arranged with the glass lenses, that is, the first lens 211 and the second lens 212 are correspondingly arranged, and the plastic lenses (i.e., the second lens 212, third lens 213, fourth lens 214, fifth lens 215, and sixth lens 216) are disposed within the plastic lens barrel 220. Furthermore, the imaging lens 200 may further include a third annular element 254, which is located between the first lens 211 and the second lens 212, for positioning the first lens 211 and the second lens 212.

[0096] Furthermore, the imaging lens 200 may further include a fixing element 290, which fixes the plastic lens barrel 220 and the frame element 230. The fixing element 290 is disposed on the frame element 230 and can be in physical contact with at least one of the lens and the plastic lens barrel 220. In addition, the fixing element 290 may include a cover element 291 and a gel G, which can be used to position the first lens 211.

[0097] Please refer to Figures 2C, 2E, and 2F, wherein Figure 2E shows an enlarged view of region 2E of the camera module 20 according to the second embodiment of Figure 2C, and Figure 2F shows an enlarged view of region 2F of the camera module 20 according to the second embodiment of Figure 2C. As can be seen from Figures 2C, 2E, and 2F, the first plastic lens barrel 224 includes a first inner surface 2214 and a first outer surface 2234, and the second plastic lens barrel 225 includes a first inner surface 2215 and a first outer surface 2235. The first inner surface 2214 of the first plastic lens barrel 224 surrounds the optical axis X, and the first inner surface 2215 of the second plastic lens barrel 225 surrounds the optical axis X. Furthermore, the second lens 212, third lens 213, fourth lens 214, and sixth lens 216 of the plastic lens are respectively in solid contact with the first region 2224 of the corresponding first inner surface 2214 and the first region 2225 of the first inner surface 2215. The first outer surface 2234 is disposed opposite to the first inner surface 2214 and is in solid contact with the plastic lens that is further away from its corresponding first inner surface 2214. The first outer surface 2235 is disposed opposite to the first inner surface 2215 and is in solid contact with the plastic lens that is further away from its corresponding first inner surface 2215. The frame element 230 includes a second inner surface 234 that surrounds the optical axis X and faces the first outer surfaces 2234 and 2235, and the second inner surface 234 is in solid contact with one of the second regions 2354 and 2355 of the first outer surfaces 2234 and 2235. Specifically, the frame element 230 makes physical contact with the second region 2354 of the first plastic lens barrel 224 and the second region 2355 of the second plastic lens barrel 225, wherein the first plastic lens barrel 224 and the second plastic lens barrel 225 are sized to fit the frame element 230 to achieve physical contact.

[0098] The imaging lens 200 includes gaps 2404 and 2405. Gap 2404 is formed between the first outer surface 2234 and the second inner surface 234, and extends from the second region 2354 along the optical axis X. Gap 2404 corresponds to its corresponding first region 2224. Gap 2405 is formed between the first outer surface 2235 and the second inner surface 234, and extends from the second region 2355 along the optical axis X. In the direction perpendicular to the optical axis X, gap 2405 overlaps with its corresponding first region 2225. Furthermore, in the direction perpendicular to the optical axis X, the second region 2354 and the first region 2224 may not overlap, and the second region 2355 and the first region 2225 may not overlap.

[0099] In addition, the second lens 212, the third lens 213 and the fourth lens 214 of the plastic lens have a corresponding gap of 2404, and the sixth lens 216 of the plastic lens has a corresponding gap of 2405.

[0100] The imaging lens 200 may further include a first annular element 2514, which forms a first annular structure. The first annular structure is disposed on the first inner surface 2214, 2215, and the first annular structure overlaps with the second region 2354, 2355. The first annular structure surrounds the optical axis X and extends in a direction away from the frame element 230.

[0101] Furthermore, the first annular structure formed by the first annular element 2514 can substantially contact a third region 2534 of the first inner surface 2214, and the first inner surface 2214 and the first annular structure can be integrally formed. In addition, the first annular structure is disposed in the third region 2534 of the first inner surface 2214. Furthermore, the first annular structure and at least one of the plastic lenses can be disposed adjacent to each other.

[0102] The imaging lens 200 may further include a second annular element 252, which forms a second annular structure. The second annular structure formed by the second annular element 252 is disposed on the first inner surface 2214 and corresponds to a gap 2404. The second annular structure surrounds the optical axis X and extends in a direction away from the gap 2404. In a cross section parallel to the optical axis X, the width of the second annular structure corresponding to the gap 2404 may be narrower than the width of the first region 2224 corresponding to the gap 2404.

[0103] Specifically, the second annular structure entity contacts the third region 255 of the first inner surface 2214.

[0104] As shown in Figures 2C, 2E, and 2F, the second inner surface 234 may have threads, causing the second region 2354 of the first plastic lens barrel 224 to make solid contact with the frame element 230, and causing the second region 2355 of the second plastic lens barrel 225 to make solid contact with the frame element 230. Furthermore, the imaging lens 200 may further include two colloids G, one of which is disposed on the first inner surface 2215 to position the fifth lens 215 and the sixth lens 216, and the other colloid G is disposed between the first outer surface 2235 and the second inner surface 234 to position the second plastic lens barrel 225 and the frame element 230.

[0105] As shown in Figure 2E, the protruding structure 260 is disposed on the first outer surface 2234 of the first plastic lens barrel 224 and corresponds to the second annular structure formed by the second annular element 252. The protruding structure 260 protrudes away from the second annular structure and can maintain a gap 2404 with the frame element 230.

[0106] Furthermore, as shown in Figure 2F, the surface of the second plastic lens barrel 225 facing the optical axis X (i.e., the first inner surface 2215) may have another first annular structure 2251. The first annular structure 2251 surrounds the optical axis X and extends in a direction away from the frame element 230, and is used to position the sixth lens 216. In addition, the first annular structure 2251 is disposed in the third region 2535 of the first inner surface 2215.

[0107] Specifically, the materials of the frame element 230, the fixing element 290, the first annular element 2514 and the second annular element 252 can be copper alloys, and the materials of the first plastic lens barrel 224 and the second plastic lens barrel 225 can be plastic.

[0108] As shown in Figures 2D to 2F, on the cross-section parallel to the optical axis X, the second lens 212 defines a lens diameter of D2, the third lens 213 defines a lens diameter of D3, the fourth lens 214 defines a lens diameter of D4, and the sixth lens 216 defines a lens diameter of D6. The thickness of the first plastic lens barrel 224 corresponding to the second lens 212 in the first region 2224 is T2, the thickness of the first plastic lens barrel 224 corresponding to the third lens 213 in the first region 2224 is T3, and the thickness of the first plastic lens barrel 224 corresponding to the fourth lens 214 in the first region 2224 is T3. The thickness of the lens barrel is T4. The thickness of the second plastic lens barrel 225 corresponding to the sixth lens 216 in the first region 2225 is T6. The minimum width of the gap 2404 corresponding to the first region 2224 at the second lens 212 is W2. The minimum width of the gap 2404 corresponding to the first region 2224 at the third lens 213 is W3. The minimum width of the gap 2404 corresponding to the first region 2224 at the fourth lens 214 is W4. The minimum width of the gap 2405 corresponding to the first region 2225 at the sixth lens 216 is W6. The minimum width of the gap 2404 corresponding to the second annular structure is WN4. Furthermore, in the direction parallel to the optical axis X, the length of overlap between the third region 2534 and the second region 2354 between the second lens 212 and the third lens 213 is O1, the length of overlap between the third region 2535 and the second region 2355 adjacent to the sixth lens 216 is O2, the length of the first plastic lens barrel 224 is PBL1, and the length of the second plastic lens barrel 225 is PBL2. These parameters satisfy the conditions in Table 2 below. Table 2, Second Implementation Method D2 (mm) 7.2 T2 / D2 0.07 D3 (mm) 6.1 T3 / D3 0.07 D4 (mm) 5.9 T4 / D4 0.11 D6 (mm) 6.0 T6 / D6 0.08 T2 (mm) 0.5 O1 / PBL1 0.119 T3 (mm) 0.45 O2 / PBL2 0.206 T4 (mm) 0.65 O1 (mm) 0.94 T6 (mm) 0.5 O2 (mm) 1.03 W2 (mm) 0.1 PBL1 (mm) 7.88 W3 (mm) 0.12 PBL2 (mm) 5.0 W4 (mm) 0.12 WN4 (mm) 0.02 W6 (mm) 0.1

[0109] It must be noted that T2, T3, T4, and T6 defined in the aforementioned second embodiment can be regarded as T as defined in this disclosure; D2, D3, D4, and D6 defined in the aforementioned second embodiment can be regarded as D as defined in this disclosure; W2, W3, W4, and W6 defined in the aforementioned second embodiment can be regarded as W as defined in this disclosure; O1 and O2 defined in the aforementioned second embodiment can be regarded as O as defined in this disclosure; PBL1 and PBL2 defined in the aforementioned second embodiment can be regarded as PBL as defined in this disclosure; and WN4 defined in the aforementioned second embodiment can be regarded as WN as defined in this disclosure.

[0110] <Third Embodiment>

[0111] Please refer to Figure 3A, which shows a schematic diagram of the camera module 30 according to the third embodiment of this disclosure. As can be seen from Figure 3A, the camera module 30 includes an imaging lens 300 and an element carrier C30.

[0112] Please refer to Figures 3B, 3C, and 3D, where Figure 3B is an exploded view of the camera module 30 according to the third embodiment of Figure 3A, Figure 3C is a cross-sectional view of the camera module 30 according to the third embodiment of Figure 3A, and Figure 3D is a cross-sectional view of the imaging lens 300 according to the third embodiment of this disclosure. As shown in Figures 3B to 3D, the imaging lens 300 includes a plurality of lenses, a plastic lens barrel 320, a frame element 330, and an annular structure (not shown), wherein a first annular element 351 forms the first annular structure. The plurality of lenses are a first lens 311, a second lens 312, a third lens 313, a fourth lens 314, a fifth lens 315, a sixth lens 316, and a seventh lens 317 arranged sequentially along an optical axis X. The frame element 330 is fixed to the plastic lens barrel 320. In addition, the frame element 330 can have a higher hardness than the plastic lens barrel 320, and the first annular element 351 can have a higher hardness than the plastic lens barrel 320.

[0113] In detail, the component carrier C30 may include an electronic component carrier C31 and a photosensitive element C32, and the frame element 330 of the imaging lens 300 is fixed to the component carrier C30.

[0114] Specifically, the first lens 311 is a glass lens, and the second lens 312, the third lens 313, the fourth lens 314, the fifth lens 315, the sixth lens 316, and the seventh lens 317 are all plastic lenses. The plastic lenses are arranged correspondingly to the glass lenses, that is, the first lens 311 is arranged correspondingly to the second lens 312, and the plastic lenses (i.e., the second lens 312, the third lens 313, the fourth lens 314, the fifth lens 315, the sixth lens 316, and the seventh lens 317) are disposed in the plastic lens barrel 320.

[0115] Furthermore, the camera module 30 may further include a sealing element 370 disposed between the first lens 311 and the plastic lens barrel 320. Additionally, the camera module 30 may further include a filter 380 disposed on the image side of the imaging lens 300.

[0116] Please refer to Figures 3C, 3D, and 3E, wherein Figure 3E shows an enlarged view of region 3E of the camera module 30 according to the third embodiment of Figure 3C. As can be seen from Figures 3C and 3E, the plastic lens barrel 320 includes a first inner surface 321 and a first outer surface 323. The first inner surface 321 surrounds the optical axis X. The seventh lens 317 of the plastic lens is in solid contact with a first region 322 of the first inner surface 321. The first outer surface 323 is disposed opposite to the first inner surface 321 and is farther away from the aforementioned plastic lens than the first inner surface 321.

[0117] The frame element 330 includes a second inner surface 334 that surrounds the optical axis X and faces the first outer surface 323. The second inner surface 334 substantially contacts a second region 335 of the first outer surface 323. A gap 340 is formed between the first outer surface 323 and the second inner surface 334, extending from the second region 335 along the direction of the optical axis X, and the gap 340 corresponds to the first region 322. Furthermore, in the direction perpendicular to the optical axis X, the second region 335 and the first region 322 may not overlap.

[0118] The imaging lens 300 may further include a first annular element 351, which forms an annular structure. The first annular structure is disposed on the first inner surface 321. The annular structure corresponds to the second region 335, and the annular structure surrounds the optical axis X and extends in a direction away from the frame element 330.

[0119] The annular structure can be in solid contact with the third region 353 of the first inner surface 321, wherein the first inner surface 321 and the annular structure can be integrally formed. Furthermore, the annular structure is disposed in the third region 353 of the first inner surface 321. Moreover, the number of annular structures can be multiple, and the annular structures can be disposed adjacent to at least one of the plastic lenses.

[0120] Furthermore, the imaging lens 300 may further include a second annular element 354, which is located between the fourth lens 314 and the fifth lens 315, for positioning the fourth lens 314 and the fifth lens 315. As shown in Figure 3E, the second inner surface 334 may have threads, allowing the second region 335 of the plastic lens barrel 320 to make solid contact with the frame element 330. Specifically, the frame element 330 may be made of thermally conductive plastic, wherein the thermally conductive plastic is doped with thermally conductive components, such as graphite, carbon fiber, metal powder, etc. The thermally conductive plastic may further have electromagnetic shielding functionality to reduce electromagnetic signal interference from the photosensitive element C32. The plastic lens barrel 320 and the first annular element 351 may be made of plastic.

[0121] As shown in Figures 3D and 3E, in the cross-section parallel to the optical axis X, the seventh lens 317 is defined with a lens diameter of D7, the plastic lens barrel 320 has a thickness of T7 corresponding to the seventh lens 317 in the first region 322, and the gap 340 corresponds to the minimum width of the first region 322 at the seventh lens 317, which is W7. Furthermore, in the direction parallel to the optical axis X, the length of the overlap between the third region 353 and the second region 335 between the sixth lens 316 and the seventh lens 317 is O1, and the length of the plastic lens barrel 320 is PBL1. The parameters satisfy the conditions in Table 3 below. Table 3, Third Implementation Method D7 (mm) 9.6 T7 / D7 0.05 T7 (mm) 0.5 O1 / PBL1 0.093 W7 (mm) 0.05 O1 (mm) 2.22 PBL1 (mm) 23.8

[0122] It must be noted that T7 defined in the aforementioned third embodiment can be regarded as T as defined in this disclosure; D7 defined in the aforementioned third embodiment can be regarded as D as defined in this disclosure; W7 defined in the aforementioned third embodiment can be regarded as W as defined in this disclosure; O1 defined in the aforementioned third embodiment can be regarded as O as defined in this disclosure; PBL1 defined in the aforementioned third embodiment can be regarded as PBL as defined in this disclosure.

[0123] <Fourth Embodiment>

[0124] Please refer to Figure 4A, which shows a schematic diagram of the camera module 40 according to the fourth embodiment of this disclosure. As can be seen from Figure 4A, the camera module 40 includes an imaging lens 400 and an element carrier C40.

[0125] Please refer to Figures 4B, 4C, and 4D. Figure 4B shows an exploded view of the camera module 40 according to the fourth embodiment of Figure 4A, Figure 4C shows a cross-sectional view of the camera module 40 according to the fourth embodiment of Figure 4A, and Figure 4D shows a cross-sectional view of the imaging lens 400 according to the fourth embodiment of this disclosure. As shown in Figures 4B to 4D, the imaging lens 400 includes a plurality of lenses, a plastic lens barrel 420, a frame element 430, and a first annular structure (not shown), wherein a first annular element 451 forms the first annular structure. The plurality of lenses are a first lens 411, a second lens 412, a third lens 413, a fourth lens 414, a fifth lens 415, a sixth lens 416, and a seventh lens 417 arranged sequentially along an optical axis X. The frame element 430 is fixed to the plastic lens barrel 420. Furthermore, the imaging lens 400 may further include at least one second annular structure (not shown), wherein, in the fourth embodiment, the number of second annular structures is four, and each is formed by four second annular elements 452. In addition, the rigidity of the frame element 430 may be greater than that of the plastic lens barrel 420, and the rigidity of the first annular element 451 may be greater than that of the plastic lens barrel 420.

[0126] In detail, the component carrier C40 may include an electronic component carrier C41, a photosensitive element C42 and a base C43, and the frame element 430 of the imaging lens 400 is fixed to the component carrier C40.

[0127] In addition, the imaging lens 400 may further include two protruding structures 460.

[0128] Specifically, the first lens 411, the second lens 412, the fourth lens 414, the fifth lens 415, and the seventh lens 417 are all glass lenses, and the third lens 413 and the sixth lens 416 are all plastic lenses. The plastic lenses are arranged in correspondence with the glass lenses, that is, the second lens 412 and the fourth lens 414 are respectively arranged in correspondence with the third lens 413, the fifth lens 415 and the seventh lens 417 are respectively arranged in correspondence with the sixth lens 416, and the plastic lenses (i.e., the third lens 413 and the sixth lens 416) are disposed in the plastic lens barrel 420.

[0129] Furthermore, the imaging lens 400 may further include a lens holding element H, which is disposed in the plastic lens barrel 420 and can be in physical contact with at least one of the lens and the plastic lens barrel 420. Specifically, the lens holding element H is used to position the first lens 411.

[0130] Furthermore, the camera module 40 may further include a filter 480, which is disposed on the image side of the imaging lens 400.

[0131] Please refer to Figures 4C, 4E, and 4F, where Figure 4E shows an enlarged view of region 4E of the camera module 40 according to the fourth embodiment of Figure 4C, and Figure 4F shows an enlarged view of region 4F of the camera module 40 according to the fourth embodiment of Figure 4C. As shown in Figures 4C, 4E, and 4F, the plastic lens barrel 420 includes a first inner surface 421 and a first outer surface 423. The first inner surface 421 of the plastic lens barrel 420 surrounds the optical axis X. Furthermore, the third lens 413 and the sixth lens 416 of the plastic lens respectively physically contact the first region 422 of their corresponding first inner surface 421. The first outer surface 423 is disposed opposite to the first inner surface 421 and is farther away from the aforementioned plastic lens than the first inner surface 421.

[0132] The frame element 430 includes a second inner surface 434 that surrounds the optical axis X and faces the first outer surface 423. The second inner surface 434 substantially contacts a second region 435 of the first outer surface 423. Specifically, the frame element 430 substantially contacts the second region 435 of the plastic lens barrel 420, wherein the plastic lens barrel 420 and the frame element 430 are dimensionally matched to achieve the purpose of substantial contact.

[0133] The imaging lens 400 includes gaps 440 formed between a first outer surface 423 and a second inner surface 434. Each gap 440 extends from the second region 435 along the optical axis X, and each gap 440 corresponds to its corresponding first region 422. Furthermore, in the direction perpendicular to the optical axis X, the second region 435 and the first region 422 may not overlap.

[0134] The imaging lens 400 may further include a first annular element 451, which forms a first annular structure. The first annular structure is disposed on the first inner surface 421. The first annular structure corresponds to the second region 435, and the first annular structure surrounds the optical axis X and extends in a direction away from the frame element 430.

[0135] Furthermore, the first annular structure can substantially contact a third region 453 of the first inner surface 421, wherein the first inner surface 421 and the first annular structure can be integrally formed. In addition, the first annular structure is disposed in the third region 453 of the first inner surface 421.

[0136] A second annular structure formed by the second annular element 452 is respectively disposed on the first inner surface 421, and the second annular structure corresponds to a gap 440. The second annular structure surrounds the optical axis X and extends in a direction away from the gap 440. In a cross section parallel to the optical axis X, the width of the second annular structure corresponding to the gap 440 may be narrower than the width of the gap 440 corresponding to the adjacent first region 422.

[0137] Furthermore, as shown in Figure 4F, the surface of the plastic lens barrel 420 facing the optical axis X (i.e., the first inner surface 421) may have another first annular structure 4201. The first annular structure 4201 surrounds the optical axis X and extends in a direction away from the frame element 430, and is used to position the seventh lens 417. In addition, the first annular structure 4201 is disposed in the third region 455 of the first inner surface 421. The first annular structure 4201 is in solid contact with the third region 455 of the first inner surface 421 (as shown in Figure 4F, the third region 455 and the first annular structure 4201 are integrally formed).

[0138] As shown in Figure 4F, the imaging lens 400 may further include a colloid G, which is disposed between the second inner surface 434 and the first outer surface 423 to position the frame element 430 and the plastic lens barrel 420.

[0139] As shown in Figure 4F, the protruding structure 460 is disposed on the first outer surface 423 of the plastic lens barrel 420 and corresponds to the second annular structure. The protruding structure 460 protrudes away from the second annular structure and can maintain a gap 440 with the frame element 430.

[0140] Specifically, the frame element 430 and the first annular element 451 may be made of ceramic, the plurality of second annular elements 452 may be made of plastic, and the plastic lens barrel 420 may be made of plastic.

[0141] As shown in Figures 4D to 4F, on the cross-section parallel to the optical axis X, the third lens 413 defines a lens diameter of D3, the sixth lens 416 defines a lens diameter of D6, the plastic lens barrel 420 corresponds to a lens barrel thickness of T3 in the first region 422 of the third lens 413, the plastic lens barrel 420 corresponds to a lens barrel thickness of T6 in the first region 422 of the sixth lens 416, and the gap 440 corresponds to a minimum width of W3 in the first region 422 of the third lens 413. The minimum width of the first region 422 at the sixth lens 416 is W6; the minimum width of the gap 440 corresponding to the second annular structure and located on the image side of the second lens 412 is WN1; the minimum width of the gap 440 corresponding to the second annular structure and located on the image side of the third lens 413 is WN2; the minimum width of the gap 440 corresponding to the second annular structure and located on the image side of the fifth lens 415 is WN3; and the minimum width of the gap 440 corresponding to the second annular structure and located on the image side of the sixth lens 416 is WN4. Furthermore, in the direction parallel to the optical axis X, the length of overlap between the third region 453 and the second region 435 between the first lens 411 and the second lens 412 is O1; the length of overlap between the third region 455 and the second region 438 is O2; and the length of the plastic lens barrel 420 is PBL1. These parameters satisfy the conditions in Table 4 below. Table 4, Fourth Implementation Method D3 (mm) 13.0 T3 / D3 0.038 D6 (mm) 13.4 T6 / D6 0.037 T3 (mm) 0.5 O1 / PBL1 0.054 T6 (mm) 0.5 O2 / PBL1 0.026 W3 (mm) 0.25 WN1 (mm) 0.01 W6 (mm) 0.25 WN2 (mm) 0.01 O1 (mm) 1.44 WN3 (mm) 0.01 O2 (mm) 0.71 WN4 (mm) 0.01 PBL1 (mm) 26.85

[0142] It must be noted that T3 and T6 defined in the aforementioned fourth embodiment can be regarded as T as defined in this disclosure; D3 and D6 defined in the aforementioned fourth embodiment can be regarded as D as defined in this disclosure; W3 and W6 defined in the aforementioned fourth embodiment can be regarded as W as defined in this disclosure; O1 and O2 defined in the aforementioned fourth embodiment can be regarded as O as defined in this disclosure; PBL1 defined in the aforementioned fourth embodiment can be regarded as PBL as defined in this disclosure; WN1, WN2, WN3, and WN4 defined in the aforementioned fourth embodiment can be regarded as WN as defined in this disclosure.

[0143] <Fifth Embodiment>

[0144] Please refer to Figures 5A and 5B. Figure 5A shows a schematic diagram of an electronic device 50 according to the fifth embodiment of this disclosure, and Figure 5B shows another schematic diagram of an electronic device 50 according to the fifth embodiment of Figure 5A. As shown in Figures 5A and 5B, the electronic device 50 is a smartphone. The electronic device 50 includes a camera module and an image capture control interface 510. The camera module includes an imaging lens (not shown) and an element carrier (not shown). The frame element (not shown) of the imaging lens is fixed to the element carrier, and the imaging lens includes a plurality of lenses (not shown), a plastic lens barrel (not shown), a frame element (not shown), and a gap (not shown). Furthermore, the camera module may include the imaging lenses of the first to fourth embodiments described above, but this disclosure is not limited thereto.

[0145] In detail, the image capture control interface 510 may be a touch screen, which is used to display the image and has touch functionality, and can be used to manually adjust the shooting angle. In detail, the image capture control interface 510 includes an image playback button 514, an image capture module switching button 515, an integrated menu button 516, and a zoom control button 518. Furthermore, the user enters the shooting mode through the image capture control interface 510 of the electronic device 50. The image capture module switching button 515 allows the user to freely switch between using one of the following for shooting: the front camera module 511, the TOF module (Time-Of-Flight) 513, the wide-angle camera module 517, the telephoto camera module 526, the ultra-wide-angle camera module 524, and the macro camera module 525. The zoom control button 518 is used to adjust the zoom. The focus and capture button 520 is used to capture an image after framing the shot and confirming that one of the following cameras is selected: the front camera module 511, the TOF module 513, the wide-angle camera module 517, the telephoto camera module 526, the ultra-wide-angle camera module 524, and the macro camera module 525. The image playback button 514 allows the user to view the photo after capturing it. The integrated menu button 516 is used to adjust details during image capture (such as timed shooting, image ratio, etc.). Specifically, each camera module may include an imaging lens provided by any of the first to fourth embodiments described above, but this disclosure is not limited thereto.

[0146] The electronic device 50 may further include an indicator light 512, which is located on the front of the electronic device 50 and can be used to indicate unread messages, missed calls and mobile phone status to the user.

[0147] Furthermore, after the user enters the shooting mode through the image capture control interface 510 of the electronic device 50, the camera module gathers the imaging light onto the photosensitive element and outputs the relevant electronic signal of the image to the image signal processor (not shown) of the single-chip system (not shown). The single-chip system (not shown) may further include random access memory (RAM) (not shown), central processing unit (not shown) and storage unit (not shown), and may further include, but is not limited to, display unit, control unit, read-only storage unit (ROM) or a combination thereof.

[0148] Furthermore, the electronic device 50 may further include an image software processor and an image signal processor, and may further integrate the image software processor, image signal processor, positioner, transmission signal processor, gyroscope, storage unit and random access memory into a single-chip system.

[0149] Depending on the camera specifications of the electronic device 50, the electronic device 50 may further include an optical image stabilization component (not shown). More specifically, the electronic device 50 may further include at least one auxiliary focusing element 521 and at least one sensing element (not shown). The auxiliary focusing element 521 may be a color temperature compensation light-emitting element 519, an infrared rangefinder, a laser focusing 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 camera module of the electronic device 50, so as to obtain good image quality and help the electronic device 50 according to the present disclosure to have multiple shooting modes, such as optimized self-timer, 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 image capture control interface 510 and manually operate the framing range on the image capture control interface 510 to achieve the WYSIWYG autofocus function.

[0150] Furthermore, the camera module, optical image stabilization component, sensing element, auxiliary focusing element 521, and electronic component 527 can be mounted on an electronic component board 522 and electrically connected to the image signal processor and other related components via connector 523 to execute the shooting process. The electronic component board 522 can be a flexible printed circuit board (FPC). Current electronic devices, such as smartphones, tend to be thinner and lighter. Mounting the camera module and related components on a circuit board and then using connectors to integrate the circuitry onto the mainboard of the electronic device satisfies the structural design and circuit layout requirements of the limited internal space of the electronic device, providing greater flexibility. It also allows for more flexible control of the camera module's autofocus function via the electronic device's touchscreen. In other embodiments (not shown), the sensing element and auxiliary optical element can also be mounted on the mainboard of the electronic device or other types of carrier boards, depending on the structural design and circuit layout requirements.

[0151] <Sixth Embodiment>

[0152] Please refer to Figure 6, which illustrates an application of the electronic device according to the sixth embodiment of this disclosure to a drone 60. As shown in Figure 6, the electronic device (not shown) includes a camera module, wherein the camera module includes an imaging lens (not shown) and an element carrier (not shown), wherein the frame element (not shown) of the imaging lens is fixed to the element carrier. Furthermore, the camera module may include the imaging lens of the first to fourth embodiments described above, but this disclosure is not limited thereto.

[0153] In the sixth embodiment, the camera modules are a front camera module 610 and a side camera module 620.

[0154] Specifically, the front camera module 610 is located at the front end of the drone 60, and the side camera module 620 is located on the side of the drone 60. In this way, the electronic device can cope with complex ambient lighting conditions.

[0155] <Seventh Embodiment>

[0156] Please refer to Figure 7, which illustrates a schematic diagram of an electronic device according to the seventh embodiment of this disclosure installed in a vehicle 70. As shown in Figure 7, the electronic device (not shown) includes a camera module, wherein the camera module includes an imaging lens (not shown) and a component carrier (not shown), wherein the frame element (not shown) of the imaging lens is fixed to the component carrier. Furthermore, the camera module may include the imaging lens of the first to fourth embodiments described above, but this disclosure is not limited thereto.

[0157] In the seventh embodiment, the camera modules are a front camera module 710, a side camera module 720 and a rear camera module 730.

[0158] A front camera module 710, a side camera module 720, and a rear camera module 730 are respectively installed at the front, side, and rear of the vehicle 70 to help the driver obtain information about the external space outside the vehicle 70. This provides more viewing angles to reduce blind spots, thereby helping to improve driving safety.

[0159] Although the present invention has been disclosed above with reference to embodiments and examples, 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. [Simplified Explanation of the Diagram]

[0035] Figure 1A shows a schematic diagram of the camera module according to the first embodiment of this disclosure; Figure 1B shows an exploded view of the camera module according to Figure 1A in the first embodiment; Figure 1C shows a cross-sectional view of the camera module according to Figure 1A in the first embodiment; Figure 1D shows a cross-sectional view of the imaging lens according to the first embodiment of this disclosure; Figure 1E shows an enlarged view of region 1E of the camera module according to Figure 1C in the first embodiment; Figure 1F shows an enlarged view of region 1F of the camera module according to Figure 1C in the first embodiment; Figure 1G shows an enlarged view of region 1G according to Figure 1F; Figure 2A shows a schematic diagram of the camera module according to the second embodiment of this disclosure; Figure 2B shows an exploded view of the camera module according to Figure 2A in the second embodiment; Figure 2C shows a cross-sectional view of the camera module according to Figure 2A in the second embodiment; Figure 2D shows a cross-sectional view of the imaging lens according to the second embodiment of this disclosure; Figure 2E shows an enlarged view of region 2E of the camera module according to Figure 2C in the second embodiment; Figure 2F shows an enlarged view of region 2F of the camera module in the second embodiment according to Figure 2C; Figure 3A shows a schematic diagram of the camera module in the third embodiment according to this disclosure; Figure 3B shows an exploded view of the camera module in the third embodiment according to Figure 3A; Figure 3C shows a cross-sectional view of the camera module in the third embodiment according to Figure 3A; Figure 3D shows a cross-sectional view of the imaging lens in the third embodiment according to this disclosure; Figure 3E shows an enlarged view of region 3E of the camera module in the third embodiment according to Figure 3C; Figure 4A shows a schematic diagram of the camera module in the fourth embodiment according to this disclosure; Figure 4B shows an exploded view of the camera module in the fourth embodiment according to Figure 4A; Figure 4C shows a cross-sectional view of the camera module in the fourth embodiment according to Figure 4A; Figure 4D shows a cross-sectional view of the imaging lens in the fourth embodiment according to this disclosure; Figure 4E shows an enlarged view of region 4E of the camera module in the fourth embodiment according to Figure 4C; Figure 4F shows an enlarged view of region 4F of the camera module in the fourth embodiment according to Figure 4C; Figure 5A illustrates a schematic diagram of an electronic device according to the fifth embodiment of this disclosure; Figure 5B illustrates another schematic diagram of an electronic device according to the fifth embodiment of Figure 5A; Figure 6 illustrates a schematic diagram of an electronic device according to the sixth embodiment of this disclosure applied to a drone; and Figure 7 illustrates a schematic diagram of an electronic device according to the seventh embodiment of this disclosure installed in a car.

Claims

1. An imaging lens, comprising: a plurality of lenses arranged sequentially along an optical axis, including: a glass lens; and a first plastic lens corresponding to the glass lens; a plastic lens barrel, wherein the first plastic lens is disposed in the plastic lens barrel, the plastic lens barrel including: a first inner surface surrounding the optical axis, the first plastic lens substantially contacting a first region of the first inner surface; and a first outer surface opposite to the first inner surface and located further away from the first plastic lens than the first inner surface; a frame element fixed to the plastic lens barrel, the frame element including: a second inner surface surrounding the optical axis and facing the first outer surface, the second inner surface substantially contacting a second region of the first outer surface; and a gap formed between the first outer surface and the second inner surface, extending from the second region along the direction of the optical axis, and the gap corresponding to the first region; wherein... The imaging lens further includes at least one first annular structure disposed on the first inner surface, the at least one first annular structure corresponding to the second region, and the at least one first annular structure surrounding the optical axis and extending in a direction away from the frame element.

2. The imaging lens as claimed in claim 1 further comprises: a first annular element forming the at least one first annular structure, the first annular element physically contacting a third region of the first inner surface.

3. The imaging lens as claimed in claim 2, wherein the hardness of the first annular element is greater than that of the plastic lens barrel.

4. The imaging lens as claimed in claim 1, wherein the first inner surface is integrally formed with the at least one first annular structure.

5. The imaging lens as claimed in claim 1, wherein the frame element includes an extension structure extending toward the optical axis, wherein one of the lenses rests against the extension structure.

6. The imaging lens as claimed in claim 1, wherein the rigidity of the frame element is greater than that of the plastic lens barrel.

7. The imaging lens as claimed in claim 1, wherein the second region does not overlap with the first region in a direction perpendicular to the optical axis.

8. The imaging lens as claimed in claim 1, wherein in a cross section parallel to the optical axis, the first plastic lens defines a lens diameter of D, and the plastic barrel in the first region has a barrel thickness of T, which satisfies the following condition: 0.018 ≤ T / D ≤ 0.

6.

9. The imaging lens as claimed in claim 8, wherein in the cross section of the parallel optical axis, the first plastic lens defines the lens diameter as D, and the plastic lens barrel thickness in the first region is T, which satisfies the following condition: 0.02 ≤ T / D ≤ 0.

22.

10. The imaging lens as claimed in claim 8, wherein in the cross section of the parallel optical axis, the thickness of the plastic lens barrel in the first region is T, which satisfies the following condition: 0.22 mm ≤ T ≤ 3.0 mm.

11. The imaging lens as claimed in claim 1, wherein in a cross section parallel to the optical axis, the gap corresponds to a minimum width W of the first region, which satisfies the following condition: 0.0012 mm ≤ W ≤ 0.24 mm.

12. The imaging lens as claimed in claim 1, wherein the at least one first annular structure is disposed in a third region on the first inner surface, the third region overlaps with the second region by a length of O in a direction parallel to the optical axis, and the length of the plastic lens barrel is PBL, which satisfies the following condition: 0.012 ≤ O / PBL ≤ 0.

42.

13. The imaging lens as claimed in claim 1, wherein the number of the at least one first annular structure is plurality of.

14. The imaging lens as claimed in claim 1 further comprises: a fixing element for fixing the plastic lens barrel and the frame element, the fixing element being disposed on the frame element and in solid contact with at least one of the lenses and the plastic lens barrel.

15. The imaging lens of claim 1, wherein the lenses further comprise: a second plastic lens, the at least one first annular structure being disposed between the second plastic lens and the first plastic lens; wherein, The second plastic lens body contacts the first inner surface, and the second plastic lens corresponds to the gap.

16. The imaging lens as claimed in claim 1, wherein the at least one first annular structure is disposed adjacent to the first plastic lens.

17. The imaging lens as claimed in claim 1, further comprising: a second annular structure disposed on the first inner surface and corresponding to the gap, the second annular structure surrounding the optical axis and extending in a direction away from the gap; wherein, On a cross-section parallel to the optical axis, the gap corresponds to the width of the second annular structure which is narrower than the width of the first region. The minimum width of the second annular structure corresponding to the gap is WN, which satisfies the following condition: 0.004 mm ≤ WN ≤ 0.05 mm.

18. The imaging lens as claimed in claim 17, wherein the gap corresponds to the minimum width WN of the second annular structure, which satisfies the following condition: 0.005 mm ≤ WN ≤ 0.04 mm.

19. The imaging lens of claim 17 further comprises: a protruding structure disposed on the first outer surface of the plastic lens barrel and corresponding to the second annular structure, the protruding structure protruding away from the second annular structure and maintaining the gap with the frame element.

20. The imaging lens of claim 19, wherein the protruding structure comprises a plurality of sub-protruding structures arranged at intervals between each other.

21. A camera module comprising: an imaging lens as described in claim 1; and an element carrier, wherein the frame element of the imaging lens is fixed to the element carrier.

22. An electronic device comprising: a camera module as described in claim 21.

23. An imaging lens, comprising: a plurality of lenses arranged sequentially along an optical axis, including: a glass lens; and a first plastic lens corresponding to the glass lens; a plastic lens barrel, the first plastic lens disposed in the plastic lens barrel, the plastic lens barrel including: a first inner surface surrounding the optical axis, the first plastic lens substantially contacting a first region of the first inner surface; and a first outer surface opposite to the first inner surface and located further away from the first plastic lens than the first inner surface; a frame element fixed to the plastic lens barrel, the frame element including: a second inner surface surrounding the optical axis and facing the first outer surface, the second inner surface substantially contacting a second region of the first outer surface; and a gap formed between the first outer surface and the second inner surface, extending from the second region along the optical axis, and the gap corresponding to the first region; wherein... The imaging lens further includes at least one annular structure disposed on the first inner surface, the at least one annular structure corresponding to the gap, the at least one annular structure surrounding the optical axis and extending away from the gap; wherein, in a cross-section parallel to the optical axis, the width of the gap corresponding to the at least one annular structure is narrower than the width of the gap corresponding to the first region, the minimum width of the gap corresponding to the at least one annular structure is WN, which satisfies the following condition: 0.004 mm ≤ WN ≤ 0.05 mm.

24. The imaging lens as claimed in claim 23 further comprises: a protruding structure disposed on the first outer surface of the plastic lens barrel and corresponding to the at least one annular structure, the protruding structure protruding in a direction away from the at least one annular structure and maintaining the gap with the frame element.

25. The imaging lens of claim 24, wherein the protruding structure comprises a plurality of sub-protruding structures arranged at intervals between each other.

26. The imaging lens as claimed in claim 23, wherein in the cross section of the parallel optical axis, the gap corresponds to a minimum width W of the first region, which satisfies the following condition: 0.0012 mm ≤ W ≤ 0.24 mm.

27. The imaging lens as claimed in claim 23, wherein the second region does not overlap with the first region in the cross section of the parallel optical axis.

28. The imaging lens as claimed in claim 23, wherein in the cross section of the parallel optical axis, the first plastic lens defines a lens diameter of D, and the plastic lens barrel in the first region has a barrel thickness of T, which satisfies the following condition: 0.018 ≤ T / D ≤ 0.

6.

29. The imaging lens as claimed in claim 23, wherein the number of the at least one annular structure is plurality of.

30. The imaging lens of claim 23, wherein the lenses further comprise: a second plastic lens, the at least one annular structure being disposed between the first plastic lens and the second plastic lens; wherein, The second plastic lens body contacts the first inner surface, and the second plastic lens corresponds to the gap.

31. The imaging lens as claimed in claim 23, wherein the at least one annular structure is disposed adjacent to the first plastic lens.

Images