Plastic light folding element, imaging lens module and electronic device

Abstract

A plastic light turning element, an imaging lens module and an electronic device are disclosed. The plastic light turning element includes an entrance surface, an exit surface, at least one reflecting surface, at least one connecting surface and at least one injection mark structure. The entrance surface is configured to allow an imaging light to enter the plastic light turning element. The exit surface is configured to allow the imaging light to exit the plastic light turning element. The reflecting surface is configured to turn the imaging light. The connecting surface connects the entrance surface, the exit surface and the reflecting surface. The injection mark structure is disposed on the connecting surface. At least one of the entrance surface, the exit surface and the reflecting surface includes an optical portion and a circular-arc step difference structure. The circular-arc step difference structure is disposed on an outer periphery of the optical portion. The circular-arc step difference structure forms a circular arc with a center of the optical portion. Thus, the defect can be reduced and the size tolerance of the optical surface can be reduced.

Description

[0001] This application is a divisional application of the patent application filed on September 16, 2021, with application number 202111084950.3 and invention title "Plastic light-converting element, imaging lens module and electronic device". Technical Field

[0002] This disclosure relates to a plastic light-shifting element and an imaging lens module, and more particularly to a plastic light-shifting element and an imaging lens module used in portable electronic devices. Background Technology

[0003] In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablet computers, which have become ubiquitous in modern life. The imaging lens modules and plastic photoconverter elements mounted on these devices have also flourished. However, as technology advances, users have increasingly higher demands for the quality of plastic photoconverter elements. Therefore, developing a plastic photoconverter element that can stably control plastic filling during the injection molding process has become an important and urgent problem for the industry. Summary of the Invention

[0004] This disclosure provides a plastic light-transmitting element, an imaging lens module, and an electronic device. The injection mark structure helps to stably control the plastic filling speed during the injection process, thereby reducing the occurrence of defects.

[0005] According to one embodiment of this disclosure, a plastic light-reflecting element is provided, comprising an incident surface, an emitting surface, at least one reflective surface, at least one connecting surface, and at least one injection mark structure. The incident surface allows an imaging ray to enter the plastic light-reflecting element. The emitting surface allows the imaging ray to exit the plastic light-reflecting element. The reflective surface deflects the imaging ray. The connecting surface connects the incident surface, the emitting surface, and the reflective surface. The injection mark structure is disposed on the connecting surface. At least one of the incident surface, the emitting surface, and the reflective surface includes an optical portion and an arc-shaped step structure. The arc-shaped step structure is disposed on the outer periphery of the optical portion, and the arc-shaped step structure forms an arc with the center of the optical portion. There is a step height between the arc-shaped step structure and the optical portion. The step height between the arc-shaped step structure and the optical portion is h, which satisfies the following condition: 0.003 mm. <h<0.32mm。

[0006] According to the plastic light-converting element of the embodiment described above, at least two of the light-incident surface, light-exit surface and reflective surface may respectively include an optical part and an arc step structure, each arc step structure is disposed on the outer periphery of each optical part, and each arc step structure forms an arc with the center of each optical part.

[0007] According to the plastic light-converting element of the embodiment described above, the light-incident surface, the light-exit surface, and the reflective surface may respectively include an optical part and an arc step structure. Each arc step structure is disposed on the outer periphery of each optical part, and each arc step structure forms an arc with the center of each optical part.

[0008] According to the plastic light-converting element of the embodiment described above, the number of connecting surfaces can be two, and each connecting surface is connected to the light-incoming surface, the light-outcoming surface, and the reflective surface, and the connecting surfaces are arranged opposite to each other.

[0009] According to the plastic light-transforming element of the embodiment described above, the number of injection mark structures can be two, and the injection mark structures are respectively disposed on the connecting surface.

[0010] According to the embodiments described above, the plastic light-transmitting element has connecting surfaces that can be parallel to each other.

[0011] According to the plastic light-converting element of the embodiment described above, the connecting surface can be orthogonal to the light-incident surface, the light-exiting surface and the reflecting surface, respectively.

[0012] According to the embodiments described above, the optical part of the plastic light-converting element may include a smooth plane.

[0013] According to the plastic light-converting element of the embodiment described above, the optical part may include an optical aspherical surface located at the center of the optical part.

[0014] According to the plastic light-transforming element of the embodiment described above, the area occupied by the injection mark structure on the connecting surface is Ag, and the total area of ​​the connecting surface is At, which can satisfy the following condition: 35% ≤ Ag / At ≤ 80%.

[0015] According to the embodiment described above, the plastic light-converting element has an Abbe number of V, which satisfies the following condition: 40≤V≤72.

[0016] According to the plastic light-reflecting element of the embodiment described above, the number of reflective surfaces can be two, and both reflective surfaces are used to deflect imaging light rays.

[0017] According to the embodiments described above, the plastic light-converting element has reflective surfaces that can be orthogonal to each other.

[0018] According to the plastic light-converting element of the embodiment described above, the light-incident surface, the light-exit surface, and the two reflection surfaces may each include an optical part and an arc step structure. Each arc step structure is disposed on the outer periphery of each optical part, and each arc step structure forms an arc with the center of each optical part.

[0019] According to the plastic light-transforming element of the embodiment described above, the injection mark structure may include an arc-shaped edge that extends outward from the center of the injection mark structure.

[0020] According to the plastic light-converting element of the embodiment described above, the step height between the arc step structure and the optical part is h, which can satisfy the following conditions: 0.005mm≤h≤0.17mm.

[0021] According to one embodiment of the present disclosure, an imaging lens module is provided, including a plastic light-reflecting element and an imaging lens group as described in the above embodiments, wherein the plastic light-reflecting element is disposed on one of the object side and the image side of the imaging lens group.

[0022] According to one embodiment of the present disclosure, an electronic device is provided, comprising an imaging lens module and an electronic photosensitive element as described in the foregoing embodiments, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens module. Attached Figure Description

[0023] Figure 1A A schematic diagram of an electronic device according to a first embodiment of this disclosure is shown;

[0024] Figure 1B Drawing according to Figure 1A A perspective view of the plastic light-converting element in the first embodiment;

[0025] Figure 1C Drawing according to Figure 1A Another perspective view of the plastic light-transmitting element in the first embodiment;

[0026] Figure 1D Drawing according to Figure 1A A schematic diagram of the light-incident surface of the plastic light-transforming element in the first embodiment;

[0027] Figure 1E Drawing according to Figure 1A A schematic diagram of the reflective surface of the plastic light-converting element in the first embodiment;

[0028] Figure 1F Drawing according to Figure 1A A schematic diagram of the light-emitting surface of the plastic light-transmitting element in the first embodiment;

[0029] Figure 1G Drawing according to Figure 1A A schematic diagram of the parameters of the plastic light-converting element in the first embodiment;

[0030] Figure 2A A schematic diagram of an electronic device according to a second embodiment of this disclosure is shown;

[0031] Figure 2B Drawing according to Figure 2AA perspective view of the plastic light-transmitting element in the second embodiment;

[0032] Figure 2C Drawing according to Figure 2A Another perspective view of the plastic light-transmitting element in the second embodiment;

[0033] Figure 2D Drawing according to Figure 2A A schematic diagram of the light-incident surface and the reflective surface of the plastic light-transforming element in the second embodiment;

[0034] Figure 2E Drawing according to Figure 2A A schematic diagram of the parameters of the plastic light-converting element in the second embodiment;

[0035] Figure 3A A schematic diagram of an electronic device according to a third embodiment of this disclosure is shown;

[0036] Figure 3B Drawing according to Figure 3A A perspective view of the plastic light-transmitting element in the third embodiment;

[0037] Figure 3C Drawing according to Figure 3A Another perspective view of the plastic light-transmitting element in the third embodiment;

[0038] Figure 3D Drawing according to Figure 3A A schematic diagram of the light-incident and light-exit surfaces of the plastic light-converting element in the third embodiment;

[0039] Figure 3E Drawing according to Figure 3A A schematic diagram of the reflective surface of the plastic light-converting element in the third embodiment;

[0040] Figure 3F Drawing according to Figure 3A A schematic diagram of the parameters of the plastic light-converting element in the third embodiment;

[0041] Figure 4A A schematic diagram of an electronic device according to the fourth embodiment of this disclosure is shown;

[0042] Figure 4B Drawing according to Figure 4A A perspective view of the plastic light-transmitting element in the fourth embodiment;

[0043] Figure 4C Drawing according to Figure 4A Another perspective view of the plastic light-transmitting element in the fourth embodiment;

[0044] Figure 4D Drawing according to Figure 4A A schematic diagram of the light-incident surface and the reflective surface of the plastic light-transforming element in the fourth embodiment;

[0045] Figure 4E Drawing according to Figure 4A Another schematic diagram of the light-incident surface and the reflective surface of the plastic light-transforming element in the fourth embodiment;

[0046] Figure 4F Drawing according to Figure 4A A schematic diagram of the parameters of the plastic light-converting element in the fourth embodiment;

[0047] Figure 5 A schematic diagram illustrating the connection surface and injection mark structure according to the fifth embodiment of this disclosure;

[0048] Figure 6 A schematic diagram illustrating the connection surface and injection mark structure according to the sixth embodiment of this disclosure;

[0049] Figure 7 A schematic diagram illustrating the connection surface and injection mark structure according to the seventh embodiment of this disclosure;

[0050] Figure 8 A schematic diagram illustrating the connection surface and injection mark structure according to the eighth embodiment of this disclosure;

[0051] Figure 9A A schematic diagram of an electronic device according to the ninth embodiment of this disclosure is shown;

[0052] Figure 9B Drawing according to Figure 9A Another schematic diagram of the electronic device in the ninth embodiment;

[0053] Figure 9C Drawing according to Figure 9A A schematic diagram of the image in the ninth embodiment;

[0054] Figure 9D Drawing according to Figure 9A Another image illustration in the ninth embodiment;

[0055] Figure 9E Drawing according to Figure 9A Another image illustration in the ninth embodiment;

[0056] Figure 10A A schematic diagram of an electronic device according to the tenth embodiment of this disclosure; and

[0057] Figure 10B Drawing according to Figure 10A A partial perspective view of the electronic device in the tenth embodiment.

[0058] [Symbol Explanation]

[0059] 10, 20, 30, 40, 90, 1000: Electronic devices

[0060] 11,21,31,41: Electronic photosensitive element

[0061] 12,22,32,42: Imaging planes

[0062] 13, 23, 33, 43: Imaging lens group

[0063] 100, 200, 300, 400: Plastic light-transmitting elements

[0064] 110, 210, 310, 410: Incident surface

[0065] 111,121,131,211,221,231,311,321,331,411,421,431: Optical Department

[0066] 112,122,132,212,222,232,312,322,332,412,422,432: Circular arc step structure

[0067] 114, 314, 324: Optical aspherical surfaces

[0068] 120, 220, 320, 420: Light-emitting surface

[0069] 130, 230, 330, 430: Reflecting surfaces

[0070] 140a, 140b, 240, 340a, 340b, 440, 540, 640, 740, 840: Connecting surfaces

[0071] 150, 250, 350, 450, 550, 650, 750, 850: Injection mark structure

[0072] 151,351,451,551,651,751: Arc-shaped edge

[0073] 91: User Interface

[0074] 92, 1011, 1012: Ultra-wide-angle camera module

[0075] 93: High-resolution camera module

[0076] 94, 1015, 1016, 1017, 1018: Telephoto camera module

[0077] 95: Imaging signal processing element

[0078] 96,1020: Flash module

[0079] 1013, 1014: Wide-angle camera module

[0080] 1019: TOF Module

[0081] L: Imaging ray

[0082] Ag: The area occupied by the injection mark structure on the joint surface.

[0083] At: Total area of ​​the connecting surface

[0084] V: Abbe number of plastic optical conversion element

[0085] h: Step height between the arc-shaped step structure and the optical component Detailed Implementation

[0086] This disclosure provides a plastic light-transmitting element, comprising an incident surface, an emitting surface, at least one reflective surface, at least one connecting surface, and at least one injection mark structure. The incident surface allows an imaging ray to enter the plastic light-transmitting element. The emitting surface allows the imaging ray to exit the plastic light-transmitting element. The reflective surface deflects the imaging ray. The connecting surface connects the incident surface, the emitting surface, and the reflective surface. The injection mark structure is disposed on the connecting surface. At least one of the incident surface, the emitting surface, and the reflective surface includes an optical portion and an arc-shaped step structure. The arc-shaped step structure is disposed on the outer periphery of the optical portion, and the arc-shaped step structure forms an arc with the center of the optical portion. The area occupied by the injection mark structure on the connecting surface is Ag, and the total area of ​​the connecting surface is At, satisfying the following condition: 33% ≤ Ag / At ≤ 90%. The high area ratio of the injection mark structure allows for more stable control of the plastic filling speed during the injection process, thereby avoiding residual traces of plastic flow during injection and reducing defects. Furthermore, setting an arc-shaped step structure on the optical surface can further control the surface accuracy of the optical surface and reduce the dimensional tolerance of the optical surface.

[0087] Plastic light-transfer elements can be manufactured by injection molding and include transparent plastic materials. The reflective surface can reflect imaging light through a high-reflectivity film or through total internal reflection. Furthermore, the light-incident surface, light-exit surface, and reflective surface can all be optical surfaces.

[0088] The shape of the injection mark structure can be rectangular, trapezoidal, circular, crescent-shaped, triangular, polygonal, or a combination of these shapes, but is not limited thereto. Furthermore, the surface characteristics of the injection mark structure are different from the surface characteristics of the non-injection mark structure area in the connection surface.

[0089] The circular arc step structure can be a complete circle or contain multiple arcs. Specifically, the arcs are spaced apart from each other. Furthermore, the circular arc step structure can be convex or concave, where a convex step refers to the optical part being higher than its outer perimeter, and a concave step refers to the optical part being lower than its outer perimeter.

[0090] At least two of the light-incident surface, light-exit surface, and reflective surface may each include an optical element and an arc-shaped step structure. Each arc-shaped step structure is disposed on the outer periphery of each optical element, and each arc-shaped step structure forms an arc with the center of each optical element. By providing arc-shaped step structures on multiple optical surfaces, the coaxiality of each optical surface can be improved, so that the imaging light rays can maintain a high image resolution after passing through the plastic light-reflecting element.

[0091] The light-incident surface, light-exit surface, and reflecting surface can each include an optical element and an arc-shaped step structure. Each arc-shaped step structure is located on the outer periphery of the optical element, and each arc-shaped step structure forms an arc with the center of the optical element. By setting arc-shaped step structures on each optical surface, the optical properties of the physical component can be made closer to the simulated values ​​of the optical design.

[0092] The number of connecting surfaces can be two, each connecting to the light-incoming surface, the light-outcoming surface, and the reflective surface, and the connecting surfaces are arranged opposite each other. This simplifies the complexity of the mold and reduces the production cost of the product.

[0093] The number of injection mark structures can be two, and each injection mark structure is set on the connecting surface. This improves molding efficiency and maintains the structural integrity of the arc-shaped step structure.

[0094] The connecting surfaces can be parallel to each other. This makes the overall optical path less prone to skew or deflection, reducing the probability of non-imaging light rays being generated.

[0095] The connecting surfaces can be orthogonal to the light-incident surface, light-exit surface, and reflective surface, respectively. This facilitates the structural design of the mold release mechanism.

[0096] The optical section may include a smooth plane. This provides better flatness of the optical surface.

[0097] The optical section may include an optical aspherical surface, wherein the optical aspherical surface is located at the center of the optical section. Specifically, the plastic optical refractive element may have optical refractive power, which is beneficial for correcting aberrations to achieve high-resolution imaging quality.

[0098] The number of reflective surfaces can be two, both of which are used to deflect imaging light rays. In this way, multiple reflective surfaces can be provided according to optical and mechanical requirements to obtain a more suitable optical path configuration, thereby achieving miniaturization.

[0099] The reflective surfaces can be orthogonal to each other. This allows for a shorter optical path design that shortens the focusing drive distance.

[0100] The light-incident surface, light-exit surface, and second reflection surface can each include an optical component and an arc-shaped step structure. Each arc-shaped step structure is located on the outer periphery of the optical component, and each arc-shaped step structure forms an arc with the center of the optical component. By setting arc-shaped step structures on each optical surface, the optical properties of the physical component can be made closer to the simulated values ​​of the optical design.

[0101] The injection mark structure may include an arc edge, wherein the arc edge extends outward from the center of the injection mark structure. Accordingly, the injection mark structure can have a stable and fast injection rate, which provides the feasibility of mass production.

[0102] The area occupied by the injection mark structure on the connection surface is Ag, and the total area of the connection surface is At, which can satisfy the following condition: 35% ≤ Ag / At ≤ 80%. Accordingly, a relatively fast injection rate and high dimensional accuracy can be both achieved, so as to provide a high molding yield.

[0103] The Abbe number of the plastic light turning element is V, which can satisfy the following condition: 40 ≤ V ≤ 72. Accordingly, optical dispersion can be reduced, and optical aberration caused by optical dispersion can be decreased, so as to improve imaging quality.

[0104] The step height between the arc step difference structure and the optical portion is h, which can satisfy the following condition: 0.003 mm < h < 0.32 mm. Through the easily recognizable step height range, a planar reference can be provided for the optical surface, so as to ensure good flatness of the optical surface. In addition, it can satisfy the following condition: 0.005 mm ≤ h ≤ 0.17 mm.

[0105] All the technical features in the plastic light turning element of the present disclosure can be combined and configured to achieve the corresponding effects.

[0106] The present disclosure provides an imaging lens module, including the aforementioned plastic light turning element and an imaging lens group, wherein the plastic light turning element is disposed on one of the object side and the image side of the imaging lens group. Specifically, the plastic light turning element is suitable for being applied to a telephoto imaging lens module (the full field of view is less than 40 degrees). Accordingly, the volume of the imaging lens module can be effectively reduced.

[0107] The present disclosure provides an electronic device, including the aforementioned imaging lens module and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens module.

[0108] According to the above embodiments, specific examples are proposed below and described in detail with reference to the accompanying drawings.

[0109] <First Embodiment>

[0110] Please refer to Figure 1A , which is a schematic diagram illustrating an electronic device 10 according to the first embodiment of the present disclosure. From Figure 1AAs can be seen, the electronic device 10 includes an imaging lens module (not shown) and an electronic photosensitive element 11, wherein the electronic photosensitive element 11 is disposed on an imaging surface 12 of the imaging lens module. Further, the imaging lens module includes a plastic light-reflecting element 100 and an imaging lens group 13, wherein the plastic light-reflecting element 100 is disposed on either the object side or the image side of the imaging lens group 13. In the first embodiment, the plastic light-reflecting element 100 is disposed on the object side of the imaging lens group 13. Specifically, the plastic light-reflecting element 100 is suitable for use in telephoto imaging lens modules (full angle of view less than 40 degrees). This effectively reduces the size of the imaging lens module.

[0111] Please refer to Figure 1B and Figure 1C ,in Figure 1B Drawing according to Figure 1A A perspective view of the plastic light-transmitting element 100 in the first embodiment. Figure 1C Drawing according to Figure 1A Another perspective view of the plastic light-transmitting element 100 in the first embodiment. Figure 1B and Figure 1C It is understood that the plastic light-transforming element 100 includes a light-incident surface 110, a light-emitting surface 120, at least one reflective surface 130, connecting surfaces 140a and 140b, and at least one injection mark structure 150. The light-incident surface 110 allows an imaging ray L to enter the plastic light-transforming element 100, the light-emitting surface 120 allows the imaging ray L to exit the plastic light-transforming element 100, the reflective surface 130 deflects the imaging ray L, the connecting surfaces 140a and 140b are both connected to the light-incident surface 110, the light-emitting surface 120, and the reflective surface 130, and the injection mark structure 150 is disposed on the connecting surface 140a. In the first embodiment, the number of reflective surfaces is one, the number of connecting surfaces is two, and the number of injection mark structures is one, but this is not a limitation.

[0112] The plastic light-transforming element 100 can be manufactured by injection molding and includes a transparent plastic material. The reflective surface 130 can reflect the imaging light L through a high-reflectivity film or through total internal reflection. Furthermore, the light-incident surface 110, the light-exit surface 120, and the reflective surface 130 can all be optical surfaces. Specifically, this disclosure uses a high-area-ratio injection mark structure 150 to enable more stable control of the plastic filling speed during the injection process, thereby avoiding the retention of traces of plastic flow during injection and reducing defects.

[0113] Specifically, the connecting surfaces 140a and 140b are arranged opposite each other. This simplifies the complexity of the mold and reduces the production cost of the product. Furthermore, the connecting surfaces 140a and 140b are orthogonal to the light-incident surface 110, the light-exit surface 120, and the reflective surface 130, respectively. This facilitates the structural design for mold release.

[0114] Please refer to Figure 1D Its drawing is based on Figure 1A A schematic diagram of the light-incident surface 110 of the plastic light-transmitting element 100 in the first embodiment. (From...) Figure 1A , Figure 1B and Figure 1D It is understood that the light-incident surface 110 includes an optical section 111 and an arcuate step structure 112. The arcuate step structure 112 is disposed on the outer periphery of the optical section 111, and the arcuate step structure 112 forms an arc with the center of the optical section 111. The optical section 111 includes an optical aspherical surface 114, and the optical aspherical surface 114 is located at the center of the optical section 111. Specifically, the plastic light-reflecting element 100 can have optical refractive power, which is beneficial for repairing aberrations to achieve high-resolution imaging quality. In the first embodiment, the arcuate step structure 112 includes a plurality of arcs that are spaced apart from each other. The arcuate step structure 112 is concave, where concave means that the optical section 111 is lower than the outer periphery of the optical section 111.

[0115] Please refer to Figure 1E Its drawing is based on Figure 1A A schematic diagram of the reflective surface 130 of the plastic light-transmitting element 100 in the first embodiment. (From...) Figure 1A , Figure 1C and Figure 1E It is understood that the reflecting surface 130 includes an optical section 131 and an arc-shaped step structure 132. The arc-shaped step structure 132 is disposed on the outer periphery of the optical section 131, and the arc-shaped step structure 132 forms an arc with the center of the optical section 131. The optical section 131 includes a smooth plane. This provides the reflecting surface 130 with better flatness. In the first embodiment, the arc-shaped step structure 132 includes a plurality of arcs that are spaced apart from each other. The arc-shaped step structure 132 is concave, meaning that the optical section 131 is lower than its outer periphery.

[0116] Please refer to Figure 1F Its drawing is based on Figure 1A A schematic diagram of the light-emitting surface 120 of the plastic light-transmitting element 100 in the first embodiment. (From...) Figure 1A , Figure 1B and Figure 1F It is understood that the light-emitting surface 120 includes an optical section 121 and an arc-shaped step structure 122. The arc-shaped step structure 122 is disposed on the outer periphery of the optical section 121, and the arc-shaped step structure 122 forms an arc with the center of the optical section 121. The optical section 121 includes a smooth plane. This provides better flatness to the light-emitting surface 120. In the first embodiment, the arc-shaped step structure 122 is a complete circle, and the arc-shaped step structure 122 is a convex step, where a convex step means that the optical section 121 is higher than the outer periphery of the optical section 121.

[0117] Depend on Figures 1D to 1F It can be seen that setting arc step structures 112, 122, and 132 on the optical surface (i.e., the light-incident surface 110, the light-exit surface 120, and the reflecting surface 130) can further control the surface accuracy of the optical surface and reduce the dimensional tolerance of the optical surface.

[0118] Please refer to Figure 1G Its drawing is based on Figure 1A A schematic diagram of the parameters of the plastic light-transmitting element 100 in the first embodiment. (From...) Figure 1B and Figure 1G It can be seen that the shape of the injection mark structure 150 is polygonal, but it is not limited to this shape. Furthermore, the surface characteristics of the injection mark structure 150 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 140a.

[0119] Depend on Figure 1G It is understood that the injection mark structure 150 includes an arc-shaped edge 151, wherein the arc-shaped edge 151 extends outward from the center of the injection mark structure 150. This allows for a stable and rapid injection rate, providing feasibility for mass production. In the first embodiment, the number of arc-shaped edges 151 is three, but this is not a limitation.

[0120] Cooperate Figure 1A and Figure 1G It can be seen that the area occupied by the injection mark structure 150 on the connecting surface 140a is Ag, the total area of ​​the connecting surface 140a is At, the step height between the arc step structures 112, 122, 132 and the optical parts 111, 121, 131 is h, and the Abbe number of the plastic light conversion element 100 is V. The parameters satisfy the conditions in Table 1 below.

[0121]

[0122] <Second Embodiment>

[0123] Please refer to Figure 2A The diagram illustrates an electronic device 20 according to a second embodiment of this disclosure. Figure 2A As can be seen, the electronic device 20 includes an imaging lens module (not shown) and an electronic photosensitive element 21, wherein the electronic photosensitive element 21 is disposed on an imaging surface 22 of the imaging lens module. Further, the imaging lens module includes a plastic light-reflecting element 200 and an imaging lens group 23, wherein the plastic light-reflecting element 200 is disposed on either the object side or the image side of the imaging lens group 23. In the second embodiment, the plastic light-reflecting element 200 is disposed on the image side of the imaging lens group 23. Specifically, the plastic light-reflecting element 200 is suitable for use in telephoto imaging lens modules (full angle of view less than 40 degrees). This effectively reduces the size of the imaging lens module.

[0124] Please refer to Figure 2B and Figure 2C ,in Figure 2B Drawing according to Figure 2A A perspective view of the plastic light-transmitting element 200 in the second embodiment. Figure 2C Drawing according to Figure 2A Another perspective view of the plastic light-transmitting element 200 in the second embodiment. Figure 2B and Figure 2C It is understood that the plastic light-transforming element 200 includes a light-incident surface 210, a light-emitting surface 220, a reflective surface 230, a connecting surface 240, and an injection mark structure 250. The light-incident surface 210 allows an imaging ray L to enter the plastic light-transforming element 200, the light-emitting surface 220 allows the imaging ray L to exit the plastic light-transforming element 200, the reflective surface 230 deflects the imaging ray L, and the connecting surface 240 connects to the light-incident surface 210, the light-emitting surface 220, and the reflective surface 230. The injection mark structure 250 is disposed on the connecting surface 240. In the second embodiment, the number of reflective surfaces is four, the number of connecting surfaces is two, and the number of injection mark structures is two. Two of the reflective surfaces share a plane with the light-incident surface 210 and the light-emitting surface 220, but this is not a limitation.

[0125] The plastic light-transforming element 200 can be manufactured by injection molding and includes a transparent plastic material. The reflective surface 230 can reflect the imaging light L through a high-reflectivity film or through total internal reflection. Furthermore, the light-incident surface 210, the light-exit surface 220, and the reflective surface 230 can all be optical surfaces. Specifically, this disclosure utilizes a high-area-ratio injection mark structure 250 to enable more stable control of the plastic filling speed during the injection process, thereby avoiding residual traces of plastic flow during injection and reducing defects.

[0126] Specifically, the connecting surfaces 240 are arranged opposite each other and are parallel to each other. This simplifies the complexity of the mold, thereby reducing the production cost of the product, and makes the overall optical path less prone to skewing or deflection, thus reducing the probability of non-imaging light rays being generated. Furthermore, the connecting surfaces 240 are orthogonal to the light-incident surface 210, the light-exit surface 220, and the reflecting surface 230, respectively. This facilitates the structural design of the mold release mechanism.

[0127] Please refer to Figure 2D Its drawing is based on Figure 2A A schematic diagram of the light-incident surface 210 and the reflective surface 230 of the plastic light-transmitting element 200 in the second embodiment. (From...) Figure 2A , Figure 2B and Figure 2DIt is understood that the light-incident surface 210 includes an optical portion 211 and an arc-shaped step structure 212. The arc-shaped step structure 212 is disposed on the outer periphery of the optical portion 211, and the arc-shaped step structure 212 forms an arc with the center of the optical portion 211. The optical portion 211 includes a smooth plane. This provides better flatness to the light-incident surface 210. In the second embodiment, the arc-shaped step structure 212 includes a plurality of arcs that are spaced apart from each other. The arc-shaped step structure 212 is concave, and a concave step means that the optical portion 211 is lower than the outer periphery of the optical portion 211.

[0128] The reflecting surface 230 includes an optical section 231 and an arcuate step structure 232. The arcuate step structure 232 is disposed on the outer periphery of the optical section 231, and the arcuate step structure 232 forms an arc with the center of the optical section 231. The optical section 231 includes a smooth plane. This provides the reflecting surface 230 with better flatness. In a second embodiment, the arcuate step structure 232 includes multiple arcs that are spaced apart from each other. The arcuate step structure 232 is a convex step, meaning that the optical section 231 is higher than its outer periphery.

[0129] Furthermore, all reflective surfaces 230 are used to deflect the imaging ray L. In this way, multiple reflective surfaces can be provided according to optical and mechanical requirements to obtain a more suitable optical path configuration, thereby achieving miniaturization.

[0130] Depend on Figure 2A and Figure 2C It is understood that the light-emitting surface 220 includes an optical section 221 and an arc-shaped step structure 222. The arc-shaped step structure 222 is disposed on the outer periphery of the optical section 221, and the arc-shaped step structure 222 forms an arc with the center of the optical section 221. The optical section 221 includes a smooth plane. This provides better flatness to the light-emitting surface 220. In the second embodiment, the arc-shaped step structure 222 includes a plurality of arcs that are spaced apart from each other. The arc-shaped step structure 222 is concave, and a concave step means that the optical section 221 is lower than the outer periphery of the optical section 221.

[0131] Depend on Figure 2C and Figure 2D It can be seen that setting the arc step structure 212, 222, 232 on the optical surface (i.e., the light-incident surface 210, the light-exit surface 220 and the reflective surface 230) can further control the surface accuracy of the optical surface and reduce the dimensional tolerance of the optical surface.

[0132] Please refer to Figure 2E Its drawing is based on Figure 2A A schematic diagram of the parameters of the plastic light-transmitting element 200 in the second embodiment. (From...) Figure 2B , Figure 2C and Figure 2EIt can be seen that the shape of the injection mark structure 250 is trapezoidal, but it is not limited to this shape. Furthermore, the surface characteristics of the injection mark structure 250 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 240.

[0133] Cooperate Figure 2A and Figure 2E It can be seen that the area occupied by the injection mark structure 250 on the connecting surface 240 is Ag, the total area of ​​the connecting surface 240 is At, the step height between the arc step structures 212, 222, 232 and the optical parts 211, 221, 231 is h, and the Abbe number of the plastic light conversion element 200 is V. The parameters satisfy the conditions in Table 2 below.

[0134]

[0135] <Third Embodiment>

[0136] Please refer to Figure 3A The diagram illustrates an electronic device 30 according to a third embodiment of this disclosure. Figure 3A As can be seen, the electronic device 30 includes an imaging lens module (not shown) and an electronic photosensitive element 31, wherein the electronic photosensitive element 31 is disposed on an imaging surface 32 of the imaging lens module. Further, the imaging lens module includes a plastic light-reflecting element 300 and an imaging lens group 33, wherein the plastic light-reflecting element 300 is disposed on either the object side or the image side of the imaging lens group 33. In the third embodiment, the plastic light-reflecting element 300 is disposed on the image side of the imaging lens group 33. Specifically, the plastic light-reflecting element 300 is suitable for use in telephoto imaging lens modules (full angle of view less than 40 degrees). This effectively reduces the size of the imaging lens module.

[0137] Please refer to Figure 3B and Figure 3C ,in Figure 3B Drawing according to Figure 3A A perspective view of the plastic light-transmitting element 300 in the third embodiment. Figure 3C Drawing according to Figure 3A Another perspective view of the plastic light-transmitting element 300 in the third embodiment. Figure 3B and Figure 3CIt is understood that the plastic light-reflecting element 300 includes a light-incident surface 310, a light-emitting surface 320, a reflective surface 330, connecting surfaces 340a and 340b, and at least one injection mark structure 350. The light-incident surface 310 allows an imaging ray L to enter the plastic light-reflecting element 300, the light-emitting surface 320 allows the imaging ray L to exit the plastic light-reflecting element 300, the reflective surface 330 deflects the imaging ray L, and the connecting surfaces 340a and 340b are both connected to the light-incident surface 310, the light-emitting surface 320, and the reflective surface 330. The injection mark structure 350 is disposed on the connecting surface 340a. In the third embodiment, there are two reflective surfaces, two connecting surfaces, and one injection mark structure. The light-incident surface 310 and the light-emitting surface 320 share a plane, but this is not a limitation.

[0138] The plastic light-transforming element 300 can be manufactured by injection molding and includes a transparent plastic material. The reflective surface 330 can reflect the imaging light L through a high-reflectivity film or through total internal reflection. Furthermore, the light-incident surface 310, the light-exit surface 320, and the reflective surface 330 can all be optical surfaces. Specifically, this disclosure utilizes a high-area-ratio injection mark structure 350 to enable more stable control of the plastic filling speed during the injection process, thereby avoiding residual traces of plastic flow during injection and reducing defects.

[0139] Specifically, the connecting surfaces 340a and 340b are arranged opposite each other and are parallel to each other. This simplifies the complexity of the mold, thereby reducing the production cost of the product, and makes the overall optical path less prone to skewing or deflection, thus reducing the probability of non-imaging light rays being generated. Furthermore, the connecting surfaces 340a and 340b are orthogonal to the light-incident surface 310, the light-exit surface 320, and the reflecting surface 330, respectively. This facilitates the structural design of the mold release mechanism.

[0140] Please refer to Figure 3D Its drawing is based on Figure 3A A schematic diagram of the light-incident surface 310 and the light-exit surface 320 of the plastic light-transmitting element 300 in the third embodiment. Figure 3A , Figure 3B and Figure 3DIt is understood that the light-incident surface 310 includes an optical section 311 and an arc-shaped step structure 312. The arc-shaped step structure 312 is disposed on the outer periphery of the optical section 311, and the arc-shaped step structure 312 forms an arc with the center of the optical section 311. The optical section 311 includes an optical aspherical surface 314, and the optical aspherical surface 314 is located at the center of the optical section 311. Specifically, the plastic light-reflecting element 300 can have optical refractive power, which is beneficial for repairing aberrations to achieve high-resolution imaging quality. In the third embodiment, the arc-shaped step structure 312 includes multiple arcs that are spaced apart from each other. The arc-shaped step structure 312 is concave, and a concave step means that the optical section 311 is lower than the outer periphery of the optical section 311.

[0141] Please refer to Figure 3E Its drawing is based on Figure 3A A schematic diagram of the reflective surface 330 of the plastic light-transmitting element 300 in the third embodiment. (From...) Figure 3A and Figure 3E It is understood that the reflecting surface 330 includes an optical section 331 and an arc-shaped step structure 332. The arc-shaped step structure 332 is disposed on the outer periphery of the optical section 331, and the arc-shaped step structure 332 forms an arc with the center of the optical section 331. The optical section 331 includes a smooth plane. This provides the reflecting surface 330 with better flatness. In the third embodiment, the arc-shaped step structure 332 includes a plurality of arcs that are spaced apart from each other. The arc-shaped step structure 332 is a convex step, and a convex step means that the optical section 331 is higher than the outer periphery of the optical section 331.

[0142] Furthermore, all reflective surfaces 330 are used to deflect the imaging ray L. This allows for the provision of multiple reflective surfaces to meet optical and mechanical requirements, resulting in a more suitable optical path configuration and achieving miniaturization. Moreover, the reflective surfaces 330 are orthogonal to each other. This allows for a shorter optical path design that shortens the focusing drive distance.

[0143] Depend on Figure 3A , Figure 3B and Figure 3D It is understood that the light-emitting surface 320 includes an optical section 321 and an arc-shaped step structure 322. The arc-shaped step structure 322 is disposed on the outer periphery of the optical section 321, and the arc-shaped step structure 322 forms an arc with the center of the optical section 321. The optical section 321 includes an optical aspherical surface 324, and the optical aspherical surface 324 is located at the center of the optical section 321. Specifically, the plastic light-reflecting element 300 can have optical refractive power, which is beneficial for repairing aberrations to achieve high-resolution imaging quality. In the third embodiment, the arc-shaped step structure 322 includes multiple arcs that are spaced apart from each other. The arc-shaped step structure 322 is concave, and a concave step means that the optical section 321 is lower than the outer periphery of the optical section 321.

[0144] Depend on Figure 3D and Figure 3E It can be seen that setting arc step structures 312, 322, and 332 on the optical surface (i.e., the light-incident surface 310, the light-exit surface 320, and the reflective surface 330) can further control the surface accuracy of the optical surface and reduce the dimensional tolerance of the optical surface.

[0145] Please refer to Figure 3F Its drawing is based on Figure 3A A schematic diagram of the parameters of the plastic light-transmitting element 300 in the third embodiment. (From...) Figure 3B and Figure 3F It can be seen that the shape of the injection mark structure 350 is a combination of trapezoid and crescent shape, but it is not limited to this shape. Furthermore, the surface characteristics of the injection mark structure 350 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 340a.

[0146] Depend on Figure 3F It is understood that the injection mark structure 350 includes an arc-shaped edge 351, wherein the arc-shaped edge 351 extends outward from the center of the injection mark structure 350. This allows for a stable and rapid injection rate, providing feasibility for mass production. In the third embodiment, the number of arc-shaped edges 351 is one, but this is not a limitation.

[0147] Cooperate Figure 3A and Figure 3F It can be seen that the area occupied by the injection mark structure 350 on the connecting surface 340a is Ag, the total area of ​​the connecting surface 340a is At, the step height between the arc step structures 312, 322, 332 and the optical parts 311, 321, 331 is h, and the Abbe number of the plastic light conversion element 300 is V. The parameters satisfy the conditions in Table 3 below.

[0148]

[0149]

[0150] <Fourth Embodiment>

[0151] Please refer to Figure 4A The diagram illustrates an electronic device 40 according to the fourth embodiment of this disclosure. Figure 4AAs can be seen, the electronic device 40 includes an imaging lens module (not shown) and an electronic photosensitive element 41, wherein the electronic photosensitive element 41 is disposed on an imaging surface 42 of the imaging lens module. Further, the imaging lens module includes a plastic light-reflecting element 400 and an imaging lens group 43, wherein the plastic light-reflecting element 400 is disposed on either the object side or the image side of the imaging lens group 43. In the fourth embodiment, the plastic light-reflecting element 400 is disposed on the image side of the imaging lens group 43. Specifically, the plastic light-reflecting element 400 is suitable for use in telephoto imaging lens modules (full angle of view less than 40 degrees). This effectively reduces the size of the imaging lens module.

[0152] Please refer to Figure 4B and Figure 4C ,in Figure 4B Drawing according to Figure 4A A perspective view of the plastic light-transmitting element 400 in the fourth embodiment. Figure 4C Drawing according to Figure 4A Another perspective view of the plastic light-transmitting element 400 in the fourth embodiment. Figure 4B and Figure 4C It is understood that the plastic light-reflecting element 400 includes a light-incident surface 410, a light-emitting surface 420, a reflective surface 430, a connecting surface 440, and a filler mark structure 450. The light-incident surface 410 allows an imaging ray L to enter the plastic light-reflecting element 400, the light-emitting surface 420 allows the imaging ray L to exit the plastic light-reflecting element 400, the reflective surface 430 deflects the imaging ray L, and the connecting surface 440 connects to the light-incident surface 410, the light-emitting surface 420, and the reflective surface 430. The filler mark structures 450 are respectively disposed on the connecting surface 440. In the fourth embodiment, the number of reflective surfaces is two, the number of connecting surfaces is two, and the number of filler mark structures is two, but this is not a limitation.

[0153] The plastic light-transforming element 400 can be manufactured by injection molding and includes a transparent plastic material. The reflective surface 430 can reflect the imaging light L through a high-reflectivity film or through total internal reflection. Furthermore, the light-incident surface 410, the light-exit surface 420, and the reflective surface 430 can all be optical surfaces. Specifically, this disclosure utilizes a high-area-ratio injection mark structure 450 to enable more stable control of the plastic filling speed during the injection process, thereby avoiding residual traces of plastic flow during injection and reducing defects.

[0154] Specifically, the connecting surfaces 440 are arranged opposite each other and are parallel to each other. This simplifies the complexity of the mold, thereby reducing the production cost of the product, and makes the overall optical path less prone to skewing or deflection, thus reducing the probability of non-imaging light rays being generated. Furthermore, the connecting surfaces 440 are orthogonal to the light-incident surface 410, the light-exit surface 420, and the reflecting surface 430, respectively. This facilitates the structural design of the mold release mechanism.

[0155] Please refer to Figure 4D and Figure 4E ,in Figure 4D Drawing according to Figure 4A A schematic diagram of the light-incident surface 410 and the reflecting surface 430 of the plastic light-transforming element in the fourth embodiment. Figure 4E Drawing according to Figure 4A Another schematic diagram of the light-incident surface 410 and the reflective surface 430 of the plastic light-transforming element 400 in the fourth embodiment. Figure 4A , Figure 4B , Figure 4D and Figure 4E It is understood that the light-incident surface 410 includes an optical portion 411 and an arc-shaped step structure 412. The arc-shaped step structure 412 is disposed on the outer periphery of the optical portion 411, and the arc-shaped step structure 412 forms an arc with the center of the optical portion 411. The optical portion 411 includes a smooth plane. This provides better flatness to the light-incident surface 410. In the fourth embodiment, the arc-shaped step structure 412 includes a plurality of arcs that are spaced apart from each other. The arc-shaped step structure 412 is concave, and a concave step means that the optical portion 411 is lower than the outer periphery of the optical portion 411.

[0156] The reflecting surface 430 includes an optical section 431 and an arc-shaped step structure 432. The arc-shaped step structure 432 is disposed on the outer periphery of the optical section 431, and the arc-shaped step structure 432 forms an arc with the center of the optical section 431. The optical section 431 includes a smooth plane. This provides the reflecting surface 430 with better flatness. In the fourth embodiment, the arc-shaped step structure 432 includes multiple arcs that are spaced apart from each other. The arc-shaped step structure 432 is concave, meaning that the optical section 431 is lower than its outer periphery.

[0157] Furthermore, all reflective surfaces 430 are used to deflect the imaging ray L. In this way, multiple reflective surfaces can be provided according to optical and mechanical requirements to obtain a more suitable optical path configuration, thereby achieving miniaturization.

[0158] Depend on Figure 4A and Figure 4B It is understood that the light-emitting surface 420 includes an optical section 421 and an arc-shaped step structure 422. The arc-shaped step structure 422 is disposed on the outer periphery of the optical section 421, and the arc-shaped step structure 422 forms an arc with the center of the optical section 421. The optical section 421 includes a smooth plane. This provides better flatness to the light-emitting surface 420. In the fourth embodiment, the arc-shaped step structure 422 includes a plurality of arcs that are spaced apart from each other. The arc-shaped step structure 422 is concave, and a concave step means that the optical section 421 is lower than the outer periphery of the optical section 421.

[0159] Depend on Figure 4B, Figure 4D and Figure 4E It can be seen that setting arc step structures 412, 422, and 432 on the optical surface (i.e., the light-incident surface 410, the light-exit surface 420, and the reflecting surface 430) can further control the surface accuracy of the optical surface and reduce the dimensional tolerance of the optical surface.

[0160] Please refer to Figure 4F Its drawing is based on Figure 4A A schematic diagram of the parameters of the plastic light-transmitting element 400 in the fourth embodiment. Figure 4B , Figure 4C and Figure 4F It can be seen that the shape of the injection mark structure 450 is a combination of polygon and two crescent shapes, but it is not limited to this shape. Furthermore, the surface characteristics of the injection mark structure 450 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 440.

[0161] Depend on Figure 4F It is understood that the injection mark structure 450 includes an arc-shaped edge 451, wherein the arc-shaped edge 451 extends outward from the center of the injection mark structure 450. This allows for a stable and rapid injection rate, providing feasibility for mass production. In the fourth embodiment, the number of arc-shaped edges 451 is two, but this is not a limitation.

[0162] Cooperate Figure 4A and Figure 4F It can be seen that the area occupied by the injection mark structure 450 on the connecting surface 440 is Ag, the total area of ​​the connecting surface 440 is At, the step height between the arc step structures 412, 422, 432 and the optical parts 411, 421, 431 is h, and the Abbe number of the plastic light conversion element 400 is V. The parameters satisfy the conditions in Table 4 below.

[0163]

[0164] <Fifth Embodiment>

[0165] Please refer to Figure 5 The diagram illustrates the connection surface 540 and the injection mark structure 550 according to the fifth embodiment of this disclosure. Figure 5 As can be seen, the plastic light-reflecting element (not shown) includes a light-incident surface (not shown), a light-exiting surface (not shown), at least one reflective surface (not shown), a connecting surface 540, and at least one injection mark structure 550. The light-incident surface is used to allow an imaging ray (not shown) to enter the plastic light-reflecting element, the light-exiting surface is used to allow the imaging ray to exit the plastic light-reflecting element, the reflective surface is used to deflect the imaging ray, the connecting surface 540 connects the light-incident surface, the light-exiting surface, and the reflective surface, and the injection mark structure 550 is disposed on the connecting surface 540.

[0166] Furthermore, the shape of the injection mark structure 550 is polygonal, but it is not limited to this shape. Moreover, the surface characteristics of the injection mark structure 550 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 540.

[0167] Furthermore, the injection mark structure 550 includes an arcuate edge 551, which extends outward from the center of the injection mark structure 550. This allows for a stable and rapid injection rate, providing feasibility for mass production. In the fifth embodiment, the number of arcuate edges 551 is three, but this is not a limitation.

[0168] The area occupied by the injection mark structure 550 on the connecting surface 540 is Ag, the total area of ​​the connecting surface 540 is At, the Abbe number of the plastic light-converting element is V, and the parameters satisfy the conditions in Table 5 below.

[0169]

[0170] Furthermore, the plastic light-transforming element 100 of the first embodiment can be formed into a filler mark structure 550 as in the fifth embodiment through different forms of filler channels, but is not limited thereto.

[0171] Furthermore, the structure and configuration of the remaining components in the fifth embodiment are the same as those in the first embodiment, and will not be described again here.

[0172] <Sixth Embodiment>

[0173] Please refer to Figure 6 The diagram illustrates the connection surface 640 and the injection mark structure 650 according to the sixth embodiment of this disclosure. Figure 6 As can be seen, the plastic light-reflecting element (not shown) includes a light-incident surface (not shown), a light-exiting surface (not shown), at least one reflective surface (not shown), a connecting surface 640, and at least one injection mark structure 650. The light-incident surface is used to allow an imaging ray (not shown) to enter the plastic light-reflecting element, the light-exiting surface is used to allow the imaging ray to exit the plastic light-reflecting element, the reflective surface is used to deflect the imaging ray, the connecting surface 640 connects the light-incident surface, the light-exiting surface, and the reflective surface, and the injection mark structure 650 is disposed on the connecting surface 640.

[0174] Furthermore, the shape of the injection mark structure 650 is triangular, but it is not limited to this shape. Moreover, the surface characteristics of the injection mark structure 650 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 640.

[0175] Furthermore, the injection mark structure 650 includes an arcuate edge 651, which extends outward from the center of the injection mark structure 650. This allows for a stable and rapid injection rate, providing feasibility for mass production. In the sixth embodiment, the number of arcuate edges 651 is one, but this is not a limitation.

[0176] The area occupied by the injection mark structure 650 on the connecting surface 640 is Ag, the total area of ​​the connecting surface 640 is At, the Abbe number of the plastic light-converting element is V, and the parameters satisfy the conditions in Table 6 below.

[0177]

[0178] Furthermore, the plastic light-transforming element 100 of the first embodiment can be formed into the injection mark structure 650 of the sixth embodiment through different forms of injection channels, but is not limited thereto.

[0179] Furthermore, the structure and configuration of the remaining components in the sixth embodiment are the same as those in the first embodiment, and will not be described again here.

[0180] <Seventh Embodiment>

[0181] Please refer to Figure 7 The diagram illustrates the connection surface 740 and the injection mark structure 750 according to the seventh embodiment of this disclosure. Figure 7 As can be seen, the plastic light-reflecting element (not shown) includes a light-incident surface (not shown), a light-exiting surface (not shown), at least one reflective surface (not shown), a connecting surface 740, and at least one injection mark structure 750. The light-incident surface is used to allow an imaging ray (not shown) to enter the plastic light-reflecting element, the light-exiting surface is used to allow the imaging ray to exit the plastic light-reflecting element, the reflective surface is used to deflect the imaging ray, the connecting surface 740 connects the light-incident surface, the light-exiting surface, and the reflective surface, and the injection mark structure 750 is disposed on the connecting surface 740.

[0182] Furthermore, the shape of the injection mark structure 750 is polygonal, but it is not limited to this shape. Moreover, the surface characteristics of the injection mark structure 750 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 740.

[0183] Furthermore, the injection mark structure 750 includes an arcuate edge 751, which extends outward from the center of the injection mark structure 750. This allows for a stable and rapid injection rate, providing feasibility for mass production. In the seventh embodiment, the number of arcuate edges 751 is four, but this is not a limitation.

[0184] The area occupied by the injection mark structure 750 on the connecting surface 740 is Ag, the total area of ​​the connecting surface 740 is At, the Abbe number of the plastic light-converting element is V, and the parameters satisfy the conditions in Table 7 below.

[0185]

[0186] Furthermore, the plastic light-transforming element 100 of the first embodiment can be formed into the injection mark structure 750 of the seventh embodiment through different forms of injection channels, but it is not limited thereto.

[0187] Furthermore, the structure and configuration of the remaining components in the seventh embodiment are the same as those in the first embodiment, and will not be described again here.

[0188] <Eighth Embodiment>

[0189] Please refer to Figure 8 The diagram illustrates the connection surface 840 and the injection mark structure 850 according to the eighth embodiment of this disclosure. Figure 8 As can be seen, the plastic light-reflecting element (not shown) includes a light-incident surface (not shown), a light-exiting surface (not shown), at least one reflective surface (not shown), a connecting surface 840, and at least one injection mark structure 850. The light-incident surface is used to allow an imaging ray (not shown) to enter the plastic light-reflecting element, the light-exiting surface is used to allow the imaging ray to exit the plastic light-reflecting element, the reflective surface is used to deflect the imaging ray, the connecting surface 840 connects the light-incident surface, the light-exiting surface, and the reflective surface, and the injection mark structure 850 is disposed on the connecting surface 840.

[0190] Furthermore, the shape of the injection mark structure 850 is trapezoidal, but it is not limited to this shape. Moreover, the surface characteristics of the injection mark structure 850 are different from the surface characteristics of the non-injection mark structure area in the connecting surface 840.

[0191] The area occupied by the injection mark structure 850 on the connecting surface 840 is Ag, the total area of ​​the connecting surface 840 is At, the Abbe number of the plastic light-converting element is V, and the parameters satisfy the conditions in Table 8 below.

[0192]

[0193] Furthermore, the plastic light-transforming element 100 of the first embodiment can be formed into a filler mark structure 850 as in the eighth embodiment through different forms of filler channels, but is not limited thereto.

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

[0195] <Ninth Embodiment>

[0196] Figure 9A A schematic diagram of the electronic device 90 according to the ninth embodiment of this disclosure is shown. Figure 9B Drawing according to Figure 9A Another schematic diagram of the electronic device 90 in the ninth embodiment. Figure 9A and Figure 9BAs can be seen, the electronic device 90 of the ninth embodiment is a smartphone. The electronic device 90 includes an imaging lens module (not shown) and an electronic photosensitive element (not shown), wherein the electronic photosensitive element is disposed on an imaging surface (not shown) of the imaging lens module, and the imaging lens module includes an ultra-wide-angle camera module 92, a high-resolution camera module 93, and a telephoto camera module 94. Furthermore, the imaging lens module includes a plastic light-reflecting element (not shown) and an imaging lens group (not shown), wherein the plastic light-reflecting element is disposed on either the object side or the image side of the imaging lens group.

[0197] Furthermore, the telephoto camera module 94 can be any of the imaging lens modules in the first to eighth embodiments described above, but this disclosure is not limited thereto. This helps to meet the current market requirements for mass production and aesthetics of imaging lens modules mounted on electronic devices.

[0198] Furthermore, the user enters the shooting mode through the user interface 91 of the electronic device 90. In the ninth embodiment, the user interface 91 can be a touch screen, which is used to display the image and has touch functionality. It can also be used to manually adjust the shooting angle to switch between different imaging lens modules. At this time, the imaging lens module gathers the imaging light onto the electronic photosensitive element and outputs the relevant electronic signals of the image to the image signal processing element (ISP) 95.

[0199] Depend on Figure 9B As can be seen, depending on the camera specifications of the electronic device 90, the electronic device 90 may also include an optical image stabilization component (not shown in the figure). Furthermore, the electronic device 90 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 96, 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 module of the electronic device 90, so as to obtain good image quality and help the electronic device 90 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 91 and manually operate the framing range on the user interface 91 to achieve the WYSIWYG autofocus function.

[0200] Furthermore, the imaging lens module, electronic image sensor, optical image stabilization component, 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 95 and other related components via a connector (not shown) to execute the shooting process. Current electronic devices, such as smartphones, are trending towards thinner and lighter designs. By mounting the imaging lens module 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, the design and circuit layout requirements within the limited internal space of the electronic device can be met, providing greater flexibility. This also allows for more flexible control of the autofocus function of the imaging lens module through the touchscreen of the electronic device. In the ninth embodiment, the electronic device 90 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 95 and other related components via corresponding connectors to execute the shooting process. In other embodiments (not shown), 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.

[0201] Furthermore, the electronic device 90 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.

[0202] Figure 9C Drawing according to Figure 9A A schematic diagram of the image in the ninth embodiment. (By...) Figure 9C It can be seen that the ultra-wide-angle camera module 92 can capture images of a larger range and has the function of capturing more scenery.

[0203] Figure 9D Drawing according to Figure 9A Another image illustration in the ninth embodiment. (By...) Figure 9D It can be seen that the high-pixel camera module 93 can capture images within a certain range and also has high pixel count, with high resolution and low distortion.

[0204] Figure 9E Drawing according to Figure 9A Another image illustration of the ninth embodiment. (By...) Figure 9E It is known that the telephoto camera module 94 has a high magnification function, which can capture images at a distance and magnify them to a high degree.

[0205] Depend on Figures 9C to 9EIt is known that by using imaging lens modules with different focal lengths for framing and combining them with image processing technology, the electronic device 90 can achieve the function of zooming.

[0206] <Tenth Embodiment>

[0207] Please refer to Figure 10A and Figure 10B ,in Figure 10A A schematic diagram of an electronic device 1000 according to the tenth embodiment of this disclosure is shown. Figure 10B Drawing according to Figure 10A A partial perspective view of the electronic device 1000 in the tenth embodiment. Figure 10A and Figure 10B It is understood that the electronic device 1000 is a smartphone, and the electronic device 1000 includes an imaging lens module (not shown) and an electronic photosensitive element (not shown). The electronic photosensitive element is disposed on an imaging surface (not shown) of the imaging lens module, and the imaging lens module includes ultra-wide-angle camera modules 1011, 1012, wide-angle camera modules 1013, 1014, telephoto camera modules 1015, 1016, 1017, 1018 and TOF module (Time-Of-Flight) 1019. The TOF module 1019 may also be other types of imaging devices and is not limited to this configuration.

[0208] Furthermore, the telephoto camera modules 1015, 1016, 1017, and 1018 can be any of the imaging lens modules in the first to eighth embodiments described above, but this disclosure is not limited thereto. This helps to meet the current market requirements for mass production and appearance of imaging lens modules mounted on electronic devices.

[0209] Furthermore, telephoto camera modules 1017 and 1018 are used to deflect light, but this disclosure is not limited to this.

[0210] Depending on the camera specifications of the electronic device 1000, the electronic device 1000 may also include an optical image stabilization component (not shown). Furthermore, the electronic device 1000 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 1020, 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 performance of the autofocus function and optical image stabilization component configured in the imaging lens module of the electronic device 1000, resulting in good image quality. This also helps the electronic device 1000 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.

[0211] Furthermore, the structure and configuration of the remaining components in the tenth embodiment are the same as those in the ninth embodiment, and will not be described again here.

[0212] Although the present disclosure has been presented above with reference to embodiments, it is not intended to limit the scope of the present disclosure. Anyone skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope defined in the appended claims.

Claims

1. A plastic light-transmitting element, characterized in that, Include: A light-incident surface is used to allow an imaging ray to be incident on the plastic light-reflecting element; One light-emitting surface is used to allow the imaging light to exit from the plastic light-transmitting element; At least one reflective surface is used to deflect the imaging light rays; At least one connecting surface connects the light-incident surface, the light-exiting surface, and the at least one reflecting surface; as well as At least one injection mark structure is provided on the at least one connecting surface; The light-incident surface, the light-exit surface, and the at least one reflective surface include an optical part and an arc step structure. The arc step structure is disposed on the outer periphery of the optical part, and the arc step structure forms an arc with the center of the optical part. There is a height difference between the arc-shaped step structure and the optical part; The step height between the arc-shaped step structure and the optical part is h, which satisfies the following condition: 0.003mm <h<0.32mm。 2. The plastic light-transmitting element according to claim 1, characterized in that, At least two of the light-incident surface, the light-exit surface, and the at least one reflective surface respectively include the optical part and the arc step structure. Each arc step structure is disposed on the outer periphery of each optical part, and each arc step structure forms an arc with the center of each optical part.

3. The plastic light-transmitting element according to claim 2, characterized in that, The light-incident surface, the light-exit surface, and the at least one reflective surface each include the optical element and the arc step structure. Each arc step structure is disposed on the outer periphery of the optical element, and each arc step structure forms an arc with the center of the optical element.

4. The plastic light-transmitting element according to claim 1, characterized in that, The number of at least one connecting surface is two, and both connecting surfaces are connected to the light-incident surface, the light-exit surface and the at least one reflecting surface, and the two connecting surfaces are arranged opposite to each other.

5. The plastic light-transmitting element according to claim 4, characterized in that, The number of the at least one injection mark structure is two, and the two injection mark structures are respectively disposed on the two connecting surfaces.

6. The plastic light-transmitting element according to claim 4, characterized in that, The two connecting surfaces are parallel to each other.

7. The plastic light-transmitting element according to claim 1, characterized in that, The at least one connecting surface is orthogonal to the light-incident surface, the light-exiting surface, and the at least one reflecting surface, respectively.

8. The plastic light-transmitting element according to claim 1, characterized in that, The optical part contains a smooth plane.

9. The plastic light-transmitting element according to claim 1, characterized in that, The optical section includes an optical aspherical surface located at the center of the optical section.

10. The plastic light-transmitting element according to claim 1, characterized in that, The area occupied by the at least one injection mark structure on the at least one connecting surface is Ag, and the total area of ​​the at least one connecting surface is At, which satisfies the following condition: 35% ≤ Ag / At ≤ 80%.

11. The plastic light-transmitting element according to claim 1, characterized in that, The Abbe number of this plastic optical switching element is V, and it satisfies the following condition: 40≤V≤72。 12. The plastic light-transmitting element according to claim 1, characterized in that, The number of at least one reflective surface is two, and both reflective surfaces are used to deflect the imaging light.

13. The plastic light-transmitting element according to claim 12, characterized in that, The two reflecting surfaces are orthogonal to each other.

14. The plastic light-transmitting element according to claim 12, characterized in that, The light-incident surface, the light-exit surface, and the two reflective surfaces each include the optical element and the arc step structure. Each arc step structure is disposed on the outer periphery of the optical element, and each arc step structure forms an arc with the center of the optical element.

15. The plastic light-transmitting element according to claim 1, characterized in that, The at least one injection mark structure includes an arc-shaped edge that extends outward from the center of the at least one injection mark structure.

16. The plastic light-transmitting element according to claim 1, characterized in that, The step height between the arc-shaped step structure and the optical component is h, which satisfies the following condition: 0.005mm≤h≤0.17mm.

17. An imaging lens module, characterized in that, Include: The plastic light-transfer element as described in claim 1; and An imaging lens group, wherein the plastic light-deflecting element is disposed on one of the object side and the image side of the imaging lens group.

18. An electronic device, characterized in that, Include: The imaging lens module as described in claim 17; and An electronic photosensitive element is disposed on an imaging surface of the imaging lens module.

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