Plastic optical turning element, imaging lens module and electronic device

Abstract

The invention discloses a plastic optical turning element, an imaging lens module and an electronic device. The plastic optical turning element comprises an incident surface, at least one reflecting surface, an emergent surface and a reflecting film, light enters the plastic optical turning element through the incident plane. The reflecting surface is used for changing the advancing direction of light. The light leaves the plastic optical turning element through the emergent surface. The reflecting film is arranged on the reflecting surface, a bottom of the reflecting film is in physical contact with the reflecting surface, a top of the reflecting film is opposite to the bottom, and the reflecting film sequentially comprises a first multilayer film, a first connecting layer, a first silver atom layer and an isolating layer from the bottom to the top away from the reflecting surface. Through the configuration of each layer of the reflective film, the transmissivity and the reflected light of the light can be adjusted, and the stability of each layer is facilitated.

Description

Technical Field

[0001] The present disclosure relates to a plastic optical turning element and an imaging lens module, and particularly to a plastic optical turning element and an imaging lens module applied to a portable electronic device. Background Art

[0002] In recent years, portable electronic devices have developed rapidly. For example, smart electronic devices, tablet computers, etc. have flooded into modern people's lives, and the imaging lenses installed on portable electronic devices have also developed vigorously. However, with the increasing progress of technology, users' requirements for the imaging quality of imaging lenses are also getting higher and higher. Therefore, developing an imaging lens that can improve imaging quality has become an important and urgent problem in the industry. Summary of the Invention

[0003] The present disclosure provides a plastic optical turning element, an imaging lens module, and an electronic device. Through the configuration of each layer of the reflective film, it helps to adjust the light transmittance and reflected light, and is beneficial to the stability between layers.

[0004] According to an aspect of the present disclosure, a plastic optical turning element is provided, which includes an incident surface, at least one reflective surface, an exit surface, and a reflective film. Light enters the plastic optical turning element through the incident surface. The reflective surface is used to change the traveling direction of the light. The light leaves the plastic optical turning element through the exit surface. The reflective film is disposed on the reflective surface. A bottom of the reflective film is in physical contact with the reflective surface, and a top of the reflective film is disposed opposite to the bottom. The reflective film sequentially includes a first multi-layer film, a first connection layer, a first silver atom layer, an isolation layer, and a second multi-layer film from the bottom in a direction away from the reflective surface towards the top. The first multi-layer film includes at least one first low refractive index layer and at least one first high refractive index layer. The refractive index of the first high refractive index layer is higher than that of the first low refractive index layer, and the first high refractive index layer and the first low refractive index layer are alternately stacked. The material of the first connection layer includes aluminum oxide. The material of the first silver atom layer includes silver. The material of the isolation layer includes at least one of nickel, titanium, vanadium, chromium, nickel oxide, titanium oxide, vanadium oxide, and chromium oxide. The second multi-layer film includes at least one second low refractive index layer and at least one second high refractive index layer. The refractive index of the second high refractive index layer is higher than that of the second low refractive index layer, and the second high refractive index layer and the second low refractive index layer are alternately stacked. The thickness of the first multi-layer film is Dmf1, the thickness of the isolation layer is Db, and the distance between the first silver atom layer and the bottom is Hag1, which satisfy the following conditions: 70nm < Dmf1 < 420nm; 20nm < Db < 180nm; and 90nm < Hag1 < 550nm.

[0005] The plastic optical turning element according to the foregoing aspect, wherein the reflective film may further include a second silver atom layer and a second connection layer. The material of the second silver atom layer includes silver, which is located between the isolation layer and the second multi-layer film, is farther from the reflective surface than the isolation layer, and is in physical contact with the isolation layer. The material of the second connection layer includes aluminum oxide, which is farther from the reflective surface than the second silver atom layer and is in physical contact with the second silver atom layer.

[0006] The plastic optical turning element according to the foregoing aspect, wherein the number of film layers of the reflective film and the film layer materials of the reflective film are symmetrically arranged with the isolation layer as the center.

[0007] The plastic optical turning element according to the foregoing aspect, wherein at least one of the incident surface, the exit surface, and the reflective surface may have a curvature.

[0008] The plastic optical turning element according to the foregoing aspect, wherein the number of reflective surfaces may be at least two.

[0009] The plastic optical turning element according to the foregoing aspect, wherein the distance between the second silver atom layer and the top is Hag2, which satisfies the following condition: 60 nm < Hag2 < 480 nm.

[0010] The plastic optical turning element according to the foregoing aspect, wherein the distance between the first silver atom layer and the bottom is Hag1, which satisfies the following condition: 180 nm < Hag1 < 460 nm.

[0011] The plastic optical turning element according to the foregoing aspect, wherein the thickness of the isolation layer is Db, which satisfies the following condition: 35 nm < Db < 120 nm.

[0012] The plastic optical turning element according to the foregoing aspect, wherein an average reflectivity of the reflective film corresponding to the wavelength range of 400 nm to 1000 nm is measured from the bottom, and the average reflectivity is R1, which satisfies the following condition: 85% < R1 < 100%. In addition, an average reflectivity of the reflective film corresponding to the wavelength range of 400 nm to 1000 nm is measured from the top, and the average reflectivity is R2, which satisfies the following condition: 95% < R2 < 100%.

[0013] The plastic optical turning element according to the foregoing aspect, wherein the material of the isolation layer may mainly be nickel.

[0014] The plastic optical turning element according to the foregoing aspect may further include a plurality of connection surfaces connecting the incident surface, the exit surface, and the reflective surface. Among them, a first-order difference structure exists between the reflective surface and one of the adjacent connection surfaces, and the first-order difference structure forms a height difference between the reflective surface and the connection surface. The height difference is Hs, which satisfies the following condition: 0.005 mm ≤ Hs ≤ 0.22 mm.

[0015] According to an aspect of the present disclosure, a plastic optical turning element is provided, which includes an incident surface, at least one reflecting surface, an exit surface, and a reflective film. Light enters the plastic optical turning element through the incident surface. The reflecting surface is used to change the traveling direction of the light. The light leaves the plastic optical turning element through the exit surface. The reflective film is disposed on the reflecting surface. A bottom of the reflective film is in physical contact with the reflecting surface, and a top of the reflective film is disposed opposite to the bottom. The reflective film sequentially includes a first multi-layer film, a first connecting layer, a first silver atom layer, and an insulating layer from the bottom toward the top away from the reflecting surface. The first multi-layer film includes at least one first low refractive index layer and at least one first high refractive index layer. The refractive index of the first high refractive index layer is higher than that of the first low refractive index layer, and the first high refractive index layer and the first low refractive index layer are alternately stacked. The material of the first connecting layer includes aluminum oxide. The material of the first silver atom layer includes silver. The material of the insulating layer includes at least one of nickel, titanium, vanadium, chromium, nickel oxide, titanium oxide, vanadium oxide, and chromium oxide. The thickness of the first multi-layer film is Dmf1, the thickness of the insulating layer is Db, and the distance between the first silver atom layer and the reflecting surface is Hag1, which satisfy the following conditions: 0.1 < Db / Dmf1 < 0.9; 70 nm < Dmf1 < 420 nm; and 90 nm < Hag1 < 550 nm.

[0016] The plastic optical turning element according to the foregoing aspect, wherein the reflective film may further include a second silver atom layer, the material of which includes silver, which is farther from the reflecting surface than the insulating layer and is in physical contact with the insulating layer.

[0017] The plastic optical turning element according to the foregoing aspect, wherein at least one of the incident surface, the exit surface, and the reflecting surface may have a curvature.

[0018] The plastic optical turning element according to the foregoing aspect, wherein the number of the reflecting surfaces may be at least two.

[0019] The plastic optical turning element according to the foregoing aspect, wherein the distance between the first silver atom layer and the bottom is Hag1, which satisfies the following conditions: 180 nm < Hag1 < 460 nm.

[0020] The plastic optical turning element according to the foregoing aspect, wherein the thickness of the insulating layer is Db, which satisfies the following conditions: 35 nm < Db < 120 nm.

[0021] The plastic optical turning element according to the foregoing aspect, wherein the thickness of the first multi-layer film is Dmf1, and the thickness of the insulating layer is Db, which satisfies the following conditions: 0.1 < Db / Dmf1 < 0.4.

[0022] The plastic optical turning element according to the foregoing aspect, wherein an average reflectance of the reflection film measured from the bottom corresponding to the wavelength band of 400 nm to 1000 nm is R1, and R1 satisfies the following condition: 85% < R1 < 100%. In addition, an average reflectance of the reflection film measured from the top corresponding to the wavelength band of 400 nm to 1000 nm is R2, and R2 satisfies the following condition: 95% < R2 < 100%.

[0023] The plastic optical turning element according to the foregoing aspect, wherein the material of the isolation layer may mainly be nickel.

[0024] The plastic optical turning element according to the foregoing aspect, wherein the plastic optical turning element may further include a plurality of connection surfaces connecting the incident surface, the exit surface, and the reflection surface, and a first-order difference structure exists between the reflection surface and one of the adjacent connection surfaces, and the first-order difference structure forms a height difference Hs between the reflection surface and the connection surface, and Hs satisfies the following condition: 0.005 mm ≤ Hs ≤ 0.22 mm.

[0025] According to an aspect of the present disclosure, an imaging lens module is provided, which includes the plastic optical turning element according to any one of the foregoing aspects.

[0026] According to an aspect of the present disclosure, an electronic device is provided, which includes the imaging lens module according to the foregoing aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A A schematic diagram of an imaging lens module according to a first embodiment of a first implementation manner of the present disclosure;

[0028] Figure 1B Illustrating in accordance with Figure 1A A side view of a plastic optical turning element according to a first embodiment of a first implementation manner;

[0029] Figure 1C Illustrating in accordance with Figure 1B A perspective view of a plastic optical turning element;

[0030] Figure 1D Illustrating in accordance with Figure 1B Another perspective view of a plastic optical turning element;

[0031] Figure 1E Illustrating in accordance with Figure 1B A schematic diagram of a reflection film;

[0032] Figure 1F Illustrating in accordance with Figure 1E A schematic diagram of a first multilayer film;

[0033] Figure 1G Illustrating in accordance with Figure 1E A schematic diagram of a second multilayer film;

[0034] Figure 1H for Figure 1D The reflectivity of the first and second sides of the intermediate reflective film;

[0035] Figure 1I A perspective view of a plastic optical switching element according to a second embodiment of the first embodiment of the present disclosure is shown;

[0036] Figure 2A A schematic diagram illustrating an imaging lens module according to a first embodiment of the second embodiment of this disclosure;

[0037] Figure 2B Drawing according to Figure 2A Side view of the plastic optical switching element of the first embodiment of the second embodiment;

[0038] Figure 2C Drawing according to Figure 2B A 3D view of a plastic optical switching element;

[0039] Figure 2D Drawing according to Figure 2B Schematic diagram of the reflective film;

[0040] Figure 2E Drawing according to Figure 2D Schematic diagram of the first multilayer film;

[0041] Figure 2F Drawing according to Figure 2D Schematic diagram of the second multilayer film;

[0042] Figure 2G for Figure 2C The reflectivity of the first and second sides of the intermediate reflective film;

[0043] Figure 3A A schematic diagram illustrating an imaging lens module according to a first embodiment of the third embodiment of this disclosure;

[0044] Figure 3B Drawing according to Figure 3A Side view of the plastic optical switching element of the first embodiment of the third embodiment;

[0045] Figure 3C Drawing according to Figure 3B A 3D view of a plastic optical switching element;

[0046] Figure 3D Drawing according to Figure 3B Schematic diagram of the reflective film;

[0047] Figure 3E Drawing according to Figure 3D Schematic diagram of the first multilayer film;

[0048] Figure 3F Drawing according to Figure 3D Schematic diagram of the second multilayer film;

[0049] Figure 4A A schematic diagram of an electronic device according to the fourth embodiment of this disclosure is shown;

[0050] Figure 4B Drawing according to Figure 4A Another schematic diagram of the electronic device in the fourth embodiment;

[0051] Figure 4C Drawing according to Figure 4A A schematic diagram of an image captured by an electronic device in the fourth embodiment;

[0052] Figure 4D Drawing according to Figure 4A Another image diagram captured by the electronic device in the fourth embodiment;

[0053] Figure 4E Drawing according to Figure 4A Another image diagram captured by the electronic device in the fourth embodiment; and

[0054] Figure 5 A schematic diagram of an electronic device according to the fifth embodiment of this disclosure is shown.

[0055] [Symbol Explanation]

[0056] 100, 200, 300: Imaging lens module

[0057] 101, 201: First lens assembly

[0058] 102, 202: Second lens assembly

[0059] 103: Third lens assembly

[0060] 1011,1021,1031,2011,2021,3011: Lens tube elements

[0061] 1012,1022,1032,2012,2022,3012: Lens

[0062] 104: Optical Conversion Element

[0063] 105, 205, 305: Imaging planes

[0064] 110, 210, 310: Plastic optical switching elements

[0065] 111,211,311: Incident surface

[0066] 112,212,3121,3122,3123: Reflecting surfaces

[0067] 113,213,313: exit surface

[0068] 114,214,3141,3142,3143: Reflective film

[0069] 114a, 214a: First side

[0070] 114b, 214b: Second side

[0071] 1141, 2141, 31411: First multilayer film

[0072] 1141a, 2141a, 31411a: First low refractive index layer

[0073] 1141b, 2141b, 31411b: First high refractive index layer

[0074] 1142, 2142, 31412: First connection layer

[0075] 1143, 2143, 31413: First silver atomic layer

[0076] 1144,2144,31414: Insulation layer

[0077] 1145, 2145: Second silver atom layer

[0078] 1146, 2146: Second connection layer

[0079] 1147, 2147, 31417: Second multilayer film

[0080] 1147a, 2147a, 31417a: Second low-refractive-index layer

[0081] 1147b, 2147b, 31417b: Second high refractive index layer

[0082] 115, 215, 315: Connecting surfaces

[0083] 1151, 2151: Step structure

[0084] 116: Injection marks

[0085] 2061, 2062: Outer shell

[0086] 207: Base

[0087] 40, 50: Electronic devices

[0088] 501: Flash module

[0089] 41: High-resolution camera module

[0090] 42, 51, 52: Ultra-wide-angle camera module

[0091] 43, 44, 55, 56, 57, 58: Telephoto camera module

[0092] 45: Imaging signal processing element

[0093] 46: User Interface

[0094] 53, 54: Wide-angle camera module

[0095] 59: TOF Module

[0096] Hs, Hs': Height difference

[0097] X1: First optical axis

[0098] X2: Second optical axis

[0099] X3: Third optical axis Detailed Implementation

[0100] The present disclosure provides a plastic optical turning element, which includes an incident surface, at least one reflecting surface, an exit surface, and a reflective film. Light enters the plastic optical turning element through the incident surface. The reflecting surface is used to change the traveling direction of the light. The light leaves the plastic optical turning element through the exit surface. The reflective film is disposed on the reflecting surface, a bottom of the reflective film is in physical contact with the reflecting surface, a top of the reflective film is disposed opposite to the bottom, and the reflective film sequentially includes a first multilayer film, a first connecting layer, a first silver atom layer, an isolation layer, and a second multilayer film from the bottom toward the top away from the reflecting surface. The first multilayer film includes at least one first low refractive index layer and at least one first high refractive index layer, the refractive index of the first high refractive index layer is higher than that of the first low refractive index layer, and the first high refractive index layer and the first low refractive index layer are alternately stacked. The material of the first connecting layer includes aluminum oxide. The material of the first silver atom layer includes silver. The material of the isolation layer includes at least one of nickel, titanium, vanadium, chromium, nickel oxide, titanium oxide, vanadium oxide, and chromium oxide. The second multilayer film includes at least one second low refractive index layer and at least one second high refractive index layer, the refractive index of the second high refractive index layer is higher than that of the second low refractive index layer, and the second high refractive index layer and the second low refractive index layer are alternately stacked. The thickness of the first multilayer film is Dmf1, the thickness of the isolation layer is Db, and the distance between the first silver atom layer and the bottom is Hag1, which satisfy the following conditions: 70 nm < Dmf1 < 420 nm; 20 nm < Db < 180 nm; and 90 nm < Hag1 < 550 nm. Thereby, the first multilayer film helps to increase the transmittance of light and can also adjust the spectrum of the reflected light; the first connecting layer helps to improve the connection stability of the first silver atom layer; the second multilayer film helps to protect the isolation layer and further strengthen the protection of the first silver atom layer; when the thickness of the isolation layer satisfies the condition, it helps to protect the first silver atom layer and prevent the first silver atom layer from being oxidized or damaged by external force; increasing the distance between the first silver atom layer and the reflecting surface helps to prevent the first silver atom layer from being oxidized in a high-temperature and high-humidity environment.

[0101] Specifically, the isolation layer can also be in the form of an alloy of at least two metals, such as a nickel-titanium alloy, but the present disclosure is not limited thereto. In addition, in the present disclosure, the main material of each layer means that the main material accounts for more than 50% of the overall material.

[0102] The reflective film may further include a second silver atom layer and a second connecting layer. The material of the second silver atom layer includes silver, which is located between the isolation layer and the second multilayer film, is farther from the reflecting surface than the isolation layer, and is in physical contact with the isolation layer. The material of the second connecting layer includes aluminum oxide, which is farther from the reflecting surface than the second silver atom layer and is in physical contact with the second silver atom layer. Thereby, adding the second silver atom layer in the reflective film can make both sides of the reflective film have a reflective function, which helps to quickly inspect the optical quality of the reflective film.

[0103] The number of film layers of the reflective film and the film layer materials of the reflective film may be symmetrically arranged centered on the isolation layer. Thereby, the optical functions on both sides of the reflective film tend to be consistent, which helps to inspect the optical quality of the reflective film.

[0104] At least one of the incident surface, the exit surface, and the reflection surface may have a curvature. Since it is not easy to control the reflection direction of light when there is a curvature and it is not easy to inspect the optical quality of the reflective film, when the surface of the plastic optical turning element has a curvature, the reflective film with double-sided reflection function helps to quickly inspect the optical quality of the reflective film. In addition, an antireflection film may be further provided on the incident surface and the exit surface.

[0105] The number of reflection surfaces may be at least two. Since light may be reflected multiple times inside the plastic optical turning element with multiple reflection surfaces, however, the detection instrument cannot measure the quality of the reflected light inside the plastic optical turning element. The reflective film with double-sided reflection function helps to inspect the optical quality of the reflective film from the outside of the plastic optical turning element.

[0106] The distance between the second silver atom layer and the top is Hag2, which satisfies the following condition: 60nm < Hag2 < 480nm. Thereby, it helps to avoid oxidation of the second silver atom layer.

[0107] The distance between the first silver atom layer and the bottom is Hag1, which satisfies the following condition: 180nm < Hag1 < 460nm. Thereby, it helps to avoid oxidation of the first silver atom layer.

[0108] The thickness of the isolation layer is Db, which satisfies the following condition: 35nm < Db < 120nm. Thereby, it helps to protect the silver atom layer.

[0109] In the plastic optical turning element, an average reflectance of the reflective film corresponding to the wavelength range of 400nm to 1000nm is measured from the bottom, and the average reflectance is R1, which satisfies the following condition: 85% < R1 < 100%. Thereby, it helps to improve the imaging quality of the imaging lens module.

[0110] In the plastic optical turning element, an average reflectance of the reflective film corresponding to the wavelength range of 400nm to 1000nm is measured from the top, and the average reflectance is R2, which satisfies the following condition: 95% < R2 < 100%. Thereby, it helps to inspect the quality of the reflective film.

[0111] The material of the isolation layer may mainly be nickel. Since nickel has good adhesion to silver atoms, it helps to avoid oxidation of the first silver atom layer.

[0112] The plastic optical turning element may further include a plurality of connecting surfaces that connect the incident surface, the exit surface, and the reflection surface. A first-order difference structure exists between the reflection surface and one of the adjacent connecting surfaces. The first-order difference structure forms a height difference between the reflection surface and the connecting surface, and the height difference is Hs, which satisfies the following condition: 0.005 mm ≤ Hs ≤ 0.22 mm. Thereby, it is beneficial to control the mold surface accuracy and is also beneficial for Automated Optical Inspection (AOI). Specifically, a filling mark may be provided on the connecting surface. The filling mark on the connecting surface helps to avoid the generation of stray light. Additionally, a light-absorbing material may be provided on the connecting surface to reduce light reflection. Furthermore, the first-order difference structure may also be provided on the incident surface or the exit surface, and is not limited to the embodiments or examples disclosed in this disclosure.

[0113] This disclosure provides a plastic optical turning element, including an incident surface, at least one reflection surface, an exit surface, and a reflective film. Light enters the plastic optical turning element through the incident surface. The reflection surface is used to change the traveling direction of the light. The light leaves the plastic optical turning element through the exit surface. The reflective film is disposed on the reflection surface. A bottom of the reflective film is in solid contact with the reflection surface, and a top of the reflective film is disposed opposite to the bottom. The reflective film sequentially includes a first multi-layer film, a first connecting layer, a first silver atom layer, and an isolation layer from the bottom in a direction away from the reflection surface towards the top. The first multi-layer film includes at least one first low-refractive-index layer and at least one first high-refractive-index layer. The refractive index of the first high-refractive-index layer is higher than that of the first low-refractive-index layer, and the first high-refractive-index layer and the first low-refractive-index layer are alternately stacked. The material of the first connecting layer includes aluminum oxide. The material of the first silver atom layer includes silver. The material of the isolation layer includes at least one of nickel, titanium, vanadium, chromium, nickel oxide, titanium oxide, vanadium oxide, and chromium oxide. The thickness of the first multi-layer film is Dmf1, the thickness of the isolation layer is Db, and the distance between the first silver atom layer and the reflection surface is Hag1, which satisfies the following conditions: 0.1 < Db / Dmf1 < 0.9; 70 nm < Dmf1 < 420 nm; and 90 nm < Hag1 < 550 nm. Thereby, the first multi-layer film helps to increase the light transmittance and can also adjust the spectrum of the reflected light; the first connecting layer helps to improve the connection stability of the first silver atom layer; when the thickness of the isolation layer meets the conditions, it helps to protect the first silver atom layer from oxidation or external force damage; increasing the distance between the first silver atom layer and the reflection surface helps to avoid the oxidation of the first silver atom layer in a high-temperature and high-humidity environment.

[0114] Specifically, the isolation layer may also be in the form of an alloy of at least two metals, such as nickel-titanium alloy, and this disclosure is not limited thereto. Additionally, in this disclosure, the main material of each layer refers to that the main material accounts for more than 50% of the overall material.

[0115] The reflective film may further include a second silver atom layer, which is made of silver, is farther from the reflective surface than the isolation layer, and is in physical contact with the isolation layer. By adding the second silver atom layer in the reflective film, both sides of the reflective film can have reflective functions, which helps to quickly inspect the optical quality of the reflective film.

[0116] At least one of the incident surface, the exit surface, and the reflective surface may have a curvature. Since it is not easy to control the reflection direction of light when there is a curvature and it is not easy to inspect the optical quality of the reflective film, therefore, when the surface of the plastic optical turning element has a curvature, the reflective film with double-sided reflective functions helps to quickly inspect the optical quality of the reflective film. In addition, an anti-reflection film may be further provided on the incident surface and the exit surface.

[0117] The number of reflective surfaces may be at least two. Since light may be reflected multiple times inside the plastic optical turning element having multiple reflective surfaces, however, the detection instrument cannot measure the quality of the reflected light inside the plastic optical turning element, therefore, the reflective film with double-sided reflective functions helps to inspect the optical quality of the reflective film from the outside of the plastic optical turning element.

[0118] The distance between the first silver atom layer and the bottom is Hag1, which satisfies the following condition: 180nm < Hag1 < 460nm. Thereby, it helps to avoid oxidation of the first silver atom layer.

[0119] The thickness of the isolation layer is Db, which satisfies the following condition: 35nm < Db < 120nm. Thereby, it helps to protect the silver atom layer.

[0120] The thickness of the first multi-layer film is Dmf1, and the thickness of the isolation layer is Db, which satisfies the following condition: 0.1 < Db / Dmf1 < 0.4. Thereby, both sides of the first silver atom layer can be protected.

[0121] In the plastic optical turning element, an average reflectance of the reflective film corresponding to the wavelength range of 400nm to 1000nm is measured from the bottom, and the average reflectance is R1, which satisfies the following condition: 85% < R1 < 100%. Thereby, it helps to improve the imaging quality of the imaging lens module.

[0122] In the plastic optical turning element, an average reflectance of the reflective film corresponding to the wavelength range of 400nm to 1000nm is measured from the top, and the average reflectance is R2, which satisfies the following condition: 95% < R2 < 100%. Thereby, it helps to inspect the quality of the reflective film.

[0123] The material of the isolation layer may mainly be nickel. Since nickel has good adhesion to silver atoms, it helps to avoid oxidation of the first silver atom layer.

[0124] The plastic optical switching element may further include multiple connecting surfaces connecting the incident surface, the exit surface, and the reflecting surface. A step structure exists between the reflecting surface and one of the adjacent connecting surfaces, creating a height difference, Hs, between them, satisfying the condition: 0.005mm ≤ Hs ≤ 0.22mm. This facilitates control of mold surface accuracy and enables automated optical inspection. Specifically, injection marks may be provided on the connecting surfaces to help prevent stray light. Additionally, light-absorbing materials may be provided on the connecting surfaces to reduce light reflection. Furthermore, the step structure can be provided on either the incident or exit surface, and is not limited to the embodiments or examples disclosed herein.

[0125] This disclosure provides an imaging lens module that includes any of the aforementioned plastic optical transition elements.

[0126] This disclosure provides an electronic device that includes the aforementioned imaging lens module.

[0127] <First Implementation Method>

[0128] Please refer to Figure 1A This diagram illustrates an imaging lens module 100 according to a first embodiment of the first embodiment of the present disclosure. Figure 1A As can be seen, the imaging lens module 100 includes, from the object side to the image side, a first lens assembly 101, a plastic optical transition element 110, a second lens assembly 102, a third lens assembly 103, an optical transition element 104, and an imaging surface 105. The first lens assembly 101 includes a lens barrel element 1011 and at least one lens 1012, with the lens 1012 disposed in the lens barrel element 1011 along the first optical axis X1. The second lens assembly 102 includes a lens barrel element 1021 and a plurality of lenses 1022, with the lenses 1022 disposed in the lens barrel element 1021 along the second optical axis X2. The third lens assembly 103 includes a lens barrel element 1031 and at least one lens 1032, with the lens 1032 disposed in the lens barrel element 1031 along the second optical axis X2. The first optical axis X1 is converted into the second optical axis X2 by the plastic optical conversion element 110, and the second optical axis X2 is then converted into the third optical axis X3 by the optical conversion element 104, thereby causing the light rays to be imaged on the imaging surface 105. It should be noted that the optical conversion element 104 may be the same as or different from the plastic optical conversion element 110. The following description will focus on the plastic optical conversion element 110.

[0129] Please refer to the following: Figure 1B , Figure 1C as well as Figure 1D ,in Figure 1B Drawing according to Figure 1AA side view of the plastic optical switching element 110 of the first embodiment of the first implementation. Figure 1C Drawing according to Figure 1B A perspective view of the plastic optical switching element 110. Figure 1D Drawing according to Figure 1B Another perspective view of the plastic optical switching element 110. Figure 1A , Figure 1B , Figure 1C as well as Figure 1D As can be seen, the plastic optical reversing element 110 includes an incident surface 111, a reflecting surface 112, an exiting surface 113, and a reflective film 114. Light enters the plastic optical reversing element 110 through the incident surface 111, that is, it enters the plastic optical reversing element 110 along the first optical axis X1. The reflecting surface 112 is used to change the direction of light travel; that is, the reflecting surface 112 bends the light and makes it travel along the second optical axis X2. The light leaves the plastic optical reversing element 110 through the exiting surface 113. The reflective film 114 is disposed on the reflecting surface 112, with the bottom of the reflective film 114 in solid contact with the reflecting surface 112, and the top and bottom of the reflective film 114 being disposed opposite each other. In addition, the plastic optical reversing element 110 may also include at least one injection mark 116, which is located on a surface of the plastic optical reversing element 110 that is different from the incident surface 111, the reflecting surface 112, and the exiting surface 113.

[0130] Please refer to the following: Figure 1E Its drawing is based on Figure 1B Schematic diagram of reflective film 114. Figure 1E It is known that the reflective film 114 sequentially includes a first multilayer film 1141, a first connecting layer 1142, a first silver atom layer 1143, an insulating layer 1144, a second silver atom layer 1145, a second connecting layer 1146 and a second multilayer film 1147 from the bottom toward the top away from the reflective surface 112.

[0131] Reference Figure 1F Its drawing is based on Figure 1E A schematic diagram of the first multilayer film 1141. (From...) Figure 1E as well as Figure 1FIt is known that the first multilayer film 1141 includes two first low-refractive-index layers 1141a and two first high-refractive-index layers 1141b. The refractive index of the first high-refractive-index layer 1141b is higher than that of the first low-refractive-index layer 1141a, and the first high-refractive-index layer 1141b and the first low-refractive-index layer 1141a are stacked alternately, wherein the first low-refractive-index layer 1141a is directly stacked on the reflective surface 112. The first connecting layer 1142 is directly stacked on the first high-refractive-index layer 1141b of the first multilayer film 1141, and its material includes aluminum oxide. The first silver atom layer 1143 is directly stacked on the first connecting layer 1142, and its material includes silver. The insulating layer 1144 is directly stacked on the first silver atom layer 1143, and its material includes nickel. The second silver atom layer 1145 is made of silver and is located between the insulating layer 1144 and the second multilayer film 1147. It is further away from the reflective surface 112 than the insulating layer 1144, but in solid contact with the insulating layer 1144; that is, the second silver atom layer 1145 is directly stacked on the insulating layer 1144. The second connecting layer 1146 is made of aluminum oxide and is further away from the reflective surface 112 than the second silver atom layer 1145, but in solid contact with the second silver atom layer 1145; that is, the second connecting layer 1146 is directly stacked on the second silver atom layer 1145. Please refer to the reference. Figure 1G Its drawing is based on Figure 1E A schematic diagram of the second multilayer film 1147. (From...) Figure 1E as well as Figure 1G It is known that the second multilayer film 1147 includes two second low refractive index layers 1147a and two second high refractive index layers 1147b. The refractive index of the second high refractive index layer 1147b is higher than that of the second low refractive index layer 1147a. The second high refractive index layer 1147b and the second low refractive index layer 1147a are stacked alternately, wherein the second high refractive index layer 1147b is directly stacked on the second connecting layer 1146.

[0132] In conjunction with reference Figure 1B , Figure 1C as well as Figure 1D It is understood that the plastic optical transition element 110 may further include multiple connecting surfaces 115, which connect the incident surface 111, the exit surface 113, and the reflecting surface 112. The reflecting surface 112 and one of the adjacent connecting surfaces 115 have a step structure 1151, which creates a height difference Hs between the reflecting surface 112 and the connecting surface 115. Figure 1B In the first embodiment of the first implementation, Hs = 0.05 mm.

[0133] In the first embodiment of the first implementation, the materials and thicknesses of each layer of the reflective film 114 are disclosed in Table 1A below.

[0134]

[0135]

[0136] Matching Table 1A, Figure 1E , Figure 1F as well as Figure 1G It can be seen that the number of film layers and the film layer materials of the reflective film 114 are symmetrically arranged with the insulating layer 1144 as the center.

[0137] In the first embodiment of the first implementation, the thickness of the first multilayer film 1141 is Dmf1, the thickness of the insulating layer 1144 is Db, the distance between the first silver atom layer 1143 and the bottom is Hag1, the distance between the second silver atom layer 1145 and the top is Hag2, the average reflectance of the reflective film 114 in the corresponding band of 400nm to 1000nm is measured from the bottom as R1, and the average reflectance of the reflective film 114 in the corresponding band of 400nm to 1000nm is measured from the top as R2. The values ​​of the parameters are disclosed in Table 1B below.

[0138]

[0139] Please refer to the following: Figure 1H , it is Figure 1D The first side 114a of the intermediate reflective film 114 (only indicated on) Figure 1H ) and the second side 114b (only marked on Figure 1H The reflectance is measured by depositing the reflective film 114 onto a flat plastic test piece. The reflectance of the first side 114a is measured by penetrating the plastic test piece from the bottom direction of the reflective film 114, and the reflectance of the second side 114b is measured from the top direction of the reflective film 114.

[0140] Please refer to the following: Figure 1I This illustration depicts a perspective view of a plastic optical transition element 110 according to a second embodiment of the first embodiment of this disclosure. Figure 1I As can be seen, the difference between the plastic optical transition element 110 of the second embodiment of the first embodiment and the plastic optical transition element 110 of the first embodiment is that both the incident surface 111 and the exit surface 113 of the plastic optical transition element 110 of the second embodiment of the first embodiment have curvature. The remaining components and configurations of the plastic optical transition element 110 of the second embodiment of the first embodiment are the same as or similar to those of the plastic optical transition element 110 of the first embodiment of the first embodiment, and will not be described again here.

[0141] <Second Implementation Method>

[0142] Please refer to Figure 2A This diagram illustrates an imaging lens module 200 according to a first embodiment of the second embodiment of this disclosure. Figure 2A As can be seen, the imaging lens module 200 sequentially includes a first lens assembly 201, a second lens assembly 202, a plastic optical reversing element 210, and an imaging surface 205 from the object side to the image side. The first lens assembly 201 includes a lens barrel element 2011 and multiple lenses 2012, with the lenses 2012 disposed within the lens barrel element 2011 along the first optical axis X1. The second lens assembly 202 includes a lens barrel element 2021 and multiple lenses 2022, with the lenses 2022 disposed within the lens barrel element 2021 along the first optical axis X1. The second lens assembly 202 is located on the image side of the first lens assembly 201 along the first optical axis X1. The first optical axis X1 is reversed into a second optical axis X2 by the plastic optical reversing element 210, and then further reversed into a third optical axis X3, thereby causing light to be imaged onto the imaging surface 205. In addition, the plastic optical transition element 210 is positioned by the housing 2062 and connected to the second lens assembly 202 by the housing 2061. The imaging surface 205 is disposed on the base 207, which is connected to the housing 2061.

[0143] Please refer to the following: Figure 2B as well as Figure 2C ,in Figure 2B Drawing according to Figure 2A A side view of the plastic optical switching element 210 of the first embodiment of the second embodiment. Figure 2C Drawing according to Figure 2B A perspective view of the plastic optical switching element 210. Figure 2A , Figure 2B as well as Figure 2C As can be seen, the plastic optical reversing element 210 includes an incident surface 211, two reflecting surfaces 212, an exiting surface 213, and two reflecting films 214. Light enters the plastic optical reversing element 210 through the incident surface 211, that is, it enters the plastic optical reversing element 210 along the first optical axis X1. The reflecting surface 212 is used to change the direction of light travel; that is, the reflecting surface 212 bends the light so that it travels along the second optical axis X2 and the third optical axis X3. The light leaves the plastic optical reversing element 210 through the exiting surface 213. The reflecting film 214 is disposed on the reflecting surface 212, with the bottom of the reflecting film 214 in solid contact with the reflecting surface 212, and the top and bottom of the reflecting film 214 being disposed opposite each other. It should be noted that the incident surface 211 and the exit surface 213 of the plastic optical reversing element 210 are located on the same side, and there is a total reflection surface (not otherwise labeled) between the incident surface 211 and the exit surface 213. Therefore, the second optical axis X2 will be reversed once by the total reflection surface before it is reversed to the third optical axis X3 by the reflection surface 212.

[0144] Please refer to the following: Figure 2D Its drawing is based on Figure 2B Schematic diagram of reflective film 214. Figure 2DIt can be seen that the reflective film 214 sequentially includes a first multilayer film 2141, a first connecting layer 2142, a first silver atom layer 2143, an insulating layer 2144, a second silver atom layer 2145, a second connecting layer 2146 and a second multilayer film 2147 from the bottom toward the top away from the reflective surface.

[0145] Reference Figure 2E Its drawing is based on Figure 2D A schematic diagram of the first multilayer film 2141. (From...) Figure 2D as well as Figure 2E It is known that the first multilayer film 2141 includes two first low-refractive-index layers 2141a and two first high-refractive-index layers 2141b. The refractive index of the first high-refractive-index layer 2141b is higher than that of the first low-refractive-index layer 2141a, and the first high-refractive-index layer 2141b and the first low-refractive-index layer 2141a are stacked alternately, wherein the first low-refractive-index layer 2141a is directly stacked on the reflective surface 212. The first connecting layer 2142 is directly stacked on the first high-refractive-index layer 2141b of the first multilayer film 2141, and its material includes aluminum oxide. The first silver atom layer 2143 is directly stacked on the first connecting layer 2142, and its material includes silver. The insulating layer 2144 is directly stacked on the first silver atom layer 2143, and its material includes nickel. The second silver atom layer 2145 is made of silver and is located between the insulating layer 2144 and the second multilayer film 2147. It is further away from the reflective surface 212 than the insulating layer 2144, but in solid contact with the insulating layer 2144; that is, the second silver atom layer 2145 is directly stacked on the insulating layer 2144. The second connecting layer 2146 is made of aluminum oxide and is further away from the reflective surface 212 than the second silver atom layer 2145, but in solid contact with the second silver atom layer 2145; that is, the second connecting layer 2146 is directly stacked on the second silver atom layer 2145. Please refer to the reference. Figure 2F Its drawing is based on Figure 2D A schematic diagram of the second multilayer film 2147. (From...) Figure 2D as well as Figure 2F It is known that the second multilayer film 2147 includes two second low refractive index layers 2147a and a second high refractive index layer 2147b. The refractive index of the second high refractive index layer 2147b is higher than that of the second low refractive index layer 2147a. The second high refractive index layer 2147b and the second low refractive index layer 2147a are stacked alternately, wherein the second low refractive index layer 2147a is directly stacked on the second connecting layer 2146.

[0146] In conjunction with reference Figure 2B as well as Figure 2CIt is understood that the plastic optical transition element 210 may further include multiple connecting surfaces 215, which connect the incident surface 211, the exit surface 213, and the reflecting surface 212. The reflecting surface 212 and one of the adjacent connecting surfaces 215 have a step structure 2151, which creates a height difference Hs between the reflecting surface 212 and the connecting surface 215. Figure 2B In the first embodiment of the second implementation, Hs = 0.03 mm. Additionally, Figure 2B In the first embodiment of the second implementation, the step structure 2151 creates a height difference Hs' between the exit surface 213 and the connecting surface 215, where Hs' = 0.01 mm.

[0147] In the first embodiment of the second implementation, the materials and thicknesses of each layer of the reflective film 214 are disclosed in Table 2A below.

[0148]

[0149]

[0150] In the first embodiment of the second implementation, the thickness of the first multilayer film 2141 is Dmf1, the thickness of the insulating layer 2144 is Db, the distance between the first silver atom layer 2143 and the bottom is Hag1, the distance between the second silver atom layer 2145 and the top is Hag2, the average reflectivity of the reflective film 214 in the corresponding band of 400nm to 1000nm is measured from the bottom as R1, and the average reflectivity of the reflective film 214 in the corresponding band of 400nm to 1000nm is measured from the top as R2. The values ​​of these parameters are disclosed in Table 2B below.

[0151]

[0152] Please refer to the following: Figure 2G , it is Figure 2C The first side 214a of the intermediate reflective film 214 (only indicated on) Figure 2G ) and the second side 214b (only marked on Figure 2G The reflectance is measured by depositing the reflective film 214 onto a flat plastic test piece. The reflectance of the first side 214a is measured by penetrating the plastic test piece from the bottom direction of the reflective film 214, and the reflectance of the second side 214b is measured from the top direction of the reflective film 214.

[0153] <Third Implementation Method>

[0154] Please refer to Figure 3A This diagram illustrates an imaging lens module 300 according to a first embodiment of the third embodiment of this disclosure. Figure 3AAs can be seen, the imaging lens module 300 includes, from the object side to the image side along the first optical axis X1, a plastic optical reversing element 310, multiple lenses 3012, and an imaging surface 305. The optical reversing element 310 and lenses 3012 are sequentially disposed on the lens barrel element 3011 from the object side to the image side, and the imaging surface 305 is disposed on the image side of the lenses 3012 and the lens barrel element 3011. After light enters the plastic optical reversing element 310 along the first optical axis X1, it is reversed and then enters the lens 3012 along the first optical axis X1, and is imaged on the imaging surface 305.

[0155] Please refer to the following: Figure 3B as well as Figure 3C ,in Figure 3B Drawing according to Figure 3A A side view of the plastic optical switching element 310 of the first embodiment of the third embodiment. Figure 3C Drawing according to Figure 3B A perspective view of the plastic optical switching element 310. Figure 3A , Figure 3B as well as Figure 3C As can be seen, the plastic optical reversing element 310 includes an incident surface 311, three reflecting surfaces 3121, 3122, and 3123, an exiting surface 313, and three reflecting films 3141, 3142, and 3143. The reflecting surface 3121 is located on the same side as the incident surface 311, and the reflecting surfaces 3122 and 3123 are located on the same side as the exiting surface 313. Light enters the plastic optical reversing element 310 through the incident surface 311, that is, along the first optical axis X1. The reflecting surfaces 3121, 3122, and 3123 are used to change the direction of light travel; in other words, the reflecting surfaces 3121, 3122, and 3123 deflect the light. Light rays exit the plastic optical reversing element 310 via the exit surface 313. After the reflective surfaces 3121, 3122, and 3123 deflect the light rays, the light rays still exit the plastic optical reversing element 310 via the exit surface 313 along the first optical axis X1 and enter the lens 3012. Reflective films 3141, 3142, and 3143 are respectively disposed on the reflective surfaces 3121, 3122, and 3123. The bottom of each reflective film 3141, 3142, and 3143 is in solid contact with the respective reflective surfaces 3121, 3122, and 3123, and the top and bottom of the reflective films 3141, 3142, and 3143 are disposed opposite each other.

[0156] Please refer to the following: Figure 3D Its drawing is based on Figure 3B Schematic diagram of reflective film 3141. Figure 3DIt can be seen that the reflective film 3141 sequentially includes a first multilayer film 31411, a first connecting layer 31412, a first silver atom layer 31413, an insulating layer 31414, and a second multilayer film 31417 from the bottom toward the top away from the reflective surface 3121.

[0157] Reference Figure 3E Its drawing is based on Figure 3D A schematic diagram of the first multilayer film 31411. (From...) Figure 3D as well as Figure 3E As can be seen, the first multilayer film 31411 includes two first low-refractive-index layers 31411a and two first high-refractive-index layers 31411b. The refractive index of the first high-refractive-index layer 31411b is higher than that of the first low-refractive-index layer 31411a, and the first high-refractive-index layers 31411b and the first low-refractive-index layers 31411a are stacked alternately, wherein the first low-refractive-index layers 31411a are directly stacked on the reflective surface 3121. The first connecting layer 31412 is directly stacked on the first high-refractive-index layer 31411b of the first multilayer film 31411, and its material includes aluminum oxide. The first silver atom layer 31413 is directly stacked on the first connecting layer 31412, and its material includes silver. The insulating layer 31414 is directly stacked on the first silver atom layer 31413, and its material includes nickel. Please refer to the reference. Figure 3F Its drawing is based on Figure 3D A schematic diagram of the second multilayer film 31417. (From...) Figure 3D as well as Figure 3F It is known that the second multilayer film 31417 includes a second low refractive index layer 31417a and a second high refractive index layer 31417b. The refractive index of the second high refractive index layer 31417b is higher than that of the second low refractive index layer 31417a. The second high refractive index layer 31417b and the second low refractive index layer 31417a are stacked alternately, wherein the second low refractive index layer 31417a is directly stacked on the insulating layer 31414.

[0158] It must be noted that in the first embodiment of the third implementation, the structure, material, and arrangement relationship of the other two reflective films 3142 and 3143 with the corresponding reflective surfaces 3122 and 3123 may be the same as or similar to the aforementioned reflective film 3141 and its corresponding reflective surface 3121, and will not be described again here.

[0159] In conjunction with reference Figure 3CIt is understood that the plastic optical transition element 310 may further include multiple connecting surfaces 315, which connect the incident surface 311 and the reflecting surfaces 3122 and 3123. The reflecting surfaces 3122 and 3123 have a step difference structure (not otherwise labeled) with the adjacent connecting surfaces 315, creating a height difference between the reflecting surfaces 3122 and 3123 and the connecting surfaces 315. Additionally, the incident surface 311 also has a step difference structure with the adjacent connecting surfaces 315.

[0160] The parameters and materials of the first embodiment of the third embodiment disclosed herein are the same as or similar to those of the first embodiment of the first embodiment or the first embodiment of the second embodiment, and will not be repeated here.

[0161] <Fourth Implementation Method>

[0162] Please refer to Figure 4A and Figure 4B ,in Figure 4A A schematic diagram of the electronic device 40 according to the fourth embodiment of this disclosure is shown. Figure 4B Drawing according to Figure 4A Another schematic diagram of the electronic device 40 in the fourth embodiment. Figure 4A and Figure 4B As can be seen, the electronic device 40 is a smartphone, which includes multiple camera modules and a user interface 46. Each camera module may include the imaging lens module disclosed in any embodiment of the first to third embodiments, but this disclosure is not limited thereto. Furthermore, the camera modules are a high-pixel camera module 41, an ultra-wide-angle camera module 42, and dual telephoto camera modules 43 and 44, and the user interface 46 is a touch screen, but this is not a limitation.

[0163] The user enters the shooting mode through the user interface 46, which displays the screen and allows manual adjustment of the shooting angle to switch between different camera modules. At this time, the camera module focuses the imaging light onto the electronic image sensor and outputs electronic signals related to the image to the image signal processor (ISP) 45.

[0164] Depend on Figure 4AAs can be seen, depending on the camera specifications of the electronic device 40, the electronic device 40 may also include an optical image stabilization component (not shown in the figure). Furthermore, the electronic device 40 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, 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 camera module of the electronic device 40, so as to obtain good image quality and help the electronic device 40 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 (4K Resolution) video recording. In addition, users can directly view the camera's shooting screen through the user interface 46 and manually operate the framing range on the user interface 46 to achieve the WYSIWYG autofocus function.

[0165] Furthermore, the camera module, 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 45 and other related components via a connector (not shown) to execute the shooting process. Current electronic devices, such as smartphones, tend to be thinner and lighter. By mounting the camera 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 space of the electronic device can be met, providing greater flexibility. This also allows for more flexible control of the camera module's autofocus function through the electronic device's touchscreen. In the fourth embodiment, the electronic device 40 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 45 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.

[0166] Furthermore, the electronic device 40 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.

[0167] Figure 4C Drawing according to Figure 4A A schematic diagram of an image captured by the electronic device 40 in the fourth embodiment. Figure 4C It can be seen that the ultra-wide-angle camera module 42 can capture images of a larger range and has the function of capturing more scenery.

[0168] Figure 4D Drawing according to Figure 4A A schematic diagram of another image captured by the electronic device 40 in the fourth embodiment. Figure 4D It can be seen that the high-pixel camera module 41 can capture images within a certain range and also has high pixel count, with high resolution and low distortion.

[0169] Figure 4E Drawing according to Figure 4A A schematic diagram of another image captured by the electronic device 40 in the fourth embodiment. Figure 4E It can be seen that the telephoto camera modules 43 and 44 have high magnification functions, which can capture distant images and magnify them to a high degree.

[0170] Depend on Figures 4C to 4E It is understood that by using camera modules with different focal lengths for framing and combining them with image processing technology, the electronic device 40 can achieve the function of zooming.

[0171] <Fifth Implementation>

[0172] Please refer to Figure 5 The diagram illustrates the electronic device 50 according to the fifth embodiment of this disclosure. Figure 5 It is understood that the electronic device 50 is a smartphone, and the electronic device 50 includes multiple camera modules, wherein each camera module may include the imaging lens module disclosed in any embodiment of any of the first to third embodiments described above, but the present disclosure is not limited thereto. Furthermore, the camera modules are ultra-wide-angle camera modules 51, 52, wide-angle camera modules 53, 54, telephoto camera modules 55, 56, 57, 58, and a TOF module (Time-Of-Flight) 59, and the TOF module 59 may also be other types of camera modules, and is not limited to this configuration. Moreover, the telephoto camera modules 57 and 58 further have the function of reversing the optical path, but the present disclosure is not limited thereto.

[0173] Depending on the camera specifications of the electronic device 50, the electronic device 50 may also include an optical image stabilization component (not shown). Furthermore, the electronic device 50 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 501, 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 camera module of the electronic device 50, resulting in good image quality. This helps the electronic device 50 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.

[0174] Furthermore, the structure and arrangement of the remaining components in the fifth embodiment are the same as those in the fourth embodiment, and will not be described again here.

[0175] 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 appended claims.

Claims

1. A plastic optical turning element, characterized by, The plastic optical turning element comprises: an incident surface through which a light ray enters the plastic optical turning element; at least one reflective surface for changing a traveling direction of the light ray; an exit surface through which the light ray exits the plastic optical turning element; and a reflective film disposed on the at least one reflective surface, a bottom of the reflective film being in physical contact with the at least one reflective surface, and a top of the reflective film being disposed opposite to the bottom, the reflective film sequentially comprising, from the bottom to the top: a first multilayer film comprising at least one first low-refractive-index layer and at least one first high-refractive-index layer, the at least one first high-refractive-index layer having a higher refractive index than the at least one first low-refractive-index layer, and the at least one first high-refractive-index layer and the at least one first low-refractive-index layer being alternately stacked; a first connecting layer comprising aluminum oxide; a first silver atom layer comprising silver; an isolation layer comprising at least one of nickel, titanium, vanadium, chromium, nickel oxide, titanium oxide, vanadium oxide, and chromium oxide; and a second multilayer film comprising at least one second low-refractive-index layer and at least one second high-refractive-index layer, the at least one second high-refractive-index layer having a higher refractive index than the at least one second low-refractive-index layer, and the at least one second high-refractive-index layer and the at least one second low-refractive-index layer being alternately stacked; wherein a thickness of the first multilayer film is Dmf1, a thickness of the isolation layer is Db, and a distance between the first silver atom layer and the bottom is Hag1, satisfying the following conditions: 70 nm < Dmf1 < 420 nm; 20 nm < Db < 180 nm; and 90 nm < Hag1 < 550 nm.

2. The plastic optical turning element of claim 1, wherein The reflective film further comprises: a second silver atom layer comprising silver, which is located between the isolation layer and the second multilayer film, is farther away from the at least one reflective surface than the isolation layer, and is in physical contact with the isolation layer; and a second connecting layer comprising aluminum oxide, which is farther away from the at least one reflective surface than the second silver atom layer, and is in physical contact with the second silver atom layer.

3. The plastic optical turning element of claim 2, wherein The number of film layers of the reflective film and the material of the film layers of the reflective film are symmetrically arranged around the isolation layer.

4. The plastic optical turning element of claim 2, wherein At least one of the incident surface, the exit surface, and the at least one reflective surface has a curvature.

5. The plastic optical turning element of claim 2, wherein The number of the at least one reflective surface is at least two.

6. The plastic optical turning element of claim 2, wherein A distance between the second silver atom layer and the top is Hag2, satisfying the following condition: 60 nm < Hag2 < 480 nm.

7. The plastic optical turning element of claim 1, wherein A distance between the first silver atom layer and the bottom is Hag1, satisfying the following condition: 180 nm < Hag1 < 460 nm.

8. The plastic optical turning element of claim 1, wherein A thickness of the isolation layer is Db, satisfying the following condition: 35 nm < Db < 120 nm.

9. The plastic optical turning element of claim 1, wherein An average reflectivity of the reflective film corresponding to a waveband of 400 nm to 1000 nm is measured from the bottom, the average reflectivity being R1, satisfying the following condition: 85％<R1<100％。 10. The plastic optical turning element of claim 1, wherein An average reflectivity of the reflective film corresponding to a waveband of 400 nm to 1000 nm is measured from the top, the average reflectivity being R2, satisfying the following condition: 95％<R2<100％。 11. The plastic optical turning element of claim 1, wherein The material of the isolation layer is mainly nickel.

12. The plastic optical turning element of claim 1, wherein Further comprising: a plurality of connecting surfaces connecting the incident surface, the exit surface, and the at least one reflecting surface, wherein the at least one reflecting surface has a step structure with a neighboring one of the plurality of connecting surfaces, the step structure forms a height difference between the at least one reflecting surface and the connecting surface, the height difference is Hs, and the height difference satisfies the following condition: 0.005 mm ≤ Hs ≤ 0.22 mm.

13. A plastic optical turning element, characterized by, comprises: an incident surface through which a light ray enters the plastic optical turning element; at least one reflecting surface for changing a traveling direction of the light ray; an exit surface through which the light ray exits the plastic optical turning element; and a reflective film disposed on the at least one reflecting surface, a bottom of the reflective film is in physical contact with the at least one reflecting surface, a top of the reflective film is disposed opposite to the bottom, the reflective film sequentially comprises, from the bottom to the top that is away from the at least one reflecting surface: a first multilayer film comprising at least one first low refractive index layer and at least one first high refractive index layer, a refractive index of the at least one first high refractive index layer is higher than a refractive index of the at least one first low refractive index layer, and the at least one first high refractive index layer and the at least one first low refractive index layer are alternately stacked; a first connecting layer comprising aluminum oxide; a first silver atom layer comprising silver; and an isolation layer comprising at least one of nickel, titanium, vanadium, chromium, nickel oxide, titanium oxide, vanadium oxide, and chromium oxide; wherein a thickness of the first multilayer film is Dmf1, a thickness of the isolation layer is Db, a distance between the first silver atom layer and the at least one reflecting surface is Hag1, and the thickness of the first multilayer film, the thickness of the isolation layer, and the distance between the first silver atom layer and the at least one reflecting surface satisfy the following conditions: 0.1 < Db / Dmf1 < 0.9; 70 nm < Dmf1 < 420 nm; and 90 nm < Hag1 < 550 nm.

14. The plastic optical turning element of claim 13, wherein the plastic optical turning element is a plastic prism. the reflective film further comprises: a second silver atom layer comprising silver, which is away from the at least one reflecting surface compared to the isolation layer and is in physical contact with the isolation layer.

15. The plastic optical turning element of claim 14, wherein the plastic optical turning element is a plastic prism. at least one of the incident surface, the exit surface, and the at least one reflecting surface has a curvature.

16. The plastic optical turning element of claim 14, wherein a number of the at least one reflecting surface is at least two.

17. The plastic optical turning element of claim 13, wherein a distance between the first silver atom layer and the bottom is Hag1, and Hag1 satisfies the following condition: 180 nm < Hag1 < 460 nm.

18. The plastic optical turning element of claim 13, wherein, a thickness of the isolation layer is Db, and Db satisfies the following condition: 35 nm < Db < 120 nm.

19. The plastic optical turning element of claim 18, wherein a thickness of the first multilayer film is Dmf1, a thickness of the isolation layer is Db, and Db / Dmf1 satisfies the following condition: 0.1 < Db / Dmf1 < 0.

4.

20. The plastic optical turning element of claim 13, wherein an average reflectivity of the reflective film corresponding to a waveband of 400 nm to 1000 nm is measured from the bottom, the average reflectivity is R1, and R1 satisfies the following condition: 85％<R1<100％。 21. The plastic optical turning element of claim 14, wherein an average reflectivity of the reflective film corresponding to a waveband of 400 nm to 1000 nm is measured from the top, the average reflectivity is R2, and R2 satisfies the following condition: 95％<R2<100％。 22. The plastic optical turning element of claim 13, wherein a material of the isolation layer is mainly nickel.

23. The plastic optical turning element of claim 13, wherein further comprises: a plurality of connecting surfaces connecting the incident surface, the exit surface and the at least one reflecting surface, wherein the at least one reflecting surface has a step structure with an adjacent one of the plurality of connecting surfaces, the step structure forms a height difference between the at least one reflecting surface and the connecting surface, the height difference is Hs, which satisfies the following condition: 0.005mm ≤ Hs ≤ 0.22mm.

24. An imaging lens module characterized by comprising: comprising: The plastic optical turning element of claim 1 or 13.

25. An electronic device, comprising: comprising: The imaging lens module of claim 24.

Images