Optical lens and terminal device

Abstract

The utility model relates to the technical field of lenses, in particular to an optical lens and terminal equipment. The first optical film is arranged on the object side of the lens assembly, and the first optical film is configured to be an anti-reflection film; the second optical film is arranged between the image side of the first optical film and the object side of the lens assembly or arranged on the object side of the first optical film, and the second optical film is configured to be a blue light cut-off film; the third optical film is arranged on the image side of the lens assembly, and the third optical film is configured to be a red light cut-off film; and the imaging surface is arranged on the image side of the third optical film and is used for receiving the light passing through the first optical film, the second optical film, the lens assembly and the third optical film for imaging. According to the optical lens, the influence of blue light and infrared light on imaging of the optical lens can be eliminated, and the imaging effect of the optical lens is improved.

Description

Technical Field

[0001] This application relates to the field of lens technology, specifically to an optical lens and terminal device. Background Technology

[0002] With the continuous development of terminal devices, more and more terminal devices are equipped with optical lenses, enabling them to perform video recording. However, when terminal devices use optical lenses to photograph point light sources, the presence of blue light, infrared light, and other specks in the light source can cause point stray light to appear during imaging, thus affecting the imaging effect of the optical lens. Utility Model Content

[0003] In view of the above, it is necessary to provide an optical lens and terminal device to eliminate the influence of blue light and infrared light on the imaging of the optical lens and improve the imaging effect of the optical lens.

[0004] This application provides an optical lens, comprising, along the optical axis:

[0005] Lens assembly;

[0006] A first optical film is disposed on the object side of the lens assembly, and the first optical film is configured as an anti-reflective film;

[0007] A second optical film is disposed between the image side of the first optical film and the object side of the lens assembly, or disposed on the object side of the first optical film, wherein the second optical film is configured as a blue light cutoff film.

[0008] A third optical film is disposed on the image side of the lens assembly, and the third optical film is configured as a red light cutoff film;

[0009] An imaging surface is disposed on the image side of the third optical film and is used to receive light passing through the first optical film, the second optical film, the lens assembly and the third optical film for imaging.

[0010] The aforementioned optical lens, by setting an anti-reflective coating on the object side of the lens assembly, reduces the reflectivity and reflection of light, increases the amount of light entering the lens assembly, and ensures the amount of light entering the optical lens, which is beneficial to improving the imaging effect of the optical lens. The optical lens is suitable for shooting low-light scenes such as at night, expanding the application range and imaging effect of the optical lens. By setting blue light cut-off films and red light cut-off films on the object side and image side of the lens assembly respectively, the blue light cut-off film filters out blue light in the light before it enters the lens assembly, eliminating the influence of blue light on the imaging of the optical lens and improving the imaging effect of the optical lens. The red light cut-off film further filters out infrared light in the light passing through the lens assembly, thereby further ensuring the imaging effect of the optical lens.

[0011] In one embodiment, the optical lens further includes a cover plate along the optical axis, the cover plate being disposed on the object side of the lens assembly, the first optical film and the second optical film being disposed on the object side and the image side of the cover plate, respectively, or the first optical film and the second optical film being disposed on the image side and the object side of the cover plate, respectively.

[0012] The aforementioned optical lens, by setting the cover plate, enables the setting of the first optical film and the second optical film, and the cover plate can protect and seal the lens assembly, ensuring the cleanliness of the lens assembly, thereby ensuring the imaging effect of the optical lens.

[0013] In one embodiment, the optical lens further includes a cover plate along the optical axis, the cover plate being disposed on the object side of the lens assembly, the first optical film being disposed on the object side or image side of the cover plate, and the second optical film being disposed on the object side or image side of the cover plate.

[0014] The aforementioned optical lens, by setting the cover plate, enables the setting of the first optical film and the second optical film, and the cover plate can protect and seal the lens assembly, ensuring the cleanliness of the lens assembly, thereby ensuring the imaging effect of the optical lens.

[0015] In one embodiment, the optical lens further includes a cover plate along the optical axis, the cover plate being disposed on the object side of the lens assembly, the first optical diaphragm being disposed on the object side or image side of the cover plate, and the second optical diaphragm being disposed on the object side or image side of the cover plate.

[0016] The aforementioned optical lens, by setting the cover plate, enables the setting of the first optical film and the second optical film, and the cover plate can protect and seal the lens assembly, ensuring the cleanliness of the lens assembly, thereby ensuring the imaging effect of the optical lens.

[0017] In one embodiment, the optical lens further includes a cover plate along the optical axis, and the lens assembly includes at least a first lens along the optical axis. The first optical diaphragm is disposed on the object side of the first lens, and the second optical diaphragm is disposed on the object side or image side of the cover plate.

[0018] The aforementioned optical lens, by setting the cover plate, enables the setting of the first optical film and the second optical film, and the cover plate can protect and seal the lens assembly, ensuring the cleanliness of the lens assembly, thereby ensuring the imaging effect of the optical lens.

[0019] In one embodiment, the first lens is made of glass or plastic. The aforementioned optical lens, by limiting the material of the first lens, ensures the optical transmission effect of the lens assembly.

[0020] In one embodiment, the cover plate is made of glass or plastic. The optical lens described above, by limiting the material of the cover plate, ensures the light transmission effect of the cover plate.

[0021] In one embodiment, the optical lens further includes a substrate along the optical axis, the substrate being disposed between the image side of the lens assembly and the object side of the imaging surface, and the third optical film being disposed on the object side or the image side of the substrate.

[0022] The aforementioned optical lens, by setting the aforementioned substrate, enables the setting of the third optical film, and the substrate can play a protective and sealing role for the imaging surface, ensuring the cleanliness of the imaging surface, thereby ensuring the imaging effect of the optical lens.

[0023] In one embodiment, the optical lens further includes a photosensitive chip along the optical axis. The photosensitive chip is disposed on the image side of the third optical film, and the imaging surface is disposed on the object side of the photosensitive chip. The optical lens described above achieves the setting of the imaging surface by providing the aforementioned photosensitive chip.

[0024] This application also provides a terminal device, including an optical lens as described in any of the above technical solutions.

[0025] In the aforementioned terminal device, the optical lens incorporates an anti-reflective coating on the object side of the lens assembly. This reduces light reflectivity and reflection, increasing the amount of light entering the lens assembly and ensuring sufficient light intake. This improves the imaging performance of the optical lens, making it suitable for shooting in low-light conditions such as at night, thus expanding its application scenarios and imaging capabilities. Furthermore, by placing blue light cut-off films on the object side and red light cut-off films on the image side of the lens assembly, blue light is filtered out before entering the lens assembly, eliminating its impact on the lens's imaging performance and improving the overall image quality. The red light cut-off film further filters out infrared light passing through the lens assembly, further ensuring the terminal device's imaging performance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the optical lens provided in the first embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the optical lens provided in the second embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the structure of the optical lens provided in the third embodiment of this application.

[0029] Figure 4 This is a schematic diagram of the structure of the terminal device provided in the fourth embodiment of this application.

[0030] Explanation of key component symbols: optical lenses 100, 200, 300, lens assembly 10, first lens 11, first optical film 20, second optical film 30, third optical film 40, imaging surface 50, cover plate 60, first cover plate 60a, second cover plate 60b, substrate 70, photosensitive chip 80, terminal device 400. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0035] Please see Figure 1The first embodiment of this application provides an optical lens 100. The optical lens 100 includes a lens assembly 10, a first optical diaphragm 20, a second optical diaphragm 30, a third optical diaphragm 40, and an imaging surface 50 along the optical axis O. The lens assembly 10 includes at least a first lens 11, which has an object-side surface s1. The material of the first lens 11 can be glass or plastic. The first optical diaphragm 20 is disposed on the object-side surface of the lens assembly 10 (which can be understood as...). Figure 1 As shown on the left), the first optical film 20 is configured as an anti-reflective film (AR film). The anti-reflective film is used to reduce light reflection and increase the amount of transmitted light in the lens assembly 10, thereby improving the efficiency and performance of the lens assembly 10. The second optical film 30 is disposed on the image side of the first optical film 20 (which can be understood as...). Figure 1 The second optical film 30 is disposed between the object side of the lens assembly 10 (shown on the right side) and the first optical film 20. The second optical film 30 is configured as a blue light cutoff film, used to reduce or block the transmission of blue light within a specific wavelength range through the lens assembly 10. The blue light cutoff film typically contains perovskite quantum dots and a matrix, with a center wavelength between 400 and 480 nm, effectively blocking or reducing the transmission of blue light. The blue light cutoff film possesses high transparency and strong ultraviolet and blue light shielding capabilities. For example, a composite material containing 0.3 wt% ZnO can almost completely block ultraviolet light between 200 and 400 nm and more than 80% of blue light between 400 and 450 nm. The third optical film 40 is disposed on the image side of the lens assembly 10. The third optical film 40 is configured as a red light cutoff film, also known as an infrared cutoff filter (IR-Cutfilter). The red light cutoff film is used to filter out unnecessary infrared light from the light emitted through the lens assembly 10, thereby reducing interference with image quality. The imaging surface 50 is disposed on the image side of the third optical film 40. The imaging surface 50 is used to receive light passing through the first optical film 20, the second optical film 30, the lens assembly 10 and the third optical film 40 for imaging.

[0036] Thus, the optical lens 100 provided in this application embodiment reduces the reflectivity and reflection of light by providing an anti-reflection film on the object side of the lens assembly 10, thereby increasing the amount of light entering the lens assembly 10 and ensuring the amount of light entering the optical lens 100. This is beneficial to improving the imaging effect of the optical lens 100, making the optical lens 100 suitable for shooting low-light scenes such as at night, thus improving the usage scenarios and imaging effect of the optical lens 100. By providing a blue light cutoff film and a red light cutoff film on the object side and image side of the lens assembly 10, respectively, the blue light in the light is filtered out by the blue light cutoff film before the light enters the lens assembly 10, eliminating the influence of blue light on the imaging of the optical lens 100 and improving the imaging effect of the optical lens 100. The infrared light in the light passing through the lens assembly 10 is further filtered out by the red light cutoff film, thereby further ensuring the imaging effect of the optical lens 100.

[0037] In this embodiment, the optical lens 100 also includes a cover plate 60 along the optical axis O. The cover plate 60 is disposed on the object side of the lens assembly 10. The cover plate 60 can be made of glass or plastic and has high light transmittance. In this embodiment, the cover plate 60 can be made of high-transmittance white glass. The first optical film 20 and the second optical film 30 are respectively disposed on the object side a1 and the image side a2 of the cover plate 60, that is, light passes through the first optical film 20 first and then through the second optical film 30. The first optical film 20 and the second optical film 30 can be disposed on the object side a1 and the image side a2 of the cover plate 60 by means of plating, laser engraving, adhesive bonding, etc. In this way, by setting the cover plate 60, the first optical film 20 and the second optical film 30 are supported and disposed, and the cover plate 60 can also protect and seal the lens assembly 10, preventing external impurities from contaminating the lens assembly 10, ensuring the cleanliness of the lens assembly 10, and thus ensuring the imaging effect of the optical lens 100.

[0038] Understandably, in other embodiments, the positions of the first optical film 20 and the second optical film 30 can be interchanged, that is, the first optical film 20 and the second optical film 30 are respectively disposed on the image side a2 and the object side a1 of the cover plate 60, and the light passes through the second optical film 30 first and then through the first optical film 20.

[0039] Understandably, in other embodiments, the first optical film 20 may be disposed on the object side a1 or the image side a2 of the cover plate 60, and the second optical film 30 may be disposed on the object side or the image side of the cover plate 60; or, the second optical film 30 may be disposed on the object side a1 or the image side a2 of the cover plate 60, and the first optical film 20 may be disposed on the object side or the image side of the cover plate 60.

[0040] In this embodiment, the optical lens 100 further includes a substrate 70 along the optical axis O. The substrate 70 can be made of glass or plastic and has high light transmittance. The substrate 70 is disposed between the image side of the lens assembly 10 and the object side of the imaging surface 50, and a third optical film 40 is disposed on the object side b1 of the substrate 70. The third optical film 40 and the substrate 70 can be understood as infrared cut-off filters. Thus, by setting the substrate 70, the third optical film 40 is supported and disposed, and the substrate 70 also protects and seals the imaging surface 50, ensuring the cleanliness of the imaging surface 50 and thereby guaranteeing the imaging effect of the optical lens 100.

[0041] Understandably, in other embodiments, the third optical film 40 may also be disposed on the image side b2 of the substrate 70.

[0042] In this embodiment, the optical lens 100 further includes a photosensitive chip 80 along the optical axis O. The photosensitive chip 80 is disposed on the image side of the third optical film 40, and the imaging surface 50 is disposed on the object side c1 of the photosensitive chip 80. The imaging surface 50 can also be understood as the object side c1 of the photosensitive chip 80. Thus, by setting the aforementioned photosensitive chip 80, the imaging surface 50 is configured.

[0043] When the optical lens 100 of this embodiment is used for imaging, light passes sequentially through the first optical film 20, the object side a1 of the cover plate 60, the image side a2 of the cover plate 60, and the second optical film 30, and enters the object side s1 of the first lens 11 of the lens assembly 10. After exiting the lens assembly 10, the light passes sequentially through the third optical film 40, the object side b1 of the substrate 70, and the image side b2 of the substrate 70, and enters the imaging surface 50 of the object side c1 of the photosensitive chip 80, so as to realize the imaging of the optical lens 100.

[0044] Please see Figure 2This application provides a second embodiment of an optical lens 200. The optical lens 200 provided in this embodiment is structurally similar to the optical lens 100 provided in the first embodiment, except that in this embodiment, the lens assembly 10 includes at least a first lens 11 along the optical axis O, a first optical film 20 is disposed on the object-side surface s1 of the first lens 11, a second optical film 30 is disposed on the object-side surface a1 of the cover plate 60, and a third optical film 40 is disposed on the image-side surface b2 of the substrate 70. The lens assembly 10 may also include more lenses, which will not be described in detail in this embodiment. Thus, by disposing of the first optical film 20 on the object-side surface s1 of the first lens 11, light first passes through the second optical film 30, then through the first optical film 20, and enters the lens assembly 10. The first optical film 20 can reduce the reflectivity of the optical lens 100, which is beneficial for eliminating ghosting in the image. Furthermore, by directly disposing of the first optical film 20 on the first lens 11, it is beneficial to further improve the reflectivity of the first optical film 20.

[0045] When the optical lens 200 of this embodiment is used for imaging, light passes sequentially through the second optical film 30, the object side a1 of the cover plate 60, the image side a2 of the cover plate 60, the first optical film 20, the object side a1 of the first lens 11 of the lens assembly 10, and exits through the lens assembly 10. Then, it sequentially enters the object side b1 of the substrate 70, the image side b2 of the substrate 70, the third optical film 40, and enters the imaging surface 50 of the object side c1 of the photosensitive chip 80, so as to realize the imaging of the optical lens 100.

[0046] Understandably, in other embodiments, the second optical film 30 may also be disposed on the image side a2 of the cover plate 60, and the third optical film 40 may also be disposed on the object side b1 of the substrate 70.

[0047] Please see Figure 3The third embodiment of this application provides an optical lens 300. The optical lens 300 provided in this embodiment is generally similar in structure to the optical lens 100 provided in the first embodiment, except that in this embodiment, the optical lens 300 includes a first cover plate 60a and a second cover plate 60b. The first cover plate 60a has an object-side surface a1 and an image-side surface a2, and the second cover plate 60b has an object-side surface a3 and an image-side surface a4. The first cover plate 60a is disposed on the object-side surface of the lens assembly 10, and the second cover plate 60b is disposed between the object-side surface of the lens assembly 10 and the image-side surface of the first cover plate 60a. A first optical film 20 is disposed on the object-side surface a1 of the first cover plate 60a, a second optical film 30 is disposed on the image-side surface a4 of the second cover plate 60b, a third optical film 40 is disposed on the object-side surface b1 of the substrate 70, and an imaging surface 50 is disposed on the object-side surface c1 of the photosensitive chip 80. Thus, by setting the first cover plate 60a and the second cover plate 60b, the first optical film 20 and the second optical film 30 are respectively set.

[0048] In this embodiment, when the optical lens 300 is used for imaging, light passes sequentially through the first optical film 20, the object side a1 of the first cover plate 60a, the image side a2 of the first cover plate 60a, the object side a3 of the second cover plate 60b, the image side a4 of the second cover plate 60b, and the second optical film 30 before entering the object side of the first lens 11 of the lens assembly 10. After the light is emitted from the lens assembly 10, it passes sequentially through the third optical film 40, the object side b1 of the substrate 70, and the image side b2 of the substrate 70 before entering the imaging surface 50 of the object side c1 of the photosensitive chip 80 to form an image, thereby realizing the imaging of the optical lens 100.

[0049] Please see Figure 4 The fourth embodiment of this application provides a terminal device 400. The terminal device 400 includes the optical lenses 100, 200, and 300 described in any of the above embodiments. This embodiment uses the terminal device 400 including the optical lens 100 described in the first embodiment as an example for description. The terminal device 400 may include, but is not limited to, mobile phones, tablet computers, smartwatches, vehicle cameras, and monitors.

[0050] Thus, in the terminal device 400 of this embodiment, the optical lens 100 has an anti-reflective film on the object side of the lens assembly 10 to reduce the reflectivity and reflection of light, increase the amount of light entering the lens assembly 10, and ensure the amount of light entering the optical lens 100. This is beneficial to improving the imaging effect of the optical lens 100, making the optical lens 100 suitable for shooting low-light scenes such as at night, thus improving the usage scenarios and imaging effect of the optical lens 100. By setting a blue light cutoff film and a red light cutoff film on the object side and the image side of the lens assembly 10 respectively, the blue light in the light is filtered out by the blue light cutoff film before the light enters the lens assembly 10, eliminating the influence of blue light on the imaging of the optical lens 100 and improving the imaging effect of the optical lens 100. The infrared light in the light passing through the lens assembly 10 is further filtered out by the red light cutoff film, thereby further ensuring the imaging effect of the terminal device 400.

[0051] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. An optical lens, characterized in that, Along the optical axis, including: Lens assembly; A first optical film is disposed on the object side of the lens assembly, and the first optical film is configured as an anti-reflective film; A second optical film is disposed between the image side of the first optical film and the object side of the lens assembly, or disposed on the object side of the first optical film, wherein the second optical film is configured as a blue light cutoff film. A third optical film is disposed on the image side of the lens assembly, and the third optical film is configured as a red light cutoff film; An imaging surface is disposed on the image side of the third optical film and is used to receive light passing through the first optical film, the second optical film, the lens assembly and the third optical film for imaging.

2. The optical lens as described in claim 1, characterized in that, The optical lens also includes a cover plate along the optical axis. The cover plate is disposed on the object side of the lens assembly. The first optical film and the second optical film are respectively disposed on the object side and the image side of the cover plate, or the first optical film and the second optical film are respectively disposed on the image side and the object side of the cover plate.

3. The optical lens as described in claim 1, characterized in that, The optical lens also includes a cover plate along the optical axis. The cover plate is disposed on the object side of the lens assembly. The first optical film is disposed on the object side or image side of the cover plate, and the second optical film is disposed on the object side or image side of the cover plate.

4. The optical lens as described in claim 1, characterized in that, The optical lens also includes a cover plate along the optical axis. The cover plate is disposed on the object side of the lens assembly. The first optical film is disposed on the object side or image side of the cover plate, and the second optical film is disposed on the object side or image side of the cover plate.

5. The optical lens as described in claim 1, characterized in that, The optical lens also includes a cover plate along the optical axis, and the lens assembly includes at least a first lens along the optical axis. The first optical diaphragm is disposed on the object side of the first lens, and the second optical diaphragm is disposed on the object side or image side of the cover plate.

6. The optical lens as described in claim 5, characterized in that, The first lens is made of glass or plastic.

7. The optical lens as described in any one of claims 2 to 5, characterized in that, The cover plate is made of glass or plastic.

8. The optical lens as described in claim 1, characterized in that, The optical lens also includes a substrate along the optical axis, the substrate being disposed between the image side of the lens assembly and the object side of the imaging surface, and the third optical film being disposed on the object side or the image side of the substrate.

9. The optical lens as described in claim 1, characterized in that, The optical lens also includes a photosensitive chip along the optical axis. The photosensitive chip is disposed on the image side of the third optical film, and the imaging surface is disposed on the object side of the photosensitive chip.

10. A terminal device, characterized in that, Includes an optical lens as described in any one of claims 1 to 9.

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