Optical lens group
By setting a nanolayer on the surface of the optical lens, the low refractive and low reflection characteristics of SiO2 spherical particles are used to solve the fog and fog problems caused by ultra-low reverse film lenses, and the ghosting between the lenses is improved and the image quality is improved.
Patent Information
- Application Number
- CN202423137802.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The surface microstructure of existing ultra-low reverse film lenses increases the intensity of light scattering on the lens surface, resulting in abnormal phenomena such as fog and concealment on the shooting screen.
The nanolayer is arranged on the surface of the optical lens, and the low refractive and low reflection characteristics of SiO2 pellet particles are used to make the nanolayer have ultra-low reverse and low scattering characteristics.
It effectively improves the ghosting phenomenon between lenses and the fog and concealment phenomenon of the image screen, and improves the image quality of the lens.
Smart Images
Figure CN222599866U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lens coating, in particular to an optical lens group. Background Art
[0002] With the increasing demand for imaging performance in the mobile phone market, the number of lenses in the main camera lens has increased, and users' requirements for clear imaging quality have continued to rise. Therefore, when optimizing and improving the ghosting phenomenon of the lens, lens manufacturers use ultra-low reflection film systems for lens coating. The grass-like and cone-like microstructures on the surface of the ultra-low reflection film system can reduce the intensity of light reflected from the lens, and can optimize the ghosting phenomenon caused by the light energy after multiple reflections between the lenses of the ghost light path. However, the surface microstructure of the ultra-low reflection film system increases the light scattering intensity on the lens surface, resulting in abnormal phenomena such as fogging and blurring in the captured image. Utility Model Content
[0003] Based on this, it is necessary to provide an optical lens group to address the problem that the surface microstructure of the existing ultra-low reflection film lens easily causes abnormal phenomena such as fogging and blurring in the captured image.
[0004] An optical lens assembly, comprising:
[0005] At least six optical lenses arranged on the same optical axis; and
[0006] A nanolayer, the nanolayer being disposed on at least one surface of at least one of the optical lenses, wherein the nanolayer comprises a plurality of SiO2 small sphere particles, and the thickness CT of the nanolayer satisfies the relationship: 9 nm <CT<300nm。
[0007] In one embodiment, the maximum reflectivity of the nanolayer at a wavelength of 400 nm to 1000 nm is less than 0.3%, and the average reflectivity is less than 0.2%.
[0008] In one embodiment, the thickness of the nanolayer ranges from 180nm to 220nm; the content of SiO2 spherical particles in the spraying liquid used to form the nanolayer ranges from 7.12% to 8.31%, and the refractive index of the spraying liquid used to form the nanolayer ranges from 1.1403 to 1.1413.
[0009] In one embodiment, the optical lens assembly further includes an ultra-low reflection film layer, and the ultra-low reflection film layer is arranged between the surface of the optical lens and the nano layer.
[0010] In one embodiment, the thickness of the nanolayer ranges from 9 nm to 11 nm; the content of SiO2 spherical particles in the spraying liquid used to form the nanolayer ranges from 0.28% to 0.31%, and the refractive index of the spraying liquid used to form the nanolayer ranges from 1.4242 to 1.4252.
[0011] In one embodiment, the optical lens assembly further includes an anti-reflection film layer, and the anti-reflection film layer is arranged between the surface of the optical lens and the nano layer.
[0012] In one embodiment, the thickness of the nanolayer ranges from 110nm to 130nm; the content of SiO2 spherical particles in the spraying liquid used to form the nanolayer ranges from 3.84% to 4.02%, and the refractive index of the spraying liquid used to form the nanolayer ranges from 1.3993 to 1.4003.
[0013] In one embodiment, at least one of the optical lenses has two surfaces provided with the nanolayer, and the optical lens satisfies the following relationship:
[0014] ds1<Ds1<ds12;
[0015] ds2<Ds2<ds22;
[0016] Among them, Ds1 is the spraying range of the SURF1 surface of the optical lens, ds1 is the effective diameter caliber of the SURF1 surface of the optical lens, and ds12 is the position diameter of the supporting surface of the SURF1 surface of the optical lens; Ds2 is the spraying range of the SURF2 surface of the optical lens, ds2 is the effective diameter caliber of the SURF2 surface of the optical lens, and ds22 is the position diameter of the supporting surface of the SURF2 surface of the optical lens.
[0017] In one of the embodiments, both surfaces of at least one of the optical lenses are provided with the ultra-low reflection film layer.
[0018] In one of the embodiments, the effective diameter edge curvature angle of the optical lens satisfies 0°<∠a<40°, and after the nanolayer is provided, the uniformity of the lens edge film layer of the optical lens satisfies ∠a>40°.
[0019] The optical lens group of the present application arranges a nanolayer on the surface of the optical lens, and utilizes the low refraction and low reflection properties of SiO2 spherical particles to make the nanolayer have ultra-low reflection and low scattering properties, thereby effectively improving the ghost images between lenses and the fogging and blurring of the image, and effectively improving the image quality of the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1A schematic diagram of the optical lens assembly provided in the present application spraying a coating liquid on an optical lens;
[0021] Figure 2 A schematic diagram of the optical lens assembly provided in the present application spraying a coating liquid on a first surface and a second surface of an optical lens;
[0022] Figure 3A A schematic diagram of SiO2 small ball particles in a nano-layer according to the first embodiment of the optical lens assembly provided by the present application;
[0023] Figure 3B A graph showing the relationship between the wavelength and reflectivity of the nano-layer of the first embodiment of the optical lens assembly provided by the present application;
[0024] Figure 3C This is a real picture of the first embodiment of the optical lens assembly provided by the present application;
[0025] Figure 4A A schematic diagram of SiO2 small ball particles in a nano-layer according to the second embodiment of the optical lens assembly provided by the present application;
[0026] Figure 4B A graph showing the relationship between the wavelength and reflectivity of the nano-layer of the second embodiment of the optical lens assembly provided by the present application;
[0027] Figure 4C This is a real picture of the second embodiment of the optical lens assembly provided by the present application;
[0028] Figure 5A A schematic diagram of SiO2 small ball particles in a nano-layer according to a third embodiment of the optical lens assembly provided by the present application;
[0029] Figure 5B A graph showing the relationship between the wavelength and reflectivity of the nano-layer of the third embodiment of the optical lens assembly provided by the present application;
[0030] Figure 5C This is a real picture of the third embodiment of the optical lens group provided in this application. DETAILED DESCRIPTION
[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0037] Based on the problem that the surface microstructure of the existing ultra-low reflection film lens easily leads to abnormal phenomena such as fogging and blurring in the shooting picture, the present application provides an optical lens set. The optical lens set sets a nano layer on the surface of the optical lens, and uses the low refraction and low reflection characteristics of SiO2 small ball particles to make the nano layer have ultra-low reflection and low scattering characteristics, effectively improving the ghosting between lenses and the fogging and blurring of the image picture, and effectively improving the image quality of the lens.
[0038] Specifically, the present application provides an optical lens assembly, which may include a nanolayer and at least six optical lenses, at least one surface of at least one of the optical lenses being provided with the nanolayer. The nanolayer comprises a plurality of SiO2 small sphere particles, and the thickness CT of the nanolayer satisfies the relationship: 9 nm <CT<300nm。
[0039] It is understood that the nano-layer can be formed by directly spraying a spraying liquid on the surface of the optical lens, and the spraying liquid is a solution containing SiO2 beads. By controlling the film thickness of the nano-layer, it is possible to ensure that the SiO2 beads are evenly laid on the surface of the optical lens, and to ensure that the nano-layer can effectively reduce the intensity of the ghost image light path and avoid the phenomenon of fogging of the image screen.
[0040] like Figure 1 As shown, the nanolayer can firstly atomize the spray liquid, and then continuously return the spray liquid to the surface of the optical lens through a nozzle arranged above the optical lens, so that the SiO2 small ball particles are deposited on the surface of the optical lens to form the nanolayer.
[0041] More specifically, in some embodiments, the maximum reflectivity of the surface of the optical lens with the nanolayer at a wavelength of 400nm to 1000nm is less than 0.3%, and the average reflectivity is less than 0.2%. In this way, by controlling the reflectivity of the surface of the optical lens with the nanolayer to visible light, the intensity of the ghost light path can be effectively reduced, and the ghost light path is prevented from reflecting between the optical lenses, thereby avoiding the generation of ghost images.
[0042] Optionally, in some embodiments, the thickness of the nanolayer is in the range of 180nm to 220nm, and the nanolayer can be formed by spraying a spray liquid having a content of SiO2 small ball particles in the range of 7.12% to 8.31% and a refractive index in the range of 1.1403 to 1.1413 on the surface of the optical lens. In this way, by controlling the content of SiO2 small ball particles in the nanolayer and the thickness of the nanolayer, the surface of the film layer of the individual SiO2 small ball particles on the surface of the optical lens can be ensured to be flat, so that the nanolayer can both reduce the intensity of the ghost image light path and avoid the phenomenon of fogging of the image screen.
[0043] Preferably, in some embodiments, the optical lens assembly further includes an ultra-low reflection film layer, which is disposed between the surface of the optical lens and the nano-layer. In other words, a layer of ultra-low reflection film layer can be firstly coated on the surface of the optical lens, and then a spraying liquid can be sprayed on the ultra-low reflection film layer to form a nano-layer. The ultra-low reflection film layer can reduce the intensity of light reflected from the lens by utilizing the grass-like and cone-like microstructures on the surface, so as to reduce the energy of light after multiple reflections between the lenses in the ghost light path to optimize the ghost phenomenon, and the nano-layer can fill the surface microstructure of the ultra-low reflection film layer to avoid the phenomenon of fogging of the image screen.
[0044] Preferably, based on the ability of the ultra-low reflection film layer to weaken the ghost image optical path, the thickness of the nano layer can be appropriately controlled to be relatively small. Therefore, in some embodiments, the thickness of the nano layer ranges from 9nm to 11nm. The nano layer can be formed by spraying a spray liquid with a content of SiO2 small ball particles ranging from 0.28% to 0.31% and a refractive index ranging from 1.4242 to 1.4252 on the surface of the optical lens. In this way, by controlling the thickness of the nano layer, the SiO2 small ball particles can be attached to the surface microstructure surface of the ultra-low reflection film layer, ensuring the surface flatness of the ultra-low reflection film layer.
[0045] Preferably, in some embodiments, the optical lens assembly further comprises an anti-reflection film layer, and the anti-reflection film layer is disposed between the surface of the optical lens and the nano-layer. In other words, an anti-reflection film layer can be firstly plated on the surface of the optical lens, and then a spraying liquid is sprayed on the anti-reflection film layer to form the nano-layer.
[0046] With such an arrangement, through the anti-reflection film layer, it is possible to ensure that the nanolayer uses fewer SiO2 sphere particles to weaken the reflective properties of the film layer while maintaining the characteristics of a smooth surface and low scattering effect, so that the nanolayer has an ultra-low reflection characteristic, thereby optimizing the problem of high reflectivity of the anti-reflection film layer and reducing the ghost image intensity of the lens.
[0047] Preferably, based on the effect that the anti-reflection film layer can reduce the thickness of the nano-layer, in some embodiments, the thickness of the nano-layer ranges from 110nm to 130nm, and the nano-layer can be formed by spraying a spray liquid having a content of SiO2 small ball particles ranging from 3.84% to 4.02% and a refractive index ranging from 1.3993 to 1.4003 on the surface of the optical lens. In this way, by setting the anti-reflection film layer and controlling the thickness of the nano-layer to be in the range of 110nm to 130nm, the nano-layer can have ultra-low reflection characteristics, optimize the problem of high reflectivity of the anti-reflection film layer, and reduce the ghost image intensity of the lens.
[0048] Furthermore, if Figure 2 As shown, in some embodiments, at least one of the optical lenses has the nano layer on two surfaces, and the optical lens satisfies the following relationship: ds1<Ds1<ds12; ds2<Ds2<ds22; wherein, Ds1 is the spraying range of the SURF1 surface of the optical lens, ds1 is the effective diameter of the SURF1 surface of the optical lens, and ds12 is the position diameter of the supporting surface of the SURF1 surface of the optical lens; Ds2 is the spraying range of the SURF2 surface of the optical lens, ds2 is the effective diameter of the SURF2 surface of the optical lens, and ds22 is the position diameter of the supporting surface of the SURF2 surface of the optical lens. In this way, by controlling the spraying range, it can effectively ensure that SiO2 small ball particles can be attached to the effective diameter of the optical lens to form a nano layer, effectively ensure the low reflection and low scattering characteristics of the optical lens, and also enable the SiO2 small ball particles to be attached to the position of the connecting mechanism of the effective diameter of the optical lens, effectively ensuring the spraying integrity of the transition area between the effective diameter and the mechanism diameter.
[0049] Preferably, in some embodiments, at least one of the optical lenses has the ultra-low reflection film on both surfaces. This arrangement enables the ultra-low reflection film to be attached to both sides of the optical lens, which can effectively reduce the degree of ghost images reflected in the lens and improve the clarity of the image formed by the lens.
[0050] Preferably, when spraying a nanolayer with a thickness of 180nm to 220nm, the uniformity of the SiO2 ball particle formation is affected by the edge curvature of the optical lens, and the nanolayer at the protruding position and the nanolayer at the flat position are prone to produce a difference in film thickness. Therefore, in some embodiments, the effective diameter edge curvature angle of the optical lens of the present application satisfies 0°<∠a<40°, and after the nanolayer is set, the uniformity of the film layer at the edge of the lens of the optical lens satisfies ∠a>40°. In other words, the optical lens of the present application is preferably an optical lens whose effective diameter edge curvature angle satisfies 0°<∠a<40°, and after the spraying liquid is sprayed, the uniformity of the film layer at the edge of the lens of the optical lens satisfies ∠a>40°. In this way, by preferably using the optical lens, it is possible to avoid the difference in film thickness of the nanolayer formed by spraying at the protruding position and the flat position, so that the nanolayer has better uniformity.
[0051] The optical lens set of the present application is further described below in conjunction with specific embodiments.
[0052] like Figure 3A , Figure 3B and Figure 3C As shown, in the first embodiment of the present application, a nano-layer with a thickness of 180nm to 220nm is formed by directly spraying a spray liquid with a content of SiO2 small ball particles ranging from 7.12% to 8.31% and a refractive index ranging from 1.1403 to 1.1413 on both surfaces of the optical lens. Figure 3A It can be seen that the SiO2 sphere particles are evenly distributed in the nanolayer. Figure 3B It can be concluded that the maximum reflectivity of the surface of the optical lens for light with a wavelength of 400nm to 780nm is less than 0.3%, and the average reflectivity is less than 0.2%. Figure 3C It can be seen that the optical lens assembly of the first embodiment has a clear picture in actual shooting without fogging.
[0053] like Figure 4A , Figure 4B and Figure 4C As shown, in the second embodiment of the present application, an ultra-low reflection film layer is firstly plated on the two surfaces of the optical lens, and then a spraying liquid having a content of SiO2 small ball particles ranging from 0.28% to 0.31% and a refractive index ranging from 1.4242 to 1.4252 is sprayed on the ultra-low reflection film layer to form a nano layer with a thickness of 9nm to 11nm. Figure 4A It can be seen that the SiO2 sphere particles in the nanolayer are evenly distributed in the surface microstructure of the ultra-low reflection film layer. Figure 4B It can be concluded that the maximum reflectivity of the surface of the optical lens for light with a wavelength of 400nm to 780nm is less than 0.3%, and the average reflectivity is less than 0.2%. Figure 4CIt can be seen that the optical lens assembly of the second embodiment has a clear picture in actual shooting, with only slight fogging.
[0054] like Figure 5A , Figure 5B and Figure 5C As shown, in the third embodiment of the present application, an anti-reflection film layer is firstly plated on the two surfaces of the optical lens, and then a spraying liquid having a content of SiO2 small ball particles ranging from 3.84% to 4.02% and a refractive index ranging from 1.3993 to 1.4003 is sprayed on the anti-reflection film layer to form a nano-layer with a thickness of 110nm to 130nm, Figure 5A It can be seen that the SiO2 sphere particles are evenly distributed in the nanolayer. Figure 5B It can be concluded that the maximum reflectivity of the surface of the optical lens for light with a wavelength of 400nm to 780nm is less than 0.3%, and the average reflectivity is less than 0.2%. Figure 5C It can be seen that the optical lens assembly of the third embodiment has a clear picture in actual shooting without fogging.
[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. An optical lens assembly, characterized in that: include: At least six optical lenses arranged on the same optical axis; and A nanolayer, the nanolayer being disposed on at least one surface of at least one of the optical lenses, wherein the nanolayer comprises a plurality of SiO2 small sphere particles, and the thickness CT of the nanolayer satisfies the relationship: 9 nm <CT<300nm。 2. The optical lens assembly according to claim 1, characterized in that: The maximum reflectivity of the nano-layer at a wavelength of 400nm to 1000nm is less than 0.3%, and the average reflectivity is less than 0.2%.
3. The optical lens assembly according to claim 2, characterized in that: The thickness of the nanolayer ranges from 180nm to 220nm; the content of SiO2 spherical particles in the spraying liquid used to form the nanolayer ranges from 7.12% to 8.31%, and the refractive index of the spraying liquid used to form the nanolayer ranges from 1.1403 to 1.1413.
4. The optical lens assembly according to claim 2, characterized in that: The optical lens assembly further includes an ultra-low reflection film layer, which is arranged between the surface of the optical lens and the nano layer.
5. The optical lens assembly according to claim 4, characterized in that: The thickness of the nanolayer ranges from 9nm to 11nm; the content of SiO2 ball particles in the spraying liquid used to form the nanolayer ranges from 0.28% to 0.31%, and the refractive index of the spraying liquid used to form the nanolayer ranges from 1.4242 to 1.4252.
6. The optical lens assembly according to claim 2, characterized in that: The optical lens assembly further includes an anti-reflection film layer, which is arranged between the surface of the optical lens and the nano layer.
7. The optical lens assembly according to claim 6, characterized in that: The thickness of the nanolayer ranges from 110nm to 130nm; the content of SiO2 spherical particles in the spraying liquid used to form the nanolayer ranges from 3.84% to 4.02%, and the refractive index of the spraying liquid used to form the nanolayer ranges from 1.3993 to 1.4003.
8. The optical lens assembly according to claim 2, characterized in that: At least one of the optical lenses has the nanolayers on both surfaces, and the optical lens satisfies the following relationship: ds1<Ds1<ds12; ds2<Ds2<ds22; Among them, Ds1 is the spraying range of the SURF1 surface of the optical lens, ds1 is the effective diameter caliber of the SURF1 surface of the optical lens, and ds12 is the position diameter of the supporting surface of the SURF1 surface of the optical lens; Ds2 is the spraying range of the SURF2 surface of the optical lens, ds2 is the effective diameter caliber of the SURF2 surface of the optical lens, and ds22 is the position diameter of the supporting surface of the SURF2 surface of the optical lens.
9. The optical lens assembly according to claim 4, characterized in that: The two surfaces of at least one of the optical lenses are provided with the ultra-low reflection film layer.
10. The optical lens assembly according to claim 4, characterized in that: The effective diameter edge curvature angle of the optical lens satisfies 0°<∠a<40°, and after the nano layer is provided, the uniformity of the lens edge film layer of the optical lens satisfies ∠a>40°.