CN211478695U

CN211478695U - UV-protection component

Info

Publication number: CN211478695U
Application number: CN201922221072.XU
Authority: CN
Inventors: 姚峥峥
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-11
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a prevent UV component, wherein prevent UV component set up in optical equipment's light route, wherein prevent UV component includes at least a lens main part and at least a cuticula, wherein the lens main part has one and goes into ultraviolet plain noodles and relative to go into an image side of ultraviolet plain noodles on the light route, is suitable for the lens main part is set up in optical equipment's optical route; and wherein at least one of said protective films is formed on said uv light entrance face of said lens body, wherein said protective film intercepts uv light transmission for said lens body to reduce uv light transmission.

Description

UV-protection component

Technical Field

The utility model relates to an optics field especially relates to a prevent UV component.

Background

Optical products play an increasingly important role in production and life. The existing optical products adopt a large number of resin elements, the resin is low in price, light in weight and not easy to break, and the resin is particularly widely applied to various optical lenses.

Ultraviolet light (UV) from sunlight has a great damaging effect on resins. Particularly, in a lens used in an outdoor environment for a long time, under long-term sunlight irradiation, the transmittance of light such as visible light of an internal resin lens is easily reduced, and damage such as film layer failure is easily caused, so that the defects such as reduction of imaging brightness, increase of parasitic ghost image, unclear imaging and the like of the optical lens are caused.

It is worth mentioning that, according to the energy of the ultraviolet light being 167-.

However, in optical devices with higher precision, such as vehicle-mounted laser detection devices, vehicle-mounted optical lenses, mobile phone lenses, projection devices, and the like, there is a greater requirement for accuracy of light, the performance of the resin lens greatly affects the performance of the whole device, and even the reduction of the efficacy of the optical lens may not meet the requirement of the whole device and needs to be replaced, so that the use cost is greatly increased, which is not favorable for marketization of the optical devices, and the use cost of consumers is increased virtually.

Referring to fig. 1A and 1B, the transmittance of the conventional lens to ultraviolet light is high, the transmittance to light with a wavelength of 290nm to 400nm is higher than 48%, and visible light is highly transmitted, wherein the transmittance of visible light is close to 100%, and the resin lens inside the optical device is easily damaged by ultraviolet light radiation, so that the service life of the resin lens inside the optical device is short, and the use effect during long-time use is affected.

With the development of vehicle-mounted optical devices that are more influential on safety issues, the problem of damage of resin materials by ultraviolet light is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

An advantage of the present invention is to provide a UV-proof member capable of improving UV resistance of a resin member of an optical product.

Another advantage of the present invention is to provide a UV-proof component, which is kept on the light path of an optical device, and reduces the transmission of ultraviolet light, and further reduces the damage of the ultraviolet light to the resin inside the optical device.

Another advantage of the present invention is to provide a UV-proof member, which is transparent through reducing the ultraviolet light to maintain the optical performance of the resin part inside the optical device, and reduces the damage of the ultraviolet light to the resin part to improve the service life of the resin part.

Another advantage of the present invention is to provide a UV blocking member, wherein the UV blocking member further includes a substrate and a UV blocking film formed on the substrate, wherein the UV blocking film effectively blocks ultraviolet light.

Another advantage of the present invention is to provide a UV-proof member, wherein the UV-proof optical lens includes a lens body and is plated on the lens body the UV-proof film layer, wherein the UV-proof film layer blocks the transmission of the ultraviolet light to reduce the transmission of the ultraviolet light to the optical lens.

Another advantage of the present invention is to provide a UV-resistant component, wherein the UV-resistant film layer is plated on an ultraviolet light-transmitting surface of the lens body, wherein the UV-resistant film layer is low in transmittance of ultraviolet light.

Another advantage of the present invention is to provide a UV-proof component, wherein the UV-proof film layer effectively reduces the energy of the ultraviolet light entering an optical lens to reduce the damage of the ultraviolet light to the resin lens, improve the service life of the resin lens.

Another advantage of the present invention is to provide a UV-proof member, wherein the energy of the UV light entering the optical lens is reduced by the coating film, and the service life of the resin lens is increased by more than 2 times.

Another advantage of the present invention is to provide a UV-proof component, wherein the UV-proof film layer is plated on an ultraviolet light incident surface of the substrate, wherein the UV-proof film layer reduces the ultraviolet light to penetrate to an image side surface of the substrate, thereby preventing from being set in the substrate at least one other optical lens on the image side surface side is damaged by the ultraviolet light.

Another advantage of the present invention is to provide a UV-proof member, wherein the UV-proof film layer is formed on both sides of the substrate, and the UV-proof film layer is formed on both sides of the substrate.

Another advantage of the present invention is to provide a UV blocking member, wherein the UV blocking member can be implemented as a UV blocking optical lens.

Another advantage of the present invention is to provide a UV blocking member, wherein the UV blocking member may be implemented as a UV blocking resin.

Another advantage of the present invention is to provide a UV resistant member, wherein the UV resistant member can be implemented as a UV resistant housing.

Another advantage of the present invention is to provide a UV-proof component, wherein the UV-proof resin member includes a resin member and is formed on a UV-proof film layer of the resin member, wherein the UV-proof film layer reduces ultraviolet light to penetrate through the resin member, thereby preventing the resin member from being damaged by the ultraviolet light.

Another advantage of the present invention is to provide a UV-proof member, wherein the UV-proof resin member not only prevents the resin member from being damaged, also protecting the resin member inside the optical device from being reduced by the ultraviolet radiation.

The other advantages and features of the invention will be fully apparent from the following detailed description and realized by means of the instruments and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, the foregoing and other objects and advantages are achieved by a UV prevention member, wherein the UV prevention member is disposed in an optical path of an optical device, comprising:

at least one lens body, wherein said lens body has an ultraviolet entrance face and an image side face opposite to said ultraviolet entrance face in an optical path, said lens body adapted to be disposed in the optical path of said optical device; and

at least one protective film, wherein the at least one protective film is formed on the ultraviolet light inlet surface of the lens main body, and the protective film intercepts ultraviolet light transmission and reduces the ultraviolet light transmission for the lens main body. According to an embodiment of the present invention, the lens body is a resin lens, wherein the pellicle is transparent to the lens body by ultraviolet light, wherein at least one of visible light and infrared light is highly transparent to the image side.

According to an embodiment of the present invention, the optical device includes at least one resin lens.

According to an embodiment of the present invention, the resin lens is adapted to be held on the image side of the optical path of the lens main body, wherein the protective film blocks ultraviolet light from passing through to the resin lens, wherein at least one of visible light and infrared light is transmitted through to the resin lens.

According to one embodiment of the invention, the lens body is selected from the group of materials consisting of glass and resin.

According to one embodiment of the present invention, the pellicle has a cutoff wavelength of 290nm to 400nm, wherein the average transmittance is 10% or less.

According to one embodiment of the present invention, the pellicle is a composite film, wherein the pellicle comprises at least two film units, wherein each of the film units is formed in a stacked configuration.

According to another aspect of the present invention, the present invention further provides a UV blocking member, wherein the UV blocking member is disposed in an optical path of an optical device including at least one resin member, comprising:

a protector body, wherein said protector body has an ultraviolet light entrance surface on an optical path and an image side surface opposite to said ultraviolet light entrance surface, said protector body being adapted such that said resin member is held on said image side surface of said protector body; and

at least one protective film, wherein the protective film is formed on the optical path of the protective body to cut off the transmission of ultraviolet light, so that the resin of the optical device can reduce the radiation of ultraviolet light.

According to one embodiment of the invention, the membrane unit is compositely stacked on the guard body, wherein the membrane unit is selected from the group of materials of metal oxide, semiconductor oxide.

According to an embodiment of the present invention, it is preferable that the resin member is held on an image side of the optical passage of the protector main body, wherein the protective film blocks ultraviolet light from being transmitted to the resin member, wherein at least one of visible light and infrared light is transmitted to the resin member.

According to an embodiment of the present invention, the protector main body has an ultraviolet entrance surface on a light path and an image side surface opposite to the ultraviolet entrance surface, wherein the protective film is plated on the ultraviolet entrance surface of the protector main body.

According to an embodiment of the invention, the guard body is selected from the group of materials consisting of glass and resin.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

FIG. 1A is a graphical representation of a spectral plot of percent reflectance of an optical element of the prior art.

FIG. 1B is a graph showing a spectral curve of the percent transmittance of an optical element according to the prior art.

Fig. 2 is a schematic sectional view of the UV blocking member according to the first preferred embodiment of the present invention.

Fig. 3A is a spectral plot of the percent reflectance of the UV blocking member in a preferred embodiment of the present invention.

Fig. 3B is a graph showing a spectrum curve of the transmittance percentage of the UV blocking member according to the preferred embodiments of the present invention.

Fig. 4 is a schematic cross-sectional view illustrating a UV blocking member applied to an optical lens according to a first preferred embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of an optical lens according to a second preferred embodiment of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of an optical lens in a third preferred embodiment of the present invention.

Fig. 7 is a schematic sectional view illustrating a UV blocking member applied to a laser radar according to a fourth preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

Referring to fig. 2 to 4, a UV blocking member according to a first preferred embodiment of the present invention is disclosed and explained in detail, and the UV blocking member 1 effectively blocks ultraviolet light. The UV blocking member 1 includes a substrate 10 and a pellicle 20 coated on the substrate 10, wherein the pellicle 20 blocks UV light to reduce UV light transmission.

The UV-blocking member 1 may be implemented as a UV-blocking optical lens 1A, wherein the optical apparatus 100 is implemented as an optical lens 100A, wherein the UV-blocking optical lens 1A may cut off ultraviolet light to reduce damage to the inside of the optical lens 100A due to the ultraviolet light.

Preferably, the UV-blocking optical lens 1A is held on the object side of the optical lens 100A. In other words, the ultraviolet light received by the optical lens 100A is transmitted through the UV blocking optical lens 1A. When the UV blocking lens can block the ultraviolet light from passing through to the optical lens 100A. Further, the optical lens 100A may further include at least one other optical lens 101A, wherein the other optical lens 101A is retained on the image side of the UV-blocking optical lens 1A, and the UV-blocking optical lens 1A protects the other optical lens 101A from external contamination, and reduces damage of ultraviolet light to the at least one other optical lens 101A of the optical lens 100A, while not affecting transmittance of visible light and/or infrared light transmitted by the optical lens 100A, and preventing the optical lens 100A from generating ghost images.

The substrate 10 is implemented as a lens body 10A, wherein the pellicle film 20 is formed on a protective film 20A of the lens body 10A, wherein the protective film 20A is low-transmitting ultraviolet light to the lens body 10A.

Preferably, the protective film layer 20A is plated on the lens body 10A. Referring to fig. 2, the lens body 10A has an ultraviolet entrance surface 11A on a light path and an image side surface 12A opposite to the ultraviolet entrance surface 11A, wherein the protective film 20A is coated on the ultraviolet entrance surface 11A of the lens body 10A, wherein the protective film 20A has low ultraviolet transmittance, and protects the lens body 10A and each of the other optical lenses 101A on the image side surface 12A side from being damaged by ultraviolet rays.

Optionally, the protection film layers 20A are respectively formed on the ultraviolet light incident surface 11A and the image side surface 12A of the lens body 10A, wherein the two protection film layers 20A can further reduce ultraviolet light from being transmitted to the accommodating space 31A, so as to keep damage of each of the other optical lenses 101A in the accommodating space 31A to the ultraviolet light reduced.

Preferably, the lens body 10A is a glass lens, and since the lens body 10A is the most object side lens of the optical lens 100A, a certain strength is required to protect the lens body 10A from being damaged in an external environment.

Preferably, the other optical lens 101A is optionally a glass lens or a resin lens, since the resin lens is widely used in each optical lens, and the influence of the ultraviolet light on the resin material easily causes the visible light transmittance of the resin lens inside to decrease, the film layer is damaged due to failure, and the like. The damage of the other optical lens 101A caused by the ultraviolet radiation can be effectively reduced by the protection film layer 20A.

It is noted that the wavelength band of the ultraviolet light is less than the 400nm interval, and the shorter the wavelength of the ultraviolet light, the stronger the energy. Preferably, the protective film layer 20A can reduce the transmittance of the ultraviolet light with a wavelength band of 290nm to 400nm as much as possible, so as to reduce the damage of the other optical lens 101A by the ultraviolet light.

Referring to fig. 2, in a first preferred embodiment of the present invention, the protective film layer 20A is implemented as a composite film, wherein the protective film layer 20A can be laminated on the lens body 10A by using metal oxide, semiconductor oxide, etc., and can cut off ultraviolet light, and highly transmit visible light and/or infrared light, so as to ensure that the optical lens 100A can effectively receive visible light and/or infrared light.

It is worth mentioning that the coating mode can be at least one selected from the group consisting of evaporation, sputtering and coating.

Further, the protective film 20A is made of various metal oxides, silicon dioxide, and other materials and their mixtures, and it can be understood and appreciated by those skilled in the art that the protective film 20A can be made of different materials according to the specific design, which is not intended to limit the scope and features of the present invention.

The protective film layer 20A includes a predetermined number of film units 21A, wherein the film units 21A are sequentially coated, and the number of layers of the film units 21A can be adjusted according to the specific design and can be selected to have different thicknesses, such as different thicknesses according to the optical device 100, which is not a limitation to the scope and features of the present invention.

Referring to fig. 3A and 3B, the protective film layer 20A ensures transmittance of the optical lens 100A to visible light, improves imaging brightness of the optical lens 100A, reduces generation of parasitic light ghost image, and ensures various imaging performances of the optical lens 100A, by using ultraviolet light with a low transmittance band smaller than 400nm and light with a high transmittance and a low reverse band of 400nm to 750 nm.

More preferably, the overcoat cuts light in the wavelength band 290nm to 400nm, wherein the average transmittance is 10% or less.

It is worth noting that the ultraviolet light with a wavelength less than 360nm is absorbed by the protective film layer 20A, so that the transmittance of the ultraviolet light is less than 5%, and the ultraviolet light with a wavelength of 360nm to 400nm is higher than that of the protective film layer 20A, but the transmittance is effectively reduced, so that the transmittance of the ultraviolet light with a wavelength of 290nm to 400nm is effectively reduced, and the other optical lenses 101A inside the optical lens 100A are protected.

Referring to fig. 3A, the reflectivity of the ultraviolet light with a wavelength band less than 400nm is increased, and the protective film layer 20A has low transmittance of the ultraviolet light with a wavelength band less than 400nm, so that the ultraviolet light with a wavelength band less than 400nm is reflected to the external environment more, and the influence on the other optical lenses 101A inside the optical lens 100A is reduced.

Referring to fig. 3B, compared to the conventional method of plating a general film on the lens body 10A, it cannot reduce the transmission of the ultraviolet light with a wavelength of 290nm to 400nm, so that the other optical lenses 101A of the optical lens 100A may be damaged greatly under the ultraviolet light, and the protective film layer 20A of the first preferred embodiment of the present invention effectively improves the service life and the long-term use effect of the other optical lenses 101A by the ultraviolet light with a wavelength of 290nm to 400nm, thereby improving the service life of the other optical lenses 101A by more than 2 times.

Referring to fig. 4, the UV-blocking lens is applied to the optical lens 100A with a 1G3P structure, wherein the optical lens 100A includes a lens barrel 30A, the UV-blocking lens 1A and three other optical lenses 101A. The UV-proof lens 1A and the other optical lenses 101A are sequentially accommodated in an accommodating space 31A of the lens barrel 30A and a light inlet 32A communicating the accommodating space 31A with an external space, and optical axes of the UV-proof lens 1A and the other optical lenses 101A are consistent, thereby preventing parasitic images from increasing.

Preferably, each of the other optical lenses 101A is a resin aspheric lens, wherein the UV-proof lens 1A is tightly attached to the lens barrel 30A, so that ultraviolet light with a wavelength band less than 400nm enters the accommodating space 31A of the lens barrel 30A, thereby reducing the ultraviolet light transmitted to the three other optical lenses 101A arranged in sequence and reducing the damage of the other optical lenses 101A. More preferably, the UV-proof lens 1A is closely attached to the lens barrel 30A, so as to reduce ultraviolet light with a wavelength band of 290nm to 400nm from entering the accommodating space 31A of the lens barrel 30A

Each of the other optical lenses 101A is accommodated in the accommodating space 31A in an aligned manner, wherein the UV-blocking optical lens 1A is held in the light incident direction of the optical lens 101A. Further, the UV-proof optical lens 1A is held at the light inlet 32A of the lens barrel 30A of the optical lens 101A and is accommodated in the accommodating space 31A.

Referring to fig. 5, a second preferred embodiment of the present invention is disclosed and explained in detail, wherein the UV prevention member 1 is implemented as a UV prevention lens 1B, wherein the UV prevention lens 1B becomes a new embodiment unlike the implementation of the first preferred embodiment.

The UV lens 1B includes a lens body 10B and at least two protective film layers 20B coated on both surfaces of the lens body 10B. The protective film layers 20B on both sides collectively cut off ultraviolet light, highly transparent visible light and/or infrared light.

The UV lens 1B is applied to the optical lens 100B with a structure of 1G4P, wherein the optical lens 100B includes a lens barrel 30B, the UV-proof lens 1B and four other optical lenses 101B. The UV-proof lens 1B and the other optical lenses 101B are sequentially accommodated in an accommodating space 31B of the lens barrel 30B and an optical inlet 32B communicating the accommodating space 31B with an external space, and optical axes of the UV-proof lens 1B and the other optical lenses 101B are the same, thereby preventing parasitic images from increasing.

The UV prevention lens 1B is disposed in an incident direction of the other optical lens 101B, and the UV prevention lens 1B protects the other optical lens 101B from impurities of the external environment. The UV-blocking lens 1B and the lens barrel 30B cut off ultraviolet light to reduce damage of at least one of the other optical lenses 101B of the optical lens 100B by the ultraviolet light, so as to prolong the service life of the other optical lenses 101B.

Each of the other optical lenses 101B is accommodated in the accommodating space 31B in an aligned manner, wherein the UV-blocking optical lens 1B is held in the light incident direction of the optical lens 101B. Further, the UV-proof optical lens 1B is held at the light inlet 32B of the lens barrel 30B of the optical lens 101B and is accommodated in the accommodating space 31B.

Preferably, the UV-protective lens 1B is implemented as a glass lens.

Preferably, the other optical lens 101B is implemented as a resin lens to reduce the cost of the optical lens 100B while reducing the weight of the optical lens 100B.

Further, the lens main body 10B has an ultraviolet light incident surface 11B and an image side surface 12B, wherein the protective film layer 20B is respectively coated on the ultraviolet light incident surface 11B and the image side surface 12B of the lens main body 10B, and the protective film layers 20B on both sides can further cut off ultraviolet light to further transmit ultraviolet light at a low transmittance, visible light at a high transmittance and/or infrared light, so as to reduce damage of the other optical lenses 101B on the image side surface 12B side of the lens main body 10B by ultraviolet radiation.

It should be noted that the materials of the protective film 20B on both sides of the lens body 10B may be the same or different, and the protective film 20B may be designed accordingly according to specific needs.

Referring to fig. 6, a UV prevention member 1 of a third preferred embodiment of the present invention is disclosed and explained in detail, wherein the UV prevention member 1 is implemented as a UV prevention optical lens 1A, different from the first preferred embodiment, the UV prevention optical lens 1A is applied to the optical lens 100C of a 2G4P frame, different from the first preferred embodiment, wherein the optical lens 100C further includes the UV prevention optical lens 1A and five other optical lenses 101C, wherein the other optical lenses 101C further include a first lens 1011C, a second lens 1012C, a third lens 1013C, a fourth lens 1014C and a fifth lens 1015C.

The protective film layer 20A of the UV blocking optical lens 1A is plated on the ultraviolet entrance surface 11A of the lens main body 10A, wherein the protective film layer 20A has low ultraviolet transmittance, and protects the lens main body 10A and/or each of the other optical lenses 101C on the image side surface 12A side of the lens main body 10A from being damaged by ultraviolet rays.

Optionally, the protection film layer 20A is plated on the uv light incident surface 11A and the image side surface 12A of the lens body 10A.

Optionally, the protective film layer 20A is plated on the image side surface 12A of the lens body 10A to protect each of the other optical lenses 101C on the image side surface 12A side of the lens body 10A from ultraviolet rays.

The optical lens 100C further includes a lens barrel 30C, wherein the lens barrel 30C has an accommodating space 31C and a light inlet 32C communicating the accommodating space 31C with an external space, wherein the other optical lens 101C is accommodated in the accommodating space 31C, and wherein the UV-proof optical lens 1A is maintained in a light inlet direction of the optical lens 101C.

Further, the UV-proof optical lens 1A is held at the light inlet 32C of the lens barrel 30C of the optical lens 101C and is accommodated in the accommodating space 31C.

Further, the first lens 1011C, the second lens 1012C, the third lens 1013C, the fourth lens 1014C, and the fifth lens 1015C are sequentially accommodated in the accommodating space 31C.

Preferably, the second lens 1012C and the UV protection lens 1A are implemented as a glass lens, wherein an ultraviolet entrance surface 11A of the lens body 10A is coated with the protective film 20A, and wherein the first lens 1011C, the third lens 1013C, the fourth lens 1014C, and the fifth lens 1015C are implemented as resin lenses. The UV-blocking lens 1A cuts off UV, highly transmits visible light and/or infrared light, wherein the first lens 1011C, the third lens 1013C, the fourth lens 1014C and the fifth lens 1015C are reduced from being damaged by UV radiation.

Optionally, any one of the first lens 1011C, the second lens 1012C, the third lens 1013C, the fourth lens 1014C and the fifth lens 1015C may be coated with the protective film 20A to achieve the effect of cutting down UV light.

Referring to fig. 7, a UV prevention member 1 according to a fourth preferred embodiment of the present invention is disclosed and explained in detail, wherein the UV prevention member 1 becomes a new embodiment unlike the first preferred embodiment, wherein the UV prevention member 1 is implemented as a UV prevention protector 1D, and the optical apparatus 100 is implemented as a laser radar 100D, wherein the UV prevention protector 1D is disposed on a light path of the laser radar 100D and protects the laser radar 100D from external ultraviolet light.

Preferably, the UV protector 1D is implemented as a housing, wherein the UV protector 1D is covered on a light path of the laser radar 100D, so that ultraviolet light is blocked by the UV protector 1D to reduce damage of an inner resin member of the laser radar 100D due to ultraviolet radiation.

Preferably, the UV protector 1D includes a protector body 10D and a protective film 20D coated on the protector body 10D, wherein the protective film 20D reduces the penetration of ultraviolet light to protect the protector body 10D and has high laser light transmittance, thereby reducing the damage of the protector body 10D and protecting the resin member inside the laser radar 100D from the radiation of ultraviolet light.

Preferably, the protector body 10D is implemented as a resin material, which is widely used for the housing of the laser radar 100D because of its light weight and low price. The protector main body 10D has an ultraviolet entrance surface 11D on a light path and an image side surface 12D opposite to the ultraviolet entrance surface 11D, and the protective film 20D is formed on the ultraviolet entrance surface 11D of the protector main body 10D to cut off ultraviolet light from transmitting to the protector main body 10D, so as to reduce damage of the protector main body 10D caused by ultraviolet light radiation. Further, the resin member on the image side surface 12D side of the protector main body 10D is reduced from being damaged by the influence of ultraviolet radiation.

Optionally, the protection film layer 20D is formed on the ultraviolet light incident surface 11D and the image side surface 12D of the protection device main body 10D, respectively, so as to further prevent ultraviolet light from being radiated to the protection device main body 10D through the protection film layer 20D, thereby effectively prolonging the service life of the protection device main body 10D and reducing the damage of the resin member on the image side surface 12D side of the protection device main body 10D due to the influence of ultraviolet radiation.

It is worth mentioning that the protector main body 10D may be implemented as a composite material, wherein the protective film layer 20D may be plated in multiple layers on at least one side of the protector main body 10D.

Alternatively, the protector body 10D may be implemented as an optical lens, and those skilled in the art will understand and appreciate that the type of the protector body 10D is not limited in any way. It should be noted that the protector main body 10D may also be one of the optical lenses of the laser radar 100D, and is not limited in this respect.

A UV blocking member 1 according to a fifth preferred embodiment of the present invention is disclosed and explained in detail, wherein the UV blocking member 1 is different from the fourth preferred embodiment to become a new embodiment, wherein the UV blocking member 1 is implemented as an optical lens on the most object side of a laser radar lens in the laser radar 100D, wherein the UV blocking member 1D is disposed on a light path of the laser radar lens and protects the resin lens inside the laser radar lens from being damaged by external ultraviolet light.

The embodiments of the various embodiments can be freely combined, and the present invention is not limited in any way in this respect. In addition, the UV-proof member can also be applied to all the optical devices including the resin member inside, such as various optical devices as an on-vehicle lens, a mobile phone lens, a monitoring lens, a laser radar, and the like, in this respect the present invention is not limited thereto.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A UV blocking member disposed in an optical path of an optical device, comprising:

a lens body, wherein said lens body has an ultraviolet entrance face and an image side face opposite to said ultraviolet entrance face in an optical path, adapted to be disposed in the optical path of said optical device; and

at least one protective film, wherein the at least one protective film is formed on the ultraviolet light inlet surface of the lens main body, and the protective film intercepts ultraviolet light transmission and reduces the ultraviolet light transmission for the lens main body.

2. The UV-resistant member of claim 1, wherein the pellicle can block transmission of ultraviolet light to the image side of the lens body, wherein at least one of visible light and infrared light is transmitted up to the image side of the lens body.

3. The UV-blocking member of claim 1, wherein the optical apparatus comprises at least one resin lens, wherein the pellicle is held in an ultraviolet light incident direction of the resin lens for the pellicle to block ultraviolet light from the resin lens.

4. The UV-blocking member according to claim 3, adapted to the resin lens to be held on an image side of an optical passage of the lens main body, wherein the overcoat blocks transmission of ultraviolet light to the resin lens, wherein at least one of visible light and infrared light is transmitted to the resin lens.

5. The UV resistant member according to claim 1, wherein the lens body is selected from a material group of a glass piece and a resin piece.

6. The UV-resistant member of claim 1, wherein the overcoat cuts light in the wavelength band of 290-400 nm with an average transmittance of 10% or less.

7. A UV blocking member disposed in an optical path of an optical apparatus including at least one resin member, comprising:

8. The UV-blocking member according to claim 7, adapted such that the resin member is held on an image side of an optical passage of the protector main body, wherein the protective film blocks transmission of ultraviolet light to the resin member, wherein at least one of visible light and infrared light is highly transmitted to the resin member.

9. The UV resistant member according to claim 7, wherein the protector body is selected from a material group of a glass piece and a resin piece.

10. The UV-resistant member of claim 7, wherein the overcoat cuts light in the wavelength band of 290-400 nm with an average transmittance of 10% or less.