Patent Publication Number: US-2019196218-A1

Title: Lightweight and buoyant eyeglasses and method for manufacturing same

Description:
FIELD 
     The subject matter herein generally relates to optical aids. 
     BACKGROUND 
     During water sports or even face washing, your eyeglasses may fall into the water and be difficult to find. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Implementations of the present technology will now be described, by way of example only, with reference to the attached figures. 
         FIG. 1  is an isometric view of lightweight and buoyant eyeglasses including a pair of spectacle lenses, according to a first embodiment. 
         FIG. 2  is a cross-sectional view of a spectacle lens of  FIG. 1  in accordance with one exemplary embodiment. 
         FIG. 3  is a cross-sectional view of a spectacle lens of  FIG. 1  in accordance with one exemplary embodiment. 
         FIG. 4  is a cross-sectional view of a spectacle lens of  FIG. 1  in accordance with one exemplary embodiment. 
         FIG. 5  is a flowchart for manufacturing the lightweight and buoyant eyeglass in  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION 
     It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale, and the proportions of certain parts may be exaggerated to illustrate details and features of the present disclosure better. The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings, in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.” 
     Several definitions that apply throughout this disclosure will now be presented. 
     The term “substantially” is defined to be essentially conforming to the particular dimension, shape, or other feature that the term modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. The references “a plurality of” and “a number of” mean “at least two.” 
     Example 1 
       FIG. 1  illustrates a lightweight and buoyant eyeglass  100  according to one embodiment. The lightweight and buoyant eyeglass  100  includes a spectacle frame  30 , two nose supports  32  formed with the spectacle frame  30 , and two eyeglass legs  40  connecting with the spectacle frame  30 . Two spectacle lenses  10  are received in the spectacle frame  30 . The spectacle frame  30 , the two spectacle lenses  10 , the nose supports  32 , and the two eyeglass legs  40  are made from a same material, a main component of the material is cyclic block copolymer (CBC). This material allows the lightweight and buoyant eyeglass  100  to be buoyant in water and lightweight. 
     In a preferred embodiment, ultraviolet absorber is doped into the circular block copolymers to form ultraviolet absorbing properties, especially to form the spectacle lenses  10 . A weight ratio of the ultraviolet absorber in a total weight of the circular block copolymers and the ultraviolet absorbers is between 0.0003% and 5.8%. This allows the lightweight and buoyant eyeglass  100  to have strongly block ultraviolet light. 
     In a preferred embodiment, a compound is doped into the circular block copolymers to increase strength and impact resistance of the lightweight and buoyant eyeglass  100 , and the compound has a mass percentage between about 0.0023% to about 47.64% of a total mass of the compound and cyclic block copolymer. 
     The compound is selected from a group consisting of graphene, carbon nanotube, polycarbonate, and any combination there lightweight and buoyant. 
     The spectacle lens  10  can be single focus, bi-focus, or multi-focus lens. 
     The spectacle lenses  10  can be employed as corrective lens, such as myopia lens, hypermetropia lenses, presbyopic lens, or progressive lens. 
     Example 2 
       FIG. 2  is a cross-sectional view of the spectacle lens  10  in accordance with one exemplary embodiment. In the illustrated embodiment, the spectacle lens  10  includes a front surface  101  and a rear surface  102  opposite to the front surface  101 . A functional film  20  is formed on both the front surface  101  and the rear surface  102 . 
     The front surface  101  is can be a spherical surface, a non spherical surface, or a progressive surface. The back surface  102  can be a spherical surface, an aspheric surface, or a progressive surface. 
     The functional film  20  is select from a group consisting of a rigid film, an anti-smear film (to reduce fingerprints), an anti fogging film, a color film, a waterproof self cleaning film, an anti ultraviolet film, and an anti reflection film, or any combination thereof. That is, a rigid film, an anti-smear film, an anti fogging film, a color film, a waterproof self cleaning film, an anti ultraviolet film, and an anti reflection film can be successively formed on one surface of the lens main body  10  according to the functional requirements. 
     Example 3 
       FIG. 3  illustrates a spectacle lens  120  according to one embodiment. The spectacle lens  120  in  FIG. 3  is similar to the spectacle lens  110  in  FIG. 2 . The difference between the spectacle lens  120  and the spectacle lens  110  in  FIG. 2  is that the functional film includes an anti reflection film  201 . The anti reflection film  201  includes a plurality of micro-structures  301  spaced apart, and the size of the microstructure  301  is of nanometer magnitude. 
     In the illustrated embodiment, as shown in  FIG. 3 , a section of the microstructure  301  is triangular. A height of the microstructure  301  is in a range from 40 nm to 550 nm, a width of the microstructure  301  is in a range from 35 nm to 555 nm, and a period of the microstructures  301  is in a range from 10 nm to 650 nm. The scale of microstructure is no greater than the wavelength of light. 
     When the scale of the microstructure  301  is not larger than the wavelength of light, refraction of a light wave will present a continuous change on the surface of the microstructure (gradations of gradual index of refraction), and this continuous change can achieve the anti reflection characteristics and increase the light-absorption of optical structures. Thereby, the microstructures  301  are able to absorb light from all and any direction. The surface of the anti-reflection film  201  including a plurality of the microstructure  301  means that the spectacle lens  120  has super-hydrophobicity and self-cleaning properties, similarly to that of the lotus flower. 
       FIG. 4  illustrates a spectacle lens  130  according to one embodiment. The spectacle lens  130  in  FIG. 4  is similar to the lightweight spectacle lens  120  in  FIG. 3 . The difference between the lightweight spectacle lens  130  and the lightweight spectacle lens  120  in  FIG. 3  is that a section of the microstructure  303  is semicircular. 
       FIG. 5  illustrates a method for manufacturing lightweight and buoyant eyeglass according to one embodiment. The method is provided by way of example as there are a variety of ways to carry out the method  500 . The method  500  can begin at block  501 . 
     At block  501 , as shown in  FIG. 5 , an lightweight and buoyant eyeglass material is provided. A main component of the lightweight and buoyant eyeglass material is cyclic block copolymer. 
     In other embodiment, ultraviolet absorber is doped into the circular block copolymers to form ultraviolet absorbing properties, especially to form the spectacle lenses  10 . A weight ratio of the ultraviolet absorber in a total weight of the circular block copolymers and the ultraviolet absorbers is between 0.0003% and 5.8%. This allows the lightweight and buoyant eyeglass  100  to have strongly block ultraviolet light. 
     In other embodiment, a compound is doped into the circular block copolymers to increase strength and impact resistance of the lightweight and buoyant eyeglass  100 , and the compound has a mass percentage between about 0.0023% to about 47.64% of a total mass of the compound and cyclic block copolymer. 
     The compound is selected from a group consisting of graphene, carbon nanotube, polycarbonate, and any combination there lightweight and buoyant. 
     At block  502 , the lightweight and buoyant eyeglass material is melted to a viscous flow state. 
     At block  503 , the lightweight and buoyant eyeglass material of viscous flow state is injected into molding machines to mold semi-finished products of the spectacle frame and two spectacle lenses. 
     At block  504 , the semi-finished products of the spectacle frame and two spectacle lenses are annealed to eliminate internal stress. 
     At block  505 , quality of the spectacle lenses  10  are tested. 
     In a preferred embodiment, a functional film  20  is formed on at least one surface of the spectacle lens  10 . The functional film  20  is selected from a group consisting of a rigid film, an anti-smear film, an anti fogging film, a color film, a waterproof self cleaning film, and an anti reflection film, or any combination thereof. If the functional film comprises an anti reflection film  20 , the anti reflection film  20  is formed on the surface of the eyeglass  100  by a sol-gel method. 
     At block  506 , the spectacle frame and two spectacle lenses are assembled together to obtain the lightweight and buoyant eyeglass  100  of the disclosure. 
     The embodiments shown and described above are only examples. Therefore, many commonly-known features and details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will, therefore, be appreciated that the embodiments described above may be modified within the scope of the claims.