Abstract: Provided herein is a flexible hinge comprising a tension spring (1), a sliding element (2), a sliding element guide (3), a spring tensioner (4), a stop (5) for stopping the longitudinal movement of the sliding element (2), a fastener (6), and a bearing shield (7). The flexible hinge disclosed herein can be installed in a pair of eyeglasses comprising a pair of temples and a frame front so as to connect the temples to the frame front. The flexible hinge can be fixed to the temple with the stop (5) at one end and to the frame front with the fastener (6) at another end. The fastener (6) is used to engage sliding element (2) with the bearing shield (7). The sliding element guide (3) enables longitudinal movement of the sliding element (2) along the x-axis and prevents its movement along other axes.

Abstract: The present invention relates to a thermoplastic laminate for an eyewear, a decorative part comprising the thermoplastic laminate and a preparation process therefor. In particular, during the preparation of the laminate, a high frequency welding machine is used for bonding thermoplastic layers. The present invention uses a high frequency welding machine for the instant welding of the thermoplastic layers. Good bonding strength exists between different layers. Further, the patterns of the core layer are intact, and have high-definition images. The patterns are located in the core layer, not affected by external environmental factors, and not easily abraded. Further, multiple surfaces of the part for an eyewear have patterns, increasing the beautiful appearance of the part for an eyewear, and meeting the requirements of customers to the largest extent.

Abstract: The present invention relates to a thermoplastic laminate for an eyewear, a decorative part comprising the thermoplastic laminate and a preparation process therefor. In particular, during the preparation of the laminate, a high frequency welding machine is used for bonding thermoplastic layers. The present invention uses a high frequency welding machine for the instant welding of the thermoplastic layers. Good bonding strength exists between different layers. Further, the patterns of the core layer are intact, and have high-definition images. The patterns are located in the core layer, not affected by external environmental factors, and not easily abraded. Further, multiple surfaces of the part for an eyewear have patterns, increasing the beautiful appearance of the part for an eyewear, and meeting the requirements of customers to the largest extent.

Abstract: The present invention relates to a thermoplastic laminate for an eyewear, a decorative part comprising the thermoplastic laminate and a preparation process therefore. In particular, during the preparation of the laminate, a high frequency welding machine is used for bonding thermoplastic layers. The present invention uses a high frequency welding machine for the instant welding of the thermoplastic layers. Good bonding strength exists between different layers. Further, the patterns of the core layer are intact, and have high-definition images. The patterns are located in the core layer, not affected by external environmental factors, and not easily abraded. Further, multiple surfaces of the part for an eyewear have patterns, increasing the beautiful appearance of the part for an eyewear, and meeting the requirements of customers to the largest extent.

Abstract: Provided herein are methods of preparing eyewear products made of a cellulose ester, a nylon or a polyester by simple and inexpensive single-nozzle or multi-nozzle 3D printers, wherein the eyewear products have a continuous range of colors or a gradual color change. Also provided herein are eyewear products made of a cellulose ester, a nylon or a polyester prepared by the methods disclosed herein.

Abstract: The present invention relates to a thermoplastic laminate for an eyewear, a decorative part comprising the thermoplastic laminate and a preparation process therefore. In particular, during the preparation of the laminate, a high frequency welding machine is used for bonding thermoplastic layers. The present invention uses a high frequency welding machine for the instant welding of the thermoplastic layers. Good bonding strength exists between different layers. Further, the patterns of the core layer are intact, and have high-definition images. The patterns are located in the core layer, not affected by external environmental factors, and not easily abraded. Further, multiple surfaces of the part for an eyewear have patterns, increasing the beautiful appearance of the part for an eyewear, and meeting the requirements of customers to the largest extent.

Abstract: The present invention relates to dual-lens eyeglasses including an eyeglass frame and two lens units permanently installed on the eyeglass frame. Each lens unit includes two lenses arranged in optical alignment with each other. The lenses can be optical lenses or sunglass lenses. The optical lenses can be selected from known lenses such as corrective lenses, myopic corrective lenses, reading glasses lenses, progressive lenses, etc. The sunglass lenses can be selected from polarized lenses, tinted lenses, or photochromic lenses. Without the use of sub-frames, two lens units are permanently installed on eyewires of the eyeglass frames, enhancing the integration effect of the eyeglass frames. In addition, each lens is directly fixed and installed on the eyeglass frames, so that the installation is reliable and the lenses will not fall off easily. Furthermore, the lenses can be easily installed on full-rim, half-rim or rimless eyeglass frame.

Abstract: A laminate with internal decorative pattern for eyeglass frames, formed by the application of heat and pressure comprising: a plurality of core layers of thermoplastic sheets printed with patterns by transfer printing; a first overlay layer of thermoplastic sheet; and a second overlay layer of thermoplastic sheet; wherein the core layers are sandwiched between the first overlay layer and the second overlay layer; the core layers may further enclose three dimensional articles or fluids for decorative or functional purposes. The process for manufacturing the laminate includes: preparing a plurality of core layers, a first overlay layer and a second overlay layer from thermoplastic sheets; printing patterns on the core layers by transfer printing; layering from top to bottom the first overlay layer, the core layers and second overlay layer; applying to the layer of sheets a temperature of 0° C. to 300° C.

Abstract: Disclosed herein are eyeglass frames and eyeglass frame kits made from a polymer composition comprising PCTG, and eyeglasses comprising a pair of lenses mounted on the eyeglass frames or eyeglass frame kits disclosed herein. The polymer composition disclosed herein may optionally comprise one or more additives such as colorants and fillers.

Abstract: A spectacle case including a housing assembly, a spectacle compartment, and at least one accessory compartment assembly. The housing assembly defines a housing space for storing a pair of spectacles therein. The housing space comprises a spectacle space and a remaining dead space. The spectacle compartment occupies the spectacle space defining an area that is reserved for occupation of the spectacle when the spectacle is received within the housing assembly. The at least one accessory compartment assembly occupies at least a portion of the dead space. The accessory compartment assembly includes at least one accessory compartment separation element for providing a desired separation of the spectacle compartment and the accessory compartment assembly.

Abstract: A laminate with internal decorative pattern for eyeglass frames, formed by the application of heat and pressure comprising: a plurality of core layers of thermoplastic sheets printed with patterns by transfer printing; a first overlay layer of thermoplastic sheet; and a second overlay layer of thermoplastic sheet; wherein the core layers are sandwiched between the first overlay layer and the second overlay layer; the core layers may further enclose three dimensional articles or fluids for decorative or functional purposes. The process for manufacturing the laminate includes: preparing a plurality of core layers, a first overlay layer and a second overlay layer from thermoplastic sheets; printing patterns on the core layers by transfer printing; layering from top to bottom the first overlay layer, the core layers and second overlay layer; applying to the layer of sheets a temperature of 0° C. to 300° C.

Abstract: A method for securing a first member (30) to a second member (20) of eyeglasses, the method comprising: removing a first portion from the first member (30) to form a cut-out portion (31) on the first member (30); inserting the first member (30) into the second member (20) such that at least the cut-out portion (31) is covered by the second member (20); and applying an external force on the second member (20) to cause the second member (20) to deform against the first member (30) where a portion of the second member (20) is deformed into the cut-out portion (31) to mechanically secure the first member (30) to the second member (20).

Abstract: A lens includes a viewing area having a first optical power and a blended area located between the viewing area and an edge of the lens. The blended area includes a plurality of at least partially annular regions. Each of the regions has a different optical power lower than the first optical power of the viewing area. The innermost region includes a highest optical power among the regions, and each subsequent outer region has a gradually lower optical power.

Abstract: A spectacle case including a housing assembly, a spectacle compartment, and at least one accessory compartment assembly. The housing assembly defines a housing space for storing a pair of spectacles therein. The housing space comprises a spectacle space and a remaining dead space. The spectacle compartment occupies the spectacle space defining an area that is reserved for occupation of the spectacle when the spectacle is received within the housing assembly. The at least one accessory compartment assembly occupies at least a portion of the dead space. The accessory compartment assembly includes at least one accessory compartment separation element for providing a desired separation of the spectacle compartment and the accessory compartment assembly.