Abstract: An eyewear device is presented allowing for a frame, a plurality of temple elements, and a plurality of joining apparatuses. The above-listed elements of the eyewear device are preferably composed of one of a plurality of precious metal alloys. In certain aspects, the frame may be composed of the same precious metal alloys as the plurality of temple elements; in alternate aspects, the frame and temple elements may be composed of different precious metal alloys. The eyewear device may be or comprise a plurality of precious metal alloys, including but not limited to gold, silver and/or palladium. Further presented is a joining apparatus, wherein the elements of the joining apparatus are composed of a precious metal alloy which is harder and/or has a higher specific gravity than that of the frame and temple elements.

Abstract: A method for laminating a functional film on to an optical base element and a tri-layer adhesive system for use in the method. The tri-layer adhesive includes a first latex adhesive layer disposed on the functional film and a second latex adhesive layer disposed on the optical base element. An HMA layer is disposed in between the latex layers to form a tri-layer adhesive to permanently retain the functionalized film on the optical base element. The method includes first coating a latex adhesive on the functional film and second coating a latex adhesive on the optical base element. An HMA is then coated on to one of the dried latex adhesive layers. The film is hot pressed on to the optical base element with the HMA sandwiched in between the latex layers to form a laminated optical device.

Abstract: A circumferentially elongated flat recessed portion (13) is formed in the outer edge surface (2c-b) of a spectacle lens (2). The distal end of a lens holding portion (9) is bent in a J shape to form an insertion portion (9A). The insertion portion (9A) is inserted into the recessed portion (13) and fixed in position using an adhesive (15). Thus, the spectacle lens (2) can be reliably held by the lens holding portion (9) with strong bonding between the spectacle lens (2) and the lens holding portion (9) free from the possibility of a reduction in bonding strength or fall-off upon twisting.

Abstract: Rimless eyeglasses are provided, which do not produce loosening in a connecting area between an eyeglass lens and a lens fixing portion, and which also allows for the easy attachment or removal of a lens. The rimless eyeglasses include eyeglass lenses and as eyeglass components, a metallic end-piece member and a metallic bridge member, having a lens fixing portion fixedly attached to the eyeglass lens and a connecting portion connected to a temple or a bridge. The lens fixing portions of the metallic end-piece member and the metallic bridge member have cylindrical leg portions, each inserted into a lens hole formed in the eyeglass lens. Spiral-shaped grooves are formed in the outer peripheral faces of the leg portions. An adhesive is injected into the spiral-shaped grooves.

Abstract: The spectacle frame has two branches each suitable to be mounted on one distinct from two organic lenses by one of its ends forming a hinge and a bridge suitable to be mounted between the two lenses, a portion of the branches and/or of the bridge including an attachment element penetrating into a blind hole made in the edge of the lenses and bonded in place by an adhesive. The attachment element affects only one point of the edge and is formed of a tongue having a zone intended to penetrate into the blind hole, the penetration zone being of polygonal cross section and including at least one relief for anchoring in the adhesive.

Abstract: Spectacles comprise a bridge connecting two lenses, and side pieces mounted on the lenses for carrying spectacle bows, the lenses being connected to the side pieces and to the bridge by an attachment which comprises a U-shaped wire loop which is inserted into a bore in a lens and is secured by a plug in such manner that the wire is urged into positive engagement with axially extending grooves in a wall of the bore.

Abstract: Semi-rimless or rimless eyeglasses wherein the rimless portion comprises a flexible strand, at least one end of which is threaded through one or more holes in an anchoring plate or upper rim portion and mechanically bonded thereto, thereby securing the lens within the frame.

Abstract: A glasses with bridges and temples which are fixed to lens frames, without depending upon deposition. Bridges and temples of this glasses can be changed easily according to one's taste because they are not deposited to lens frames but are fixed to lens frames through the medium of sleeves and other means.

Abstract: This specification discloses a spectacle frame of titanium or titanium alloy having at least one location a brazed portion of titanium or titanium alloy joined with titanium or titanium alloy, or of titanium or titanium alloy joined with other metal, characterized in that silver-zinc alloy comprising 70-95% by weight of silver and 5-30% by weight of zinc is used as the brazing filler metal material for brazing.