378 results about "Uv protection" patented technology

The invention relates to novel optical elements having improved UV protection. The optical element comprises a light adjustable optical element with a UV absorbent layer applied to at least one surface of the optical element. The invention is particularly useful in light adjustable intraocular lenses.

A base sheet of transparent polycarbonate material has a formed shape including a center portion and a peripheral portion. The center portion is formed by a non-contact forming operation occurring at a temperature above the glass transition temperature and below the melt temperature of the transparent polycarbonate material, thereby resulting in the center portion of the base sheet being free of visual distortion. A top coat layer is disposed over the base sheet. The top coat layer has a greater resistance to abrasion than the polycarbonate material and provides UV protection to the base sheet. A primer coating is disposed between the base sheet and the top coat layer to facilitate bonding therebetween. The peripheral portion can have a shape created by a contact forming operation occurring at a temperature above the glass transition temperature and below the melt temperature of the polycarbonate material.

A fabric system for producing at least a woven fabric of controlled modulus or elongation in the MD or warp axis, has a core layer which is the main structural element, and may have one or more woven cover fabrics adhesively bonded with an off axis configuration to one or both sides of the core layer. In a preferred embodiment the core fabric is covered with at least one off axis fabric on both sides. The cover fabrics may also have resin or film top layers laminated or coated on their outside surfaces, for mechanical performance or UV protection or both.

The object of this invention is to provide a UV protective powder, and a cosmetic preparation in which the dispersibility of metal oxide is kept at a high level, and the UV protection activity and transparency of the preparation are satisfactorily maintained.A metal oxide / silica composite wherein metal oxide particles whose primary particle diameter is 1-1000 nm are co-dispersed finely with silica particles, and the metal oxide particles exist substantially as primary particles in the composite. The composite is preferably obtained by mixing (1) a dispersion comprising a silica sol where silica particles have a primary particle diameter of 1-150 nm, and (2) fine particles of metal oxide whose primary particle diameter is 1-1000 nm, or a sol of the same metal oxide, and the metal oxide existing as fine particles or a sol preferably consists of one, or two or more selected from a group consisting of titanium oxide, zinc oxide and cerium oxide. Also a cosmetic preparation comprising thereof is provided.