FRAME FOR EYEWEAR PROVIDING IMPROVED PROTECTION AGAINST IONISING RADIATION AND RADIOPROTECTIVE EYEWEAR COMPRISING SUCH A FRAME
A frame for eyewear for protecting against ionizing radiation, comprising a frontal portion extending laterally by the two lateral protective elements, and a device for maintaining the frame on the face of a user under the conditions under which it is worn, and characterized in that the lateral protective elements are integrally formed with the frontal portion and in that the frontal portion and the lateral protective elements are made of a radio-attenuation material. Further, eyewear for protecting against ionizing radiation comprising such a frame and to an assembly comprising this eyewear and a device for distributing weight.
1 . A frame for protective eyewear against ionising radiation, comprising a frontal part being laterally extended by two side protective elements, and a device for holding the frame on a user's face in wearing condition, wherein the side protective elements are as a single piece with the frontal part and the frontal part and the side protective elements are made of a radiation attenuating material comprising a polymer matrix in which a radiation attenuating load is dispersed.
2 . The frame for eyewear of claim 1 , wherein the radiation attenuating load comprises particles of at least one metal, the metal being lead, a rare earth, bismuth, antimony, tin, tungsten, barium, tantalum, or particles of an alloy or oxide thereof.
3 . The frame for eyewear of claim 2 , wherein the radiation attenuating load comprises particles of lead, lead oxide, erbium, erbium oxide, praseodymium, praseodymium oxide, a mixture of erbium oxide and praseodymium oxide, a mixture of erbium oxide, praseodymium oxide and bismuth oxide, or a mixture of bismuth oxide, tungsten oxide and lanthanum oxide.
4 . The frame for eyewear of claim 1 , wherein the radiation attenuating load comprises particles of bismuth or bismuth oxide.
5 . The frame for eyewear of claim 1 , wherein the polymer of the matrix is a cellulose acetate, a cellulose acetopropionate, a polyamide, a copolyamide, an epoxide resin or a polyurethane.
6 . The frame for eyewear of claim 1 , wherein the radiation attenuating material comprises from 20% to 95% by mass of the radiation attenuating load.
7 . The frame for eyewear of claim 1 , wherein the frontal part is configured to embed one or two optical glasses.
8 . The frame for eyewear of claim 1 , further comprising two supraorbital protective elements as a single piece with the frontal part and the side protective elements.
9 . The frame for eyewear of claim 1 , further comprising two infraorbital protective elements as a single piece with the frontal part and the side protective elements.
10 . The frame for eyewear of claim 1 , wherein the frame holding device comprises two arms hinged to the side protective elements or a headband connected to the side protective elements.
11 . The frame for eyewear of claim 1 , which further comprises a saddle bridge as a single piece with the frontal part or assembled to the frontal part.
12 . Protective eyewear against ionising radiation, comprising one or two radiation attenuating optical glasses embedded in the frame of claim 1 .
13 . The eyewear of claim 12 , wherein the radiation attenuating optical glass(es) is lead glass(es).
14 . The Eyewear of claim 12 , wherein the frame comprises a first attaching element which is configured to attach to a second attaching element comprised by a weight take-up device for eyewear when the eyewear and the weight take-up device are worn by a user, the eyewear being worn on the user's face and the weight take-up device being worn on the user's skull.
15 . The eyewear of claim 14 , wherein the first attaching element is a magnet assembled to the frame or integrated into the frame.
16 . An assembly comprising the radiation protective eyewear of claim 12 , and a weight take-up device, wherein the eyewear comprises a first attaching element, the weight take-up device comprises a second attaching element and wherein the first and second attaching elements are configured to attach to each other when the eyewear and the weight take-up device are worn by a user, the eyewear being worn on the user's face and the weight take-up device being worn on the user's skull.
17 . The assembly of claim 16 , wherein the first and second attaching elements are magnets with opposite polarity.
18 . The assembly of claim 16 , wherein the weight take-up device is configured to cover the top of the user's skull or to surround only the frontal part of the user's skull in wearing condition.