| 摘要 |
A shield for protection against harmful radiation transmitted towards or emitted from a mobile phone (15) or a wireless telephone is configured as a laminate (3a, 3b, 3c, 3d), which consists of at least one plastic layer (3a), such as a layer of ABS plastic, PVC or resin plastic. On the outside of the plastic layer there is at least one layer of metal (3a, 3b, 3c), preferably three layers which are cu, zn and cr. The shield (1, 11) can be mounted on the antenna (14) of the mobile phone (15) or a wireless telephone. It can be configured in two parts (2, 3), where the one part (2) consists of a plate part (2) with a snap-lock (4) for clipping on to a mobile phone (15), in that the outwardly-extending plate part has longitudinal grooves (7a, 7b) which are arranged to co-operate with the edge parts (8a, 8b) of a second plate part (3). In a preferred embodiment, the shield is configured as one part (11) which consists of a plate part (12) with arcuate dimensions, corresponding to the outer dimensions of an antenna (14) on a mobile phone (15) or wireless telephone, in that from the one end of the plate part, two projecting lobes (13a, 13b) are provided which can grip around the antenna (14). With the invention, a shield is provided, which gives a reduction in the GSM 900 band, expressed in SAR (specific absorption rate), of approx. 97 % compared with the radiation, which is measured without a shield according to the invention. |
