METHOD FOR PRODUCTION OF A BAND WITH SEVERAL PARALLEL OPTICAL FIBRES

摘要

The invention relates to a method for the production of optical bands (11) with several parallel optical fibres (12). The surface of the optic fibres in said bands is treated such as to increase the optical damping in sections of the optic fibres. According to the invention, the generated damping may be reliably adjusted, whereby during (or after) the processing of the surfaces a measuring light is introduced into the fibre optic (12) and the light output at the other end of the band is measured by means of a sensor such as a CCD camera (17). Possible production errors can thus be compensated for during the production process, for example, by means of an increased process time for the optic fibre (12). Optical sensor bands can be produced by means of the above method for application in the bumpers of motor vehicles as recognition sensors for the impact of a pedestrian. Other applications in which the bending of a sensor band is to be determined by optical means are also envisaged.