A carrier and an apparatus for optical detection of a sample in a sample chamber includes en optical structure for refracting an input light beam into the adjacent sample chamber and for collecting an output light beam from light that originates in the sample chamber from the input light beam. Environmental conditions of the vehicle are determined. The colorable rubber compositions have sufficient properties to function as a reinforcing member in a shoe sole or automobile tire. A new portion of the digital image is displayed based at least in part on the received change and the transformation, where the new portion that is displayed has the same center point as the previously displayed portion. This changes the optical path of the light during use such that the light portion received by the at least one second fiber is very sensitive to the position of the membrane.