Optical information carrier containing bragg reflectors

摘要

The invention refers to an optical information carrier ( 1 ) for carrying information to be read out by means of an optical beam ( 9 ) having at least one information layer ( 6 ). It is an object of the invention to provide information carriers ( 1 ) with improved collection efficiency. To achieve this object the at least one information layer ( 1 ) contains Bragg reflectors for reflecting light of the optical beam ( 9 ), when said Bragg reflector is heated above a reflectance threshold temperature by said optical beam.