Beam-shaping element for optical radiation and a method for producing said element

摘要

A beam-shaping element comprises a carrier substrate ( 1 ) bearing a thin-layer metallization which is structured for shaping the beam of optical radiation. The thin-layer metallization includes at least two metallic layers ( 2, 3 ), which, upon impingement of the optical radiation ( 4 ), react with each other accompanied by a permanent change in color in response to a certain intensity and/or an irradiation period of the optical radiation ( 4 ).