With computer-controlled etching, the technology to create thin plastic sheets with thousands of microscopic ‘prism’ lenses that can magnify or diffract light can be made.
wɪð kəmpjˈuːɾɚkəntɹˈoʊld ˈɛtʃɪŋ, ðə tɛknˈɑːlədʒi tə kɹiːˈeɪt θˈɪn plˈæstɪk ʃˈiːts wɪð θˈaʊzəndz ʌv mˌaɪkɹəskˈɑːpɪk pɹˈɪzəm lˈɛnzᵻz ðæt kæn mˈæɡnᵻfˌaɪ ɔːɹ dᵻfɹˈækt lˈaɪt kæn biː mˈeɪd.