Digital pixel cryptogram in e-beam holography
Tianji Wang, Yaotang Li, Shining Yang, Hongan Feng, Shichao Zhang, Shaowu Fan, Nai-Keng Bao, Wai-Him Wong, Hau Ping Chan, Po Sheun Chung · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2000
A digital pixel cryptogram technology using e-beam holography is described in this paper. The cryptogram is generated by an electronic beam lithography system and it can be applied to fabrication of embossing hologram for anti-counterfeiting and security.