MASKS FOR HIGH QUALITY IMAGES FROM TOTAL INTERNAL REFLECTION HOLOGRAMS

摘要

In order to reduce or eliminate undesired fringe patterns occurring in images generated by total internal reflection holograms, the mask (20) is provided with an anti-reflection coating (19) on at least one of its underside surface (26) and top surface (16). An anti-reflection coating (19) provided on the underside surface (26) of the mask (20) may also increase the depth of focus of images generated by total internal reflection holograms.