We can find diffractive optics in increasingly many applications which are either completely based on diffraction phenomena or for which the diffraction solution is remarkably more compact, light-weight, or cheaper than its alternatives.The 2012 meeting in Delft includes a focus session on Diffraction Optics in the High-Tech Industry. This session gathers scientists and engineers working in the field of diffractive optics in industry and those in academy that work on industrial problems. The Topical Meeting will give attendees a wide picture of diffractive optics, from fundamental modelling of light-matter interaction to design techniques and from fabrication techniques to novel applications.This meeting will be the eighth in a series. Previous meetings took place in Savonlinna (1997), Jena (1999), Budapest (2001), Oxford (2003), Warsaw (2005), Barcelona (2007) and Koli (2010).