NON-PERIODIC GRATING REFLECTORS WITH FOCUSING POWER AND METHODS FOR FABRICATTING THE SAME
摘要
Aspects of the present invention are directed to flat sub-wavelength dielectric gratings that can be configured to operate as mirrors and other optical devices. In one aspect, a grating layer (102) has a planar geometry and is configured with lines (206,207). The lines widths, line thicknesses and line period spacings (208) are selected to control phase changes in different portions of a beam of light reflected from the grating such that the phase changes collectively produce a desired wavefront shape in the beam of light reflected from the grating.
申请公布号
EP2454619(A1)
申请公布日期
2012.05.23
申请号
EP20090847443
申请日期
2009.07.17
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人
FATTAL, DAVID, A.;LI, JINGJING;BEAUSOLEIL, RAYMOND, G.;FIORENTINO, MARCO