  We demonstrate visible and near-IR image projection via non-absorbing,
multi-level Broadband Diffractive-Optical Elements (BDOEs) in 1 or more planes.
By appropriate design of the BDOE topography, we experimentally demonstrate:
(1) different images in different spectral bands; (2) different images in
different image planes; (3) image magnification by changing the distance
between the illumination source and the BDOE; (4) completely flat BDOE via an
index-contrast top-coating; and (5) reflective BDOEs. All of these are
accomplished with broadband illumination. Furthermore, the BDOEs are highly
efficient, versatile and can be inexpensive mass manufactured using
imprint-based replication techniques.
