Decorative optical display apparatus
Deflecting element having a switchable liquid crystalline materi
Deformable grating apparatus for modulating a light beam and inc
Device for calculating diffraction efficiencies of a...
Device for generating an array of light spots
Die for forming a micro-optical element, manufacturing method th
Diffracting optical element, and optical system and optical...
Diffraction element
Diffraction element and an optical multiplexing/demultiplexing d
Diffraction element and optical device
Diffraction element and optical pickup device
Diffraction element, optical head device including the...
Diffraction grating
Diffraction grating
Diffraction grating
Diffraction grating and method of making
Diffraction grating and method of manufacture
Diffraction grating and uses of a diffraction grating
Diffraction grating apparatus and method of forming a surface re
Diffraction grating array and display having a diffraction grati