Holographic optical devices
A holographic optical device (2) includes a light-transmissive substrate (2a), a first holographic optical element (Hs), and a second holographic optical element (Hr) that is laterally disposed on the substrate from the first holographic optical element. At least one of the holographic optical eleme...
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| Zusammenfassung: | A holographic optical device (2) includes a light-transmissive substrate (2a), a first holographic optical element (Hs), and a second holographic optical element (Hr) that is laterally disposed on the substrate from the first holographic optical element. At least one of the holographic optical elements is a complex diffraction granting that can handle a multiplicity of plane and /or spherical waves arriving from a range of angles, and having a range of wavelengths. Applications for the device include a wavelength division multiplexer/demultiplexer, an image reconstructor, a beam expander/compressor, and a visor/head-up display. A holographic optical device (2) includes a light-transmissive substrate (2a), a first holographic optical element (Hs), and a second holographic optical element (Hr) that is laterally disposed on the substrate from the first holographic optical element. At least one of the holographic optical elements is a complex diffraction granting that can handle a multiplicity of plane and /or spherical waves arriving from a range of angles, and having a range of wavelengths. Applications for the device include a wavelength division multiplexer/demultiplexer, an image reconstructor, a beam expander/compressor, and a visor/head-up display. |
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