| http://www.w3.org/ns/prov#value | - ch the laser light for illuminating the spatial light modulator means is conveyed; and optical system means for forming an image of the display superposed on the field of view of the wearer of the helmet, the optical system means includingan objective system to produce an intermediate image of the display, the intermediate image lying in a plane, means, including a holographic collimating and comb
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