The method of decreasing the effective pixel pitch in electro- holographic displaying and the electro- holographic display which includes the effective pixel pitch which is decreased

摘要

Electro- holographic display system 500, the coherent illuminant the spatial optical modulator which modulates 130 which generates the coherent Cori mate light beam and the light beam (SLM) the picture surface the optical unit it includes with 350 in the optical route with 580 where 120 and the holographic picture is projected and SLM120 and 450. Convex lens of pair and 470 the optical unit 350 which is possible to include 460 and 450 operates, in order to make the pitch 220 of the pixel 210 of SLM120 DECREASE effectively. Because of this, as for electro- holographic display system 500, when pixel pitch 220, including SLM120 which the pixel pitch which sometimes is needed because of the diffraction range of desire compared to becomes large even, as for displaying the range of desire of diffraction it becomes possible.