DYNAMIC HOLOGRAPHY FOCUSED DEPTH PRINTING DEVICE

    公开(公告)号:EP3295256A1

    公开(公告)日:2018-03-21

    申请号:EP16822727

    申请日:2016-12-22

    发明人: MULLINS BRIAN

    IPC分类号: G03H1/00 B29C67/00 G03H1/22

    摘要: A printing device (106) includes a laser source and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light Modulator). The printing device generates a laser control signal and a LCOS-SLM control signal. The laser source (110) generates a plurality of incident laser beams based on the laser control signal. The LCOS-SLM (112) receives the plurality of incident laser beams, modulates the plurality of incident laser beams based on the LCOS-SL M control signal to generate a plurality of holographic wavefronts (214,216) from the modulated plurality of incident laser beams. Each holographic wavefront forms at least one corresponding focal point. The printing device cures a surface layer or sub-surface layer (406) of a target material (206) at interference points of focal points of the plurality of holographic wavefronts. The cured surface layer of the target material forms a three-dimensional printed content.

    DISPLAY SYSTEM
    3.
    发明公开
    DISPLAY SYSTEM 审中-公开

    公开(公告)号:EP3295259A1

    公开(公告)日:2018-03-21

    申请号:EP17709777

    申请日:2017-03-03

    IPC分类号: G03H1/22 G03H1/08

    摘要: A display system comprising a data provider, a phase-only spatial light modulator (SLM) 701 and a second cylindrical lens 750. The data provider provides first data to the SLM, wherein the first data corresponds to a first cylindrical lens implemented as lensing data in holographic data supplied to the SLM. The first cylindrical lens has optical power in a first direction. The spatial light modulator receives the holographic data, wherein the spatial light modulator spatially-modulates the received light in accordance with the holographic data. The second cylindrical lens, which may be a physical lens, receives the spatially-modulated light from the spatial light modulator and performs a one dimensional Fourier transform of the received light in a second direction, orthogonal to the first direction. The arrangement is intended to reduce intense unwanted zero-order (DC order) light from the reconstructed image, such that it is limited to only part 707 of the holographic reconstruction plane 705.