发明名称 Rotating knob, variable image holographic display
摘要 A holographic display including a planar transparent light pipe (11) configured for rotation about a light pipe rotation axis that is orthogonal to the planar extent of the transparent light pipe and passes through a rotational center of the light, a multiple image hologram structure (13) having a plurality of holographic images attached to one side of the planar transparent light pipe, wherein the images are at different azimuthal angular positions on the light pipe about the light pipe rotation center, and a light source (17) for illuminating an input surface of the transparent light pipe such that an injected beam propagates within the light pipe to provide reconstruction illumination for a portion of the multiple image hologram structure. The azimuthal angular position of the transparent light pipe about the light pipe rotation axis determines which portions of the plurality of holographic images are reconstructed, and a mask (19) is provided for masking the light diffracted by the multiple image hologram structure.
申请公布号 US5764391(A) 申请公布日期 1998.06.09
申请号 US19960768486 申请日期 1996.12.18
申请人 RAYTHEON COMPANY 发明人 SMITH, RONALD T.
分类号 G03H1/26;(IPC1-7):G03H1/00;G01D11/28;G08B5/00 主分类号 G03H1/26
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