| 摘要 |
The present invention is a translucent screen comprising a plurality of spherical lenses arranged in an orthohexagonal lattice structure or a tetragonal lattice structure on a two-dimensional plane, a supporting member disposed at the incident side of the spherical lenses, a diffusion plate which is disposed at the emission side of the spherical lenses where the surface at the side facing the spherical lenses is the diffusion surface, and a shield which connects the spherical lenses, defines the entrance aperture at the incident side and functions as a black matrix at the emission side, wherein the luminous flux entering diagonally is converted to the luminous flux which center is a direction approximately vertical to the main surface of the translucent screen, and are emitted.
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