Copyright Notice © 2009-2024 czvv.com 传众 版权所有
Hologram screen and a method of producing the same
申请公布号：US2003202228(A1)
申请号：US20030403851
申请日期：2003.03.31
申请公布日期：2003.10.30
发明人：TAKADA KENICHIRO;SHIOZAWA MASAHIRO
分类号：G02B5/32;G02B27/00;G02B27/01;(IPC1-7):G02B5/32
主分类号：G02B5/32
摘要：In a hologram screen for reproducing an image based on an output light obtained by scattering and diffusing an image light from an image projector, when a white light (image light) is projected on the hologram screen; and when a distance between two points at optional two points A and B on a surface of the hologram screen is given by 20 cm or less, and a value of the CIE 1976 chromaticity coordinate (u', v') at the point A is given by (u'A, v'A) and the value of the CIE 1976 chromaticity coordinate (u', v') at the point B is given by (u'B, v'B); the output light perpendicularly from the surface of the hologram screen has a color distribution in which a color difference Deltau'v' between two points A and B is derived from the following formula (1) and given by 0.06 or less, where, the formula (1) is expressed by, Deltau'v'=[(u'A-u'B)<2>+(v'A-vB)<2>]<1/2> (1) Further, the output light, which is output to a viewpoint defined by the following formula (2) from the surface of the hologram screen, has the color distribution in which a color difference Deltau'v' between two points A and B is derived from the above formula (1) and given by 0.01 or less, where, the formula (2) is expressed by, H/2L=0.1 (2) in the formula (2), L is a distance between the viewpoint and a center of the hologram screen, and H is a length of the hologram screen in the direction of the height.