发明名称 Visual advertising apparatus for gateway
摘要 A visual advertising apparatus for a gateway is disclosed. The apparatus includes a screen which includes a reflecting surface having a reflectance of 5% to 40% and reflecting lines formed on the reflecting surface in either a vertical or horizontal direction, the reflecting lines having a reflectance of 0.5% to 20%, and a projector for projecting light to the screen. Accordingly, the brightness of the screen is increased by five to forty times, viewers can see the clear image while moving around within the extended vertical and horizontal viewing angles of 30° to 4.5°, and the weight of the screen and the projector can be reduced, which makes it possible to install the large screen.
申请公布号 US2008079908(A1) 申请公布日期 2008.04.03
申请号 US20060540521 申请日期 2006.10.02
申请人 CHOI HAE-YONG 发明人 CHOI HAE-YONG
分类号 G03B21/14 主分类号 G03B21/14
代理机构 代理人
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