A projection screen (110, 110-1, 110-2) includes a plurality of passive elements (200) each having a sidewall surrounding a surface, wherein said sidewall is configured to attenuate light.
申请公布号
GB2434655(A)
申请公布日期
2007.08.01
申请号
GB20070009243
申请日期
2005.08.31
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人
WILLIAM J ALLEN;JOHN M KOEGLER III;ANURAG GUPTA;L CHRIS MANN
