发明名称 PROJECTION PICTURE DISPLAY
摘要 <P>PROBLEM TO BE SOLVED: To provide a small and high-luminance projection picture display. <P>SOLUTION: The projection picture display comprises: a liquid crystal display element for forming an optical image; a polarizer for polarizing a light that penetrates the liquid crystal display element; and a cooling system for cooling the polarizer at a temperature of 150&deg;C or less. When a value obtained by dividing a light flux amount [lm] of the projection picture display by a size [inch] of the liquid crystal display element is 4500&plusmn;10% [lm/inch], initial reflectivity of the polarizer is set at 3.7% or less. When the value obtained by dividing the light flux amount [lm] of the projection picture display by the size [inch] of the liquid crystal display element is 3000&plusmn;10% [lm/inch], the initial reflectivity of the polarizer is set at 7.7% or less. When the value obtained by dividing the light flux amount [lm] of the projection picture display by the size [inch] of the liquid crystal display element is 6000&plusmn;10% [lm/inch], the initial reflectivity of the polarizer is set at 0.7% or less. <P>COPYRIGHT: (C)2013,JPO&INPIT
申请公布号 JP2012242706(A) 申请公布日期 2012.12.10
申请号 JP20110114308 申请日期 2011.05.23
申请人 HITACHI CONSUMER ELECTRONICS CO LTD 发明人 SOMEYA YUSAKU;INUI MASAAKI;HIRATA KOJI
分类号 G03B21/00;G02B5/30;G02B27/28;G02F1/13;G02F1/1335;H04N5/74 主分类号 G03B21/00
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