首页> 外国专利> FRESNEL BASE SHEET, FRESNEL LENS SHEET, TRANSMISSION TYPE SCREEN, AND REAR PROJECTION TYPE DISPLAY APPARATUS

FRESNEL BASE SHEET, FRESNEL LENS SHEET, TRANSMISSION TYPE SCREEN, AND REAR PROJECTION TYPE DISPLAY APPARATUS

机译：菲涅尔底片，菲涅尔透镜片，透射型屏幕和后投影型显示设备

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摘要

PPROBLEM TO BE SOLVED: To provide a Fresnel base sheet capable of reducing uneven brightness and irregular color caused by polarization characteristics of video light and double refraction of a Fresnel base sheet, to provide a Fresnel lens sheet using the Fresnel base sheet, and to provide a transmission type screen and a rear projection type display apparatus. PSOLUTION: By using a member satisfying an expression of π-π/2≤R≤π+π/2, provided that the double refraction phase difference of the Fresnel base sheet 111 is expressed by R, uneven brightness and irregular color in the transmission type screen 100 caused by the polarization characteristics of the image light and the double refraction of the Fresnel base sheet 11 can be reduced, then, a rear projection television 1 of high image quality can be provided. PCOPYRIGHT: (C)2007,JPO&INPIT

机译：

要解决的问题：提供一种菲涅耳基片，该菲涅耳基片能够减少由视频光的偏振特性和菲涅耳基片的二次折射引起的亮度不均匀和颜色不均匀，从而提供使用菲涅耳基片的菲涅耳透镜片，并且提供透射型屏幕和背投型显示设备。

解决方案：通过使用满足表达式π-π/ 2和R＆amp;π+π/ 2的构件，假设菲涅耳基片111的双折射相差由R表示，不均匀。可以减小由图像光的偏振特性和菲涅耳基片11的双折射引起的透射型屏幕100中的亮度和不规则颜色，然后，可以提供高图像质量的背投电视1。

版权：（C）2007，日本特许厅＆INPIT 展开▼

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公开/公告号JP2006349962A

专利类型
公开/公告日2006-12-28

原文格式PDF
申请/专利权人 DAINIPPON PRINTING CO LTD;
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申请/专利号JP20050175709
发明设计人 KASHIWAGI TAKESHI;KODAMA DAIJIRO;
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申请日2005-06-15
分类号G02B3/08;G03B21/62;
国家 JP
入库时间 2022-08-21 21:09:19

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