-
公开(公告)号:US20070146879A1
公开(公告)日:2007-06-28
申请号:US11474150
申请日:2006-06-22
IPC分类号: G03B21/56
CPC分类号: G03B21/62 , G02B3/08 , G02B5/045 , G02F1/133526 , G03B21/10
摘要: A Fresnel lens sheet used for an image display device is disclosed. The Fresnel lens sheet is provided with a first prism group in an area of a light entrance plane of the Fresnel lens sheet where the incident angle of light is equal to or more than a predetermined incident angle and a second prism group in an area of a light entrance plane of the Fresnel lens sheet where the incident angle of light is less than the predetermined value.
摘要翻译: 公开了一种用于图像显示装置的菲涅尔透镜片。 菲涅耳透镜片在菲涅尔透镜片的光入射面的区域中设置有第一棱镜组,其中入射角等于或大于预定入射角,并且第二棱镜组在 菲涅尔透镜片的光入射面,其入射角小于预定值。