发明授权
- 专利标题: Low reflectivity contrast enhancement filter
- 专利标题(中): 低反射率对比度增强滤镜
-
申请号: US212945申请日: 1998-12-16
-
公开(公告)号: US6144479A公开(公告)日: 2000-11-07
- 发明人: Paul S. Lugg , Kenton D. Budd , John E. Bailey , Matthew H. Frey , Scott G. Theirl
- 申请人: Paul S. Lugg , Kenton D. Budd , John E. Bailey , Matthew H. Frey , Scott G. Theirl
- 申请人地址: MN St. Paul
- 专利权人: 3M Innovative Properties Company
- 当前专利权人: 3M Innovative Properties Company
- 当前专利权人地址: MN St. Paul
- 主分类号: G02B5/28
- IPC分类号: G02B5/28 ; G02B1/11 ; G02F1/15 ; G02F1/157 ; H01J29/89 ; H04N5/72 ; G02F1/153 ; G02B1/10 ; G02B5/22
摘要:
A low reflectivity, variable attenuation contrast enhancement filter having a total visible light reflectance of less than about 2.0% when measured with light incident to the first outer major surface. The contrast enhancement filter has a first layer(s) for providing antireflection, the first layer(s) defining the first outer major surface; a variable attenuation element interposed between the first major outer surface and the second major outer surface; element(s) for providing fixed attenuation interposed between the variable attenuation element and the first major outer surface; and at least one substrate.
公开/授权文献
- US5468386A Filter assembly and preassembled drain valve unit therefor 公开/授权日:1995-11-21
信息查询