Graded diffuser

• Main Authors: BOYD GARY T, JOHNSON NICHOLAS A, BALTS COREY D, PHAM TRI D, ETZKORN STEPHEN J, MERRITT SARA S, ARONSON JOSEPH T, PHAM OANH V, ZHANG HAIYAN
• Format: Patent
• Language: Chinese; English
• Published: 02.01.2018
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

A diffuser including opposing structured first and second major surfaces is described. The first major surface includes a first plurality of surface structures providing a uniform first haze. The second major surface includes a first portion adjacent an edge and a second portion adjacent the first portion. The first portion includes a first region and a second region between the first region and the second portion. The second major surface includes a second plurality of surface structures providing a uniform second haze over the second portion and providing a third haze in the first portion. The third haze in the first region is higher than the second haze, and the third haze in the second region is monotonically decreasing. The second portion has a surface area of at least 90 percent of asurface area of the second major surface. 本发明描述了包括相背对的结构化第主表面和结构化第二主表面的漫射体。第主表面包括提供均匀的第雾度的多个第表面结构。第二主表面包括与边缘相邻的第部分和与该第部分相邻的第二部分。第部分包括第区域和位于第区域与第二部分之间的第二区域。第二主表面包括在第二部分上提供均匀的第二雾度并且在第部分中提供第三雾度的多个第二表面结构。第区域中的第三雾度大于第二雾度，并且第二区域中的