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抗闪烁抗闪光透明塑料  发帖心情 Post By:2015/9/10 23:34:00 [只看该作者]


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Anti-glare and Anti-sparkle Transparent Structures

 / Feb 11, 2014
A common problem that arises when viewing an object through an intervening transparent medium is glare. Glare may be defined as the substantially specular reflection of ambient light on the viewer side of the transparent medium from one or more surfaces of the transparent medium. Thus, glare light travels an optical path that extends from the source of the ambient light to the surface of the transparent medium and then to the viewer, with the angle of incidence being substantially the same as the angle of reflection. Object light, on the other hand, travels from the object through the transparent medium to the viewer. Glare makes it difficult to view an object through the intervening transparent medium when the optical paths of the glare light and the object light substantially overlap in the region between the transparent medium and the viewer. Consequently, anti-glare surfaces are often applied to the viewer-side surface of the transparent medium to avoid or reduce the amount of glare. Such anti-glare surfaces are typically formed by providing some degree of roughness that spreads (i.e., scatters or diffuses) the light reflected by the surface over a certain angle. Typical anti-glare surfaces used in display applications comprise a coated or structured polymeric film (often a polarizing film) that is directly laminated to the surface of the front glass sheet forming the display (e.g., a liquid-crystal display (LCD)). The ideal parameters and processes used for anti-glare polymeric coatings are not necessarily the same as the ideal parameters used for a protective anti-glare cover glass. One reason for this is the anti-glare surface on a protective cover glass typically must be placed at a larger optical distance from the image-forming plane of the display device than would an antiglare polymeric coating. A major shortcoming of anti-glare and anti-sparkle surfaces is when applied to an intervening transparent medium disposed between the user and the object; they distort the optical path of the transmitted light. For example, conventional anti-glare and anti-sparkle surfaces relying on surface roughness tend to diffuse the object light, which makes the object look diffuse and thus less clear. The farther the object is located from the transparent medium, the more distorted the object appears when viewed through the transparent medium. Thus, there is a need for anti-glare and anti-sparkle surfaces having reduced optical distortion for object light when applied to a transparent medium. This invention provides an anti-glare light-transmitting structure that reduces an amount of glare from reflected ambient light and that has reduced optical distortion for light transmitted through the transparent material. The anti-glare property is achieved by the proper selection of materials having specific refractive indices to that the transmitted light is slightly distorted.



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  发帖心情 Post By:2015/9/10 23:46:00 [只看该作者]

 Glare may be defined as the substantially specular reflection of ambient light on the viewer side of the transparent medium from one or more surfaces of the transparent medium. Thus, glare light travels an optical path that extends from the source of the ambient light to the surface of the transparent medium and then to the viewer, with the angle of incidence being substantially the same as the angle of reflection. Object light, on the other hand, travels from the object through the transparent medium to the viewer. Glare makes it difficult to view an object through the intervening transparent medium when the optical paths of the glare light and the object light substantially overlap in the region between the transparent medium and the viewer. 

当透过一个透明介质观察一个物体时,常出现的问题是闪烁。闪烁可以定义为透明介质观察者一方的周围光线大量的镜面反射,反射的表面可以是透明介质的一个或几个表面。因此,周围光源的光线透通过一个光学路径投射到透明介质的表面,然后再反射到观察者眼睛中。本质上入射角和反射角是一样的。另一方面,物体光线穿过透明介质到达观察者。当闪烁光和物体光的路径在透明介质与观察者之间的区域交叠时,我们难以透过透明介质观察到物体。


[此贴子已经被作者于2015-9-11 20:23:20编辑过]

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  发帖心情 Post By:2015/9/11 21:50:00 [只看该作者]

 Consequently, anti-glare surfaces are often applied to the viewer-side surface of the transparent medium to avoid or reduce the amount of glare. Such anti-glare surfaces are typically formed by providing some degree of roughness that spreads (i.e., scatters or diffuses) the light reflected by the surface over a certain angle. Typical anti-glare surfaces used in display applications comprise a coated or structured polymeric film (often a polarizing film) that is directly laminated to the surface of the front glass sheet forming the display (e.g., a liquid-crystal display (LCD)).

因此,抗闪烁表面常常应用于透明介质的观察者一面,以避免或减少闪烁程度。这样的抗闪烁表面一般成型方法是,提供一定程度的粗糙度,以散射该表面以某个角度反射的光线。显示器上使用的典型的抗闪烁表面,包括一个涂层或结构性聚合物薄膜(常常是一个偏振膜),它直接层合到前玻璃板的表面,从而做成显示器(例如液晶显示器(LCD))。

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  发帖心情 Post By:2015/9/11 22:00:00 [只看该作者]

The ideal parameters and processes used for anti-glare polymeric coatings are not necessarily the same as the ideal parameters used for a protective anti-glare cover glass. One reason for this is the anti-glare surface on a protective cover glass typically must be placed at a larger optical distance from the image-forming plane of the display device than would an antiglare polymeric coating. A major shortcoming of anti-glare and anti-sparkle surfaces is when applied to an intervening transparent medium disposed between the user and the object; they distort the optical path of the transmitted light. 

用于抗闪烁聚合物涂层的理想参数和工艺不必与抗闪烁罩盖玻璃的理想参数一模一样。这样做的原因是,与抗闪烁聚合物涂层比较,保护性罩盖玻璃上的抗闪烁表面必须放到与显示器成像平面更远的一个距离上。抗闪烁和抗闪光表面的一个缺点是,当这种方式应用于放在使用者与物体之间的透明介质时,这些表面会扭曲透射光线的穿过路径。

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  发帖心情 Post By:2015/9/11 22:14:00 [只看该作者]

For example, conventional anti-glare and anti-sparkle surfaces relying on surface roughness tend to diffuse the object light, which makes the object look diffuse and thus less clear. The farther the object is located from the transparent medium, the more distorted the object appears when viewed through the transparent medium. Thus, there is a need for anti-glare and anti-sparkle surfaces having reduced optical distortion for object light when applied to a transparent medium. This invention provides an anti-glare light-transmitting structure that reduces an amount of glare from reflected ambient light and that has reduced optical distortion for light transmitted through the transparent material. The anti-glare property is achieved by the proper selection of materials having specific refractive indices to that the transmitted light is slightly distorted.

例如,传统的抗闪烁和抗闪光表面,依赖于表面粗糙度,倾向于使物体光线发生扩散,这使得物体看起来弥散并因此变得不清晰。当透过透明介质观察时,物体距离透明介质的距离越远,对物体的光学扭曲就越多。本发明提供一个抗闪烁透光结构,它可以减少来自于反射的周围光线的闪烁程度,并减少光线透过透明材料时的光学扭曲。解决抗闪烁的方法是,合理选择材料,使之具有特定的折光指数,它对透过光线具有较少的扭曲。

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