2711P-RDB7C 亿佳似春风

从技术原理角度来讲，触摸屏是一套透明的坐标定位系统，首先它保证是透明的，因此它通过材料科技来解决透明问题，像数字化仪、写字板、电梯开关，它们都不是触摸屏；其次它是坐标，手指摸哪就是哪，不需要第二个动作，不像鼠标，是相对定位的一套系统，我们可以注意到，触摸屏软件都不需要光标，有光标反倒影响用户的注意力，因为光标是给相对定位的设备用的，相对定位的设备要移动到一个地方首先要知道身在何处，往哪个方向去，每时每刻还需要不停的给用户反馈当前的位置才不至于出现偏差。这些对采取坐标定位的触摸屏来说都不需要；再其次就是能检测手指的触摸动作并且判断手指位置。 

透明特性

透明，它直接影响到触摸屏的视觉效果。透明有透明的程度问题，红外线技术触摸屏和表面声波触摸屏只隔了一层纯玻璃，透明可算佼佼者，其它触摸屏这点就要好好推敲一番，“透明”，在触摸屏行业里，只是个非常泛泛的概念，很多触摸屏是多层的复合薄膜，仅用透明一点来概括它的视觉效果是不够的，它应该至少包括四个特性：透明度、色彩失真度、反光性和清晰度，还能再分，比如反光程度包括镜面反光程度和衍射反光程度，只不过触摸屏表面衍射反光还没到达CD 盘的程度，对用户而言，这四个度量已经基本够了。 

由于透光性与波长曲线图的存在，通过触摸屏看到的图象不可避免的与原图象产生了色彩失真，静态的图象感觉还只是色彩的失真，动态的多媒体图象感觉就不是很舒服了，色彩失真度也就是图的大色彩失真度自然是越小越好。平常所说的透明度也只能是图的平均透明度，当然是越高越好。 

反光特性

反光性，主要是指由于镜面反射造成图像重叠身后的光影，如人影、窗户、灯光等。反光是触摸屏带来的负面效果，越小越好，它影响用户的浏览速度，严重时甚至无法辨认图像字符，反光性强的触摸屏使用环境受到限制，现场的灯光布置也被迫需要调整。大多数存在反光问题的触摸屏都提供另外一种经过表面处理的型号：磨砂面触摸屏，也叫防眩型，价格略高一些，防眩型反光性明显下降，适用于采光非常充足的大厅或展览场所，不过，防眩型的透光性和清晰度也随之有较大幅度的下降。清晰度，有些触摸屏加装之后，字迹模糊，图像细节模糊，整个屏幕显得模模糊糊，看不太清楚，这就是清晰度太差。清晰度的问题主要是多层薄膜结构的触摸屏，由于薄膜层之间光反复与反射折射而造成的，此外防眩型触摸屏由于表面磨砂也造成清晰度下降。清晰度不好，眼睛容易疲劳，对眼睛也有伤害，选购触摸屏时要注意判别。

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