科学家发明隐形眼镜可查看邮件短信息(图)

　　Emails and text messages could be read on contact lenses linked to the internet, scientists believe.

　　Researchers constructed a computerised contact lens and demonstrated its safety by testing it on live eyes, and there were no signs of adverse side effects.

　　At the moment, the contact lens device contains only a single pixel, but the researchers see this as a "proof-of-concept" for producing lenses with multiple pixels which, in their hundreds, could be used to display short emails and text messages right before your eyes.

　　The researchers said the device could overlay computer-generated visual information on to the real world and be of use in gaming devices and navigation systems.

　　It could also be linked to the user's body to provide up-to-date information on glucose or lactate levels, which could prove medically important.

　　The contact lens created by researchers at the University of Washington and Aalto University, Finland, consists of an antenna to harvest power sent out by an external source, as well as an integrated circuit to store this energy and transfer it to a transparent sapphire chip containing a single blue LED.

　　One major problem the researchers had to overcome was the fact that the human eye, with its minimum focal distance of several centimetres, cannot resolve objects on a contact lens. Any information projected on to the lens would probably appear blurry.

　　To combat this, the researchers incorporated a set of Fresnel lenses into the device; these are much thinner and flatter than conventional bulky lenses, and were used to focus the projected image on to the retina.

　　据英国《每日电讯报》11月22日报道，科学家们相信，人们可以通过连接到因特网的隐形眼镜来读取邮件和短信。

　　研究人员制造了一种计算机化的隐形眼镜，并宣称已经通过肉眼使用的安全测试，没有产生不良副作用的迹象。

　　目前，这种隐形眼镜只是单像素的，但是研究人员将其看作是一种“概念的证明”，证明能够生产出多像素的镜头，拥有数以百计的像素，可以就在你的眼前显示简短的邮件和短消息。

　　研究人员说，这种设备可以将电脑生成的视觉信息覆盖于真实世界的景观之上，能够用于游戏设备和导航系统。

　　它还能与使用者的身体连接，随时提供有关葡萄糖和乳酸水平的最新信息，这也证明在医学上很重要。

　　这种隐形眼镜是由来自华盛顿大学和芬兰阿尔托大学的研究人员共同创造的，其组成部分包括一根用来接收外界信息来源发出的能量的天线，以及一个集成电路，这一电路会把接收到的能量储存起来，并将其转移到一个透明的包含单个蓝色二极管的宝石蓝芯片上。

　　研究人员必须解决的一个重要的问题是，人眼的最小焦距是几厘米，无法分辨出隐形眼镜上显示的物体。有可能出现在镜片上的所有信息都会看起来很模糊。

　　为了解决这一问题，研究人员采用了一系列菲涅尔透镜，这些透镜比传统的比较大的镜片薄得多也平滑得多，可以用来聚焦投影在视网膜上的图像。