Light guide for a display or keyboard

摘要

A light guide for illuminating a display and/or keyboard device is formed from translucent material as a planar element having a peripheral edge. A plurality of arcuately shaped light coupling recesses are formed on one side to transmit light from light sources substantially uniformly into the light guide. A plurality of light reflecting recesses are formed in the peripheral edge to reflect light at the edge back into the light guide in a manner useful for illuminating the keys of the device.