OPTICAL FINGER NAVIGATION MODULE FOR EXTREME TEMPERATURE OPERATION AND METHOD FOR INCREASING LIFE TIME OF OFN MODULE

An optical finger navigation module includes a light source mounted below a window plate formed on a housing of the module, a driver for outputting a current to the light source, an environmental sensor for sensing an environmental condition and providing a signal, and a sensor integrated circuit including a processor coupled with the environmental sensor for reading the signal and generating a compensated current that corresponds to the signal based on a compensation curve tailor-made for the light source and derived from a compensation algorithm using compensation factors. A method for increasing lifetime of the module is also disclosed. 种光学手指导航模块包括：光源，所述光源安装在窗口板下方，所述窗口板形成在所述模块的外壳上；驱动器，所述驱动器用于将电流输出到所述光源；环境传感器，所述环境传感器用于感测环境情况且提供信号；以及传感器集成电路，所述传感器集成电路包括处理器，所述处理器与所述环境传感器联接，用于读取所述信号且基于针对所述光源定制的且使用补偿因数从补偿算法导出的补偿曲线来生成所述信号所对应的补偿电流。还公开了种用于延长该模块的寿命的方法。