TOUCH SENSOR MODULE WITH TRANSPARENT LENS FOR DISPLAY AND OPTICAL DEVICE CONTAINING THE SAME

摘要

PURPOSE: A touch sensor module for a display including a penetration lens and an optical device including the same are provided to reduce the error of manipulation or input through a touch on the display by emitting light in parallel on a screen. CONSTITUTION: A light divider(220) sends part of a light source to a collimator lens(230) and a part of the light is returned through the collimator lens to a detector. The collimator lens progresses the light emitted from the light divider as parallel light. A prism(240) is located in parallel with the light divider and the collimator lens changes direction of the parallel light at a fixed angle. A slope mirror(250) is formed on an emitted surface of the prism to reflect the parallel light at a fixed angle so that the parallel light is progressed in parallel with a surface of a screen. A protection penetrating lens(310) makes convergent light reflected from the slope mirror into the parallel light.