Patent ID: 8319753

Claim:
An optical pen, comprising: a housing; a light source module received in the housing and configured for emitting light; an optical lens configured for converging the light emitted from the light source module, the optical lens comprising an optical portion and a supporting portion around the optical portion; a pen tip positioned at an end of the housing and configured for guiding and projecting the light out of the housing; and a shielding member around the optical portion attached to the optical lens and covering the supporting portion, the shielding member being configured for blocking the light passing through the supporting portion from entering into the pen tip; wherein the housing defines a receiving space for receiving the light source module, the optical lens, and the pen tip, the housing further defines a through hole on the end of the housing communicating with the receiving space; and wherein the pen tip comprises a fixing end and a light passing portion integrally connected to the fixing end, the diameter of the light passing portion and the diameter of the through hole are approximately the same, and the diameter of the fixing end is greater than that of the light passing portion, the light passing portion extends through the through hole.