Accessory device for modulating the laser output of a pen-clip actuatable laser pointer

摘要

A laser beam experimentation kit, including an accessory device for modulating the intensity of the visible laser beam produced as output from a laser pointer. The accessory device comprises a printed circuit(PC) board of physically thin construction, which is adapted for slidable insertion between the conductive tip portion and the conductive housing portion of a pen-clip actuatable laser pointer. A pair of conductive pads are formed on the upper and lower surfaces of the PC board. An input signal jack is mounted on PC board for the purpose of receiving a mated plug connector that is connected to a flexible cable carrying an electrical input signal. An electronic circuit and a battery power source are also mounted on the upper surface of the PC board. The function of the electronic circuit is to respond to a predetermined signal characteristic (e.g., the amplitude, frequency or phase) of the input signal supplied to the input signal jack, and to provide a variable load between the pair of conductive pads formed on the PC board. In this way, when the PC board is slidably inserted between the conductive tip portion and the conductive housing portion of the pen-like housing of the laser pointer, the pair of conductive pads on the PC board automatically establish electrical contact therewith without problems of alignment or the like.