| 摘要 |
PURPOSE: A lens module of a barcode pen scanner is provided to maximize workability and production through a simplified structure by forming a module body divisionally, and installing a plurality of light emitting elements and a circular stopper double-filter, and to minimize an error by improving accuracy. CONSTITUTION: The module body is formed into an upper and a lower part. The grooves(13,13') are formed on respective screw parts(2,3). A light receiving hole(4) is formed on a center of a PCB(Printed Circuit Board)(8). The light emitting elements(7) are installed to a front surface of the PCB(8). The PCB(8) is connected by inserting a connection terminal(14) into the grooves(13,13'). A lens(9) is installed to a rear part of the light receiving hole(9). The circular stopper double-filter having the light receiving holes(10,10') of the different sizes is installed to the rear part of the lens(9). A photo-sensor(6) having a micro hole(12) at the center is installed to the rear part of the double-filter(11). The front light receiving hole(10) of the double-filter is larger than the rear light receiving holes(10').
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