Introduction of laser barcode scanners

First, the working principle of the laser barcode scanner:
The hand-held laser scanning gun emits a beam of light through a laser diode, which is irradiated on a rotating prism or a mirror that swings back and forth. The reflected light passes through the reading window and shines on the surface of the barcode. The device is collected and focused by a mirror and converted into an electrical signal by a photoelectric converter, and the signal will be decoded by the scanning period or the decoding software on the terminal.
Second, the classification of laser barcode scanners:
The laser barcode scanner can be divided into two types: handheld and fixed. The connection of the handheld laser barcode scanner is convenient and simple, and the use is flexible; the fixed laser barcode scanner, also known as the laser scanning platform, is suitable for reading the largest and smaller barcodes. Effectively free hands to work.
Third, the advantages and disadvantages of laser barcode scanners:
advantage:
1) Laser barocde scanner can be used for non-contact scanning very well. Usually, laser barcode scanner are the only choice when the reading distance exceeds 30cm

 2) Laser scanning barcodes have a wide range of density and can read irregular barcodes It can be read on the surface or through glass or transparent tape, because it is non-contact reading, so the barcode label will not be damaged;
3) Because of the more advanced reading and decoding system, the first reading recognition success rate is high, the recognition speed is faster than that of a light pen and CCD, and the recognition effect of barcodes with poor printing quality or blurred is good;
4) The bit error rate is extremely low (only about one in three million); the shockproof and anti-drop performance of the laser barcode scanner is good.
Shortcoming:
The price of laser barcode scanners is relatively higher than the common scanner.