Although the laser bar code scanner is relatively expensive in various bar code scanners, it can provide the most comprehensive scanning function indicators, so it is widely used in various industries.
First, the working principle of laser barcode scanner:
The handheld laser scanner emits a beam of light through a laser diode, and illuminates a rotating prism or a mirror that oscillates back and forth. The reflected light passes through the reading window and illuminates the surface of the barcode. The light is reflected by the strip or the air and then returned to the reading. The device is captured, focused by a mirror, and converted into an electrical signal by a photoelectric converter, and the signal is decoded by a scanning period or decoding software on the terminal.
Second, the classification of laser barcode scanner:
The laser scanner can be divided into two types: handheld and fixed. The connection of the handheld laser scanner is simple and flexible, and the fixed laser scanner is also called laser scanning platform. It is suitable for occasions with large reading and small barcode. Free your hands to work.
Third, the advantages and disadvantages of laser barcode scanner:
advantage:
1) The laser scanner is flexible and efficient for non-contact scanning. Generally, the laser scanner is the only choice when the scanning distance exceeds 30cm.
2) The laser scanning barcode has a wide density range and can scan irregular barcode surface or read through glass or transparent adhesive paper, because it is non-contact reading, so it will not damage the barcode label;
3) Because of the advanced scanning and decoding system, the first reading recognition success rate is high, the recognition speed is faster than the light pen and CCD, and the bar code recognition effect with poor printing quality or blur is good;
4) The bit error rate is extremely low (only about one in three million); the laser scanner has good anti-shock and anti-drop performance.
Disadvantages:
Although the price of laser bar code scanner is relatively high, considering the performance, practicability and flexibility, the laser scanner is much more cost-effective than the red scanner.
Laser scanners range in price from a few hundred to more than a thousand depending on the brand. When you buy a scanner, you don't need to pay too much attention to the price. You only need to choose the laser scanner that is most suitable for your price.
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