Bar code scanner (bar code gun) type introduction

1. Classification by way of recognition

Common bar code scanner usually uses the following four technologies: light pen, CCD, laser, image red light.

How the light pen works

The light pen is the most economical and the first handheld barcode scanner. The working principle is to contact the light pen with the barcode. Because the barcode label is a line composed of black and white strips, the barcode can be compiled according to the light reflection principle: the white part of the light is reflected and the black part of the light is absorbed.

Working principle of CCD

CCD bar code scanner is the LED emit light to cover the whole bar code label to analyze the bar code information, and the light pen bar code scanner is different from the scan is the whole bar code.

Its advantages are cheap, easy to use, light weight, scanning distance does not need to contact with the bar code label directly.

Working principle of laser

Laser scanner is a number of scanners in the higher price, because it provides more complete functions and each function index is better, now the use is relatively high.

The laser scanner sends out a beam of light through a laser diode, which is then reflected through a prism and converted into an electrical signal by the scanner, which then compiles the bar code. Laser scanner identification reading ability is high, can read irregular bar code labels or can steal glass and other media to identify the bar code, anti-fall performance is also very good.

Image red light working principle

Image red light bar code scanner its scanner depth of field up to 30cm, scanner speed up to 300 times per second, has a particularly good performance of reading bar codes, decoding ability is very strong, the general bar code scanner can not identify the bar code with image red light scanner can still parse, in addition, the scanner also has a rich bar code data editing function, the price is not expensive, It's a scanner worth choosing.

2. Classification by form and function

Scanning gun, barcode scanning gun, scanning module, scanning platform, two-dimensional code, laser scanning gun, payment box, industrial scanning gun, Bluetooth scanning gun, wireless scanning gun, scanning machine, barcode scanning equipment, scanning head, scanning engine, scanner, scanning module, scanner, scanning module, scanning module, barcode scanning module, barcode scanning, two-dimensional scanning platform, embedded scanning module, industrial scanning Code, bar code scanning module, scanning code box, bar code scanner, scanning code payment module, two-dimensional code scanning module and other different forms, users can choose the corresponding form according to their needs.