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With the improvement of people's consumption level, a variety of convenient devices have emerged, and barcode scanners are a typical example. When we shop in supermarkets, we often see salespersons using Supermarket Desktop Barcode Scanner to scan products. The function of the barcode scanner is to convert the data in the barcode into computer language and perform statistics and payment settlement. Friends who are related to the barcode scanning industry or who have known it know that if you want to classify barcode scanner according to optical types, they can be divided into "laser" and "red light". So what is the difference between these two types of barcode scanners? The following is a brief introduction by the editor of Honor Way electronics.
1. The difference in principle
The working principle of the laser barcode scanner is that a laser light source point is produced by the internal laser device, hits a reflective sheet with a mechanical structure device, and then relies on the vibration of the vibration motor to swing the laser point into a laser line to shine on the barcode, and then pass through. AD is decoded into a digital signal. The red light Embedded QR Code Reader generally uses LED light-emitting diode light source, relying on CCD photosensitive element, and then converted by photoelectric signal.
2. The difference in drop resistance is relatively large
Most laser barcode scanners rely on dispensing glue to fix the mechanical device, so it is often easily damaged when it swings. If the swing piece falls off, we can often see that the light source scanned by some laser scanners after falling becomes a point, resulting in a fairly high rework. The red light Embedded QR Code Reader has no mechanical structure in the middle and has strong stability, so the drop resistance is much stronger than that of the laser scanner. In terms of data ratio, the red light 2D Barcode Reader Module repair rate is much lower than that of the laser scanning module.
3. The difference between the physical principles of light
From the perspective of the physical principle of laser and red light, laser refers to light with strong stimulated radiation energy and good parallelism, which is light of a certain wavelength; and now most of the red light is emitted by LED, which is a light wave visible to the naked eye. Red light is not what we call infrared light. Infrared, as defined by physics, is an electromagnetic wave radiated spontaneously by objects with temperature, which is invisible. From the wavelength and energy of laser and red light, the penetration and anti-interference of red light are worse than that of laser under strong light, and the laser is better than red light under strong light outdoors.
Well, according to the above three points, you can simply understand the difference between laser and red light. If there is anything you don't understand, please feel free to consult us.
