The laser barcode scanner is relatively expensive in a variety of scanners, but they offer the highest range of functional metrics and are widely used in a variety of industries. It is divided into hand-held and fixed type. The hand-held laser gun is convenient and simple to connect, and flexible to use as well. The fixed laser scanner is suitable for occasions with various sizes of bar code, effectively liberating both hands.
The basic working principle of the laser scanner is that the hand-held 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 to illuminate the surface of the barcode. After being reflected by strips or spaces, it returns to the reader, then collected, focused by a mirror, and converted into an electrical signal by a photoelectric converter, at last, the signal is decoded by a decoding software on a scanner or a terminal.
The laser barcode scanner is excellent for non-contact scanning, which is the only choice when reading distances exceeding 30cm. Laser barcode scanner also has a wide range of densities and can read irregular barcode surfaces or through glass or transparent adhesive paper without damaging the barcode label because it is non-contact reading. Due to the advanced reading and decoding system, the first reading recognition success rate is high, and the recognition speed is faster than the light pen and CCD. The laser barcode scanner can effectively recognize through poor-quality printing or fuzzy bar code with an extremely low (only about one-millionth) bit error rate. What’s more, the laser reader has good anti-shock and anti-drop performance, for example, SymbolLS4000 series scanner can stand 1.5m concrete floor drop test.
The only drawback of the laser barcode scanner is that it is relatively expensive, but it is not much different from the CCD reader if it is calculated from the sum of the purchase cost and the usage fee.
Image red barcode reader is a bar code reader that can replace laser guns. It has a depth of field of 30cm and a scanning speed of up to 300 times per second for excellent reading performance. The unique image design makes it extremely powerful to decode, the bar code that the usual scanner can’t read. Through the intelligent interface, you can convert the keyboard, RS232 serial port, USB and other interfaces by simply replacing the cable. At the same time, you can directly connect it to the laptop. For special devices such as hand-held computers, some models can be powered directly by the built-in battery, which solves the problem of insufficient power supply capability of the hand-held computer. It can also be set up and upgraded via software. Its rich data editing capabilities allow the image red scanner to work well with the user’s existing software. Image red light scanner’s excellent performance combined with its easy price will definitely be your best choice if you are looking for a high-quality laser barcode scanner. For more information, you can go to Google it and there is a saying that goes, shop around so you can get the best deal.