Laser Barcode Scanners

When most of us think of barcode scanners, regardless of the actual size or shape of the scanner, that little red laser beam always comes to mind. This little red laser beam is a vital part in the functionality of a barcode scanner.

Similar to pen-type scanners, laser scanners use virtually the same type of technology, but instead of swiping the scanner across a barcode, the scanner is just held in front of the barcode and it automatically registers. This is possible because of a tiny mirror that goes back and forth quickly or a little prism which rotates; both of these styles reflect the laser beam in a fast, forth and back motion, which means that the scanner itself doesn’t has to be moved across the barcode, instead it can stay in place, and the laser reads the barcode by itself.

Laser scanners also utilize a photodiode to measure the light waves that are reflected back into the scanner, and decode the waves into information that we can read. I would venture to say that laser scanners are the single-most common type of scanner out there, mind you that I am talking the technology, and not necessarily the housing, because the laser technology can be used in a variety of of differently shaped scanners.

It is important to note that with laser scanners, certain precautions are to be taken, especially with handheld laser scanners. One should always be careful to avoid shining the laser beam into their eyes. Generally, this isn’t a problem when used by adults in a working environment. But if you are using a laser scanner at home, or around children, it is important to remember that they are not toys.

Laser scanners are very useful in the retail world. It would take so much time and energy if the grocery clerk had to scan each item with a pen-type scanner when you were checking out. Instead, he or she can just swipe the items over the glass covered laser scanner and into your bag.

Special Note: Supermarkets employ a slightly more sophisticated version of the basic laser scanner, but which still uses the same technology. Don’t forget that laser scanners come in handheld models as well, which are useful for bigger, heavier things, like furniture.

Everything you want to know about laser barcode scanner

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