Barcode Scanner

Barcode scanner, also known as bar code scanners, barcode readers , bar code scanner gun. Barcode scannerand barcode readers are one thing, but used it is called different. It is used to read barcode information contained in the reading equipment, optical theory, the contents of the decoded barcode data lines or through wireless transmission means to a computer or other device.
Many types of barcode scanner, in general, divided into laser scanners and CCD scanners：
CCD barcode scanner is the use of optical coupling (CCD) principle of bar code patterns printed on the image, and then decoded。
CCD Barcode Scanner)：
Advantages: no shaft, motor, long life; cheap. Select CCD scanner note that due to the imaging principle is similar to CCD camera, if you want to increase the depth of field, the corresponding lens to increase, so CCD too large, difficult to perform. They should not be close to excellent CCD bar code can be read, and moderate size, ease of operation。
Resolution: If you want to improve the CCD resolution, the need to increase Imaging Department, the unit element of a photosensitive element. Cheap CCD pixel is generally 5 (pixel), literacy EAN, UPC and other commercial codes are adequate for the other code systems literacy will be difficult. Mid-range CCD to 1024pixel as much, some even to 2048pixe1, the narrowest unit can distinguish between elements of the bar code for the 0.1mm。
Laser bar code scanner
Handheld Barcode scanner is through the optical system so that laser diode laser refraction or more issued by the barcode scanner scan lines, the main purpose is to reduce staff input bar code data collection on labor standard bar code。
Commercial enterprises in the choice of barcode scanner, the most important thing is attention to scanning speed and resolution, while the depth of field is not the key factor. Because when the depth increased, the resolution will be greatly reduced. Hand-held barcode scanner outstanding high scan rate should be fixed within the high-resolution depth。