Laser scanner is an optical distance sensor, flexible protection for hazardous areas, through access control, to achieve access to protection. It has single-line scan mode scanning, raster scanning, and scan the whole point of three ways.
Introduction
This is a long-range bar code reading equipment, their superior performance, which is widely used. Single line laser handheld scanner is scanning, the greater depth of field, scanning the first read rate and high precision, scanning equipment, opening width from the width restrictions; horizontal laser scanner for the whole angle scanner, its easy operation, the operator with both hands operation of the items, as long as the bar code symbol for the scanner, regardless of the direction of how, can automatically scan, most supermarkets use this equipment.
Scanning
Scanning laser scanner with single-line scan, raster scan and scan the whole point of three ways. Single line laser handheld scanner is scanning, the greater depth of field, scanning the first read rate and high precision, scanning equipment, opening width from the width restrictions;
Horizontal laser scanner for the whole angle scanner, its easy operation, the operator can operate with both hands on the goods, as long as the bar code symbol for the scanner, regardless of the direction of how, can automatically scan, most supermarkets use this equipment.
Works
When the user touches the power switch or a corresponding device that the scanner is powered, VLD red light laser laser scanner
Beam, the beam expander lens is extended through the beam, hitting the swing of the mirror can be reflected from the surface to form a laser bar code point. When the mirror swings, according to the principle of optical reflection of the laser bar code on the position change, continuous swing mirror, then the bar will see a red laser line, which is due to the phenomenon of persistence of vision. Barcode rough surface, according to the laser points in the bar code on the occurrence of reflection, and empty the reflection intensity is different, diffuse the light hitting the mirror, then reflected by the mirror device to set light by the light gathering device a light, natural light from the filter to filter out stray launched into the photodiode, resulting in optical sensing signal, and then the amplification, shaping decoding, into useful information, transmitted to the host.
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