A semiconductor device that emits coherent light through stimulated emission, used as the light source in barcode scanners.
Commonly used trade names and technical identifiers for Laser Diode.
This component is used in the following industrial products
A sensor that detects and measures particulate matter concentrations in air
An optical device that reads and decodes barcode information for identification and tracking purposes.
A precision optical-electronic component that uses laser technology to perform non-contact scanning and measurement of surfaces or objects.
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Most barcode scanners use laser diodes emitting in the visible red spectrum (630-670 nm) for easy alignment and human visibility, though some models use infrared (780-850 nm) for specific applications.
Laser diodes produce coherent, collimated light with a narrow beam, allowing for longer reading distances and higher precision. LEDs emit incoherent, divergent light, suitable for shorter-range scanners like CCD-based models.
Common failures include gradual output power degradation due to aging, sudden failure from electrostatic discharge (ESD), and thermal damage from overheating, often mitigated with proper drive circuits and cooling.
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