Why Do Barcode Scanners Use Red light?

Have you ever noticed that barcode scanners mostly use red light? There are smart reasons behind it! In this article, we will explore why red light is the preferred choice for barcode scanners.

Clear Contrast: Red light is excellent at creating a sharp contrast against the black and white lines of a barcode. This contrast makes it easy for the scanner to distinguish between the bars and spaces.

Ink Friendly: The ink used in barcodes is designed to absorb red light effectively. When the scanner beams red light onto the barcode, the dark bars absorb more light than the white spaces, creating a distinct pattern that the scanner can easily understand.

Minimal Interference: Red light faces fewer issues with interference from surrounding light sources, allowing the scanner to work consistently and accurately across different lighting environments.

Eye – Friendly: Red light falls on the safer end of the light spectrum, making it a preferred choice for scanners. It poses minimal risk to the eyes of both operators and customers, contributing to a safer scanning experience.

Imaging Excellence: Some scanners take pictures of barcodes instead of just reading them. Red light proves to be ideal for capturing high-resolution images of barcodes, allowing for precise decoding and more accurate data extraction.

In conclusion, barcode scanners use red light because it is the most visible and efficient colour for scanning barcodes. While other colours have been tried, but still red light remains the top choice, ensuring efficient and reliable scanning experience.

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